CN1741172A

CN1741172A - One-time writable optical disc and method for recording optical disc management information

Info

Publication number: CN1741172A
Application number: CN 200410054054
Authority: CN
Inventors: 朴容彻
Original assignee: Shanghai LG Electronics Co Ltd
Current assignee: Shanghai LG Electronics Co Ltd
Priority date: 2004-08-27
Filing date: 2004-08-27
Publication date: 2006-03-01

Abstract

A method for recording management information on optical disc being able to write once includes setting temporary management region on said disc and recording temporary defect region information and temporary management information of optical disc in the region, recording user mode and record mode of optical disc as well as position information recorded in last time section simultaneously in temporary management information when defect region and user mode of optical disc are supervised.

Description

The CD that can write-once and the recording method of disc management information

(1) technical field

The present invention is about the CD that can write-once and the recording method of disc management information.

(2) background technology

As optical recording media, the CD that can write down mass data uses comparatively general.Wherein, can non-volatile recording and store the video data of high image quality and the new high-density optic recording media (HD-DVD) of high tone quality voice data, (Blu-ray Disc) obtained exploitation recently such as Blu-ray Disc.

HD-DVD technology of future generation-Blu-ray Disc significantly surpasses the optical recording solution of future generation of DVD data before this as storing, and recently, these the technical manual of international standard also is tending towards perfect.

The Blu-ray Disc that belongs to the HD-DVD international standard uses 405nm wavelength bluish violet (Blue-Purple) laser more densely covered than the DVD of present 650nm wavelength red laser, and on CD, can store far away more than the data of DVD now with the 1.2mm thickness of 0.1mm light-transmitting layer, 12cm diameter.

In the middle of the various standard schemes of relevant Blu-ray Disc are being formulated, and after the Blu-ray Disc BD-RE that can write down repeatedly, in the middle of the various standards of Blu-ray Disc BD-WO that can write-once are also being formulated.

Fig. 1 represents that the Blu-ray Disc that can write down repeatedly writes down the structure in field.To having individual layer recording layer CD, the Blu-ray Disc of Fig. 1 is represented the structure in the field of writing down, and from dividing in interior week, can be divided into Lead-In Area, data field, leading-out zone.In addition, have ISAO (inner backup area) district and OSAO (external backup district) district that are intended to the replace defective district in the data field and be distributed in inner periphery and the outer periphery separately, the position, intermediate portion is provided with the user area of user data.

At the Blu-ray Disc that can write down repeatedly, in the record data process,, just the data of defect area record are moved on to backup area if there is defect area in the data field, operation substitutes the action of record.Also have,, information such as defect area and alternative recording areas relevant position are write down the

defect management

1,2,3,4 (DMA1,2,3,4) with importing/leading-out zone, carry out defect management with this as management information to defect area.In addition, the CD that can write down repeatedly is an example, all can carry out record repeatedly because of any field of CD, not limited by special recording method, can arbitrarily use the whole field of CD.

But because of CD that can write-once can only carry out the single record of CD specific area, there is more restriction in recording mode.Particularly to the random use in the whole field of CD, because of managerial difficulty, very difficult realization is a undisputable fact.In addition, during video disc recording data that recently high density of BD-WO of exploitation and so on can write-once, defect management also becomes an important link.So CD that can write-once also needs such can accept the unified specification that the advanced person requires item, but to these problems, in fact, any relevant specification that can CD-WORM of delivering now also fails to solve similar problem.

(3) summary of the invention

Purpose of the present invention will address the above problem exactly, provide a kind of can write-once CD and the recording method of disc management information, the recording mode of CD and the effective method of record and management related administrative information particularly are provided.

In order to achieve the above object, of the present invention can write-once CD and the recording method of disc management information have following characteristics.

A kind of can write-once CD and the recording method of disc management information, it is characterized in that comprising:

Has temporary defect management area, and temporary defect district information and interim disc management information is recorded in the temporary defect management area, when management compact disc defect district and user mode, when the recording disk logging mode is with its interactive CD user mode information in the described interim disc management information, the positional information of last record gone up in record from the time period, that is in time last recording address TLRA.

A kind of can write-once CD and the recording method of disc management information, it is characterized in that comprising: step

According to logging mode, the step of recording disk;

If end record just is recorded in filesystem information the step of the final position of end;

The positional information that the filesystem information of above-mentioned record is in is recorded in the step in the cura specialis district in the CD.

A kind of can write-once CD and the recording method of disc management information, in the CD given zone, possess the field of the interim disc management information of record, when it is characterized in that managing the CD user mode, comprise the steps:

The step of the CD user mode information of decision video disc recording pattern and interaction thereof;

With the video disc recording pattern and the user mode information of above-mentioned decision, the positional information that goes up last record from the time, that is, in time last recording address TLRA is recorded in the step in the described interim disc management information;

By the period of having set, upload the step of described interim disc management information.

The CD given zone has to have in temporary defect management area, the temporary defect management area to be intended to write down and has the positional information that can write down last record from the time period in CD in temporary defect district information and the field of interim disc management information, the described interim disc management information, that is the field of in time last recording address TLRA.

Effect of the present invention:

Of the present invention can write-once CD and the recording method of disc management information, at CD that can write-once, the selectivity record of the CD user mode information (' magnetic track information ' or ' SBM ') that logging mode decision causes can be carried out, in addition, management TLRA and PLRA information, by going for the new management information recording method that can CD-WORM of existing mode different structure, make it can carry out effective and advanced CD use on the whole.

For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.

(4) description of drawings

Fig. 1 roughly represents the existing compact disk structure that can write repeatedly.

Fig. 2 represents the compact disk structure that the present invention can write-once.

Fig. 3 represents to be applicable to interim disc management information that can CD-WORM of the present invention.

Fig. 4 represents to be applicable to initial method that can CD-WORM of the present invention.

The simple expression of Fig. 5 is applicable to the magnetic track kind that the present invention can CD-WORM.

Fig. 6 represent to be applicable to of the present invention can CD-WORM the magnetic track information structure and utilize the example of these disc management information recording method.

The simple expression of Fig. 7 is applicable to each field service orientation and starting position that can CD-WORM of the present invention.

Fig. 8 represent to be applicable to of the present invention can CD-WORM SBM (Space Bitmap space bit map) structure and utilize the example of these disc management information recording method.

Fig. 9 represents to be applicable to the records management information of the present invention in can the interim disc management information of CD-WORM.

Figure 10,11,12 expressions, at explanation be applicable to of the present invention can the CD of CD-WORM in the diagrammatic sketch of positional information of last record.

(5) embodiment

Below, with reference to the accompanying drawings, specify of the present invention can write-once CD and the embodiment of the recording method of disc management information.Simple on illustrating will be example with Blu-ray Disc BD-WO that can write-once, describe.

Need to prove, though select the term of now more common term as far as possible as the present invention's use, but under specific circumstances, the optional term of applicant is also arranged, at this moment, partly added the content that specifies its meaning in relevant explanation, therefore, should be not being that the term meaning of simple term name is understood the present invention.

The following describes according to compact disk structure and according to the CD initial method of logging mode.

Fig. 2, the 3rd, about be applicable to of the present invention can write-once compact disk structure and write down the concrete diagrammatic sketch of interim disc management information method.

At first, go for compact disk structure that can write-once of the present invention and also done specific description at patent 2003-15634 and the patent 2003-33008 (Korea S) that the applicant has applied for, below, its structure is described.

Fig. 2's can CD-WORM be the relevant single-layer optical disc of individual layer recording layer that has, comprise Lead-In Area, leading-out zone, user area, at first, can draw the conclusion that need be intended to substitute the backup area ISAO/OSAO (inner backup area/external backup district) in recording defect district and be intended to the temporary defect management area (Temporary Defect Management Area abbreviates TDMA as) of managing defective area information for the defect management of physical property.In general, the CD that can write down repeatedly is an example, even only possess the limited defect management (Defect Management Area abbreviates DMA as) of size, also can carry out the erasable of its field repeatedly, therefore, need not defect management capacious, but CD that can write-once is because of can not service recorder field once, for defect management, need the bigger directorial area of capacity.If CD that can write-once no longer during recorded information, might need final temporary defect management area information is moved on to the process of defect management record, therefore,, be called temporary defect management area TDMA in order to distinguish with defect management DMA.

At Fig. 2, temporary defect management area is divided into and is distributed in Lead-In Area, and has a temporary defect management area 1 of fixed size, be TDMA1, with be distributed in the external backup district, and has a temporary defect management area 2 with the corresponding size of backup area, be that TDMA2 is (such as at Fig. 3, P=(N*256)/4), temporary defect management area separately is set to formulate temporary defect district catalogue (Temporary Defect List abbreviates TDFL as) and interim disc management information (Temporary Disc Definition Structure abbreviates TDDS as).

TDDS#

1,2,3, the interim

disc management information

1,2,3,4 of 4 expressions among the figure;

TDFL#

1,2 expression temporary

defect district catalogues

1,2.

Here, if defect area takes place in the data field, temporary defect district information just substitutes these with backup area, the information representation of this process with the defect area information management, and, formulate (is example with the individual layer) with 1～4 string (Cluster) size according to the size of defect area information.Interim disc management information is all formulated with 1 string, comprises the disc definition structure (DDS:Disc Definition Structure) (in the sector 0) of narrow sense and the user mode information (magnetic track information or space bit map SBM) (at sector 1-31) of CD here.

By Fig. 3, with the existing CD that can write down repeatedly relatively, illustrate that the content that interim disc management information comprises is just as follows:

The CD that can write down repeatedly is an example, disc definition structure is only used the information about extremely a part of-60 bytes in 1 string (forming with 32 sectors) as disc management information (also can call disc definition structure information), other field all is set at ' zero padding (Zero Padding) '.But interim disc management information of the present invention also will use other field with disc management information except the field (60 byte) that the existing CD that can write down is repeatedly applied flexibly.So interim disc management information of the present invention not only writes down the disc definition structure that the existing CD that can write down repeatedly uses, go back the minute book invention such can the required information of CD-WORM, but determine that its size is 1 sector (2048 byte).In the information of CD necessity that can write-once, because of the present invention supports multiple recording mode, the logging mode of decision recording mode is indispensable information, example: continuous recording pattern, arbitrarily logging mode.In addition, also might comprise up-to-date temporary defect district information, this according to actual conditions, will make decision in formulating the specification process in a variety of forms.Then, CD user mode information of the present invention is write down in all the other 31 sectors in 1 string.CD user mode information is meant the information that changes according to the CD operating position, particularly can CD-WORM being example, at whole CD, for correct search by the record field of record/not distinguish can the additional record field and necessity.Certainly, in this case, also might form CD user mode information in preceding 31 sectors of interim disc management information, and out of Memory is formed the 32nd sector in the end.

As the method for the such CD user mode of expression, the present invention proposes 2 kinds of modes, and called after ' magnetic track information ' and SBM (Space Bitmap space bit map), will carry out in the back specifying of this.

Fig. 4 is the relevant method of CD initialization of the logging mode according to the present invention.

Even at CD that can write-once, also will support multiple recording mode in the present invention, this is divided into continuous recording mode and random recording mode.

The continuous recording mode be comprise existing can write-once CD adopt the DAO of the disposable whole records of CD (Disc AtOnce) mode and in order recording disk increase progressively (Incremental) recording mode, particularly enlarge the notion of incremental record mode, do not limit in the CD can the additional record field number, increase the mode easily of factors such as user.

Arbitrarily recording mode is not to be suitable for existing common mode that can CD-WORM, is a kind of mode that can freely write down in the whole field of CD.That is, be the mode that does not limit recording areas record order in the CD.

Because of the present invention supports above-mentioned multiple recording mode, when the CD initialization, need the decision recording mode, and it is carried out initialization.Promptly by the recording mode of user or disc making person or main frame (Host is designated hereinafter simply as main frame etc.) decision CD, system is according to the requirement of above-mentioned main frame etc., and the recording mode to determine, these be divided into two partly after, be set in the cura specialis district in the CD.Specifically, if the recording mode of decision CDs such as main frame, system as CD cura specialis district, is set in the corresponding 1 byte records pattern of decision recording mode in the interim disc management information, and the corresponding therewith CD user mode information of decision.That is,,, set ' magnetic track information ' as user mode information if the continuous recording mode is record mode setting ' 0000 0000b ' just.If random recording mode is record mode setting ' 0000 0001b ' just, as user mode information, setting space bitmap ' SMB '.So, when using CD later on,, simultaneously, select in the corresponding therewith user mode information with the basis recording mode recording disk of setting recording pattern, as disc management information, in case of necessity, it is uploaded.

If wiping is seen in these sides from CD Load System correspondence, be exactly following situation:

If loading initialization finishes, and in using can write-once CD, at first judge the logging mode of associated optical disc, and judge according to logging mode, determine in the above-mentioned multiple CD user mode information recording method formula corresponding with logging mode, as relevant user mode information, get final product uploading to the CD managing district that sets in the associated optical disc.

Below, corresponding with logging mode in the interim disc management information of the present invention is described, and ' magnetic track information ' and the concrete structure and the recording method of space bit map ' SBM ' managed, simultaneously, the concrete grammar that above-mentioned interim disc management information and temporary defect district information is recorded in temporary defect management area and defect management also will be described successively.

The following describes magnetic track information structure and recording method.

Magnetic track information is in the expression CD user mode information, in the present invention, is meant the suitable user mode information of CD that is suitable for the continuous recording mode.Existing CD that can write-once has used the information of representing this user mode with multiple title, such as in CD series, is called magnetic track information; In DVD series, be called Rzone, fragment (Fragment) or recording interval (Recording range).The present invention is referred to as magnetic track information with these, and this and title are irrelevant, the Ying Yiqi understanding that looks like.Below, concrete magnetic track information structure of the present invention and recording method will be described.

Fig. 5, the 6th, the relevant accompanying drawing that uses magnetic track information, Fig. 5 represents the magnetic track kind that the present invention defines, Fig. 6 represents the physical record method because of the suitable magnetic track information of the record mode setting of continuous recording mode.

Fig. 5 roughly represents to be suitable for the kind of basic magnetic track of the present invention, suppose to divide CD with a plurality of magnetic tracks, and using the compact disc states after a period of time the same with Fig. 5,

magnetic track

1,2 just is equivalent to can carry out in addition in the magnetic track the open magnetic track (Open Track) in additional record field;

Magnetic track

3,4 becomes and can not carry out finishing magnetic track or finishing magnetic track (Complete Track or closetrack) of additional record again because of record fully; Magnetic track 5 is the magnetic tracks that can carry out additional record at any time, is called intermediate magnetic track (Intermediate Track).So be applicable to that it is 3 kinds that magnetic track kind of the present invention is divided into, particularly can not carry out in the magnetic track (magnetic track 3,4) of additional record, magnetic track 3 is from the field of final data record, the former state that can carry out additional record that belonged to before this, but because of specific reasons (mainly being the shutdown command of main frame), all the other of magnetic track partly by behind the zero padding (blacking partly), are converted on this point of finishing magnetic track and distinguish with magnetic track 4.

Irrelevant with the kind of magnetic track, each magnetic track all has the information of the last recording address LRA (Last Recorded Address) of record data at any time, that is, and and 5 magnetic tracks.Last recording address is: LRA1, LRA2, LRA3, LRA4, LRA5.In fact last recording address represents the FA final address of record data, therefore, is example with magnetic track 3, just is equivalent to last recording address LRA3 by the position before the zero padding.More particularly, if the record unit is a string, there are totally 32 sectors in 1 string, in 1 string, only record is equivalent to certain sector partly, and other sector is by zero padding, at this moment, last recording address will be become last recording address by the last sevtor address before the zero padding.

In addition, but the next one write address (Next Writable Address) that draws from last recording address only is transmitted after the open magnetic track that can carry out additional record (magnetic track 1,2) and intermediate magnetic track (magnetic track 5) are determined because of the requirement of main frame etc.Finish magnetic track (magnetic track 3,4) because of can not carrying out additional record, but can not be suitable for the notion of next one write address.

More than, the kind to magnetic track defines.Below, specify the magnetic track information method for expressing that changes according to the CD user mode.

At first, the present invention does not limit the quantity of open magnetic track, and this is because want effectively to utilize CD.So the quantity of open magnetic track also can exist with a greater number of being ready with to finish magnetic track the same.Therefore, the quantity of opening magnetic track is the magnetic track information structure to its best-fit.

The magnetic track information structure that is included in the interim disc management information that explanation draws from Fig. 6 bottom is as follows.

At first, magnetic track information is shown 3 greatly and is partly formed, and 3 parts are respectively the magnetic head portion that makes it to be identified as magnetic track information, magnetic track information inventory (catalogue) portion of direct representation magnetic track information, the termination display part that the demonstration magnetic track information stops.

Magnetic head portion is positioned at the first half of magnetic track information, except magnetic track information structural identifier (the Track Info Structure Identifier) field that makes it to discern magnetic track information, also has the magnetic track information form (Track Info Format=00h) of demonstration, show reservation and be set to 00h (reservedand set to 00h), level number sign indicating number (the Layernumber 0 or 1) field that shows the magnetic track information recording layer kind of formulating now, magnetic track sum (the Total number of tracks) field that shows whole magnetic track quantity, open magnetic track sum (the Total number of open tracks) field that shows open magnetic track quantity, therefore, before reading direct magnetic track information inventory, can confirm the content of whole magnetic track information.

After the magnetic head portion, recording track information inventory (catalogue) portion, the record of end magnetic track information inventory (catalogue) portion just stops the termination that display part shows magnetic track information with magnetic track.So the magnetic track information of record stops display part (finishing magnetic track information catalogue portion) with magnetic head portion and magnetic track information inventory (catalogue) portion and magnetic track and forms in the interim disc management information, and is the mode of summarizing these information records.

To magnetic track information inventory portion, more specifically be described as follows.

Magnetic track information inventory portion is an inlet (Entry) embodiment with a magnetic track correspondence in the CD, each inlet dispensing 8 bytes, such magnetic track information inlet is formed with the 1st address information of the kind of information of relevant magnetic track and relevant magnetic track and last address information of associated magnetic trace record data.

In addition, expression magnetic track kinds of information is existing with 4 bit tables with the magnetic track status information of distinguishing defined magnetic track kind, and the open magnetic track of additional record is to represent with ' 0000b ' in the magnetic track of can being correlated with of the present invention; With intermediate magnetic track is example, and with ' 0001b ' expression, the magnetic track of finishing that can not carry out additional record is to represent with ' 1000b '.After the magnetic track information, the 1st address information of relevant magnetic track with ' Start PSNof Track ' represents in the field (example: Start PSN of Track#n, #n+1, #n+1......), then, ' LRA of Track ' represents (example: LRAof Trac#n, #n+1, #n+1......) last 1 address information usefulness of associated magnetic trace record data.So,, just can correctly confirm LRA in relevant magnetic track kind and starting position and the magnetic track as long as read 1 inlet.

The following describes space bit map SBM structure and recording method.

SBM (Space Bitmap space bit map) is in the expression CD user mode information, in the present invention, is the user mode information that is applicable to random recording mode CD.

SBM goes for the whole field of CD, distributes 1 for each smallest record unit 1 string, if the field of the relevant string of record, and just with ' 1b ' expression, otherwise with the method for ' 0b ' expression (if with mutually opposite form use also can).So, if read SBM information, which is just easily grasped partly is the recording areas of present CD and recording areas not, even this method is not record data in order, but random record data also can be represented the CD user mode, therefore smoothly, the present invention determines to be suitable for the SBM method, particularly in random recording mode.

Fig. 7, the 8th, the drawing that SBM of the present invention is relevant, Fig. 7 distinguish the multilayer field, represent each recording layer of CD briefly, and Fig. 8 represents, according to the record mode setting of random recording mode and the physical record method of suitable SBM.

Fig. 7 is according to each field, represented briefly can CD-WORM several record layers, particularly at Blu-ray Disc BD-WO.

With BD-WO is example, there is layer 0 in its recording layer with multilayer form, layer 1 (Layer0, Layer1 are designated hereinafter simply as ' L0 ' and ' L1 '), each recording layer is from forming with middle (inner) importing/leading-out zone, middle backup area, user area, external backup district, outside area in interior week.If when having the double-layer CD of several record layers, the mesozone of the 1st recording layer L0 just becomes Lead-In Area, and the mesozone of the 2nd recording layer L1 just becomes leading-out zone.But when having only the single layer structure of 1 recording layer (Fig. 2,6,8 is example, for the facility on illustrating, and the example of expression single-layer optical disc), outside area may become the leading-out zone in the definition.

In addition, observe the service orientation in each field, the 1st recording layer L0 uses from interior thoughtful peripheral direction, but have only external backup district 0 be defined as from outer thoughtful in the Zhou Fangxiang use.Though the 2nd recording layer L1 with from outside thoughtful in Zhou Fangxiang use, have only middle backup area 1 to be defined as from interior thoughtful peripheral direction use.So, we can say that every field is determined the starting position in field separately according to service orientation.But this only is the content that defines at the CD service efficiency, if the service orientation of change every field, the starting position of every field also changes thereupon.

More than, the service orientation and the starting position of definition CD every field, below, will specify the SBM method for expressing that changes according to the CD user mode.

Below, the SBM structure that is included in interim disc management information that also can draw from the bottom of Fig. 8 is described.

At first, SBM roughly is divided into 3 parts, is specially the termination that the SBM information portion that makes its magnetic head portion that can discern SBM and direct representation SBM and expression SBM stop and represents portion.

It can be discerned beyond the SBM, and magnetic head portion comprises that also the SBM that expression is formulated now is relevant recording layer information (level number the sign indicating number 0 or 1) field of which recording layer on earth.So CD user mode information-' magnetic track information ' of the present invention and SBM all formulate with recording layer separately, this means each recording layer, during user mode change (maybe needing to upload), should upload interim disc management information.

SBM information portion and Fig. 7 are such, when CD is distinguished with the multilayer field, formulate SBM according to every field, also according to the needs of main frame etc., make its whether uploading according to every field decision SBM.

If specify these, SBM information portion inside is according to every field, the length information (Length in Area) that comprises start position information and association area, actual message bit pattern (Bitmap data) is only when above-mentioned start position information and length information are all set, and makes it upload association area.This mode is called SBM and opens and closes (on/off) function, is the multiple requirement at main frame etc., makes its flexible reply.In addition, BD-WO is an example, if environment for use is to belong to the true moment (real-time), also might not carry out defect management, therefore, under this situation, can not distribute backup area.So, not only need not upload SBM, and under specific circumstances,, as a kind of directorial area, also might not upload SBM to all the other fields with one user area, field that SBM only manages the user data physical record.Reason is, directorial area has the change of management information at any time, at this moment, if upload SBM, SBM recording areas (the present invention writes down in temporary defect management area) because of limited size, can not carry out SBM again and upload,, be intended to separate the problem that to manage user mode by SBM in the user area of SBM information necessity.So, utilize SBM of the present invention to open and close function, only the SBM that carries out user data area uploads, when all the other fields are reluctant to upload, the start position information of not uploading the field and length information are set at particular value, are worth, and start position information and the length information that will upload the field are set at original value such as ' 0 (Zero) ', therefore, might carry out.

The following describes Ci Daoxinxi ﹠amp; With space bit map SBM method for uploading.

If according to logging mode, as CD user mode information, determine to be ' magnetic track information ' or ' SBM ' that the uplink time section of relevant information just becomes problem.Upload be basically be equivalent to system freely design item, but situation below must be uploaded and may meet the purpose that writes down such information.

At first, the field that should occur the frontier that can write down or appearance the period of uploading of CD user mode information in using CD changes to when finishing the record field and carries out.This means the not recording areas that occurs in the CD between recording areas or the recording areas, if ' magnetic track information ', the situation that just is equivalent to new open magnetic track to occur or changes to intermediate magnetic track; If ' SBM ', along with can carrying out random record, the record requirement according to main frame etc. can take place at any time, this situation finally be equivalent to new occur or disappear can additional record the field, should upload CD user mode information.

Then, should when CD ejection or powered-down, carry out the period of uploading of CD user mode information.This is to belong to temporarily to stop the situation that CD uses, because have only CD user mode is before uploaded with ' magnetic track information ' or ' SBM ', could be when using CD next time, by ' magnetic track information ' in the interim disc management information or ' SBM ', can correctly grasp the user mode of present CD.

＜the following describes in time last recording address TLRA and the last recording address PLRA of physical property recording method.

Fig. 9 and Figure 10,11, the 12nd are recorded in another different management information of the interim disc management information of the present invention, be relevant TLRA (the in time last recording address of Timely LRA) and the recording method of PLRA (the last recording address of Physically LRA physical property) and the information of uploading, below, will be specifically described this.

Fig. 9 is with regard to the present invention, concrete expression is recorded in the management information of interim disc management information, Fig. 3 explanation like that, as be applicable in the interim disc management information be positioned at the 1st sector can CD-WORM management information, except logging mode, also have TLRA and PLRA.

TLRA is a management information of the present invention, the address that expression is gone up last record from the time, and PLRA also is in the management information of the present invention, on physical property, means the address of last record.In general, indicating positions management of information information is with 4 byte representations, in the present invention, distributes to 4 bytes separately also for these information, and it is managed.

With reference to Figure 10,11,12, the following describes the above-mentioned in time last recording address TLRA and the concrete meaning of the last recording address PLRA of physical property.

At first, Figure 10 is as the state that uses in the CD, also as the simultaneous situation in field and Unrecorded field that has write down; (such situation, when particularly not limiting open magnetic track quantity, it also is the state that can exist in the continuous recording mode, but major part may be the state of random recording mode) field of record (record field #n+2) also is the field that is lastly recorded in CD from physical property as go up at last from the time, at this moment, the position of TLRA and PLRA indication is with consistent.

Record field #n, #n+1, the #n+2 of Figure 10,11,12 expressions mean the time sequencing that is recorded in CD, are in order to represent the field of n, (n+1), (n+2) inferior record separately.So, be example with above-mentioned example, the field of (n+2) inferior record is the information that goes up the final time segment record from the time; Irrelevant from the field and the time sequencing of the last record of physical property, will be the field that is recorded in the CD most peripheral.

The position general record of TLRA indication filesystem information (File System Information abbreviates FS information as) (1 sector), this be because, if the record in the system finishing CD, just the log file system information is comparatively general on the final position of end of record (EOR).That is, when using associated optical disc, at first with reference to the definitive document system information next time, at this moment, with reference to the TLRA of (the present invention is in the interim disc management information) record in the CD cura specialis district, show the data of relevant position, just can be from obtaining final filesystem information here easily.The present invention will be with disc management information, and the main cause of management TLRA also is these.

PLRA relevant writes down the positional information in field at last from physical property, and this time sequencing with the record field is irrelevant, is relevantly to write down the positional information in field at last along the most peripheral direction of CD.Next time is when using CD, for search is rapidly write down the purpose in field at last and used from physical property.

Figure 11 is the mutual asynchronous example of positional information of TLRA and PLRA indication, is in field in the middle of the CD from physical property and belongs to when going up the field of last record from the time FA final address of TLRA indication (n+2) inferior recording areas; The PLRA indication is from the FA final address of (n+1) inferior recording areas of the last record of physical property.

Figure 12 is the mutual asynchronous another one example of positional information of TLRA and PLRA indication, it is the situation that separate from physical property in field and the field of user data of log file system information, in the specification that CD is relevant before this, also there is situation with this same structure managing file system information.This is after record (n+1) the inferior recording areas of user area, in the filesystem information recording areas, relevant filesystem information is recorded in (n+2) inferior recording areas.So under these circumstances, the FA final address in the filesystem information recording areas becomes the positional information of TLRA indication as the field of temporal last record; The last field of (n+1) the inferior recording areas in the user area becomes the positional information of PLRA indication as the last record field of physical property.

If the method for supplementary notes log file system information, filesystem information is as the document structure information of expression video disc recording, in general, there is basic file structure on the ad-hoc location in the CD, comparatively generally use with this, in each field of CD, the recording mode that the next file structure of root (Tree) form is disperseed.In general, it is called the UDF mode, use comparatively generally at the recording medium of CD and so on recently.So, the present invention is the information that is recorded as 1 sector as the filesystem information that an example proposes, this shows the position of basic file structure or only writes down important information on other file structure, will mean the information for main frame etc. can be write down near file structure easily.

In addition, because of managing CD user mode information and TLRA of the present invention, the PLRA that illustrates in the interim disc management information together, as CD user mode according to recording mode selection, to upload simultaneously ' magnetic track information ' or ' SBM ' period of uploading, if upload period relevant, TLRA before this and the position of PLRA change, and just will upload the positional information that changes with TLRA and PLRA; If there is not the variation of positional information, may just write down the TLRA and the PLRA of record before this faithfully once more.

Like that, the recording mode of TLRA of the present invention and PLRA and CD is irrelevant can be suitable for, but we can say that particularly the efficient when the continuous recording mode is bigger shown in Figure 10,11,12.Read ' magnetic track information ' or ' SBM ' on the whole, PLRA just can confirm which part the last record field of physical property is on earth, but at this moment,, just we can say to exist to make its strong point of the last record of search field positional information rapidly if all use huge capacity compact discs.With TLRA is example, relevant with the position of definitive document system information, can be described as an essential information.So, will show in the present invention, be that essential information of managing is different with TLRA, PLRA is easy to operate for system or main frame etc., information that can selective use.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.

Claims

1, a kind of can write-once CD and the recording method of disc management information, it is characterized in that comprising:

2, as claimed in claim 1 can write-once CD and the recording method of disc management information, it is characterized in that:

When the recording disk logging mode is with its interactive CD user mode information in the described interim disc management information, also write down together from the positional information of the last record of physical property, that is, and the last recording address PLRA of physical property.

3, as claimed in claim 1 can write-once CD and the recording method of disc management information, it is characterized in that:

Described video disc recording pattern is random recording mode, and Hu Dong CD user mode information is space bit map SBM therewith.

4, a kind of can write-once CD and the recording method of disc management information, it is characterized in that comprising: step

According to logging mode, the step of recording disk;

5, as claimed in claim 4 can write-once CD and the recording method of disc management information, it is characterized in that:

Described logging mode is random recording mode.

6, as claimed in claim 4 can write-once CD and the recording method of disc management information, it is characterized in that:

The positional information that described filesystem information is in is to go up the positional information of last record with the time period, that is, and in time last recording address TLRA.

7, as claimed in claim 6 can write-once CD and the recording method of disc management information, it is characterized in that:

Described field from the upward last positional information TLRA record that writes down of time period is the field in the interim disc management information.

8, as claimed in claim 4 can write-once CD and the recording method of disc management information, it is characterized in that:

The positional information that described filesystem information is in also writes down simultaneously from the positional information of the last record of physical property, that is, and and the last recording address PLRA of physical property.

9, a kind of can write-once CD and the recording method of disc management information, in the CD given zone, possess the field of the interim disc management information of record, when it is characterized in that managing the CD user mode, comprise the steps:

10, as claimed in claim 9 can write-once CD and the recording method of disc management information, it is characterized in that:

Described logging mode is random recording mode, and CD user mode information is space bit map SBM.

11, as claimed in claim 9 can write-once CD and the recording method of disc management information, it is characterized in that:

The positional information from the last record of physical property, that is, the last recording address PLRA of physical property also is recorded in the interim disc management information simultaneously.

12, a kind of can write-once CD and the recording method of disc management information, it is characterized in that comprising: