CN1959817B

CN1959817B - Recording method and recording apparatus

Info

Publication number: CN1959817B
Application number: CN2006101504839A
Authority: CN
Inventors: 丸山纯孝; 安东秀夫; 渡部一雄; 柏原裕; 小川昭人
Original assignee: Toshiba Corp
Current assignee: Toshiba Samsung Storage Technology Korea Corp
Priority date: 2005-11-02
Filing date: 2006-11-02
Publication date: 2010-06-16
Anticipated expiration: 2026-11-02
Also published as: CN1959817A; JP2007128594A

Abstract

An information recording method which records information on an information storage medium in which layer 0 and layer 1 are sequentially arranged as recording layers from a read surface, a system lead-in area, a data lead-in area, a data area, and a middle area are sequentially arranged from an inner circumference of the layer 0, and a system lead-out area, a data lead-out area, a data area, and a middle area are sequentially arranged from an inner circumference of the layer 1, and a guard track zone is arranged on a side of the data area in the data lead-out area, and a reference code zone, an R physical format information zone, a recording position management zone, and a drive test zone are arranged in the data lead-in area of the layer 0 corresponding to the guard track zone, the method characterized by comprising padding (S28) of the guard track zone of the data lead-out area is performed after padding (S22) of the drive test zone of data lead-in area and recording (S24, S26) of the recording position management zone, the reference code zone of the data lead-in area, and the R physical format information zone of the data lead-in area.

Description

Recording method and recording unit

Technical field

The present invention relates to for example information storage medium, recording method and the recording unit of CD-R.

Background technology

In recent years, digital versatile disc (DVD) has been used as the actual use of huge capacity compact discs.As recordable DVD, standardization recordable DVD-R, rewritable DVD-RW and DVD-RAM.In case information is recorded on the recordable disc DVD-R, then can not the regenerative recording district.Traditional recordable DVD-R comprises power calibration area (PCA), recordng management area (RMA) and wherein begins to carry out the data recorded area (DA) of physical record processing (for example referring to Japanese Patent Application Publication 2002-245625 (the 0041st to 0052 section, Fig. 1)) from inner circumferential side.

And data recorded area DA comprises: Lead-In Area, wherein write down when reproducing record data from the data field recording parameters information that will be read out etc.; Record data have wherein been write down in the data field; And leading-out zone, wherein write down when the reproduction of the record data that write down in this data field finishes the ending message that will be read out etc.This Lead-In Area is a district that had wherein write down recording parameters information etc. to data before being recorded in the data field.This leading-out zone is a district that had wherein write down ending message before the record of finishing the record data on the whole DVD.The capacity in each district is predetermined and constant.

When recorded information on this kind DVD (beginning executive logging), at first in the PCA district, carry out test record from the inner circumferential side of data field.In test record, owing to the characteristic of same type of disc along with the manufacturer changes, and, cause the change of best titime waveform owing to reasons such as environment for use temperature, laser operation environment.The parameter (intensity, pulsewidth etc.) of the wave recording that uses when therefore, the result by this test record is adjusted at and is recorded in information on the CD.

Subsequently, management information and user data are recorded in respectively in RMA district and the data field.Management information comprises the information in the physical record district (record-end position) that is illustrated in this data field etc.According to the progress of the record of user data, management information is updated to up-to-date management information.In case owing to write down information then can not on this recordable DVD, rewrite this part, so upgrade the residual capacity in this RMA district that this management information all reduces at every turn.According to a kind of method of new administration information more, before the record in the whole district of data field was done, this RMA district may no longer include not recording areas.When this RMA district not during recording areas, this management information can't be updated.Therefore, must stop recording operation at this data field.

On the other hand, in above-mentioned DVD device, wave recording changes.According to the record position on the dish, cause the change of best titime waveform owing to temperature or new and old change.To adjust wave recording in order changing, in the DVD device, in the PCA district, to carry out test record, so that adjust the parameter of wave recording according to these.The renewal of image tube reason information is such, carries out test record at every turn, all reduces the residual capacity in this PCA district.According to the mode of carrying out test record, before the record that carries out in the whole district of this data field was done, this PCA district may no longer include not recording areas.When not having not recording areas in this PCA zone, must stop recording operation, or must under the condition of uncomfortable complete record waveform, write down this user data and management information.Can not be have from it write down in the part of information and reproduced information fully reliably with unadjusted wave recording.

For the shortage that prevents the RMA district or the shortage in PCA district, can keep jumbo RMA district or PCA district in advance.But will reduce in this case, the capacity of data field.The result is, even the not recording areas in this RMA district and the PCA district has sufficient residue, but the capacity of this data field might be big inadequately.

On the other hand,, proposed dvd standard of future generation, wherein come the diameter of constriction beam spot, so that increase recording capacity by wavelength or the increase numerical aperture NA that shortens laser beam in order to increase recording capacity.Method as increasing recording capacity has also proposed single face multilayer storage medium.Promptly, except the constriction beam spot, also on the one side of dish, form a plurality of recording layers, mobile object lens focus the beam on each recording layer in optical axis direction, so that can be on each recording layer executive logging and reproduction (for example referring to Japanese Patent Application Publication 2004-206849 (the 0036th to 0041 section, Fig. 1)).

This single face multilayer storage medium has the absent variable problem that is called layer-to-layer signal transfer in the single-surface single-layer storage medium.For the simplification of describing, with two-layered medium of example.On the single-surface double-layer storage medium, laser beam focuses on each layer from the single surface of reading.Be referred to as layer 0 near the layer of reading the surface, and be referred to as layer 1 away from the layer of reading the surface.When focusing the beam at each layer and go up, some laser beam is irradiated onto on the layer except that destination layer.Therefore, mixed by the reproducing signal in reproducing, layer-to-layer signal transfer takes place from the folded light beam of the layer except that this destination layer.This layer-to-layer signal transfer not only causes problem in reproducing, and causes problem in record.

Summary of the invention

An object of the present invention is to provide a kind of information storage medium, this information storage medium prevents by the generation from the layer-to-layer signal transfer layer that causes of folded light beam of the layer except that destination layer.

An object of the present invention is to provide a kind of information recording method, this information recording method prevents by the generation from the layer-to-layer signal transfer layer that causes of folded light beam of the layer except that destination layer.

An object of the present invention is to provide a kind of information-recording apparatus, this information-recording apparatus prevents by the generation from the layer-to-layer signal transfer layer that causes of folded light beam of the layer except that destination layer.

According to one embodiment of the invention, a kind of on information storage medium the information recording method of recorded information, in this information storage medium, sequentially arrange layer 0 and layer 1 as recording layer from reading the surface beginning; Begin sequentially arranging system Lead-In Area, data importing district, data field and mesozone from this floor 0 inner periphery; Begin sequentially arranging system leading-out zone, data leading-out zone, data field and mesozone from this layer 1 inner periphery; Arrange the protection track ribbon in the data leading-out zone, this protection track ribbon is positioned at data field one side; And with the data importing district of this protection track ribbon corresponding this floor 0 in arrange reference number band, R physical format information band, the record position management is with and the driving calibration tape; the method comprising the steps of: after the R physical format information in the reference number band of the driving calibration tape of data Lead-In Area being filled and this record position is managed band, this data importing district and this data importing district is brought line item into, carry out the filling of the protection track ribbon of this data leading-out zone.

According to another embodiment of the present invention, a kind of on information storage medium the information recording method of recorded information, in this information storage medium, sequentially arrange layer 0 and layer 1 as record from reading the surface beginning; Begin sequentially arranging system Lead-In Area, data importing district, data field and mesozone from this floor 0 inner periphery; Begin sequentially arranging system leading-out zone, data leading-out zone, data field and mesozone from this layer 1 inner periphery; Arrange the protection track ribbon in the mesozone of layer 0, this protection track ribbon is positioned at data field one side; And comprise the protection track ribbon with the mesozone of corresponding this layer 1 of this protection track ribbon, the method comprising the steps of: after the protection track ribbon of the mesozone of this layer 0 is filled, carry out the filling of protection track ribbon of the mesozone of this layer 1.

According to another embodiment of the present invention, a kind of on information storage medium the information recording method of recorded information, in this information storage medium, sequentially arrange layer 0 and layer 1 as recording layer from reading the surface beginning; Begin sequentially arranging system Lead-In Area, data importing district, data field and mesozone from this floor 0 inner periphery; Begin sequentially arranging system leading-out zone, data leading-out zone, data field and mesozone from this layer 1 inner periphery; And in the mesozone of this layer 0, arrange and protect track ribbon; this protection track ribbon is positioned at data field one side; the method comprising the steps of: after the filling of the protection track ribbon of the mesozone of the data recording in the data field of this layer 0 and this layer 0, carry out the data recording in the data field of this layer 1.

According to another embodiment of the present invention, a kind of information-recording apparatus that records the information on the information storage medium is in this information storage medium, from reading surperficial layer 0 and the layer 1 that begins sequentially to arrange as recording layer; Begin sequentially arranging system Lead-In Area, data importing district, data field and mesozone from this floor 0 inner periphery; Begin sequentially arranging system leading-out zone, data leading-out zone, data field and mesozone from this layer 1 inner periphery; Arrange the protection track ribbon in the data leading-out zone, this protection track ribbon is positioned at data field one side; And with the data importing district of this protection track ribbon corresponding this floor 0 in arrange reference number band, R physical format information band, the record position management is with and the driving calibration tape, this equipment comprises: first filler cells, and it carries out the filling of the driving calibration tape in this data importing district; Record cell, it writes down the record position management band in this data importing district and the reference number band and the R physical format information band in this data importing district; With second filler cells, it carries out the filling of the protection track ribbon of this data leading-out zone after filling of being undertaken by this first filler cells and the record that undertaken by this record cell.

According to another embodiment of the present invention, a kind of information-recording apparatus that records the information on the information storage medium is sequentially arranged layer 0 and layer 1 as recording layer from reading surface beginning in this information storage medium; Begin sequentially arranging system Lead-In Area, data importing district, data field and mesozone from this floor 0 inner periphery; Begin sequentially arranging system leading-out zone, data leading-out zone, data field and mesozone from this layer 1 inner periphery; Arrange the protection track ribbon in the mesozone of layer 0, this protection track ribbon is positioned at data field one side; And comprise the protection track ribbon with the mesozone of corresponding this layer 1 of this protection track ribbon, and this equipment comprises: first filler cells, and it carries out the filling of protection track ribbon of the mesozone of this layer 0; And second filler cells, it carries out the filling of protection track ribbon of the mesozone of this layer 1 after the filling by this first filler cells.

According to another embodiment of the present invention, a kind of information-recording apparatus that records the information on the information storage medium is in this information storage medium, from reading surperficial layer 0 and the layer 1 that begins sequentially to arrange as recording layer; Begin sequentially arranging system Lead-In Area, data importing district, data field and mesozone from this floor 0 inner periphery; Begin sequentially arranging system leading-out zone, data leading-out zone, data field and mesozone from this layer 1 inner periphery; And in the mesozone of layer 0, arrange the protection track ribbon, and this protection track ribbon is positioned at data field one side, and this equipment comprises: first record cell, it is recorded in data in the data field of this layer 0; Filler cells, it carries out the filling of protection track ribbon of the mesozone of this layer 0; And second record cell, it is recorded in data in the data field of this layer 1 after record that is undertaken by this first record cell and the filling undertaken by this filler cells.

According to another embodiment of the present invention, a kind of information recording method comprises step: information is recorded in the Lead-In Area of record management data dubs in data importing district; And the record position management record data in record position management band in this data importing district.

According to another embodiment of the present invention, a kind of information storage medium wherein is recorded in information in the Lead-In Area of record management data dubs in data importing district; And the record position management record data in record position management band in this data importing district.

Description of drawings

Figure 1A and 1B are the exemplary plot that standard phase shift recording sheet structure and organic dyestuff recording sheet structure are shown;

Fig. 2 is an exemplary plot, and the concrete structure formula of the particular content " (A3) azo group-metal complex+Cu " of information storage medium constituent is shown;

Fig. 3 is an exemplary plot, and the example of the light absorption spectral characteristic of the organic dyestuff recording materials that are used for current DVD-R dish is shown;

Fig. 4 A and Fig. 4 B are exemplary plot, and each all shows the comparison of the shape of the recording sheet that forms in pre-pit district in phase shift recording sheet and organic dyestuff recording sheet or the pre-groove district 10;

Fig. 5 A and 5B are exemplary plot, and each all is illustrated in the write-once type information storage medium that uses traditional organic dye material the concrete state of plastic deformation at the printing opacity substrate 2-2 of the position of record mark 9;

Fig. 6 A, 6B and 6C are exemplary plot, have related to shape or the size of wherein easily having set up the recording sheet of recording principle;

Fig. 7 A, 7B and 7C are exemplary plot, and each all illustrates the shape and size of recording sheet;

Fig. 8 is the exemplary plot that illustrates according to an embodiment of information recording/reproduction device of the present invention;

Fig. 9 is the exemplary plot that the periphery detailed structure that comprises synchronous code position sampling shown in Figure 8 unit 145 is shown;

Figure 10 is the exemplary plot that illustrates from the detection signal polarity of " H-L " recording sheet and the detection of " L-H " recording sheet;

Figure 11 is the exemplary plot that is illustrated in the light absorption spectral characteristic under the not recording status of " L-H " recording sheet;

Figure 12 is illustrated in the recording status of " L-H " recording sheet and the exemplary plot of the change of the light absorption spectral characteristic under the recording status not;

Figure 13 is the exemplary universal structural formula of the blue dyestuff of cyanines that is used for the cationic moiety of " L-H " recording sheet;

Figure 14 is the exemplary plot that is illustrated in the example of the inner structure of information storage medium and size;

Figure 15 A, 15B, 15C and 15D are exemplary plot, and every width of cloth figure all illustrates the RMD dubs RDZ and the record position that are arranged in the write-once type information storage medium and manages the internal data structure of being with RMZ;

Figure 16 A, 16B, 16C and 16D are exemplary plot, and every width of cloth figure all illustrates another different embodiment;

Figure 17 A, 17B, 17C and 17D are exemplary plot, and every width of cloth figure all is illustrated in the frontier district structure in the write-once type information storage medium;

Figure 18 A, 18B, 18C and 18D are exemplary plot, and every width of cloth figure all illustrates the internal data structure of control data band CDZ and R physical message band RIZ;

Figure 19 is an exemplary plot, and the comparison of the content of the details in the distribution locations information that is recorded on the DTA of data field is shown;

Figure 20 is an exemplary plot, and the update condition of record position management data RMD is shown;

Figure 21 illustrates the exemplary plot of degree phase modulation of 180 in the wobble modulation and NRZ technology;

Figure 22 illustrates the exemplary plot that concerns between wobble shape in the address bit district and the address bit;

Figure 23 A, 23B, 23C and 23D are exemplary plot, and the comparison of the position relation of the inside of swinging synchronous mode and wobble data unit is shown;

Figure 24 A, 24B, 24C and 24D are exemplary plot, about the internal data structure of the swinging address information in the write-once type information storage medium;

Figure 25 is the exemplary plot that the position is set of the modulator zone on the write-once type information storage medium;

Figure 26 A, 26B, 26C and 26D are exemplary plot, and every width of cloth figure all is illustrated in the position that is provided with of modulator zone in the physical segment on the write-once type information storage medium;

Figure 27 A and 27B are exemplary plot, and every width of cloth figure all illustrates another embodiment of the detection signal level that meets the H form in " L-H " recording sheet;

Figure 28 is an exemplary plot, and the BCA data structure is shown;

Figure 29 A, 29B, 29C, 29D, 29E, 29F and 29G are exemplary plot, and every width of cloth figure all illustrates the example of the content of the BCA information that is recorded in the BCA data field;

Figure 30 A, 30B, 30C, 30D and 30E are exemplary plot, and every width of cloth figure all illustrates the swinging address form of write-once type information storage medium;

Figure 31 illustrates the illustrated section figure according to the dual-layer recordable dish of second embodiment of the invention;

Figure 32 is an exemplary plot, the light beam when being illustrated in the reading and write of one deck of dish on another layer;

Figure 33 shows exemplary plot, is illustrated in the clearance (clearance) of the influence that prevents another layer under the worst case;

Figure 34 shows exemplary plot, illustrate layer on 0 physical sector number and layer 1 on can write down physical sector accordingly;

Figure 35 shows exemplary plot, is illustrated in the clearance in the physical sector number;

Figure 36 shows exemplary plot, and the general parameter of Write-once-type recording medium is shown;

Figure 37 shows exemplary plot, and the simplified schematic illustration of Lead-In Area and leading-out zone is shown;

Figure 38 shows exemplary plot, and the simplified schematic illustration of original mesozone is shown;

Figure 39 shows the exemplary plot that orbital path is shown;

Figure 40 shows exemplary plot, and physical sector layout and numbering are shown; Figure 41 shows exemplary plot, is illustrated in the layout of the address field among the WAP (swinging address in period position);

Figure 42 shows exemplary plot, and the main WDU (wobble data unit) in the synchronization field is shown;

Figure 43 shows exemplary plot, and the main WDU in the address field is shown;

Figure 44 shows exemplary plot, and the less important WDU in the synchronization field is shown;

Figure 45 shows exemplary plot, and the less important WDU in the address field is shown;

Figure 46 shows exemplary plot, and the WDU in the unified field is shown;

Figure 47 shows exemplary plot, and the Lead-In Area structure is shown;

Figure 48 shows exemplary plot, and the structure of control data band is shown;

Figure 49 shows exemplary plot, and the structure of the data segment in the control data part is shown;

Figure 50 shows the exemplary plot that physical format information is shown;

Figure 51 illustrates the exemplary plot that the data field is distributed;

Figure 52 shows exemplary plot, and the layout of RMD (record management data) dubs is shown;

Figure 53 shows exemplary plot, and the data structure of record management data is shown;

Figure 54 shows the exemplary plot that RMD field 0 is shown;

Figure 55 shows the exemplary plot that the data field is distributed is shown;

Figure 56 shows the exemplary plot that the data updated district distributes is shown;

Figure 57 shows the exemplary plot that drives calibration tape is shown;

Figure 58 shows the exemplary plot that RMD field 1 (part 1) is shown;

Figure 59 shows the exemplary plot that RMD field 1 (part 2) is shown;

Figure 60 shows the exemplary plot that RMD field 4 is shown;

Figure 61 shows the exemplary plot of RMD field 5 to RMD field 21 is shown;

Figure 62 shows exemplary plot, is illustrated in the structure of the physical sector piece in the R-physical format information band;

Figure 63 shows the exemplary plot that physical format information is shown;

Figure 64 shows the exemplary plot that the data field is distributed is shown;

Figure 65 A, 65B and 65C are exemplary plot, illustrate before the expansion/structure of afterwards mesozone;

Figure 66 shows exemplary plot, and the structure of expansion mesozone before is shown;

Figure 67 shows exemplary plot, is illustrated in the structure of small size expansion mesozone afterwards;

Figure 68 shows exemplary plot, is illustrated in the structure of large scale expansion mesozone afterwards;

Figure 69 shows exemplary plot, and the physical sector number in the protection track ribbon is shown;

Figure 70 shows exemplary plot, and the structure of leading-out zone is shown;

Figure 71 A and 71B show the exemplary plot of the summary signal that two adjacent orbits are shown;

Figure 72 shows the beginning PSN of end mark and finishes the exemplary plot of PSN;

Figure 73 A and 73B show the exemplary plot of the type selecting of track #i+1;

Figure 74 shows exemplary plot, and the example of the situation of having selected type 3 physical segments is shown;

Figure 75 shows exemplary plot, and the example of the process of selecting this physical segment is shown;

Figure 76 shows exemplary plot, and the example of the recording process of blank disc is shown;

Figure 77 shows exemplary plot, is illustrated in the example that is used for the final plot structure of user data on the layer 1;

Figure 78 A and 78B show exemplary plot, are illustrated on the layer 1 to be used for the not example of the final plot structure of user data;

Figure 79 illustrates the exemplary plot of another recording process of blank disc;

Figure 80 illustrates the exemplary plot of the another recording process of blank disc;

Figure 81 illustrates the exemplary plot of the recording process of end mark;

Figure 82 illustrates the exemplary plot of another recording process of end mark.

Embodiment

Describe with reference to the accompanying drawings subsequently according to each embodiment of the present invention.Usually, according to one embodiment of present invention, a kind of on information storage medium the information recording method of recorded information, in this information storage medium, sequentially arrange layer 0 and layer 1 as recording layer from reading the surface beginning; Begin sequentially arranging system Lead-In Area, data importing district, data field and mesozone from this floor 0 inner periphery; Begin sequentially arranging system leading-out zone, data leading-out zone, data field and mesozone from this layer 1 inner periphery; Arrange the protection track ribbon in the data leading-out zone, this protection track ribbon is positioned at data field one side; And with the data importing district of this protection track ribbon corresponding this floor 0 in arrange reference number band, R physical format information band, the record position management is with and the driving calibration tape; the method comprising the steps of: after the R physical format information in the reference number band of the driving calibration tape of data Lead-In Area being filled and this record position is managed band, this data importing district and this data importing district is brought line item into, carry out the filling of the protection track ribbon of this data leading-out zone.To describe with reference to the accompanying drawings subsequently according to recording medium of the present invention and method that recording medium according to the present invention is write down and reproduces.

The summary of characteristic of the present invention and beneficial effect

1) relation between track space/column pitch and the optimal recording power:

General situation is, under the situation of the recording principle that utilizes the substrate distortion, if " intersection write " or " cross erasing then will appear in the constriction track space ", and if the constriction column pitch, then intersymbol interference will appear.As in the present embodiment, owing to be the design of making of the recording principle that is out of shape with no substrate, so the result might realize high density by constriction track space/column pitch.In addition, improved the sensitivity of writing down simultaneously, optimal recording power has been set, thereby realized high-speed record and recording sheet is divided into multilayer owing to can force down with above-mentioned recording principle.

2) in the optical recording that carries out with 620nm or littler wavelength, form an ECC piece, and each of the data ID information in two sectors is placed in the little ECC piece different with another ECC piece by the combination of a plurality of little ECC pieces:

According to present embodiment, shown in Figure 1B, the principle that writes down is the change of the local light feature in recording layer 3-2, therefore and in writing down, the temperature that reaches among this recording layer 3-2 will be lower than by the plastic yield of printing opacity substrate 2-2 or the temperature that reached by the traditional record principle that the thermal decomposition or the gasification (evaporation) of organic dyestuff recording materials acts on.Therefore, the difference that reaches between temperature and the record temperature in playback time recording layer 3-2 is a little value.In the present embodiment, in the ECC piece, design the interleaving treatment between little ECC piece and the distribution of data ID position, thereby improved the reproduction reliability under the bad change situation of recording sheet in resetting repeatedly.

3) with the light executive logging with wavelength shorter than 620nm, and a recording section has the reflection coefficient higher than non-recording section:

Under the influence of the absorption spectrum feature of common organic dye material, under the control of the light of the wavelength shorter, reduced absorptivity significantly, and reduced recording density than 620nm.Therefore, the substrate that needs very big exposure to produce as the recording principle among traditional DVD-R is out of shape.By adopting " low " to high (hereinafter being abbreviated as L-H) organic dyestuff recording materials, its reflectance ratio significantly improves at the reflection coefficient as the non-recorded part in the part (record mark) that writes down in the present embodiment, eliminate a substrate distortion by using " color fading reaction that causes by dissociating of electronics bonding " to form record mark, and the raising recording sensitivity.

4) " L-H " organic dyestuff recording sheet and PSK/FSK modulated wobbles groove:

Can easily obtain synchronously, and improve the reproduction reliability of swinging address in the swing of playback time.

5) " L-H " organic dyestuff recording sheet and reproducing signal degree of modulation rule:

Can guarantee with from the relevant high C/N ratio of the reproducing signal of record mark, and improve reproduction reliability from record mark.

6) the luminous reflectivity scope in " L-H " organic dyestuff recording sheet and mirror portion:

Can guarantee about high C/N ratio, and can guarantee the high reliability of reproducing from the reproducing signal of the Lead-In Area SYLDI of system.

7) when tracking from not " L-H " the organic dyestuff recording sheet and the luminous reflectivity scope of recording areas:

Can guarantee about at the high C/N ratio of the swing detection signal in the recording areas not, and can guarantee to reproduce reliability about the height of swinging address information.

8) " L-H " organic dyestuff recording sheet and swing detection signal amplitude scope:

Can guarantee high C/N ratio, and can guarantee to reproduce reliability about the height of swinging address information about the swing detection signal.

" table of content "

The 0th chapter: the relationship description between wavelength and the present embodiment

With wavelength in the present embodiment

The 1st chapter: the combination explanation of the constituent of information storage medium in the present embodiment:

The 2nd chapter: the Discrepancy Description in the reproducing signal between phase-change recording film and organic dyestuff recording sheet

2-1) the difference on the principle of record/recording sheet and ... λ about the difference in the key concept of the generation of reproducing signal _{Max write}Definition

2-2) the difference of the reflection layer shape in pre-pit/pre-groove district

Reflection layer shape (difference in spin coating and sputter vaporization precipitation) and for the influence of reproducing signal.

The 3rd chapter: organic dyestuff recording sheet behavioral illustrations in the present embodiment

3-1) realize relevant some problems with high density in using the write-once type recording sheet (DVD-R) of traditional organic dye material

3-2) to the explanation of the total essential characteristic of in the present embodiment organic dyestuff recording sheet:

The lower limit of recording layer thickness, realize the lower limit of the channel bit length/track space of beneficial effect of the present invention, playback allows the lower limit of counting, the lower limit of optimum reproduction power repeatedly,

Ratio between groove width and the groove bank width ... with the relation of swinging address form

Relation in the recording layer thickness between trench portions and the groove bank part

The technology that improves the recorded information error correcting capability and make up with PRML

3-3) for the total recording characteristic of in the present embodiment organic dyestuff recording sheet

The higher limit of optimal recording power

3-4) with present embodiment in the relevant explanation of recording sheet characteristic of " high to low (hereinafter being abbreviated as H-L) ":

The higher limit of the reflection coefficient in the recording layer not

λ _{Max write}Value and λ l _MaxBetween relation (at the absorptivity maximum wavelength of record/record position not)

At the correlation of the reflection coefficient of record/record position not and degree of modulation and to the absorbance value of playback wavelength ... the nk scope

Relation in the higher limit between resolution characteristics that requires and recording layer thickness

The 4th chapter: the explanation of reproducer or recording/reproducing apparatus and record condition/reproducing circuit

4-1) the explanation of the structure of reproducer in the present embodiment or recording/reproducing apparatus and feature: use wavelength coverage, NA value and RIM intensity

4-2) the explanation of reproducing circuit in the present embodiment

4-3) the explanation of record condition in the present embodiment

The 5th chapter: the example explanation that organic dyestuff recording sheet in the present embodiment is concrete

5-1) with present embodiment in the relevant behavioral illustrations of " L-H " recording sheet

Recording principle and in the not reflection coefficient and the degree of modulation of record/record position

5-2) the characteristic of the light absorption frequency spectrum relevant with in the present embodiment " L-H " recording sheet:

Be used to be provided with maximum absorption wavelength λ _{Max write}, Al ₄₀₅Value and Ah ₄₀₅The condition of value

5-3) anionicsite: azo-group metal complex compound+cationic moiety: dyestuff

5-4) " copper " is as the use of azo-group metal complex compound+main metal:

Light absorption frequency spectrum after being recorded broadens in " H-L " recording sheet, and narrows down in " L-H " recording sheet.

Before record with record after the higher limit of maximum absorption wavelength change amount:

Before record with record after maximum absorption wavelength change amount be little value, and in the change of the absorptivity of maximum absorption wavelength.

The 6th chapter: with the explanation that the pre-groove shape/the pre-pit shape is relevant in coating type organic dyestuff recording sheet and on the reflection layer interface

6-1) reflection layer (material and thickness):

Thickness range and passivating structure ... the principle of record and the countermeasure (signal is easier by bad no-load voltage ratio substrate distortion or cavity) of resisting bad change

6-2) with the relevant explanation of pre-pit shape in coating type organic dyestuff recording sheet and on the reflection layer interface:

By widening the beneficial effect of the track space/raceway groove column pitch realization in system's Lead-In Area:

Reproducing signal amplitude and resolution in system's Lead-In Area:

Rule about part of the groove bank in reflection layer 4-2 and pre-pit step (step) amount partly:

6-3) with the relevant explanation of pre-groove shape in coating type organic dyestuff recording sheet and on the reflection layer interface:

Rule about part of the groove bank in reflection layer 4-2 and pre-groove step amount partly:

The push-pull signal amplitude range:

Wobble signal amplitude scope (with the wobble modulation system in combination)

The 7th chapter: first in following generation CD: the explanation of HD dvd system (hereinafter being called the H form):

The countermeasure of the principle of record and the bad change of opposing reproducing signal (bad no-load voltage ratio substrate distortion of signal or cavity are easier):

Error correcting code (ECC) structure, PRML (PRML) system:

Wide flat region in groove and the relation between the swinging address form.

In write once recording, in the VFO district that is non-data field, carry out rewriteeing.

The influence that direct current composition in overwrite area changes is lowered.Especially, remarkable for the beneficial effect of " L-H " recording sheet.

Now provide the description of present embodiment.

The 0th chapter: use the explanation that concerns between wavelength and the present embodiment

As the Write-once optical disc that the organic dye material that is used for recording medium by use obtains, CD-R dish that uses 780nm recoding/reproduction lasing light emitter wavelength and the DVD-R dish that uses 650nm recording or reproducing laser beam wavelength can commercial be provided.And, in realizing highdensity write-once type information storage medium of future generation, advised using in any lasing light emitter wavelength near 405nm (promptly at 355nm in the scope of 455nm) to write down or reproducing at H form (D1) and B form (D2).In the write-once type information storage medium that uses organic dye material, because the slight change of optical source wavelength will cause that recording changes sensitively.On principle, say, the increase of density be inversely proportional to the lasing light emitter wavelength that is used for recoding/reproduction square, thereby wish shorter lasing light emitter wavelength is used for recoding/reproduction.Because above-mentioned, the organic dye material that is used for CD-R dish or DVD-R dish can not be used as the write-once type information storage medium of 405nm.And, because 405nm is near ultraviolet wavelength, so a kind of recording materials that occur " can by easily with the light beam record of 405nm " easily because ultraviolet irradiation causes the shortcoming of change easily of characteristic, thereby lack long-term stability.Make characteristic significantly different each other along with the difference that will use organic dye material, and therefore be difficult to determine generally the characteristic of these dye materials.

As an example, will above-mentioned characteristic be described by concrete wavelength.With regard to regard to the organic dyestuff recording materials of the light beam optimization of wavelength 650nm, the light that is used is become shorter than 620nm, recording changes significantly.Therefore, in the situation of operating, need develop a kind of organic dye material that for the optical source wavelength of recording light or playback light, belongs to the best again with the light beam executive logging/reproduction that is shorter than the 620nm wavelength.The light beam that can be shorter than 530nm with wavelength easily a kind of organic dye material of executive logging will thereby cause the bad change of feature easily owing to the former of ultraviolet ray irradiation, so lack long-term stability.In the present embodiment, will provide description for an embodiment relevant with a kind of organic recording materials that are adapted at using near 405nm.Promptly consider the fluctuation of the manufacturer's of depending on the semiconductor laser light source emission wavelength, provide description with being stabilized for an embodiment relevant with using organic recording materials in 355nm to 455nm scope.In other words, the scope of present embodiment is corresponding to being suitable for the light beam that wavelength is the light source of 620nm, and expects that this light beam wavelength is than 530nm shorter (scope from 355nm to 455nm in the definition in close limit).

In addition, because the optical recording susceptibility that the light absorption frequency spectrum of organic dye material causes also is subjected to the influence of recording wavelength.The organic dye material that is suitable for long-time stability is shorter than the light beam reduction absorptivity of 620nm easily with respect to wavelength.Particularly, with respect to the shorter light beam of wavelength ratio 620nm, this absorptivity is considerably reduced, and especially sharply reduces with respect to the shorter light beam of wavelength ratio 530nm.Therefore, with scope from the situation of the laser beam executive logging of 355nm to 455nm, weaken record susceptibility owing to absorptivity reduces, and to need the new design of employing new record principle as shown in this embodiment.

Be used to write down or reproduce the proportional reduction of wavelength of size and the light beam that will be used of the focus of application.Therefore, only, be lowered at wavelength under the situation of above-mentioned value, will (use wavelength: 650nm), attempt reducing track space or channel bit length with respect to the current DVD-R dish that belongs to conventional art by wavelength components from the position of focal spot size.; as after a while as described in " 3-2-A] require to use scope " according to the present embodiment technology; as long as use for example recording principle of traditional write-once type information storage medium of DVD-R dish, the problem that then will have track space or raceway groove bit length to be lowered.By utilizing the technology of following present embodiment design, can be proportional to above-mentioned wavelength and reduce track space or channel bit length.

The 1st chapter: the combination explanation of the constituent of information storage medium in the present embodiment

In the present embodiment, one of existence big technical characterictic is to have designed and is adapted to organic recording medium material (organic dye material) that wavelength is 620nm or littler light source.This organic recording medium (organic dye material) has unique characteristic (low to high characteristic), and promptly luminous reflectivity increases in a record mark, and this characteristic does not exist in traditional CD-R dish or DVD-R dish.Therefore, the technical characterictic of present embodiment and the novel effect that realizes thus will more effectively appear in the combination of structure, size or form (information record format) of this information storage medium of the feature that produces the organic recording materials (organic dye material) shown in the present embodiment.Information storage medium in the present embodiment has following constituent:

A] a kind of organic dyestuff recording sheet;

B] prefabricated form (for example pre-groove shape/size or pre-pit shape/size);

C] swing condition (such as wobble modulation method and swing changes shape, amplitude of fluctuation, and swing distribution method); And

D] form (form that for example is used for record data, these data will be recorded or be recorded in the information storage medium in advance).

The specific embodiment of constituent is as follows:

A1) maximum absorption wavelength λ _Max

A2) record mark polarity

A3) azo group-metal complex+Cu

A4) azo group-metal complex: negative ion+dyestuff: kation

A5) any coating type recording sheet

B1) pre-groove shape (being used for track space)

B2) pre-pit shape (being used for track space)

B3) groove shape and pit shape arbitrarily arbitrarily

C1)PSK

C2)FSK

C3)STW

C4) any modulating system

C5) amplitude of fluctuation tolerance

C6) any amplitude amount

D1) write once recording method

D2) H form

D3) B form

D4) extended formatting

D5) any recording method and the form in write-once medium

Hereinafter, will be in stage of explaining embodiment and provide description with respect to the assembled state of different embodiment.With regard to the constituent of not stipulating a combination, following feature is adopted in expression:

A5) coating type recording sheet arbitrarily;

B3) groove shape and one pit shape arbitrarily arbitrarily;

C4) modulating system arbitrarily;

C6) amplitude amount arbitrarily; With

D5) recording method arbitrarily and form in write-once medium.

The 2nd chapter: the difference explanation in the reproducing signal between phase-change recording film and organic dyestuff recording sheet

2-1) the difference on record/recording sheet principle and about the difference in the key concept of the generation of reproducing signal

Figure 1A illustrates the phase-change recording membrane structure (but being mainly used in the rewriting type information storage medium) of a standard, and Figure 1B illustrates the organic dyestuff recording sheet structure (being mainly used in the write-once type information storage medium) of a standard.In the explanation of present embodiment, whole recording sheet structure (comprising reflection layer 4-1 and 4-2) except printing opacity substrate 2-1 shown in Figure 1A and the 1B and 2-2 is defined as " recording sheet ", and distinguishes mutually with the recording layer 3-1 and the 3-2 that have placed recording materials.For the recording materials that use phase transformation, usually recording areas (in the record mark) and not the light characteristic variable quantity in the recording areas (outside the record mark) be little, so adopt a kind of relative variation ratio that structure improves reproducing signal that strengthens.Therefore, in the phase-change recording membrane structure shown in Figure 1A, a low lining middle layer 5 is placed between printing opacity substrate 2-1 and the phase change type recording layer 3-1, and a last table middle layer 6 is placed between reflection layer 4-2 and the phase change type recording layer 3-1.In the present invention, use that to belong to be that the polycarbonate of light-passing plastic material or polypropylene PMMA (polyisobutylene acid formicester) are as the material that is used for printing opacity substrate 2-1 and 2-2.Centre wavelength with in the present embodiment laser beam 7 is 405nm, and at the refractive index n of the polycarbonate of this wavelength ₂₁, n ₂₂Be to approach 1.62.

The most frequently used GeSbTe (germanium antimony amphoteric metal) of phase-change recording material that does is to the standard refraction rate n of 405nm at crystalline region ₃₁With absorption coefficient k ₃₁Be With And in noncrystalline domain be With

Therefore, the refractive index of phase-change recording medium (at noncrystalline domain) is different from the refractive index of printing opacity substrate 2-1, and occurs the reflection of laser beam 7 on interface layer easily in a phase-change recording membrane structure.As mentioned above, the problems such as the difference of structure and (2) interlayer refractive index is bigger of reason take to strengthen to(for) (1) phase-change recording membrane structure is, the result of interference of a plurality of folded light beams that the variation of the light volume reflection in reproducing in the record mark from be recorded in the phase-change recording film (from the light volume reflection of record mark with from the difference of the light volume reflection of recording areas not) can the interface of obtained conduct between low lining middle layer 5, recording layer 3-1, table middle layer 6 and reflection layer 4-2 produces.In Figure 1A, though laser beam 7 by obviously the interface between low lining middle layer 5 and the recording layer 3-1, recording layer 3-1 and should between the table middle layer 6 the interface and on reflect on the interface between table middle layer 6 and the reflection layer 4-2, the variation of the reflection light quantity in the reality is to obtain as the result of interference between a plurality of multipath reflection light beams.

By contrast, organic dyestuff recording sheet structure adopts a kind of very simple lamination structure of being made up of organic dyestuff recording layer 3-2 and reflection layer 4-2.Use the information storage medium (CD) of this organic dyestuff recording sheet to be referred to as the write-once type information storage medium, make CD to write down once.But but different with the rewriting type information storage medium that uses phase change recording medium, this medium can not be carried out processing is handled or rewritten to wiping of the information that has been recorded.Common organic dyestuff recording materials are often approaching in the refractive index of 405nm (various organic dyestuff recording materials are n in the ranges of indices of refraction of 405nm ₃₂=1.4 to 1.9), and absorption coefficient is often approaching (various organic dyestuff recording materials in the absorption coefficient scope of 405nm are To 0.2).Because the refractive index difference between organic dyestuff recording materials and the printing opacity substrate 2-2 is a little value, so occur the light volume reflection hardly on the interface between recording layer 3-2 and the printing opacity substrate 2-2.Therefore, the light of an organic coloring recording sheet reproduces principle (reflection light quantity changes the reason that takes place) not in the phase-change recording film " multiple interference ", and principal element be " for for the laser beam of returning after being reflected among the reflection layer 4-2 7 in light path light loss (comprising interference) midway ".The concrete reason that causes the light loss midway of a light path comprises " by the interference of the local phase difference generation that causes " or " the light absorption phenomenon among the recording layer 3-2 " in laser 7.The luminous reflectivity of the organic dyestuff recording sheet in the not recording areas on the mirror surface that does not have pre-groove or pre-pit is to come simply obtained by the value that an absorbing amount that deducts in the luminous reflectivity to laser beam 7 from reflection layer 4-2 when by recording layer 3-2 obtains.As mentioned above, this film is different from the phase-change recording film, and the luminous reflectivity of phase-change recording film is the calculating acquisition by " multiple interference ".

Dish (the fastness to light of the recording sheet (organic dyestuff recording sheet) of high density recordable DVD (HD DVD-R) of the blue laser that uses the wavelength X with 405nm now will be described.Test the fastness to light of this HDDVD-R by device with the air cooling xenon lamp that meets the ISO-105-B02 standard.According to the ISO-105-B02 standard, the temperature of black panel is not to be higher than 40 ℃ and relative humidity is 70-80%.From top with testing laser bundle vertical irradiation to the dish on.When satisfying condition fully after the test, this dish then is considered to the dish of checking by (proofed).

At first provide for the description that is used in as the recording principle in the existing DVD-R dish of conventional art.In existing DVD-R dish, when with laser beam 7 irradiation recording sheets, recording layer 3-2 absorbs the energy of laser beam 7 partly, and heating.If surpass a specified temp, then printing opacity substrate 2-2 will be by local deformation.Though the mechanism of initiation printing opacity substrate 2-2 distortion is difference along with the manufacturer of DVD-R dish, this mechanism is by due to the underlying cause:

1) local plastic deformation of the printing opacity substrate 2-2 that causes by the gasification energy of recording layer 3-2; And

2) heat delivered from recording layer 3-2 to printing opacity substrate 2-2, and the plastic yield of the printing opacity substrate 2-2 that causes by this heat.

If 2-2 by local plastic deformation, then will change the light path that laser beam 7 is reflected in reflection layer 4-2 by printing opacity substrate 2-2, this laser beam 7 is returned once more by printing opacity substrate 2-2.Between from laser beam 7 of record mark (i.e. the part of printing opacity substrate 2-2 by local plastic deformation return laser beam) and laser beam 7 (i.e. the laser beam of returning by the part of indeformable printing opacity substrate 2-2), phase differential takes place, and the light quantity that the folded light beam that caused by the interference between these light beams therefore occurs changes from the circumference of this record mark.And especially under the situation that above-mentioned mechanism (1) occurs, the essence refractive index n of the air pocket generation in the record mark among the recording layer 3-2 that causes by gasification (evaporation) ₃₂Change or the refractive index n that causes by the thermal decomposition of the organic dyestuff recording materials in the record mark ₃₂Variation, also impel the appearance of above-mentioned phase differential.In existing DVD-R dish, need recording layer 3-2 heating (promptly, gasification temperature with the recording layer 3-2 in the above-mentioned mechanism (1), or with the internal temperature in the above-mentioned mechanism (2)) to desired this recording layer of printing opacity substrate 2-2 plasticity reshaping 3-2, or need a part of heating of recording layer 3-2, so that cause thermal decomposition or gasification (evaporation), till printing opacity substrate 2-2 local deformation.In order to form record mark, need the power of a large amount of laser beam 7.

In order to form record mark, need recording layer 3-2 can absorb the energy of laser beam 7 in first stage.Light absorption frequency spectrum among the recording layer 3-2 will influence the record susceptibility of organic dyestuff recording sheet.Light absorption principle in the organic dyestuff recording materials that form recording layer 3-2 is described with reference to (A3) of present embodiment.

Fig. 2 illustrates the concrete structure formula of the particular content " (A3) azo-group metal complex compound+Cu " of information storage medium constituent.Circumference area around the central metal M of azo-group metal complex compound shown in Figure 2 is obtained as luminous zone 8.When laser beam 7 was passed luminous zone 8, the local electronic resonance in luminous zone 8 was to the electric field change of laser beam 7, and the energy of absorption laser beam 7.The value that will be laser beam wavelength with respect to the frequency inverted at a local electronic resonance maximum and the easiest endergonic electric field place is referred to as maximum absorption wavelength, and by λ _MaxExpression.Along with the increase of the scope (resonance range) of luminous zone shown in Figure 28, this maximum absorption wavelength λ _MaxMove to long wavelength side.In addition, by change central metal M atom change position range among Fig. 2 around the local electronic of central metal M (on the much degree of central metal M can electronics be attracted to this center near), and this maximum absorption wavelength λ _MaxValue change.

Though can foretell, be in the situation of absolute zero and a high pure luminous zone 8 only in temperature, the light absorption frequency spectrum of these organic dyestuff recording materials will be near maximum absorption wavelength λ _MaxNarrow line spectrum appears in the place, but the light absorption frequency spectrum of common organic recording materials that comprises impurity at normal temperatures and comprise a plurality of light absorption district is then with respect to around maximum absorption wavelength λ _MaxLight beam wavelength represent a wide optical absorption characteristics.

Fig. 3 illustrates the example of the light absorption spectral characteristic of the organic dyestuff recording materials that are used for current DVD-R dish.In Fig. 3, expression is for by being coated with the wavelength of the light beam that organic dyestuff recording sheet that the organic dye recording materials form will shine on transverse axis, in expression on the Z-axis when to have the absorptivity that obtains when light beams of different wavelengths is shone the organic dyestuff recording sheet.Absorptivity is a value that obtains so as used herein: promptly a state of having finished with respect to the write-once type information storage medium (or, wherein this recording layer 3-2 only has been formed on the state (formerly forming the state of reflection layer 4-2 with respect to the structure of Figure 1B) on the printing opacity substrate 2-2, by having the laser beam of incident intensity Io, measure laser light reflected light intensity Ir (the light intensity It of the laser beam that sends from recording layer 3-2 side) then from printing opacity substrate 2-2 one side input.Absorptivity Ar (At) is expressed as:

Ar≡-log ₁₀(Ir/Io) (A-1)

Ar≡-log ₁₀(It/Io) (A-2)

Except as otherwise noted, though being this absorptivity of supposition, the explanation that will be presented represents absorptivity Ar by a reflection shape of formula (A-1) expression, but might define absorptivity At by a transmission shape of formula (A-2) expression, unrestricted in the present embodiment.In the embodiment shown in fig. 3, have a plurality of light absorption district, each light absorption district all comprises luminous zone 8, thereby wherein has a plurality of positions, the maximum that absorptivity becomes on these positions.In this case, when absorptivity obtains maximal value, there are a plurality of maximum absorption wavelength λ _MaxThe wavelength of the recording laser in current DVD-R dish is set to 650nm.There are a plurality of maximum absorption wavelength λ in the present embodiment _MaxSituation in, near this maximum absorption wavelength λ of recording laser Shu Bochang _MaxBe important.Therefore, only in the description of present embodiment, this maximum absorption wavelength λ that is arranged near a position of the wavelength of this recording laser bundle _MaxBe defined as " λ _{Max write}"; And be different from other λ _Max(λ _Max0).

Fig. 4 A and 4B illustrate a comparison when forming a recording sheet with pre-pit district or pre-groove district 10.Fig. 4 A illustrates the shape relevant with the phase-change recording film.Form low lining middle layer 5, recording layer 3-1, under one of any situation of table middle layer 6 and reflection layer 4-1, can use the one of any of sputter vaporization precipitation, vacuum vapor deposition or ion plating method in a vacuum.The result is, in all layers, and the scrambling of accurately having duplicated printing opacity substrate 2-1 relatively.For example, be in rectangle or the trapezoidal situation at the cross sectional shape in the pre-pit district of printing opacity substrate 2-1 or pre-groove district 10, each cross sectional shape of this recording layer 3-1 and reflection layer 4-1 also is a rectangle or trapezoidal.

Fig. 4 B illustrates the common recording sheet cross sectional shape of existing DVD-R dish, and this existing DVD-R dish is to have used the organic dyestuff recording sheet as the conventional art under the situation of recording sheet.In this case, use and the diverse method that is called the method for spin coating (or spinner coating) as formation recording sheet 3-2 of method shown in Fig. 4 A.Spin coating method used herein is represented a kind of method, is used for: the organic dyestuff recording materials that form recording layer 3-2 are dissolved in a kind of organic solvent; One coating is added on the printing opacity substrate 2-2; Subsequently with this printing opacity substrate of high speed rotating 2-2, so that the coating agent is expanded to the outer circumferential sides of printing opacity substrate 2-2 with centrifugal force; And this organic solvent that gasifies, thereby form recording layer 3-2.Use the method, will use the processing that applies this organic solvent, so the surface of this recording layer 3-2 (with the interface of reflection layer 4-2) is flattened easily.The result is that the cross sectional shape on the interface between reflection layer 4-2 and the recording layer 3-2 is obtained for being different from the shape on this printing opacity substrate 2-2 surface (interface between printing opacity substrate 2-2 and recording layer 3-2).For example, in a pre-groove district, wherein the cross sectional shape at the surface of this printing opacity substrate 2-2 (interface between printing opacity substrate 2-2 and the recording layer 3-2) is a rectangle or trapezoidal, and then the cross sectional shape on the interface between reflection layer 4-2 and the recording layer 3-2 forms and is substantially the vee-cut shape.In a pre-pit district, above-mentioned cross sectional shape forms with the conical lateral surface shape substantially.And, in spin coating, therefore organic solvent accumulates in recessed portion easily, and the thickness Dg (promptly becoming the distance of a position of minimum point from the lower surface in pre-pit district or pre-groove district to the interface with respect to reflection layer 4-2) of the recording layer 3-2 in pre-pit district or pre-groove district 10 is greater than (the Dg＞Dl) of the thickness Dl groove bank district 12.The result is, the quantitative change of the scrambling on the interface between printing opacity substrate 2-2 in pre-pit district or pre-groove district 10 and the recording areas 3-2 gets in fact the amount less than the scrambling on printing opacity substrate 2-2 and recording layer 3-2.

As mentioned above, the shape of the scrambling on interface between printing opacity substrate 2-2 and the recording layer 3-2 weakens, and the amount of scrambling significantly diminishes.Therefore, in the situation that the shape and size of a lip-deep scrambling of printing opacity substrate 2 are equal to each other along with the difference in the method that is forming recording sheet, the diffracted intensity from this organic dyestuff recording sheet beam reflected when laser radiation will reduce more significantly than the diffracted intensity from phase-change recording film beam reflected.The result is with the comparison of use phase-change recording film, in the situation that the shape and size of the scrambling in (pre-pit district or pre-groove district 10) are equal to each other on the surface of printing opacity substrate 2, to use the unfavorable of traditional organic dyestuff recording sheet to be characterised in that:

Degree of modulation from the light reproducing signal in pre-pit district is little, and from the signal reproduction poor reliability in pre-pit district;

Almost can not from the pre-groove district, obtain enough big track displacement detection signal according to the push-pull type technology; With

Occur almost can not obtaining enough big swing detection signal in the situation of swing in the pre-groove district.

And in DVD-R dish, write down for example customizing messages of address information in little irregular (pit) shape in groove bank district, so the width W l in groove bank district 12 is greater than the width W g in pre-pit district or pre-groove district 10 (Wl＞Wg).

As described in " 2-1) the structural difference of recording principle/recording sheet and about the difference in the key concept of the generation of reproducing signal ", belong to the existing DVD-R of the write-once type information storage medium that is to use traditional organic dye material and total recording principle of CD-R and comprise " local plastic deformation of printing opacity substrate 2-2 " or " localized heat in recording layer 3-2 decomposes or " gasification " ".The state of plastic deformation of the concrete printing opacity substrate 2-2 that each of Fig. 5 A and 5B is illustrated in the write-once type information storage medium that uses traditional organic dye material in the position of record mark 9 part.The state of plastic deformation that has two quasi-representatives.Two kinds of situations are arranged, promptly in situation shown in Fig. 5 A, the degree of depth (in the example shown in Fig. 5 A, the depth as shallow of the basal surface 14 of the depth ratio of the basal surface 14 in the pre-groove district of record mark 9 positions in recording areas not) that is different from the basal surface in the pre-groove district 11 in recording areas not in the degree of depth of the basal surface 14 in the pre-groove district of record mark 9 positions (step amount relevant) with adjacent slot bank district 12; And in situation shown in Fig. 5 B, a basal surface 14 in the pre-groove district of record mark 9 positions is deformed and by crooked (flatness of lower surface 14 is deformed: in the situation shown in Fig. 5 B, the basal surface 14 in the pre-groove district of record mark 9 positions is by slightly towards the downside bending) slightly.The plastic yield scope of the printing opacity substrate 2-2 that the feature of two situations all is in the position of record mark 9 covers one on a large scale.In the existing DVD-R dish of conventional art, track space is 0.74 μ m, and channel bit length is 0.133 μ m.Under the situation of the degree of this higher value, even the plastic yield scope of the printing opacity substrate 2-2 of these record mark 9 positions has covered one on a large scale, also can more stable ground executive logging and reproduction processes.

But, if track space is narrower than 0.74 above-mentioned μ m, then the plastic yield scope at the printing opacity substrate 2-2 of record mark 9 positions will cover a wide region, therefore adjacent orbit affects adversely, and can because record mark 9 be widened to " intersection writes " that adjacent orbit produces or rewrite and the record mark 9 of adjacent orbit that makes existence by actual erase (can not be reproduced).In addition, in the direction of track (circumferencial direction),, then there is the problem that intersymbol interference occurs if channel bit length is narrower than 0.133 μ m; Bit error rate during reproduction significantly increases; And the reliability of reproducing reduces.

3-2) to the explanation of the total essential characteristic of in the present embodiment organic dyestuff recording sheet

3-2-A] require to use scope according to the present embodiment technology

Shown in 5A and 5B, in a localized heat decomposition in plastic yield that comprises printing opacity substrate 2-2 or recording sheet 3-2 or the traditional write-once type information storage medium of gasification phenomenon, description given below will be referred to which kind of degree track space is arrived by constriction when adverse effect occurring, maybe which kind of degree is channel bit length arrived by constriction when adverse effect occurring, and the result who has been obtained carried out the technology of discussing for a kind of reason of this adverse effect after.Under the situation of utilizing the traditional record principle, begin to occur adverse effect a scope indication be a scope (being suitable for highdensity realization) of the beneficial effect wherein realized by the novel recording principle shown in the present embodiment.

1) condition of the thickness Dg of recording layer 3-2

Attempt carrying out when making that heat is analyzed so that when showing the lower limit of the lower limit of admissible channel bit length or admissible track space in theory, can be become important by the scope of the thickness Dg of actual thermoanalytical recording layer 3-2.In traditional write-once type information storage medium (CD-R or DVD-R) of the plastic yield that comprises the printing opacity substrate 2-2 shown in Fig. 5 A and 5B, in record mark 9, provide the situation of information regeneration focus and under this point is situation in the not recording areas at recording layer 3-2, for the change of light volume reflection, maximum factor is " by in record mark 9 and the disturbing effect that causes of the difference between the light path in the recording areas not ".In addition, the main cause that causes its optical path difference be " change of the thickness Dg of the physical record layer 3-2 that produces by the plastic yield of printing opacity substrate 2-2 (and from the interface between printing opacity substrate 2-2 and the recording layer 3-2 to the physical distance between the interface recording layer 3-2 and the reflection layer 4-2), the and " refractive index n of the recording layer 3-2 in record mark 9 ₃₂Change ".Therefore, in record mark 9 with obtain enough reproducing signal (variation of light volume reflection) between the recording areas, when laser beam wavelength in a vacuum is defined as λ, the value of the thickness 3-2 in recording areas not need have can with λ/n ₃₂The size of comparing to a certain degree.If not, in record mark 9 with do not occur optical path difference (phase differential) between the recording areas, and the light disturbing effect becomes minimum.In fact, minimal condition is:

Dg≥λ/8n ₃₂ (1)

Must be satisfied, and the condition of expectation is:

Dg≥λ/4n ₃₂ (2)

Must be satisfied.

Under the situation of current discussion, suppose it is near λ=405nm.The organic dyestuff recording materials are at the refractive index n of 405nm ₃₂Value be from 1.3 to 2.0 scope.Therefore, as with n ₃₂The result of=2.0 substitution formula (1), the thickness Dg value that draws recording layer 3-2 conditionally is:

Dg≥25nm (3)

The organic dyestuff recording layer that relates at traditional write-once type information storage medium (CD-R or DVD-R) of the plastic yield that comprises printing opacity substrate 2-2 in this discussion of carrying out is associated with the light beam of 405nm.As described in after a while, though the related situation of the description that provides in the present embodiment is plastic yield and the absorption coefficient k that printing opacity substrate 2-2 does not wherein take place ₃₂Change be the principal element of recording principle, but must carry out track displacement detection, and therefore this refractive index n actually by using DPD (difference phase-detection) technology from record mark 9 ₃₂Change be in record mark 9, to cause.Therefore formula (3) becomes a condition that the plastic yield of printing opacity substrate 2-2 does not take place in the present embodiment and should satisfy.

And from another viewpoint, scope that can specific thickness Dg.Under the situation of the phase-change recording film shown in Fig. 4 A, when the refractive index of printing opacity substrate is n ₂₁The time, when using push-pull technique to obtain maximum track displacement detection signal, the step amount between pre-pit district and the groove bank district is λ/(8n ₂₁).But under the situation of the organic dyestuff recording sheet shown in Fig. 4 B, such as previously described, the shape on the interface between recording layer 3-2 and the reflection layer 4-2 is weakened, and step amount diminishes.Therefore need be than λ/(8n ₂₂) be increased in pre-pit district on the printing opacity substrate 2-2 and the step amount between the groove bank district more significantly, be used as in the situation of material of printing opacity substrate 2-2 at polycarbonate, in the refractive index of 405nm be Therefore must the step amount between pre-pit district and groove bank district be increased to significantly greater than 31nm.Under the situation of using spin coating technique, if the danger that the thickness Dg of the recording layer 3-2 in the pre-groove district greater than the step amount between pre-pit district on the printing opacity substrate 2-2 and groove bank district, then has the thickness Dl of the recording layer 3-2 in a groove bank district 12 to be eliminated.Therefore, from above-mentioned discussion result, be necessary to satisfy a condition:

Dg≥31nm (4)

The condition of formula (4) also is the plastic yield of printing opacity substrate 2-2 not to take place in the present embodiment and the condition that should satisfy.Though the condition at this lower limit has been shown, in formula (3) and (4) by in formula (2), partly substituting n at equal sign ₃₂=1.8 and the value that obtains Be used as heat and analyzed the thickness Dg of used recording layer 3-2.

Suppose that then polycarbonate is used as the standard material of printing opacity substrate 2-2,150 ℃ of estimated values that are set in the heat distortion temperature of printing opacity substrate 2-2 one side of the glass transition temperature of polycarbonate.In order to use heat analysis k is discussed ₃₂A value of=0.1 to 0.2 has been assumed to be the value to the absorption coefficient of the organic dyestuff recording sheet 3-2 of 405nm.And, made discussion for a kind of situation wherein, the NA value that focusing objective len during wherein by object lens and incident intensity distribute is NA=60, and H form ((D1): NA=0.65) with B form ((D2): NA=0.85) be assumed condition in traditional DVD-R form.

2) condition of the lower limit of channel bit length

In printing opacity substrate 2-2 one side, at making inspection along the vertical variation in the direction of the track in a district that reaches heat distortion temperature, when recording power changed, printing opacity substrate 2-2 contacted with recording layer 3-2.The lower limit of an admissible channel bit length of the window surplus when reproducing for consideration has been made discussion.The result is, if channel bit length is lower than 105nm slightly, then think vertically changing in the orbital direction to have occurred reaching in the district of heat distortion temperature, and think and to obtain enough window surpluses in printing opacity substrate 2-2 one side according to the slight variation of recording power.For thermoanalytical discussion, be the trend of a simulation shown in situation one of any in 0.60,0.65 and 0.85 in the NA value.Though change focal spot size by changing the NA value, believe that a possibility reason is thermal diffusion wide ranges (gradient in the Temperature Distribution of printing opacity substrate 2-2 (it will contact with a recording layer 3-2) side is milder).In above-mentioned heat is analyzed, the Temperature Distribution of printing opacity substrate 2-2 one side that touches recording layer 3-2 has been discussed, and the influence of the thickness Dg of recording layer 3-2 therefore do not occurred.

And in the situation of the generation of the printing opacity substrate 2-2 shown in Fig. 5 A and 5B alteration of form, the boundary position of substrate distorted area blurs (being indefinite), so the window surplus is reduced more significantly.When by electron microscope observation during, believe that the fuzzy quantity of the boundary position of this substrate distortion increases along with the increase of the value of the thickness Dg of recording layer 3-2 to the cross sectional shape in a district that forms record mark 9.For the effect that changes this temperature deformation district that causes by above-mentioned recording power, consider boundary position fuzzy of substrate distorted area, think that it must be the order of magnitude of twice of the thickness Dg of recording layer 3-2 that the lower limit of the channel bit length allowed is distributed in the position that is used for enough window surpluses, and wish that this lower limit is greater than 120nm.

Hereinbefore, mainly provided description for the thermoanalytical discussion of use in the situation that thermal deformation takes place at printing opacity substrate 2-2.Also a kind of situation of Cun Zaiing is, because another recording principle in traditional write-once type information storage medium (CD-R or DVD-R) (forming the mechanism of record mark 9), and the thermal deformation of the organic dyestuff recording materials that in recording layer 3-2, occur or gasification (evaporation), the plastic yield of this printing opacity substrate 2-2 is very little.Therefore, will provide description for this situation.Though the gasification of these organic dyestuff recording materials (evaporation) temperature is different along with the type of organic dye material, normally 220 ℃ to 370 ℃ temperature range, and heat decomposition temperature is lower than this scope.Though 150 ℃ of glass transition temperatures having supposed polycarbonate resin in the superincumbent discussion are as the temperature that reaches in the substrate distortion, but the temperature difference between 150 ℃ and 220 ℃ is less, and when printing opacity substrate 2-2 reached 150 ℃, the temperature in this recording layer 3-2 was above 220 ℃.Therefore, though there is exception along with the type of organic recording materials, even very little and the thermal decomposition or the gasification (evaporation) of the organic dyestuff recording materials in the recording layer mainly occur in the plastic yield of printing opacity substrate 2-2, but result who obtains and top discussion essence is identical as a result.

When summing up about the discussion of above-mentioned channel bit length as a result, in traditional write-once type information storage medium (CD-R or DVD-R) of the plastic yield that comprises printing opacity substrate 2-2, when channel bit length is narrower than 120nm, then think the decline that the window surplus occurred, if and this length is then thought to be difficult to stable reproduction further less than 105nm.In other words, when raceway groove position during, reach useful effect by using the novel recording principle shown in the present embodiment less than 120nm (105nm).

3) condition of track space lower limit

When recording layer 3-2 was exposed to recording power, recording layer 3-2 absorbed energy, and obtained high temperature.In traditional write-once type information storage medium (CD-R or DVD-R), must absorb energy with recording layer 3-2, till printing opacity substrate 2-2 reaches heat distortion temperature.Organic dyestuff recording materials recurring structure among the recording layer 3-2 changes and refractive index n ₃₂Or absorption coefficient k ₃₂It is much lower that the temperature that begins its variation begins the temperature that thermal deformation reaches than printing opacity substrate 2-2.Therefore, refractive index n ₃₂Or absorption coefficient k ₃₂The scope of the ratio broad of value in the recording layer 3-2 of the circumference of record mark 9 in change, by thermal deformation, as and if this variation causes " intersection writes " or " cross erasing " of adjacent orbit to this recording layer 3-2 in printing opacity substrate 2-2 one side.The lower limit of a track space might be set, wherein when printing opacity substrate 2-2 surpasses heat distortion temperature, not along with reaching the refractive index n that changes among this recording layer 3-2 ₃₂Or absorption coefficient k ₃₂Temperature a district width and " intersection writes " or " cross erasing " takes place.From top viewpoint, think that " intersection writes " or " cross erasing " appears at the position that wherein track space is equal to or less than 500nm.And, consider the influence that the crooked of information storage medium or the influence of tilting or recording power (recording power surplus) change, can conclude that track space is set to 600nm or is difficult more for a short time in traditional write-once type information storage medium (CD-R or DVD-R), energy is recorded layer 3-2 absorption till printing opacity substrate 2-2 reaches heat distortion temperature in described traditional write-once type information storage medium.

As mentioned above, even the NA value changes to 0.65 from 0.60, change to 0.85 then, but the reason of the gradient of the Temperature Distribution among the circumference recording layer 3-2 owing to having reached core at printing opacity substrate 2-2 for milder heat distortion temperature, so show similar in fact tendency, and this thermal diffusion scope is wide.For the very little situation of the plastic yield of printing opacity substrate 2-2 and for the thermal decomposition or the gasification (evaporation) of the organic dyestuff recording materials among the recording layer 3-2 mainly is in the situation about occurring according to another recording principle (forming the mechanism of this record mark 9) in this traditional write-once type information storage medium (CD-R or DVD-R), as the part " condition of the lower limit of (2) raceway groove position " as described in, obtained as realistic simulation result's the beginning " intersection writes " or the track pitch values of " cross erasing ".At above-mentioned reason, when track space is set to 600nm (500nm) or when lower, reaches beneficial effect by the recording principle that uses the novelty shown in the present embodiment.

3-2-B] the total essential characteristic of organic dyestuff recording materials among the present invention

As mentioned above, in the situation that the thermal decomposition of the organic dyestuff recording materials in the plastic yield of printing opacity substrate 2-2 among the very little and recording layer 3-2 or gasification (evaporation) mainly occur according to another recording principle in traditional write-once type information storage medium (CD-R or DVD-R) (forming the mechanism of record mark 9), the problem that exists is, form in the record mark 9 since in recording layer 3-2 or the surface of printing opacity substrate 2-2 reach a high-temperature, so can not constriction channel bit length or track space.In order to address the above problem, the present embodiment principal character is " creationary organic dye material ", wherein " a local light characteristic change in recording layer 3-2 that appears at a lower temperature be record principle ", and " be provided with wherein easily the environment (recording sheet structure or shape) of above-mentioned principle takes place and in recording layer 3-2, do not cause substrate distortion and gasification (evaporation) ".The concrete property of present embodiment can be listed as follows.

α] light characteristic change method within recording layer 3-2

The color development characteristic change

The variation of the light absorption of the local area that---by the change of the qualitative change (Fig. 2) of luminous zone 8 or the mole molecule absorption coefficient of light causes

Luminous zone 8 is destroyed partly or the size of luminous zone 8 changes, thereby changes the partial zones of actual light absorption.In this way, in record mark 9 amplitude (absorptivity) at λ _Max _WritePosition change, keep the profile (characteristic) of light absorption frequency spectrum (Fig. 3) itself simultaneously.

Change with the electronic structure (electronic shell) of the electronic correlation of contribution color development phenomenon

---according to the change of the light absorption frequency spectrum (Fig. 3) of the color fading reaction that causes by the cutting (decomposition of local molecular linkage) of local electronic layer, or the change of the dimension of luminous zone 8 or structure (Fig. 2)

Orientation or the molecule of arranging interior (intermolecular) change

---for example is according to the light characteristic change of the orientation change in the azo-group metal complex compound shown in Figure 2

The change of the molecular structure in molecule

---for example, make the discussion that relates to organic dye material, this organic dye material causes the thermal release of one of separation, anionicsite and cationic moiety between anionicsite and the cationic moiety and the tar phenomenon of molecular structure self-destruction and carbon atom precipitated (sex change is a black coal tar).The result is the refractive index n in record mark 9 ₃₂Or absorption coefficient k ₃₂With respect to a not recording areas change, realize that light reproduces.

β] recording sheet structure or shape are set, make the light characteristic that stably causes top [α] easily change:

The relevant particular content of the technology of---therewith will be described in detail in part " 3-2-C] be easy to generate the desirable recording sheet structure of the shown recording principle of present embodiment " and content subsequently.

γ] reduce recording power in order under a state, to form record mark, under this state, recording layer inside or printing opacity substrate surface are in lower temperature

---above light characteristic change in [α] be shown appear at the deformation temperature that is lower than printing opacity substrate 2-2 or the temperature of gasification (evaporation) temperature among the recording layer 3-2.Therefore, the exposure (recording power) that is reduced in the record prevents to surpass distortion temperature on the surface of printing opacity substrate 2-2, or prevents to surpass in recording layer 3-2 gasification (evaporation) temperature.This content after a while will be in part " 3-3) for the total recording characteristic of in the present embodiment organic dyestuff recording layer " detailed description.In addition, by contrast,, might determine whether to take place top variation at the light characteristic shown in [α] by in record, detecting optimum power value.

δ] be stabilized in an electronic structure in the luminous zone, and generation and ultraviolet ray or the relevant STRUCTURE DECOMPOSITION of playback light irradiation hardly

---, temperature in recording layer 3-2, will occur and raise when ultraviolet ray in reproducing shines recording layer 3-2 or playback light when shining recording layer 3-2.Need a kind of performance that seems contradiction, promptly avoid and the relevant bad change of characteristic that raises of this temperature, and with than the low temperature executive logging of gasification (evaporation) temperature among substrate deformation temperature or the recording layer 3-2.In the present embodiment, by " in the luminous zone, stablizing an electronic structure and " guarantee the above-mentioned performance that seems contradiction.Concrete technology contents will be described in " the 5th chapter: the specific descriptions of the embodiment of organic dyestuff recording sheet in the present embodiment ".

ε] at the situation of the bad change of reproducing signal that occurs by ultraviolet ray or playback light irradiation, improve the reliability of information reproduction

---in the present embodiment, though make technical conceive at " being stabilized in an electronic structure in the luminous zone ", but with because the partial cavity among the recording layer 3-2 that the reason of the plastic yield on the surface of this printing opacity substrate 2-2 or gasification (evaporation) produces compares, may greatly be reduced according to the reliability of the record mark 9 of the formation of the recording principle shown in the present embodiment.As its countermeasure, realize the beneficial effect of the high density and the reliability of recorded information in the present embodiment, combine strong error correcting capability (novel ECC block structure) simultaneously, as after a while at " the 7th chapter: the explanation of H form " with as described in " the 8th chapter: the explanation of B form ".And in the present embodiment, PRML (PRML) technology is used as a kind of reproducting method and uses, as described in part " 4-2: the explanation of reproducing circuit in the present embodiment ", combine in the ML demodulation error correcting technique simultaneously, and realize the high density and the reliability of recorded information.

In the middle of the concrete property of above-mentioned present embodiment, provided explanation for such fact, promptly [α] to [γ] is in order to realize " narrow gauge track spacing " and " narrow channel bit length " and the content of newly-designed technical conceive in the present embodiment.In addition, " narrow channel bit length " will realize " reduction of smallest record mark lengths ".Implication (target) about the present embodiment of its remainder [δ] and [ε] will be described in detail.In reproducing with the H form in the present embodiment, the speed (linear velocity) of passing through that the light by recording layer 3-2 passes focus is set to 6.61m/s, and the linear velocity in the B form is set at 5.0m/s in the scope of 10.2m/s.

Under any circumstance, the linear velocity in the reproduction in the present embodiment will be equal to or greater than 5m/s.As shown in figure 14, the starting position of the data importing district DTLDI in the H form is the diameter of 47.6mm.Also consider the B form, user data is recorded in the position that diameter is equal to or greater than 45mm.The inner periphery of diameter 45mm is 0.141m, and therefore when reproducing this position with the linear velocity of 5m/s, the gyro frequency of the information storage medium of acquisition is 35.4 revolutions per seconds.A method according to using according to the write-once type information storage medium of present embodiment will provide for example video image information of TV programme.For example, when the user presses " suspending (stopping) button " when reproducing user's record video image temporarily, then one is reproduced focus and will be trapped on the track that suspends the position.When this reproduction focus stopped on the track that suspends the position, the user can begin to reproduce to suspend the position afterwards by next " reproduction start button ".For example, press " suspend (temporarily stopping) button " the user afterwards, the user went to have immediately after the toilet family of objective calling party, can exist Pause key in a hour that the user receives a visitor to place the situation of down state in this case always.The write-once type information storage medium was made in one hour

Inferior rotation, and this focus of section tracking (130,000 times repeatedly reset) on same track at this moment.If because the playback that repeats causes the bad change of recording layer 3-2 and reproduces video image information after the section at this moment, then take over the video image that to see any part when the family was returned after one hour for use, therefore and become anger, and in situation worst, there is the danger that this problem is submitted to law court.Therefore, the condition of minimizing is, even such time-out was put one hour or longer (even occur in the same track continuous playback), if the video image information of record is not destroyed, then there is not vedio data to be ruined, need to guarantee to occur at least 100,000 repeat playback and also do not reproduce bad change appearance.Have a kind of rare situation, wherein the user with respect to same position, repeated to suspend (repeat playback) 10 times in one hour in general service condition.Therefore, make 1 when guaranteeing write-once type information storage medium expectation according to present embodiment, 000,000 repeat playback, the problem that general user can not occur using, and only otherwise bad change recording layer 3-2, the higher limit of repeat playback counting is set to about 1, be considered to enough 000,000 time.If the higher limit of this repeat playback counting is set to significantly exceed 1,000,000 time value, the inconvenience of " record susceptibility reduces " or " increase of medium price " will be arranged then.

In the situation of the higher limit that guarantees above-mentioned repetition counting, the reproducing power value becomes an important factor.In the present embodiment, with the scope that is provided with of formula (8) to (13) definition record power.Semiconductor laser beam is characterised in that, is being equal to or less than a maximum value of 1/80 of using performance number, and the continuous light irradiation is stable.Because this power of this use power peaked 1/80 is to begin the position of rayed (startup of beginning pattern) just, so may the emergence pattern saltus step.Therefore, under this rayed power, the light that reflects in the reflection layer 4-2 of information storage medium turns back to the semiconductor laser light source, " a back light noise " that always is changed to characteristic with the irradiation light quantity occurs.Therefore in the present embodiment, the value of reproducing power is configured to be lower than about 1/80 value of the value described on the right side of formula (12) or formula (13):

[light reproducing power]＞0.19 * (0.65/NA) ²* (V/6.6) (B-1)

[light reproducing power]＞0.19 * (0.65/NA) ²* (V/6.6) ^1.2(B-2)

In addition, the value of this optimum reproduction power is limited by the dynamic range of power monitoring photodetector.Though the information recording/regenerating unit 141 of Fig. 8 does not illustrate, the recoding/reproduction shaven head exists.This shaven head monitors the irradiation light quantity of semiconductor laser light source in conjunction with a photodetector.In the present embodiment, in order to improve the irradiation degree of accuracy of the light of this reproducing power in reproduce, this photodetector detects an irradiation light quantity, and feedback will be provided for an amount of electric current of semiconductor laser light source in rayed.In order to reduce the price of shaven head, need to use very cheap photodetector.Cheap photodetector that can be commercial is often with resin casting mold (around an optical detecting unit).

As disclosed in " the 0th chapter: use the explanation that concerns between wavelength and the present embodiment ", in the present embodiment 530nm or shorter wavelength (especially 455nm or shorter wavelength) are used as optical source wavelength.Under the situation of this wavelength coverage, if shine the light of this wavelength, (for example dark yellow is faded or is broken (tenderly white line), and this light detects characteristic and is compromised in the then degeneration that will occur in the time of will causing as irradiation ultraviolet radiation in order to the resin (mainly being epoxy resin) of casting mold optical detecting unit.Specifically, under the write-once type information storage medium situation shown in the present embodiment, may a castable resin degeneration appear owing to the pre-groove district 11 that storage medium has shown in Fig. 7 A, 7B and 7C.As the fuzzy detection system of the focusing of shaven head, in order to eliminate the adverse effect that produces by diffraction light from pre-groove district 11, the most frequent use is one " knife-edge technique ", forms the position at an image about information storage medium and specifies a photodetector (it is 3 to 10 times the order of magnitude that image forms magnification M).When this photodetector is placed on this image when forming position,,, and the resin that rayed thus causes may occurs and degenerate so high density light is irradiated onto on the castable resin because light beam is focused on this photodetector.This castable resin performance degradation master is because the reason of photon mode (light reaction) takes place, but might predict the higher limit of an allowed exposure of comparing with the irradiation light quantity in heat pattern (thermal excitation).Suppose worst case, suppose an optical system, wherein form the position and place a photodetector as shaven head at an image.

Described content as seen from " condition of the thickness Dg of (1) recording layer 3-2 " " 3-2-A] require to use the scope according to the present embodiment technology ", when the optkmal characteristics of occurrence record layer 3-2 change (heat pattern) when writing down in the present embodiment, think that temperature among the recording layer 3-2 temporarily rises in 80 ℃ to 150 ℃ the scope.Consider about 15 ℃ room temperature, temperature difference T _WriteScope from 65 ℃ to 135 ℃.The pulsed light irradiation when record, occurs, and the continuous light irradiation when reproducing, occurs.When reproducing, temperature rise and temperature difference T among the recording layer 3-2 appear _ReadWhen the image of the detection system in the shaven head forms magnification and is M, according to the 1/M of the optical density of the converging light of on recording layer 3-2, shining ²Therefore obtain to focus on the optical density of the detection lamp on the photodetector, according to the Δ T of rough estimation _Read/ M ²Temperature rise on the photodetector when obtaining to reproduce.Consider such fact, the upper density limit value that can be irradiated onto the light on the photodetector is by the conversion of temperature rise, so think that this higher limit is at Δ T _Read/ M ²≤ 1 ℃ the order of magnitude.The image of detection system formation magnification M generally is 3 to 10 times the order of magnitude in the shaven head, if supposition estimation magnification

Need reproducing power be set so that obtain:

ΔT _read/ΔT _write≤20 (B-3)

The dutycycle of the recording impulse when supposing record is estimated as 50%, then requires following content:

[optimum reproduction power]≤[optimal recording power]/10 (B-4)

Therefore, consider the formula of describing after a while (8) to (13) and above-mentioned formula (B-4), optimum reproduction power is designated as follows:

[optimum reproduction power]＜3 * (0.65/NA) ²* (V/6.6) (B-5)

[optimum reproduction power]＜3 * (0.65/NA) ²* (V/6.6) ^1/2(B-6)

[optimum reproduction power]＜2 * (0.65/NA) ²* (V/6.6) (B-7)

[optimum reproduction power]＜2 * (0.65/NA) ²* (V/6.6) ^1/2(B-8)

[optimum reproduction power]＜1.5 * (0.65/NA) ²* (V/6.6) (B-9)

[optimum reproduction power] 1.5 * (0.65/NA) ²* (V/6.6) ^1/2(B-10)

With reference to " 3-2-E) in essential characteristic at the thickness distribution that relates to recording layer in the present embodiment of parameter-definition " for example, when NA=0.65 and V=6.6m/s, obtain following relation:

[optimum reproduction power]＜3mW,

[optimum reproduction power]＜2mW, or

[optimum reproduction power]＜1.5mW.

In fact, when the fact of rotating with information storage medium and relatively move is compared, therefore photodetector is fixed, considers this fact, then needs this optimum reproduction power to be set to 1/3 or the littler order of magnitude of the value that obtains in above-mentioned formula.In the information recording/reproduction device according to present embodiment, the value of reproducing power is set to 0.4mW.

3-2-C] be easy to generate the desirable recording sheet structure of recording principle shown in the present embodiment

The description that provides is related to be used for the method (recording sheet structure or shape) of " environment is set ", wherein be easy to generate above-mentioned recording principle in the present embodiment.

As an environment that wherein may occur in the characteristic changing in the above-mentioned recording layer 3-2, the characteristic of present embodiment is, the technical design in recording sheet structure or shape, for example:

" in a district that forms record mark 9; critical temperature that the light characteristic variation may occur is exceeded; and will be no more than gasification (evaporation) temperature at the core of record mark 9, and the surface of the printing opacity substrate 2-2 record mark 9 cores near is no more than a hot temperature "

To the particular content that relate to above-mentioned explanation be described with reference to figure 6A, 6B and 6C.In Fig. 6 A, 6B and 6C, the light path of open (blank) arrow indication illuminating laser beam 7, and dotted arrow indication hot-fluid.Recording sheet structure shown in Fig. 6 A is indicated a kind of environment, and wherein most probable light characteristic occurs and changes within corresponding to the recording layer 3-2 of present embodiment.That is, in Fig. 6 A, the optional position that includes the recording layer 3-2 of organic dye recording materials all has formula (3) or formula (4) uniform thickness (thickness is enough big) in the scope is shown, and receives the irradiation of laser beam 7 with the direction perpendicular to recording layer 3-2.As describing in detail at " 6-1) reflection layer (material and thickness) ", silver alloy is used as the material of the reflection layer 4-2 in the present embodiment.Be not limited to silver alloy, comprise that the material of a metal with emergency light reflex coefficient has high heat conductance and thermal radiation property usually.Therefore, though make the temperature of recording layer 3-2 rise by the energy that absorbs illuminating laser beam 7, heat is towards the reflection layer 4-2 radiation with thermal radiation property.Though recording sheet is formed on the optional position with uniform shapes shown in Fig. 6 A, more uniform temperature rise appears within this recording layer 3-2, and is smaller at some α, the β of core and the temperature difference of γ.Therefore, when forming record mark 9, when the critical temperature that surpasses in the changes in optical properties of a α and β, be no more than gasification (evaporation) temperature at the some α of core; And the surperficial (not shown) that is present near the printing opacity substrate of the position of selecting α of core is no more than heat distortion temperature.

Comparatively speaking, shown in Fig. 6 B, the part of recording sheet 3-2 provides a step.At a δ and ε, the irradiation of laser beam 7 tilts to the direction that recording layer 3-2 arranges with a direction, therefore compares with the some α of core, and the exposure of the laser beam 7 of per unit area is reduced relatively.The result is that the temperature rise in the recording layer 3-2 of a δ and ε is lowered.And, there is heat radiation at a δ and ε towards reflection layer 4-2, therefore to compare with the some α of core, the temperature that reaches at a δ and ε is fully reduced.Therefore, heat flows to a α from a β, and heat flows to a γ from a α, and therefore the temperature difference that is relevant to the some α of core at a β and γ becomes very little.When writing down, be low value in the temperature rise amount of a β and γ, can not surpass at a β and α the critical temperature that light characteristic changes takes place.As the measure that overcomes this problem,, need to increase the exposure (recording power) of laser beam 7 for the generation (in order to produce a critical temperature or higher temperature) that causes light characteristic to change at a β and γ.In the recording sheet structure shown in Fig. 6 B, the some α of core is very big with respect to the temperature difference of a β and γ.Therefore, risen to when temperature that light characteristic changes appears in a β and γ in existing temperature, will be at the some α of core above gasification (evaporation) temperature, or select at this core that the surface of printing opacity substrate (not shown) is easy to above heat distortion temperature near the α.

In addition, even in the optional position on the surface of the recording layer 3-2 of laser beam 7 irradiation one side perpendicular to the direction of illumination of laser beam 7, but in the situation of thickness of this recording layer 3-2 along with change in location, a kind of structure will be provided, wherein be difficult to appear at according to the light characteristic in the recording layer 3-2 of present embodiment and change.For example shown in Fig. 6 C, consider a kind of situation, wherein the thickness Dl of recording layer 3-2 periphery is significantly less than the thickness Dg (for example formula (2) or formula (4) do not satisfy) of recording layer 3-2 central part branch α.Even at the some α of this core, though heat radiation towards reflection layer 4-2 takes place, the thickness Dg of recording layer 3-2 is enough big, therefore makes might realize accumulation of heat and reach a high temperature.Comparatively speaking, significantly little at the thickness Dl of a ξ and η, it is little not carry out this temperature rise of accumulation of heat towards the heat of reflection layer 4-2 irradiation.The result is, occur in order towards the heat radiation of a β, δ and ξ with towards the heat radiation of a γ, ε and η, and towards the heat radiation of reflection layer 4-2, shown in Fig. 6 B like that, the some α that causes at this core becomes very big with respect to the temperature difference of a β and γ.When the exposure (recording power) that increases laser beam 7 so that when a β and γ produce light characteristic and change (in order to produce critical temperature or higher temperature), will be above gasification (evaporation) temperature of the some α of core, or surpass heat distortion temperature easily on the surface of selecting near the printing opacity substrate (not shown) the α of this core.

According to foregoing and with reference to figure 7A, 7B and 7C, the description that relates to following content will be provided: the content that relates to the technical design of pre-groove shape/size in the present embodiment, be used to provide " setting of environment (structure of recording sheet or shape) ", recording principle wherein may occur according to present embodiment; And the content of the technical design that relates to the recording layer thickness distribution in the present embodiment.Fig. 7 A is illustrated in the recording sheet structure in traditional write-once type information storage medium of CD-R for example or DVD-R; And Fig. 7 B and 7C illustrate recording sheet structure in the present embodiment.Shown in Fig. 7 A, 7B and 7C, the record mark 9 among the present invention is formed in the pre-groove district 11.

3-2-D] with in the present embodiment the relevant essential characteristic of pre-groove shape/size

Shown in Fig. 7 A, many situations are wherein arranged, in traditional write-once type information storage medium of for example CD-R or DVD-R, form pre-groove district 11 with one " vee-cut ".Under such structure situation, as described in Fig. 6 B, the energy absorption efficiency of laser beam 7 is low, and the Temperature Distribution heterogeneity in recording layer 3-2 becomes very big.The characteristic of present embodiment is, for the perfect condition near Fig. 6 A, provides the flat shape of walking the direction quadrature with incoming laser beam 7 in the pre-groove district 11 of being somebody's turn to do " printing opacity substrate 2-2 " side at least.As described in reference to figure 6A, desirable is that this plane area is wide as much as possible.Therefore, second of present embodiment is characterised in that, provides plane area in pre-groove district 11, and the width W g in this pre-groove district 11 is greater than the width W l in groove bank district (Wg＞Wl).In this instructions, the width W l in the width W g in pre-groove district and groove bank district is defined in the different in width of a position, pass a plane with intermediate altitude on described position, this intermediate altitude is to become between the height of a position of the inclined surface in the highest and this pre-groove in the height at the place, planimetric position in pre-groove district and groove bank district.

Used heat analysis to make discussion, data have been recorded in the actual write-once type information storage medium that is produced as prototype, be made in the substrate deformation observation that the position of record mark 9 is caused by section S EM (scanning electron microscope) image, and repeated in recording layer 3-2, to exist or do not exist because the observation of the cavity of gasification (evaporation) generation.Found that, thereby, will obtain useful effect by the width W g in pre-groove district being widened more significantly width W l greater than groove bank district.And the ratio of pre-groove sector width Wg and groove bank sector width Wl is Wg: Wl=6: 4, and be contemplated to be greater than Wg: Wl=7: 3, therefore think that the local light characteristic variations in recording layer 3-2 may occur, and should change in record more stable.As mentioned above, when the difference between pre-groove sector width Wg and the groove bank sector width Wl increases, eliminated a platform surface from the top in groove bank district 12, shown in Fig. 7 C.In traditional DVD-R dish, pre-pit (groove bank pre-pit: not shown) is formed in the groove bank district 12, and wherein realizes being used for the form of recording address information etc. in advance.Therefore, forming platform area in groove bank district 12 is compulsory measure with good conditionsi.The result is to form pre-groove district 11 with " vee-cut ".In addition, in traditional CD-R dish, utilize frequency modulation that swinging signal is recorded in the pre-groove district 11.In the frequency modulation system in traditional CD-R dish, slot time (providing the specification specified of each form in detail) is not constant, and the phase place adjustment in wobble signal detection (PLL:PLL's (phaselocked loop) is synchronous) is relatively more difficult.Therefore, the wall in pre-groove district 11 quilt is concentrated (making near this V-groove), and near a center, the intensity of the reproduction focus at this center is the highest, and the increase of amplitude of fluctuation tolerance, has therefore guaranteed the degree of accuracy of wobble signal detection.Shown in 7B and 7C, after the platform area in widening the pre-groove district 11 of present embodiment, when the inclined surface in pre-groove district 11 relatively moves on to the outside of the center of reproducing focus, will be difficult to obtain a swing detection signal.Present embodiment is characterised in that, widen the width W g in above-mentioned pre-groove district and in conjunction with having utilized the H form of the PSK (phase-shift keying (PSK)) that wherein always keeps the slot time of swing detection regularly or having utilized the B form of FSK (frequency shift keying) or STW (saw-tooth wobble), thereby guarantee stable recording characteristic (being suitable for high-speed record or layering), and guarantee stable wobble signal detection characteristic at low recording power.Particularly in the H form, except above-mentioned combination, " ratio of wobble modulation is lowered to the ratio of the wobble modulation that is lower than non-modulation district significantly ", thus help more significantly in wobble signal detection synchronously, and the further feature of stable oscillation input more significantly.

3-2-E] the essential characteristic of thickness distribution of recording layer 3-2 in the relevant present embodiment

In this manual, shown in Fig. 7 B and 7C, the recording layer 3-2 in the groove bank district 12 is defined as thickness Dl in the groove bank district 12 for the thickness of a thickest part; And recording layer 3-2 is that a thickest part is defined as the recording layer thickness Dg in the pre-groove district in pre-groove district 11.With reference to as described in Fig. 6 C, the recording layer thickness Dl in the groove bank district is increased relatively as, therefore, the local light characteristic change in this recording layer can stably appear at write down in.

In the same way as described above, used heat analysis to make discussion, data have been recorded in the actual write-once type information storage medium that is produced as prototype, have made the substrate deformation observation in the position of record mark 9 with section S EM (scanning electron microscope) image and to there is or do not exist the observation by the cavity of gasification (evaporation) generation in recording layer 3-2.The result has been found that recording layer thickness Dg in need the pre-groove district and the ratio between the recording layer thickness Dl in groove bank district are set to be equal to or less than Dg: Dl=4: 1.And Dg: Dl=3 is set: 1, and expectation is provided with Dg: Dl=2: 1, thus make the stability that might guarantee recording principle in an embodiment.

As one of the content of " 3-2-B] the total essential characteristic of organic dyestuff recording materials in the present embodiment ", the feature of present embodiment is recording power control, as described at item [γ].

Local light characteristic changing among the recording layer 3-2 that takes place with temperature causes the formation of this record mark 9, and this temperature is more much lower than the plastic deformation temperatures of traditional printing opacity substrate 2-2 with the heat decomposition temperature among the recording layer 3-2 or with gasification (evaporation) temperature the time.Therefore, the higher limit of recording power is limited, so that does not guarantee that this printing opacity substrate 2-2 part exceeds plastic deformation temperatures in writing down, or surpasses heat decomposition temperature or gasification (evaporation) temperature partly in this recording layer 3-2.

Thermoanalytical discussion is used in contrast, by using after a while the equipment in the explanation of the reproducer of present embodiment or the structure of recording/reproducing apparatus and feature " 4-1) ", described and, being made in the displaying that comes the optimum power value in the executive logging situation according to the recording principle shown in the present embodiment by using after a while the record condition of description in " 4-3) in the present embodiment the explanation of record condition ".Numerical aperture (NA) value of the object lens of the recording/reproducing apparatus that uses in demonstration test is 0.65, and the linear velocity when writing down is 6.61m/s.As the value (peak power) of the recording power of definition in " 4-3) in the present embodiment the explanation of record condition " subsequently, have been found that:

Most of organic dyestuff recording materials are with 30mW generating gasification (evaporation), and occur cavity in record mark;

... near the temperature of the position of this printing opacity substrate 2-2 recording layer 3-2 obviously exceeds glass transition temperature;

Near the position of the temperature of this printing opacity substrate 2-2 recording layer 3-2 reaches plastic deformation temperatures (glass transition temperature) with 20mW;

Consider surplus, the recording power of for example surperficial prebuckling or information storage medium changes, expectation 15mW or littler.

Above-mentioned " recording power " expression shine recording layer 3-2 exposure get and.Obtain focus center part and this optical intensity density for the optical energy density of a highest part as the parameter that is used for discussing in the present embodiment.Focus size is inversely proportional to the NA value, and therefore in the optical energy density of this focus center part and square proportional increase of NA value.Therefore, by using following correlation formula, current value can be converted into a value of the B form described after a while or another form (another NA value) optimal recording power in (D3):

[being applicable to the recording power of different N A value]=[recording power when NA=0.65] * 0.65 ²/ NA ²(5)

And optimal recording power changes according to the linear velocity V in the phase-change recording section bar material.Usually, 1/2 power that optimal recording power is proportional to the linear velocity in phase-change recording section bar material changes, and the linear velocity V that is proportional in the organic dyestuff recording materials changes.Therefore, consideration is obtained as follows by the conversion formula of the optimal recording power of the linear velocity V of extends equation (5) acquisition:

[recording power usually]=[recording power when NA=0.65; 6.6m/s] * (0.65/NA) ²* (V/6.6) (6)

Or

[recording power usually]=[recording power when NA=0.65; 6.6m/s] * (0.65/NA) ²* V/6.6) ^1/2(7)

When summing up above-mentioned discussion as a result the time, as the recording power that is used to guarantee recording principle shown in the present embodiment, the higher limit of desired setting is:

[optimal recording power]＜30 * (0.65/NA) ²* (V/6.6) (8)

[optimal recording power]＜30 * (0.65/NA) ²* (V/6.6) ^1/2(9)

[optimal recording power]＜20 * (0.65/NA) ²* (V/6.6) (10)

[optimal recording power]＜20 * (0.65/NA) ²* (V/6.6) ^1/2(11)

[optimal recording power]＜15 * (0.65/NA) ²* (V/6.6) (12)

[optimal recording power]＜15 * (0.65/NA) ²* (V/6.6) ^1/2(13)

From above-mentioned formula, be reached as a mandatory condition at the condition of formula (8) or formula (9); Reach a goal condition at formula (10) or formula (11); And the condition at formula (12) or formula (13) of reaching is as desired conditions.

3-4) relate to the behavioral illustrations of " H-L " recording sheet in the present embodiment

Recording sheet with the feature of " the light volume reflection in record mark 9 is lower than the light volume reflection in recording areas not " is called as " H-L " recording sheet.On the contrary, the high recording sheet of wherein above-mentioned smooth volume reflection is called as " L-H " recording sheet.In these recording sheets, for " H-L " recording sheet, present embodiment is characterised in that:

1) provide a higher limit with a ratio, this ratio is that the absorptivity of playback wavelength is with respect to the λ at the light absorption frequency spectrum _{Max write}The ratio of the absorptivity of position; And

2) change the light absorption frequency spectrum profiles, to form a record mark.

In the H of present embodiment form, as a kind of modulating system, adopt ETM (eight to 12: 8 Bit data codes convert 12 raceway groove positions to) and RLL (1,10) (in the sign indicating number broomrape after modulation, the minimum oppositely length relevant with 12 channel bit length T is 2T, and maximum reverse length is 11T).Wherein carry out after a while the performance evaluation of the reproducing circuit of in the explanation of present embodiment reproducing circuit " 4-2) ", describing,, need to have found satisfied [at I for the stable reproduction of carrying out this reproducing circuit _11HWith reproducing signal amount I from the record mark with sufficiently long length (11T) _11LBetween difference I ₁₁≡ I _11H-I _11L] ratio be:

I ₁₁/ I _11H〉=0.4 (20) or preferably,

I ₁₁/I _11H＞0.2 (21)

In the present embodiment, in the signal reproduction of high density recording, utilizing a kind of PRML (PRML) method.In order correctly to carry out detection, require the linearity of reproducing signal according to the PRML technology.

In order to ensure the linearity of above-mentioned reproducing signal, have been found that when the record mark with 3T length and from the reproducing signal amplitude of the repeating signal of record space not for being defined as I ₃The time, need to satisfy with respect to above-mentioned I ₁₁A proportionate relationship:

I ₃/ I ₁₁〉=0.35 (22); Or preferably

I ₃/I ₁₁＞0.2 (23)

As the method that is used to select the organic dye material that is suitable for concrete " H-L " recording layer, according to an optical thin film design in the present embodiment, selecting a kind of refraction factor scope under recording status not is n ₃₂=1.3 to 2.0 organic dye material; The absorption coefficient scope is k ₃₂=0.1 to 0.2, expectation n ₃₂=1.7 to 1.9; The absorption coefficient scope is k ₃₂=0.15 to 0.17, and satisfy above-mentioned a series of conditions.

In " H-L " recording sheet, in the light absorption frequency spectrum of recording areas not, though λ _Max _WriteWavelength ratio playback light or recoding/reproduction light wavelength (for example 405nm) shorter, but this is not limited λ _{Max write}Wavelength can be longer than playback light or recoding/reproduction light wavelength (for example 405nm).

In order to satisfy above-mentioned formula (22) or formula (23), the thickness Dg of recording layer 3-2 will be affected.For example, if the thickness Dg of recording layer 3-2 obviously surpasses allowable value, that a part of light characteristic that then only contacts with printing opacity substrate 2-2 in recording layer 3-2 just changes along with the state of the formation of record mark 9, therefore touches the value that the obtained conduct of light characteristic of that a part of recording layer 3-2 of the reflection layer 4-2 of adjacent its position equates with light characteristic value in recording areas not.The result is that the change of reproduction light quantity is lowered, and I in formula (22) or the formula (23) ₃Value is reduced, and can't satisfy a condition of formula (22) or formula (23).Therefore, in order to satisfy formula (22), shown in Fig. 7 B and 7C, must change that part of optical signature that in record mark 9, touches reflection layer 4-2.And, if the thickness Dg of recording layer 3-2 exceeds an allowable value significantly, the thermograde on the thickness direction then will appear when forming record mark.Subsequently, before that part of this reflection layer of contact 4-2 reaches the light characteristic transformation temperature in this recording layer 3-2, will promptly surpass the heat distortion temperature in this printing opacity substrate 2-2 above gasification (evaporation) temperature of a part that touches printing opacity substrate 2-2.At above-mentioned reason, in the present embodiment in order to satisfy formula (22), according to thermoanalytical discussion, the thickness Dg of recording layer 3-2 is set to " 3T " or littler; And a condition that satisfies formula (23) is that the thickness Dg of this recording layer 3-2 is set to " 3 * 3T " or littler.In fact, be equal to or less than in the situation of " 3T " at the thickness Dg of recording layer 3-2, though can satisfy formula (22), but consider by the surface of write-once type information storage medium and move or the influence of the surplus that the crooked inclination that produces or relevant focus are fuzzy that this thickness can be set to " T " or littler.Consider the result by previously described formula (1) and (2) acquisition, the thickness Dg of this recording layer 3-2 is set in the scope in the minimal condition of a requirement of appointment in the present embodiment:

9T≥Dg≥λ/8n ₃₂ (27)

And in the condition of an expectation:

3T≥Dg≥λ/4n ₃₂ (28)

Be not restricted under this condition, the most extreme condition can be defined as:

T≥Dg≥λ/4n ₃₂ (29)

Such as described later, the value of the channel bit length T in the H form is 102nm, and is that 69nm is to 80nm in the B form.Therefore, the value of 3T is 306nm in the H form, is that 207nm is to 240nm in the B form.The value of 9T is 918nm in the H form, is that 621nm is to 720nm in the B form.Though described " H-L " recording sheet at this, the condition that is used for formula (27) to (29) can be used for " L-H " recording sheet and not be restricted to this.

4-1) the explanation of the structure of reproducer in the present embodiment or recording/reproducing apparatus and feature

Fig. 8 represents the topology example figure according to an embodiment of information recording/reproduction device of the present invention.Among Fig. 8, the high-end expression mainly of control module 143 is used for a kind of information recording control system of information storage medium.In the information reproduction device of present embodiment, get rid of the structure of information recording control system among Fig. 8 corresponding to said structure.Among Fig. 8, the flowing of main information of reproducing signal or tracer signal specified in heavy line arrow indication; The fine line arrow is represented information flow; Dash-dot arrows is represented the reference clock circuit; The fine dotted line arrow represents to order direction indication.

The shaven head (not shown) is placed in the information recording/regenerating unit 141 shown in Fig. 8.In the present embodiment, the wavelength of the light source (semiconductor laser) of use in shaven head is 405nm, but present embodiment is not limited thereto, and it is such as previously described, can use to have the light source that equals or be shorter than 620nm or 530nm use wavelength, or the light source of scope from 355nm to 455nm.In addition, be used for to be bonded to this shaven head to two objective lenss that above-mentioned wavelength light beam focuses on the information storage medium.In situation, use that to have the NA value be 065 object lens for the information storage medium executive logging of H form/reproduction operation.A structure that provides makes in the situation for B format information storage medium executive logging/reproduction operation, uses the object lens with NA=0.85.As an intensity distribution of incident light before light incides object lens just promptly, when intensity is set to " 1 " when the center, be called as " RIM intensity " at the relative light intensity of object lens circumference (boundary position in aperture).The value of the RIM intensity in the H form is set in 55% to 70% scope.At this moment, making it use wavelength X with respect to one to the corrugated amount distortion in the shaven head do optical design is 0.33 λ, (0.33 λ or littler).

In the present embodiment, PRML (PRML) is used to information regeneration, so that realize the high density (point [A]) of information storage medium.As the result of various tests, as PR (1,2,2,2,1) is used as the PR time-like that to be used, when servo correction mistake fuzzy when focus for example or the track displacement has occurred, can increase line density and improve the reliability (can improve the demodulation reliability) of reproducing signal.Therefore, use PR (1,2,2,2,1) (point [A1]) in the present embodiment.In the present embodiment, according to (d, a k; M, n) (in said method, the RLL (d, k)) of this expression m/n modulation modulates raceway groove bit pattern afterwards and is recorded in the information storage medium modulating rule.

Specifically, be used for 8 bit data are converted to 12 raceway groove position (m=8, n=12) ETM (8 to 12 modulation) is used as a modulation system, and wherein has a RLL (1 of the minimum value of " 0 " continuously, 10) condition is defined as d=1, and maximal value is defined as the RLL restriction that k=10 limits as running length, so that the length of " 0 " back that must satisfy for the raceway groove bit pattern after the modulation applies restriction.In the present embodiment, in order to realize highdensity information storage medium, raceway groove interdigit crack is reduced to minimum.The result is, be after the pattern " 101010101010101010101010 " of a repetition of pattern of d=1 has been recorded in information storage medium for example belonging to, in information recording/regenerating unit 141, reproduce in this data conditions, these data form the signal amplitude of the primary signal of a reproduction near the frequency of closing of the MTF characteristic with reproduction optical system with a kind of shape of almost being hidden by noise.Therefore, PRML (PRML) technology is used as a kind of method of reproducing record mark or pit, this record mark or pit are by an intensive limit degree to MTF characteristic (closing frequency).That is, 141 signals that reproduce bear the reproduction waveform correction that is undertaken by PR equalizing circuit 130 from the information recording/regenerating unit.

By being the conversion of signals through PR equalizing circuit 130 digital quantity, according to a timing of the reference clock of sending from reference clock generation circuit 160 198, the signal of PR equalizing circuit 130 has been passed through in sampling; The signal of sampling converts a numerical data to by AD converter 169; And in Viterbi decoder 156, carry out the Veterbi decoding process.The data of Veterbi decoding are processed into the data that are quite analogous to binary data with traditional clipping lever.In the situation of using this PRML technology,, then will increase Veterbi decoding error rates of data afterwards if the sampling timing that is obtained by AD converter 169 is offset.Therefore, in order to improve the precision of sampling timing, has special other sampling timing sampling circuit (combination of Schmidt (Schmidt) trigger two evolution circuit 155 and PLL circuit 174) according to the information reproduction device or the information recording/reproduction device of present embodiment.This schmidt trigger circuit 155 has a particular value (forward voltage values of reality diode) at the restriction datum that is used for carrying out binarization, and is characterised in that, binarization only just is provided when this concrete width has been exceeded.Therefore, as mentioned above, for example in the situation of a pattern importing " 101010101010101010101010 ", signal amplitude is very little, does not therefore carry out the switching of binarization.For example in the situation that " 1001001001001001001001 " isotype rarer than above-mentioned pattern has been transfused to, the amplitude of reproducing primary signal increases, and therefore basis is switched by the polarity of the timing generation binary signal of " 1 " of Schmidt trigger two evolution circuit 155.In the present embodiment, use NRZI (non-return-to-zero is reverse) technology, and the position of " 1 " of above-mentioned pattern overlaps with the marginal portion (boundary member) of record mark or pit.

PLL circuit 174 detect belong to be Schmidt trigger two evolution circuit 155 output binary signal and produce frequency between the signal that circuit 160 sends reference clocks 198 from reference clock and the skew the phase place so that change the frequency and the phase place of the output clock of PLL circuit 174.Output signal and the decoding characteristics information on Viterbi decoder 156 by using PLL circuit 174 and assemble length (about the information in the path metric storer of Viterbi decoder 156 (to the distance of assembling), though do not specifically illustrate), reference clock produces circuit 160 feedback is applied to (frequency and the phase place) of a reference clock 198, so that be reduced in the bit error rate after the Veterbi decoding.Produce reference clock 198 that circuit 160 produces by reference clock and be used as reference the timing of reproducing signal in handling.

Synchronous code position sampling unit 145 is used for detecting the appearance and the position of the synchronous code of the output data sequence that coexists as Viterbi decoder 156, and the starting position of the above-mentioned output data of sampling.When this starting position was defined as a reference, demodulator circuit 152 was carried out demodulation process for the data that are temporarily stored in the shift-register circuit 170.In the present embodiment, the conversion table of reference record in demodulation conversion table record cell 154, above-mentioned temporal data is by serving as that the basis turns back to raw bits pattern on the 12-raceway groove by turn.Then, carry out correction process, and carry out descrambling by descrambling circuit 159 by ECC decoding circuit 162.In advance by wobble modulation address information recording in information storage medium according to the record type (rewritable type or write-once type) of present embodiment.Wobble signal detection unit 135 reproduces this address information (promptly judging the content of swinging signal), and being provided to control module 143 in order to provide for the needed information of the access of a desired locations.

Now provide about being provided at than the more description of the information recording control system of high position of control module 143.According at the record position on the information storage medium after data ID generation unit 165 produces the data ID information, when producing copy control informations, be added to information by data ID, IED, CPR_MAI and EDC adding device 168 records about the various information of data ID, IED, CPR_MAI and EDC by CPR_MAI data generation unit 167.After the information that should add by scrambling circuit 157 scramblings, form an ECC piece by ECC coding circuit 161, and the ECC piece is converted to the raceway groove bit pattern by modulation circuit 151.Add synchronous codes by synchronous code generation/adding device 146, and data are recorded in the information storage medium with information recording/regenerating unit 141.In modulation, sequentially calculate modulation DSV value afterwards by DSV (digital sum value) computing unit 148, and should the continuous value of calculating be fed, so that after modulation, do code conversion.

Fig. 9 illustrates the detailed structure of the peripheral hardware part that comprises synchronous code position detector shown in Figure 8 unit 145.Synchronous code comprises sync bit error detecting code part and has fixed mode variable code part.From the raceway groove bit pattern of Viterbi decoder output, sync bit error detecting code detector cell 182 detects the position of a sync bit error detecting code part with said fixing pattern.Variable code buanch unit 183 and 184 samplings are about being present in before this detection position the data with afterwards a variable code, and judge this synchronous code is arranged in which synchronization frame of sector, detect this synchronous code with recognition unit 185, so that detect a sync bit with said fixing pattern.According to the order of demodulation process unit 188 in shift-register circuit 170, the demodulator circuit 152 and ECC decoding circuit 162, the user profile that is recorded on the information storage medium is shifted in turn.

In the present embodiment, by in the data field, the reproduction of data importing district and data leading-out zone uses the PRML system, realized the highdensity H form (especially having improved line density) of information storage medium.In addition, guaranteed the compatibility with present DVD, and guaranteed to reproduce stability by using at a clipping lever detection system of in system's Lead-In Area and system's leading-out zone, reproducing.(will provide detailed description at " the 7th chapter: the explanation of H form " of back.)

The 5th chapter: the specific descriptions of the organic dyestuff recording sheet in the present embodiment

5-1) the behavioral illustrations that relates to " L-H " recording sheet in the present embodiment

To provide description for " L-H " recording sheet, the characteristic that should " L-H " recording sheet has is, and do not comparing in the recording areas, and the light volume reflection in record mark is lowered.In the middle of the recording principle of in " 3-2-B] the total essential characteristic of organic dyestuff recording materials the present embodiment ", describing, using the recording principle under this recording sheet situation mainly to utilize following arbitrary principle:

The color development characteristic changing;

The change [color fading reaction etc.] of the electronic structure (electronic shell) relevant with the composition of contribution color development phenomenon; And

Permutations between molecule, and the characteristic of change light absorption frequency spectrum.Should " L-H " recording sheet be characterised in that, considered to have the single-surface double-layer structure read-only type information storage medium feature and stipulated volume reflection scope in not record position and record position.

Figure 10 illustrates the non-record position of various recording sheets in the present embodiment and the reflection coefficient of record position.In the situation of using the H form (with reference to " the 7th chapter: the instructions of H form "), signal occurs with one in this " L-H " recording sheet identical direction that embeds district (for example system's Lead-In Area SYLDI) and a record mark district (data importing district DTLDI, data leading-out zone DTLDO or data field DTA), and a groove level is defined as a reference simultaneously.Similar, in " H-L " recording sheet, when the groove level was defined as reference, signal occurred with the opposite direction that embeds a district (for example system's Lead-In Area SYSDI) and a record mark district (data importing district DTLDI, data leading-out zone DTLDO or data field DTA) at.Utilize this phenomenon, except being used for the identification of the recording sheet between " L-H " recording sheet and " H-L " recording sheet, also having promoted design corresponding to the testing circuit of " L-H " recording sheet and " H-L " recording sheet.In addition, adjust the reproducing signal characteristic that obtains the record mark from " L-H " recording sheet shown in the present embodiment, so that meet the characteristics of signals that obtains from " H-L " recording sheet, so that satisfy formula (20) to (23).In this way, using under " L-H " recording sheet and any one situation of " H-L " recording sheet, can use identical signal processor circuit, and this signal processor circuit can be simplified and reduce price.

With reference to figure 27A and 27B, with the description that provides about another embodiment relevant with the embodiment of relation in the luminous reflectivity that illustrates between " H-L " recording sheet shown in Figure 10 and " L-H " recording sheet.

In the present embodiment, shown in Fig. 7 B and 7C, the width W g in pre-groove district 11 is set to be wider than the width W l in groove bank district 12.Like this, according to present embodiment, when (inside of data importing district DTLDI or data field DTA and data leading-out zone DTLDO) goes up the execution tracking in pre-groove district 11, from the signal level (Iot) in pre-groove district 11 _GrooveIncrease.

In the present embodiment, as described below, define " luminous reflectivity " by using by the detected detection signal level of shaven head.

At first, incident light quantity I _OCollimated laser beam be irradiated to the given zone that does not have meticulous non-systematicness, such as the pre-pit or the pre-groove of information storage medium 1101; Reflection light quantity I from the collimated laser beam of information storage medium 1101 reflection _RBe measured to; And value R _S=I _R/ I _OBe used as luminous reflectivity R _SLike this, the value of not using shaven head to measure is defined as the correcting optical reflectance coefficients R _SNext, be defined as reflected optical power D by the detection signal level of using shaven head on its fate, to detect _S, and value (R _S/ D _S) be used as with by use shaven head each position probing of information storage medium 1101 to detection signal level convert the conversion coefficient of " luminous reflectivity " to.

According to present embodiment, the reflection coefficient of information storage medium is designated, and the scope of the luminous reflectivity of the Lead-In Area SYLDI of system of feasible " H-L " recording sheet is from 16% to 32%.

In addition, according to present embodiment, the light volume reflection (Iot) in the not recording areas in high level appointment " H-L " recording sheet _GrooveTo the light volume reflection I among the Lead-In Area SYLDI of system _11HPRatio (Iot) _Groove/ I _11HPThereby, be included in 0.5 to 1.0 the scope.Shown in Fig. 7 B and 7C, the width W g in pre-groove district 11 is narrower than the width W l in groove bank district 12, thereby has increased (Iot) _GrooveLevel.Specifically, in " H-L " recording sheet, the thickness Dg of recording layer 2-3 increases, thereby has reduced the step difference Hr between trench area and the groove bank district.Like this, (Iot) _GrooveLevel increase, thereby (Iot) _Groove/ I _11HPValue be 50% or more.As a result, from the light volume reflection I that is recorded in the record mark in the trench area 11 _11HMCan be increased, and be increased from the detection signal amplitude of the record mark of trench area 11.

Referring now to Figure 27 A and 27B detection signal level in " L-H " recording sheet is described.The laser beam of sending from semiconductor laser 1,121 1117 forms parallel beam by collimation lens 1122.This parallel beam light beam passes beam splitter 1123 and focuses on the pre-groove district 1111 of CD 1101 by object lens 1128.Pass object lens 1128 from these pre-groove district 1111 beam reflected and incide beam splitter 1123.Shine photodetector 1125 by beam splitter 1123 beam reflected by condenser lens 1124.Photodetector 1125 has optical detecting unit 1125-1 and the optical detecting unit 1125-2 of output detection signal I1 and I2.As in " H-L " recording sheet, by (Rs/Ds) * I _11HPDefine the light volume reflection among the Lead-In Area SYLDI of system of " L-H " recording sheet.In the present embodiment, the luminous reflectivity among the Lead-In Area SYLDI of system of " L-H " recording sheet is specified in 14% to 28% the scope.In " L-H " recording sheet, be relative little with Dl as the thickness Dg of the recording sheet 3-2 in Fig. 7 B and the pre-groove district 11 shown in the 7C and the groove bank district 12.Therefore, the detection signal level (Iot) in the not recording areas in the pre-groove district 214 when orbit ring is ON in recording areas not _GrooveThis detection signal level (Iot) less than " H-L " recording sheet _GrooveAs a result, in the present embodiment, the light volume reflection (Iot) in the pre-groove district 214 of the not record position of data importing district DTLDI, data field DTA or data leading-out zone DTLDO _GrooveRatio (Iot) _Ditch _Groove/ I _11HPBe set to be lower than this light volume reflection (Iot) of " H-L " recording sheet _GrooveRatio (Iot) _Groove/ I _11HPThereby, be included in 40% to 80% the scope.In " L-H " recording sheet, the luminous reflectivity in the record mark increases more significantly than the reflection coefficient of recording areas not, and therefore, the reproducing signal waveform shown in Figure 27 B is produced.In Figure 27 B, from the highest detection signal level I of the reproducing signal of record mark _11HMBe used as the light volume reflection, and this reflection coefficient is by (R _S/ D _S) * I _11HMSpecify.In the present embodiment, the reflection coefficient in " L-H " recording sheet is in 14% to 28% scope.According to present embodiment, in " L-H " recording sheet and " H-L " recording sheet, overlap thereby the light reflected range among the Lead-In Area SYLDI of system is designated.The lap α that has luminous reflectivity between " H-L " recording sheet in the Lead-In Area SYLDI of system and " L-H " recording sheet.In the present embodiment, the light reflected range in this district is in 16% to 28% scope.Present embodiment just is used for " H-L " recording sheet of overlapping system Lead-In Area SYLDI and the method for the reflection coefficient scope between " L-H " recording sheet, produces " H-L " recording sheet among the Lead-In Area SYLDI of system and the lap of the reflection coefficient between " L-H " recording sheet in the described Lead-In Area SYLDI of system by the light characteristic of controlling each recording layer 3-2.In addition, provide lap β when the luminous reflectivity of orbit ring when data importing district DTLDI, data DTA or data leading-out zone DTLDO are ON.At this lap, (Iot) in the not recording areas of " H-L " recording sheet _GrooveLevel is set to be higher than the detection signal level (Iot) in the not recording areas of " L-H " recording sheet _GrooveSignal level, thereby have lap β between the luminous reflectivity.

Specifically, shown in Fig. 7 B and 7C, compare in " H-L " recording sheet with at " L-H " recording sheet, thickness Dg and the Dl of recording layer 3-2 are set up bigger.As a result, the step difference Hr among the reflection layer 4-2 in " H-L " recording sheet is less than this step difference Hr in " L-H " recording sheet.As a result, the detection signal level (Iot) in the not recording areas in " H-L " recording sheet _GrooveIncrease.In the present embodiment, the luminous reflectivity scope when orbit ring is ON is consistent between " H-L " recording sheet and " L-H " film.In addition, the lap β of luminous reflectivity maximization between " H-L " recording sheet among the data field DTA etc. and " L-H " recording sheet.In addition, in the present embodiment, have part γ, at this part γ, luminous reflectivity overlaps each other between the part β that part α that the luminous reflectivity in the Lead-In Area SYLDI of system overlaps each other and the luminous reflectivity in the DTA of data field overlap each other.

In the present embodiment, shown in Fig. 7 B or 7C, the width W g in pre-groove district 11 is wider than the width W l in groove bank district 12, and from the detection signal level (Iot) such as the groove in the not recording areas of the inside of data field DTA _GrooveBe lowered, thereby increased the lap γ of the luminous reflectivity between part α and the part β.

5-2) the characteristic of the light absorption frequency spectrum relevant with in the present embodiment " L-H " recording sheet

As described in " 3-4) relate to the behavioral illustrations of " H-L " recording sheet of present embodiment ", the dependent absorption rate in the recording areas is unactual in " H-L " recording sheet is lower at one, therefore, when playback light had shone when reproducing, the light characteristic change by the absorption energy generation of playback light appearred.Light characteristic change (renewal of operation of recording) taking place even have the record mark of high-absorbility in the energy of this playback light has been absorbed after absorbing, also is lowered from the luminous reflectivity of this record mark.Therefore, because this change is the amplitude increase (I of this reproducing signal therein ₁₁≡ I _11H-I _11L) direction in work, so that reproducing signal is handled is seldom influenced.

By contrast, the light characteristic that should " L-H " recording sheet has is " luminous reflectivity of non-recorded part is lower than the luminous reflectivity in the record mark ".The absorptivity that this means non-recorded part is higher than the absorptivity in this record mark.Therefore, compare, in reproducing, the bad change of signal in " L-H " recording sheet, may occur with this " H-L " recording sheet.As described at " 3-2-B] among the present invention the total essential characteristic of organic dyestuff recording materials ", need occur owing to improve the reliability of information reproduction under the situation of the bad change of reproducing signal that ultraviolet ray or playback light irradiation cause.

As the result of the characteristic of detailed inspection organic dyestuff recording materials, have been found that a kind of mechanism that absorbs the playback light energy makes the variation of a light characteristic simulate basically in the change of a light characteristic that is caused by the ultraviolet ray irradiation.The result is, if not providing a kind of structure that improves the permanance relevant with the ultraviolet ray irradiation in the recording areas, then in reproducing the bad change of signal takes place hardly.Therefore, the characteristic of present embodiment is, in " L-H " recording sheet, and λ _{Max write}The value of the maximum absorption wavelength of recording light wavelength (near) is than recording light or reproduce light wavelength (near 405nm) and will grow.In this way, can reduce the absorptivity relevant, and can improve significantly and the relevant permanance of ultraviolet ray irradiation with ultraviolet ray.As from obvious Figure 12, at λ _{Max write}Near recording section and the difference of the absorptivity between non-recorded part be little value, and reduced in this wavelength light at λ _Max _WriteReproducing signal degree of modulation (signal amplitude) near the situation.Consider the wavelength shift of semiconductor laser light source, desirable is to the enough big reproducing signal modulation (signal amplitude) of the employing in the scope of 455nm at 355nm.Therefore in the present embodiment, design record film 3-2 and make λ _{Max write}A wavelength be present in 355nm (promptly with wavelength longer) outside the scope of 455nm than 455nm.

Figure 11 is illustrated in the example of the light absorption frequency spectrum in present embodiment " L-H " recording sheet.As described at " 5-1) about the description of " L-H " recording sheet characteristic ", in the present embodiment, non-recording section (" L " part) at " L-H " recording sheet is set to 18% at the lower limit β of luminous reflectivity, and higher limit γ is set to 32%.Find out from 1-0.32=0.68, in order to satisfy above-mentioned condition, might understand intuitively one not in the recording areas to a value Al of the absorptivity of 405nm ₄₀₅Whether will satisfy:

Al ₄₀₅≥68％ (36)

Though this reflection layer 4-2's in Figure 1A and 1B is lower slightly than 100% to the 405nm luminous reflectivity, suppose that for simplicity this coefficient is almost near 100%.Therefore, this luminous reflectivity almost is 100% when absorptivity Al=0.Whole recording sheet is to λ in Figure 11 _{Max write}Luminous reflectivity by R λ _{Max write}Specify.At this moment, suppose that this luminous reflectivity is zero (R λ _{Max write}≈ 0), then draw formula (36).Yet this coefficient is not set to " 0 " on the reality, therefore is necessary to release a formula accurately.The formula that is used for a condition of 32% that the higher limit of luminous reflectivity of the non-recording section of " L-H " recording sheet (" L " part) is set to is provided by following:

1-Al ₄₀₅×(1-Rλ _max?write)≤0.32 (37)

In traditional write-once type information storage medium,, there is not accumulation about " L-H " recording sheet information only with being somebody's turn to do " H-L " recording sheet.But, with in " 5-3) anionicsite: azo-group metal complex compound+cationic moiety: dyestuff " and " 5-4) use " copper " ", under the situation of the embodiment of description, obtaining the following the strictest condition that satisfies formula (37) after a while as azo-group metal complex compound+central metal:

Al ₄₀₅≥80％； (38)

Under the situation of using the organic dyestuff recording materials of describing in the present embodiment after a while, when the optical design of the recording sheet that produces comprises the surplus of for example characteristic variations during fabrication or comprises that this thickness of recording layer 3-2 changes, have been found that the minimal condition that satisfies this reflection coefficient of describing in " about the behavioral illustrations of " L-H " recording sheet " part is satisfied:

Al ₄₀₅≥40％ (39)

And, by satisfying any one of following formula:

Al ₃₅₅≥40％ (40)

Al ₄₅₅≥40％ (41)

Even then the wavelength of light source 355nm in the scope of 405nm or 405nm in the scope of 455nm, change, also might guarantee stable recording characteristic or reproduce feature (under the situation that two formula are satisfied simultaneously, in the scope of 455nm, changing) at 355nm.

Figure 12 is illustrated in the change according to the light absorption frequency spectrum after the record in " L-H " recording sheet of present embodiment.Think maximum absorption wavelength λ I in record mark _MaxValue from λ _{Max write}Wavelength departure, and intermolecular arrangement take place change (for example the arrangement between the azo-group metal complex compound changes).And, think that (reduction of local electronic layer (local strand decomposition) with a position is parallel λ l in described position takes place a color fading reaction _MaxAbsorptivity in the position and to the absorptivity Al of 405nm ₄₀₅All be lowered, and this light absorption frequency spectrum spreads voluntarily.

In " L-H " recording sheet according to present embodiment, by satisfying each condition of formula (20), (21), (22) and (23), same signal processor circuit can make for " L-H " recording sheet and " H-L " recording sheet, the feasible thus reduction of simplifying and making the signal processor circuit price.In formula (20), when:

I ₁₁/I _11H≡(I _11H-I _11L)/I _11H≥0.4 (42)

When being corrected,

Then obtain I _11H〉=I _11L/ 0.6 (43).

Such as previously described, in the present embodiment, the lower limit β of the luminous reflectivity of a non-recorded part of " L-H " recording sheet (" L " part) is set to 18%, and this value is corresponding to I _11LAnd conceptive this above-mentioned value corresponding to:

I_{11 H} &cong; 1 - A h_{405} \times (1 - {Rλ}_{\max write}) - - - (44) .

Therefore, establish following formula from formula (43) and (44):

1-Ah ₄₀₅×(1-Rλ _max?write)≥0.18/0.6 (45)

Relatively find Al between superincumbent formula (45) and (36) ₄₀₅And Ah ₄₀₅Look and to be set near 68% to 70% value as absorptivity.And, consider in the scope of formula (39), to obtain Al ₄₀₅Value and the situation of the stable performance of signal processor circuit, condition is obtained to be:

Ah ₄₀₅≤0.4 (47)

As possible, then expectation is satisfied;

Ah ₄₀₅≤0.3 (48)

5-3) anionicsite: azo-group metal complex compound+cationic moiety: dyestuff

Now provide for the specific descriptions with organic dye material of describing in " 5-1) about the behavioral illustrations of in an embodiment " L-H " recording sheet ", present embodiment satisfies in the condition shown in " 5-2) about the characteristic of in an embodiment " L-H " recording sheet light absorption frequency spectrum ".The thickness of recording layer 3-2 satisfies the condition shown in formula (3), (4), (27) and (28), and applies (spin coating) formation by spinner.For relatively, now provide explanation by example.By " ionic link " " salt " crystal is combined between positive charge " sodion " and the negative charge " chloride ion ".Similarly, in polymkeric substance, there is a kind of situation equally, wherein makes up a plurality of polymkeric substance mutually, form organic dye material of formation with form near " ionic link ".Organic dyestuff recording sheet 3-2 in the present embodiment comprises positive charge " cationic moiety " and negative charge " anionicsite ".Specifically, above-mentioned recording sheet is technical is characterised in that: " dyestuff " that has a color development characteristic by utilization is used for positive charge " cationic moiety " and utilizes metal-organic complex to be used for negative charge " anionicsite " and improve bonding stability; And satisfy in condition shown in " 3-2-B] in the present embodiment the total essential characteristic of organic dyestuff recording materials ", and promptly " δ] electronic structure in the color development district is stable, and appearance is shone relevant STRUCTURE DECOMPOSITION with ultraviolet ray or playback light hardly ".Specifically, in the present embodiment, its universal architecture formula shown in figure 2 one " the azo-group metal complex compound " is utilized as metal-organic complex.It comprises the combination of anionicsite and cationic moiety in the present embodiment, and cobalt or nickel improve optical stability thus as the central metal M of this azo-group metal complex compound.Wherein may use: scandium, yttrium, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, technetium, rhenium, iron, ruthenium, osmium, rhodium, iridium, palladium, platinum, copper, silver, gold, zinc, cadmium or mercury etc., do not limit and use other.

In the present embodiment, as the dyestuff that is used for cationic moiety, wherein use one of blue dyestuff of cyanines of any universal architecture formula shown in Figure 13; A kind of styryl dye; And the blue dyestuff of a kind of single methyl cyanines.

Although the azo-group metal complex compound is used to anionicsite in the present embodiment, for example can uses first hairpin metal complex, and be not limited thereto.At first make the organic dyestuff recording materials that comprise anionicsite and cationic moiety become powder.Under the situation that forms recording layer 3-2, the organic dyestuff recording materials that form powder are dissolved in the organic solvent, on transparent substrate 2-2, carry out spin coating.At this moment, the organic solvent that be used comprises: fluoroethanol base TFP (tetrafluoropropanol) or pentane; Hexane; Cyclohexane; Sherwood oil; Any or its combination in ether or analog, nitrile or analog and nitro compound or the sulfur-containing mixture.

The 6th chapter: with the description that the pre-groove shape/the pre-pit shape is relevant in spin coating type organic dyestuff recording sheet and on the reflection layer interface

6-1) reflection layer

As described at " the 0th chapter: use the relation explanation between wavelength and the present embodiment ", the scope of a 355nm to 455nm of present embodiment supposition is especially around 405nm.When in that each all has the metal material of high light reflectivity coefficient when high light reflectivity coefficient begins to arrange in order under this wavelength frequency range, the luminous reflectivity of Ag is about 96%; The luminous reflectivity of Al is about 80%; And the luminous reflectivity of Rh is about 80%.In the write-once type information storage medium that uses the organic dyestuff recording materials, shown in Figure 1B, be standard from the reflected light of reflection layer 4-2, therefore, reflection layer 4-2 needs the characteristic of high luminous reflectivity.Especially, under the situation according to " H-L " recording sheet of present embodiment, the luminous reflectivity of posting field is very not low.Therefore, especially low than very if the luminous reflectivity among the reflection layer 4-2 is very low from the reproducing signal C/N of pre-pit (burr), deficient in stability when reproducing then.Therefore, specifically, the luminous reflectivity among the reflection layer 4-2 merely is necessary for height.Therefore, in the present embodiment, in above-mentioned wavelength bandwidth, use mainly the material that constitutes by Ag (silver) with high light reflectivity coefficient.For the material of reflection layer 4-2, if use silver separately, the problem of " atom moves easily " or " occurring corrosion easily " can appear then.In order to solve first problem, when by adding other atom when carrying out the alloy part configuration, silver atoms is difficult to move.In first embodiment that adds other atom, constitute reflection layer 4-2 by AgNdCu according to first embodiment.AgNdCu is in solid dissolvable (solid soluble) state, and therefore, luminous reflectivity is than using the state of silver to reduce a little separately.In second embodiment that adds other atom, reflection layer 4-2 is made of AgPd, and the electromotive force change, therefore can corrosion occur with electrochemical means hardly.If owing to reasons such as silver-colored oxidation cause reflection layer 4-2 corrosion, then luminous reflectivity is lowered.In organic dyestuff recording sheet with the recording sheet structure shown in Figure 1B, especially, under the situation of the organic dyestuff recording sheet of in " the 3rd chapter: organic dyestuff recording sheet behavioral illustrations in the present embodiment ", describing, especially, the luminous reflectivity on the interface between recording layer 3-2 and the reflection layer 4-2 is very important.If corrosion occurs on this interface, then luminous reflectivity reduces, and the optical interface shape fogs.In addition, the detection signal performance degradation that comes from track displacement detection signal (push-pull signal) or swinging signal and pre-pit (burr) zone.In addition, the width W g in pre-groove district 11 than the wide situation of the width W l in groove bank district under, can produce track displacement detection signal (push-pull signal) or swinging signal hardly, therefore, because corrosion has strengthened the influence of the degeneration of the luminous reflectivity on the interface between recording layer 3-2 and the reflection layer 4-2.In order to prevent the degeneration of the luminous reflectivity on this interface, AgBi is used to reflection layer 4-2, as the 3rd embodiment.Because formed passive coated film on (interface between recording layer 3-2 and the reflection layer 4-2),, and prevent that the luminous reflectivity on the above-mentioned interface from degenerating so AgBi has formed highly stable phase on the surface.That is, if Bi (bismuth) is added among the Ag on a small quantity, then Bi and above-mentioned interface isolate, and segregate Bi is oxidized.Formed the extraordinary film (passive coated film) that be called bismuth oxide with prevention internal oxidation thereafter.This passive coated film is formed on this interface, and has formed highly stable phase.Therefore, the degeneration of luminous reflectivity can not occur, and can guarantee the stability from the detection signal characteristic in track displacement detection signal (push-pull signal) or swinging signal and pre-pit (burr) zone in a very long time.From the wavelength band of 355nm to 455nm, single silver has the highest luminous reflectivity in scope, and when the addition of other atom increased, luminous reflectivity reduced.Therefore, expectation is that the addition of the Bi atom in the present embodiment in AgBi is equal to or less than 5at%.The at% of unit used herein represents atomic percentage, and expression is to have 5 Bi atoms among 100 the AgBi at the total atom number for example.When making passive coated film by reality and come evaluation of properties, find, as long as the addition of Bi atom is equal to or greater than 0.5at%, just can be made into passive coated film.Based on the result of above-mentioned assessment, the addition of the Bi atom in the present embodiment among the reflection layer 4-2 is restricted to 1at%.In the 3rd embodiment, only add a Bi atom, and compare with AgNdCu, can reduce the addition of atom, and the comparable AgNdCu of AgBi improves luminous reflectivity significantly according to first embodiment (in Ag, adding under the situation of two kinds of atom Nd and Cu).The result, even under according to the situation of " H-L " recording sheet of present embodiment or shown in Fig. 7 B and 7C the width W g in pre-groove district 11 than the wide situation of the width W l in groove bank zone under, can obtain detection signal from track displacement detection signal (push-pull signal) or swinging signal and pre-pit (burr) regional stability ground with pinpoint accuracy.The 3rd embodiment is not limited to AgBi, and comprises AgMg, and the three-part system of AgNi, AgGa, AgNx, AgCo, AgAl or previous described atom can be used as the silver that allows to generate passive coated film.The thickness of this reflection layer 4-2 is set in the scope of 5nm to 200nm.If thickness is less than 5nm, then reflection layer 4-2 is inhomogeneous, and forms with groove bank shape.Therefore, the thickness of reflection layer 4-2 is set to 5nm.When the thickness of AgBi film was equal to or less than 80nm, this film permeation was to its back side.Therefore, form at single face under the situation of single-recordng-layer, thickness is set to 80nm to 200nm, and preferably, thickness range is 100nm to 150nm.Form at single face under the situation of double record layer, thickness range is 5nm to 15nm.

6-2) with application type organic dyestuff recording sheet in the reflection layer interface on the relevant explanation of pre-pit shape

In H form, be provided with the Lead-In Area SYLDI of system according to present embodiment.In this zone, be provided with convex-concave district 211, and in advance with pre-pit form recorded information.Reproducing signal in this zone is adjusted meeting the playback signal characteristic from read-only type information storage medium, and the signal processor circuit in information reproduction device shown in Fig. 8 or the information recording/reproduction device and read-only type information storage medium and write-once type information storage medium compatibility.Be adjusted with definition from this detected signal correction in zone, with meet " 3-4) relate to " definition of H-L " behavioral illustrations of recording sheet " among the present invention.That is, the reproducing signal amount from the white space with enough big length (11T) is defined as I _11H, and be defined as I from the reproducing signal amount in the pre-pit with enough big length (11T) (burr) zone _11LIn addition, the difference between this tittle is defined as I ₁₁=I _11H-I _11LIn the present embodiment, according to the reproducing signal characteristic from this read-only type information storage medium, the reproducing signal in this zone is set to:

I ₁₁/I _11H≥0.3 (54)

And, expectation be to be set to

I ₁₁/I _11H＞0.5 (55)

When the repeating signal amplitude of the white space relevant with the pre-pit with 2t length (burr) zone is defined as I ₂The time, this amplitude is set to:

I ₂/I ₁₁≥0.5 (56)

And, expectation be to be set to

I ₂/I ₁₁＞0.7 (57)

To the physical condition that meet above-mentioned formula (54) or formula (55) be described below.

Shown in Figure 1B, depend primarily on the reflectivity of reflection layer 4-2 from the characteristics of signals of pre-pit.Therefore, determine reproducing signal range value I according to the step amount Hpr between white space among the reflection layer 4-2 14 and pre-pit (burr) zone 13 ₁₁When carrying out optical approximate calculating, for playback light wavelength X and the refractive index n among the recording layer 3-2 ₃₂, this step amount has following relation:

I ₁₁∝sin ²{(2π×Hpr×n ₃₂)/λ} (58)

From formula (58), find, when

The time I ₁₁Become maximum.For coincidence formula (54) or formula (55),, must meet according to formula (58):

Hpr≥λ/(12×n ₃₂) (59)

And the expectation be,

Hpr＞λ/(6×n ₃₂) (60)

As described at " the 0th chapter: use the relation explanation between wavelength and the present embodiment ", use λ=355nm to 455nm in the present embodiment, and as " 2-1) record/recording sheet principle difference and about the difference in the key concept of the generation of reproducing signal " as described in, set up n ₃₂=1.4 to 1.9.Therefore, when this is worth substitution formula (59) or formula (60), then generate step so that eligible:

Hpr≥15.6nm (62)

And the expectation be,

Hpr＞31.1nm (63)

In traditional write-once type information storage medium, the thickness of recording layer 3-2 is very little in white space 14, and therefore, the step on the interface between reflection layer 4-2 and the recording layer 3-2 is very little, and formula (62) is not successfully satisfied.On the contrary, in the present embodiment, carry out such invention, that is, guarantee that relation between the thickness Dl of the thickness Dg of the recording layer 3-2 in pre-pit (burr) zone 13 and the recording layer 3-2 in the white space 14 meets the condition described in " 3-2-E] in the essential characteristic at the thickness distribution that relates to recording layer in the present embodiment of parameter-definition ".As a result, the enough big step Hpr of coincidence formula (62) or formula (63) is successfully provided.

By carrying out aforesaid optical approximate discussion, in the present embodiment, for enough resolution with reproducing signal so that coincidence formula (56) or formula (57), carry out an invention, promptly, the width W g in pre-pit (burr) zone 13 is equal to or less than half of track space, and can obtain the reproducing signal from pre-pit (burr) zone 13 in a large number.

The 7th chapter: the explanation of H form

Now, will H form in the present embodiment be described at this.

Figure 14 shows the structure and the size of the information storage medium in the present embodiment.For embodiment, accurately show three kinds of embodiment of information storage medium, such as:

Be exclusively used in " the read-only type information storage medium " of reproduction, can not carry out record:

" write-once type information storage medium " that can addition record; And

Can inferior arbitrarily " but rewriting type information storage medium " that rewrites or write down

As shown in figure 14, described three kinds of information storage mediums are interchangeable on most of structures and size.In whole three kinds of information storage mediums, be arranged with burning district BCA, the Lead-In Area SYLDI of system, bonding pad CNA, data importing district DTLDI and data field DTA from inner circumferential side.Whole media except that OPT type read-only medium are characterised in that data leading-out zone DTLDO is arranged in excircle.As described later, in OPT type read-only medium, mesozone MDA is arranged in excircle.But in any in write-once type and rewriting type medium, the inboard in this zone is used for read-only (the additional forbidding that writes).In read-only type information storage medium, with form recorded information in data importing district DTLDI of burr (pre-pit).On the contrary, but in write-once type and rewriting type medium,, can additionally write (but being to rewrite) information in rewriting type by in data importing district DTLDI, being additionally formed record mark.As hereinafter described, but in write-once type and rewriting type information storage medium, in data leading-out zone DTLDO, can add the zone that writes (but being to rewrite) in rewriting type and coexist with the read-only region of the form recorded information of burr (pre-pit).As previously mentioned, in data field DTA shown in Figure 14, data importing district DTLDI, data leading-out zone DTLDO and mesozone MDA, be used to reproduce wherein PRML (PRML) method of the signal of record by use, can realize high-density information storage media (especially, improving line density).In addition, in Lead-In Area SYLDI of system and the leading-out zone SYLDO of system, be used to reproduce the wherein clipping lever detection system of the signal of record, realize the stability of reproducing with compatibility and the improvement of current DVD by use.

Be different from current DVD standard, in the embodiment shown in fig. 14, be separated from each other on burning district BCA and the system Lead-In Area SYLDI position, and can not overlap each other.These zones physically are separated from each other, thus can prevent from when information regeneration, to be recorded among the Lead-In Area SYLDI of system information be recorded in burning district BCA in information mutual interference mutually, and can reproduce with the pinpoint accuracy assignment information.

Internal signal characteristic and the data structure of burning district BCA shown in Figure 14 will be described now.When measuring the BCA signal, the focus of the laser beam of sending from shaven head need be focused on the recording layer.The reproducing signal that obtains among the burning district BCA below is the second level low pass container wave filter of 550kHz and filtered by cutoff frequency.At center from information storage medium, radius 22.4mm in the 23.0mm scope, defined burning district BCA below characteristics of signals.With regard to the reproducing signal from burning BCA, the minimum and maximum level when bca code and raceway groove position are set as " 0 " is defined as I _BHmaxAnd I _BHminAnd the maximum end level of bca code and raceway groove position " 1 " is defined as I _BLmaxIn addition, intermediate level is defined as (I _BHmin+ I _BLmax)/2.

In the present embodiment, at (I _BLmax/ I _BHmin) be 0.8 or littler condition under and at (I _BHmax/ I _BHmin) be 1.4 or littler condition under, defined the detection signal characteristic.Though I _BLAnd I _BHBetween average level be defined as benchmark, but think that the position that BCA signal and reference position intersect is the position, edge.When rotational speed was set as 2760rpm (46.0Hz), the cycle of BCA signal was defined.The cycle is 4.63 * n ± 1.00 μ s between the beginning edge (down position), and light quantity is that the pulse position width of low (interval from first down position to next down position) position is defined as 1.56 ± 0.75 μ s.

After the information storage medium manufacturing is terminated, understand recording BCA code usually.Yet this bca code can be registered as pre-pit in advance.This bca code is recorded along this information storage medium circumferencial direction.It is consistent with the direction that light reflectivity is lowered that thereby this bca code also is recorded the direction that makes pulse width narrow down.Modulating the laggard line item of this bca code according to the RZ modulator approach.Pulse with narrow pulse width (equaling to have antiradar reflectivity) need be narrower than half of raceway groove clock width of the bca code of such modulation.

Figure 28 shows the BCA data structure.The BCA data comprise two BCA preambles 73 and 74, two postambles 76 and 77 and two BCA data field BCAA.BCA error-detecging code EDC _BCAWith BCA error correcting code ECC _BCABe added to each among the BCAA of BCA data field, distributed BCA bonding pad 75 between two districts.In addition, the sync byte SB of each byte _BCAOr synchronous again RS _BCABe inserted into based on per four bytes.In the above-mentioned BCA preamble 73 and 74 each comprises 4 bytes, and all settings " 00h " are recorded.In addition, sync byte SB _BCAAnd then be dispensed on before each BCA preamble 73 and 74.At BCA data field BCAA, be provided with 76 bytes.In this BCA postamble 76 and 77 each comprises 4 bytes, and the repeat pattern of all settings " 55h " is recorded.This BCA bonding pad 75 comprises 4 bytes, and all settings " AAh " are repeated record.Figure 29 A each in the 29G shown the example of the BCA information content that writes down among the BCAA of this BCA data field.BCA data field BCAA can write down 76 byte information, and is records data in units with BCA record cell BCAU.The information that is recorded among this BCA record cell BCAU is called the BCA record.The size of each BCA record is the integral multiple of nybble.Shown in Figure 29 C, in each BCA record, journal: the BCA Record ID of forming by 2 bytes 61; The version number information of forming by 1 byte 62; The data length information 63 of the record data of forming by 1 byte; Data recording (record data 64) with the 4m byte.Using method according to public acceptance is assigned as the ID that is made as BCA Record ID 61 from 0000h to 7FFFFh, and according to individual using method this ID is assigned as from 8000h to FFFFh.The version number information of being made up of 1 byte 62 is divided into effective 4 master numbers 71 and minimum effective 4 son numbers 72.First integer number of version number is recorded in main number 71, and the first digit behind version number's radix point is recorded in sub number 72.For example, under version number " 2.4 " situation, numeral " 2 " is recorded in main number 71 fields, and numeral " 4 " is recorded in son number 72 fields.

In the H form according to present embodiment, record HD_DVD type identifying information 80 in the BCA record is shown in Figure 29 E.Especially, for this information content, shown in Figure 29 F, write down: BCA Record ID 81, version number information 82 and record data length information 83.In addition, also write down: by 4 type information of forming 84; By 4 information about disk type of forming 85; Expansion version information 86 (1 byte); With reserved area 87 (2 byte).Record mark polarity (identification of " H-L " or " L-H ") information 88 is dispensed in the information about disk type 85 in first effective 1, is assigned to reserved area 89 and remain 3.

Following structure can be provided as Figure 29 A another example to the data structure shown in the 29G.That is, the BCA that is recorded among the BCA record cell BCAU#1 shown in Figure 29 B writes down the item that (8 bytes) can comprise following information with following order:

1) as " the BCA Record ID " of 2 bytes of HD DVD book type identifier;

2) 1 byte " version number " of indication version number;

3) 1 byte " data length " of designation data length

4) " the book type and the disc-type " of 1 byte of order book type and disc-type;

5) " the part version of expansion " of 1 byte of the part version of indication expansion;

6) 2 bytes of Bao Liuing.

Here, be included in " disc-type " in above " book type and disc-type " thus be configured " mark polarity " and " twin format denotation " can be described." mark polarity " described in this " disc-type " is provided as the information corresponding to previously described " record mark polarity information 88 ".When " mark polarity=0b ", its representation feature is " low to high dish " of " from the signal of mark greater than from signal at interval ", when " mark polarity=1b ", its representation feature is " high to main frame " of " from the signal of mark less than from signal at interval ".

On the other hand, " the twin format denotation " described in " disc-type " is provided as whether this dish of indication is the information of twin form dish." twin format denotation=0b " indicates this dish is not twin form dish, and " twin format denotation=1b " indicates this dish is twin form dish.Depending on and used the recoding/reproduction layer, is to be characterised in that this dish has the dish of two recoding/reproduction layers of different-format (other form that defines) in DVD forum in " the twin form dish " of this description.This " twin format denotation " is provided as the BCA record, thereby in each multi-layer H DDVD-R (can write down high-resolution DVD) dish, can easily distinguish this dish is single form dish or multi-format dish.

As shown in figure 28, be included in the BCA data field BCAA that surrounds by BCA preamble 73 and BCA postamble 76 in the identical information of those information be described among the BCA data field BCAA that surrounds by BCA preamble 74 and BCA postamble 77.Like this, identical information is write among a plurality of BCA data field BCAA by multichannel.Therefore, even data item is owing to be formed on the lip-deep dust of information storage medium or abrasive influence and can not be reproduced the time, also can reproduce data from other BCA data field BCAA.Therefore, the reliability that is recorded in the data among the BCAA of BCA data field is improved significantly.

In addition, in the BCA data structure shown in Figure 28, except the BCA error-detecging code EDC that exists traditionally _BCAIn addition, also there is BCA error correcting code ECC _BCATherefore, even the data that are included among the BCAA of BCA data field produce mistake, such mistake also can be by BCA error correcting code ECC _BCACorrect, and reliability is further improved.

Be used as under the situation of another embodiment at " L-H " type recording sheet, existed in the method that is pre-formed accurate scrambling in the position of having distributed burning district BCA.

As described later, present embodiment has also been considered the situation of use " L-H " recording sheet.By recording sheet is carried out laser radiation partly, form the data of record among the burning district BCA (barcode data).Form the Lead-In Area SYLDI of system by convex-concave zone, therefore, from the reproducing signal of the Lead-In Area SYLDI of system along with compare the direction that the light volume reflection reduces from the light reflection rank of minute surface and occur.If burning district BCA is formed minute surface, then using under the situation of " L-H " recording sheet, occurring with the direction of comparing the light volume reflection from the light reflection rank of minute surface and increasing along (under recording status not) from the reproducing signal that is recorded in the data among the burning district BCA.As a result, significant step appears between the position (amplitude leyel) of the maximum level of the reproducing signal that is recorded in the data among the burning district BCA and minimum levels and the position (amplitude leyel) from the maximum level of the reproducing signal of the Lead-In Area SYLDI of system and minimum levels.Information reproduction device or information recording/reproduction device are handled according to following steps:

1) information among the reproduction burning district BCA;

2) reproduce information among the information data band CDZ be included among the Lead-In Area SYLDI of system;

3) reproduce the information (but under situation of write-once type or rewriting type) that is included among the data importing district DTLDI;

4) the reproducing circuit constant among readjust (optimization) the reference number recording strip RCZ; And

5) reproduce information or the record fresh information that is recorded among the DTA of data field.

Therefore, if having big step from being formed between reproducing signal amplitude leyel among the burning district BCA and the reproducing signal amplitude leyel from the Lead-In Area SYLDI of system, the problem that the reliability of information regeneration reduces can appear then.In order to address this problem, be used as under the situation of recording sheet at " L-H " recording sheet, present embodiment is characterised in that, has been pre-formed accurate scrambling in such burning district BCA.When this accurate scrambling forms, coming record data (barcode data) before by local laser radiation, because causing the light reflection level to become, the effect of the interference of light is lower than light reflection level from minute surface., realize such beneficial effect thereafter, that is, from be formed among the burning district BCA reproducing signal amplitude leyel (detection level) and from the reproducing signal amplitude leyel (detection level) of the Lead-In Area SYLDI of system between step significantly reduce; The reliability of information regeneration is enhanced; And promoted processing from above-mentioned (1) to (2).

Under the situation of using " L-H " recording sheet, the particular content that is pre-formed the accurate scrambling in burning district BCA comprises the convex-concave zone 211 that is similar to the Lead-In Area SYLDI of system.Another embodiment comprises the method that is used to form the trench region 214 that is similar to data importing district DTLDI or data field DTA or groove bank zone and trench region 213.As in the description of the embodiment that the Lead-In Area SYSDI of system and burning district BCA are separated to arrange, if burning district BCA and convex-concave zone 211 overlap each other, then can be owing to unnecessary interference causes increasing from the noise component that is arranged on the data among the burning district BCA to reproducing signal.

Do not form as the convex-concave of the embodiment of the accurate scrambling of burning district BCA regional 211 the time when forming trench region 214 or groove bank zone and trench region 213, realized such beneficial effect, promptly, because unnecessary interference causes reducing from the noise component that is formed at the data among the burning district BCA to reproducing signal, and reproduced signal quality improves.

The track space of the trench region 214 in being formed at burning district BCA or groove bank zone and trench region 213 is adjusted, during with the track space of compliance with system Lead-In Area SYLDI, realized such beneficial effect, that is, the manufacturing property of information storage medium is enhanced.That is, when the original stamper of manufacturing information storage medium, the convex-concave in the feeder electrode constant airspeed in the manufacturing system Lead-In Area.At this moment, the trench region 214 or the groove bank track space regional and trench region 213 that are formed among the burning district BCA are adjusted, with the track space of compliance with system Lead-In Area SYLDI, thereby can in burning district BCA neutralized system Lead-In Area SYLDI, keep constant motor speed continuously.Therefore, do not need to change the middle speed of feeding motor, therefore, it is inhomogeneous spacing to occur hardly, and the manufacturing property of information storage medium is enhanced.

By track space and line density (data bit length) are narrowed down, but the rewriting type information storage medium has higher recording capacity than read-only type or write-once type information storage medium.As described later, but in the rewriting type information storage medium, write down the cross talk effects that reduces adjacent orbit by adopting groove bank-groove, thereby make track space narrow down.Optionally, but any in read-only type information storage medium, write-once type information storage medium and the rewriting type information storage medium is characterised in that the data bit length of the leading-out zone SYLDO of Lead-In Area SYLDI/ system of system and track space (corresponding to recording density) are greater than data bit length and the track space of (recording density is lower) data importing district DTLDI/ data leading-out zone DTLDO.

The data bit length of the leading-out zone SYLDO of Lead-In Area SYLDI/ system of system and track space be near the value of current DVD Lead-In Area, thereby realized the compatibility with current DVD.

In being similar to the present embodiment of current DVD-R, the burr step among the leading-out zone SYLDO of Lead-In Area SYLDI/ system of system of write-once type information storage medium is defined as more shallow.Like this, realized such beneficial effect, that is, the degree of depth of the pre-groove of write-once type information storage medium is defined as more shallow, and from improving by the additional modulation levels that writes the reproducing signal that is formed on the record mark on the pre-groove.On the contrary,, such problem occurred, that is, reduced from the modulation levels of the reproducing signal of the leading-out zone SYLDO of Lead-In Area SYLDI/ system of system as retroaction.In order to address this problem, the data bit length (and track space) of the leading-out zone SYLDO of Lead-In Area SYLDI/ system of system becomes coarse, and the pit of narrow position and repetition frequency are at interval closed frequency isolated (from its remarkable decline) from the optics of the MTF (modulation transfer function) that reproduces object lens, thereby can increase reproducing signal amplitude, and can make reproduction stable from the leading-out zone SYLDO of Lead-In Area SYLDI/ system of system.

As shown in Figure 15 A to Figure 15 D, initial strip INZ represents the starting position of the Lead-In Area SYLDI of system.For the significant information that is recorded among the initial strip INZ, be arranged with discretely and comprise in advance the physical sector number described and data ID (recognition data) information of logic sector number information.As described later, physical sector has write down master data and EDC (error-detecging code) information by data ID, IED (ID error-detecging code), recording user information; And initial strip has write down the information of above-mentioned data frame structure.Yet in initial strip INZ, the master data of recording user information all is set to " 00h ", and therefore, the meaningful information that is included among the initial strip INZ only is a data ID information.Can be from being recorded in physical sector number or logic sector number identification current location wherein.Promptly, when information recording/regenerating unit 141 shown in Figure 8 begins when information storage medium carries out information regeneration, under the situation that information from be included in initial strip INZ begins to reproduce, at first, the physical sector number or the logic sector number information that are recorded in the data ID information are sampled, and the information of being sampled in the current location in the fox message storage medium is moved to control data band CDZ.

Each constitutes buffer strip 1BFZ1 and buffer strip 2BFZ2 by 32 ECC pieces.An ECC piece is corresponding to 1024 physical sectors.In being similar to the buffer strip 1BFZ1 and buffer strip 2BFZ2 that is transferred to INZ, master data information all is set to " 00h ".

Be present in connecting band CNZ among the CNA (bonding pad) and be and be used to zone that Lead-In Area SYLDI of system and data importing district DTLDI physically are separated from each other.This zone is set to not exist on it minute surface of convex-concave or pre-groove.

Each is to be used for reproducer is carried out the tuning zone of reproducing circuit for RCZ in read-only type information storage medium and the write-once type information storage medium (reference number band), wherein, and the data frame structure information of having described before having write down.Reference number length is an ECC piece (=32 sector).Present embodiment is characterised in that each is close to DTA (data field) arrangement the RCZ in read-only type information storage medium and the write-once type information storage medium (reference number band).In any of structure that current DVD-ROM dish and current DVD-R coil, the control data band is arranged between reference number band and the data field, and reference number band and data field are separated from each other.If reference number band and data field are separated from each other, then the tilt quantity of (under the situation of write-once type information storage medium) information storage medium or the record susceptibility of luminous reflectivity or recording sheet change a little.Therefore, such problem occurred, that is, even the circuit constant of reproducer is adjusted, the optimal circuit constant in the data field also can distortion.In order to address the above problem, when the contiguous DTA of RCZ (reference number band) (data field) arranges, in RCZ (reference number band) the optimized situation of circuit constant of information reproduction device under, keep optimum condition with the same circuit constant among the DTA (data field).Under the situation of the signal in the optional position of attempting accurately reproducing among the DTA (data field), can very accurately reproduce the signal of target location according to following steps, described step is:

1) the circuit constant optimization of the information reproduction device among the RCZ (reference number band);

2) when reproducing near the part of the reference number band RCZ among the DTA of data field once more the circuit constant optimization of information reproduction device;

3) to target location and step 2 among the DTA of data field) in when information on the centre position between the optimized position reproduces, optimized circuit constant again; And

4) reproducing signal after moving to the target location.

But the GTZ1 and the GTZ2 (protection track ribbon 1 and 2) that are present in write-once type information storage medium and the rewriting type information storage medium are the zones that is used for the initial boundary position of specified data Lead-In Area DTLDI and drives the boundary position of calibration tape DRTZ and looping test band DKTZ.Forbid these regional record record marks.Protection track ribbon 1GTZ1 and protection track ribbon 2GTZ2 are present among the data importing district DTLDI, and therefore, in this zone, the write-once type information storage medium is characterised in that, is pre-formed the pre-groove district.Optionally, but the rewriting type information storage medium be characterised in that, be pre-formed trench region and groove bank zone.In pre-groove district or trench area and groove bank district, write down swinging address in advance, therefore, determine current location in the information storage medium by using these swinging address.

Looping test band DKTZ is that the manufacturer for information storage medium carries out the zone that quality test (assessment) is provided with.

Driving calibration tape DRTZ is arranged in use in information recording/reproduction device and tests the zone that writes before the recorded information in information storage medium.Information recording/reproduction device is tested in this zone in advance and is write, and identification best titime condition (write-in policy).Can under best titime condition write down the information that is included in data field DTA thereafter.

But the information that is recorded among the disc identifier band DIZ that is present in the rewriting type information storage medium is the optional information recording areas, promptly, by the zone that is used for writing in addition one group of driving description that following information constitutes, described information is: the information of manufacturer's title of recording/reproducing apparatus; Relevant additional information; And by the unique district that writes down of manufacturer.

But the defect management 1DMA1 and the defect management 2DMA2 that are present in the rewriting type information storage medium have write down the defect management information that is included among the DTA of data field, and, for example, the alternative site information when defective etc. appears in record.

In the write-once type information storage medium, unique existence: RMD dubs RDZ; Record management band RMZ; With R physical message band R-PFIZ.Record management band RMZ has write down RMD (record management data), its for by additional write data come the relevant management information of the record position of data updated.To provide detailed description below.As described in Figure 15 A, 15B, 15C and the 15D, in the present embodiment, record management band RMZ is set after a while, makes the area extension of record management band RMZ at each frontier district BRDA.As a result,, also can handle this increase, therefore, realize adding the beneficial effect that the amount of writing can significantly increase by extension record management band RMZ continuously even required record management data RMD is owing to the additional frequency that writes increases.In the case, in the present embodiment, record management band RMZ is arranged in (purple is arranged before leaning against each frontier district BRDA) among border-Nei BRDI corresponding to each frontier district BRDA.In the present embodiment, compatible each other corresponding to the border-Nei BRDI of the first frontier district BRDA#1 and data importing district DTLDI, and cancelled in the DTA of data field, form first border-Nei in the BRDI, promoted effective use of data field DTA.That is, the record management band RMZ among the data importing district DTA is used as the record position with the corresponding record management data RDM of the first frontier district BRDA#1.

As described in the above embodiment, RMD dubs RDZ is the position that is used for the information of record management data RMD, following condition among the described information conforms record management band RMZ, and can improve the reliability of record management data RMD by record management data RMD is provided with copy mode.That is, owing to have dust or cut to cause being included under the effective situation of record management data RMD among the record management band RMZ on the write-once type information storage medium surface, record management data RMD is reproduced, and these data are recorded among this RMD dubs RDZ.And, obtain remaining information needed by tracking, thereby can recover the information of last record management data RMD.

This RMD dubs has write down the record management data RDM when closing (a plurality of) border.As described below, when having closed a border and next new frontier district is set, just define new record management band RMZ.Therefore, when having created new record management band RMZ, can with preceding frontier district relevant on a record management data RMD be recorded among this RMD dubs RDZ.When record management data RMD additionally being recorded in the write-once type information storage medium, in this RMD dubs RDZ, writing down same information at every turn, it is full that RMD dubs RDZ just becomes when smaller addition record amount, therefore, the higher limit of the additional amount of writing diminishes.On the contrary, in the present embodiment, when closing a border, regenerate under the situation of a record management band, it is full that record management band among border-Nei BRDI becomes, and, realized such beneficial effect, promptly by using the R band to form new record management band RMZ, only in RMD dubs RDZ record be included among in the past the record management band RMZ on a record management data RMD, thereby can improve the amount of writing of adding by effective uses RMD dubs RDZ.

For example, since write-once type information storage medium film on dust and cut, cause reproducing be included in the frontier district BRDA of (before closing) is corresponding in additional ablation process record management band RMZ in the situation of record management data RMD under, can discern the position of pent frontier district BRDA by reading the record management data RMD that is lastly recorded among this RMD dubs RDZ.Therefore, by among the data field DTA of tracked information storage medium the another location, can obtain the position of the frontier district BRDA of (before closing) in additional ablation process and be recorded in the content of information wherein, and can recover the information of last record management data RMD.

R physical message band R-PFIZ has write down the information (following detailed description) that is included in the physical format PFI among the control data band CDZ that is similar to.

Figure 15 C shows the RMD dubs RDZ that is present in the write-once type information storage medium and the data structure among the record management band RMZ.Figure 15 B shows the synoptic diagram of the amplification of RMD dubs RDZ and record management band RMZ.As mentioned above, among the record management band RMZ in being included in data importing district DTLDI, with corresponding to the relevant data of the record management of the first frontier district BRDA by co-registered respectively in of record management data (RMD); And, just write overleaf new record management data RMD is sequentially additional whenever in the write-once type information storage medium, adding the content that writes the record management data RMD that produces when handling when being updated.That is, be bodge record RMD (record management data) with single one physical section piece (following will describe the physical segment piece), and when upgrading data content, just sequentially additionally write new record management data RMD.In the example shown in Figure 15 B, along with record management data RMD#1 and RMD#2 are recorded, changing will appear in the management data in the position.Therefore, the figure shows such example, wherein, the data of (after the renewal) have been registered as the record management data RMD#3 that is right after after record management data RMD#2 after the change.Therefore, in record management band RMD, there is reserve area 273, further added writing.

Although Figure 15 B shows the structure that has occurred record management band RMZ among the data importing district DTLDI, but it is also identical with the structure shown in Figure 15 B to be present in border-Nei BRDI or the structure among the record management band RMZ among the BRDA of frontier district (perhaps the extension record management is with: be known as expansion RMZ) described after a while, but is not limited thereto.

In the present embodiment, under the pent situation of the first frontier district BRDA#1, or data field DTA is carried out under the situation of termination, use the processing operation of the whole reserved areas 273 shown in the state-of-the-art record management data RMD dubs blank map 15B.Like this, just obtained following beneficial effect:

1) " Unrecorded " reserved area 273 is eliminated, and has guaranteed because the stability that the tracking of DPD (differential phase detection) technology is proofreaied and correct;

2) override up-to-date record management data RMD in the reserved area 273 in the past, thus the reliability when significantly improving the reproduction relevant with up-to-date record management data RMD; And

3) different item that can prevent record management data RMD is recorded in the incident in the Unrecorded reserved area 273 by mistake.

Above-mentioned disposal route is not limited to be included in the record management band RMZ among the data importing district DTLDI.In the present embodiment, with regard to being present in the border-Nei BRDI or the record management band RMZ among the BRDA of frontier district (perhaps the extension record management is with: be known as expansion RMZ) that describes after a while, under the pent situation of the frontier district of correspondence BRDA, perhaps data field DTA is being carried out under the situation of termination (finishing), using the processing operation of the whole reserved areas 273 shown in the state-of-the-art record management data RMD blank map 15B.

RMD dubs RDZ is divided into the recording areas 271 of RDZ Lead-In Area RDZLI and the last record management data RMD dubs RDZ of the RMZ of correspondence.RDZ Lead-In Area RDZLI is that the reserved field SRSF of system of 48KB and unique id field UIDF that size of data is 16KB constitute by size of data, shown in Figure 15 B.In the reserved field SRSF of system, all be set to " 00h ".

Present embodiment is characterised in that RDZ Lead-In Area RDZLI is recorded in can be by among the additional data importing district DTLDI that writes.In write-once type information storage medium according to present embodiment, be right after after making, be at RDZ Lead-In Area RDZLI under the situation of recording status not this medium delivery.In user's information recording/reproduction device, in the stage of using this write-once type information storage medium, record RDZ Lead-In Area RDZLI information.Therefore, judge whether to be right after after the write-once type information storage medium being installed in the information recording/reproduction device just recorded information in RDZ Lead-In Area RDZLI, thereby can know easily that target write-once type information storage medium is in the state that is right after after manufacturing/delivery or was used once at least.And to shown in the 15D, second of present embodiment is characterised in that as Figure 15 A, in the inner circumferential side corresponding to the record management band RMZ of the first frontier district BRDA RMD dubs RDZ is set, and RDZ Lead-In Area RDZLI is arranged among the RMD dubs RDZ.

By the service efficiency of coming improvement information to obtain at the RMD dubs RDZ arrangement information (RDZ Lead-In Area RDZLI) that is used for shared (improving the reliability of RMD), described information (RDZ Lead-In Area RDZLI) expression write-once type information storage medium is in the state that is right after after manufacturing/delivery or was used once at least.In addition, RDZ Lead-In Area RDZLI is arranged in the inner circumferential side of record management band RMZ, thereby can reduce the time of obtaining information needed.When information storage medium is installed in the information recording/reproduction device, information recording/reproduction device begins to reproduce from the burning district BCA that is arranged in inner circumferential side, as shown in figure 14, when sequence of positions ground moves to inner circumferential side a reproduction position is sequentially changed to data importing district DTLDI from the Lead-In Area SYLDI of system reproducing.Judge whether information has been recorded among the RDZ Lead-In Area RDZLI that is included among the RMD dubs RDZ.In not being right after the write-once type information storage medium that after delivery, writes down, in record management band RMZ, do not write down record management data RMD.Therefore, in RDZ Lead-In Area RDZLI, not under the situation of recorded information, determine that medium is " the delivery back is untapped ", and can cancel the reproduction of this record management band RMD, and can reduce the time of obtaining information needed.

Shown in Figure 15 C, the information that unique ID district UIDF record is relevant with information recording/reproduction device is at the use for the first time after delivery of write-once type information storage medium (that is, the first time opening entry).That is, this regional record the drive manufacturers ID 281 of information recording/reproduction device or the sequence number 283 and the model 285 of information recording/reproduction device.The identical information of 2KB (2048 bytes strictly) shown in this unique ID district UIDF duplicate record Figure 15 C.When for the first time using storage medium (opening entry) for the first time, the information among unique dish ID 287 of being included in write down year information 293, month information 294, day information 295, the time information 296, branch information 297 and second information 298.Shown in Figure 15 D, describe the data type of every information with HEX, BIN, ASCII, and use two bytes or four bytes.

Present embodiment is characterised in that the area size of RDZ Lead-In Area RDZLI and the size of a record management data RMD are 64KB, that is, the user data size in ECC piece becomes integral multiple.In the write-once type information storage medium, can not in information storage medium, change the processing operation that a part of data that comprise in the ECC piece rewrite the ECC blocks of data afterwards.Therefore, especially under the situation of write-once type information storage medium, as described later, record data in the record bunch unit that the integer multiple data section that comprises an ECC piece constitutes.Therefore, the such item size of the area size of RDZ Lead-In Area RDZLI and record management data RMD and the user data in the ECC piece vary in size, need be to the fill area adjusted, record bunch unit, and actual record efficiency is lowered.For present embodiment, such item size of the area size of RDZ Lead-In Area RDZLI and record management data RMD is set to the integral multiple of 64KB, thereby can reduce record efficiency.

To the last record management data RMD recording areas 271 of the RMZ of the correspondence shown in Figure 15 B be described below.Described in Jap.P. 2621459, a kind of method that is used for record interrupting information when interrupting the record of Lead-In Area inside is arranged.In the case, when interruption logging or whenever carrying out other writing when handling, must in this zone, add writing interrupting information (being record management data RMD in the present embodiment) continuously.Therefore, if this record interrupts or additionally write processing and frequently repeated, then exist this zone to become full at once and further add the problem that to carry out of handling.In order to address this problem, present embodiment is characterised in that, the zone that RMD dubs RDZ is set to write down the record management data RMD that is updated, described record management data RMD only is updated when specified conditions are satisfied and are recorded in the record management data RMD of this specified conditions down-sampling.Therefore, realized such beneficial effect, that is, and by being reduced in the frequency of the additional record management data RMD that writes of record among the RMD dubs RDZ, can prevent that RMD dubs RDZ from becoming full, and can significantly improve the additional of write-once type information storage medium and can write indegree.With this effect while, write the record management data of upgrading when handling and be written to (, being in the data importing district DTLDI shown in Figure 15 A) among the record management band RMZ among the border shown in Figure 15 A-inner region BRDI continuously with adding or utilize among the record management band RMZ that following R is with whenever adding for the first frontier district #1.When creating new record management band RMZ, for example, when creating next frontier district BRDA (new border-inner region BRDI is set) or when in the R band new record management band RMZ being set, a last record management data RMD (the up-to-date RMD under the state before creating new record management band RMZ) is recorded in (the corresponding last record management data RMD recording areas 271) that is included among the RMD dubs RDZ.Like this, just realized such beneficial effect, that is, handled significantly to increase and be used for outside the additional amount of writing of write-once type information storage medium, helped retrieval up-to-date RMD position by utilizing this zone.

But in any in read-only type, write-once type and rewriting type information storage medium, present embodiment is characterised in that, when the data importing district is clipped between two districts, system's Lead-In Area is arranged in the opposite side of data field, and, as shown in figure 14, burning district BCA and data importing district DTLDI are arranged in opposite sides to each other, and simultaneity factor Lead-In Area SYSDI is clipped between two districts.When information storage medium was inserted in information reproduction device shown in Figure 8 or the information recording/reproduction device, information reproduction device or information recording/reproduction device were handled according to following steps:

1) reproduces the information that is included among the burning district BCA;

2) reproduce the information that is included among the information data band CDZ that is comprised among the Lead-In Area SYLDI of system;

3) reproduce the information (but under situation of write-once type or rewriting type medium) that is included among the data importing district DTLDI;

4) the circuit constant among readjust (optimization) the reference number band RCZ; And

5) reproduce the information that is recorded among the DTA of data field, or the record fresh information.

, therefore, cancelled and be used for processing that unnecessary inner periphery is conducted interviews from the inner circumferential side information of sequential arrangement according to above-mentioned treatment step, reduced access times, and addressable data field DTA.Therefore, realized such beneficial effect, that is, reproduced the information be recorded in the data field or the zero-time of record fresh information and accelerated.In addition, be used for carrying out the clipping lever detection system of signal reproduction, use PRML in data importing district DTDLI and data field DTA, to carry out signal reproduction at the Lead-In Area SYLDI of system by utilization.Therefore, if data importing district DTDLI and data field DTA are located adjacent one another, then under situation about reproducing from the inner circumferential side order, between Lead-In Area SYLDI of system and data importing district DTLDI, only by once slice level detection circuit being switched to the PRML detector circuit, but continous-stable reproducing signal just.Therefore, the number of times that carries out the reproducing circuit switching according to the reproduction step is very little, thereby simplifies processing controls, and accelerates reproducing the start time in the data field.

In read-only information storage medium, be recorded in data leading-out zone DTLDO and each data among the leading-out zone SYLDO of system all have with buffer strip 1BFZ1 and buffer strip 2BFZ2 in the identical structure of structure, and the whole values that are included in master data wherein are set to " 00h ".In read-only type information storage medium, user data prerecorded zone 201 can be used in the DTA of data field fully.Yet, as described later, but in any of write-once type information storage medium and rewriting type information storage medium embodiment, but the user rewrite/additional writing range 202 to 205 is narrower than data field DTA.

But in write-once type information storage medium and rewriting type information storage medium, SPA (spare area) is set on the outermost circumference of data field DTA.In the DTA of data field, rewrite under the situation of defective, carry out alternate process by using spare area SPA.But under the situation of rewriting type information storage medium, substitute historical information (defect management information) and be recorded in defect management 1 (DMA1) and the defect management 2 (DMA2); In defect management 3 (DMA3) and defect management 4 (DMA4).The content that is recorded in the defect management information in defect management 3 (DMA3) and the defect management 4 (DMA4) be recorded in defect management 1 (DMA1) and defect management 2 (DMA2) in defect management information in content identical.Under the situation of write-once type information storage medium, alternative historical information (defect management information) under the situation that alternate process has been performed is recorded among the data importing district DTLDI and is present among the Copy Info C_RMZ of the content that writes down in the record management band in the boundary strip.Although in current DVD-R dish, do not carry out defect management, but, when the manufacture of DVD-R dish improves, may buy the DVD-R dish that part has defective locations, and more and more higher needs be arranged for the reliability that improvement is recorded in the information in the write-once type information storage medium.

Driving calibration tape DRTZ is arranged as and is used for testing the zone that writes at information recording/reproduction device before the information storage medium recorded information.Information recording/reproduction device is tested in advance in this zone and is write, and identification best titime condition (write-in policy).Thereafter, this equipment can under the best titime condition in the DTA of data field recorded information.

Looping test band DKTZ provides the zone of carrying out quality test (assessment) to the manufacturer of information storage medium.

In the write-once type information storage medium, be provided with two in the inner circumferential side of this medium and outer circumferential sides and drive calibration tape DRTZ.When driving calibration tape DRTZ and more test write operation, allocation of parameters accurately, thus can at length retrieve the best titime condition, and can improve the record degree of accuracy among the DTA of data field.But the rewriting type information storage medium allows to reuse this driving calibration tape DRTZ by overriding.Yet, if attempt testing the number of times that writes in the write-once type information storage medium and improving the record degree of accuracy by being increased in, the problem that calibration tape is used up at once can appear driving.In order to address this problem, present embodiment is characterised in that, can EDRTZ (external drive calibration tape) be set from the inside circumferencial direction of excircle, thereby can the external drive calibration tape.

In the present embodiment, it is as described below to test the relevant feature of the method that writes with the method that the external drive calibration tape is set with in the external drive calibration tape.

1) from excircle direction (near data leading-out zone DTLDO) to inner circumferential side integrally order setting (structure) to external drive calibration tape EDRTZ is provided.

---external drive calibration tape 1 (EDRTZ1) is set to the district that the position of the excircle from the most close data field (the most close data leading-out zone DTLDO) begins to concentrate; And external drive calibration tape 1 (EDRTZ1) is used up, thereby can be for the second time this external drive calibration tape 2 (EDRTZ2) be set to be present in the district that is corrected in the inner circumferential side outside the current location.

2) inner circumferential side from external drive calibration tape EDRTZ is sequentially tested and is write.

---test under the situation about writing in external drive calibration tape EDRTZ is along carrying out that this test writes and work as Pretesting and write being right after not record position after test writes the position of (record) in advance to the trench region 214 that outer circumferential sides is arranged with screw type from inner circumferential side.

The data field is constructed to, and adds writing along the trench region of arranging with screw type to outer circumferential sides from inner circumferential side 214.Be used for the sequence of positions after the test writing position is added the method that writes by use, can carry out the processing operation of from " checkout write position " immediately to " working as Pretesting writes ", in described test writing position, just just carried out the test of external drive calibration tape is write before, thereby promoted test to write processing, and simplified management the test writing position among the external drive calibration tape EDRTZ.

3) reset data leading-out zone DTLDO with the form that comprises the external drive calibration tape.

---in the DTA of data field is provided with such two districts, that is, and and expansion spare area 1 (ESPA1) and expansion spare area 2 (ESPA2), and two districts are set, that is, and external drive calibration tape 1 (EDRTZ1) and external drive calibration tape 2 (EDRTZ2).Present embodiment is characterised in that, can reset data leading-out zone DTLO at comprising up to the district of external drive calibration tape 2 (EDRTZ2).Simultaneously, reset the scope of data field DTA, but make it be easy to the additional writing range 205 of the user data that exists among the management data district DTA in the mode of range reduction.

Under the situation that setting is reseted, the position that is provided with of expansion spare area 1 (ESPA1) is considered to " the expansion spare area of having used up ", and if any, then only manage not recording areas (allowing to add the district that test writes) in the expansion spare area 2 (ESPA2) in being included in external drive calibration tape EDRTZ.In the case, be recorded in position in the expansion spare area 1 (ESPA1) and be sent to the district that in expansion spare area 2 (ESPA2), does not substitute for the alternative zero defect information of using up, and defect management information is rewritten.Start position information on the data leading-out zone DTLDO that resets is recorded in the distribution locations information on up-to-date (renewal) data field DTA of the RMD field 0 that is comprised among the record management data RMD.The structure of the frontier district in the write-once type information storage medium is described to 17D with reference to Figure 17 A here.When at first a frontier district being set in the write-once type information storage medium, when by the inner periphery size frontier district BRDA#1 (the most close data importing district DTLDI) being set, shown in Figure 17 A, thereafter, the border-outer BRDO after the above-mentioned district is formed.

And attempting under the situation that next frontier district BRDA#2 is provided with, shown in Figure 17 B, next (#1) border among the area B RDI after #1 border-outskirt BRDO forms the preceding, thereafter, next frontier district BRDA#2 is set.Close under the situation of next frontier district BRDA#2 in trial, and then distinguish BRDA#2 (#2) border-outskirt BRDO afterwards and be formed.In the present embodiment, next after preceding (#1) border-outskirt BRDO (district (#1) border in BRDI) is formed and the state that is combined is known as boundary strip BRDZ.Be provided with boundary strip BRDZ prevent shaven head when using information reproduction device to reproduce between the BRDA of frontier district surpassed distance (supposing to have used the PDP detection technique).Therefore, under the situation of the write-once type information storage medium that reproduces the information that wherein records by the use read-only device, suppose, carrying out closing of border handles, thereby border-outskirt BRDO and border-inner region BRDI is recorded, and the border-outskirt BRDO after the last frontier district BRDA is recorded.The first frontier district BRDA#1 by 4080 or more physical segment pieces constitute, and need the first frontier district BRDA#1 upwards have 1.0mm or bigger width in the footpath of write-once type information storage medium.Figure 17 B shows the example that external drive calibration tape EDRTZ is set in the DTA of data field.

Figure 17 C shows the state that reaches after finishing the write-once type information storage medium.Figure 17 C shows an example, wherein, external drive calibration tape EDRTZ be incorporated among the data leading-out zone DTLDO and, expansion spare area ESPA is set up.In the case, but use one border-outskirt BRDO and fill up the additional writing range 205 of user data.

Figure 17 D shows the detailed data structure among the above-mentioned border zone BRDZ.In the information each is the size unit record with a physical segment piece all.On the border-the Copy Info C_RMZ that begins to locate to record the content that is recorded in the record management band of outskirt BRDO, and record border end mark (stop piece) STB of expression border-outskirt BRDOP.And, under next border condition in reaching district BDI, first mark (next boundary marker) NBM, the second mark NBM and the 3rd mark NBM separately are recorded in 3 positions altogether respectively with physical segment block size one by one, and first mark (next boundary marker) NBM represents that next frontier district reaches from " N1 " physical segment piece of the physical segment BOB(beginning of block) number that has wherein recorded border end mark (stop piece) STC; The second mark NBM represents that next frontier district has reached " N2 " physical segment piece; And the 3rd mark NBM represents that next boundary strip reaches " N3 " physical segment piece.The physical format information U_PFI that upgrades is recorded among next border-inner region BRDI.In current DVD-R or DVD-RW dish, under the situation that does not reach next border (in last one border-outskirt BRDO), the position (position of a physical segment block size) of should write down shown in Figure 17 D " the mark NBM that represents next border " is retained as " the not position of record data ".If carry out closing of border under this state, then write-once type information storage medium (current DVD-R or DVD-RW dish) enters the state by using traditional DVD-ROM driver or traditional DVD player to reproduce.Tradition DVD-ROM driver or traditional DVD player utilization are recorded in the track displacement detection that record mark on this write-once type information storage medium (current DVD-R or DVD-RW dish) is used DPD (differential phase detection) technology.Yet, in above-mentioned " the not position of record data ", in a physical segment block size, there is not record mark, therefore, can use the track displacement detection of DPD (differential phase detection) technology.Therefore, have the problem that the track servo device can not stable application.

In order to solve the problems referred to above of current DVD-R or DVD-RW dish, present embodiment newly is used for the method for following situation:

1) reaching under the situation of next frontier district, in " should write down the position of the mark NBM on next border of expression ", writing down the data of AD HOC in advance; And

2) partly and dividually carry out " overwrite process " at the position of expression " the mark NBM that represents next border " with specific logging mode, wherein, reaching under the situation of next frontier district, write down the data of AD HOC in advance, thereby utilize the identifying information of expression " reaching next frontier district ".

By the mark of representing next border being set owing to overriding, realized such beneficial effect, promptly, even reach under the situation of next frontier district shown in the item (1), also can in " should write down the position of the mark NBM on next border of expression ", be pre-formed the record mark of AD HOC, and after closing of border, even read-only type information reproduction device carries out the track displacement detection according to the DPD technology, the track servo device can be stabilized application.If override new record mark on a part of top that in the write-once type information storage medium, forms record mark, also there is such danger, that is the stability decreases of PLL circuit shown in Figure 8 in information recording/reproduction device or information reproduction device.In order to overcome this danger, present embodiment is further new to be adopted because the method for following situation:

3) when the position at " the mark NBM that represents next border " of a physical segment block size overrides, override state according to the position change that is included in the same data segment;

4) in synchrodata 432, override, and forbid synchronous code 431 is override; And

5) override in the position beyond data ID and IED.

As described later, data field 411 to 418 and the protected location 441 to 448 that is used for user data alternately is recorded in information storage medium.Be known as data segment 490 by data field 411 to 418 and protected location 441 to 448 are combined the group that obtains, and a data segment length is consistent with a physical segment block length.PLL circuit 174 shown in Fig. 8 especially helps to carry out PLL and imports in VFO district 471 and 472.Therefore,, import again, therefore, reduced influence the total system in information recording/reproduction device or the information reproduction device by using VFO district 471 and 472 also can easily carry out PLL even PLL just pass by before VFO district 471 and 472.Reached such beneficial effect, promptly (3) override state by utilization, change this state according to the position in the aforesaid data segment, and the amount of overriding of AD HOC is increasing near the VFO district 471 and 472 the back that are included in the same data segment, thus can help to judge " mark of representing next border " and can be when reproducing the degree of accuracy decline of anti-stop signal PLL.

Physical sector is constituted by the position, and in described position, synchronous code (SY0 to SY3) is arranged, and synchrodata 434 is arranged between these synchronous codes 433.Information recording/reproduction device or the information reproduction device raceway groove bit pattern on being recorded in information storage medium synchronous code 43 (SY0 to SY3) is sampled, and detect the border of this raceway groove bit pattern.As described later, from data ID information, the positional information (physical sector number or logic sector number) that is recorded in the data on the information storage medium is sampled.Be right after the IED that after the information of sampling, arranges by use and detect the data ID mistake.Therefore, present embodiment can (5) be forbidden data ID and IED are being override, and (4) partly override in the synchrodata 432 beyond synchronous code 431, therefore, permission detects the data ID position, and allows to reproduce (content reads) by the synchronous code 431 in the use " the mark NMB that represents next border " and be recorded in information in the data ID.

Figure 16 A to 16D show with Figure 17 A to shown in the 17D with the write-once type information storage medium in another different embodiment of embodiment of structurally associated of frontier district.Figure 16 A and 16B show the identical content of Figure 17 A and 17B.Finally finish constitutional diagram 16A and 16B afterwards according to the write-once type information storage medium and be different from Figure 17 C.For example, shown in Figure 16 C, after the information in being included in frontier district BRDA#3 has been recorded,, handle as closing of border attempting just after the BRDA#3 of frontier district, forming border-outskirt BRDO under the situation that realizes finally finishing., border frontier district BRDA#3 after-outskirt DRDO after form end mark district TRM, finally finish the required time thereby reduced thereafter.

, in the embodiment shown in the 17D, need to fill expansion spare area ESPA district before at Figure 17 A with border-outskirt BRDO.Such problem occurred, that is, needed the plenty of time to form this border-outskirt BRDO, thereby prolonged the final deadline.On the contrary, in the embodiment shown in Figure 16 C, relatively shorter end mark district TRM is set in length; Whole districts outside the terminal symbol TRM are defined as data leading-out zone NDTLDO; And the outer non-recorded part of end mark TRM is set to user keep-out area 911.That is, when finally having finished data field DTA, end mark district TRM is formed on the end (just after border-outskirt BRDO) of record data.The full detail that is included in the master data in this district is set to " 00h ".The type information in this district is set, thereby this end mark district is defined as new data leading-out zone NDTLDO in the attribute of data leading-out zone NDTLDO, shown in Figure 16 C.As described later, the type information in this district is recorded in the district's category information 935 that is included in the data ID.That is, the district's category information 935 that is included in the data ID among this end mark district TRM is set to " 10b ", thereby the expression data are present in data leading-out zone DTLDO.Present embodiment is characterised in that, with data ID inner area category information 935 identifying information that data derive the position is set.

In information recording/reproduction device or information reproduction device shown in Figure 8, we consider that information recording/regenerating unit 141 has carried out the situation of random access to write-once type fresh information storage medium objectives position.Just after random access, information recording/regenerating unit 141 must reproduce data ID, and decoded data frame number 922, where has reached go the write-once type fresh information storage medium so that understand.In data ID, district's category information 935 is present in the position near data frame number 922.At this moment, only by this district's category information 935 of decoding, just whether identifying information recoding/reproduction unit 141 is present among the data leading-out zone DTLDO immediately.Therefore, can simplify and high speed access control.As mentioned above, by end mark district TRM is carried out the identifying information that data ID inside is provided with provides data leading-out zone DTLDO, thereby can easily detect end mark district TRM.

As a specific example, be set at border-outskirt BRDO under the situation of attribute of data leading-out zone NDTLDO (promptly, district's category information 935 in the data ID of the Frame in being included in border-outskirt BRDO is set under the situation of " 10b "), this end mark district TRM is not provided with.Therefore, when having write down end mark district TRM, this district has data leading-out zone NDTLDO attribute, and this end mark district TRM is considered to the part of data leading-out zone NDTLDO, thereby forbids recording among the DTA of data field.The result can keep user keep-out area 911 shown in Figure 16 C.

In the present embodiment, change the size of end mark district TRM, thereby reduced the final deadline and realized effective processing according to the position on the write-once type information storage medium.This end mark district TRM represents the end position of record data.In addition, even be used in this district under the situation in this district of a read apparatus that carries out the track displacement detection according to the DPD technology, the end mark district also is used to prevent because the surpassed distance that the track displacement causes.Therefore, because read-only Device Testing characteristic is necessary for minimum 0.05nm or more so have the radial width (width of the position that end mark district TRM is filled) of the write-once type information storage medium of end mark district TRM.The length in one week of write-once type information storage medium is according to radial position and difference, and therefore, the quantity that is included in the physical segment piece in the week is also according to radial position and difference.Therefore, the size of end mark district TRM is according to the physical sector number of the physical sector that begins to locate that is positioned at end mark district TRM and difference, and along with physical sector has arrived outer circumferential sides, the increase of the size of end mark district TRM.The physical sector number of the end mark district TRM that allows must be greater than " 04FE00h ".This derives from the first frontier district BRDA#1 by 4080 or the restrictive condition that constitutes of more physical segment pieces, make the mark zone BRDA#1 that wins must have the write-once type information storage medium radially on equal or be longer than the width of 1.0mm.End mark district TRM must be from the boundary position of physical segment piece.

In Figure 16 D, for previous reasons each position that will be recorded at each physical segment block size configuration information, and the user data that is write down that is distributed in the 64KB altogether in 32 physical sectors is recorded in each physical segment piece.Shown in Figure 16 D, at each of information relevant physical segment piece number is set, and with the ascending order that begins from the minimum related physical segment number item of recorded information sequentially the write-once type information storage medium.In the embodiment shown in Figure 16 A to 16D, content is identical duplicates among the Copy Info recording strip C_TRZ that CRMD#0 to CRMD#4 is overwritten in the content in the record management band that is recorded in shown in Figure 17 D for five times.By carrying out this reliability that overrides when improve reproducing, and, even dust or cut appear on the write-once type information storage medium, also can stably reproduce the Copy Info CRMD of the content that is recorded in the record management band.Although the border end mark STB shown in Figure 16 D is consistent with the border end mark STB shown in Figure 17 D,, be different from the embodiment shown in Figure 17 D, the embodiment shown in Figure 16 D does not have the mark NBM on next border of expression.The full detail that is included in the master data in reserved area 901 and 902 is set to " 00h ".

On the border-inner region BRDI begin the place, with the identical information of upgrading of physical format information U_PFI by N+1 to N+6 manifolding six times, the physical format information U_PFI of the renewal of structure shown in Figure 17 D.Therefore, the physical format information U_PFI of renewal is made carbon copies, thereby has improved information reliability.

In Figure 16 D, present embodiment is characterised in that, on the border-and inner region BRDI is provided with the record management band RMZ in the boundary strip.Shown in Figure 15 A, the size that is included in the record management band RMZ among the data importing district DTLDI is smaller.If frequently repeat new frontier district BRDA is provided with, the record management data RMD that then is recorded among the record management band RMZ is saturated, thereby the new frontier district BRDA in the middle of being positioned at can not be set.In the embodiment shown in Figure 16 D, realized such beneficial effect, promptly, because the record management band of the record management data RMD that record is relevant with subsequently frontier district BRDA#3 is arranged among border-inner region BRDI, thereby the setting to new frontier district BRDA can repeatedly be provided, and can significantly improve the additional amount of writing among the BRDA of frontier district.Under the pent situation of frontier district BRDA#3 after the border-inner region BRDI that follows the record management band RMZ that is comprising in this boundary strip, perhaps under the situation that data field DTA is finally finished, must be in the spare area 273 that is based upon with recording status not among the record management band RMZ whole last record management data RMD duplicate records, and fill whole spare areas with these data.Like this, can eliminate the not spare area 273 of recording status, (because DPD cause) track displacement in the time of can preventing from read-only device, to reproduce, and can improve the reproduction reliability of record management data RMD by the duplicate record record management data.The total data that is included in the reserved area 903 is set to " 00h ".

Although border-outskirt BRDO is used for preventing because the surpassed distance that the track of read-only device is shifted and causes when hypothesis is used DPD, but, except the information among physical format information U_PFI with renewal and the record management band RMZ that is included in the boundary strip, border-inner region BRDI does not need to have king-sized size.Therefore, attempt size is reduced to minimum (it is required the to carry out boundary strip BRDZ record) time when reducing new frontier district BRDA is set.For Figure 16 A, before causing forming border-outskirt BRDO, but there is the additional writing range 205 of very high possible user data enough big, and carries out a large amount of additional writing owing to closing of border.Therefore, need mainly get " M " value shown in Figure 16 D, thereby can repeatedly write down record management data among the record management band RMZ in boundary strip.On the contrary, for Figure 16 B, before the closing of border of frontier district BRDA#2 and under the state before record delimitation-outskirt BRDO, but the additional writing range 205 of user data narrows down, therefore, consider not to being done large increase by the additional amount of writing of the record management data among the additional record management band RMZ that is written in the boundary strip.Therefore, just the record management band RMZ among the border before the BRDA#2 of frontier district-inner region BRDI the desirable relatively little value of size " M " is set.That is, when the position that border-inner region BRDI arranges advanced to inner circumferential side, the additional amount that writes record management data of prediction increased.When the position advanced to excircle, the additional amount that writes record management data of prediction reduced.Therefore, present embodiment is characterised in that the size of border-inner region BRDI reduces.As a result, the time decreased of new frontier district BRDA is set, and treatment effeciency improves.

The logical record unit that is recorded in the information among the frontier district BRDA shown in Figure 17 C is known as the R band.Therefore, a frontier district BRDA is made of at least one or a plurality of R band.In current DVD-ROM, the file system that adopts " UDF bridge " by name is as file system, in this document system, meet UDF (universal disc format) file control information and meet ISO 9660 file control information the two be recorded in simultaneously in the information storage medium.In the file management method that meets ISO 9660, existence must be with the rule of a file continuous recording in information storage medium.That is, be included in the information in the file distributed locations of spaced apart that be under an embargo at information storage medium.Therefore, for example, under the situation according to above-mentioned UDF bridge recorded information, continuous recording constitutes the full detail of a file.Therefore, can adopt the district of a file of continuous recording so that constitute a R band.

Figure 18 A shows the data structure of control data band CDZ and R physical message band RIZ to 18D.Shown in Figure 18 B, have physical format information (PFI) and dish manufacturing information (DMI) among the control data band CDZ, and similarly, comprise DMI (dish manufacturing information) and R_PFI (R physical format information) among the R physical message band RIZ.

Make record and relevant information 251 and the media manufacturer nationality information 252 of medium manufacturing country among the relevant information DMI at medium.When the information storage medium that buys has been invaded patent right, such situation is arranged, that is, the infringement warning is provided to the such country that has manufacturing location or consumption (or use) information storage medium.Discern manufacturing location (national title) by the information of forcing record to be included in the information storage medium, and the infringement warning easily is provided, thereby protected intellecture property, and promoted technical progress.And other medium is made relevant information 253 and will be recorded among the medium manufacturing relevant information DMI.

Present embodiment is characterised in that, according to the record position among physical format information PFI or the R physical format information R_PFI (with respect to the byte location of beginning), the type of the information that appointment will be recorded.That is,, the common information in the DVD family 261 is recorded in from byte 0 to byte 31 32 byte regions for the record position among physical format information PFI or the R physical format information R_PFI; Being recorded in as the common information 262 in the theme HD_DVD family of present embodiment from byte 32 to byte 96 bytes of 127; The unique information (customizing messages) relevant with various standard types or part version be recorded in from byte 128 to byte 384 bytes of 511; And being recorded in from byte 512 to byte 1536 bytes of 2047 with each revision information corresponding.Like this, according to the information distribution position in the public use physical format information of the content of information, thereby according to the position of the public service recorder information of media type, thereby can the public reproduction processes of carrying out or simplifying information-recording apparatus or information recording/reproduction device.Shown in Figure 18 D, the common information 261 that is recorded in the DVD family of byte 0 in the byte 31 is divided into: but the information 267 of public records in whole read-only type information storage mediums and rewriting type information storage medium, and in the write-once type information storage medium from byte 0 to byte 16 these information of record; With information 268, but its public records in the rewriting type information storage medium and in the write-once type information storage medium, from byte 17 to byte 31, and it is not recorded in the read-only type medium.

Now, will the meaning of 2047 the information content 264 that can be provided with at each revision provide description to the meaning of the customizing messages 263 of type of each specification of 511 from byte 128 to byte shown in Figure 18 C and version with from byte 512 to byte.Promptly, the customizing messages 263 of the type of each standard of 511 and version from byte 128 to byte, do not consider the write-once type information storage medium, but the meaning of the content of the recorded information of each byte location is consistent with dissimilar rewriting type information storage mediums.Can allow such fact at the information content 264 that each revision of 2047 from byte 512 to byte is provided with, promptly, if differ from one another with a kind of medium kind revision, and but the difference between rewriting type information storage medium and the write-once type information storage medium differs from one another, and then the meaning of the content of the recorded information of byte location differs from one another.

A kind of concrete grammar that is used for the mount message recording/reproducing apparatus will be described as follows.Instructions (version book) or revision volume have illustrated the reproducing signal feature from reproducing signal He " L-H " recording sheet of " H-L " recording sheet.Simultaneously, provided corresponding in twos PR equalizing circuit 130 and Viterbi decoder 156 among Fig. 8.When information storage medium is installed in information regeneration unit 141, reading the slice level detection circuit that is included in the information among the Lead-In Area SYLDI of system will be unlocked.The polarity information of the record mark of these slice level detection circuit 132 reading and recording in this 192 byte (with identification " H-L " or " L-H "); And judge " H-L " or " L-H ".For responding this judgement, through the circuit conversion in PR equalizing circuit 130 and this Viterbi decoder 156, the information that is recorded in data importing district DTLDI is reproduced.Above-described method can be quick relatively, the more accurate information that is included among this data importing district DTLDI of reading.Illustrated by byte 17 although defined the revisions number information of dominant record speed, and the revisions number information that has defined smallest record speed is by byte 18 explanations, these items of information just are used to provide and have defined minimum and maximum range information.Carry out under the most stable record case, need best linear velocity information in the time of record, relevant information is recorded in the byte 193.

Present embodiment is characterised in that, the edge strength information that comprises the optical system radially that comprises in the edge strength information of optical system along the circumferential direction and the byte 195 in the byte 194, these information are recorded in as the optical system status information before the information about various recording status (write-in policy), should be included in the information content 264 that specifically is set to each version about information of various recording status.When differentiation was arranged on the recorded information at the back side, these items of information had been represented the conditional information of used bare headed optical system.Edge strength used herein has represented incident light before a certain information storage medium recording surface is assembled, and incides the distributions of object lens.This intensity is defined as when incident intensity center of distribution intensity level is defined as 1, the intensity level of a certain circumferential position of object lens (circumferential position that baffle plate is outer).This incident intensity distribute with respect to object lens be not a little-point-symmetric, form oval the distribution because the radial direction of information storage medium and circumferencial direction is different, this edge intensity value computing is differing from each other.Therefore, these two values go on record.The focal spot size of recording surface reduces along with the increase of edge intensity value computing in this information storage medium, thereby the optimal recording power condition is along with edge intensity value computing changes.Information in the recording/reproducing apparatus identifies the information that is contained in the edge intensity value computing in self shaven head in advance.Therefore, this equipment along the circumferential direction reads the edge intensity value computing of this optical system with radial direction, with this value record in the information storage medium, and the value in self shaven head relatively.If comparative result difference is little, the recording status of back side record will be used.If difference is very big, the storage condition that needs to be recorded in the back side neglects, and tests when writing when the recording/reproducing apparatus utilization drives calibration tape DRTZ, need begin to discern the best titime state.

Therefore,, carry out selftest when writing, need quick decision whether utilize the recording status of back side record, or do not begin to distinguish the best titime state when ignoring this information.Can obtain useful effect: this edge strength information is read out, the information of the relevant optical system that is identified of the position of the front by being organized in the position that recommended record condition writes down then, judging the record condition that the back is provided with and can be satisfied at a high speed.

According to present embodiment, as mentioned above, provide respectively: when the instructions (version book) of release content when great changes have taken place; The revision volume that corresponding version changes or proposes, and the proposition of having only the revision volume, this twists in and only upgrades revision when writing speed is improved.Therefore, if each revisions number is inequality, the recording status in the revision volume changes thereupon.Like this, will be the information content 264 of 2047 each revision about the information spinner of recording status (write-in policy) from byte 512 to byte by physical record.By physical record the information content 264 these facts of approval in 2047 each revision from byte 512 to byte, if each revision is inequality in the same type medium, and but also there is difference in rewriting type information storage medium and write-once type information storage medium between different classes of, and the importance of recorded information content also is inequality on the byte location.

In a kind of write-once type information storage medium, about being recorded in the R type physical format information of R type physical message district RIZ among the data importing district DTLDI, boundary strip start position information (the circumference address of the first border outermost) is added among the physical format information RFI (duplicating of the total information of HD-DVD family), and the information of this interpolation is illustrated.Be updated in the physical format information U_PFI of the renewal of Figure 17 A in to 17D or Figure 16 A to the border shown in the 16D-inner region BRDI, start position information (the circumference address of oneself boundary outermost) is added to (copy of the total information of HD-DVD family) in the physical format information, and writes down this interpolation information.The start position information of this renewal is arranged on byte 256 in byte 263, this position is positioned at and follows closely relevant as peak power or bias power 1 (information content 264 of each revision is set specially) information position afterwards, and this position is arranged in total information 262 back that are included in DVD family.

For the specific information content of relevant boundary strip start position information, in PSN (physical sector number), described to be positioned at and generally adopted at present 256 to the relevant border-outskirt ERDO of the BRDA outside, (current) frontier district of byte 259 records start position information; And border-inner region BRDI start position information of the relevant frontier district BRDA that next step will be used has been described in byte 260 in physical sector number (PSN) in the byte 263.

The detailed information content of the start position information of relevant renewal has shown up-to-date up-to-date boundary strip positional information when having set frontier district BRDA.Physical sector number PSN has described common employing byte 256 is positioned at the relevant border-outskirt BRDO of BRDA outside, (current) frontier district to byte 259 records start position information; Physical sector number is described border-inner region BRDI start position information of relevant next step frontier district BRDA that uses in the byte 263 in byte 260.When a frontier district BRDA can not write down instantly, this district (from byte 260 to byte 263) all filled with " 00h ".

On the contrary, the R type physical format information R_PFI in the write-once type information storage medium has write down the end position information of record data among the dependence edge battery limit (BL) BRDA.

And read-only type information storage medium has write down the end address information that comprises from reproduction optical system is looked top " 0 layer ", but the rewriting type information storage medium has write down the difference information of every of start position information between groove bank district and the trench area.

Shown in Figure 17 D, relevant Copy Info is present among border-tyre ERDO as the Copy Info C_RMZ that has represented to be recorded in content in the record management band.Shown in Figure 15 B, this record management band RMZ has write down RMD (record management data), and this RMD has the size of data identical with the physical segment piece, like this, each new record management data RMD that upgrades, the content of record management data RMD can continuous backward interpolation.This record management data RMD also is divided into the tiny RMD field information RMDF of 2048 byte-sized.2048 initial in record management data bytes are used as the reserved area.

In information reproduction device shown in Fig. 8 or information recording/reproduction device, wobble signal detection unit 135 uses push-pull signal to be used for the track displacement detection.In track displacement detection circuit (wobble signal detection unit 135), as above push-pull signal (I1-I2) _PP/ (I1+I2) _DCValue, can be 0.1≤(I1-I2) _PP/ (I1+I2) _DCStably carry out the track displacement detection in≤0.8 the scope.Especially, about " H-L " recording sheet, can be 0.26≤(I1-I2) _PP/ (I1+I2) _DCMore stably carry out the track displacement detection in≤0.52 the scope, about " L-H " recording sheet, can be 0.30≤(I1-I2) _PP/ (I1+I2) _DCMore stably carry out the track displacement detection in≤0.60 the scope.

Therefore, in the present embodiment, the information storage medium characteristic is defined, thereby push-pull signal is included in 0.1≤(I1-I2) _PP/ (I1+I2) _DC(best, about " H-L " recording sheet, push-pull signal is included in 0.26≤(I1-I2) in≤0.8 the scope _PP/ (I1+I2) _DCIn≤0.52 the scope; About " L-H " recording sheet, push-pull signal is included in 0.3≤(I1-I2) _PP/ (I1+I2) _DCIn≤0.6 the scope).Above scope is defined with in the record position and Unrecorded position (position that does not have record mark) that are based upon data importing district DTLDI or data field DTA and data leading-out zone DTLDO (position that record mark exists).Yet, in the present embodiment, being not limited thereto, this scope can be defined with the position that only is based upon record (position that has record mark) or be based upon Unrecorded position (position that does not have record mark).In addition, in the present embodiment, as the record the position and (I1-I2) of (I1-I2) signal in the Unrecorded position _PPThe back and (I1-I2) _PPPreceding amplitude ratio, information storage medium characteristic are defined as satisfying 0.7≤(I1-I2) _PPThe back/(I1-12) _PPBefore≤1.50, and no matter what can be used is " H-L " recording sheet or " L-H " recording sheet.In the push-pull signal amplitude range, show by the percentage relevant with actual push-pull signal range value with the push-pull signal amplitude of minimum effective 7 descriptions and the value of trade shape.For example, be that 0.7=70/100 is obtained under 0.70 (70%) the situation in the amplitude of push-pull signal.Therefore, as the data that are described in this field, information " 0100 0110b " is described, and this information is expressed decimal value " 70 " with binit.

Under the situation of write-once type information storage medium, carrying out tracking (record mark is formed in the pre-groove district) in the pre-groove district.Therefore, the detection signal level of signal indication when in the pre-groove district, carrying out tracking on this track.That is, when the orbit ring shown in Figure 27 B for example is ON, the information representation signal level of recording areas (Iot) not on the above-mentioned track _GrooveThe present invention allows record mark is formed on the zone between the pre-groove.In the case, " groove bank " can be considered as " groove ".

In R physical format information R_PFI, physical sector number (030000h) is recorded, and this number expression is included in the start position information among the DTA of data field.In addition, physical sector number is recorded, and this number is illustrated in the position of having carried out last record in the last R band that is included in the frontier district.

In the physical format information U_PFI that upgrades, record: physical sector number (030000h), expression is included in the start position information among the DTA of data field; And physical sector number, the position of having carried out last record in the last R band of indication in being included in the frontier district.

According to another embodiment, these position information item can number be described with the ECC block address, rather than describe in the physical sector number mode.As described below, in the present embodiment, an ECC piece comprises 32 sectors.Therefore, the physical sector number of the sector of the starting position that minimum effective 5 bits of physical sector number of specific ECC piece beginning sector are adjacent with the ECC piece is consistent.Be assigned with in physical sector number, thereby minimum effective 5 bits of physical sector number of ECC piece beginning sector be under the situation of " 00000 ", in the same ECC piece in all sectors minimum effective 6 bits of all physical sector number or more than 6 bits in value consistent each other.Therefore, remove minimum effective 5 bits of physical sector number of sector in the above-mentioned identical ECC piece, and the information that only sampling of minimum effective 6 bits and back is obtained is defined as ECC block address information (or ECC block address number).As described below, the data segment address information (or physical segment piece information) that writes down in advance by wobble modulation is consistent with top ECC block address.Therefore, describe when being included in the positional information of record management data RMD in the ECC block address number, it is as described below to obtain useful effect:

1) accelerated especially the not visit of recording areas:

---because the positional information among the record management data RMD is consistent with the block address information that writes down in advance by wobble modulation, so promoted the difference computing; And

2) reduced the management data size of record management data RMD:

The number of bits of each address information of---describe reduces by 5 bits.

As described below, single physical segment block length is consistent with the individual data segment length, and the user data of single ECC piece is recorded in the individual data section.Therefore, address table is shown " ECC block address number "; " ECC block address "; " data segment address "; " data segment number " or " physical segment piece number " or the like.The same meaning has been represented in these descriptions.

Be present in the distribution locations information of the record management data RMD in the RMD field 0, the capacity information that can add the record management band RMZ that writes record management data RMD continuously is recorded in ECC module unit or the physical segment module unit.Shown in Figure 15 B, record management data RMD is recorded in the physical segment piece in mode one by one, thereby, according to this information, the number of times that writes record management band RMZ that the record management data RMD that can determine to upgrade can add.Next step, the current record management data number is recorded among the record management band RMZ.This expression has been recorded in number information of the record management data RMD of record management band RMZ.For example, suppose that this information is consistent with information among the example record management data RMD#2 shown in Figure 15 B, the second record management data RMD that writes down among this information and the record management band RMZ is consistent, thereby, in this field, be recorded as " 2 ".Next step, the surplus information among the record management band RMZ is recorded.Number information of this record management data RMD of this record management band RMZ can be further added in this information representation to, and describes in physical segment module unit (=ECC module unit=data segment unit).In last three items of information, set up time relation of plane.

[size information of RMZ wherein has been set]=[current record management data number]+[surplus among the RMZ]

The present embodiment characteristics are that use amount or the surplus information of the record management data RMD among the record management band RMZ are recorded in the recording areas of this record management data RMD.

For example, all information are recorded in the write-once type information storage medium under once the situation, and this record management data RMD can only be recorded once.Yet, attempt additional writing (but the additional of user data in the additional writing range 205 of user data writes), the additional record management data RMD that need write renewal when taking place that writes is arranged at every turn at the very tiny duplicate record user data of write-once type information storage medium.In this case, if this record management data RMD is by frequent additional writing, the reserved area 273 shown in Figure 15 B is with deleted, and information recording/reproduction device need be tackled this deletion.Therefore, the recording areas that the use amount of record management data RMD among this record management band RMZ or surplus information are recorded in this record management data, thereby can determine in advance that this record management band RMZ can not add write state, and by information recording/reproduction device taking action early.

According to the example of the disposal route that an external drive calibration tape EDRTZ newly is set, the test of being undertaken by this information recording/reproduction device shown in Figure 8 and this band writes and will give explanation.

1) the write-once type information storage medium is installed in the information recording/reproduction device.

2) data of burning district BCA formation are reproduced by this information recording/regenerating unit 141; This recorded information is supplied to control module 143; Information is decoded in control module 143, and can decision be for further processing.

3) be recorded in the interior information of the Lead-In Area SYLDI of system control data band CDZ by information recording/regenerating unit 141 records, this information reproduction is sent to this control module 143.

4) when recommending recording status Be Controlled unit 143 to determine, edge intensity value computing compares with the edge intensity value computing that is used for information recording/regenerating unit 141 shaven heads; The required district's capacity of test input is determined.

5) information in the record management data is reproduced by information recording/regenerating unit 141, and this information reproduction is sent to this control module 143.Information in this control zone RMD field 4 is decoded, and judges whether to exist and be used to test the rich space that writes required district's capacity, and size is the 4th) determine in the step.Judged result is under the sure situation, continues to carry out the 6th) step.Otherwise, forward to and carry out the 9th) and the step.

6) according to being used to drive end position information that calibration tape DRTZ test writes or being used to test the external drive calibration tape EDRTZ that writes from RMD field 4, beginning to test writing position can be determined.

7) by the 6th) position determined of step, the 4th) capacity determined of step can test and write.

8) according to the 7th) processing in step, be used to test the number of positions that writes and be increased, thereby, be used to test the end position information that writes a little by rewriteeing, the records management information that obtains is temporarily stored in storage unit 175, forwards to carry out 12) go on foot.

9) these information recording/regenerating unit 141 reading and recording " but end position of up-to-date user data recording interval 205 " information in RMD field 0, or " the end position information of the scope write that user data is additional " that writes down in the data field DTA distribution locations information in the physics form; And control module 143 also is provided with new one group of scope that drives calibration tape EDRTZ in inside.

10) according to the result who describes in the step 9), " but end position of up-to-date user data recording interval 205 " information of record can be updated in the RMD field 0, the additional value information that is provided with of external drive calibration tape EDRTZ is increment (that is, counting is added 1) with 1 in the RMD field 4; In addition, by adding beginning/end position information that external drive calibration tape EDRTZ newly is set, this record management data RMD that these storage unit 175 interim storages obtain.

11) handle from the 7th) step forwards the 12nd to) step.

12) with execution in step 7) test is written as the result, under the best titime state, but additional the writing in the additional writing range 205 of access customer of required user profile.

13) storage unit 175 interim stored record management data RMD, this record management data RMD is updated by the additional beginning/end position information that writes that the newly-generated Zone R of step 12) comprises.

14) these control module 143 control information recoding/reproduction unit 141 will be stored in up-to-date record management data RMD in the storage unit 175 temporarily and additionally be recorded in the reserved area 273 (for example, Figure 15 B) that this record management band RMZ comprises.

Can be from the information acquisition that is included in " being lastly recorded in the record position management data RMD the extension record location management band RMZ of last setting " about the physical sector number of the position of the last record in the write-once type information storage medium shown in the indication present embodiment or the information of physics segment number (PSN).Promptly, record position management data RMD comprises: about the end position information of the n " type that finishes R be with (R that finishes band) " that describes in RMD field 7 or thereafter or about the information of " the physical sector number LRA that represents the last record position of n R in being with ", thereby the record position management data RMD from the expansion RMZ that is lastly recorded in last setting (for example, with reference to the RMD#3 shown in the figure 15B) in read physical sector number or physics segment number (PSN) in the position of last record, and make it possible to know the position of this last record from the result who reads.

Information reproduction device uses DPD (differential phase detection) technology to substitute the push-pull technique that is used for the track displacement detection, therefore, can only carry out tracking control in the district that has convex-concave or record mark.Therefore, information reproduction device can not provide the visit to the not recording areas of write-once type information storage medium, makes to carry out in comprising the RMD dubs RDZ of recording areas not to reproduce.Therefore, record record position management data RMD wherein can not be reproduced.On the contrary, information reproduction device can reproduce the physical format information UPFI of physical format information PFI, R physical message band R-PFIZ and renewal.Therefore, can retrieve the position of last record.

Information reproduction device is carried out information regeneration in the Lead-In Area SYLDI of system, read the rearmost position information (about the information of " indicating the physical sector number of the position of the last record in the last R band in corresponding border-inner region ") about the information data that is recorded in the existence among the R physical message band R-PFIZ then.As a result, can know the rearmost position of frontier district BRDA#1.In addition, after verification is distributed in the position of the border-outer BRDO after just being the rearmost position, can read about being recorded in the information of the physical format UPFI that just is the renewal among border-Nei BRDI of record after the position of verification.

The method of " physical sector number of the position of the last record in the last R band in the border-inner region of indication correspondence " that alternative above-mentioned Figure 19 of utilization describes, can be by using the starting position (finding out that from Figure 16 C is clear the starting position of border-outer BRDO is represented in this starting position) that visit is provided to border-outer BRDO about the information of " the physical sector number PSN of the starting position of indication boundary strip " that in the 256th to 263 byte, describe.

Next, visit is provided for the rearmost position of record data, thereby reads the rearmost position information (Figure 19) about the record data among the physical format information UFPI that is included in renewal.Reading and recording in the physical format information of upgrading " about the physical sector number of last record or the information of physics segment number (PSN) " and provide anti-then based on the information that reads and ask the physical sector number of last record or the processing operation of physics segment number (PSN) is repeated until the physical sector number PSN that reaches the last record in the last R band.That is, the position of reading information is determined, and the position that has reached after the visit is the last record position of the reality in the last R band.Under determining that the result is for the situation of negating, above-mentioned access process operation is repeated.As in R physical message band R-PFIZ, in the present embodiment, can be by utilizing about " about the physical sector number of the renewal of the starting position of indication boundary strip or the information of physics segment number (PSN) " among the physical format information UPFI that upgrades the record position of the physical format information UPFI that is recorded in the renewal in the boundary strip (border-Nei BRDI) is retrieved.

When the position of the physical sector number (or physics segment number) in being lastly recorded in last R band is found, information reproduction device from the border-reproduction is carried out in the outer position that is right after the preceding.Then, when the inboard of battery limit (BL), back BRDA by sequentially when beginning to reproduce, reach the position of last record.Then, carry out the verification of last border-outer BRDO.In write-once type information storage medium,, do not write down the not posting field of record mark and follow after the position of data leading-out zone DTLDO in the outside of above last border-outer BRDO according to present embodiment.In information reproduction device, on the not recording areas on the Write once information recording medium, do not carry out tracking, and be not recorded about the information of physical sector number PSN, therefore make and can carry out reproduction with the position after border-outer BRDO in the end.Therefore, when reaching last border-external position, access process operation and successively reproducing are handled the operation termination.

Contrast Figure 20 will describe the timing (update condition) of the content of upgrading the information among the record position management data RMD.There are five kinds of conditions that are used to upgrade the information on the record position management data RMD.

Under (condition 1a) reformed situation of medium state information (plate-like attitude) in RMD field " 0 ":

When end-of-record delimiter (being recorded in " the end position information " at rear portion (outer circumferential sides) of the border-outer BRDO of last record), there is not the renewal of executive logging location management data RMD to handle operation.

(condition 1b) when the build-in test band address of appointment in RMD field " 1 " or outside under the reformed situation in calibration tape address (interior or outer calibration tape address).

Under the border of (condition 2) appointment in RMD field " 3 "-outer BRDO start position information (the beginning physical sector number of border-outskirt) or RMZ number (open expansion RMZ number) reformed situation of open (write-once possibility) record position management band:

Under the situation of (condition 3) any one information in RMD field " 4 ", changing about following:

1) total number of unspecified R band number, opening R band number and the type R that finishes band or invisible R band number (invisible R band number)

2) the first opening R band information of number (the first open R band number)

3) the second opening R band information of number (the second open R band number)

In the present embodiment, during (passing through disk drive) carries out a series of information recording operation to the write-once type information storage medium such as HD DVD-R, do not need to upgrade RMD.For example, under the situation of record video image information, need to guarantee continuous recording.If for upgrade video image information record (image recording) in the heart record position management data RMD and carry out access control up to the position of record management data RMD, then since video image information be interrupted, so continuous recording is not guaranteed.Therefore, usually, after being terminated, just carries out the video image record renewal of RMD.If a series of video image information recording operation continues the long time, then will be shifted significantly with the rearmost position information that is included among the record position management data RMD that is recorded in the write-once type information storage medium in the position that current point in time is lastly recorded on the write-once type information storage medium.At this moment, abnormality at continuous recording center produces under the situation that information recording/reproduction device (disk drive) is forced to stop then, and " being included in the rearmost position information among the record position management data RMD " and the difference that is right after between the record position before the forced termination become undue big.As a result, danger having taken place, promptly at " being included in the rearmost position information among the record position management data RMD ", meeting the data that are right after the record position before forced termination and recover the difficulty that becomes.Therefore, in the present embodiment, below update condition added in addition.

(condition 4) (information about record position management data RMD is updated) in being recorded in last record position management data RMD " the physical sector number LRA of the last record position in the indication R band " and the difference (difference of " PSN-LRA ") between order changes during linkage record " being lastly recorded in physical sector number PSN in the position in the R band " at current point in time surpass under 8192 the situation:

Yet in above-mentioned " (condition 1b) " or " (condition 4) ", the size of the not record position (reserved area 273) in record position management band RMZ is equal to or less than 4 physical segment pieces and (under 4 * 64KB) the situation, does not carry out renewal.

Now, extension record location management band will be described.As the position that is provided with of record position management band, present embodiment has defined following three types.

1) management of the record position among data importing district DTLDI band RMZ (L-RMZ)

Find out that from Figure 16 B is clear in the present embodiment, the part of the inboard of data importing district DTLDI is used for the border-Nei BRDI corresponding to first frontier district.Therefore, shown in Figure 15 A, RMZ is set in advance in data importing district DTLDI with the management of the record position among the border-Nei BRDI that is recorded in corresponding to first frontier district band.In the inner structure of this record position management band RMZ, journal location management data RMD that can write-once 64KB byte (1 physical segment block size).

2) management of the record position among border-Nei BRDI band RMZ (B-RMZ)

In write-once type information storage medium, before reproducing the information of record, need closing of border to handle operation by a reproducer according to present embodiment.Under the situation that fresh information is recorded after the border has been closed once, new frontier district BRDA need be set.Position before this new frontier district BRDA be provided with the border-Nei BRDI.In the stage that operation is handled in closing of border, the not recording areas in state-of-the-art record location management band is closed (reserved area 273 shown in Figure 15 B).Therefore, need be provided for writing down the newly developed area (record position management band RMZ) of record position management data RMD that indication is recorded in the position of the information among the new frontier district BRDA.Shown in Figure 16 D, present embodiment is characterised in that: record position management band RMZ is set among newly-installed border-Nei BRDI.The inner structure of record position management band RMZ in this boundary strip has the identical structure with " corresponding to the record position management band RMZ (L-RMZ) of first frontier district ".In addition, the information that is included among the record position management data RMD that is recorded in this district is recorded together with relating to the record position management information that is recorded in the data among the preceding frontier district BRDA and relate to the record position management data that is recorded in the data among the corresponding frontier district BRDA.

3) management of the record position among the BRDA of frontier district band RMZ (U-RMZ)

Shown in item (2), the RMZ (B-RMZ) among border-Nei BRDI can not be set up, unless new frontier district BRDA is set up.In addition, first frontier district management band RMZ (L-RMZ) shown in (1) is unlimited, and depleted when the additional reserved area 273 that writes when being repeated, and new record location management data RMD can not be written into.In order to address the above problem, in the present embodiment,, the R band that is used for recompile record position management band RMZ realizes other interpolation thereby newly being arranged on frontier district BRDA.That is the specific R band that exists the record position management band RMZ (U-RMZ) among the BRDA of frontier district to be set up.

In addition, present embodiment is not limited to reduce the situation that the residue size of the not recording areas (reserved area 273) among the RMZ (L-RMZ) is with in the management of first frontier district, present embodiment is characterised in that: under the situation of the residue size of the not recording areas (reserved area 273) in " the record position management band RMZ (U-RMZ) in the BRDA of frontier district " that reduce " border-Nei record position management band RMZ (B-RMZ) among the BRDI " and be set up, above-mentioned " RMZ (U-RMZ) is with in the record position management in the BRDA of frontier district " can be set up.

The content that is recorded in the information among the record position management band RMZ (U-RMZ) among the BRDA of this frontier district have with the data importing district DTLDI shown in Figure 15 B in the identical in structure structure of record position management band RMZ (L-RMZ).In addition, the information that is included among the record position management data RMD that is recorded in this district is recorded together with relating to the record position management information that is recorded in the data among the preceding frontier district BRDA and relate to the record position management data that is recorded in the data among the corresponding frontier district BRDA.

In above-mentioned multiple record position management band RMZ,

1) before user data, the position of the record position management band RMZ (L-RMZ) among the data importing district DTLDI is set in advance.

Yet, in the present embodiment,

2) management of the record position among border-Nei BRDI band RMZ (B-RMZ); With

By information recording/reproduction device (providing extensively) is set rightly according to user data record (additional writing) state, therefore, these bands are known as " expansion (type) record position management band RMZ ".

Not recording areas (reserved area 273) in the record position management band RMZ of current use is equal to or less than the physical sector piece (under 15 * 64KB) the situation, can provide the setting of the record position management band RMZ (U-RMZ) among the BRDA of frontier district.The size of record position management band RMZ when (U-RMZ) is set among the BRDA of frontier district is defined as the size (128 * 64KB), and this size is defined as being exclusively used in the R band of record position management band RMZ of 128 physical segment pieces.

In the write-once type information storage medium according to present embodiment, becoming to be provided with above-mentioned three types record position management band RMZ, therefore, allows to exist a large amount of record position management band RMZ on a Write once information recording/storage medium.Therefore, in the present embodiment,, carried out following processing operation for the ease of state-of-the-art record location management data RMD record position is retrieved:

1) under the situation that record position management band RMZ newly is set, state-of-the-art record location management data RMD is overwritten in and is used among the present record position management band RMZ, is not used among the present record position management band RMZ thereby do not allow not recording areas to be present in.Like this, becoming can identification record location management band be currently to be used or to be set in the reposition.

2) when record position management band RMZ newly is provided with, be recorded among the RMD dubs RMZ about the Copy Info 48 of state-of-the-art record location management data RMD.Like this, can easily retrieve the record position management band RMZ position of current use.

In according to the write-once type information storage medium of present embodiment, allow to exist in a large number not recording areas.Yet in a reproducer, DPD (differential phase detection) technology is used to the track displacement detection, therefore, can not carry out tracking in the recording areas.Therefore, before reproducing above-mentioned write-once type information storage medium, need to carry out closing of border and handle operation, thereby recording areas does not exist by this reproducer.

To the reference number mode contents of reference number recording strip RCZ record be elaborated.In current dvd standard, " 8/16 modulation " system that 8 bit data is converted to 16 raceway groove positions is used as modulating system.As being recorded in the information storage medium of modulation back, utilize repeat pattern " 00100000100000010010000010000001 " as the reference number pattern of channel bit pattern.Compare with this pattern, in the present embodiment, utilized the ETM modulation that 8 bit data is modulated to 12 channel bit, the restriction of RLL (1,10) running length is provided.In addition, the PRML technology is used to the DTLDI from the data importing district, data field DTA, and data leading-out zone DTLDO and mesozone MDA carry out signal reproduction.Therefore, the reference number pattern that above-mentioned modulating rule and the most desirable PRML of being used for detect need be set.According to the restriction of RLL (1,10) running length, " 0 " minimum value " d=1 " continuously is set, be " 10101010 " repeat pattern.Suppose from sign indicating number " 0 " to be " T " to next distance of closing on sign indicating number, relevant distance of closing on " 1 " obtains " 2T " in the last surface model.In the present embodiment, for acquired information storage medium high density, as previously mentioned, be recorded in MTF (modulation transfer function) the cutoff frequency characteristic (being present in the information recording/regenerating unit 141 shown in Figure 8) that approaches bare headed object lens in the information storage medium from the reproducing signal of " 2T " repeat pattern (" 10101010 "); Like this, be difficult to obtain degree of modulation (signal amplitude).Therefore, " 2T " repeat pattern reproducing signal has been used as under the tuning reproducing signal situation of circuit of information reproduction device or information recording/reproduction device (for example, initialization and optimize tap coefficient), and noise effect is obvious, and stability degenerates.Therefore, for foundation RLL (1,10) running length restriction modulation back signal, wish to utilize to have high density " 3T " pattern to carry out circuit tuning.

Consider under reproducing signal numeral summing value (DSV) situation, DC absolute value and " 1 " and and then continuous " 0 " number direct proportion increase between the next one " 1 ", recruitment is added in the DSV value of front and then.Polarity negate when being " 1 " of the DC value of this increase.Therefore, as a kind of method that the DSV value is set for " 0 ", channel bit pattern with continuous reference number is " 0 " and then, the DSV value of ETM modulation back 12 channel bit patterns is changed to " 0 ", thus, be significantly improved by an odd number reference number Design Pattern degree of freedom is set, " 1 " of generation is presented in the 12 channel bit patterns after the ETM modulation; Compensated the DC composition in the one group of reference symbol that comprises next group.Therefore, in the present embodiment, after the ETM modulation, the numeral " 1 " that is presented in the reference symbol that comprises 12 channel bit patterns is changed to odd number.

In the present embodiment, in order to obtain high density, utilized sign edge recording technique, wherein, the boundary position of the position of " 1 " and record mark or protruding/recessed is consistent.For example, and then under the repeat pattern situation of " 3T " (" 100100100100100100100 "), such a case takes place, and according to recording status or the initial generation state of grasping, record mark or protruding/recessed length and mark and gap length between the pit have tiny different each other.Utilize under the PRML detection technique situation, it is very important that the reproducing signal level becomes.As previously mentioned,, need tiny different parts in the collating circuit mode, stablize and the accurate signal detection with activation even under the different situation of gap length between this record mark or protruding/recessed length and this mark and the pit.Therefore, it is the interval of " 3T " that the reference number of stationary tuning circuit has length, as " 3T " long record mark or protruding/recessed, thereby improves the accuracy of stationary tuning circuit.Like this, if be included as a reference number pattern according to present embodiment " 1001001 " pattern, record mark or protruding/recessed has length " 3T " so, and always is set up at interval.

In addition, except high-density mode, the tuning non-dense set state that also needs of circuit.Therefore, consider such fact, non-dense set state (the wherein continuous and frequent state that produces " 0 ") is created in ETM modulation back " 1001001 " pattern by the part from the eliminating of 12 channel bit patterns, the numeral " 1 " that produces is set in the odd number, for the reference number pattern, " 100100100000 " are obtained as light state, shown in Figure 24 A, 24B, 24C and 24D.For guaranteeing that modulation back channel bit pattern is produced as pattern,,, before modulation, need data word to be set to " A4h " when utilizing one specially with the modulometer of H form although do not show.It is consistent with data markers " 164 " (decimal symbol) to be somebody's turn to do " A4h " (16 system symbol) data.

The particular data how following basis produces top data conversion rule is elaborated.At first, data markers " 164 " (equaling " 0A4h ") is set in the aforementioned data frame structure master data " D0 is to D2047 ".Then, Frame 1 is to the in advance pre-scrambling of the initial preset value " 0Eh " of Frame 15 quilts, and Frame 16 is to the in advance pre-scrambling of the initial preset value " 0Fh " of Frame 31 quilts.If use pre-scrambling in advance, when aforementioned data transformation rule utilization scrambling, scrambling is used to duplicate, and data markers " 164 " (equaling " 0A4h ") (when scrambling was used to duplicate, raw mode was reproduced) occur with reality.When pre-scrambling applies to all reference numbers, its each constitute by 32 physical sectors, DSV control is not set up, like this, can not be in advance only to Frame 0 pre-scrambling.After should using up the scrambling of front, if modulate, the pattern that Figure 24 A, 24B, 24C and 24D show is recorded in the information storage medium.

Among the present invention, the address information in recordable type (but rewriting type or write-once type) information storage medium is through the prior record of wobble modulation quilt.Present embodiment is characterised in that: ± 90 degree (180 degree) phase modulation (PM) is used in the wobble modulation system, uses NRZ (non-return-to-zero coding) method, according to the prior recording address information of information storage medium.To specify with reference to Figure 21.In the present embodiment, according to address information, this 1 address bit (as address mark) district 511 is by representing that frequency and amplitude/phase all are complementary in 511 any positions, 1 address bit district four hunting periods.Continue under the identical address bit situation, keep homophase (" warning triangle " shown in Figure 21 expression part) in the separatrix in 1 address bit district 511 partial continuous.Weave mode negate (phase place 180 degree change) is taken place by under the negate situation in address bit.

In information recording/reproduction device wobble signal detector shown in Figure 8 unit 135, above position, 511 separatrix, address bit district (" warning triangle " shown in Figure 21 expression position) and can be detected simultaneously as the slotting position of position, 1 separatrix hunting period.Although be not presented in the wobble signal detector unit 135, comprise a PLL (phaselocked loop) circuit, PLL be used for position, 511 separatrix, top address bit district and slotting position 512 both synchronously.If this position, 511 separatrix, address bit district or this slotting position change, this wobble signal detector unit 135 will be no longer synchronous, can not carry out swinging signal accurately and reproduce (reading).The interval of closing on slotting position 512 is used as fluting interval 513.Along with this close of interval 513 natures of slotting, adopt the PLL circuit to be easy to obtain synchronously, can carry out swinging signal reproduction (reading the information that comprises) stably.

Obviously find out as Figure 21, if it is use 180 ° of phase modulation methods of 0 ° of phase shift or 180 °, then should fluting 513 consistent at interval with a hunting period.As a kind of wobble modulation method, although being used to change amplitude modulation (amplitude modulation(PAM)) system of amplitude of fluctuation can be attached at an easy rate in the cut on this information storage medium surface or dust influence, above phase modulation (PM) compare and be attached hardly in the cut on this information storage medium surface or dust influence because phase change rather than signal amplitude are detected in the top phase modulation (PM).As another modulating system, in the FSK that is used for changing frequency (frequency shift keying) system, fluting interval 513 is the same with hunting period long, and the locking phase of PLL circuit reaches being difficult to.Therefore, as present embodiment, when address information is write down by the swaying phase modulation, can obtain useful effect, fluting narrows down at interval, reaches the synchronous of swinging signal easily.

As shown in figure 21, although binary data " 1 " or " 0 " are assigned to 1 address bit district 511, Figure 22 has shown the method for allocation bit position in the present embodiment.Shown in Figure 22 left side, a kind of weave mode is used as NPW (normal state phase swing), and data " 0 " are set up, and this pattern at first swings to excircle from a swing starting position.Shown in the right, a kind of weave mode that at first swings to inner periphery from a swing starting position is used as IPW (inverted wobbles), and data " 1 " are set up.

Shown in Fig. 7 B and 7C, the width W g in pre-groove district 11 is greater than the width W l in groove bank district 12.Therefore, a problem produces, and promptly the detection signal level of swing detection signal reduces, and the C/N ratio is lowered.Opposite with prior art, modulator zone is wider than in non-modulation district, thereby the stability of wobble detection signal is enhanced.

Contrast Figure 30 A is described swinging address form in the H form among the embodiment to 30E.Shown in Figure 30 B, the physical segment piece comprises seven physical segments 550 to 556.Shown in Figure 30 C, each in the physical segment 550 to 556 comprises 17 wobble data unit 560 to 576.In the wobble data unit 560 to 576 each comprises: modulator zone comprises one of swing synchronization zone 580, modulation beginning label 581 and 582, swinging address district 586 and 587; With non-modulation district 590 and 591, comprise N continuous PW.Figure 23 A shows the non-modulation district of each wobble data unit and the ratio of modulator zone to 23D.In each of 23D, modulator zone 598 comprises 16 swings at Figure 23 A, and non-modulation district 593 comprises 68 swings.According to present embodiment, modulator zone 598 is wider than in non-modulation district 593.Because non-modulation district 593 is wide, thus can by the PLL circuit use signal from non-modulation district 593 with the swing detection signal, write clock or reproduce clock stable ground synchronously.Synchronously stable in order to carry out, expectation is with the minimum twice of being arranged to modulator zone 598 of the width in non-modulation district 593.

Use the address information recording form of wobble modulation to be described in the write-once type information storage medium H form according to the present invention.Use the address information method to set up of wobble modulation to be characterised in that " be distributed in the synchronization frame length 433 and carry out " in the present embodiment.A sector is made up of 26 synchronization frames, and the ECC piece is made of 32 physical sectors.Like this, the ECC piece is made up of 32 physical sectors, is made up of the individual synchronization frame in 832 (=26 * 327).

Wobble data is divided into 17 WDU (wobble data unit) respectively, based on physical segment * section.From top formula, clearly, 7 synchronization frames are set to respectively in the wobble data length.Like this, a physical segment is made up of 17 wobble data unit, and 7 physical segment length are adjusted to and meet a data segment, length, thereby is easy to distribute the synchronization frame boundary line, detects synchronous code in the scope that comprises protected location 442 to 468.

Wobble data unit #0560 comprises to each of #11 571: the modulator zone 598 of 16 swings; The non-modulation district 592 to 593 of 68 swings, as Figure 23 A to shown in the 23D.Present embodiment is characterised in that, for a modulator zone, non-modulation district 592 and 593 dutycycle are very big.In non-modulation district 592 and 593, always swing with predeterminated frequency in trench area or groove bank district, like this, utilize non-modulation district 592 and 593, use a PLL, when the record reference clock when writing a record mark or being used for new record in information storage medium, can be stably to reference clock sampling (generation).Like this, in the present embodiment, obviously improve, thereby improved sampling (generations) precision significantly the record reference clock for the dutycycle of a modulator zone 598 non-modulation districts 592 and 593, and the significant stability that improves sample (generation).That is to say, carry out under the phase modulation (PM) situation in the swing that if for wave shaping, reproducing signal is by a bandpass filter, such phenomenon occurs: the detection signal waveform amplitude after the shaping has reduced in the front and back of phase change.Therefore, such problem is arranged: because phase modulation (PM), when the phase change dot frequency increased, wave-shape amplitude changes to be increased, above clock sampling precision degree reduce; On the contrary, if modulator zone phase change dot frequency is low, when swinging address information detected, displacement took place easily.Like this, in the present embodiment, obtain so useful effect, promptly cause that by phase modulation (PM) modulator zone and non-modulation district form, the dutycycle in non-modulation district has improved, thereby has improved top clock sampling precision.

In the present embodiment, modulator zone and non-modulation district switching position can be predicted in advance.Like this, selected the passing to from non-modulation district of reproducing signal obtains signal, can sample to top clock from detection signal.In addition, according to present embodiment, recording layer 3-2 is made up of the organic dyestuff recording materials of service recorder principle, use in " 3-2) explanation of total fundamental characteristics concerning the organic dyestuff recording sheet in the present embodiment " under pre-groove shape/width situation that " 3-2-D] fundamental characteristics of relevant pre-groove shape/width " in the present embodiment describe, be difficult to obtain swinging signal relatively.Under the circumstances, as mentioned above,, can improve the reliability of wobble signal detection by non-modulation district 590 of obvious increase modulator zone and 591 dutycycles.

In non-modulation district 592 and 593 and modulator zone 598 intersections, an IPW district adopts 4 swings or 6 swings as modulator zone 598 modulation beginning label is set.In the wobble data part shown in Figure 23 C and 23D, carry out batch operation, like this, detect as after swinging the IPW district of beginning label specifically, swinging address district (address bit #2 is to #0) is at once by wobble modulation.Figure 23 A and Figure 23 B shown respectively with following Figure 24 C in show content among the swing synchronization zone 580 corresponding wobble data unit #0560; And Figure 23 C and 23D shown separately with Figure 24 C in display segment information 727 to the corresponding wobble data location contents of wobble data part of CRC sign indicating number 726.Figure 23 A and 23C have shown respectively and following modulator zone main positions 701 corresponding wobble data unit; Figure 23 B and 23D have shown respectively and modulator zone backseat 702 corresponding wobble data unit.Shown in Figure 23 A and 23B, in swing synchronization zone 580, the IPW district has disposed 6 swings, and the NPW district that IPW surrounds has disposed 4 swings.Shown in Figure 23 C and Figure 23 D, IPW district and all address bit district #2 of wobble data part have disposed 4 swings respectively to #0.

Figure 24 A has shown the relevant embodiment of swinging address information data structure in the write-once type information storage medium to 24D.In order to contrast, Figure 24 A has shown the data structure of write-once type information storage medium swinging address information.Figure 24 A has shown two relevant embodiment of swinging address information data structure in the write-once type information storage medium with Figure 24 C.

In swinging address district 610,3 address bits have disposed 12 swings (with reference to Figure 21).That is to say that each address bit is swung continuously by four and formed.Like this, to have adopted address information serve as the structure that the basis is assigned with 3 * 3 address bits to present embodiment.Swinging address information 610 is concentrated when being recorded in information storage medium one position, is difficult to detect all information when dielectric surface adheres to dust or cut.In present embodiment, can obtain useful effect: swinging address information 610 is that the basis is assigned with 3 * 3 address bits in arbitrary in this wobble data unit 560 to 576 (12 swings); One group of information is that the basis is recorded with three address bit integral multiple square address bits, even owing to dust or cut reason are difficult to detect under certain positional information situation, also can carry out another information of information and detect.

As mentioned above, this swinging address information 610 is assigned with, this swinging address information 610 is disposed fully with 1 * 1 physical sector basis, thereby can determine the address information in physical segment * segment base plinth, like this, when each information recording/reproduction device provides visit, can determine the current location of physical segment unit.

In the present embodiment, utilized the NRZ technology as shown in figure 21, like this, in swinging address district 610 4 continuously in the swing phase place can not change.Swing synchronization zone 580 is configured with this characteristics.That is to say that the weave mode that is difficult in the swinging address information 610 produce is set up according to swing synchronization zone 580, thereby, be easy to that distribution locations is carried out in this swing synchronization zone 580 and determine.The present embodiment characteristics are: swing this swinging address district 586 and 587 that forms for an address bit continuously by 4 times, be provided with an address bit length that is different from 4 wobble length in these 580 a certain positions, swing synchronization zone.That is to say, shown in Figure 23 A and 23B, in this swing synchronization zone 580, the district (IPW district) that swing position is set as " 1 " is set to a weave mode and changes, and this patterns of change can for example " → four swings of six swings are swung for → six times " partly not take place shown in Figure 23 C and 23D at wobble data.When changing the ad hoc approach that the method for swinging is used to be provided with weave mode as mentioned above, this weave mode partly is difficult to produce for swing synchronization zone 580 wobble datas, can obtain following beneficial effect:

1) swing detection (swinging signal judgement) can stably continue to carry out, and can not make the relevant PLL distortion of slotting position 512 (Figure 21) of swing, and this swing detection is carried out in this wobble signal detector unit 135 shown in Figure 8; And

2) owing to the variation of the address bit boundary position that produces in this wobble signal detector unit 135 shown in Figure 8, swing synchronization zone 580 and modulation beginning label 561 and 562 can easily be detected.

To shown in the 23D, present embodiment is characterised in that as Figure 23 A: this swing synchronization zone 580 is by constituting 12 hunting periods, and the length setting of this swing synchronization zone 580 is consistent with three address bit length.Like this, all modulator zones among the wobble data unit #0 560 (being used for 16 swings) are configured in this swing synchronization zone 580, thereby have improved the detection easness of swinging address information 610 starting positions (the distribution addresses of swing synchronization zone 580).This swing synchronization zone 580 is configured in the first wobble data unit of a physical segment.Like this, can obtain useful effect: this swing synchronization zone 580 is configured in the starting position of a physical segment, and thus, by only detecting this 580 positions, swing synchronization zone, the boundary position of this physical segment can easily be sampled.

Shown in Figure 23 C and 23D, at wobble data unit #1 561 to #11 571, this IPW district (with reference to Figure 22) is configured the modulation beginning label of position to start with, and this is distinguished at address bit #2 to #0.In the non-modulation district 592 and 593 that is formed at anterior locations that this NPW waveform is continuous.Like this, this wobble signal detector unit 135 shown in Fig. 8 detect one from NPW to the IPW turning point, and to this modulation beginning label position sampling.

As a reference, but the theing contents are as follows of swinging address information 610 in a kind of rewriting type information storage medium shown in Figure 24 A:

1) the physical segment address 601

--the information (in information storage medium 221 one-periods) of physics segment number in the-expression track;

2) band address 602

The numbering of band in the information storage medium 221 is represented in---this address; And

3) parity information 605

When reproducing in---this swinging address information 610, this information is set for error-detecting; Reserved area information 604 is added to the address bit unit respectively to 14 bit address positions of band address 602; In order to judge that adding the result is even number or odd number, is provided with a display.The value of this parity information 605 is set up, and like this, according to the 15 bit address position summations that comprise address parity information 605 address bits, address location is got or the result that obtains becomes " 1 ".

4) unified district 608

---as previously mentioned, each wobble data unit is configured, and forms the non-modulation district 592 and 593 of modulator zone 598, the 68 times swing of 16 swings, and for modulator zone 598, non-modulation district 592 and 593 dutycycle increase significantly.In addition, by increasing the dutycycle of non-modulation district 592 and 593, reproduce reference clock or the sampling accuracy of record reference clock and degree of stability and all improved significantly.This NPW district links to each other fully with unified district 608, is used as the non-modulation district with unified phase place.

Figure 24 A has shown the address bit quantity in every of the above-mentioned information.As mentioned above, this swinging address information 610 is divided into 3 * 3 address bits, and the item of information that separates is dispensed on each wobble data unit.Even because burst error takes place for the dust or the cut of information storage medium surface attachment, this mistake is very low in the possibility of mutually different wobble data cell propagation.Therefore, the object of the invention is exactly for the quantity of different wobble datas unit that will comprise as the record identical information reduces to minimum, and the turning point and the intersection position, wobble data unit of item of information is complementary.Like this, even because burst error takes place for the dust or the cut of information storage medium surface attachment, information specific can not be read, and by reading and recording another information in another wobble data unit, has improved the reliability of swinging address information regeneration.

To shown in Figure 24 D, present embodiment is characterised in that as Figure 24 A: unified district 608 and 609 is configured in the end of this swinging address information 610.As mentioned above, in unified district 608 and 609, trochoidal wave form is the NPW shape, and like this, this NPW remains in the continuous wobble data unit of three reality continuously.Can obtain useful effect: this wobble signal detector unit 135 shown in Figure 8 utilizes this characteristics, the position that retrieval keeps length continuously for three wobble data unit 576NPW, thereby these unified district 608 position samplings that can easily be provided with, and utilize positional information to detect the starting position of this swinging address information to these swinging address information 610 ends.

In the multiple address information shown in Figure 24 A, in adjacent track, physical segment address 601 and the same value of band address 602 expressions, wherein, numerical value changes between the adjacent orbit in groove track address 606 and groove bank track address 607.Therefore, uncertain position district 504 appears in the district that groove track address 606 and groove bank track address 607 be recorded.For reducing the frequency of this uncertain position, in the present embodiment, for groove track address 606 and groove bank track address 607, use Gray code explicit address (number).Gray code is represented such sign indicating number, and when original value only changed " 1 ", any position of sign indicating number after the conversion changed " 1 ".Like this, the frequency of uncertain position reduces, and except the swing detection signal, can detect and make from the record mark reproducing signal stable and carry out.

Shown in Figure 24 B and Figure 24 C, except in the write-once type information storage medium, and but in the rewriting type information storage medium, swing synchronization zone 580 is set at the physical segment starting position, thereby can detect the boundary position between this physical segment starting position or the adjacent segment easily.Type identification information 721 expressions are as the distribution locations in the 580 swing synchronous mode physical segments of above-mentioned swing synchronization zone in the physical segment shown in Figure 24 B, can dope the distribution locations in another modulator zone 598 in the same physical segment in advance thus, and prepare to carry out modulator zone detection next time.Like this, can obtain useful effect: the accuracy of modulator zone input (differentiation) is improved.Especially,

When type identification information 721 is changed to " 0 " on the physical segment, show shown in Figure 26 B that all items of information are set in the main positions in the physical segment, show that also main positions shown in Figure 26 D and backseat mix; And

When type identification information 721 was changed to " 1 " on the physical segment, shown in Figure 26 C, all items of information were set at backseat in the physical segment.

Another embodiment relevant according to the foregoing description by utilizing the combination of type identification information 721 in a swing synchronous mode and the physical segment, can show the distribution locations of a physical segment modulator zone.By utilizing the combination of aforementioned two types of information, Figure 26 B can be expressed out to the type more than three kinds or three kinds of modulator zone allocation model shown in Figure 26 D, and the plurality of distribution pattern of this modulator zone can be provided.When the foregoing description showed the distribution locations that comprises in the physical segment modulator zone of swinging synchronization zone 580 and physical segment type identification information 721, the present invention was not limited to this.For example, as another embodiment, this swing synchronization zone 580 and this physical segment type identification information 721 can be represented the distribution locations of modulator zone in the next physical segment.Like this, carry out can obtaining useful effect under the continuous tracking situation along groove: the distribution locations in the next physical segment modulator zone can determine to have very long setup time to be used to detect modulator zone in advance.

Any in level number information 722 expression single-surface single-layers in the write-once type information storage medium shown in Figure 24 B or the single-surface double-layer recording layer.This information shows:

" L0 layer " is when being set to " 0 ", under single-surface single-layer medium or the single-surface double-layer medium situation (being positioned at the anterior layer of laser beam incident face one side); And

When establishing set, " the L1 layer " of single-surface double-layer (the back layer of looking from laser beam incident face one side).

The allocation order of physical segment order information 724 expression same physical section piece related physical sections.Find out with Figure 24 A is apparent in view, but the starting position of this physical segment order information 724 is consistent with the starting position of physical segment address 601 in the rewriting type information storage medium in the swinging address information 610.But this physical segment order information position is adjusted and meets the rewriting type medium, can improve the compatibility between the media type thus, share or simplify the address detected control program of use swinging signal in the information recording/reproduction device, but adopt rewriting type information storage medium and write-once type information storage medium in this equipment.

Figure 24 B data presented sector address 725 usefulness numerals have been described the data segment address information.As has been described, in the present embodiment, an ECC piece is made up of 32 sectors.Therefore, 5 in minimum effective 5 sector numbers with the setting of adjacent ECC BOB(beginning of block) position are consistent in the physical sector number that special ECC BOB(beginning of block) position is provided with.One physical sector number has been set up under the situation, and an ECC piece is provided with in the physical sector number of sector minimum effective 5 and is made as " 00000 ", in the identical ECC piece in the physical sector number of all sectors minimum effective value more than 6 or 6 consistent each other.Therefore, minimum effective 5 bit data of physical sector number are deleted in the identical ECC piece sector, only minimum effective 6 or 6 are defined as an ECC block address (or ECC block address number) with the upper address information that obtains of sampling.Consistent by the data segment address 725 (or physical segment piece information) that wobble modulations writes down in advance with above-mentioned ECC block address.Like this, because wobble modulations when positional information is represented by the data segment address in the physical segment piece, can obtain useful effect: compare when being shown by physical sector number with the address, data volume reduces on 5 * 5 bases, when having simplified visit to the testing process of current location.

CRC sign indicating number 726 shown in Figure 24 B and Figure 24 C is to be configured in the CRC sign indicating number (cyclic redundancy check (CRC)) of physical segment type identification information 721 in the 24 bit address positions of data segment address 725, or is configured in the CRC sign indicating number of segment information 727 in 24 address bits of physical segment order information 724.Even a wobble modulation signal is read by the mistake of part, this signal can be by the correction of these CRC sign indicating number 726 parts.

In the write-once type information storage medium, the district relevant with 15 address bits is configured to 609, one NPW districts, unified district and is configured in fully in 5 wobble data unit 12 to 16 (modulator zone 598 does not exist).

The physical segment block address 728 that Figure 24 C shows is the group of addresses that are used for each physical segment piece, and this physical segment piece is configured to a unit from 7 physical segments, and first section relevant physical segment block address of piece is set as " 1358h " among the data importing district DTRDI.The numerical value of this physical segment block address is comprised data field DTA by adding in proper order last physical segment piece of data leading-out zone DTLDO from the data importing district DTLDI first physical segment piece one by one.

The order of each physical segment in this physical segment order information 724 expressions one physical segment piece, first physical segment is made as " 0 ", and last physical segment is made as " 6 ".

Embodiment shown in Figure 24 C is characterised in that: physical segment block address 728 is set at the position before the physical segment order information 724.For example, as in RMD field 1, address information is usually by this physical segment block address control.According to these management information, provide under the default section block address visit situation, at first, this wobble signal detector unit 135 shown in Figure 8 detects the position of this swing synchronization zone 580 of Figure 24 C demonstration, then, and then the information of these 580 pairs of records in swing synchronization zone is decoded in proper order.The physical segment block address appears under the situation of position before this physical segment order information 724, and at first, this physical segment block address is decoded, need not decode to this physical segment order information 724, just can judge whether to exist to preset the physical segment block address.Like this, can obtain useful effect, use the visit capacity of swinging address to be improved.

Segment information 727 is made up of a type identification information 721 and a reserved area 723.The distribution locations of the type identifying information 721 expression physical segment modulator zones.The value of the type identifying information 721 is set as under the situation of " 0b ", the state that the described Figure 26 B in expression back shows.This information is set as under " 1b " situation, the state that the expression described Figure 26 C in back or Figure 26 D show.

Present embodiment is characterised in that: and then type identification information 721 is set at and swings after the synchronization zone 580 shown in Figure 24 C.As mentioned above, at first, wobble signal detector unit 135 shown in Figure 8 detects the position that Figure 24 C shows swing synchronization zone 580, then, and then swings after the synchronization zone 580, and the information of record is carried out the order decoding.Therefore, and then type identification information 721 is set at after this swing synchronization zone 580, thus, can carry out the inspection of physical segment modulator zone distribution locations immediately.Like this, utilizing swinging address can obtain high speed access handles.

In the present embodiment, use the H form, therefore, the predetermined value of swinging signal is set to 697kHz.

Now, will the example of the measurement of the maximal value (Cwmax) of carrier level of swing detection signal and minimum value (Cwmin) be described.

In the write-once type storage medium according to present embodiment, CLV (constant linear velocity) register system is used, and therefore, the swaying phase between the adjacent orbit changes according to orbital position.Under the consistent each other situation of the swaying phase between the adjacent orbit, the carrier level of swing detection signal is maximized, and obtained as maximal value (Cwmax).In addition, when the swaying phase between the adjacent orbit when anti-phase, the swing detection signal level is owing to crosstalking of adjacent orbit is minimized, and as minimum value (Cwmin) and obtained.Therefore, along track from its inner periphery when excircle is carried out tracking, the size of the carrier wave of detected swing detection signal was fluctuateed in 4 orbital periods.

In the present embodiment, based on 4 * 4 track wobble detection carrier signals, and measure maximal value (Cwmax) and minimum value (Cwmin) based on 4 * 4 tracks.Then, at #03,30 pairs or more maximal value (Cwmax) and minimum value (Cwmin) are stored.

Next, at #04, formula below utilizing calculates amplitude peak (Wppmax) and minimum radius (Wppmin) from the mean value of maximal value (Cwmax) and minimum value (Cwmin).

In the formula below, R represents the terminating resistor value of spectrum analyzer.Now, will describe from the formula of Cwmax and Cwmin conversion Wppmax and Wppmin.

In the dBm system of units, 0dBm=1mW is defined as benchmark.When power Wa=1mW, it is as follows to obtain voltage amplitude Vo:

Wao＝Ivo＝Vo×Vo/R＝1/1000W。

Therefore, Vo=(R/1000) ^1/2Obtained.

Next, amplitude of fluctuation Wpp[V] and the carrier level Cw[dMb that monitors by spectrum analyzer] between relation as follows.Here, Wpp represents sine wave, and therefore, when amplitude was converted into actual effective value, it was followed:

Wpp-rms＝Wpp/(2×2 ^1/2)

Cw＝20×log(Wpp-rms/Wo)[dBm]

Therefore, Cw=10 * log (Wpp-rms/Vo) ²Be established.

When the log of above-mentioned formula was converted, it was followed:

(Wpp-rms/Vo) ²

＝10 ^(Cw/10)

＝{〔Wpp/(2×2 ^1/2)〕/Vo} ²

＝{Wpp/(2×2 ²)/(R/1000) ^1/2} ²

＝(Wpp ²/8)/(R/1000)

Wpp ²

＝(8×R)/(1000×10 ^(Cw/10))

＝8×R×10 ^(-3)×10 ^(Cw/10)

＝8×R×10 ^(Cw/10)(-3)

Wpp＝{8×R×10(Cw/10 ^(-3))} ^1/2 (61)

As mentioned above, present embodiment has been realized following beneficial effect:

1) is set to 0.1 or more about ratio as the minimum value (Wppmin) of the amplitude of the swing detection signal of (I1-I2) pp of track displacement detection signal, thereby compare with the dynamic range of track displacement detection signal, obtained enough big swing detection signal.As a result, can obtain the swing detection signal detection accuracy significantly.

2) ratio between the minimum value (Wppmin) of the amplitude of maximal value of the amplitude of swing detection signal (Wppmax) and swing detection signal is set to 2.3 or littler, thus wobble detection signal and can be stably by the appreciable impact of crosstalking from the swing of adjacent orbit.

3) value of the result's who obtains by swing detection signal square wave is shaped NBSNR is assigned to and is equal to or greater than 26dB, thereby the stable oscillation signal with high C/N ratio can be assigned with, and the accuracy of detection of swinging signal can be enhanced.

In the write-once type information storage medium according to the embodiment of the invention, a record mark is formed at trench area, has adopted the CLV register system.Like this, as mentioned above, the swing slotting position is shifted between adjacent orbit, like this, is easy between the adjacent swing along with the swing reproducing signal disturbs.In order to eliminate this influence, in the present embodiment, invent and use so that modulator zone is shifted, modulator zone can be not overlapped between adjacent orbit like this.

Especially, as shown in figure 25, main positions 701 and backseat 702 are set to the distribution locations of modulator zone.Basically, suppose distribute fully in the main positions after, the partly overlapping position of modulator zone has appearred between the adjacent orbit, adopted a kind of this modulator zone part to be changed to backseat 702.For example, among Figure 25, when trench area 505 modulator zones are set to main positions, the modulator zone of the modulator zone in adjacent trenches district 502 and trench area 506 each other the part overlapping.Like this, the modulator zone of this trench area 505 is moved to this backseat.Like this, can obtain useful effect:, can reproduce a swinging address stably by avoiding the interference between the reproducing signal adjacent orbit modulator zone in the swinging address.

By exchanging distribution locations in the identical swings data cell, concrete main positions and backseat that modulator zone is relevant are set up.In the present embodiment, non-modulation district dutycycle is set up the dutycycle that is higher than modulator zone, like this, only carries out very little distribution and change in the identical swings data cell, just can exchange main positions and backseat.Especially, shown in Figure 23 A and Figure 23 C, in main positions 701, modulator zone 598 is dispensed on the starting position of a wobble data unit.Shown in Figure 23 B and 23D, in backseat 702, modulator zone 598 is configured in the position of one centre after partially in the wobble data unit 560 to 571.

In the coverage of main positions shown in the 23D 701 and backseat 702, that is, the scope that main positions or backseat are kept continuously is defined in the scope of physical segment in the present embodiment as Figure 23 A., that is to say to shown in the 26D as Figure 26 B, provide same physical section modulator zone three types of (polytype) allocation models.When determining the allocation model of physical segment modulator zone in the information of wobble signal detector unit 135 from physical segment type identification information 721 as shown in Figure 8, the assignment information of another modulator zone 598 can be predicted in advance in the same physical section.As a result, can obtain useful effect: can prepare and carry out the detection of next modulator zone, like this, can improve the degree of accuracy of input (judgement).

Figure 26 B has shown the distribution diagram of wobble data unit in the physical segment, and wherein, the number of every frame delineation is represented wobble data unit number in the same physical section.The 0th wobble data unit is counted as a synchronous field 711, as represented at first row.The swing synchronization zone is present in the modulator zone of this synchronization field.The the 1st to the 11st wobble data unit is used as an address field 712.Address information is recorded in and is included in these address field 712 modulator zones.In addition, in the 12nd to the 16th wobble data unit, all weave modes are formed at a NPW and unify field 713.

Represent that as Figure 26 B, 26C and the described mark of 26D " P " modulator zone is set to the main positions of wobble data unit; Mark " S " expression modulator zone is set to the backseat of wobble data unit.Mark " U " expression wobble data unit pack is contained in the unified field 713, does not have modulator zone.One allocation model of the modulator zone shown in Figure 26 B represents that all districts of physical segment are set to main positions; Modulator zone one allocation model shown in Figure 26 C represents that all districts of physical segment are set in the backseat.In Figure 26 D, main positions and backseat are blended in the same physical section; One modulator zone is set to the from the 0th to the 5th each main positions of wobble data unit, and a modulator zone is set at the from the 6th to the 11st each backseat of wobble data unit.Shown in Figure 26 D, obtain a district according to adding a synchronous field 711 and an address field 712, main positions and backseat are divided into two parts about this district, thus, can well avoid the overlapping of adjacent orbit modulator zone.

Now, will a kind of method that writes down the aforementioned data segment data be described according to physical segment or as mentioned above by the physical segment piece of the prior recording address information of wobble modulations.Data are recorded in record bunch unit, but this unit is as the unit of continuously record data in rewriting type information storage medium and write-once type information storage medium.Because bunch form as the record of rewriting unit by one or more data segments, thereby, for the identical information storage medium, can be easy to carry out the hybrid recording process.Low volume data often be rewritten repeatedly PC data (PC file) and each mass data by continuous recording AV data (AV file).That is to say that for the data that personal computer uses, the data of relatively small amount are often repeatedly rewritten.Therefore, minimize rewriting or the additional data cell that writes, obtain a kind of recording method of suitable PC data by setting.In the present embodiment, an ECC piece is made up of 32 physical sectors.Like this, by in the data segment unit that includes only an ECC piece, rewriteeing or additional writing, obtain effectively to rewrite or the additional minimum unit that writes.Therefore, can obtain structure in the present embodiment as the interrecord structure that is fit to PC data (PC file), in this structure, but one or more data segment is included in the record bunch of expression rewriting unit or additional writing unit.In AV (audio frequency and video) data, need continuous a large amount of video image information and the acoustic informations of record, smooth and any problem can not be arranged.Like this, continuous recording data by co-registered as a record bunch.When the AV data recording, when the random shift amount, the data segment structure, or data segment attribute etc. mutually during handover configurations one record bunch, needs the plenty of time to be used for hand-off process according to the basis of data segment * section, is difficult to carry out continuous recording process.In the present embodiment, (attribute or random shift amount are constant for same format, do not insert special information between the data segment) data segment when being provided with continuously, by disposing a record bunch, provide a kind of suitable AV data to be used for the record format of continuous recording mass data.In addition, can obtain simplified structure in a kind of record bunch, and the record control circuit that obtains simplifying and reproduce detector circuit, the cost of information recording/reproduction device or information reproduction device can be reduced.Data segment (except the extended protection field 528) is in full accord by the data structure of the data structure of continuously arranged record bunches 540 and read-only type information storage medium and write-once type information storage medium in the record bunch.Like this, a kind of shared data structure is provided for all information storage mediums, no matter be read-only type, but write-once type or rewriting type like this, have disposed the compatibility of medium.In addition, compatible information recording/reproduction device or the detector circuit in the information reproduction device being set can be by shared; Obtain the high reliability of reproducing, and reduced cost.

But in the boundary belt of rewriting type medium, back synchronization zone 546 and 536; Further region 544 and 534; Buffer zone 547 and 537; VFO district 532 and 522; Preamble area 533 and 523,528 of extended protection fields are set at the position that continuous recording stops.Present embodiment is characterised in that: rewrites or additional writing, like this, extended protection district 528 and VFO district 522 subsequently partly overlapped when rewriting at duplicating position 591.When part is duplicated when being retained, by rewriteeing or additional writing, the interval (not forming the district of record mark) that produces between can avoiding writing down bunch.In addition, crosstalk, can detect a steady reproducing signal, be implemented in record in the single face double record layer by interlayer in the elimination information storage medium.

The size of data that a data segment can be rewritten in the present embodiment is 67+4+77376+2+4+16=77469 (data byte).One wobble data unit 560 is 6+4+6+68=84 time (swing).One physical segment 550 is made up of 17 wobble data unit, and the length of 7 physical segments 550 to 556 is consistent with the length of a data segment 531.Like this, 84 * 17 * 7=9996 time (swing) is set in a data segment 531 length.Therefore, above in the formula, 77496/9996=7.75 (data word joint number/swing) correspondence is once swung.

VFO district 522 subsequently and extended protection field 528 laps are being followed 24 swings from a physical segment starting position, 16 swings of physical segment 550 beginnings are configured in swing synchronization zone 580, and 68 swings subsequently are configured in non-modulation district 590.Therefore, being accompanied by the VFO district 522 of 24 swings and the lap of extended protection field 528 is included in the non-modulation district 590.Like this, the data segment starting position is accompanied by 24 swings from the physical segment starting position, and thus, lap is included in the non-modulation district 590.In addition, the detection time and the setup time that are used to swing synchronization zone 580 recording processing can be very long, like this, guaranteed steady and accurate recording process.

But the phase-change recording film is used to the recording sheet of the rewriting type information storage medium of present embodiment.In the phase-change recording film, near beginning/end position that the bad change of recording sheet starts from rewriteeing.Like this, if start-of-record/end of record (EOR) is repeated in same position,, can limit the quantity of rewriting owing to the bad change of recording sheet.In the present embodiment, for breviary the problems referred to above, during rewriting, J _M+1/ 12 data bytes are changed, and record start position is by randomly changing.

Although the starting position of extended protection field 528 is consistent with the starting position in VFO district 522, in order to explain key concept, strict says that in the present embodiment, the starting position in VFO district 522 is by randomly changing.

But the phase-change recording film is used as the recording sheet in the current rewriting type information storage medium DVD-RAM dish, and in order to improve number of rewrites, the beginning/end position of record is by randomly changing.When the randomly changing amount was implemented in current DVD-RAM dish, the maximum weight range that changes was set to 8 data bytes.Channel bit length (data as after the modulation will be recorded in the dish) on average is set as 0.143 μ m in the current DVD-RAM dish.But in the rewriting type information storage medium according to present embodiment, the average length of channel bit is taken as (0.087+0.093)/2=0.090 (μ m).Be adjusted under the situation that meets current DVD-RAM dish in physical displacement scope length,, be taken as the required minimum length of random shift scope in the present embodiment by using top value:

8 bytes * (0.143 μ m/0.090 μ m)=12.7 bytes

In the present embodiment, carry out the reproducing signal testing process easily in order to distribute, randomly changing amount unit is adjusted " channel bit " that meets after the modulation.In the present embodiment, 8 ETM modulation (8 to 12 modulation) that are transformed into 12 are used,, represent that the formula expression of random shift amount is designated as J when data byte is defined as a reference _m/ 12 (data bytes).Value above utilizing in the formula is passed through J _mThe value that obtains is 12.7 * 12=152.4, like this, and J _mScope from 0 to 152.For above-mentioned reasons, satisfy in the scope in the following formula, the length of random shift scope is consistent with current DVD-RAM dish, and the number of rewrites similar to current DVD-RAM dish can guarantee.In the present embodiment, in order to distribute current and more number of rewrites, for required minimum length, provide very little surplus, the length of random variation scope is set to 14 (data bytes).In these formula, set up 14 * 12=168, like this, by J _mThe value that can get is set in 0 to 167 scope.As mentioned above, the random shift amount is defined within and compares J _m/ 12 (0≤J _m≤ 154) in the wide scope, thus, the length of the physical extent that the random shift amount is relevant is consistent with the length of current DVD-RAM.Like this, obtained useful effect: can guarantee the duplicate record number of times similar to current DVD-RAM.

The buffer zone 547 of record bunches 540 and the length in VFO district 532 are constant.Random shift amount J in all data segments 529 _mObtained as identical value in the identical recordings bunches 540.Comprise that record position is detected by swing under the record bunch 540 continuous recording situations of mass data section.That is to say, be detected to the position of the swing synchronization zone 580 shown in the 24D, in the non-modulation district 592 and 593 shown in Figure 23 C and 23D, when calculating swing quantity, in record, carry out the detection of the record position of information storage medium as Figure 24 A.At this moment, because wrong swing number or make the non-homogeneous rotation of the rotation motor of information storage medium rotation, swing takes place slide the record of change location (in hunting period), and tiny displacement takes place in the information storage medium record position.Information storage medium according to present embodiment is characterised in that: as mentioned above under the detected situation of the variation that produces of record position, but regulate in rewriting type protected location 461, carry out recording timing and proofread and correct in protected location 461.Now, a H form will be described.As described later, key concept is used in the B form.Although the important information that does not take place to duplicate in bit loss or position is recorded in synchronization zone 546, a back, a further region 544 and a preamble area 533, special pattern is repeated in buffer zone 547 and VFO district 532.Like this, as long as this repetition boundary line position is set, just only allow losing or duplicating of a pattern.Therefore, special, in the present embodiment, adjust at buffer zone 547 or VFO district 532, realize the recording timing correction.

In the present embodiment, be defined as the actual starting position that the reference position is provided with and be set up, to such an extent as to amplitude of fluctuation " 0 " (oscillation centre) location matches.Yet the swing position accuracy in detection reduces, and like this, in the present embodiment, it is ± 1 data byte that actual starting position allows the variable quantity maximal value, is described as " ± 1 maximal value ".

The random shift amount is defined as J in the data segment 530 _m(as mentioned above, all data segment random shift amounts are consistent each other in the record bunches 540); To be defined as J by the additional data segment 531 random shift amounts that write _M+1Shown in top formula by J _mAnd J _M+1The value that obtains for example, when getting intermediate value, obtains J _m=J _M+1=84.Under the very high situation of the position accuracy of actual starting point, the starting position of extended protection field 528 is consistent with the starting position in the VFO district 522.

On the contrary, after data segment 530 is recorded in the maximal value back location, be recorded under the maximal value anterior locations situation by the additional data segment 531 that writes or rewrite, 522 starting positions, VFO district can enter buffer zone 537 maximal values 15 data bytes.The information of particular importance is recorded in further region, and then before buffer zone 537.Therefore, in the present embodiment, the length of buffer zone 537 needs 16 data bytes or more.In the present embodiment, buffer area data volume is set as 15 data bytes, considers to stay the surplus of 1 data byte.

As the result of random shift, if occurred between extended protection district 528 and the VFO district 522 at interval, adopt under the single face double record layer structure situation, because this is at interval, produce layer-to-layer signal transfer during reproduction.Like this, even random shift occurs, the present invention is created, so that overlap mutually in extended protection field 528 and VFO district 522, does not produce at interval.Therefore, in the present embodiment, the length that extended protection field 528 need be set is equal to or greater than 15 data bytes.71 data bytes are large enough to hold in back to back VFO district 522.Like this, even the tiny broadening of extended protection field 528 and 522 overlay regions, VFO district does not have obstacle (because obtaining to reproduce the synchronous time of reference clock by in the non-overlapping VFO of being arranged on of the abundance district 522) yet during signal reproduction.Therefore, can be with the value setting of extended protection field 528 greater than 15 data bytes.As being described, tiny swing takes place during continuous recording slide, and record position can being shifted a hunting period.One hunting period is corresponding to 7.75 (≈ 8) data byte, and like this, in the present embodiment, extended protection field 528 length are set as and are equal to or greater than 23 (=15+8) data byte.In the present embodiment, as buffer zone 537, the length of extended protection field 528 is set as 24 data words and connects, the same surplus of considering to stay 1 data byte.

The record start position of record bunches 541 need be set accurately.But utilize and to be recorded in the swinging signal that writes down in rewriting type or the write-once type information storage medium in advance, detect this record start position according to this information recording/reproduction device of present embodiment.To shown in the 23D, in all districts beyond this swing synchronization zone 580, pattern changes to IPW at four swing units from NPW as Figure 23 A.Compare, in this swing synchronization zone 580, the swing converter unit is partly changed in four swings, and like this, this swing synchronization zone 580 can detect the position easily.Like this, detect the position of this swing synchronization zone 580, like this, carry out the preliminary work of recording process according to this information recording/reproduction device of present embodiment, and opening entry.The starting position of one record bunches 541 need be set in the non-modulation district 590 after this swing synchronization zone 580 and then like this.This swing synchronization zone 580 is set at after the and then physical segment dislocation.The length of this swing synchronization zone 580 is defined as hunting period 16 times.In addition, detected this swing synchronization zone 580 after, consider surplus, need 8 hunting periods and be used to prepare recording process.Therefore, even consider random shift, very necessary, the starting position in VFO district 522 is set at after a physical segment change location 24 or more times swing in this record bunch 541 starting positions.

Recording process is performed repeatedly at duplicating position 591 during rewriting.When rewriting was repeated, the physical form of wobble groove or swinging chute bank can change (bad change), and this swing reproducing signal amount can reduce.In the present embodiment, the present invention is created, so that when rewriteeing or additionally write fashionablely, duplicating position 591 is recorded in the non-modulation district 590 and can enter this swing synchronization zone 580 or swinging address district 586.In non-modulation district 590, have only default weave mode (NPW) to be repeated.Like this, even the minimizing of swing reproducing signal amount part utilizes the swing reproducing signal can carry out interpolation operation.Like this, during rewriting or additional write fashionablely, the position of this duplicating position 591 is set up, thereby is included in the non-modulation district 590.Like this, can obtain useful effect: owing to swing when the bad change swing of shape causes the reduction of reproducing signal amount in synchronization zone 580 or the swinging address district 586, can guarantee the signal of swing detection stably of swinging address information 610 when avoiding.

More than describe and relate generally to the single-surface single-layer dish.Following description relates to single face multilayer (here for double-deck) dish.Those parts identical with above description will be indicated with same label, and will omit their detailed description.

Measuring condition

Determine the characteristic of recording medium according to the DVD specification, and be necessary whether test satisfies this specification before selling described recording medium.For this purpose, need a kind of device that is used for the characteristic of survey record medium, and determine the measuring condition of measurement mechanism with this specification.The characteristic that is used for the shaven head of measuring media characteristic is adjusted as follows.

Wavelength X: 405 ± 5nm

Polarization: circularly polarized light

Polarization beam apparatus PBS: should use

Numerical aperture: 0.65 ± 0.01

Light intensity at the pupil edge of object lens: 55% to 70% of maximum intensity level

Wave front aberration after passing desirable substrate: 0.033 λ max

Normalization detector size on dish: 100＜A/m2＜144 μ m, wherein

A: the central detector district of shaven head

M: from coiling the lateral magnification of detecting device

The relative intensity noise of laser diode (RIN) * :-125dB/Hz (maximal value).

*: RIN (dB/Hz)=10log[(AC power density/Hz)/DC power]

The section structure of single-surface double-layer recordable disc

Figure 31 illustrates the sectional drawing of single-surface double-layer recordable disc (Write-once disc).This single-surface double-layer dish has the first transparent substrate 2-3 that is made by polycarbonate in plane of incidence (the reading the surface) one side of the laser beam 9 that penetrates from object lens.This first transparent substrate 2-3 has the translucence for the wavelength of laser beam.This laser beam wavelength is 405 (± 5) nm.

First recording layer (layer 0) 3-3 is provided on the plane relative with the light entrance face of the first transparent substrate 2-3.Be provided for the first recording layer 3-3 with the corresponding pit of recorded information.Light semitransparent layer 4-3 is provided on the first recording layer 3-3.

On light semitransparent layer 4-3, provide wall 7.This wall 7 is as the transparent substrate at layer 1, and has the transparency for laser beam wavelength.

Second recording layer (layer 1) 3-4 is provided on the plane relative with the light entrance face of wall 7.Be provided for the second recording layer 3-4 with the corresponding pit of recorded information.On the second recording layer 3-4, provide reflection layer 4-4.Substrate 8 is provided on reflection layer 4-4.

The thickness of wall 7

The thickness of the wall 7 in this single-surface double-layer Write-once disc is 25.0 ± 5.0 μ m.Will make layer-to-layer signal transfer bigger if wall 7 is thin, this makes and is difficult to make, has therefore adjusted measuring of thickness.In the single-surface double-layer read-only recording medium, the thickness of wall 7 is 20.0 ± 5.0 μ m.Because once writing recording medium is in the influence of its layer-to-layer signal transfer greater than the layer-to-layer signal transfer of read-only recording medium, so it is thicker a little that this single-surface double-layer Write-once disc is made into to compare with read-only recording medium, and the central value of wall 7 thickness is adjusted to 25 μ m or bigger.

Comprise birefringent reflection

Reflectivity in system's Lead-In Area and system's leading-out zone for height to main frame be 4.5 to 9.0% and for low be 4.2 to 8.4% to high coiling.Reflectivity in data importing district, data field, mesozone and data leading-out zone is 4.5 to 9.0% for low coiling to height.

Reflectivity is high more good more.But limited here, and determine that those limits are so that the number of times of repetition and playback signal characteristic satisfy preassigned.Because the recording layer as layer 0 must be translucent, so its refraction coefficient is lower than the refraction coefficient of individual layer.

Layer-to-layer signal transfer

As described above, the single face multilayer recording medium has from other layer and is reflected the light that comes to the influential problem of reproducing signal (layer-to-layer signal transfer).For being described in detail, when (for example, layer 1 other layer that can reproduced light beam irradiates in) the reproduction process (when for example, layer 0 recording status of) signal changes, has produced such problem, i.e. the signal of reproduction period layer 1 skew of being crosstalked at a layer.In addition, when tracer signal on layer 1, optimal recording power has been recorded or has not been recorded according to layer 0 and changed.The reason of these problems is such facts, for example, has the transmittance of layer 0 recording medium and reflectivity according to the recording status or the fact that changes of recording status not, perhaps can not make the bigger fact of thickness of wall in order to reduce aberration.But, physically reducing this characteristic is the devil.So the CD of present embodiment has by clearance (district under constant recording status) being provided for each floor thereby can not produce the feature of skew in signal.

The definition of clearance

In multilayer disc, focus on beam spread on the layer of dish to other layer of this dish, and in other layer and reflection on the layer that light focused on, shown in figure 32.Therefore, the read and write of this layer is subjected to the influence of beam reflected on other layer of dish.For alleviating this influence, this state that coils other layer should be unified according to the existence that is recorded mark.Definition influences the district of the read and write quality of this floor on other floor of dish that with the focus is benchmark.Subsequently, should remain the unified read and write that is limited on one deck any by this being coiled district on other floor.The radial distance in described district is known as " clearance ".Referring to Figure 33.

Consider three and will usually calculate clearance: the maximum relative deviation of radius between layer 0 and the layer 1, between layer 0 and layer 1 maximal phase to radially beating and the radius of light beam on other layer.These values are defined as follows;

The maximum relative deviation of radius between layer 0 and layer 1:

Rd _max＝40μm

Maximal phase is to radially beating between layer 0 and layer 1:

Rr _max＝(40+60)/2＝50μm

The theoretical radius of light beam on other layer:

R _{c_theoretical}＝T _sl×tan(sin ^-1(NA/n))＝14μm

Here T _SlBe the maximum ga(u)ge 30 μ m of wall, NA is numerical aperture=0.65 and n is the refractive index 1.5 of wall.

Because the intensity of this light beam is the highest and minimum at the edge at the center, so real radius R _{C_principal}Can be made as about 10 μ m effectively.

The clearance Cl of this dish is calculated by following equation:

Cl＝Rd _max+Rr _max+R _{c_principal}＝100μm

The block of information form is set up in clearance on the edge that consideration is distinguished in the block of information.

Attention: Figure 33 has described the notion that move the position.

The relative deviation of radius can not cause outwards moving in layer 1 inevitably, and diameter run-out can not cause moving inward in layer 0 inevitably relatively.

The example of clearance in physical sector number

The clearance that is reduced at the physical sector number from the viewpoint of compatibility is useful.AM in Figure 35 should be used for the clearance of the physical sector number on position M (referring to Figure 34).

Figure 34 shows layer 0 physical sector number PSN and corresponding to the write down physical sector of the layer 1 of this physical sector number PSN.The physical sector number of layer 0 and layer 1 has a negate relation.

Conventional parameter

The conventional parameter of single-surface double-layer Write-once disc is shown in Figure 36.These parameters are similar to the conventional parameter of single-surface single-layer Write-once disc.Below different with those single-surface single-layer Write-once discs; User data capacity (30GB), data field inside radius (to layer 0 is 24.6mm, is 24.7mm to layer 1) and data field external radius (is 58.1mm to layer 0 and layer 1).

The block of information form

The block of information is divided into 7 parts: system's Lead-In Area, bonding pad, data importing district, data field, mesozone, data leading-out zone and system's leading-out zone.Only a block of information expands to two layers.Mesozone on each layer allows reading optical beam to move to layer 1 from layer 0.Referring to Figure 40.The data field is used for writing down master data.System's Lead-In Area comprises control data and reference number.The data leading-out zone allows reading of continuously smooth.

Track structure

System's Lead-In Area and system's leading-out zone have comprised the track of being made up of a series of burr pits.Track in system's Lead-In Area and system's leading-out zone has formed and has reversed 360 ° continuous helical.The center of described track is the center of described pit.

Formed to the track of data leading-out zone from the mesozone at the track from the data importing district to the mesozone on the floor 0 with on floor 1 and to have reversed 360 ° continuous helical.

In data importing district, data field and mesozone on the floor 0 and the mesozone on floor 1, data field and data leading-out zone form by a series of groove track.Described groove track on the floor 0 from the data importing district begin to the end of mesozone and on floor 1 from the mesozone to begin to the end of data leading-out zone be continuous.If two single-surface single-layer dishes are pasted together mutually, have then made and had two two-sided dual layer discs of reading face.

Layer be defined as with one that coils to read face relative.The HD DVD-R that is used for dual layer discs reads mask at each two layers that are designated layer 0 and layer 1.The layer 0 be the most approaching read the surface the layer and the layer 1 be from read the surface farthest the layer.

The HD DVD-R that is used for dual layer discs can be a single or double.There are four layers for double-sided disc.Opposite face by this dish is visited the two-layer of each face separately.

Sense of rotation

Dish is with from reading the direction rotation that face looks counterclockwise.Track on layer 0 from the interior diameter to the overall diameter to inverted position turn.Track on layer 1 from the overall diameter to the interior diameter to inside turn.

Rail layout

Each track in system's Lead-In Area and system's leading-out zone is divided into data segment.Each track in data importing district, data field, data leading-out zone and mesozone is divided into PS (physical segment) piece.Each PS piece should be divided into seven physical segments.Each physical segment comprises 11067 bytes.

Lead-In Area, leading-out zone and mesozone

The synoptic diagram of Lead-In Area and leading-out zone is shown in Figure 37.The synoptic diagram of the original mesozone on layer 0 and layer 1 is shown in Figure 38.The layout of described mesozone can be expanded by the mesozone and change.Figure 38 shows the original mesozone before the expansion.Each band in Lead-In Area, leading-out zone and mesozone and the border in each district are consistent with the borderline phase of data segment.

From providing system's Lead-In Area, bonding pad, data importing district and data field successively in the inside circumference of the inner circumferential side of floor 0.From providing system's leading-out zone, bonding pad, data leading-out zone and data field successively in the inside circumference of the inner circumferential side of layer 1.Like this, only offer floor 0, so the information on the floor 1 also is written in the data importing district of floor 0 when final complete layer 1 because comprise the data importing district of directorial area.Therefore, can by when starting only reading layer 0 obtain all management information, and advantage is to need not reading layer 0 and layer 1 singly.Notice that at layer 1 identifying recording layer, whole layer 0 must be written into.Described directorial area will be filled when finally finishing this dish.

System's Lead-In Area of layer 0 is made of from inner circumferential side successively initial strip, buffer strip, control data band and buffer strip.The data importing district of floor 0 is made of from inner circumferential side successively dead zone, protection track ribbon, driving calibration tape, looping test band, dead zone, RMD dubs, L-RMD (the record management band in the data importing district), R physical format information band and reference number band.The end address (inner circumferential side) of the data field of the start address (inner circumferential side) of the data field of layer 0 and layer 1 is moved the distance of a clearance, and the end address (inner circumferential side) of the data field of layer 1 is in a side more outer than the start address (inner circumferential side) of the data field of layer 0.

The data leading-out zone of layer 1 is made of from inner circumferential side successively dead zone, looping test band, driving calibration tape and protection track ribbon.

Described dead zone is the band with groove, but does not have record data on it.Described protection track ribbon is the band that has write down the special pattern that is used to test on it, and has write down unmodulated data " 00 " on it.The protection track ribbon of layer 0 is provided at the looping test band of layer 1 and drives record on the calibration tape.Therefore, layer 0 protection track ribbon is corresponding to by to the looping test band of layer 1 with drive the scope that calibration tape adds clearance at least and obtained.Layer 1 protection track ribbon is provided to driving calibration tape, looping test band, dead zone, RMD dubs, the L-RMD at layer 0), R physical format information band and the enterprising line item of reference number band.Therefore, the protection track ribbon of layer 1 is corresponding to bringing to the scope that few interpolation clearance is obtained by driving calibration tape, looping test band, dead zone, RMD dubs, L-RMD, R physical format information band and reference number to layer 0.

As shown in figure 38, layer 0 and layer 1 mesozone the two each all by the protection track ribbon, drive calibration tape, looping test band and dead zone and form successively from inner circumferential side.The protection track ribbon of layer 0 is provided to driving calibration tape and the enterprising line item of looping test band at layer 1.Therefore, the end position of layer 0 protection track ribbon is positioned at apart from the outer circumferential sides of at least one clearance distance of starting position of the looping test band of layer 1.The dead zone of layer 1 is provided to driving calibration tape and the enterprising line item of looping test band at layer 0.Therefore, the end position of layer 1 dead zone is positioned at apart from the inner circumferential side of at least one clearance distance of starting position of the driving calibration tape of layer 0.

Orbital path

In the present embodiment, in order to keep the continuity of 1 record, use opposite track path as shown in figure 39 from layer 0 to layer.In journal, have only when the record to layer 0 is finished, routine just proceeds to the record on the layer 1.

(physical sector layout)

Each PS piece all comprises 32 physical sectors.Be used for the HD DVD-R of dual layer discs, the physical sector number of floor 0 (PSN) in system's Lead-In Area, increase continuously and from the data importing district begin increase continuously to the end of mesozone, as shown in figure 40.Yet layer 1 PSN adopts the position inverted value of the PSN of layer 0, and the end (inboard) from (outside) of mesozone to the data leading-out zone increases continuously and the inboard from the outside of system's leading-out zone to system's leading-out zone increases continuously.

Negate numeral in position is calculated makes place value 1 become place value 0, and vice versa.There is distance much at one at the center that has the physical sector of negate PSN and this dish on each layer mutually.

Its PSN is that the physical sector of X is comprised in the PS piece, by X divided by 32 and PS block address that decimal is rounded off and calculates described PS piece.

Place physical sector that the system Lead-In Area finishes (01FFFFh) to calculate PSN by making at system's Lead-In Area for " 131071 ".

By the PSN that makes the physical sector that places the beginning that is in data field afterwards, data importing district is the PSN except that system's Lead-In Area that (040000h) calculate at floor 0 " 262144 ".The PSN except that system's leading-out zone that calculates at layer 1 for " 9184256 " (BC 2400h) by the PSN that makes the physical sector that places the beginning that is in the data field after the mesozone.

The physical segment structure

Data importing district, data field, mesozone and data leading-out zone comprise physical segment.Physical segment is specified by physical segment order and PS block address.

The WAP layout

Physical segment is corresponding with swinging address (WAP) information in the period position modulated in swing.Each WAP information is represented with 17 wobble data unit (WDU).The length of physical segment equals the length of 17 WDU.The layout of WAP is shown in Figure 41, and Figure 41 is corresponding to Figure 24 C and 24D at the single-surface single-layer dish.Number number of the WDU of numeral indication in physical segment in the field of WAP layout.A WDU is 0 in physical segment.

In WAP, b0 describes CRC to b8, and b9 describes the physical segment order to b11, and b12 describes the PS block address to b30, and b31 describes segment information to b32.Among segment information, b31 describes the reserved area, and b32 describes type.Type represents that (0b is Class1 (Figure 26 B), and 1b is type 2 (Figure 26 C) or type 3 (Figure 26 D) for the type of physical segment.The PS block address is assigned to each PS piece.For the physical segment order, 000b is provided with to first physical segment in the PS piece, and in an identical manner the physical segment order is distributed to other six types of physical segment.

The wobble data unit

Wobble data unit (WDU) is made up of 84 swings.The cycle of swing equals 93T, and T represents the raceway groove clock period here.Figure 42 illustrates the main WDU in the SYNC field.

Figure 43 illustrates the main WDU in address field.Write down 3 in address field, wherein positive phase swinging (NPW) of 0b conduct and 1b are as inverted wobbles (IPW).

Figure 44 illustrates the less important WDU in the SYNC field.

In Figure 45, specified the less important WDU in address field.Write down 3 in address field, wherein positive phase swinging (NPW) of 0b conduct and 1b are as inverted wobbles (IPW).

Figure 46 illustrates the WDU in unified field.The WDU that is used for unified field is not modulated.

The position modulating rule

NPW and IPW are recorded in orbit with waveform shown in Figure 22.The starting position of physical segment is consistent with the starting position of SYNC field.

The swing position that two possible modulation are arranged, main WDU and less important WDU are Figure 42 to 45 illustrate.Usually select main WDU.But, in control procedure, modulated swing might have been arranged in adjacent orbit.In the case, select less important WDU to avoid placed side by side, as shown in figure 25 modulated swing.By modulated swing position physical segment is classified, is called Class1, type 2 and type 3, as Figure 26 A to shown in the 26D.

Select the type of physical segment according to following rule.

1) Class1 or type 2 physical segments are repeated to be equal to or greater than 10 times continuously.

2) type 2 physical segments are repeated to be no more than 28 times continuously.

3) type 3 physical segments can be once selected in the dislocation of 2 physical segments from the Class1 physical segment to type.

4) one of modulated swing position and adjacent tracks separate the length greater than 2 swings.

Lead-In Area, leading-out zone and mesozone

The synoptic diagram of Lead-In Area shown in Figure 47 and leading-out zone.System's Lead-In Area is made of from inner circumferential side successively initial strip, buffer strip, control data band and buffer strip.The bonding pad is begun to form successively from inner circumferential side by connecting band and dead zone.The data importing district by the protection track ribbon, drive calibration tape, looping test band, dead zone, RMD dubs, record management band (L-RMD), R physical format information band and reference number band in the data importing district begins to form successively from inner circumferential side.

Below with the detailed content of descriptive system Lead-In Area.Initial strip comprises the burr data segment.The master data of Frame that is used as the data segment record of initial strip is configured to " 00h ".

Buffer strip comprises 1024 physical sectors from 32 data segments.The master data that finally is used as the Frame of the data segment record in this band is configured to " 00h ".

The control data band comprises the burr data segment.This data segment comprises the burr control data.This control data is by forming from 192 data segments of PSN 123904 (01 E400h) beginning.Figure 48 illustrates the structure of control data band.

Figure 49 illustrates the structure of data segment in the control data part.The content of first data segment in the control data part is repeated 16 times.First physical sector in each data segment comprises physical format information.Second physical sector in each data segment comprises the dish manufacturing information.The 3rd physical sector in each data segment comprises copyright protection information.The content of other physical sector in each data segment keeps to system to be used.

Figure 50 illustrates the structure of physical format information included in the control data part.

The function declaration of each byte location is described below.The value that is assigned to signal on readout power, writing speed, data field reflectivity, push-pull signal and the track that provides in BP 132-154 only is used for example.These values are by manufacturings decision of dish, and their actual value is from satisfying the burr condition and having selected the value of user data characteristic.

The detailed content that the described data field that provides in BP 4-15 shown in Figure 51 is distributed.BP149 and BP152 have stipulated the reflectance of the data field of layer 0 and layer 1.For example, 00001010b represents 5%.Actual reflectance is specified by following formula.

Actual reflectance=value * (1/2)

BP150 and BP153 have stipulated the push-pull signal of layer 0 and layer 1.Position b7 has stipulated the trade shape of the dish of each layer.Position b6 has stipulated the amplitude of push-pull signal to b0.

Trade shape: 0b (track on groove)

1b (at groove track on the bank)

Push-pull signal: for example, 010 1000b represents 0.40.

The actual margin of push-pull signal is specified by following formula.

Actual margin=the value of push-pull signal * (1/100)

BP151 and BP154 have stipulated the amplitude of signal on the track of layer 0 and layer 1.

Signal on the track: for example, 0100 0110b represents 0.70.

The actual margin of signal is specified by following formula on the track.

Actual margin=the value of signal * (1/100) on the track

Bonding pad on layer 0

Bonding pad on floor 0 is used for connected system Lead-In Area and data importing district.The PSN that at the PSN of system's Lead-In Area is the center line of end physical sector of 01 FFFFh and data importing district is that the distance between the center line of beginning physical sector of 02 6B00h is that 1.36 μ m are to 5.10 μ m.If this dish is a single-layered disk, the upper limit of so described distance is 10.20 μ m.This is because there is layer-to-layer signal transfer in bilayer.Preferable for dual layer discs is that thickness is little.The bonding pad does not have burr pit or groove.

The data importing district

The data segment of dead zone does not comprise data.The data segment of protection track ribbon is filled by 00h before record on the layer 1.The looping test band is used for carrying out quality test by dish manufacturer.Driving calibration tape is used for being tested by driver.This band is recorded to interior PS piece from outer PS piece.All data segments of this band were recorded before finally finishing this dish.

The RMD dubs

The RMD dubs comprises RDZ and imports, shown in Figure 52.This RDZ of record imports before being recorded in a RMD among the L-RMZ.Other field of RMD dubs is retained and is filled by 00h.The size that RDZ imports is 64kB and comprises system's reserved field (48kB) and unified identifier (ID) field (16kB).Data in system's reserved field are configured to 00h, and unified id field comprises and has identical 2kB size and eight unit of content.The byte allocation of each unit comprises drive manufacturers ID, sequence number, model and unified dish ID.

Record management band (L-RMZ) in the data importing district is recorded to 03 FEFFh from PSN 03 CE00h.This record management band (RMZ) comprises record management data (RMD).L-RMZ be not recorded the part before finally finishing this dish with current RMD record.

Record management data (RMD) comprises and is coiling the relevant information of enterprising line item.The size of RMD is 64kB.The data structure of RMD is shown in Figure 53.Each RMD is formed by the master data of 2048 bytes and comes record by predetermined signal processing.

RMD field 0 has been stipulated the general information of this dish, and the content of this field is shown in Figure 54.

For plate-like attitude BP2,

00h: it is empty representing this dish.

02h: represent this dish to be recorded and finally not finish as yet.

03h: represent this dish finally to finish.

08h: represent this dish to be in logging mode U.

11h: represent format operation in processing.All the other are retained.

BP22 is shown in Figure 55 to the detailed content of the layout that the data field of BP33 is distributed.

BP34 is shown in Figure 56 to the detailed content of the layout that the data field of BP45 is distributed.

Illustrate as follows BP46 everybody under the occupied state of BP47.

B15...0b: the interior protection track ribbon of representative on layer 0 also is not filled.

... 1b: the interior protection track ribbon of representative on layer 0 is filled.

B14...0b: the interior driving calibration tape of representative on layer 0 also is not filled.

... 1b: the interior driving calibration tape of representative on layer 0 is filled.

B13...0b: represent the RMD dubs also not to be filled.

... 1b: represent the RMD dubs to be filled.

B12...0b: represent the reference code band also not to be filled.

... 1b: represent the reference code band to be filled.

B11...0b: the outer protection track ribbon of representative on layer 0 also is not filled.

... 1b: the outer protection track ribbon of representative on layer 0 is filled.

B10...0b: the outer driving test of representative on layer 0 also is not filled.

... 1b: the outer driving calibration tape of representative on layer 0 is filled.

B9...0b: the Additional Protection track ribbon of representative on layer 0 also is not filled, and perhaps is not assigned with.

... 1b: the Additional Protection track ribbon of representative on layer 0 is filled.

B8...0b: the extra driving calibration tape of representative on layer 0 also is not filled, and perhaps is not assigned with.

... 1b: the extra driving calibration tape of representative on layer 0 is filled.

B7...0b: the outer protection track ribbon of representative on layer 1 also is not filled.

... 1b: the outer protection track ribbon of representative on layer 1 is filled.

B6 is to b5...00b: represent the record of end mark also not begin.

... 01b: the record well afoot of representing end mark.

... 10b: representative keeps.

... 11b: represent the record of end mark to be done.

BP52 is shown in Figure 57 to the detailed content of the layout of the driving calibration tape of BP99.RMD field 1 comprises the OPC relevant information.In RMD field 1, might write down the OPC relevant information that reaches 4 drivers that is used for being present in simultaneously a system, shown in Figure 58 and 59.

Under the situation of single driving, the OPC relevant information is recorded among the field #1 and all the other fields are arranged to 00h.In each case, the field that is not used of RMD field #1 is arranged to 00h.The OPC relevant information of this driver always is recorded among the field #1.If the field #1 of current RMD does not comprise this Driver Information, this Driver Information contains drive manufacturers ID, sequence number and model, the field #2 that is copied to new RMD to the information among the #3 at the field #1 of current RMD is in #4 so, and is discarded in the information among the field #4 of current RMD.If the field #1 of current RMD comprises this Driver Information, the information in field #1 is updated and the information of all the other fields is copied to the field #2 of new RMD in #4 so.

BP72 to BP75, BP328 to BP331, the interior driving calibration tape address that be used for layer 0 of BP584 to BP587 and BP840 to BP843:

These fields specify the minimum PS block address of the driving calibration tape in the data importing district, described data importing district wherein has been performed the up-to-date calibration of power.When not carrying out the calibration of power in the interior driving calibration tape of current drive at layer 0, the interior driving calibration tape address of the layer 0 of current RMD is copied in the interior driving calibration tape address of new RMD.When these fields were configured to " 00h ", this calibration tape was not used.

BP76 to BP79, BP332 to BP335, the outer driving calibration tape address that be used for layer 0 of BP588 to BP591 and BP844 to BP847:

These fields specify the minimum PS block address of the driving calibration tape in the mesozone of layer 0, the mesozone of described layer 0 wherein has been performed the up-to-date calibration of power.When not carrying out the calibration of power in the driving calibration tape of current drive at layer 0, the outer driving calibration tape address of the layer 0 of current RMD is copied in the outer driving calibration tape address of new RMD.When these fields were configured to " 00h ", this calibration tape was not used.

The calibration tape of BP106, BP362, BP618 and BP874 uses descriptor:

These fields specify for the descriptor of the use of four calibration tapes.Everybody is assigned with as follows.

B7 is to the b6... reserved area.

B5...0b: this driver does not use the extra driving calibration tape on the layer 0.

... 1b: this driver has used the extra driving calibration tape on the layer 0.

B4...0b: this driver does not use the extra driving calibration tape on the layer 1.

... 1b: this driver has used the extra driving calibration tape on the layer 1.

B3...0b: this driver does not use the interior driving calibration tape on the layer 0.

... 1b: this driver has used the interior driving calibration tape on the layer 0.

B2...0b: this driver does not use the outer driving calibration tape on the layer 0.

... 1b: this driver has used the outer driving calibration tape on the layer 0.

B1...0b: this driver does not use the interior driving calibration tape on the layer 1.

... 1b: this driver has used the interior driving calibration tape on the layer 1.

B0...0b: this driver does not use the outer driving calibration tape on the layer 1.

... 1b: this driver has used the outer driving calibration tape on the layer 1.

BP108 to BP111, BP364 to BP367, the interior driving calibration tape address of the layer 1 of BP620 to BP623 and BP876 to BP879:

These fields specify the minimum PS block address of the driving calibration tape in the data leading-out zone, carried out the up-to-date calibration of power in the described data leading-out zone.When not carrying out the calibration of power in the interior driving calibration tape of current drive at layer 1, the interior driving calibration tape address of the layer 1 of current RMD is copied to the interior driving calibration tape address of new RMD.When these fields were configured to " 00h ", this calibration tape was not used.

BP112 to BP115, BP368 to BP371, the outer driving calibration tape address of the layer 1 of BP624 to BP627 and BP880 to BP883:

These fields specify the minimum PS block address of the driving calibration tape in the mesozone of layer 1, carried out the up-to-date calibration of power in the mesozone of described layer 1.When not carrying out the calibration of power in the outer driving calibration tape of current drive at layer 1, the outer driving calibration tape address of the layer 1 of current RMD is copied to the outer driving calibration tape address of new RMD.When these fields were configured to " 00h ", this calibration tape was not used.

RMD field 2 has stipulated to give the data of user's special use.When this field is not used, in this field, be provided with " 00h ".BP0 is the field that can be used as to the data of user's special use to BP2047.

All bytes of RMD field 3 are retained, and are arranged to " 00h ".

RMD field 4 has been stipulated the information of R band.The content of this field is shown in Figure 60.The part of the data field that keeps for user data is called as the R band.The R band can be divided into two types according to record condition.In open R band, can add data.In the R band that finishes, can not add user data.In the data field, can not provide three or more open R bands.The part of the data field that keeps for record data is not called as invisible R band.Following R band district afterwards can be retained in the invisible R band.In the time can not further adding data, there is not invisible R band.

BP0 is the sum of invisible R band, open R band and the R band that finishes to the number of the invisible R band of BP1.

RMD field 5 to RMD fields 21 have been stipulated the information of R band.The content of these fields is shown in Figure 61.When these fields were not used, all fields were configured to " 00h ".

R physical format information band in the data importing district from seven PS pieces (224 physical sectors) of PSN 261888 (03 FF00h) begin make up.The content of the PS piece in R physical format information band is repeated seven times.The configuration of the PS piece in R physical format information band shown in Figure 62.

The content of the physical format information in the data importing district shown in Figure 63.Figure 63 is identical with Figure 50, and Figure 50 is illustrated in the content of the physical format information in system's Lead-In Area.BPO duplicates from the physical format information system's Lead-In Area to BP3.The layout that BP4 distributes to the data field of BP15 is different from the layout of Figure 51, and shown in Figure 64.BP16 duplicates to the physical format information of BP2047 from system's Lead-In Area.

(mesozone)

The structure of mesozone is changed by the mesozone expansion.In 65C, illustrated before the expansion and the synoptic diagram of the mesozone after the expansion at Figure 65 A.The structure of the mesozone before the expansion shown in Figure 66.Additional Protection track ribbon on layer 0 and additionally drive the expansion of calibration tape and produce after the size of protection track ribbon depend on the end PSN of the data field on layer 0.In Figure 69, stipulated value Y and Z, value Y and Z be the protection track ribbon in physical sector number.

The protection track ribbon

At the data segment of using the protection track ribbon on the 00h packed layer 0 before the record on the layer 1.Before finally finishing this dish, be filled in the data segment of the protection track ribbon on the layer 1 with 00h.

Drive calibration tape

This band is used for the test by the driver execution.On layer 0 this is with from outer PS piece to interior PS piece record.Be filled in all data segments of the described driving calibration tape on the layer 0 at available 00h before the record on the layer 1.

The looping test band

This band is used for the test by the execution of dish manufacturer.

Dead zone

The data segment of dead zone does not comprise data.The size of the outermost dead zone on layer 0 is greater than 968 PS pieces.The size of the outermost dead zone on layer 1 is greater than 2464 PS pieces.

The structure of leading-out zone

The structure of leading-out zone is shown in Figure 70.

The data leading-out zone is made of from outer circumferential sides successively protection track ribbon, driving calibration tape, looping test band and dead zone.System's leading-out zone is derived band by system and is formed.

Before finally finishing this dish, fill the data segment of protection track ribbon with 00h.

The driving calibration tape is used for the test by the driver execution.This band is recorded to interior PS piece from outer PS piece.The data segment of dead zone does not comprise data.

Bonding pad on layer 1

Bonding pad on layer 1 is used to connect data leading-out zone and system's leading-out zone.Be that distance between the center line of beginning physical sector of FE 0000h is that 1.36 μ m are to 5.10 μ m at the PSN of the center line of the end physical sector of data leading-out zone and system's leading-out zone.The bonding pad is without any burr pit or groove.

All master datas of the Frame that writes down as the physical sector in system's leading-out zone are configured to 00h.

Format

Format is the processing of using when dish is used and comprise that initialization, data field are distributed (mesozone expansion), fill and finally finished.

Initialization

When at this disc recording user data, be necessary in the RDZ Lead-In Area in the RMD dubs recorded information and select logging mode.

The mesozone expansion

Before record in the mesozone on the layer 1, can carry out the mesozone expansion.The mesozone expansion has increased the mesozone and has reduced the data field simultaneously.The structure of mesozone is changed by the mesozone expansion.The default end PSN of the data field of layer on 0 is 73 DBFFh and the default initial PSN of data field on layer 1 is 8C 2400h.Before record in the data field on the layer 1, the new end PSN that driver can be data field on layer 0 redistributes the PSN less than 73DBFFh.RMD field 0 is expanded by the mesozone and is upgraded, and except the data field when finally finishing by reorientation outside, the new end PSN of the data field on layer 0 is recorded in the R physical format information band.

When the end PSN that has carried out mesozone expansion and the data field on layer 0 become X (＜73DBFFh) time; the bit reversal of X number is the initial PSN of the data field on floor 1; formed the supplementary protection track ribbon on layer 0; formed the dead zone on layer 1; and the protection track ribbon of reorientation on layer 1, as Figure 65 A to shown in the 65C.When X＜72 6C00h, on layer 0, form additional drives calibration tape and dead zone, and be formed on the additional drives calibration tape on the layer 1.

Requirement before record on the layer 1

On the layer 1 except before the end mark record, for fear of the influence of layer 0, some bands should be filled 00h.

Under the situation about not expanding in the mesozone, the protection track ribbon on floor 0 that is in data importing district and the mesozone should be filled 00h.Driving calibration tape in mesozone on the layer 0 can be filled 00h.

Expanded under the undersized situation in the mesozone, be in data importing district and the mesozone at the protection track ribbon on the floor 0 and be on the floor 0 the Additional Protection track ribbon in the mesozone and should fill 00h, shown in Figure 65 B.Driving calibration tape in the mesozone on the layer 0 can be filled 00h.

Expanded under large-sized situation in the mesozone, be in shouting track ribbon and being on the floor 0 the Additional Protection track ribbon in the mesozone in the data importing district and should fill 00h, shown in Figure 65 C.On layer 1, drive in the calibration tape before the record, be on the layer 0 the protection track ribbon in the mesozone and should fill 00h.Driving calibration tape in mesozone on the layer 0 and the extra calibration tape that drives can be filled 00h.

When these bands have been filled 00h, then should upgrade the information of RMD field 0.

Finally finish

When finally finish the data field, in the data field that is not recorded, write down end mark, shown in Figure 77.The master data of end mark is arranged to 00h, and its district's type is that data derive attribute.Be recorded under the situation of layer on 1 at user data, end mark is recorded on all data fields that are not recorded.

Be not recorded under the situation of layer on 1 at user data, end mark is recorded on layer 0 and the layer 1, shown in Figure 77 A and 77B.The end mark of end continuous recording on layer 0 from the data field.If the sufficient data segment that is not recorded is arranged between data field and mesozone, there is no need so not to be recorded end-of-record delimiter on the data segment, and allow on layer 1, to produce the driving calibration tape, shown in Figure 78 A at all.The size of this driving calibration tape is 480 PS pieces.The end PSN that in Figure 72, has stipulated at the end mark on the layer 0 and the beginning PSN of the end mark on layer 1.

After having write down end mark, if the protection track ribbon that is arranged in data leading-out zone and mesozone on layer 1 is not recorded then fills with 00h.Be arranged in filling before the protection track ribbon of data leading-out zone, record be arranged in the data importing district driving calibration tape, L-RMZ be not recorded part, R physical format information band and reference number band.

If be not recorded data segment be present in shown in Figure 78 A between the end PSN and mesozone of the end mark on the layer 0, there is no need so to write down and be positioned at the protection track ribbon of mesozone on layer 0 and the layer 1.

Condition at the enabling signal of measurement data Lead-In Area, data field, mesozone and data leading-out zone

Make skew canceller bandwidth compare following expansion with single layer.

-3dB closed loop bandwidth: 20.0kHz

Bandwidth is 5kHz in single layer.Yet, this bandwidth is expanded to some extent for surplus is provided.

Burning district sign indicating number (bca code)

BCA is the district that is used for recorded information after the dish manufacture process is finished.If read output signal satisfies the bca code specification of signals, then allow by using the pre-pit replication processes to write bca code.BCA is present on the layer 1 of single-surface double-layer dish.Since BCA be present in the single-surface double-layer read-only disk the layer 1 on, so but driver can with recording layer dish and read-only disk compatibility.

The update condition of RMD

RMD should be updated under at least one of following condition;

1) at least one change of the content of regulation in RMD field 0, or

2) the driving calibration tape address modification of regulation in RMD field 1, or

3) the invisible R band number of regulation, the first open R band number or the 2nd R band number change in RMD field 4, or

4) PSN of the smallest record physical segment in R band #i becomes greater than 37888 with difference between " R is with the smallest record PSN of #i " that be deposited with among the minimum RMD.

As long as the data recording operation sequence is equal to or less than 4 PS pieces in processing, in above-mentioned condition 2) and 4) in just do not need to upgrade RMD.

Select the policy of physics segment type

As shown in figure 26, but in the physical segment of recorded information storage medium, distribute by three types modulator zone.The detailed content of the distribution type of the modulator zone that is arranged on each diameter has been described.The principles illustrated of this process is as follows.

The purpose of type selecting is for fear of modulated area overlapping on adjacent orbit.Figure 73 A, 73B and 74 illustrate and are used for type selecting that layer 0 is got on the right track.For the track on layer 1, should with use at figure alternate figures 73A, the 73B and 74 of the identical mode of Figure 71 B alternate figures 71A of layer 1 at layer 1.

The purpose of type selecting is placed side by side for fear of modulated is swung.The synoptic diagram of 2 adjacent orbits has been shown in Figure 71 A and 71B.The starting point of the track #i just in time starting point with physical segment #n is identical, and i and n represent natural number here.Track #i comprises j physical segment, a k WDU and m swing, and j represents natural number and k and m represent nonnegative integer here.If k and m both are non-vanishing, physical segment #n+j is positioned at track #i and #i+1 so.

Relative position between the modulated swing among track #i and the #i+1 depends on m.If m is equal to or greater than 21 and less than 63, the Class1 physical segment should be selected so, shown in Figure 73 A in track #i+1.Otherwise type 2 physical segments should be selected in track #i+1, shown in Figure 73 B.For every kind of situation, the Class1 physical segment is selected in track #i.

Type 3 physical segments can be once selected in the dislocation of 2 physical segments from the Class1 physical segment to type.The selection of type 3 physical segments depends on that not only m also depends on k.The example that should select the situation of type 3 physical segments shown in Figure 74.Type 3 physical segments should be selected under one of following condition.

1) k is equal to or greater than 6 and less than 12, and m is equal to or greater than 0 and less than 21, or

2) k is equal to or greater than 5 and less than 11, and m is equal to or greater than 63 and less than 84.

Be used to select the process of physics segment type with identical according to the process shown in Figure 75 of first embodiment.Be primarily aimed at two tracks and carry out process repeats in this process.This repetitive process illustrates hereinafter.

The length of this repetitive process depends on the physical segment number of selecting in third step.

1) estimation (ST82) of the swing number on a track

Estimate the decimal value of the swing on current track according to the value on the track formerly.

Swing N _WRound values can obtain by decimal being rounded up to approximate round values.

2) calculating of j, k and m (ST83)

J, k and m are calculated as follows.

j＝N _W-(N _W?mod?1428)/1428，

m＝N _W?mod?84，

k＝((N _W-m)/84)mod?17

Computing " x mod y " is represented at x divided by the modulus after the y.

3) selection of type (ST84)

Select the type of physical segment according to the condition of following k and m.

Condition 1:21＜m＜63

Select the physical segment of 2j Class1.

Condition 2:0＜k＜6 and 0＜m＜21, or 0＜k and 63＜m＜84

Select the physical segment of j Class1 and the physical segment of j type 2.

Condition 3:6＜k＜12 and 0＜m＜21, or 5＜k＜11 and 63＜m＜84

Select physical segment, the physical segment of a type 3 and the physical segment of j type 2 of j Class1.

Condition 4:12＜k＜17 and 0＜m＜21, or 11＜k＜17 and 63＜m＜84

Select the physical segment of j+1 Class1 and the physical segment of j+1 type 2.

The system of selection that is used for the distribution type of modulator zone shown in Figure 75.When the selection process begins (ST81), estimate to be used for the swing N of inner tracks _wNumber (ST82).Can obtain integer swing N through decimal fraction being rounded to the most contiguous integer _wCarry out the calculating (ST83) of j, k and m.Computing " x mod y " representative is represented at x divided by the modulus after the y.At ST83, j, k and m are calculated as follows.

1)j＝{N _w-(N _w?mod?1428)}/1428

2)m＝N _w?mod?84

3)k＝{(N _w-m)/84}mod?17

As shown in step 84, selected type (Class1, type 2 and type 3) and repetition number (j, 2j, j+1).

Condition 1:21≤m＜63

Select the physical segment of 2j Class1, shown in Figure 26 B.

Condition 2:0≤k＜6 and 0≤m＜21, or 0≤k and 63≤m＜84

Select the physical segment (Figure 26 B) of j Class1 and the physical segment (Figure 26 C) of j type 2.

Condition 3:6≤k＜12 and 0≤m＜21, or 5≤k＜11 and 63≤m＜84

Select physical segment (Figure 26 B), the physical segment (Figure 26 B) of a type 3 and the physical segment (Figure 26 C) of j type 2 of j Class1.

Condition 4:12≤k＜17 and 0≤m＜21, or 11≤k＜17 and 63≤m＜84

Select the physical segment (Figure 26 B) of j+1 Class1 and the physical segment (Figure 26 C) of j+1 type 2.

To all track implementation ST82 to ST84.When all tracks having been carried out process ST82 to ST84 (ST85), the selection of the distribution type of modulator zone finishes (ST86).

The fastness to light of dish

Adopt the air cooling xenon lamp and abide by the fastness to light of the testing apparatus test panel of ISO-105-B02.

Test condition

Black panel temperature:＜40 ℃

Relative humidity: 70 to 80%

The dish illumination:

Pass substrate, normal incidence.

Writing power

Writing power has level Four: peak power, bias power 1, bias power 2 and bias power 3.These are to incide reading the surface and being used to write mark and luminous power at interval of dish.

Peak power, bias power 1, bias power 2 and bias power 3 bring out at control data.Maximum peak power is no more than 13.0mW.Maximum bias power 1, bias power 2 and bias power 3 are no more than 6.5mW.

Data recording process

Figure 76 be illustrate when have structure shown in Figure 37 and 38 do not use information storage medium to be inserted in the driver time operation carried out.

Insert and do not use blank disc to make the operation beginning.

Distinguish disc-type in the data that step S2 reads in the BCA district.As disc-type, but but single face/double-side type, individual layer/double deck type, read-only/record/rewriting type etc. are arranged.In the case, determine whether the dish that is inserted into is the single-surface double-layer dish.

The RDZ that is recorded in the RMD dubs (RDZ) in data importing district at step S4 imports, and fills RDZ outside importing except RDZ with " 00h " at step S6.The RMD dubs comprises that the RDZ shown in Figure 52 imports.Record RDZ imports before the first record management data RMD of record record management band L-RMZ.Other field of RMD dubs keeps and filling " 00h ".

The record position in data importing district management band (L-RMZ) write down PSN from " 03CE00h " to " 03FFFFh ".Record position management band L-RMZ comprises record position management data RMD.Before finally finishing this dish, write down the not recording areas of L-RMZ with current record location management data RMD.

Record position management data RMD in the data importing district comprises the information about this dish record position.The size of RMD is 64kB, and the data configuration of record position management data RMD shown in Figure 53.

Data segment at the management track ribbon of step S8 padding data Lead-In Area.

In step S10 in the data recordng data of layer 0.In the case, the size of supposing to be recorded data be equal to or greater than layer 0 the data field recording capacity and carry out in the data field of layer 0 record and record in the data field of layer 1.Before record on the layer 1, carry out on layer 0, to fill and finally finish this dish.Execution is finally finished to make might be by the player reading of data.

More particularly, at the protection track ribbon of the mesozone of step S12 packed layer 0.

Driving calibration tape in the mesozone of step S14 packed layer 0.Notice that step S14 can be omitted.

Protection track ribbon in the mesozone of step S16 packed layer 1.

At step S18 record data in the data field of layer 1.

Finally finishing after layer 1 identifying recording layer carried out as follows.When record data when finishing near layer 1 data field, in step S20 as all end-of-record delimiters on the recording areas not of data field that Figure 77 is shown in.The master data of end mark is arranged to " 00h ", and district's type of end mark is the leading-out zone attribute.When having write down data in the total data district at floor 1, end-of-record delimiter not.

When the data field was not recorded on the layer 1, shown in Figure 78 A and 78B, end mark both had been recorded on the layer 0 and also had been recorded on the layer 1.End mark record on layer 0 contacts with the data field.Occur the sufficient data segment that is not recorded between data field and mesozone, end mark does not need to be recorded on all data segments.On layer 1, allow to form new driving calibration tape (seeing Figure 78 A).The new size that drives calibration tape is 480 (PS pieces).Beginning PSN at the end PSN that above states the end mark of having described layer 0 in the table 23 and the end mark of layer 1.

Driving calibration tape in the data importing district of step S22 packed layer 0.

At step S24, the record position in the data importing district of recording layer 0 management band (L-RMZ).

R physical format information band RPFI and reference code band Ref in the data importing district of step S26 recording layer 0.

Protection track ribbon at the data leading-out zone of step S28 packed layer 1.The processing subsequently of end mark record is finally to finish processing.

Then, eject this dish.

The concrete order of recording operation can be according to the content of record data, the changes such as method of Control Driver.Basic restriction about the record order is as follows.

As (with " 00h ") if the recording status of the protection track ribbon of the data leading-out zone of packed layer 1 and layer 0 respective area discontinuous (recording areas and not recording areas and deposit) time, can not carry out stable recording because of the influence of layer-to-layer signal transfer.All respective area of layer 0 must be under a recording status.Therefore; before the filling step S28 of protection track ribbon, necessary execution in step S4 (RDZ of record RDZ (RMD dubs) imports), step S6 (data segment of the protection track ribbon of padding data Lead-In Area), step S22 (the driving calibration tape of padding data Lead-In Area), step S24 (the record position management band (L-RMZ) of record data Lead-In Area) and step S26 (the R physical format information band R-PFI of record data Lead-In Area and reference code band Ref).In addition, at step S24 (the L-RMZ record in data importing district) before, must execution in step S4 (record RDZ imports).Yet the order of step S6, S8, S22 and S26 can suitably change.

In view of above-mentioned same cause, the driving calibration tape of the mesozone of the protection track ribbon of mesozone that must execution in step S12 packed layer 0 before the protection track ribbon of the mesozone of step S16 packed layer 1 and the packed layer 0 of step S14.Yet the order of step S12 and S14 can suitably change.At step S18 in the data field of layer 1 before the record data, must execution in step S10 in the data field of layer 0 the protection track ribbon of the mesozone of record data and step S12 packed layer 0.Yet the order of S10 and S12 can suitably change.

To be described in the modification of recording operation among Figure 76 below.

From step S10 the data field of layer 0 record data to step S18 in the data field of layer 1 in the moving of record data, the mesozone is filled (layer 0 and layer 1).In order to shorten traveling time, can regularly carry out described filling with another.In the time will writing down the stream of not knowing its size of data in advance, data recording is interrupted in the filling time in one period.Therefore, at the protection track ribbon of the mesozone of execution in step S12 packed layer 0 early regularly, can be before any one of step mule S4, S6 and S8 or execution in step S12 afterwards.For protection track ribbon with the mesozone of later timing execution in step S16 packed layer 1, can be before any one of step mule S22, S24 and S26 or execution in step S16 afterwards.

Revise as another, in order to begin the data recording (step S10) in the data field of layer 0 in as far as possible early timing, can be being right after step S4 (RDZ of RMD dubs imports record) execution in step S10 afterwards, shown in Figure 79.In Figure 79, can omit the driving calibration tape (step S14) of the mesozone of packed layer 0.Yet, when the size of record data during greater than the recording capacity of the data field of layer 0, and when layer 0 and layer 1 can record data on both, some inconveniences have appearred.In the case; shown in Figure 80; carried out step S12 (the protection track ribbon of the mesozone of packed layer 0) afterwards at the step S4 RDZ of the RMD dubs (import record), but execution in step S10 (data recording in the data field of layer 0) and step S18 (data recording in the data field of layer 1) after this.When protection track ribbon, can begin record on layer 1 in the mesozone of step S12 packed layer 0.

As the modification that relates to end mark record, will describe wherein at end-of-record delimiter on the layer 0 below and on layer 1, do not have the situation of end-of-record delimiter.When end mark is not connected to the mesozone shown in Figure 78 A, at step S14 (the driving calibration tape of the mesozone of packed layer 0) afterwards at step S20 end-of-record delimiter, shown in Figure 81.

When end mark is connected to the mesozone shown in Figure 78 B; at step S10 (layer 0 data recording step) afterwards at step S20A end-of-record delimiter on layer 0; and at step S12 (the protection track ribbon of the mesozone of packed layer 0) and step S14 (the driving calibration tape of the mesozone of packed layer 0) afterwards at step S20B end-of-record delimiter on layer 1, shown in Figure 82.

The expansion of mesozone causes the minimizing of data field.When the mesozone is expanded, can shorten being used for filling the not time of recorded data zone, and can shorten the final deadline with end mark.

In the present embodiment, even after the protection track ribbon of the mesozone of step S12 packed layer 0, also can expand the mesozone.Step S16 (the protection track ribbon of the mesozone of packed layer 1) and step S18 (record data in the data field of layer 1) that the step of expansion mesozone can be right after in Figure 76 carry out before.

The present invention is not limited only to the foregoing description.At implementation phase, can revise element and implement the present invention by not breaking away from spirit and scope of the invention.Can form various inventions through the disclosed in the above-described embodiments a plurality of elements of appropriate combination.For example, from omitting several elements disclosed all elements in an embodiment.In addition, use element suitably to make up mutually at different embodiment.For example, wherein used the structure of two recording layers shown in Figure 1A to may be used on the recording film of the coating based shown in Figure 1B.More particularly, the present invention's single face multilayer DH_DVD-R dish of recording film of two or more coating baseds that may be used on lamination wherein.

Claims

1. the information recording method of a recorded information on information storage medium, in this information storage medium,

From reading surperficial layer 0 and the layer 1 that begins sequentially to arrange as recording layer;

Begin sequentially arranging system Lead-In Area, data importing district, data field and mesozone from this floor 0 inner periphery;

Begin sequentially arranging system leading-out zone, data leading-out zone, data field and mesozone from this layer 1 inner periphery;

Arrange the protection track ribbon in described data leading-out zone, this protection track ribbon is positioned at data field one side; And

With the data importing district of the corresponding described floor 0 of described protection track ribbon in arrange reference number band, R physical format information band, record position management band and drive calibration tape, this method is characterised in that and comprises step:

At the driving calibration tape and the record (S24 that fill (S22) described data importing district; S26) after the R physical format information band in the reference number band in described record position management band, described data importing district and described data importing district, carry out the filling (S28) of the protection track ribbon of described data leading-out zone.

2. according to the information recording method of claim 1, it is characterized in that:

With the data importing district of the corresponding described floor 0 of protection track ribbon of described data leading-out zone in further be arranged with record position management data dubs, and

After the record and filling of this record position management data dubs, carry out the filling of the protection track ribbon of described data leading-out zone.

3. the information recording method of a recorded information on information storage medium, in this information storage medium,

Arrange the protection track ribbon in the mesozone of described layer 0, this protection track ribbon is positioned at data field one side; With

Comprise the protection track ribbon with the mesozone of the corresponding described layer 1 of described protection track ribbon, this method is characterised in that and comprises step:

After the protection track ribbon of the mesozone of filling (S12) described layer 0, carries out the filling (S16) of protection track ribbon of described layer 1 mesozone.

4. according to the information recording method of claim 3, it is characterized in that:

Outer circumferential sides at the protection track ribbon of described mesozone further is arranged with the driving calibration tape, and

At the protection track ribbon of the mesozone of filling described layer 0 with after driving calibration tape, carries out the filling of protection track ribbon of described layer 1 mesozone.

5. the information recording method of a recorded information on information storage medium, in this information storage medium,

Begin sequentially arranging system leading-out zone, data leading-out zone, data field and mesozone from this layer 1 inner periphery; With

Arrange the protection track ribbon in the mesozone of described layer 0, this protection track ribbon is positioned at data field one side, and this method is characterised in that and comprises step:

The filling (S12) of the protection track ribbon of the mesozone of data recording (S10) in the data field of described layer 0 and described layer 0 is carried out the data recording (S18) in described layer 1 the data field afterwards.

6. information-recording apparatus that records the information on the information storage medium, in this information storage medium,

With the data importing district of the corresponding described floor 0 of described protection track ribbon in arrange reference number band, R physical format information band, record position management band and drive calibration tape, this apparatus characteristic is to comprise:

First filler cells (S22), it carries out the filling of the driving calibration tape in described data importing district;

Record cell (S24, S26), it writes down the record position management band in described data importing district and the reference number band and the R physical format information band in described data importing district; And

Second filler cells (S28), it carries out the filling of the protection track ribbon of described data leading-out zone after filling of being undertaken by this first filler cells and the record that undertaken by this record cell.

7. information-recording apparatus that records the information on the information storage medium, in this information storage medium,

Comprise the protection track ribbon with the mesozone of the corresponding described layer 1 of described protection track ribbon, this apparatus characteristic is to comprise:

First filler cells (S12), the filling of the protection track ribbon of the mesozone of the described layer 0 of its execution; And

Second filler cells (S16), it carries out the filling of protection track ribbon of the mesozone of described layer 1 after the filling of being undertaken by this first filler cells.

8. information-recording apparatus that records the information on the information storage medium, in this information storage medium,

Begin sequentially arranging system leading-out zone, data leading-out zone, data field and mesozone from this layer 1 inner periphery; And

Arrange the protection track ribbon in the mesozone of described layer 0, this protection track ribbon is positioned at data field one side, and this apparatus characteristic is to comprise:

First record cell (S10), it is recorded in data in the data field of described layer 0;

Filler cells (S12), the filling of the protection track ribbon of the mesozone of the described layer 0 of its execution; And

Second record cell (S18), it is recorded in data in the data field of described layer 1 after record that is undertaken by this first record cell and the filling undertaken by this filler cells.