JP3391392B2 - Information recording medium recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to a recording / reproducing area (plan)
Internal grooves and grooves and a read-only area (pit row)
Area), and the address information of the recording / playback area.
The land pre-pit (below the guide groove)
For example, DV formed as “LPP”)
It relates to a recordable information recording medium recording device such as D-RW.
I do. [0002] 2. Description of the Related Art Generally, DVD video is compatible with DVD video.
High-density recording type optical disc such as DVD-RW that can record multiple times
Disk (hereinafter sometimes simply referred to as a recordable optical disk)
, The content protected by copyright and its
Content that is not
To prevent illegal copying (recording and playback)
Must be. DVD videos are read-only data.
And the copyright information that prohibits copying of the content
With CSS (content scramble system),
A specific area of the disk (for copyright protection of CSS keys, etc.)
Information area). And this CSS key
The DVD video playback device provides information on copyright protection such as
Read, information about copyright protection such as this CSS key
Illegally copy the content using
The system for prevention is adopted. [0003] SUMMARY OF THE INVENTION The above-described high-density type
Copyright protection for DVD video content with disk recorder
High-density disc recorded with information about
When played back on a D-video playback device, copyright protection
Copy the information to be read.
Prohibited DVD-Video content can be played,
As a result, the copyright of the copy-protected DVD video can be sufficiently protected.
There was a problem that it could not be done. [0004] The present invention solves the above-mentioned problems.
To solve the problem, an information recording medium recording having the following configuration
Provide equipment. Spiral or concentric information tracks
Frequency from the inner circumference of the information track.
Information recordable area where number signals and address signals are recorded
And the signal to be reproduced is recorded as pits.
A first read-only area in which several signals are recorded, and a
The signal is recorded as pits, and the frequency signal and address
Information having a second read-only area in which
An information recording medium, wherein the information recordable area and the first
Between the read-only area of theregionAnd the first reproduction
Boundary between dedicated area and said second read-only arearegionso
Is the boundaryregionofTracking offtracking
The error signal is of the information recordable area.Tracking off
of timeTracking error signalBoth from the center of the maximum amplitude of
As the ratio of the maximum amplitudeOn the specified information recording medium
Information recording medium recording device for recording informationAt,The border
Bounded areaContinuouslyGrowInformation recordable area
Area, the first read-only area and the second read-only area
Tracking error based on the amplitude of the tracking error signal
Tracking means for performing tracking, and the information recordable area
And an address for complementing the address of the second read-only area.
Dress complement processing means, the information recordable area, and the
Address to which the above-mentioned complementary processing has been performed up to the boundary with the reproduction-only area 1
Recorded on the basis of the second read-only area.
Based on the complemented address signal, the second
A record to be recorded from the information recordable area following the raw exclusive area
Recording means, comprising: recording means.
Place. [0005] DESCRIPTION OF THE PREFERRED EMBODIMENTS Recordable like a DVD-RW
On discs, DVD video is usually written
The location on the disc where information about copyright protection is recorded
Embossed in certain areas (information areas related to copyright protection)
Record information on copyright protection information with pre-pits,
Copyright protection information cannot be overwritten later
Process it. This enables high-density disk recording
DVD-Video content compatible with copyright protection information
The content that has not been recorded is recorded on the DVD-RW,
When played back on a DVD video playback device, the content
Cannot read the copyright protection information corresponding to
Video content cannot be played. As a result, copy prohibition
It is possible to protect the copyright of the DVD video that has been stopped. [0006] A recordable optical disc has a recording laser.
Conditions for specifying light intensity, disc type, manufacturer name
Information such as recorded information, or specific position of recordable guide groove
Address information that can be found by the
The frequency information used for the number of turns control is
Has been recorded. [0007] Then, this recordable optical disc is purchased.
It is designed to start using (recording) immediately after
You. This is as described in the following (1) to (3),
Recording information and address information are recorded at a specific location on the disc.
That can be done. That is, (1) The recorded information is a master disc.
Recorded as embossed pits when cutting
Using the metal matrix created on this master disc.
By forming a disk substrate, the above-mentioned recording type optical disk is formed.
At a specific position on the disk substrate of the disk (read
Recording area). In addition, the previously recorded information is
If you do not record when cutting the master disc,
At the time of shipment after the above-mentioned recordable optical disc is produced,
Using a recorder for recording the previously recorded information,
And a mark are additionally recorded at the above-described specific position. (2) On the other hand, the address information described above is
Increase the width of a specific part of the inner groove and add LPP to that part
Recorded. (3) Further, the frequency information described above indicates that the guide groove is
Recorded as the frequency of the wobble that fluctuated slightly
You. The recorded information and address information described above
Information, frequency information, and guide grooves at specific locations on the disc substrate.
Recording is performed in the following manner. Ma
Equivalent to the depth of a guide groove on a smooth polished glass plate
A photosensitive resist is uniformly applied to a thickness to be obtained. Said above
If the recordable optical disc is a DVD-RW disc,
The photosensitive resist is evenly deposited on a glass disc to a thickness of about 30 nm.
It is applied all at once. Next, the photosensitive resist is uniformly coated in this manner.
Clothed glass board (resist board) is a cutting device
Transported to The cutting device emits light from the light source
Make the cutting laser beam intermittent or
Or a laser beam that shakes slightly in the radial direction (left and right)
A control device is mounted. Cutting resist board
After being mounted in place on the device,
The laser beam for cutting that vibrates
By irradiating on the strike board, the previously recorded information,
Address information and frequency information are recorded at each specific position
Is done. Here, a cutting laser beam is used.
Use two lasers, one of which is a laser
The guide groove is formed as continuous light and the other is interrupted.
To form LPP. In addition, the previously recorded information
Uses a cutting laser beam to form a guide groove.
By using intermittent light, a specific position (re
In the code-in area). After cutting the resist board,
The resist disc is developed and the shape information (the aforementioned
Recorded information, address information, frequency information, guide grooves)
Precipitates. Then, a conductive thin film is placed on the developed resist disc.
Cover the membrane and use electroplating
The described shape information is transferred onto the plating board. This plating
The board is processed to the desired size to form a metal matrix, and this metal
Using an injection molding machine equipped with a matrix,
The above-mentioned shape information is transferred as a shape change on top
As a result, the disk substrate of the recordable optical disk described above is obtained.
Can be Now, the above-mentioned shape change on the disk substrate is performed.
The place where the transformation is transcribed is called the information surface, and this information
A functional film for recording is formed on the surface,
A recordable optical disk is produced through various post-processing. Toko
And a die obtained by injection molding using the metal matrix described above.
The disk substrate has guide grooves and pits throughout the disk substrate.
Have the same depth. As described above, the guide of the recordable optical disk
The grooves are created at the depth required for tracking guidance during recording.
From the recording marks recorded during playback.
When trying to extract the signal as much as possible,
Of the reflectance due to the phase difference of the reflected light caused by the depth difference
It becomes a problem. DVD-RAM data that can be repeatedly rewritten
Land and groove recordings such as those used in discs
Indicates the trajectory between the land (between the guide grooves) and the groove (the guide groove).
Guide grooves to the extent permitted to reduce crosstalk between racks
The depth of the guide groove is generally
Depth at which the guide signal from the
One-eighth wavelength).
General. And push-pull method to guide groove
Tracking operation is being performed. On the other hand, a read-only disc, DVD-R
The OM disk can obtain a reproduction signal as large as possible.
Like the pit depth, diffraction by laser light is more efficient
Is set near the depth at which it is performed (1/3 of the reproduction wavelength).
Around 4 wavelengths). Therefore, the tracking operation is performed in the pit row
The push-pull method for
Signal cannot be obtained sufficiently,
Done. As described above, the recording type optical disc DV
A D-RAM disk can perform recording and reproduction operations efficiently
The depth of the guide groove is set as
DVD-ROM discs are convenient for playback.
Good pit depth is set. Now, a guide groove and a pit having different depths are identified.
A method of providing on a disk substrate of two recordable optical disks;
Then, the following two methods (1) and (2) can be considered. (1) First, as a first method,FIG.To
As shown, when cutting the resist disc,
Cutting laser for forming cuts and guide grooves
-Beam (for convenience, sometimes referred to as laser A)
By changing the force, one output is convenient for pit reproduction
Depth, and the other output is convenient for recording guide grooves.
This is a method of forming a shallower groove. But this cut
In the case of the thinning method, the bottom of the shallow guide groove is
The bottom of the guide groove is glass because it does not reach the glass master
Determined by the output distribution of laser A, not the master
I will. For this reason, the shape of the bottom of the guide groove is not flat
It becomes a funnel. Actually, the output distribution of laser A is
Of the bottom of the guide groove
It is difficult to maintain the quality and the signal characteristics of recording / reproduction are greatly deteriorated.
Occurs. In FIGS. 7 and 8, and in the following description, "LP
"P" indicates "land pre-pit" formed on the land
Also, for convenience, a laser B is used to form land pre-pits.
It is described as the laser light output. (2) Next, as a second method,FIG.To
As shown in the figure, when cutting the resist disc,
Laser for cutting to form guide and guide groove
A beam (laser A) and land pre-pits are formed
Another cutting laser beam for
This is a method using a user B). Laser A with constant output
To form pits and guide grooves of the same depth (pit
And the bottom of each guide groove reaches the glass master under the resist
H). Adjacent to both ends of the guide groove using laser B
Expose the resist to an arbitrary height to adjust the relative depth of the guide groove.
It is a method of adjusting the degree. With this method, the bottom of the guide groove
Since the surface is the surface of the glass master, the shape of the bottom of the guide groove
Is flat, so the conventional guide groove
Recording and reproduction signal characteristics similar to those of a disc can be obtained. However, in this second method, the pit train
At the boundary where the guide groove switches from the guide groove to the pit row
Is playing, the resist between the two pit rows
Height, between pit row and guide groove (or guide groove and pit row)
Pit row because the height of the resist is different
-Pit row to guide groove, guide groove to pit row-Pit row
Pit signal and land pre-pit that switch to
Signal loss, differences in amplitude, and traffic such as push-pull
Disturbances such as differences in the amplitude of the
Occurs. As described above, in one recordable optical disc,
In addition, a pit row with a depth convenient for
If there is a guide groove with a good depth,
To ensure sufficient recording and playback characteristics,
Flatten the bottom surface so that the surface of the glass master
It is desirable to design it. And from the pit row
Reproduce the part that switches from the guide groove to the pit row from the guide groove
The pit signal is missing or
Recorder with raw push-pull tracking disturbance
Was found to exist. This is because the recording device
The pit row is the part where the pit row changes from the inner groove
Of the signal thickness on the adjacent guide grooves by adjusting the resist thickness
Pit line and guidance
The lack of signal information for all pit rows adjacent to the groove
there were. The recording device in which tracking is disturbed in this way is
Switching from pit rows to guide grooves and from guide grooves to pit rows
At some point, the tracking control signal becomes an abnormal value and triggers.
The racking has come off and more than a dozen tracks have been played.
Since the position has moved, recording and playback from the desired location
Some things became impossible. As described above, one recordable optical disk is used.
Therefore, a sufficient reproduction signal can be obtained by recording / reproduction in the guide groove.
Information that cannot be rewritten is recorded in a pit row
To achieve this, the groove depth of the guide groove and the pit row
Depth must be the optimum depth, and
Both the bottom of the guide groove and the bottom of the pit are the surface of the glass master
And both are excellent in recording / reproducing characteristics.
Pit signal at the switching part between pit and guide groove
Recording / playback is possible even if there is a lack of
For a disc without tracking signal disturbance
Had been. Therefore, the present invention is particularly applied to a disk substrate.
The bottom positions of the formed guide grooves and pit rows are shared on the same plane.
And from the pit row to the guide groove or guide groove
The guide groove side from the bottom to the switching part that changes into a pit row
And the height from the bottom to the side of the pit row
An intermediate area consisting of a series of pits whose height varies between
This intermediate area is differential push-pull
Play back using the tracking method or phase difference method
With good playback information from a pit train dedicated for playback,
Obtaining good reproduction information from the recording / reproduction guide groove
As well as always the best tracking in unrecorded areas
Characteristics can be obtained.
Racking characteristics can be obtained. Play-only pit
Stably reproduces the copyright protection information in the
Information recording medium recording device that can record content
The purpose is to provide. Hereinafter, the present invention will be described in detail with reference to the drawings.
This will be described in detail. FIG. 1 illustrates a first example of an information recording medium.
FIG. 2 is an enlarged cross-sectional view for data recording on an information recording medium.
And diagrams for explaining that data is converted into ECC blocks
No. 3 is the information of ECC block data in sector units
For describing recording in a predetermined area of a recording medium.
FIGS. 4A and 4B show a DVD-RW as an example of an information recording medium.
FIG. 5 shows a physical format of one sector in FIG.
Figure showing the lead-in area and data area of the information recording medium
6 is an enlarged section for explaining a second example of the information recording medium.
FIGS. 7A and 7B show a cutting state of the information recording medium.
FIG. 8 is a diagram for explaining an example, and FIG.
It is a figure for explaining other examples of a putting state. The following description relates to the present invention.
As a form of the information recording medium, a DVD-RW is used.
Recording information on a DVD-RW will be mainly described.
Other recordable CD-RW, DVD + RW, etc.
The present invention is also applied to high-density optical discs such as next-generation DVDs.
It goes without saying that it can be applied. The form of the information recording medium is as follows: "Recording format
Form ", B.I. Explain in the order of “Disk type”
You. A. "Record Format Format" First, the “format of the recording format” will be described.
First, general information for recording information on a DVD-RW
Physical format and the recorded information (lead-in information
Report), the error correction process will be described with reference to FIGS.
Will be explained. Error correction processing in DVD-RW and
ECC block as an error correction unit in the error correction processing
The lock will be described with reference to FIG. Generally, recording information recorded on a DVD-RW
The report includes a plurality of data sectors 20 shown in FIG.
It has a physical structure. And one day
In the data sector 20, from the beginning, the data sector
ID information 21 indicating the start position of the ID 20 and the ID information 2
ID information error correction code (I
ED) 22 and spare data (for example, CPM) 23
A data area 24 for storing main data to be recorded;
Error detection for detecting an error in the data area 24.
Outgoing code (EDC) 25, and this data
Recording to be recorded by a plurality of consecutive sectors 20
Information is organized. Next, using this data sector 20, E
The processing when configuring the CC block will be described with reference to FIG.
Will be explained. ECC block using data sector 20
When constructing a network, as shown in FIG.
In addition, one data sector 20 is divided horizontally every 172 bytes.
Each of the divided and divided data (hereinafter referred to as data
Lock 33. ) Are arranged vertically. At this time,
12 rows of data blocks 33 are arranged in the vertical direction.
Become. Then, each of the horizontal data arranged in the vertical direction is
10-byte ECC code (P
I (Parity In) code 31 to the data block 33
To form one correction block 34. This
In the stage, the correction block to which the ECC internal code 31 is added is set.
In other words, the clocks 34 are arranged in 12 rows in the vertical direction. That
Thereafter, this process is repeated for 16 data sectors for 20 minutes.
You. As a result, a 192 line correction block 34 is obtained.
You. Next, the above-mentioned 192 line correction block 34
Are arranged in the vertical direction.
Vertical correction block 34 from the beginning every byte
16 ECCs for each divided data
An outer code (PO (Parity Out) code) 32 is added. What
Note that the ECC outer code 32 is
Among them, it is also added to the part of the ECC inner code 31. By the above processing, 16 data sectors are obtained.
One ECC block 30 including 20 is shown in FIG.
It is formed as follows. At this time, one ECC block 30
The total amount of information contained in is (172 + 10) bytes x
(192 + 16) rows = 37856 bytes.
Of the data recorded in the actual data area 24, 2048 bytes x 16 = 32768 bytes Becomes The ECC block 3 shown in FIG.
0 indicates 1-byte data with "D #. *"
ing. For example, “D1.0” is placed in the first row and the zeroth column.
Indicates one byte of data that has been stored, and “D190.
170 "is the one bar located at row 190, column 170.
Shows the data of the site. Therefore, the ECC code 31
Are arranged in columns 172 to 181 and have an ECC outer code
32 is to be arranged from the 192nd line to the 207th line.
You. Further, one correction block 34 is a DVD-R
It is recorded continuously on W. Here, as shown in FIG.
As shown in FIG.
The configuration including both of the CC outer codes 32 is shown in FIG.
Correction of data arranged in the horizontal (horizontal) direction in (B)
Correction is performed using the ECC code 31 and the vertical direction in FIG.
Correction of data arranged in (vertical) direction is ECC outer code
32. That is, E shown in FIG.
In the CC block 30, the horizontal (horizontal) direction and the vertical direction
It is possible to correct errors twice in the (vertical) direction,
Error correction used in conventional CDs (Compact Disks)
Structured to enable more powerful error correction than normal processing
Have been. More specifically on this point, for example,
One correction block 34 (as described above, one line of ECC
A total of 182 bytes of data including the inner code 31
Subsequently, it is recorded on the DVD-RW. ) Up to 5 bytes
If it is, it can be corrected even if it is destroyed by scratches etc.
There is a DVD-RW flaw that is 6 bytes or more and one row is all
If it is destroyed due to, for example,
I cannot correct it. However, all rows are destroyed by scratches etc.
If you look at it vertically,
One byte of data is destroyed for one column of ECC outer code 32
It is only. Therefore, the ECC outer code 32 of each column is used.
Error correction, even if one correction block 34
Correct and correct errors even if everything is destroyed
It can be replayed. However, acquired wounds
Considering the occurrence of cracks, the horizontal (horizontal) scratches become large
Also leads to the next vertical row (horizontal) error
It goes without saying that it is kept to a minimum. By the way,
For this vertical error, 8 columns (erasure correction)
Correction is possible even if there are 16 columns (positive). Next, the ECC block 3 shown in FIG.
0 is a data sector 20
-How is recorded in RW, using FIG.
Will be explained. In addition, in FIG. 3, it shows with "D #. *".
The data to be written is the data described in FIG.
Yes, it is. Record ECC block 30 on DVD-RW
In doing so, first, as shown in FIG.
Blocks 30 are aligned horizontally in each correction block 34
By aligning and interleaving, 16
It is divided into coding sectors 40. At this time,
Recording sector 40 has 2366 bytes (3
7856 bytes ÷ 16) of information.
Some of the data sector 20 and the ECC code 31 or E
CC outer code 32 is mixed. However, each recording
At the beginning of the data sector 20
ID information 21 (see FIG. 2A) is arranged. Then, one recording sector 40
Is, as shown in FIGS. 3B and 3C, every 91 bytes.
The data is divided into data 41, and a sink H is added to each of them.
After that, the recording sector 40 in this state is 8--
By performing 16 modulations, one system is provided for each data 41.
The link frame 42 is formed. At this time, one sink
The frame 42 includes, as shown in FIG.
And data 43. Also, one Shin
The amount of information in the frame 42 is 91 bytes x 8 x (16/8) = 1456 bytes And the sync frame 42 is a continuous DV
Information is written to the D-RW disc. At this time,
Recording sector 40 has 26 sync frames
The system 42. This will be described with reference to FIG. Physical
First sector of ECC block consisting of 16 sectors
Is configured as shown in FIG. That is, the rows are data
172 bytes of data, 10 bytes of PI and 4 bytes of sink
Consists of 186 bytes and adds one row of PO to 12 rows of columns.
It consists of 13 lines. Sync from H0 to H25
26 bytes. By constructing the physical format described above,
By recording information on a DVD-RW disc,
8-16 demodulation and deinterleaving when reproducing the information
(See FIG. 3), the original ECC block 30
Can be restored, minimizing the amount of data blocks
Strong error correction as described above because it can be small
So you can do the right thing and reproduce the information most accurately
is there. Copyright protection located in the lead-in information area
Information about (eg media key block)
Recorded as a part of the data of the ECC block
I have. B. "Disk Form" The characteristic intermediate area in the recordable optical disk is the first example
FIG. 1 as a second example and a resist disk shown in FIG. 6 as a second example.
-Type optical disc having a disc substrate formed based on the
Read only area in which pit rows PA and PB are formed.
Area (areas P1, P2) and the recording area where the guide groove 1 is formed.
Raw area (area 1), playback-only area (area P1) and playback
Between the dedicated area (area P2) and the read-only area (area
Area P1) and the recording / reproducing area (guide groove 1)
A recordable optical disc having an intermediate area formed
You. As shown in FIG. 1, the pit row PA in the area P1
Of the pit row PB in the area P2
Bottom surface (glass master side) and bottom surface of guide groove 1 in area 1
Lath master side) and the bottom of the pit row PM
The original master side) is on the same plane, and as shown in FIG.
Bottom of pit row PA in area P1 (glass master side)
And the bottom of the guide groove 1 in the area 1 (the glass master side) and the middle
The bottom of the pit row PM in the area (glass master side) is the same
On the surface. The pitch with respect to the bottom of the pit row PM in the middle area is
The depth (optical depth) of the unit PM is, for example, as shown in FIG.
The depth (light) of the land on the read-only area (area P1)
Depth, relative to the bottom of the pit row PM (glass master side)
From the depth of the land in the region P1 to be reproduced, the depth a) in FIG.
Depth of land in the dedicated area (area P2) (optical depth,
Of region P2 with respect to the bottom surface (glass master side) of
Land depth, configured to decrease to depth b) in FIG.
Also, the pitch to the bottom of the pit row PM in the middle area is
The depth (optical depth) of the PM is, for example, as shown in FIG.
The depth of the land on the read-only area (area P1) (optical
Depth, relative to bottom of pit row PM (glass master side)
From the depth of the land in the area P1 and the depth c) in FIG.
Land depth (optical depth, pitch) of the raw area (guide groove 1)
Run of area 1 with respect to the bottom surface of the row PM (glass master side)
And is configured to decrease to a depth d) of FIG.
I have. By the way, as described above, the recording type optical disk
Even if it is a disc, recording and reproducing in the guide groove
A pit string containing raw information that cannot be rewritten
Discs that can be recorded with the guide groove depth and pit row
The pit depth must be the optimum depth for each
Both the bottom of the guide groove and the bottom of the pit are
Surface and excellent recording and reproduction characteristics,
Missing or missing pit signals at the inner groove
The disc must be free of racking signal disturbance.
You. Hereinafter, the optical disk will be described with reference to the drawings.
You. 1 and 6 show the cutting state of the master optical disc.
It is a figure for explaining. This optical disc has a guide groove
The groove depth and the pit depth of the pit row expose the guide groove resist.
Designed at different depths by illuminating and guide grooves
And the bottom of the pit row depth is formed by the surface of the glass master.
And switch from pit row to guide groove and from guide groove to pit row
The laser output of the resist exposure
Recording with an intermediate area to change the height of the guide groove
Type optical disk is proposed. Especially in FIG. 1 and FIG.
Area, push differential and pull
Differential phase detection) tracking
The range of the amplitude difference and offset level where the error signal is allowed
The signal of the surrounding can be obtained. As a result, the switching between the pit row and the guide groove is achieved.
The pit signal adjacent to the guide groove at the
Significantly affected by resist exposure due to resist thickness adjustment
Pit recording information
Accurate reading of recorded information in the recording area
It was confirmed that recording was possible. Preparation of a disc master for a recordable optical disc
Using a cutting device (not shown),
It is created in a simple process. A glass disk having a smooth surface was prepared.
Has the deepest shape on the glass disk surface (pit row depth
The resist is applied to a thickness corresponding to the depth (according to the above).
Two lasers (beams) emitted from the laser light source 1
On the optical path of the laser (beam) A of A and B,
An optical deflector to slightly swing the laser beam left and right, and a laser
And an optical modulator that changes the laser beam intensity
Have been. As shown in FIG. 1 or FIG.
The guide groove 1 with the bottom surface on the glass master disk surface on R
-Suitable for recording guide grooves using (beam) A
It is recorded as the laser light intensity (PA1). At this time the guide groove
1 is exposed to the surface of the glass master. Guide groove 1
Causes a slight wobble at a predetermined frequency. Also,
The user beam B is located beside the guide groove (the guide groove 1 and the guide groove 1).
Required for forming appropriate guide groove depth
Necessary for guide groove 1 since resist thicker than thickness exists
Laser light intensity (PB
Record in 1). Run during land prepit recording
Outputs the laser beam intensity required for dopply pit formation. At this time, the laser (beam) B is derived.
Insert a pinhole etc. on the beam expander 9
Then, the laser (beam) B is introduced into the objective lens 12.
Laser that reduces the size of the beam system and focuses it on the resist disk
ー (Beam) B
To expose, for example, one track width
May be included. At this time, the laser (beam) B
At a predetermined frequency, it may be slightly wobble. Next, as shown in FIG.
Following the formation of the guide groove 1 in the area 1), the pit area in the area P2
The guide groove 2 in the pit row PB) is
M) Laser suitable for recording guide groove 2 using A
It is exposed at a light intensity (PA3). At this time,
It is desirable to expose the bottom surface up to the surface of the glass master disk.
It is not specified in. In addition, laser (beam) B
Next to the guide groove part (between the guide groove and the land. Land)
Has the same resist thickness as the guide groove 1 (region 1).
As the next resist thickness increases, the pit row PB (region P
2) Intensify the laser light so that the required thickness of resist remains.
Adjacent to the pit row PB (area P2) at a degree (PB3)
In the guide groove 1, the same level as the pit row PB (area P2) is used.
It is formed with the laser light intensity that reaches the dying thickness. further
Necessary for land prepit formation when recording land prepits
Outputs the appropriate laser light intensity. At this time, the laser (B
B) B may also be slightly wobbled at a predetermined frequency.
No. Subsequently, it is referred to as a recordable optical disk.
In the area P1 where the identification information etc.
Suitable for recording pits using a beam (beam) A
Laser suitable for exposing the entire resist thickness direction
-Recorded in light intensity (PA2) and exposed to the surface of the glass master
Be lighted. At this time, the pit row PA is slightly
To wobble. In some cases, no wobble is needed. Thus, the recording / reproducing area (area 1)
From the read-only area (areas P1 and P2) and the recording / playback area
(Region 1), an intermediate region is provided, and the one
Guide grooves, pits and land bridges as latent images on board R
The pit LPP (address information) is recorded. In the next development step, the latent image is changed in shape.
And transferred to the metal master making process. Metal master
In the forming step, nickel or the like is
Of conductive film is coated, and nickel plating etc.
A nickel coating is formed. Then gold made of nickel
The genus master is peeled from the resist disc R, and the metal master
The board is cleaned and processed to a size that can be mounted on a molding die.
Is done. The metal master after processing is called a matrix. Molding metal
Attach the mother die to the mold and mold the plastic disc
A substrate is created. Then, a recording functional film is formed on the disk substrate.
(Recording layer) is formed, for example, a protective film is applied thereon
Or a substrate called a dummy substrate
Thus, a recordable disc is manufactured. The first example shown in FIG. 1 and the second example shown in FIG.
It is created in almost the same way, but in Figure 1 the middle area is a pit
Area P1 (pit row PA) as area (pit row PM)
And between the area P2 (pit row PB) and
Indicates that the middle area is a pit area (pit row PM) and the area P
1 (pit train PA) and area 1 which is a recordable area
Is formed differently. The depth of the pit row PM (light
Is the same as the depth (optical depth) of the region P1?
Small depth (optical depth) and cannot be accurately defined
It may be the depth (optical depth). Next, the format of the disk
explain about. Type (type) 1 shown in FIG.
The right side of the disk described later is compared using the comparative example of FIG.
Recordable groove to the left of the track in the raw pit P area
The state that is continuously switched to the G (groove) area
Is shown. In FIG. 8, “LPP” is formed on the land.
“Land pre-pit” indicates laser B is land pre-pit
This is the laser light output for pit formation. FIG. 1 and / or
FIG. 6 shows a data type (type 2) in FIG.
From the track in the read-only pit area on the right to the left
The depth changes between recordable groove G (groove) areas
Indicates that there is an area with pits that are intermediate areas
You. FIG. 5 shows the lead-in area of the disk (the inner peripheral area).
Direction) to the data area (outer direction).
You. This area is, as described above, where the disc manufacturing method is
Differently, the type (type) 1 described in the comparative example and the book
Type (type) 2 explained in the example
It is configured to be able to coexist as a mat
You. This format is type 1 signal.
Performance (recording / reproduction characteristics) is not very good, but manufacturing is comparative
It is easily possible, and the signal type is
Performance (recording / reproduction characteristics) is preferable, but the signal quality in the middle area
By coexisting two methods that require restrictions on performance
This gives the manufacturing method a degree of freedom. [0062] Lead-in area of type (type) 1
Is from the inner circumference which is the (1-1) recordable / reproducible area,
Outer periphery of a groove region having a depth of about λ / 12
With information such as addresses in the land area on the side of
Recordable / reproducible recording / reproducing with Doppit pit LPP
Area and differential push-pull track
Zone where an error signal is obtained,
system reserved zone, buff
er zone0, RW-physical form
at information zone, Refer
ence code zone, buffer zone
e1, linking loss area, (1-
2) Approximately λ / 4 depth and wobble, but run
Consists of pre-pits without do-pits LPP
A DPD tracking error signal is obtained and the recorded signal is read.
This is a read-only area that can be issued and information on copyright protection
And control data with lead-in information
zone (Readable emboss with
out LPP), (1-3) about λ / 12 depth
Consisting of wobble and land pre-pits with LPP
DPD tracking error signal composed of pits
This is a read-only area where recording and playback signals cannot be read.
Unreadable embass zone w
ith LPP, (1-4) wobble and groove area
Information such as addresses in the land area on the outer peripheral side of
Recordable and reproducible recording with land pre-pit LPP
It is an area where it can be used.
Buffer zone for obtaining racking error signal
e2, da for recording the user content that follows
It is divided in the outer circumferential direction in the order of taarea. here
In the upper right of each area, the opening of each area is shown.
Start address. Motion at the time of recording of type (type) 1
The work is shown in the Write Mode on the left side of FIG.
The operation is shown in Read Mode on the left side of FIG.
recording is recording operation, reading is reproduction
Operation, seek seek operation, or read a track
The skip operation is indicated, and read gen wclk is
And the recording clock signal by reproducing the
Signal and the operation of generating the recording timing signal.
You. Next, lead-in of type (type) 2
The area starts from the inner periphery of the (2-1) recordable / reproducible area, and
And the outer periphery of the groove region having a depth of about λ / 12
Land with information such as addresses in the land area on the side
Recordable / reproducible recording / reproducing having pre-pit LPP
It is a possible area and differential push-pull tiger
Initialzon where a locking error signal is obtained
e, system reserved zone, bu
fffe zone0, RW-physical fo
rmat information zone, Ref
erence code zone, (2-2) type
Code for judging 1 or type 2 is recorded
boundary flag zone1
I), boundary e, which is the intermediate region described above.
mbos zone1 (from a depth of about λ / 12,
Pit area formed to have a depth of about λ / 4
And has a wobble and differential push-pull
Tracking error signal is also DPD tracking error
(2-3) from a depth of about λ / 4
There is a wobble but no land pre-pit LPP
DPD tracking error signal composed of pre-pits
Is a read-only area from which a signal can be obtained and a recorded signal can be read.
With copyright protection information and lead-in information
control data zone (Readable
  emboss without LPP), (2-
4) type (type) 1 or type (type) 2
Boundary where the code for determining whether
  flag zone2 (may not be present)
Boundary emb, which has the opposite structure to the intermediate region
ossone 2 (from about λ / 4 depth to about λ /
A pit area formed to have a depth of about 12
Wobble and LPP are recorded (there is no LPP
Good) Differential push-pull track
Signal and DPD tracking error signal
And (2-5) a depth of about λ / 12
Prepits with bull and land prepits LPP
The resulting DPD tracking error signal is obtained and the recording signal
Unread, a read-only area from which the signal cannot be read
able embossone with LPP,
(2-6) Wobble and glue having a depth of about λ / 12
Address and other information in the land area on the outer peripheral side of the
Recording / reproduction possible with land pre-pit LPP
Push-pull tracking area
Buffer zone 2 where the error signal is obtained,
The order of the data area that records the user's content
It is divided in the outer peripheral direction. Here, shown in the upper right of each area
The starting address of each area is shown. t
The operation at the time of recording of type (type) 2 is represented by Wr on the right side of FIG.
item mode, and the operation at the time of reproduction is indicated by R on the right side of FIG.
This is indicated by an ead mode. recording is
Recording operation, reading is reproduction operation, and seek is
Indicates a click operation or an operation of skipping a track.
Ead gen wclk is the wobble signal and LPP address.
Play the dress and record clock signal and record timing
3 shows an operation of generating a switching signal. Boundary flag zone 1
And boundary flagzone2
It does not have to be in the place, but the boundary zone 1 and
And boundary flag zone2 is a disc
Type (type) 1 or type (type) 2
Therefore, in order to change the recording / reproducing method,
Control data zone with information and records
Pre-filled with LPP address information in possible area
Type of disc to be recorded and reproduced
e (type) 1 or type (type) 2 can be determined
Keep it. Next, type (type) 1 and type
This area is commonly re-used on (Type) 2 discs.
The case of recording and the case of recording will be described with reference to FIG.
I do. FIG. 9 shows the format of FIG. 5 as a track position.
Simplifies expression and includes physical content for recording and playback.
It is a diagram for explaining to the heart. FIG. 9 shows the track numbers from 1 to the track number.
9 toward the outer circumference in the direction of each track.
Corresponds to track number 1 of type 1
Each track of track number 2 is about λ / 12
Land area on the outer side of the groove area
Land pre-pit LPP with information such as address
This is a recordable and reproducible area that has
Tracking error signal of the initial push-pull
Initial zone, system response
rved zone, buffer zone 0, RW
-Physical format informat
ion zone, Reference code z
one, buffer zone1, linking
loss area. All regions in FIGS. 5 and 9
Wobble signals are arranged in the area. Track number
Each track of No. 3 and track number 4 is approximately λ /
It has a depth of about 4 and does not have a land pre-pit LPP.
DPD tracking error signal composed of pre-pits
C in a read-only area from which a signal can be obtained and a recorded signal can be read
control data zone (Readable
  emboss with LPP). G
Rack number 5, Track number 6, Track number 7
Each track has a depth of about λ / 12 and the land
DPD composed of pre-pits with pre-pit LPP
A tracking error signal is obtained and a recording signal is read out.
Unreadable em, a read-only area that does not come
boss zone with LPP. Trad
Tracks 8 and 9 are grouped
Address and other information in the land area on the outer peripheral side of the
Differential with land pre-pit LPP with information
The tracking error signal of the push-pull is obtained.
Recordable / reproducible information recordable / reproducible area (Data a
rea). Next, the track number of type (type) 2
No. 1 track, lead-in area is recordable / reproducible area
Groove region having a depth of about λ / 12 from the inner circumference
Information such as addresses in the land area on the outer peripheral side of
Recordable / reproducible recording with land pre-pit LPP
Recording / playback area and differential push-pull
Initial to obtain the tracking error signal of
zone, system reserved zone
e, buffer zone 0, RW-physica
l format information zone
e, Reference code zone, etc.
You. The track of track number 2 is an intermediate area. Tiger
Track No. 3 and Track No. 4 are approximately
It has a land pre-pit LPP with a depth of about λ / 4
DPD tracking error composed of pre-pits
-Read-only area where signals can be obtained and recorded signals can be read
Control data zone (Readab
le emboss without LPP)
You. The track of track number 5 is an intermediate area. Tiger
Track No. 6 and Track No. 7 are
Land pre-pit LPP with a depth of about λ / 12
DPD tracking error composed of pre-pits with
-A read-only area where signals can be obtained and recorded signals cannot be read.
Unreadable emboss zone
with LPP. Track number 8, track number
Each track of No. 9 is located on the outer circumferential side of the groove area.
Land prep with information such as addresses in the land area
Differential push-pull with pit LPP
Recordable / reproducible area where tracking error signal can be obtained
(Data area). In this arrangement, recording or reproduction is performed.
In case, type (type) 1 or type (type)
2 needs to be determined. type (type) 1 or
As a method of detecting type (type) 2, a disc is used.
At the time of insertion and startup processing, the lead-in information
Play control data zone with information
And type (type) 1 or type
If (type) 2 is recorded, determination is made based on this value. This
This can be read out in the same way on a recording or playback device.
I can do it. In another example of this example, bou
ndary flag zone1 and boundar
y flag zone2 as type LPP as LPP
(Ip) 1 or type (type) 2 is recorded
So, determine by reading this value at the time of recording
Can do things. This method is used when recording with a recording device.
Applicable. This type of recording is used for unrecorded
If detection is possible in the condition of the
It doesn't matter. Now, type (type) 1 is the track number
When recording in order from track No. 1 (shown on the left side of FIG. 5)
Write Mode), track number 1, track
No. 2, Track No. 8 and Track No. 9
Tracks are tracks to be recorded, as described above.
The wobble frequency appears on both sides of the track in all areas.
There are several signals.
The rotating speed signal is fed back to control the disc at a constant linear speed.
Control and generates a recording clock signal. Next,
Detects the LPP recorded in the
Generate and based on this detected timing signal
Recording at a predetermined linking timing of the track (FIG. 5)
In the Write Mode shown on the left, record
ing, Initial zone ~ Linking
loss area). And the track number
Linking address which corresponds to the address of track No. 3
Recording is stopped at the time of imaging and the reproduction state (W shown on the left side of FIG. 5)
write mode). The track of track number 3 has a recording area
It is composed of live pits and has no LPP signal.
The address is detected from the possible pits and based on the address.
And the playback operation (Write Mod shown on the left side of FIG. 5).
reading in e, Control data
  zone (Readable emboss wit
hout LPP)) line up to track number 4
U. Next, track number 5, track number 6, track number
No.7 tracks cannot reproduce pit signals
Track, but in this area the wobble signal and LP
Since there is a P signal, the wobble signal is
Signal and LPP address, and the recording clock and recording
(See Write Module shown on the left side of FIG. 5).
e, reading gen wclk, Unr
eadable emboss with LPP),
Similarly for tracks with track numbers 8 and subsequent
Start recording at linking timing, and perform subsequent recording
(Write Mode shown on the left side of FIG. 5)
Te recording, buffer zone 2
Data area). Here, type (type) 1
Then both sides of the track are symmetrical and all tracks are
Track numbers of rack number 2 and track number 3
And track number 4 and track number 5 respectively
Track, and track number 7 and track number 8
Differential push at the boundaries of each track
Tracking error signal due to double has amplitude difference
It can be obtained continuously to the extent. As described above, the boundary of the pit area is continuously
Since recording is possible, the RF signal can be continuously
At the time of reproduction (R shown on the left side of FIG. 5).
Ead Mode) calculates the tracking error by the phase difference method.
(DPD) (Differential push-pull is acceptable
From the track number 1 to the track number
No. 9 tracks are sequentially reproduced (Rea shown on the left side of FIG. 5).
reading in d Mode, Initial
  zone ~ Control data zone (R
eadable emboss without LP
P)). At that time, track number 5, track number
The signal is reproduced for each of the tracks 6 and 7
Because it is not possible, skip it (Read on the left side of FIG. 5)
  Seek, Unreadable in Mode
emboss with LPP ~ buffer zo
ne2), and then track number 8 and subsequent track numbers
Tracks are continuously played back (Rea shown on the left side of FIG. 5).
reading, Data ar in d Mode
ea). Next, type (type) 2 is changed to the track number.
When recording in order from track No. 1, track number
1, track number 8 and track number 9
A track is a track to be recorded. Tiger, the middle area
Track number 2 is recorded in type 1
Although it is a possible track, type (type) 2
The reason for the pit track is the track number
For track 2, the depth of the land on each side of the track
And the wobble signal and LPP necessary for recording
Even if the signal is recorded, the signal amplitude as in the previous track
Or the offset level of the signal
Recording clock and timing signal cannot be obtained accurately.
This is because they may not come. Similarly, the track number 5 in the intermediate area
The rack also has a different land depth on both sides of the truck,
Wobble signal and LPP signal required for recording are recorded
Signal amplitude and signal off as in the previous track.
At the offset level, an accurate signal cannot be obtained
Recording clock or timing signal
Recording clock or tie
It is only after the track number 6 that the
It may be performed on the truck of the rack number. The recording process is performed in order (Writ shown on the right side of FIG. 5).
e Mode) will be described. Track number 1
So, as mentioned above, there are wobble on both sides of the track
Frequency signal, and this frequency signal is detected and displayed.
The speed signal for rotating the disk is returned to
It performs constant control and generates a recording clock signal. Next
The LPP recorded on the land is detected and the address is
Generates a signal based on the detected timing signal
And record at the predetermined linking timing of this track.
(Re in Write Mode shown on the right side of FIG. 5)
cording, Initial zone ~ boun
Initiate the daily flag zone 1). Then, it corresponds to the track of track number 2.
Stop recording at linking timing when address becomes
And put it in playback mode. Track number 2 is the recording area
The area consists of non-reproducible or reproducible pits
And skip it (Write M shown on the right side of FIG. 5).
The dashed line of recording in the mode, bou
ndary flag zone 2). Track number
Track 3 is composed of pits whose recording area can be reproduced.
There is no LPP signal.
And detects the playback track number 4 based on the address.
(Tracks of Write M shown on the right side of FIG. 5)
reading, Control da in mode
ta zone (Readable emboss w
itout LPP)-boundary flag
  zone 2). Next, the track of track number 5 is
There is a possibility that the signal cannot be reproduced, and the LPP signal
Is a track that may not be able to be played, so skip it
You. Next, track number 5, track number 6, track number
No.7 tracks cannot reproduce pit signals
This area contains wobble and LPP signals.
Signal during playback of this track,
Reproduce LPP address, record clock and record timing
Create a new mode (Write Mode shown on the right side of FIG. 5)
Reading gen wclk, Unrea
double emboss with LPP), tiger
In the same way, for tracks with track numbers 8 and
Start recording at King timing and perform subsequent recording processing
(Re in Write Mode shown on the right side of FIG. 5)
coding, buffer zone 2-Data
  area). Here, in type (type) 2,
Tracks 2 and 5 with the middle area on both sides of the track
The track at this boundary is a push-pull system
Tracking error signals cause amplitude differences and offsets.
Recording and playback cannot be performed correctly,
Tracking error due to the rental push-pull method
The signal is continuous with a certain tolerance of the amplitude difference.
Obtainable. By arranging the areas in this way, the pit area
Since the boundary can be recorded continuously, R
The F signal can be obtained continuously, and the processing during reproduction (FIG. 5)
The Read Mode shown on the right side of
Phase difference method (DPD) (differential push
Track number 1)
To the track of track number 9 in order. this
At this time, track number 2 and track type 2
Track number 5, track number 6, and track number 7
Tracks cannot be read because the signal cannot be reproduced.
Seek in Read Mode shown to the right of 5,
Initial zone ~ boundary emb
oss zone 1, boundary flag
zone2-buffer zone 2), and then
Track number 3, track number 4, and track number
Each track with track numbers 8 and subsequent
Playback (in the Read Mode shown on the right side of FIG. 5)
Reading, Control data zone
e (Readable emboss withwithout
  LPP) ~ boundary flag zone
2, Data area). Further, suppose that type (type) 1 and ty
type cannot be detected for pe (type) 2 type
(Type) If it is set to 1, or by mistake
When e (type) 2 is detected as type (type) 1
However, this proposal is effective. In other words, in that case, in the case of recording
In addition, the recording device performs a recording process on the track of track number 2.
I'm going to do that, but with track number 2
LPP cannot be detected accurately even if the wobble signal can be detected
The recording is stopped halfway. Or signal processing
Recording processing while performing complementation processing of LPP signals in the logic circuit
Is performed. Suppose all tracks with track number 2
Even if it has been recorded, when playing this track,
The tracking error signal can be obtained from this area.
Therefore, the reproduction signal is read from the track of track number 2.
Although it cannot be output, continuous reproduction is possible without any problem. Trad
May not be able to read the LPP signal from track number 5
But there is no problem because it is read from the next track.
Recording and reproduction can be performed. FIG. 10 shows a third example of an information recording medium,
FIG. 4 is a diagram for explaining a code-in area and a data area.
You. Buffer of type (type) 2 shown in FIG.
  zone1 is unreadabl in FIG.
e emboss with LPP boundary
  The difference is that flag 1 is set. Again, all
Wobble signals are recorded in all areas, and in all areas
A wobble signal can be obtained. This disk is ty
pe (type) 3 is assumed. Recording of type (type 3)
Regarding the reproduction operation, Wr
item mode and read mode.
You. For this operation, see unreadable emb
oss with LPP boundary fla
Since it is the same as type (type) 2 except for g1,
Although the description of the overlapping operation is omitted, the type (type)
The description of the operation different from 2 is as follows. unrea
double emboss with LPP bou
The region of ndaryflag 1 is unreadabl
e Emboss with the same as the LPP area.
In the LPP in the area of
The difference is that g1 has been written. In FIG. 10, buf
The place to be recorded in fer zone1 is unrea
Because it is a double emboss area,
End recording with reference code zone
Then, the operation is switched to the reproduction operation. In addition, type
Regarding (type) 1, the type shown in FIG.
B) Since it is the same as 1), its description is omitted. FIG. 11 shows a fourth example of an information recording medium.
FIG. 4 is a diagram for explaining a code-in area and a data area.
You. Also in this case, the wobble signal is recorded in all areas.
The wobble signal can be obtained in all regions. Figure
Type (type) 4 and type (type) shown in FIG.
5) is a bo of type 2 shown in FIG.
unary emboss zone 1 and bound
The ary embosszone2 is changed to the ty shown in FIG.
Pe (type) 1 and type (type) 2
At the same address. boundar
y embass zone 1 and boundary
The emboss zone 2 is, as described above, the FIG.
1 Embossed as shown in the control table on the right.
This is an area composed of
4, wobble and LPP are recorded.
In e (type) 5, wobble is recorded, but LPP is
It does not have to be recorded. Or the LPP is recorded
It is an area that cannot be read with high accuracy even if it is read.
Also, the embossed pits in this area can
It may not be possible. type (type) 4 or type
e (type) 5 is identification information of LPP or
Or readable control data zone
e is recorded in a read-only area such as e. By making such a format,
11, the recording operation (WriteMode) and the reproduction of FIG.
The operation (Read Mode) is shown on the left side of FIG.
As described above, the recording operation (Write mode) is linki.
Record up to ng loss area (recordin
g) and switch to playback mode (reading),
readyable emboss with LPP territory
To reproduce the wobble signal from the
Generate the address signal from the LPP, and record
Generate the reading (reading gen wclk)
Next, record again from the buffer zone (recorder
ding). The playback operation is the same as in the previous example.
Therefore, the description is omitted. As described above, even in type (type) 4, t
The same recording / reproducing method can be used for type 5
Since it can be applied, it has the advantage of
I do. However, as described above, type (type) 4
The tracking signal is push-pull or differential
Although there is almost no problem with rental push pull, type
In the case of (type) 5, the tracking signal is differential
Although there is almost no problem with initial push-pull, push-pull
In le, the boundary emboss zone 1
And the boundary emboss zone 2
Since it is difficult to continue, type (type)
4 or type (type) 5
Or readable control data zone
By recording in advance in a read-only area such as e,
It is possible to respond to these discs. The disk type described in each of the above examples
When e (type) is classified, type (type) 1 and t
Since the type 4 is the same group,
In the description of this, type (type) 1 as a representative
Will be explained. In addition, type (type) 2, type
The same group as (type) 3 and type (type) 5
In the following description, this is referred to as type (type)
2 will be described as a representative. Make this configuration
By this, type (type) 1 and type (tie
2) two different manufacturing methods are acceptable, and
During playback and playback, a tracking error signal can be obtained continuously.
Can be linked without interrupting recording and playback.
DVD-RO that can be performed continuously and has been released
M and DVD video playback devices
This is to increase the added value of D-RW. In the above example, the read-only area and the recording area
Area or between the read-only area and the read-only area
Bou consisting of a pit area of one track as an intermediate area
ndary emboss zone1 and bounda
ry emboss zone 2 is provided.
Needless to say, the area may be larger than the height.
As can be seen in FIG. 5, type (type) 1 and type
(Type) The difference between 2 is negligible.
Boundary embo which is a boundary area of the dedicated area
ss zone1, the first read-only area, and the second read-only area
Boundary embos which is the boundary area of the application area
Using s zone2 as the boundary area, the address
If it cannot be detected, it is not necessary to record, or
It is an area where the playback signal does not need to be read accurately
Is defined as type (type) 1 and type (type
Step 2) can be in a common format. here
The names used are examples only and should not be changed.
It is not limited to a mat or disk structure. FIG. 12 shows a fifth example of an information recording medium,
FIG. 4 is a diagram for explaining a code-in area and a data area.
You. Also in this case, the wobble signal is recorded in all areas.
The wobble signal can be obtained in all regions. Figure
The type (type) 6 and the type (type) shown in FIG.
(Ip) 7 is b of type (type) 4 shown in FIG.
Bound ordinary embass zone1
As a day zone 1, type (type) 6
Indicates that the wobble and LPP are recorded in this area.
Recordable groove area and type (type) 7
Can be said that wobble is recorded in this area, but LPP is
An unrecorded emboss pit area and bound
The aryl emboss zone 2 is shown in FIG.
same as boundary emboss zone 1 and 2
Various wobble and LPP are recorded embossed
In the case of type 7, even if LPP is recorded
This is an area where the LPP does not need to be accurately read. type
e (type) 6 or type (type) 7
LPP or readable cont indicating identification information
pre-recorded in a read-only area such as the roll data zone.
Record it. If the area is defined as described above, the type
(Type) 6 and type (Type) 7 are common format
Can be set. At this time, when recording this area
In some cases, LPP is added to this area.
Record wobble signal in advance even if there is no signal
And the spindle speed signal can be generated.
It is possible to record by complementing the
You. Actually, the record of boundary zone 1
In case of type 6, two as described in the table
The ECC block of the latter half of the ECC block of Linki
ng Loss Area
In the case of type 7, the first half ECC block is
Recording is performed up to this point as ng Loss Area. Further, boundary emboss z
For the same reason, the wobble signal is recorded in one2 in advance.
In this case, the continuous generation of the recording clock for recording
Generation and spindle speed signal generation
6) and type (type) 7 while maintaining compatibility
Recording and reproduction processing is possible. In this case, in the middle area
Causes an offset in the push-pull signal,
An offset also occurs in the signal in a DC manner.
The cut signal through a band-pass filter, etc.
, The wobble signal can be obtained continuously without any loss
Or short-term wobble signal missing
So the continuity of the wobble signalToComplementing the circuit
Thus, this effect can be eliminated. In such a configuration
To maintain compatibility when performing recording and playback.
To enable the production of two discs,
It contributes to the development and spread of various formats. Note that this is common to all the embodiments.
But, boundary embosszone1 or
Boundary zone 1 is a disc-shaped disk.
The circumference is formed as a pit in the middle area.
The two ECC blocks arranged as
Is also a little bigger area. So, the second half ECC
Several sectors or several sync frames of a block are:
Read in the same way as the control data zone
This is a possible area. And this area is at least 2
Since the sync frame is secured, the control data
If you try to play the data zone,
By pulling in the PLL and detecting the sync.
Troll data zone right from the startread outThat
I can do it. boundary emboss zone 2
Similarly, two ECC blocks arranged as an intermediate area
Is an area slightly larger than one round.
Therefore, several sectors or several systems of the latter half ECC block
The link frame is the next area, unreadable emboss
Reads wobble signal and LPP signal in the same way as zone
This is a possible area. By using such a format,
12, the recording operation (WriteMode) and the reproduction of FIG.
The operation (Read Mode) is shown on the left side of FIG.
As described above, the description of the same processing as the above example is omitted,
Recorded in LPP or control data area
Obtain information of type 6 or 7, and in case of type 6,
The recording operation (Write mode) is boundary
  Linking the last ECC block of zone1
  Loss area and record up to this point (record
ding) and switch to playback mode (reading)
Eh, unreadable emboss with
The wobble signal is reproduced from the LPP area and recorded for recording.
Generate lock and generate and record address signal from LPP
Generate the timing of (reading gen wc
lk) and then record again from the buffer zone (r
resume). For type 7,
Recording operation (Write mode) is boundary
Link the last ECC block before zone1
ng loss area and record up to this point (rec
ordering) and switch to playback mode (reading).
Change, unreadable emboss with
  The wobble signal is reproduced from the LPP area, and
A clock is generated, and an address signal is generated from the LPP.
Generate recording timing (reading gen w
clk), then re-recorded from buffer zone
(Recording) is resumed. In addition, temporarily LPP
Or the type recorded in the control data area
Assuming type 6 without obtaining information of 6 or 7
To record a type 7 medium using the type 6 method
Since the wobble signal can be obtained continuously,
And continuously record even if LPP signal cannot be obtained
It is also possible to do. In this case, this area must be re-
When it is generated, the recorded signal cannot be read,
Track information and important information area information
There is no problem because there is no. Other playback operations
Is similar to the above example, and the description thereof will be omitted. FIG. 13 shows a sixth embodiment of the information recording medium.
It is a figure for explaining the concept of a setting state. FIG.
3 is the same depth (position) in the above description
In the sixth example, the bottom of FIG.
In the middle area with different guide grooves, pit row area
And the bottom of the guide groove area extends from the guide groove direction to the pit row direction.
As you head, it gradually becomes shallower at the specified slope, and
So that the bottom of the slot is flush with the bottom of the guide groove.
Has formed. Fabricated in this way over conventional methods
The modified part of the method is performed as follows. A guide groove having a bottom surface on the surface of the glass master
In the switching part of the train, the initial condition
Guide groove and land pre-pit exposed to the surface of the master
Use cutting conditions. Laser (light) A
Wobble signal. The wobble signal is registered
Laser with an optical polarizer so that the amplitude is 15 nm on the board
Light was swaying left and right. Of the guide groove to be cut
With a width of 0.3 μm and a groove depth of about 30 nm
The laser light intensity was used (PA3). Meanwhile, laser
(Light) B is a laser on which desired land pre-pits are formed
-Light intensity (PB3)
The depth of the lipid was set to be about 30 nm. Cut
Ting was performed at a constant linear velocity. Turntable, Regis
One turn of the turntable is equivalent to the track pitch,
Move at constant speed from the inner circumference to the outer circumference of resist board at 0.74μm
Was controlled so that Continuing, here, the inclination of 3 tracks
Each laser output while cutting the bevel
Was varied continuously. At this time, the laser (beam) A
Records a guide groove with a bottom surface that does not reach the surface of the glass master
The laser intensity was controlled to obtain a suitable laser intensity. At this time
The bottom of the guide groove is not exposed to the surface of the glass master. Wo
The bull signal should have an amplitude of 15 nm on the resist board.
The laser light is swung right and left by the optical polarizer. Katte
The width of the guiding groove is 0.3 μm and the groove depth is
The laser light intensity is set to about 30 nm. laser
(Beam) B is necessary for land pre-pit formation beside the guide groove.
Control to continuously reach the required laser intensity. Similarly, the pit row and the bottom face are
The part that switches to a certain guide groove is
(Beam) A has a bottom that does not reach the surface of the glass master
With a laser intensity suitable for recording one guide groove
Then, while cutting the three track tilt, the glass master
Suitable for recording guide grooves exposed to the surface of the surface
-Control to reach the strength continuously. Laser as well
(Beam) B light has a desired land pre-pit formed.
The three track inclination from the laser beam intensity
The depth of the land pre-pit that is cut while
Continuously to laser intensity set to about 30nm
Change. The inclination of the disk manufactured in this manner is
The track in the recordable intermediate area with
As described, push as a tracking method
Double or differential push-pull
Some offsets may occur, but this
Recording and playback are possible with a lock. Therefore, as in the previous example,
Recording cannot be performed in the push-pull system
A recordable area that does not need to be composed of lipids
I can do things. After recording in this area, the diff
It uses the Differential Phase Detect (DPD) method.
Stable tracking with almost no offset
You can do it. In the above example, it consists of a pit area
If the middle area has been overwritten or the middle area
Depending on the shape, the differential phase
Offset (DPD) method may occur
However, this example can solve the problem. Ma
The wobble signal is also in the LPP address in this intermediate area.
Since signals can be prepared in advance,
The recording operation of the power signal can be performed almost exactly.
In addition, the reproduction operation of the reproduction signal can be stably performed. FIG. 14 shows a sixth example of an information recording medium.
FIG. 4 is a diagram for explaining a code-in area and a data area.
You. Also in this case, the wobble signal is recorded in all areas.
The wobble signal can be obtained in all regions. Figure
The type (type) 6 shown in FIG. 14 corresponds to the t (type) shown in FIG.
14 is substantially the same as the type 6 shown in FIG.
The type (type) 8 is the type shown in FIG.
(Type) In the boundary zone 1 of 7,
Wobble is recorded in this area, but LPP is recorded.
The embossed pit area is not
In the type (type) 8, it is inclined as described above.
Recordable group where wobble and LPP are recorded
And the LPP in this area is L
This is an area where the PP does not need to be accurately read. boun
FIG. 12 shows the daily emboss zone 2.
Same as the boundary emboss zone 2
Wobble and LPP are recorded embossed pits
In the case of type 8, even if LPP is recorded, L
This is an area where the PP does not need to be accurately read. type
Indicates (type) 6 or type (type) 8
LPP or readable contr
ol data zone, etc., recorded in a read-only area
Keep it. For example, the identification information is set to Disc Phys of LPP information.
0: b for Media type 3 (media type) of ical code
No boundary 1: Defined as bounded
Can be. If the area is defined as described above, the type
(Type) 6 and type (Type) 8 are common format
Can be set. At this time, when recording this area
In this case, if the LPP is temporarily
Even if the address signal cannot be detected from the wobble signal,
Spindle speed signal can be generated and LPP address signal
It is possible to complement the signal in the circuit and record it. Real
In this case, in the case of the recording of the boundary zone 1,
EC of 2F1F0h for both type 6 and type 8
C block as Linking Loss Area
And record up to here. Also, boundary emboss z
For the same reason, the wobble signal is recorded in one2 in advance.
In this case, the continuous generation of the recording clock for recording
Generation and spindle speed signal generation
6) and type (type) 8 while maintaining compatibility
Recording and reproduction processing is possible. In this case, in the middle area
Causes an offset in the push-pull signal,
An offset also occurs in the signal in a DC manner.
The cut signal through a band-pass filter, etc.
, The wobble signal can be obtained continuously without any loss
Or short-term wobble signal missing
Therefore, the continuity of the wobble signal must be complemented by a circuit.
Thus, this effect can be eliminated. In such a configuration
To maintain compatibility when performing recording and playback.
To enable the production of two discs,
It contributes to the development and spread of various formats. By making such a format,
14, the recording operation (WriteMode) and the reproduction shown in FIG.
The operation (Read Mode) is shown on the left side of FIG.
As described above, the description of the same processing as in the above example is omitted.
Is recorded in the LPP or control data area.
Information of type 6 or 8
In this case, the recording operation (Write mode) is bound.
link of last ECC block of ary zone1
ing loss area and record up to this point (re
cording) and the playback mode (reading)
Switching, unreadable emboss wit
h To reproduce the wobble signal from the LPP area and record it
And generates an address signal from the LPP.
Generate recording timing (reading gen
wclk), then re-recorded from bufferzone
(Recording) is resumed. Also, type 8
When recording in the boundary zone 1,
When using push-pull method as racking error
Is within the allowable range for the tracking error signal.
Since a set signal is generated, when recording this area
Only measure the offset value in advance, and
Control to cancel the offset
Thus, more accurate recording can be performed. Also, if L
The data recorded in the PP or control data area
Type 6 without obtaining information of type 6 or 8
Assuming that a type 7 medium is recorded by a type 6 method
In this case, the wobble signal can be obtained continuously.
Even if the LPP signal cannot be obtained,
It is also possible to record. The boundary zone described here
The expression of e1 and e2 is sandwiched between regions having substantially different depths.
It is expressed in this way because it is an isolated area, but it is different
As an expression method, it may be expressed as a normal data area.
No. Especially, the difference between Type 6 and Type 8 is slight,
Data area, and the characteristics of the data in it
Then, for example, the jitter of the reproduction signal of type 6 is 8% or less.
However, the jitter of the type 8 reproduced signal is 10% or less.
In other words, the error rate of the type 6 LPP reproduction signal is a
% Or less, but the error level of the type 8 LPP reproduction signal
The rate is less than b% or the type 6 tracking signal
Signal offset is less than c%,
Data that King signal offset is less than d%
May be defined as a type difference. Also different
The expression method is defined for the normal data area.
The standard values for both Type 6 and Type 8
By not precisely defining
There is a way to express a group in common. In this example, b
gradually change the depth of the boundary zone1
It was configured so that the boundary zone 2
The only difference is that it is composed of pits.
You may comprise so that a depth may be changed individually. The seventh example corresponds to the contents of the example of FIG.
Is defined as the type 1 type in FIG.
You. The description of FIGS. 14 and 5 has already been described, and thus will be omitted.
However, the differences are as follows. In other words, a big difference
Considering the points, the type (type) 6 shown in FIG.
Is the type (type) 6 shown in FIG. 12 and FIG.
Changed the type (type) 1 and the name of the area
14 is substantially the same, and the type shown in FIG.
Ip) 8, the boundary zone 1 is
And the wobble and LPP are recorded
If a recordable groove area is used, the type 1 b
Since it is the same area as the buffer zone 1,
ferzone1 can be defined. Similarly, figure
The boundary emboss zone shown in 14
e2, wobble and LPP are recorded embossed
Because it is a pit area, unreadable emb
oss with the same area as the LPP area,
unreadable emboss with LP
It can be defined as a P region. According to this definition, the type 6 and the type shown in FIG.
Type 8 can be the same figure as Type 1 in FIG.
You. The type 6 and type 8 described in FIG.
Does not exist. However, in FIG.
There are two boundary zones
Two boundary areas (the boundary tracks are recordable
Read-only track consisting of tracks or pits in the area
One or several tracks near the boundary of the
Especially push in tracking error signal as mentioned
The pull tracking error signal is the amplitude level of the normal signal area.
May be different from bell or offset level. This push-pull tracking error signal
The amplitude of the original recording area and the read-only area
Different width levels, defined in each area
However, in this boundary region, as shown in FIG.
Of the recordable area when crossing the track
The amplitude of the push-pull tracking error signal is
Upward peak value P1 and downward peak value based on pressure
P2 and upward with reference to the center voltage of the area near the boundary
And the downward peak value P4,
3 / (P1 + P2)> 0.2 and P4 / (P1 + P2)
> 0.2. This 0.2 value is the push-pull
Even if the amplitude of the racking error signal decreases,
When recording or reproducing this area,
This is a value necessary for control not to become unstable. In addition,
The value of 0.2 varies depending on the measurement method, etc.
And a range of about 0.15 to 0.3 is desirable. example
Push-pull in the recordable area other than this border area
The offset amount of the signal amplitude is set to the asymmetry standard.
Using the formula (P1-P2) / (P1 + P2)
Value is defined. Use this formula to define the boundary area
When trying to do so, as shown in FIG.
Is symmetric and the amplitude is extremely small,
Although the expression (P1-P2) / (P1 + P2) is satisfied,
Racking servo may become unstable. Also reverse
As shown in FIG. 15, the amplitudes of P3 and P4 are symmetric,
When the tracking servo is stable and the amplitude is small
Is also satisfied by the value of (P1-P2) / (P1 + P2).
Disk that cannot be added
It becomes a factor to make it worse. So introducing this new formula
Defining the leverage area is important for discs with this method.
Most preferred. By making such a format,
5, the recording operation (Write Mode) and the reproduction in FIG.
The operation (Read Mode) is as shown on the left side of FIG.
But is determined to be of this type
At this stage, the recording operation (Writemode)
l of the last ECC block in the secondary zone1
Inking loss area and record up to here
(Recording). However, as mentioned above,
The area near the linking loss area is the boundary
Field, where the amplitude of the tracking error signal is small
If the offset level of the tracking error signal is
This area may be different from the track
Gain and offset during tracking control only when recording
Stable recording control by changing the cut control value
I can do it. Also, the tracking error signal in this area
Measure the offset level of the signal in advance, and
Therefore, the control value may be changed. Then play
Mode (reading) and control data
Data area, unreadable emboss
  The wobble signal is reproduced from the with LPP area and recorded.
Generates a clock for recording and sends an address signal from LPP.
To generate the recording timing (reading
gen wclk) and then from the buffer zone
Recording is resumed again. This,
Unreadable em from the control data area
The boundary area between the bus with LPP areas is also a boundary area.
At this time, as described above, the tracking error signal
If the width is small, the offset of the tracking error signal
The level may be different from other tracks
Therefore, only when reproducing this area,
Input and offset control values for stable recording.
Recording control can be performed. Also, track in this area
Measurement of the offset level of the
It is permissible to change the control values according to the results learned.
No. Next, the reproduction operation (Read Mode) in FIG.
When discs of this type are determined,
When reproducing the control data area, the bound
link of last ECC block of ary zone1
move to the vicinity of the ing loss area
It is normal to play the first area of the rule data area
In which case, as described above, this linking
  The area near the loss area is a boundary area,
If the amplitude of the tracking error signal is small,
The offset level of the error signal is different from that of other tracks.
It's time to play this area because it may be
Gain and offset control values during tracking control.
Pass by performing stable recording control by changing
You can do it. Also, tracking error in this area
The result of learning by measuring the offset level of the signal in advance
May change the control value. In addition, this
Area has no meaning such as 0 data as information.
Data is recorded with incorrect information.
If you do, you can skip it. Con
Reproduce the troll data area and provide necessary lead-in information and
After obtaining information about copy protection,
Move to the area and perform content playback processing. Note that the manufacturing method, configuration,
The name is an example, and the present invention is not limited to the manufacturing method and correction format.
However, the present invention is not limited to a slot or disk structure. [0105] According to the present invention, the boundary of the information recordable area is
In the vicinity of the field, the recording / reproducing signal characteristics are improved and
An excessive offset signal was generated in the king error signal
And the tracking error signal is missing.
To cause problems such as reduced trackability
Has the advantage that there is no Also, different types of directories
It is said that recording can be done without problems even if it is a disc
Have the advantage.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram for explaining an example of an information recording medium. FIG. 2 is a diagram for explaining that data to be recorded on an information recording medium is divided into ECC blocks. FIG. 3 is a diagram for describing recording of ECC-blocked data in a predetermined area of an information recording medium in sector units. FIG. 4 is a diagram showing a physical format of one sector in a DVD-RW which is an example of an information recording medium. FIG. 5 is a diagram for explaining a lead-in area and a data area of the information recording medium. FIG. 6 is a diagram for explaining an information recording medium of a second example. FIG. 7 is a diagram for explaining an example of a cutting state in the information recording medium. FIG. 8 is a diagram for explaining another example of a cutting state in the information recording medium. FIG. 9 is a diagram for explaining a positional relationship between recording and reproducing operations related to the present invention. FIG. 10 is a diagram for explaining a lead-in area and a data area of the information recording medium of the third example. FIG. 11 is a diagram for explaining a lead-in area and a data area of the information recording medium of the fourth example. FIG. 12 is a diagram for explaining a lead-in area and a data area of the information recording medium of the fifth example. FIG. 13 is a diagram for explaining another example of the cutting state in the information recording medium of the sixth example. FIG. 14 is a diagram for explaining a lead-in area and a data area of the information recording medium of the sixth example. FIG. 15 is a diagram for explaining the amplitude of the tracking error signal of the seventh example. [Description of Signs] PA, PB, PM Pit strings P1, P2 Read-only area 1 Recording / playback area

   ────────────────────────────────────────────────── ─── Continuation of front page    (31) Priority claim number Japanese Patent Application 2000-211615 (P2000-211615) (32) Priority date July 12, 2000 (July 12, 2000) (33) Priority claim country Japan (JP)    Application for accelerated examination

Claims (1)

(57) [Claim 1] An information recordable area formed of a spiral or concentric information track, and from the inner periphery of the information track, a frequency signal and an address signal are recorded in advance; A first reproduction-only area in which a signal to be reproduced is recorded as pits and a frequency signal is recorded in advance, and a second reproduction in which a signal to be reproduced is recorded as pits and a frequency signal and an address signal are recorded in advance An information recording medium having a dedicated area, a boundary area between the information recordable area and the first read-only area, and a boundary area between the first read-only area and the second read-only area. in the border area between, bets of the boundary region
The tracking error signal at the time of racking off is a ratio of the maximum amplitude in both directions from the center of the maximum amplitude of the tracking error signal at the time of tracking off of the information recordable area.
In the information recording medium recording apparatus for recording information on an information recording medium as defined Te, in order eggplant re continuously the boundary area, the information recording area, the first reproduction-only area and the first Tracking means for performing tracking based on the amplitude of the tracking error signal in the second read-only area; address complement processing means for complementing the address of the information recordable area and the address of the second read-only area; Up to the boundary between the area and the first read-only area, recording is performed based on the complemented address signal, and based on the complemented address signal of the second read-only area, the second read-only area is recorded. Recording means for recording from the information recordable area subsequent to the information recording area.