JP2003006997A - Optical disk, method for manufacturing optical disk, method for disk drive, and disk drive - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optimum method for recording information at shipping. SOLUTION: In an optical disk, the partial contents of the information on shipping, for example, verification information, are recorded as read-only information, and other contents, for example, system information and disk information are recorded as recording/reproducing information. Thereby, the information on the shipping provided with conditions such as high reliability, a certain amount of data and prevention of illegal tampering can be recorded. That is, by using recording/reproducing information, a problem is not caused even if the data amount increases, and illegal use by tampering is prevented by using the read-only information which cannot be tampered to check the information at the shipping as recording and reproduction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk, an optical disk manufacturing method, a disk drive method, and a disk drive device, and more particularly to recording shipping information on an optical disk and processing related to the recorded shipping information. is there.

[0002]

2. Description of the Related Art As a technique for recording / reproducing digital data, for example, CD (Compact Disk), MD (Min
i-Disk), DVD (Digital Versatile Disk), etc.
There is a data recording technology using an optical disk (including a magneto-optical disk) as a recording medium. The optical disk is a general term for recording media in which a disc in which a thin metal plate is protected by plastic is irradiated with laser light and a signal is read by a change in reflected light. The optical disc may be a CD or a CD-RO, for example.
M, DVD-ROM, read-only type, MD, CD-R, CD-RW, D
VD-R, DVD-RW, DVD + RW, DVD-RA
There is a type in which user data can be recorded as is known in M and the like. The recordable type can record data by utilizing a magneto-optical recording method, a phase change recording method, a dye film change recording method, or the like. The dye film change recording method is also called a write-once recording method. Since it is possible to record data only once and cannot be rewritten, it is suitable for data storage applications. On the other hand, the magneto-optical recording method and the phase change recording method allow rewriting of data and are used for various purposes such as recording various content data such as music, video, games and application programs.

[0003]

Incidentally, there is a circumstance that the rewritable disc, in particular, is desired to be shipped after recording various information (shipping information) on the producer side in advance. That is, as shipping information, the recording condition on the disc,
For example, it is desired to record disc information indicating a recording linear velocity, a recommended laser power value, and the like, and system information for excluding hacked devices. The shipping information is required to have high reliability, a certain amount of data, and not be tampered with.

The high reliability is required because, for example, if the disc information is not accurately obtained as the shipping information, the optimum recording condition may not be obtained by the device on the user side. When recording the content data, it may be possible to encrypt the data from the viewpoint of copyright protection, but if the key used for encryption cannot be obtained accurately from the system information, the encrypted data will be decrypted. This is because the content cannot be used and encryption cannot be performed when recording the content data.
For these reasons, the disc information and the system information recorded as the shipping information are required to have higher reliability than the user data recorded and reproduced.

The fact that the shipping information has a large amount of data to some extent is as follows. For example, if you think about updating the system master key when hacked, and consider the system (product) model unit as the exclusion unit, in order to update the master key, you need to change the master key in each unit. A certain amount of information is required as a bundle of key information for specifying. Because of this, the system information becomes information with a relatively large data size. In addition, even when considering the possibility of defects (scratches or stains) on the disc, it is necessary to be able to accurately read the information at the time of shipment from the viewpoint of the above reliability. (Recording the same data multiple times) is performed. Naturally, the amount of data as shipping information is inevitably large.

As for tampering prevention, the system information for excluding the hacked device as described above is of course meaningless unless tampering is prevented. If tampering is not strictly prevented, the function as system information cannot be fulfilled.

These conditions are required to be satisfied for the shipping information. Therefore, looking at the method of recording the shipping information on the disc, in general, for example, a reproduction-only information area such as an embossed pit is formed on the innermost peripheral portion of the rewritable disc. It has been considered to record system information and disc information in the area as read-only information. In this case, since the recording is performed by an unrewritable embossed pit or the like, it is suitable in the sense that the above tampering is prevented. However, the optimum data recording method as reproduction-only information (for example, data encoding method, error correction method, etc.)
, And it is different from the optimum data recording method for rewriting information. Therefore, if an optimum recording method is adopted for each, the disk drive device corresponding to that disk increases both the circuit scale and cost. Cause up. For this reason, if the recording methods are the same, the amount of information required for the shipping information cannot be recorded as the reproduction-only information, and the recording / reproducing data efficiency is lowered.

That is, if the information at the time of shipment is recorded as reproduction-only information such as embossed pits, it is good in terms of tampering prevention, but sufficient capacity for recording high-level system information required in recent years cannot be obtained. . On the other hand, since rewritable discs have been significantly increased in density in recent years, it is possible to record, for example, shipping information having a large data size as rewritable information, but in that case, falsification of shipping information is required. May occur. For this reason, a new recording method for shipping information has been required.

[0009]

In view of such circumstances, the present invention provides an optical disc and an optical disc manufacturing method suitable as a recording method for shipping information, and a disc drive method and a disc drive corresponding to the optical disc. The purpose is to provide a device.

Therefore, the optical disc of the present invention is an optical disc in which the non-rewritable read-only information is recorded and the recordable / reproducible information which is recordable and reproducible is recorded. The contents are recorded as the reproduction-only information, and the other contents are recorded as the recording / reproduction information. The reproduction-only information is information recorded in the data format as the pre-address information, and the shipping information recorded as the reproduction-only information is recorded in the data format as the pre-address information. Shall be done. Further, it is assumed that the pre-address information is recorded by wobbling grooves on the disc. The pre-address information is error-correction coded,
It is assumed that the shipping information incorporated in the data format as the pre-address information is further error correction coded. Further, the shipping time information recorded as the reproduction-only information and the shipping time information recorded as the recording / playback information are recorded at physical positions where they can be simultaneously read. Further, a part of the shipping-time information recorded as the reproduction-only information is verification information about the shipping-time information recorded as the recording / playback information. Further, the shipping time information recorded as the reproduction-only information and the shipping time information recorded as the recording / playback information are multiplexed and written. The shipping information recorded as the recording / reproducing information is
It is recorded encrypted. In that case, the encryption key information used for the encryption is recorded as the reproduction-only information. Further, the reproduction-only information is information recorded by the additional recording method, and as the information recorded by the additional recording method, it is assumed that a part of the shipping information is recorded. In this case, the information recorded by the write-once recording method is the disc-specific ID information, and the shipping information is recorded in the ID information.

According to the optical disc manufacturing method of the present invention, the reproduction-only information including a part of the contents at the time of shipping is recorded on the disc, and the shipping-time information is recorded on the disc in which the reproduction-only information is recorded. By writing the other contents as recording / reproducing information capable of recording and reproducing, an optical disc in which the above-mentioned shipping information is recorded as reproduction-only information and recording / reproducing information is generated. Here, the reproduction-only information is information recorded in the data format as the pre-address information, and the shipping information recorded as the reproduction-only information is incorporated in the data format as the pre-address information. Be recorded. The pre-address information is recorded on the disc by wobbling grooves. The pre-address information is error-correction-encoded, and the shipping information incorporated in the data format as the pre-address information is further error-correction-encoded. Further, the shipping-time information recorded as the reproduction-only information is recorded on the disc by the wobbling groove, and the shipping-time information is recorded on the disc by the wobbling as the reproduction-only information. By recording the shipping information as recording / reproducing information, the shipping information as the reproduction-only information and the shipping information as the recording / reproducing information can be read at the same time. Be recorded at the target position. The partial content of the shipping information recorded as the reproduction-only information is verification information about the shipping information recorded as the recording / playback information. The shipping-time information recorded as the reproduction-only information and the shipping-time information recorded as the recording / playback information are respectively overwritten. The shipping information recorded as the recording / playback information is encrypted and recorded. The encryption key information used for the encryption is recorded as the reproduction-only information. The reproduction-only information including a part of the shipping-time information is recorded by an additional recording system. The information recorded by the above-mentioned write-once recording method is ID information unique to the disc,
The shipping information is incorporated and recorded in the ID information.

The disk drive method of the present invention is an optical disk in which non-rewritable read-only information is recorded and recordable / reproducible record / playback information is recorded.
For the optical disc in which part of the contents of the shipping information is recorded as the reproduction-only information and other contents are recorded as the recording / reproduction information, the shipping-time information is recorded as the reproduction-only information. , And the shipping information recorded as the recording / playback information, respectively,
The shipping information recorded as the recording / playback information is
Verification is performed using the shipping information recorded as the reproduction-only information, and the operation corresponding to the optical disc is prohibited or permitted according to the verification result. When the shipping information recorded as the recording / reproducing information is encrypted and recorded, depending on the verification result, the decryption of the encrypted shipping information is prohibited or permitted,
The operation corresponding to the optical disc is prohibited or permitted.

The disk drive device of the present invention is an optical disk in which read-only information for reproduction only is recorded and recordable / reproducible information that can be recorded and reproduced is recorded.
In a disc drive device for an optical disc in which a part of the shipping information is recorded as the reproduction-only information and the other contents are recorded as the recording / reproducing information, laser irradiation is performed on the optical disc to reflect light. Head means for obtaining a signal; first decoding means for decoding the shipping information recorded as the reproduction-only information from the reflected light signal; and the reflected light signal,
A second decoding means for decoding the shipping information recorded as the recording / reproducing information, and the shipping information obtained by the second decoding means, and the shipping information obtained by the first decoding means. A verification means for verifying using information and a control means for permitting recording or reproduction on the optical disk according to the verification result of the verification means are provided. When the shipping information recorded as the recording / playback information is encrypted and recorded, the control means prohibits or permits the decryption of the encrypted shipping information according to the verification result. Then, the control for prohibiting or permitting the operation corresponding to the optical disc is performed. Also, the first decoding means performs a decoding process on the reproduction-only information recorded as a wobbling groove on the optical disc from the reflected light signal.
Alternatively, the first decoding means performs a decoding process on the read-only information recorded on the optical disc by the write-once recording method from the reflected light signal.

According to the present invention, the shipping information is recorded separately on the optical disk as reproduction-only information and recording / reproduction information. By recording the shipping-time information as the recording / playback information having a sufficient data capacity, it is possible to sufficiently record the shipping-time information even if the data amount thereof becomes large. Further, by recording the shipping-time information as the recording / playback information, there is a possibility of falsification. However, if it is possible to verify whether the falsification has been performed by using a part of the shipping-time information recorded as the reproduction-only information. ,
Unauthorized use can be prevented. That is, even if the data has been tampered with, if it can be determined that the data has been tampered with, it is possible to prevent unauthorized use by a method of not allowing operations such as recording or reproduction in the disk drive device.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an optical disc, an optical disc manufacturing method, a disc drive device and a disc drive method using shipping information thereof will be described as embodiments of the present invention. The description will be given in the following order. 1. Various optical discs as an embodiment 2. Contents of shipping information 3. Recording of shipping information by ADIP as read-only information 4. 4. Record shipping information by recording / playback information. Processing for disc manufacturing and shipping information (example 1) 6. Processing for disc manufacturing and shipping information (Example 2) 7. Example of cutting device 8. Example of disk drive device 9. Recording of shipping information by BCA as read-only information

1. Various Optical Discs as Embodiments First, an area structure, physical characteristics, and a wobbling track as an optical disc according to an embodiment will be described. Here, as an example of the optical disc according to the embodiment, three examples are schematically shown in FIGS. 1, 2, and 3, respectively, and read-only data (read-only data) and recording / playback data in each disc are shown. (Rewritable data) will be described.

The optical disk of each example is, for example, DVR (Data
& Video Recording), which may be in the category of discs recently developed. Typical physical characteristics of a DVR disc are as follows. That is, these optical disks are rewritable optical disks that record data by the phase change method. The disk size is 120 mm in diameter. Further, the disc thickness is 1.2 mm. From these points of view, it is a CD
(Compact Disc) type disc and DVD (Digital
It is the same as the Versatile Disc type disc. The area on the disc is the same as that of various conventional discs.
As shown in each of FIG. 3, the lead-in area 91, the data area 92, and the lead-out area 9 are arranged from the inner circumference side.
3 will be placed. The information area composed of these is an area of 44 mm to 117 mm in diameter.

The laser wavelength for recording / reproducing is 405n
m, and a so-called blue laser is used. NA is set to 0.85. Track pitch is 0.3
The channel bit length is 0 μm, the channel bit length is 0.086 μm, and the data bit length is 0.13 μm. The user data capacity is 22.46 GB. The average transfer rate of user data is set to 35 Mbit / sec.

In the disc 100 shown in each of FIGS. 1 to 3, the lead-in area 91 is an area in which various management information is recorded. The data area 92 is an area where user data is recorded, and for example, content data is recorded.

The recording of user data in the data area 92 is a groove recording method. That is, a track with a groove is formed on the disk in advance, and recording is performed on this groove. Such a groove GV is formed by wobbling (meandering) to express a physical address. Although the groove is schematically shown in FIG. 4, the left and right sidewalls of the groove GV are wobbled corresponding to address information and the like. That is, it meanders corresponding to a signal generated based on an address or the like. A land L is formed between the groove GV and the groove GV adjacent to the groove GV, and data is recorded in the groove GV in the disc 100 of this example. That is, the groove GV becomes a data track. It is also possible to use the land L as a data track to record data on the land L, or to use both the groove GV and the land L as a data track.

Tracks for recording data in this way are formed in advance as, for example, pregroups, and the side walls of the pregroups are wobbled in correspondence with address information, so that they can be obtained as reflected light information during recording or reproduction. The address can be read from the wobbling information provided. By adding the pre-address information as the wobbling groove in this way, it becomes unnecessary to provide address areas discretely on the track and record the addresses as pit data, for example. The data recording capacity can be increased. The absolute time (address) information expressed by such a wobbling groove is A
TIP (Absolute Time In Pregroove) or ADIP
(Adress In Pregroove).

In the disk 100 of this example, the groove GV is formed spirally from the inner circumference to the outer circumference, but as another example, the groove GV can be formed in a concentric shape. Further, the disk 100 is supposed to be rotationally driven by the CLV (constant linear velocity) method to record and reproduce data, but the groove GV is also CLV.
V. Therefore, the wobbling wave number of the groove for one round of the track increases toward the outer peripheral side of the disk.

In the disc 100 shown in FIG. 1A, a track is formed in the data area 92 by the groove GV, and user data is recorded on the track by the groove by the phase change method. Also lead-in area 9
1 also has a groove GV. That is, this Figure 1
The disc 100 of (a) has a groove formed in the entire information area on the disc. Then, in the lead-in area 91, various management information is recorded by wobbling the groove. Of course, the ADIP address information is recorded in all areas.

In the case of the disc 100 of FIG. 1 (a), as shown in FIG. 1 (b), the ADIP data by the wobbling groove is the reproduction-only data. Therefore, this reproduction-only data becomes information that can be recorded in the entire lead-in area 91, data area 92, and lead-out area 93. On the other hand, the recording / reproducing data is the pit mark data of the phase change system, and becomes the information recorded on the track by the groove in the data area 92. However, since tracks by grooves are formed in the lead-in area 91 and the lead-out area 93 as well, it is possible to record phase-change pit mark data, that is, recording / reproducing data in these areas.

The disk 100 shown in FIG. 2A is the same as that shown in FIG.
Similarly, a track is formed by the groove GV in the data area 92, and user data is recorded on the track by the groove by the phase change method. In the lead-in area 91, a data string of embossed pits is formed. That is, in this case, in the lead-in area 91,
Various management information is recorded by the emboss pit.
The wobbling groove is formed from the data area to the lead-out area 93, and ADIP address information is recorded in this section.

In the case of the disc 100 of FIG. 2A, as shown in FIG. 2B, embossed pit data in the lead-in area 91 and ADIP data by wobbling groove in the data area 92 and the lead-out area 93. Is read-only data. Further, the recording / reproducing data is the pit mark data of the phase change system, and becomes the information recorded on the track by the groove in the data area 92. However, since the track by the groove is also formed in the lead-out area 93, it is possible to record the pit mark data of the phase change method, that is, the recording / reproducing data in the lead-out area 93.

The disk 100 shown in FIG. 3A is the same as that shown in FIG.
Similarly, a track is formed by the groove GV in the data area 92, and user data is recorded on the track by the groove by the phase change method. The lead-in area 91 is also formed with the groove GV. The disc 100 of FIG. 3A has a groove formed from the lead-in area 91 to the lead-out area 93 as in the case of FIG. 1A. Then, in the lead-in area 91, various management information is recorded by wobbling the groove. The ADIP address information is recorded from the lead-in area 91 to the lead-out area 93. Further, a burst cutting area BCA is formed further inside the lead-in area 91.
The burst cutting area BCA will be described later, but management information such as a disc ID is recorded in this area as a type of write-once information that cannot be rewritten.

In the case of the disc 100 of FIG. 3 (a), as shown in FIG. 3 (b), the ADIP data by the wobbling groove is used as the reproduction-only data. Therefore, this reproduction-only data becomes information that can be recorded in the entire lead-in area 91, data area 92, and lead-out area 93. Also burst cutting area BC
The data in A (BCA data) is also read-only data. The recording / reproducing data is the pit mark data of the phase change system, and becomes the information recorded on the track by the groove in the data area 92. However, since tracks by grooves are formed in the lead-in area 91 and the lead-out area 93 as well, it is possible to record phase-change pit mark data, that is, recording / reproducing data in these areas.

For example, as in the above-mentioned three examples, the disc 100 according to the embodiment of the present invention records the reproduction-only data and the rewritable recording / reproduction data. The shipping information is recorded in advance during the manufacturing process, and the shipping information is characterized by being recorded separately as reproduction-only data and recording / reproduction data.

Hereinafter, the shipping information, the shipping information recording method, and the shipping / reproducing method using the shipping information will be sequentially described, but for the sake of explanation, it is assumed that the disk 100 of FIG. 1 is used. Of course, even when the disc 100 shown in FIGS. 2 and 3 is used, various operation methods described below can be applied. An example of recording the shipping information by using the burst cutting area BCA in the disc 100 of FIG. 3 will be described later.

2. Contents of shipping information In this example, in advance (before shipping) for the disc 100
As the shipping information recorded in, as shown in FIG.
Disk information DI, system information SI, verification information P 3
This is the type of information. The disc information DI is information indicating recording conditions such as a recording linear velocity and a recommended laser power value on the disc. That is, the information is used by the disc drive device on the user side to make various settings during recording and reproduction on the disc 100. The system information SI is information for system management, for example, information for excluding a hacked device and information such as an encryption key for encrypted content. The verification information P is for verifying whether or not the information that may be falsified in the shipping information, that is, all or part of the content portion recorded as the recording / reproducing data on the disc 100 has been falsified. Information. Therefore, the verification information P is basically recorded as read-only data on the disc 100.

As described above, in this example, the shipping information is recorded separately on the disc 100 as reproduction-only data and recording / reproduction data. Regarding this way of dividing, FIG. 5 shows Example 1, Example 2, and Example 3. First,
Since the verification information P cannot be correctly verified if it is tampered with, the verification information P is recorded as tamper-proof read-only data in any case.

In Example 1, the disc information DI and the system information SI are recorded as recording / reproducing data, and only the verification information P is recorded as reproducing-only data. In the example 2, the system information SI is recorded as the recording / reproducing data, and the disc information DI and the verification information P are recorded as the reproducing-only data. In Example 3, the disc information DI is recorded as the recording / reproducing data, and the system information SI and the verification information P are recorded as the reproducing-only data.

Any of these recording modes may be adopted as the embodiment of the present invention, but basically, the verification information P is read-only data, and the system information SI or the disc having a large data amount is used. It is preferable to record the information DI as recording / reproducing data. Depending on the amount of data, one of the system information SI and the disc information DI may be read-only data.

An example of the recording mode will be given. For example, in the disc 100 of FIG. 1, when the recording mode of the example 1 of FIG. 5 is used, the verification information P is A due to the wobbling groove.
It is recorded as DIP data. The area to be recorded can be any of the lead-in area 91, the data area 92, and the lead-out area 93. The disc information DI and the system information SI are recorded as phase change pit mark data. The recorded area is the data area 92, but in the case of the disc 100 of FIG. 1, a lead-in area 91 and a lead-out area 93.
Since it can be considered that the track is formed by the wobbling groove, the disc information DI and the system information SI can be recorded in the lead-in area 91 and the lead-out area 93 as phase change pit mark data.

3. Recording of shipping information by ADIP as read-only information For example, the disc 100 of FIG. 1 (disc 1 of FIGS. 2 and 3
00) also describes ADIP information by wobbling groove that is reproduction-only data, and a method of incorporating shipping information into ADIP information.

In FIG. 6, MSK (minimum shift keying) modulation, which is one of FSK modulation, is used as a wobble address modulation method in which a groove is wobbled, and a wobble detection window (wobble detection windo) at the time of demodulation is used.
w) shows a wobble waveform when L = 4 is used. In addition,
L indicates the length of the wobble detection window, and L =
4 means that the detection unit corresponds to a monotone wobble 4 wave period. Monotone wobble is MS
The wobble in the section where the wobble waveform due to the carrier frequency of K modulation is continuous.

FIG. 6 shows a data waveform (channel bit) as address information recorded in the wobbling groove.
When the waveform (data) of (d) is used, this data (d
ata) is pre-encoded to be pre-coded data shown in FIG. For example, the precode data is pre-encoded so as to be "1" at the timing when the data (data) is logically inverted. Then, MSK modulation is performed by this precoded data to form a stream as an MSK modulated signal as shown in FIG. 6 (f).

Here, two frequencies fw are used for MSK modulation.
1 and fw2 are used, and the frequency fw1 is set to a frequency that is one time the carrier frequency of the MSK modulation shown in FIG. The frequency fw2 is, for example, 1.5 of the frequency fw1.
The frequency is doubled (2/3 times the wavelength). Then, for example, as shown in FIG. 6 (a), when precoded data is "1", 1.5 waves of frequency fw2, which is 1.5 times the carrier, are associated,
Further, as shown in FIG. 6B, when the precode data is "0", one wave having the same frequency fw1 as the carrier corresponds. The 1.5 wave period of the frequency fw2 corresponds to one wave period of the frequency fw1 (= carrier frequency).

FIG. 7 shows a wobble waveform stream including an MSK modulation portion. The monotone bit in FIG. 7A is a section in which wobbles of a single frequency due to the frequency fw1 (= carrier) are continuous. A monotone bit is formed by 56 monotone wobble waves.

The ADIP bit of FIG. 7B also has a period of 56 monotone wobbles, one of which is 1
The ADIP unit, which is a two-tone wobble section, is M
The SK portion, that is, the MSK portion is a portion in which the precode data is MSK-modulated by the frequencies fw1 and fw2 as described above. This MSK section is a section including address information. Further, the remaining 44 monotone wobble sections of the ADIP bit are sections in which 44 wobbles of a single frequency due to the frequency fw1 (= carrier) are continuous.

The sync bit in FIG. 7C also has a period of 56 monotone wobbles, of which 28
The monotone wobble section serves as a sync unit, and the precoded data is a part MSK-modulated by the frequencies fw1 and fw2 as described above. The synchronization information is expressed by the pattern of this sync unit. The remaining 28 monotone wobble sections of the sync bit have a frequency fw.
It is a section in which 28 wobbles of a single frequency due to 1 (= carrier) continue.

This ADIP bit, monotone bit,
The sync bit corresponds to one bit which constitutes the address block (83 bits) described below, which becomes one address information (ADIP).

In the case of this example, for one RUB (recording unit block) which is a data recording unit, the ADI
It is assumed that three addresses are entered as the P address.
The situation is shown in FIG. A RUB is a data unit in which a run-in and a run-out are added to a data group in units of ECC blocks. In this case, one RUB is 498.
It is composed of a frame (498 row). And FIG.
In the section corresponding to one RUB like (a),
The ADIP will include three address blocks. One address block consists of 83 bits as ADIP data.
Since one bit block and one monotone bit correspond to 56 monotone wobble periods, one address block has 83 bits.
This corresponds to x56 = 4648 monotone wobble period, and 1RUB corresponds to 4648 x 3 = 13944 monotone wobble period.

FIG. 8B shows the structure of one address block. The 83-bit address block has 8
It consists of a bit sync part (synchronization signal part) and a 75-bit data part. In 8 bits of sync part, monotone bit (1 bit) and sync bit (1 bit)
4 units of sync blocks are formed. In the 75 bits of the data part, 15 ADIP blocks each including a monotone bit (1 bit) and an ADIP bit (4 bits) are formed. The monotone bit, sync bit, and ADIP bit here are those described in FIG. 7, and the sync bit and ADIP bit are formed with wobbles according to the MSK modulated waveform.

First, the structure of the sync part will be described with reference to FIG. As can be seen from FIGS. 9A and 9B, the sync part is composed of four sync blocks (sync block).
"0", "1", "2", "3"). Each sync block is 2 bits.

The sync block "0" is formed by a monotone bit and a sync "0" bit. sync
The block "1" is formed by a monotone bit and a sync "1" bit. sync block
"2" is formed by a monotone bit and a sync "2" bit. The sync block “3” is formed by a monotone bit and a sync “3” bit.

In each sync block, the monotone bit is a waveform in which 56 wobbles of a single frequency representing the carrier are continuous as described above, and this is shown in FIG.
It shows in (a). There are four types of sync bits, as described above, from sync "0" bit to sync "3" bit. Each of these four types of sync bits is shown in FIG.
The wobble pattern is as shown in 0 (b) (c) (d) (e).

Each sync bit is formed by a sync unit and 28 monotone wobbles in a 28 monotone wobble period. Then, the sync unit patterns are different from each other. 10 (b) (c) (d) (e)
6 shows a wobble waveform pattern in each sync unit section and a data pattern as address information corresponding thereto, as shown in FIGS. 6D and 6F, one channel as address information A bit corresponds to 4 monotone wobble periods. The channel bit stream as the address information is pre-encoded into pre-coded data as shown in FIG. 6 (e) and becomes a MSK-modulated wobble waveform pattern.

First, the sync "0" bit is shown in FIG.
In the section of the sync unit like
00 ”channel bit data stream, that is, as a precode data stream,“ 100010
A wobble waveform corresponding to "00001000000000000000" is obtained. Specifically, the part corresponding to “1” of the precode data is 1.5 waves of the frequency fw2, and the part corresponding to “0” of the precode data is one wave of the frequency fw1. The wobble pattern is MSK-modulated.

The sync "1" bit is "100100" in the section of the sync unit as shown in FIG.
It becomes a channel bit data stream of "0" and becomes "1000100000" as a precode data stream.
A wobble waveform corresponding to "0010000100000000" is obtained.

The sync “2” bit is “100010” in the sync unit section as shown in FIG.
It becomes a channel bit data stream of "0" and becomes "1000100000" as a precode data stream.
A wobble waveform corresponding to "000000100010000000" is obtained.

The sync "3" bit is "100001" in the section of the sync unit as shown in FIG.
It becomes a channel bit data stream of "0" and becomes "1000100000" as a precode data stream.
A wobble waveform corresponding to "000000000010001000" is obtained.

In this way, the sync bits of four patterns are arranged in each sync block, and if the disk drive device can detect any of the sync units of these four patterns from the sync part section,
It is designed to be synchronized.

Next, the structure of the data part in the address block will be described with reference to FIG. As can be seen from FIGS. 11A and 11B, the data part is formed of 15 ADIP blocks (ADIP blocks “0” to “14”). Each ADIP block is 5 bits.

Each 5-bit ADIP block consists of 1 monotone bit and 4 ADIP bits. In each ADIP block, as in the case of the sync block, the monotone bit has a waveform in which 56 wobbles of a single frequency representing a carrier are continuous, and this is shown in FIG.

4-bit AD in one ADIP block
Since IP bits are included, 15 ADIP blocks form address information with 60 ADIP bits. One ADIP bit is formed by ADIP units of 12 monotone wobble periods and 44 monotone wobbles.

FIG. 12B shows the wobble waveform pattern when the value of the ADIP bit is "1" and the corresponding data pattern of the address information, and when the value of the ADIP bit is "0". FIG. 12C shows the wobble waveform pattern and the corresponding data pattern as the address information. The ADIP bits “1” and “0” are represented by 3 channel bits in 12 monotone wobble periods (1 channel bit is 4 monotone wobble periods).

The value "1" as the ADIP bit is as shown in FIG.
In the section of the ADIP unit as shown in 2 (b),
It becomes a channel bit data stream of “100”, that is, “100” as a precode data stream.
The wobble waveform corresponds to "010000000".
Specifically, the MSK is set such that the portion corresponding to “1” of the precode data is 1.5 waves of the frequency fw2 and the portion corresponding to “0” of the precode data is one wave of the frequency fw1. It becomes a modulated wobble pattern.

The value "0" as the ADIP bit is shown in FIG.
As shown in 2 (c), in the section of the ADIP unit,
It becomes a channel bit data stream of "010", that is, "000" as a precode data stream.
The wobble waveform corresponds to "010001000".

As described above, the MSK modulation data is recorded in the wobbling groove, and the address format as ADIP information recorded in this way is as shown in FIG. The ECC unit as address data is 15 nibbles (1 nibble =
4 bits). This 15 nibbles, that is, 60 bits, corresponds to 60 ADIP bits excluding the 15 bits of the monotone bit among the 75 bits of the data part shown in FIG. 8B. That is, the data content of FIG. 13 becomes actual data included in one address block of FIG. Then, "1" and "0" as the information of each bit in FIG.
It is represented by the wobble pattern in (c).

The 15 nibbles consist of 9 nibbles of data and 6 nibbles of ECC parity. As the data of 9 nibbles (36 bits), the RUB number (RUB address) is 2
0 bit (RUB no.bit 0 to RUB no.bit 19), address number is 2 bits (address no.bit 0, address no.bit
1), the layer number is 2 bits (layer no.bit 0, laye
r no.bit 1), reserve (undefined) is 12 bits (rese
rve bit 0 to reserve bit 11) are allocated. And Nibbl
e based RS (15,9,7) Reed Solom code
on Codes), 6 for this 36-bit data
Nibble (24 bits) ECC parity (parity bit 0
~ Parity bit 23) is added.

The address of the corresponding RUB is recorded as a 20-bit RUB number. 1 RU as shown in Figure 8
Since three address blocks correspond to B, the same RUB number is recorded in each of the three address blocks. The 2-bit address number is one R
It is a number given to three address blocks corresponding to the UB. As the 2-bit layer number, a layer number when a multi-layer disc is assumed is recorded.

Here, although there are 12 reserved bits, in this example, for example, 4 bits (for example, reserve bit 8 to reserve bit 11) of the reserved bits are used.
Shall be used for recording shipping information. That is, 4 bits from one address block are collected into a predetermined number of bits to form, for example, the information word as the verification information P described above. Furthermore, by adding a relatively high degree of ECC parity to the information word as the verification information P,
The reliability of the verification information P is improved. As shown in the address format of FIG. 13, ECC with 24 bits of parity is applied to 36 bits of data, but this error correction capability is not very high. That is, the ADIP address data can be read for each address block, and strong error correction capability is not required. However, as described above, the shipping information itself is required to have high reliability. Therefore, it is preferable to add high error correction capability to the verification information P itself in addition to the error correction capability in the address format.

As an example, the following is performed. For example, considering that the circuit is also used in the disk drive device, it is preferable that the structure of the Reed-Solomon code is the same as that used in the BIS sub-block in the format of the recording / reproducing data described later. Therefore, as the structure of the Reed-Solomon code for the verification information P, for example, RS (6
2, 30, 33). In other words, the total code is 62 bytes, which is an information word of 30 bytes and a distance of 33 (= parity of 32 bytes).

Assuming that the reserved 4 bits are used as described above, since 2 address blocks are 1 byte, a code of 62 bytes can be composed of 124 address blocks. Then, out of the 62 bytes collected from the 124 address blocks, 30 bytes of the information word may be used as the verification information P in the shipping information. The remaining 32 bytes become the ECC parity for the verification information P.

In this example, the reserved 4 bits in the address format are used. However, in the case of the above address format, there are 12 bits of reserved, so 8 bits of them are used for shipping information or 12 bits. It is also possible to use all bits for shipping information. In addition, the shipping information incorporated in the ADIP address format is used as the verification information P,
This corresponds to the case of the example 1 of FIG. 5, and in the case of the example 2 of FIG. 5, the verification information P and the disk information DI may be incorporated in the ADIP address format in the same manner as above. In the case of Example 3 in FIG. 5, the verification information P and the system information SI may be incorporated in the ADIP address format. Of course, the Reed-Solomon code structure is RS (6
It is not limited to 2, 30, 33).

4. Recording of shipping-time information by recording / reproducing information Next, the structure of recording / reproducing data in the disc 100 of FIG. 1 (same for the disc 100 of FIGS. 2 and 3) will be described with reference to FIG. FIG. 14 shows the format of recording / reproducing data.

User data is 64 Kbytes, that is, 20 bytes.
Reed-Solomon coding is performed in units of 48 bytes × 32 sectors to form a data block of 216 rows × 304 columns. Further, 32 rows of parity are added to the LDC.
(Long Distance Code) Sub block is configured.
LDC is a correction code having a large inter-code distance. LDC
Sub block is RS (248,216,33) × 3
Block 04. Then, an LDC cluster (496 rows × 152 columns) is configured from the LDC sub blocks.

The physical address information and control information are
It is encoded in units of 0 bytes to form a BIS sub-block. That is, 18 bytes x 32 units of user control data (control information) and 9 bytes x 16
The physical address of the address is Reed-Solomon encoded to form an access block of 30 rows × 24 columns.
Then, 32 lines of parity are added to this, and the BIS
(Burst indicating subcode) A sub-block is constructed. BIS is a subcode for indicating the position of the burst error of the optical disc. The BIS sub-block is a block of RS (62,30,33) × 24. Then, a BIS cluster (496 rows × 3 columns) is constructed from the BIS sub-blocks.

Each of the LDC cluster and the BIS cluster, which is a recording / reproducing unit, is composed of 496 data frames. As shown, a 38-byte LDC and a 1-byte BIS are alternately arranged to form a 155-byte data frame. Then, RLL (1,7) modulation is applied to the data frame, and at that time, dcc
(Bits for making DC free) and frame sync are added to form a recording frame. In this case, the data modulated from the data frame is divided so that one group at the head has 25 bits and the remaining 27 groups have 45 bits, and 1-bit dcc is inserted after each group, and 20 bits are inserted at the head. 1288 bits (RLL) with a bit frame sync inserted.
A recording frame of (1,7) is converted into 1932 channel bits. Such a recording frame has a data structure recorded on a track in the data area 92 of the disc 100.

Here, for example, when the system information SI and the disc information DI are recorded by the recording / reproducing data as the shipping information, the system information SI and the disc information DI should be incorporated as the user control data. Alternatively, it is possible to record the system information SI and the disc information DI as the user data itself.

5. Processing for Disc Manufacturing and Shipping Information (Example 1) Up to here, as the shipping information, for example, a method of recording the verification information P as read-only data, and the disc information DI
The method of recording the system information SI as the recording / reproducing data has been described. In this manner, the disc 10 in which the shipping information is recorded separately as the reproduction-only data and the recording / reproduction data
The manufacturing procedure of 0 and the processing procedure of shipping information of the manufactured disk 100 in the disk drive device will be described.

FIG. 15 schematically shows a recording procedure of shipping information on the disc 100. Each of the illustrated blocks (201 to 204) is a circuit or device that performs a predetermined process. First, for the disc 100, data as system information SI and disc information DI is prepared. Also, an encryption key K as a secret key is prepared. The system information SI and the encryption key K with parentheses in the figure are information that cannot be seen from the outside.

The system information SI is encrypted by the encryption unit 201 using the encryption key K. When the process of encrypting the system information SI using the encryption key K is represented as f (SI, K), the process f (SI, K) in the encryption unit 201 concerned.
According to K), the encrypted system information Q will be generated. The encryption algorithm in the encryption unit 201 is not disclosed. The encrypted system information Q and the data as the disc information DI are supplied to the disc recording unit 204.

The encrypted system information Q is also supplied to the verification information generation unit 202, and the verification information generation unit 202 performs a predetermined calculation process g based on the encrypted system information Q,
The verification information P is generated. The verification information P is the disc manufacturing section 2
03. The disk manufacturing unit 203 is a disk manufacturing unit including a so-called formatter and cutting device, a stamping device, an injection device, and the like, and is a part that executes a master process and a disc-forming process described below. The configuration of the cutting device will be described later.

The verification information P is supplied to the cutting device of the disc manufacturing section 203. The cutting device is a device for forming the wobbling groove containing the ADIP data described above on the master disc. Then, the verification information P is incorporated into the ADIP address format shown in FIG. 13, and is recorded together with the ADIP address on the master disc as a wobbling groove based on the MSK modulation waveform. After that, a stamper is formed from the disc master and the disc 100 is manufactured by a stamping process using the stamper. That is, the disc 100 in which the verification information P is recorded as the reproduction-only data is generated.

Thereafter, the disc recording unit 204 writes the remaining shipping information, that is, the encrypted system information Q and the disc information DI, to the generated disc 100. The disc recording unit 204 is a disc recording device arranged in a so-called manufacturing process, and records the encrypted system information Q and the disc information DI on a track of a predetermined area of the disc 100 by the phase change recording method. At this time, the disc recording unit 204 sets various recording parameters such as laser power and recording linear velocity based on the disc information DI, and records the encrypted system information Q and the disc information DI.

Through the above steps, the disc 100 in which the shipping information is recorded by being divided into the reproduction-only data and the recording / reproduction data is manufactured, and shipped in this state.

FIG. 16 shows a procedure of processing relating to shipping information, which is executed by the disk drive device on the user side with respect to the disk 100 manufactured as described above.

The reproduction-only data reading function 3 shown in the figure is used.
01, recording / playback data reading function 302, verification function 30
3. The deciphering function 304 is a schematic representation of the parts realized by hardware or software in the disk drive device. As an example, considering the configuration of the disk drive device described later with reference to FIG. 21, the read-only data read function 301 is
For example, it corresponds to an ADIP address read circuit system including a system of the pickup 1, the matrix circuit 9, the MSK demodulator 24, and the address decoder 26. The recording / reproducing data reading function 302 corresponds to a data reading circuit system including, for example, the pickup 1, the matrix circuit 9, the binarization circuit 11, and the encoding / decoding unit 12. In addition, verification function 3
03 and the decryption function 304 are realized by software in the system controller 10.

As shown in FIG. 16, the disc drive device performs a process of reading the shipping information from the loaded disc 100. That is, the verification information P recorded as ADIP information by the wobbling groove as the reproduction-only data is used as the reproduction-only data reading function 301.
The read / write data read function 302 reads the encrypted system information Q and the disc information DI recorded by the phase change pit mark data as the read / write data.

The read verification information P and the encrypted system information Q are supplied to the verification function 303. The verification function 303 uses the verification information P to encrypt the encrypted system information Q.
Verifies that has not been tampered with. The following example can be considered as a verification method. For example, the verification function 303 is shown in FIG.
The verification information generating unit 202 of No. 5 is provided with a function of generating verification information P from the encrypted system information Q. Then, the verification function 303 uses the encrypted system information Q read by the recording / playback data reading function 302 to generate verification information by the algorithm. Then, the generated verification information is compared with the verification information P read by the read-only data reading function 301 to confirm whether they match. If a match is obtained here, it can be determined that the encrypted system information Q has not been tampered with, and if they do not match, it can be determined that tampering has been performed. The verification function 303 transfers such information (OK / NG) of the verification result of the presence or absence of falsification to the decryption function 304.

The decryption function 304 decrypts the encrypted system information Q by the private encryption / decryption algorithm using the private encryption key K, that is, the encryption key K used in the encryption unit 201 in FIG. , Get the original system information SI. However, this decryption processing is permitted according to the verification result of the verification function 303. That is, only when the verification result is OK, the decryption processing is performed and the system information S
If I is obtained and the verification result is NG, the decryption process is prohibited and the system information SI cannot be obtained.

When the system information SI is obtained, the disk drive device performs necessary processing using the system information SI, such as exclusion of hacked devices, copy restriction of content data, and other copyright protection. It becomes possible to execute the processing that is taken. Further, when the recording operation or the reproducing operation is executed by clearing those conditions or targeting the content or the like for which the condition is not imposed, the disc information DI read by the recording / reproducing data reading function 302 is used. Thus, parameters of various circuit systems such as laser power and linear velocity are set, and an appropriate recording operation or reproducing operation is executed.

When the verification result is NG and the system information SI
If is not obtained, the processing using the system information SI becomes impossible. As a result, the disc drive device cannot execute the recording / reproducing operation for the disc 100. That is, since the system information SI (encrypted system information Q) is recorded on the disc 100 as the recording / reproducing data, it is not impossible to falsify it. By handling the disk 100 as an invalid disk, unauthorized use due to falsification is prevented.

The shipping information recording procedure on the manufacturer side and the shipping information processing procedure on the user side disk drive device described with reference to FIGS. 15 and 16 are summarized in FIGS. 17 (a) and 17 (b). become that way. That is, as the shipping information recording procedure, as shown in FIG. 17A, first, system information SI and disk information DI are prepared (F
1) The system information SI is encrypted with the encryption key K to generate encrypted system information Q (F2), and further the verification information P is generated using the encrypted system information Q (F3). Then, the wobbling groove is formed on the disc master by the cutting device based on the ADIP information including the validation information P, so that the validation information P is recorded on the disc as read-only data (F4). When the disc 100 is manufactured from the master through steps such as stamping, the encrypted system information Q and the disc information DI are recorded as recorded / reproduced data on each manufactured disc 100 (F5). And it will be shipped.

When the disc 100 is loaded in the disc drive device on the user side, first, as shown in FIG. 17B, the verification information P, the encrypted system information Q,
The disc information DI is read (F11). Then, it is verified using the verification information P whether the encrypted system information Q has been tampered with (F12). If it has been tampered with, decryption of the encrypted system information Q is prohibited and the disc 100 is made an invalid disc (F13).
If there is no tampering, the encrypted system information Q is decrypted,
The system information SI is retrieved (F14). Then, the normal processing using the system information SI and the disk information DI is started (F15).

By recording and processing the shipping information in this way, the following effects can be obtained.

First, since the disc information DI and the system information SI are recorded as the recording / reproducing data of the disc 100, it is possible to sufficiently record them on the disc 100 even if the information becomes large in capacity. For example, when the disc 100 is considered as the above-mentioned DVR disc,
The amount of user data that can be recorded as recording / playback data is enormous at 22.46 GB. Therefore, for example, even if several hundred kilobytes to several tens of megabytes are required as the system information SI, it is possible to record with sufficient margin (enough user data capacity is secured). With this, high-level information can be recorded as system information SI,
It is possible to realize an advanced copyright protection function.

Further, by recording the system information SI as the recorded / reproduced data, there is a possibility of abuse due to tampering, but by verifying the presence / absence of tampering by using the verification information P recorded as the reproduction-only data that cannot be tampered with. If the disc has been tampered with as described above, the disc 100 can be invalidated.
Therefore, it is possible to prevent unauthorized use due to falsification. Also, the system information SI is the encrypted system information Q as the disk 10
By recording 0, the security of the system information SI can be improved.

Further, as described above, the verification information P can be data of about 62 bytes and can be easily recorded by incorporating it in the ADIP address format. Further, the information word of the verification information P itself is about 30 bytes, and EC
By adding the C parity, it is possible to secure sufficient reliability of the verification information P. If the Reed-Solomon structure in the verification information P is the same as the Reed-Solomon structure in the BIS sub-block as described above, the error correction processing circuit system in the disk drive can also be used. further,
By incorporating the verification information P in the ADIP address format, the verification information P can be decoded by the decoding function for the ADIP address in the disk drive device, and the verification information P does not need a dedicated decoding system. For these reasons, the structure of the disk drive device is not complicated.

By the way, the recording of the verification information P as the reproduction-only data and the system information S as the recording / reproduction data.
Regarding the recording of I (encrypted system information Q) and the disc information DI, it is conceivable to perform multiple recording.

First, since the verification information P does not have much capacity, there is no problem in recording the same verification information P a plurality of times as read-only data, such as double writing, triple writing, and quadruple writing. Further, since the recordable capacity of the record / playback data is enormous, it is not a problem that the system information SI (encrypted system information Q) and the disk information DI are similarly recorded in multiplex. Therefore, it is preferable that the disc manufacturing unit 203 and the disc recording unit 204 of FIG. 15 multiplex write the verification information P, the encrypted system information Q, and the disc information DI a plurality of times. By performing multiple writing, it is possible to increase the probability of normal reading even if there is a defect (scratch or dirt) on the disc, and it is possible to increase the reliability of shipping information.

Also, the verification information P as reproduction-only data
Recording and system information SI as recording / playback data
Regarding the recording of the (encrypted system information Q) and the disc information DI, it is conceivable to record them at a physical position where they can be read simultaneously by the disc drive device.
In the example of incorporating the ADIP address format, the verification information P of 30 bytes of actual data can be recorded in 124 address blocks. 6 of 124 address blocks
Equivalent to 4 RUB. In the 64 RUB section, 4 Mbytes of record / playback data can be recorded.

That is, the capacities of the encrypted system information Q and the disk information DI are 4 Mbytes, and the verification information P is 30.
Assuming that the size is 62 bytes (including ECC parity), the verification information P is recorded as a wobbling groove in the section of 64 RUB, and the encryption system using the phase change pit mark is recorded on the groove track as the section of 64 RUB. Information Q and disc information DI can be recorded. In such a case, the disc drive device reads the 64 RUB section to simultaneously read the verification information P, which is read-only data, and the encrypted system information Q and the disc information DI, which are recorded / reproduced data. It becomes possible to read. As a result, the efficiency of reading the shipping information in the disk drive device is realized.

In the case of multiple writing as described above,
It suffices to prepare a plurality of such 64 RUB sections. For example, in the case of quadruple writing, a section of 256 RUB may be set as a recording area for shipping information. In addition, such a region of 64 RUB × n (n is the number of multiple writing) is shown in FIG.
It may be prepared in the lead-in area 91 of the disc 100 (or FIG. 3), or the data area 92.
May be set as the shipping information recording area. In the case of the disc 100 of FIG. 2, by setting a part of the data area 92 as a shipping information recording area, simultaneous reading is possible.

6. Processing for Disc Manufacturing and Shipping Information (Example 2) With reference to FIGS. 18 and 19, the manufacturing procedure of the disc 100 in which the shipping information is recorded separately as read-only data and recording / playback data, and the manufactured disc 100, Another example of the shipping information processing procedure in the disk drive device will be described. Detailed description of the same parts as those in FIGS. 15 and 16 will be omitted.

The manufacturing procedure of FIG. 18 differs from that of FIG. 15 in the processing of the encryption key K. The system information SI is encrypted with the encryption key K to be the encrypted system information Q, and the encrypted system information Q to the verification information P
Is generated in the same way. However, when the verification information P is supplied to the disc manufacturing unit 203 and is used for the cutting process, the encryption key K is also supplied to the special recording function unit 205 of the disc manufacturing unit 203. Special recording function unit 20
5 is a partial function of a data formatter that generates a wobbling groove at the time of cutting processing,
The data as the encryption key K can be recorded as ADIP information in a specially set area which is not open on the disc. Alternatively, the encryption key K is recorded by a method that has not been published. That is, when the master disc is cut, the wobbling groove is formed based on the ADIP data in which the verification information P is incorporated as in the case of FIG. 15, and the encryption key data is incorporated in a certain special area. The wobbling groove is formed on the basis of the ADIP data obtained. As a result, the verification information P and the encryption key K are recorded as reproduction-only data. The same applies to the recording of the encrypted system information Q and the disc information DI.

As shown in FIG. 19, the disk drive device is basically the same as that shown in FIG. Read Q and disc information DI. And verification function 3
03, the decryption function 304 permits or prohibits decryption. Here, special area playback function 3
As 05, a function for reading the encryption key K is provided. The special area reproduction function 305 is common to the reproduction-only data read function 301 in terms of hardware, but is a function of extracting the encryption key K from the ADIP data obtained from the area set as the special area. Then, the encryption key K extracted by the special area reproducing function 305 is supplied to the decryption function 304 and used for the decryption processing.

According to such a processing example, the encryption key K is
It is recorded in a special area which is not open on the disc 100. Alternatively, it is recorded in a predetermined area on the disc 100 by a special recording method (special data structure, etc.) that is not open to the public. Then, on the side of the disk drive device, the specially recorded encryption key K is read to decrypt the encrypted system information Q. Therefore, in addition to the same effects as the examples described in FIGS. 15 and 16, the effect that the encryption key K can be delivered and received by the disk 100 itself can be obtained. This makes it possible to use, for example, a different encryption key for each disc 100 as the encryption key K.

7. Example of Cutting Device Next, the cutting device in the disc manufacturing unit 203 described above will be described. The disc manufacturing process is roughly divided into a so-called master process (mastering process) and a disc forming process (replication process). The master process is a process until a metal master (stamper) used in the disc forming process is completed, and the disc forming process is a process for mass-producing optical discs that are duplicates of the stamper.

Specifically, in the master process, so-called cutting is performed, in which a photoresist is applied to a polished glass substrate and pits and grooves are formed on the photosensitive film by exposure with a laser beam. For example, in the case of the disc 100 as shown in FIG. 2, pit cutting is performed in a portion corresponding to the embossed area on the innermost peripheral side of the disc, and wobbling groove cutting is performed in a portion corresponding to the groove area. In the case of the disc 100 as shown in FIGS. 1 and 3, the wobbling groove is cut over the lead-in area 91 to the lead-out area 93. Here, the disc 100 of FIG.
Will be described as a cutting device.

The information incorporated in the ADIP information, that is, the verification information P in the shipping information and other management information are prepared in a preparatory process called premastering. When the cutting is completed, a predetermined process such as development is performed, and then information is transferred onto the metal surface by, for example, electroforming to form a stamper required for copying the disc. Next, by using this stamper, for example, by an injection method or the like, information is transferred onto a resin substrate, a reflection film is formed on the information, and then processing such as processing into a required disc shape is performed to obtain a final product. Complete.

As shown in FIG. 20, for example, the cutting device includes an optical unit 70 for irradiating a photoresist glass substrate 71 with a laser beam for cutting.
It is composed of a drive unit 80 that rotationally drives the glass substrate 71, and a signal processing unit 60 that converts input data into recording data and controls the optical unit 70 and the drive unit 80.

In the optical section 70, a laser light source 72 composed of, for example, a He—Cd laser, and an acousto-optic type optical modulator 73 for modulating (turning on / off) the light emitted from the laser light source 72 based on recording data. (AOM), an acousto-optic type optical deflector 74 (AOD) that further deflects the light emitted from the laser light source 72 based on a wobble generation signal, and a prism 75 that bends the optical axis of the modulated beam from the optical deflector 74.
And the objective lens 7 that collects the modulated beam reflected by the prism 75 and irradiates it on the photoresist surface of the glass substrate 71.
6 is provided.

The drive unit 80 also includes a motor 81 for rotating the glass substrate 71, an FG 82 for generating an FG pulse for detecting the rotation speed of the motor 81, and the glass substrate 7.
A slide motor 83 for sliding 1 in the radial direction, a motor 81, a servo controller 84 for controlling the rotation speed of the slide motor 83, tracking of the objective lens 76, and the like.

The signal processing unit 60 includes a formatting circuit 61 for forming input data by adding, for example, an error correction code to source data from a computer, and a predetermined arithmetic processing on the input data from the formatting circuit 61. A logical operation circuit 6 for performing recording to form recording data
Have two. For example, the ADIP address data including the verification information P is generated by this processing system. In addition, the signal processing unit 60
Is a portion for generating a wobble generation signal for wobbling the groove, which is a data generator 63,
It has a parallel / serial conversion unit 64 and a sine conversion unit 66. The signal processing unit 60 also includes a drive circuit 68 that drives the optical modulator 73 and the optical deflector 74 based on the signal from the sine conversion unit 66. Further, the signal processing unit 60 is a system for controlling the servo controller 84, the data generating unit 63 and the like based on the clock generator 91 for supplying the master clock MCK to the logical operation circuit 62 and the like and the supplied master clock MCK. It has a controller 67. Master clock M from clock generator 91
CK is frequency-divided by a frequency divider 92 to 1 / N and bit clock b
itCK, and the bit clock bitCK is
Byte clock byteC divided by 1/8 by frequency divider 93
K is supplied to the necessary circuit system.

Then, in this cutting apparatus, the servo controller 84 changes the motor 81 during cutting.
The glass substrate 71 is rotatably driven at a constant linear velocity by the slide motor 83, and the glass substrate 71 is slid by the slide motor 83 while being rotated so that a spiral track is formed at a predetermined track pitch. At the same time, the light emitted from the laser light source 72 is emitted from the light modulator 73 and the light deflector 7.
The modulated beam based on the recording signal is irradiated via the objective lens 76 onto the photoresist surface of the glass substrate 71 via the optical path 4, and as a result, the photoresist is exposed based on the groove.

For the groove cutting, the system controller 67 controls the data generator 63 to sequentially output the data corresponding to the MSK modulation portion and the monotone wobble portion. For example, the data generator 63 continuously outputs “0” data during the period corresponding to the monotone wobble based on the byte clock byteCK. Further, during the period corresponding to the MSK modulation portion, necessary data is generated corresponding to each ADIP unit forming the above address block. That is, the channel bit data corresponding to sync, data “0”, and data “1” is output at a predetermined timing. Of course, as described above, the data “0” and the data “1” have the address value, the additional information, and the verification information P when collected from each ADIP unit.
The respective values are output in the required order so that the data becomes the data that constitutes the.

The data output from the data generator 63 is supplied to the sign converter 66 as a serial data stream corresponding to the bit clock bitCK in the parallel / serial converter 64. The sine conversion unit 66 selects and outputs a sine wave having a predetermined frequency according to the supplied data by so-called table lookup processing. Therefore, in the period equivalent to monotone wobble,
The sine wave of frequency fw1 is continuously output. Also MSK
In the period corresponding to the modulation part, the frequency fw2 or the frequency f
The waveform of w1 is output.

Frequency f output from sine converter 66
The signals of w1 and fw2 are supplied to the drive circuit 68 as wobbling generation signals. The drive circuit 68 continuously controls the optical modulator 73 to be in the ON state to form the groove. Further, the optical deflector 74 is driven according to the wobbling generation signal. This causes the laser light to meander, that is, wobbling the portion exposed as a groove.

By such an operation, the exposure portion corresponding to the wobbling groove is formed on the glass substrate 41 based on the format. After that, development, electroforming, and the like are performed to generate a stamper, and the stamper is used to produce the above-mentioned disc.

8. Disc Drive Device Example Next, a disc drive device capable of performing a recording operation for forming a phase change pit mark on the disc 100 and reproducing the phase change pit mark data and the ADIP information will be described. FIG. 21 shows a disk drive device 3
The structure of 0 is shown. In FIG. 21, the disc 100 is the disc of this example described above.

The disc 100 is loaded on the turntable 7 and used during the recording / reproducing operation.
Is driven to rotate at a constant linear velocity (CLV). Then, the optical pickup 1 reads the pit data recorded on the track on the disc 100 and the ADIP information embedded as the wobbling of the track. Pits recorded as data on the tracks formed as grooves are so-called phase change pits. When the disc 100 shown in FIG. 2 is used, the embossed pits are also read.

In the pickup 1, a laser diode 4 serving as a laser light source, a photodetector 5 for detecting reflected light, an objective lens 2 serving as an output end of laser light,
An optical system (not shown) is formed which irradiates the disk recording surface with laser light through the objective lens 2 and guides the reflected light to the photodetector 5. A monitor detector 22 that receives a part of the output light from the laser diode 4
Is also provided. The laser diode 4 has a wavelength of 405 nm
The so-called blue laser is output. In addition, N by the optical system
A is 0.85.

The objective lens 2 is held by the biaxial mechanism 3 so as to be movable in the tracking direction and the focus direction. The entire pickup 1 can be moved in the disk radial direction by a sled mechanism 8. The laser diode 4 in the pickup 1 is driven to emit laser light by a drive signal (drive current) from the laser driver 18.

Information on the light reflected from the disk 90 is detected by the photodetector 5, converted into an electrical signal corresponding to the amount of received light, and supplied to the matrix circuit 9. The matrix circuit 9 is provided with a current-voltage conversion circuit, a matrix calculation / amplification circuit, etc. corresponding to output currents from a plurality of light receiving elements as the photodetector 5, and generates necessary signals by matrix calculation processing. For example, a high frequency signal (reproduction data signal) corresponding to reproduction data, a focus error signal FE for servo control, a tracking error signal TE
And so on. Further, a push-pull signal P / P is generated as a signal related to wobbling of the groove, that is, a signal for detecting wobbling.

The reproduction data signal output from the matrix circuit 9 is sent to the binarization circuit 11 and the focus error signal F
E, the tracking error signal TE to the servo circuit 14,
The push-pull signals P / P are supplied to the MSK demodulator 24, respectively.

The push-pull signal P / P output as a signal related to the wobbling of the groove is the MSK demodulator 2
4, the wobble PLL 25 and the address decoder 26 are processed by the wobbling processing circuit system to extract an address as ADIP information, and the wobble clock WCK used for decoding the ADIP information is supplied to other required circuit systems. That is, the MSK demodulation is performed by the MSK demodulation section to extract ADIP data, and the ADIP data is decoded by the address decoder 26. As a result, address information, various control information, and verification information P are obtained,
It is supplied to the system controller 10.

The reproduced data signal obtained by the matrix circuit 9 is binarized by the binarizing circuit 11 and then supplied to the encoding / decoding section 12. The encoding / decoding unit 12 has a functional portion as a decoder during reproduction and a functional portion as an encoder during recording. At the time of reproduction, as a decoding process, a run length limited code demodulation process, an error correction process, a deinterleave process, and the like are performed to obtain reproduced data.

Further, the encoding / decoding section 12 generates a reproduction clock synchronized with the reproduction data signal by the PLL processing during reproduction, and executes the decoding processing based on the reproduction clock. At the time of reproduction, the encoding / decoding unit 12 accumulates the data decoded as described above in the buffer memory 20. As the reproduction output from the disk drive device 30, the data (user data) buffered in the buffer memory 20 is read and transferred and output.

The interface section 13 is connected to an external host computer 40, and the host computer 40
Communication of recorded data, reproduced data, various commands, and the like is performed with. Then, at the time of reproduction, the reproduction data decoded and stored in the buffer memory 20 is transferred and output to the host computer 40 via the interface unit 13. The host computer 40
Read commands, write commands, and other signals from the device are supplied to the system controller 10 via the interface unit 13.

By the way, shipping information recorded on the disc 100 as recording / reproducing data, that is, the system information SI (encrypted system information Q) and the disc information D.
I is obtained by the decoding process in the encoding / decoding unit 12 and supplied to the system controller 10.

When recording user data, the recording data is transferred from the host computer 40, and the recording data is sent from the interface section 13 to the buffer memory 20 and buffered. In this case, the encoding / decoding unit 12 performs error correction code addition, interleaving, addition of subcode, etc., encoding as recording data to the disc 100, etc. as encoding processing of the buffered recording data.

An encode clock, which serves as a reference clock for the encoding process during recording, is generated by the encode clock generating section 27, and the encode / decode section 1
2 performs an encoding process using this encode clock. The recording data generated by the encoding process in the encoding / decoding unit 12 is subjected to the waveform adjustment process in the write strategy 21, and then sent to the laser driver 18 as a laser drive pulse (write data WDATA). In the write strategy 21, recording compensation is performed, that is, fine adjustment of the optimum recording power and adjustment of the laser drive pulse waveform with respect to the characteristics of the recording layer, the spot shape of laser light, the recording linear velocity, and the like.

In the laser driver 18, the write data WD
The laser drive pulse supplied as ATA is applied to the laser diode 4 to drive the laser emission. As a result, pits (phase change pits) corresponding to the recording data are formed on the disc 90.

APC circuit (Auto Power Control) 19
Is a circuit unit that controls the laser output power by the output of the monitor detector 22 so that the laser output becomes constant irrespective of temperature. The target value of the laser output is given from the system controller 10, and the laser driver 18 is controlled so that the laser output level becomes the target value.

The servo circuit 14 generates various servo drive signals for focus, tracking and sled from the focus error signal FE and the tracking error signal TE from the matrix circuit 9 and executes the servo operation.
That is, the focus drive signal FD and the tracking drive signal TD are generated according to the focus error signal FE and the tracking error signal TE, and are supplied to the biaxial driver 16. The biaxial driver 16 drives the focus coil and tracking coil of the biaxial mechanism 3 in the pickup 1. As a result, the pickup 1, the matrix circuit 9, the servo processor 14, the biaxial driver 1
6. A tracking servo loop and a focus servo loop are formed by the biaxial mechanism 3.

In response to a track jump command from the system controller 10, the tracking servo loop is turned off and a jump drive signal is output to the biaxial driver 16 to execute the track jump operation.

Further, the servo processor 14 generates a sled drive signal based on a sled error signal obtained as a low frequency component of the tracking error signal TE, access execution control from the system controller 10 and the like, and supplies it to the sled driver 15. . The thread driver 15 responds to the thread drive signal by the thread mechanism 8
To drive. Although not shown, the sled mechanism 8 has a mechanism including a main shaft that holds the pickup 1, a sled motor, a transmission gear, and the like.
5 drives the sled motor 8 in response to the sled drive signal, so that the required slide movement of the pickup 1 is performed.

The spindle servo circuit 23 controls the spindle motor 6 to rotate CLV. The spindle servo circuit 23 obtains the current rotation speed information of the spindle motor 6 from the wobble clock WCK generated by the wobble PLL, and compares this with the predetermined CLV reference speed information to generate the spindle error signal SPE. . Also, during data reproduction, the encoding / decoding unit 21
Since the reproduction clock (clock that serves as the reference for the decoding process) generated by the PLL in the above becomes the current rotation speed information of the spindle motor 6, by comparing this with the predetermined CLV reference speed information, the spindle error signal SP
E can also be generated. Then, the spindle servo circuit 23 supplies the spindle drive signal generated according to the spindle error signal SPE to the spindle motor driver 17. Spindle motor driver 17
Applies, for example, a three-phase drive signal to the spindle motor 6 according to the spindle drive signal, and causes the spindle motor 6 to perform CLV rotation. In addition, the spindle servo circuit 2
3 generates a spindle drive signal in response to a spindle kick / brake control signal from the system controller 10, and causes the spindle motor driver 17 to execute operations such as starting, stopping, accelerating and decelerating the spindle motor 6.

Various operations of the servo system and the recording / reproducing system as described above are controlled by the system controller 10 formed by a microcomputer. The system controller 10 executes various processes according to commands from the host computer 40. For example, when a read command requesting the transfer of certain data recorded on the disc 100 is supplied from the host computer 40, first, seek operation control is performed for the designated address. That is, a command is issued to the servo circuit 14 to execute the access operation of the pickup 1 targeting the address designated by the seek command. Thereafter, the operation control necessary for transferring the data in the designated data section to the host computer 40 is performed. That is, data read / decode / buffering from the disk 100 is performed to transfer the requested data.

Further, when a write command (write command) is issued from the host computer 40, the system controller 10 first picks up the pickup 1 at the address to be written.
To move. Then, the encoding / decoding unit 12 causes the data transferred from the host computer 40 to perform the encoding process as described above.
Then, the write data WDATA from the write strategy 21 is supplied to the laser driver 18 as described above, whereby the recording is executed.

In such a disc drive device 30, for example, when the disc 100 is loaded, the shipping information of the disc 100 as described with reference to FIG. 16 or 19 is used under the control of the system controller 10. By executing the processing, the above-mentioned effects can be obtained.

In the example of FIG. 21, the disk drive device 30 connected to the host computer 40 is used, but the disk drive device of the present invention may be in a form not connected to the host computer 40 or the like. In that case, an operation unit and a display unit are provided, and the configuration of the interface part for data input / output is different from that of FIG. That is, recording and reproduction may be performed according to a user's operation, and a terminal unit for inputting / outputting various data may be formed. Of course, various other structural examples are conceivable, for example, a recording-only device and a reproduction-only device.

9. Recording of shipping-time information by BCA as reproduction-only information Up to this point, an example in which reproduction-only data is ADIP information by wobbling grooves, that is, the disc 100 in FIG.
A specific example has been mainly described in line with the above example. In the present invention, it is naturally conceivable to record the verification information P on the disc 100 of the type shown in FIG. 2 by the embossed pit data which is the reproduction-only data. Further, as shown in the disc 100 of FIG. 3, BC which is a kind of additional recording information
For example, the verification information P can be recorded by using the A data as the reproduction-only data. Here, BCA (Burst Cu
An example of recording a part of the shipping information, for example, the verification information P, in the fitting area will be described.

With the spread of write-once or rewritable discs, the BCA is essentially used for copying data that is prohibited to be copied (for example, content data such as music data and video data protected by copyright). For example, DVD (Digital Vers
atile disk), and is provided for recording disk ID information for preventing illegal copying between disks.

BCA irradiates a pulsed laser beam of a YAG (yttrium aluminum garnet) laser at the time of factory shipment to remove the reflective film made of aluminum or the like formed inside the disc in a slender shape in the radial direction. As shown in FIG. 3, the stripe (bar code) is formed so that one round is continuous along the innermost circumference according to the record information such as the identification information such as the ID number and the encryption key. It is formed.

FIG. 22 shows a disk I recorded on the BCA.
An example of the D recording format is shown. As shown in the figure, one round is equally divided into n (n = 3 in this example) pieces to form n blocks. Each block is further divided into m (m = 8 in the example of FIG. 22) frames. Then, each frame has k (in this example,
k = 133), and ID information is recorded by k channel bits. The top 21 channel bits of each frame are used as a frame sync. And
The subsequent 112 channel bits are used as data. Although a detailed description is omitted here, assuming that the disc ID information is modulated by the 4-1 modulation method, the number of data bits that can be recorded in one frame is 32 bits (112 channel bits), and one block can be recorded. The information bits are 256 bits (32 bytes).

In this example, each block is shown in FIG.
ECC format disc ID information as shown in
The information (IDm) is recorded. In this example, 16
16-byte parity is added to the data
Galois field GF (2 ⁸) Reed Solomon
Encoding is performed by the signal RS (32, 16, 17).
Three blocks have the same ECC format
It is said that And this means that the same disc ID information
This means writing three times on one circumference of the disk. This triple
The writing constructs a product code with a distance of 3 in the vertical direction.
It is equivalent to being done.

In such a BCA, the disc ID
Part of the information (IDm) or the disc ID information (I
Dm) is expanded and used, and the verification information P in the shipping information is used.
Can be recorded. In addition, this disc ID
Since sufficient error correction coding is performed as described above in consideration of the reliability of information, the EC for the verification information P itself is
It can be said that it is not necessary to configure C.

Although the recording method and the processing method of the disc and the shipping information according to the embodiments have been described above, the present invention is not limited to these examples, and various modifications are possible within the scope of the gist. It is possible.

[0144]

As will be understood from the above description, according to the present invention, the following effects can be obtained. According to the present invention, part of the shipping information is recorded as read-only information on the optical disc, and other contents are recorded as recording / playback information. This has the effect of recording high-reliability, a certain amount of data, and shipping-time information that meets the conditions of fraud prevention by tampering. That is, by using the recording / playback information, there is no problem even if the data amount becomes large, and by using the read-only information that cannot be tampered with, the shipping information for the recording / playback is checked, thereby making it illegal for tampering. Can prevent use.

When the reproduction-only information is information recorded in the data format as the pre-address information, the shipping information may be incorporated and recorded in the data format as the pre-address information. Especially when the pre-address information is recorded by wobbling grooves on the disc, shipping-time information as read-only information can be recorded as ADIP information by the wobbling grooves. In addition, regarding the above shipping information incorporated in the data format as pre-address information,
Since the error correction code is used, the reliability of the shipping information can be improved. In addition, shipping-time information recorded as reproduction-only information and shipping-time information recorded as recording / reproduction information may be written in multiplex.
The reliability of shipping information can be improved.

The shipping-time information recorded as the reproduction-only information and the shipping-time information recorded as the recording / playback information are recorded at physical positions where they can be simultaneously read. Thus, the disc drive device side can quickly read the shipping information.
For example, even when the shipping information is read out as a part of the processing at the time of starting the drive device, the operation does not take a long time. Particularly, as described above, the shipping-time information as the reproduction-only information is recorded as the ADIP information, and the shipping-time information as the recording / playback information is recorded as the data on the track by the wobbling groove, so that the simultaneous reading becomes possible. .

Also recorded as the above reproduction-only information,
It is assumed that a part of the shipping information is verification information about the shipping information recorded as the recording / reproducing information. Whether the verification information is read-only information and cannot be tampered with, and thus the verification information is used to tamper with the shipping information recorded as the recording / playback information, for example, system information. Can be accurately verified. Further, if it is determined by the verification that the disc has been tampered with, it is possible to prevent unauthorized use due to tampering by prohibiting the disc drive device from permitting recording or reproduction of the disc.

Further, since all or part (for example, system information) of the shipping information recorded as the recording / reproducing information is encrypted and recorded, the security against falsification can be enhanced. Also, if encryption is performed, the disk drive device side needs to decipher, but if the result of verification using the verification information indicates that there is tampering, the deciphering is not permitted. , The operation corresponding to the disc (for example, the processing using the system information and the subsequent recording or reproducing operation) can be prohibited, and the unauthorized use can be prevented. When encryption is performed, the encryption key information is recorded on the disc as read-only information, so that the encryption key can be passed through the disc itself. This makes it possible to use various encryption keys.

The reproduction-only information is information recorded by the additional recording system in the above-mentioned BCA or the like, and even if a part of the shipping information is recorded as the information recorded by the additional recording system. The effect of the present invention as shipping information can be obtained. In that case, shipping information may be recorded in the ID information peculiar to the disc, which is recorded by the write-once recording method.

Further, the shipping-time information as the reproduction-only information is incorporated into the ADIP format or the BCA ID information as described above, so that the shipment-time information as the reproduction-only information is set in the disc drive device. No special processing circuit system for reading information is required, and the circuit is not complicated and the cost is not increased.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a disc and shipping information according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a disk and shipping information of the embodiment.

FIG. 3 is an explanatory diagram of a disc and shipping information according to the embodiment.

FIG. 4 is an explanatory diagram of a wobbling groove structure of the disc according to the embodiment.

FIG. 5 is an explanatory diagram of an example of a recording method of shipping information according to the embodiment.

FIG. 6 is an explanatory diagram of a wobble MSK stream of the disc according to the embodiment.

FIG. 7 is an explanatory diagram of a bit configuration based on wobbles according to the embodiment.

FIG. 8 is an explanatory diagram of address blocks for the RUB according to the embodiment.

FIG. 9 is an explanatory diagram of a sync part of the disc according to the embodiment.

FIG. 10 is an explanatory diagram of a sync bit pattern of the disc according to the embodiment.

FIG. 11 is an explanatory diagram of a data part of the disc according to the embodiment.

FIG. 12 is an explanatory diagram of an ADIP bit pattern of the disc according to the embodiment.

FIG. 13 is an explanatory diagram of a groove address format of the disc according to the embodiment.

FIG. 14 is an explanatory diagram of a recording / reproducing data structure of the disc according to the embodiment.

FIG. 15 is an explanatory diagram of the disc manufacturing method according to the embodiment.

FIG. 16 is an explanatory diagram of a disc recording / reproducing method according to an embodiment.

FIG. 17 is a flowchart of a disc manufacturing procedure and a shipping information processing procedure according to the embodiment.

FIG. 18 is an explanatory diagram of another example of the disc manufacturing method according to the embodiment.

FIG. 19 is an explanatory diagram of another example of the disc recording / reproducing method of the embodiment.

FIG. 20 is a block diagram of a cutting device for manufacturing the disc according to the embodiment.

FIG. 21 is a block diagram of a disk drive device according to the embodiment.

FIG. 22 is a disc I of BCA of the disc of the embodiment.
It is explanatory drawing of a D recording format.

FIG. 23 is a BCA disc I of the embodiment.
It is explanatory drawing of the ECC format of D information.

[Explanation of reference numerals] 1 pickup, 2 objective lens, 3 biaxial mechanism, 4
Laser diode, 5 photo detector, 6 spindle motor, 8 thread mechanism, 9 matrix circuit, 10 system controller, 12 encode /
Decoding unit, 13 interface unit, 14 servo circuit, 20 buffer memory, 21 write strategy, 23 spindle servo circuit, 24 FSK demodulating unit, 25 wobble PLL, 26 address decoder,
27 encode clock generator, 30 disk drive device, 61 formatting circuit, 62 logical operation circuit, 63 address generation circuit, 64 P / S conversion circuit, 66 sine conversion circuit, 68 drive circuit, 72 laser light source, 73 AOM, 74 AOD, 100 discs

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 7/24 561 G11B 7/24 561Q 7/26 7/26 20/10 20/10 H // G11B 19 / 04 501 501/04 501H F term (reference) 5D029 JB09 JB11 PA01 PA04 WA02 WD22 5D044 BC04 CC04 DE45 DE52 FG30 5D090 AA01 BB11 CC04 CC09 DD02 EE13 EE20 GG40 5D121 AA02 JJ05

Claims (28)

[Claims] 1. An optical disc in which non-rewritable read-only information is recorded and also recordable and playable record / playback information is recorded, wherein part of the shipping information is the read-only information. And other contents are recorded as the recording / reproducing information. 2. The reproduction-only information is information recorded in a data format as pre-address information,
The shipping information recorded as the reproduction-only information is
The optical disc according to claim 1, wherein the optical disc is incorporated in a data format as the pre-address information and recorded. 3. The optical disc according to claim 2, wherein the pre-address information is recorded by wobbling grooves on the disc. 4. The pre-address information is error-correction coded, and the shipping information incorporated in the data format as the pre-address information is further error-correction coded. Item 2. The optical disc according to item 2. 5. The shipping-time information recorded as the reproduction-only information and the shipping-time information recorded as the recording / playback information are recorded at physical positions where they can be simultaneously read. The optical disc according to claim 1, characterized in that: 6. The part of the shipping time information recorded as the reproduction-only information is verification information for the shipping time information recorded as the recording / playback information. The optical disc according to item 1. 7. The shipping-time information recorded as the reproduction-only information and the shipping-time information recorded as the recording / playback information are respectively overwritten. optical disk. 8. The optical disc according to claim 1, wherein the shipping information recorded as the recording / reproducing information is encrypted and recorded. 9. The encryption key information used for the encryption is
The optical disc according to claim 8, wherein the optical disc is recorded as the reproduction-only information. 10. The reproduction-only information is information recorded by an additional recording method, and a part of the shipping information is recorded as the information recorded by the additional recording method. The optical disc according to claim 1, wherein 11. The information recorded by the write-once recording method is ID information unique to the disc, and the shipping information is recorded by being incorporated in the ID information. The described optical disc. 12. Play-only information including a part of the shipping-time information is recorded on a disc, and other contents of the shipping-time information are recorded on a disc having the read-only information recorded thereon. An optical disk manufacturing method, wherein an optical disk in which the shipping information is recorded as read-only information and record / playback information is written by writing as recordable / playback recordable / playback information. 13. The reproduction-only information is information recorded in a data format as the pre-address information, and the shipping information recorded as the reproduction-only information is in the data format as the pre-address information. 2. The data is incorporated and recorded.
2. The optical disc manufacturing method described in 2. 14. The optical disc manufacturing method according to claim 13, wherein the pre-address information is recorded on the disc by wobbling grooves. 15. The pre-address information is error-correction-coded, and the shipping-time information incorporated in the data format as the pre-address information is further error-correction-coded. Item 14. The optical disk manufacturing method according to Item 13. 16. The groove information in which the shipping-time information recorded as the reproduction-only information is recorded on a disc by wobbling grooves, and the shipment-time information as the reproduction-only information is recorded by the wobbling. By recording the shipping-time information as the recording / playback information, the shipping-time information as the reproduction-only information and the shipping-time information as the recording / playback information can be read simultaneously. The optical disc manufacturing method according to claim 12, wherein the optical disc is recorded at a physical position defined by: 17. The information is recorded as the reproduction-only information,
13. The optical disc manufacturing method according to claim 12, wherein the part of the shipping information is verification information about the shipping information recorded as the recording / reproducing information. 18. The optical disc according to claim 12, wherein the shipping-time information recorded as the reproduction-only information and the shipping-time information recorded as the recording / playback information are respectively overwritten. Production method. 19. The optical disk manufacturing method according to claim 12, wherein the shipping information recorded as the recording / reproducing information is encrypted and recorded. 20. The optical disc manufacturing method according to claim 19, wherein the encryption key information used for the encryption is recorded as the reproduction-only information. 21. The optical disk manufacturing method according to claim 12, wherein the reproduction-only information including a part of the shipping information is recorded by a write-once recording method. 22. The information recorded by the write-once recording method is disc-specific ID information, and the shipping information is recorded by being incorporated in the ID information. The optical disk manufacturing method described. 23. An optical disc in which non-rewritable read-only information is recorded and also recordable and playable record / playback information is recorded, wherein part of the shipping information is the read-only information. For the optical disc in which other contents are recorded as the recording / playback information, the shipping time information recorded as the reproduction-only information and the shipping time information recorded as the recording / playback information are recorded. Each of them is read out, and the shipping information recorded as the recording / playback information is
A disc drive method comprising: verifying using the shipping information recorded as the reproduction-only information, and prohibiting or permitting an operation corresponding to the optical disc according to the verification result. 24. The shipping information recorded as the recording / reproducing information is encrypted and recorded, and the decryption of the encrypted shipping information is prohibited or permitted according to the verification result. 24. The disc drive method according to claim 23, wherein the operation corresponding to the optical disc is prohibited or permitted by doing so. 25. An optical disc on which reproduction-only information for reproduction is recorded and recording / reproduction information capable of recording and reproduction is recorded, and part of the contents of the shipping information is the reproduction-only information. In a disc drive device for an optical disc in which other contents are recorded as the recording / reproducing information, head means for irradiating the optical disc with a laser to obtain a reflected light signal, and reproducing the reflected light signal from the head means. First decoding means for decoding the shipping information recorded as dedicated information, and second decoding means for decoding the shipping information recorded as the recording / playback information from the reflected light signal, The shipping information obtained by the second decoding means is
A verification means for verifying using the shipping information obtained by the first decoding means, and a control means for prohibiting or permitting an operation corresponding to the optical disk according to a verification result of the verification means are provided. A disk drive device characterized in that 26. The shipping information recorded as the recording / reproducing information is encrypted and recorded, and the control means decrypts the encrypted shipping information according to the verification result. 26. The disk drive device according to claim 25, wherein the operation corresponding to the optical disk is prohibited or permitted by prohibiting or permitting the processing. 27. The disk drive according to claim 25, wherein the first decoding means decodes the read-only information recorded as a wobbling groove on the optical disk from the reflected light signal. apparatus. 28. The disk according to claim 25, wherein the first decoding means decodes the read-only information recorded on the optical disk by the write-once recording method from the reflected light signal. Drive device.