Data carrier, method and device for recording and reproduction method

FIELD: data carriers.

SUBSTANCE: device has input zone, data recording zone, which is formed at outer peripheral side of input zone and into which multiple parts of content are recorded, and output zone, formed at outer peripheral side of zone for recording data. First and second information concerning control of copyright protection, by means of which copyright for multiple content portions is controlled, is recorded on data carrier is varying positions, secrecy of which is different from each other.

EFFECT: higher efficiency.

4 cl, 21 dwg

 

The scope of the invention

The present invention relates to a recording medium for recording content data to the recording method and device for recording content data and the way to play back content data, in particular, those that allow well-known playback device to reproduce the content data and the copyright of the content data that must be protected.

Prior art

Currently developed optical disk of a new type, with which the famous CD-DA (CD digital audio) and CD-ROM (permanent memory on the CD-ROM) can reproduce the data and which is compatible with your computer. In an optical disc of a new type of content data encrypted and recorded to protect their copyright. It is believed that the key information for encrypted content data is recorded in the introduction area.

In other words, when the data content is encrypted and recorded, there is a problem concerning the status of key information. In order to manage the key information in a secure way, it is preferable to store in the position to which the user may not have free access. Thus, when recording video, such as DVD (universal the digital disc), the key information is recorded in the zone read is input, and the encrypted data is recorded in the program area. Thus, in such an optical disc of a new type to prevent free access of the user to information about the key is that key information written in the introduction area.

In the case of DVD, it was designed under the condition that the data content is encrypted in order to protect the copyright on it. Thus, when the key information recorded in the introductory area, don't pose any significant problems. However, in the case of such an optical disc of a new type, if the key information was recorded in the introductory area, famous players and CD-ROM, which does not allow you to work with the optical drive of a new type, will not be able to play back the content.

In other words, the well-known CD-DA and CD-ROM were developed with regard to recording the encrypted content data. Thus, a well-known player and the drive does not have the function of decoding the encrypted content data. When the encrypted data that is read from the optical disk, a new type are interpreted using a known player and drive, it is considered that the interpretation process for the content data is performed using software tools.

However, although known prospect who agrivating and the drive to reproduce content data from the optical disk, by induction zone cannot be accessed programmatically. In other words, in the standard CD-ROM, disk access is performed on a sector-by-sector", each of which consists of 98 frames. Although known players and the drive to reproduce content data, they can get access to the drive sector by sector. Thus, a well-known player and the drive can't be accessed by the introduction area. Therefore, when the key information recorded in the introductory areas, famous players and drive, which are not designed to work with such an optical disk of a new type may not obtain access to information about the key and cannot decrypt the data content.

Players and drive that can work with the optical drive of a new type will be unlocked after deciding that the key information recorded in the introductory area. The player and the drive will be developed so that they had access to the introductory area, received information about the key and desirerable encrypted content data using the received key information. Thus, when the player and the drive that allow you to work with an optical drive, a new type will be available, the problem will be solved well-known player and drive, who may not have access to information the purpose of the key in the introductory area and to reproduce the content data.

In transition, while the player and the drive that allow you to work with the optical drive of a new type, will not be publicly available, well-known players and CD-ROM, which can not work with the optical drive of a new type, will read the encrypted content data from the optical disk and a new type to decrypt the encrypted data content. However, in this transitional phase, as the key information in the introductory area will not have access, is the problem on which the encrypted content data cannot decode.

In order to solve the problem, it is assumed that the key information recorded in the program area, in order to known the drive and player, which can not work with the optical drive of a new type, could decrypt the data content.

However, the secrecy of the key information recorded in the program area, lower than that recorded in the introductory area. Thus, when the key information recorded in the program area, although known drive and player, which can not work with the optical drive of a new type, allow us to interpret the data content key information recorded in the program area is extracted by illegal means. As a result, it is believed that because the data content will be Takano be reproduced or copied, you cannot protect their copyright.

Therefore, the present invention is to perform the recording medium, method and recording device and method of play that will allow the playback device, which may not work with encrypted data content, to decrypt the encrypted content data and protect their copyright.

The invention

According to the present invention, the recording media data on which many parts of the content data recorded in the program area, with two types of information management of copyright, which represent the first and second information, the management of copyright for copyright management of many parts of the content data recorded in different positions, the secrecy of which differs from each other.

Also according to the present invention a method of recording data includes the steps of recording a variety of parts of the content data in the program area of the recording medium and data recording two types of information management of copyright, which represent the first and second information, the management of copyright in various positions, the secrecy of which differs from each other.

In addition, according to the present invention a device for recording the data which contains the writer of many parts of the content data in the program area of the recording medium and data recorder are two types of information management of copyright, the first and second information, the management of copyright in various positions, the secrecy of which differs from each other.

The present invention also provides a recording media data on which many parts of the content data encrypted and recorded in the program area, with at least two types of information about the key, which represent the first and second key information, write in different positions, the secrecy of which differs from each other.

The present invention also provides a method of recording data containing the encryption of many parts of the content data and recording the encrypted set of data content in the program area of the recording medium and data recording at least two types of information about the key, which represent the first and second key information in various positions, the secrecy of which differs from each other.

The present invention provides a device for recording data containing the cipher tool of many parts of the content data and recording the encrypted set of data content in the program area of the recording media data and means for recording at least two types of information about the key, which represent the first and second is th key information in various positions, the secrecy which differs from each other.

Brief description of drawings

Figure 1 depicts a top view for describing the example of the optical disk according to the present invention;

figure 2 - schematic diagram for describing the example of the optical disk according to the present invention;

figure 3 - schematic diagram for describing the key cells;

4 is a schematic diagram for describing the example of the optical disk;

figure 5 depicts the block diagram for a description of the encryption process for the optical disk;

6 depicts a flowchart for describing the process of decoding the optical disk;

7 is a schematic diagram for describing the key cells of the optical disk;

Fig is a schematic diagram for describing the key cells of the optical disk;

Fig.9 is a schematic diagram for describing the key cells of the optical disk;

figure 10 is a schematic diagram for describing the key cells of the optical disk;

figa and FIGU is a block diagram for a description of the encryption process for the optical disk according to the present invention;

Fig depicts a block diagram for a description of the interpretation process for the optical disk according to the present invention;

Fig depicts a block diagram for a description of the interpretation process for the optical disk according to the ACLs of the present invention;

Fig depicts a block diagram for describing the key cells of the optical disk according to the present invention;

Fig depicts a block diagram for describing the key cells of the optical disk according to the present invention;

figa and FIGU is a block diagram of an example of a recording device, an optical disc according to the present invention;

Fig depicts a block diagram showing an example of the device for reproducing data from the optical disk according to the present invention;

Fig depicts a block diagram showing another example of the device for reproducing data from the optical disk according to the present invention;

Fig algorithm for describing another example of the device for reproducing data from the optical disk according to the present invention.

Preferred embodiments of the present invention

Next, with reference to the accompanying drawings, will be described variant of implementation of the present invention. Figure 1 and figure 2 show the structure of an optical disk according to the present invention. The diameter of the optical disc 1 according to the present invention is 120 mm In the center of the optical disk 1 formed hole 2. The physical shape of the optical disk 1 is the same as that of the known CD (CD-ROM). There is another optical disk 1, having the first diameter 80 mm, called CD single (CD single).

In addition, there are three types of optical discs 1, which are divided into the optical disc playback only, write-once optical disc and a rewritable optical disk.

In the optical disk 1 only for playback layer for recording is made of aluminum. In the optical disk 1 only for reproducing information recorded in the form of physical grooves. This disc is usually made with the help of the matrix.

In a write once optical disk 1 layer for recording is made of the organic dye, such as phtalocyanine or a cyanine dye. In a write once optical disc, when recording data, the temperature of the layer for recording, made of organic dye on the disk increases under the action of laser light beam. As a result, the layer for recording, made of a dye thermally deformed.

In a rewritable optical disc 1 layer for recording is made from a material with a phase transition. As a material with a phase transition is used, for example, an alloy of Ag-In-Sb-Te (silver-indium-antimony-tellurium). Such a material with a phase transition has a crystalline phase and an amorphous phase. When the level of the output laser light beam is high, the intensity of the laser is about the light beam is high, the temperature of the layer for recording, made of a material with a phase transition, raised above the melting point, after which it is rapidly cooled. As a result, the layer for recording transitions in amorphous state. When the level of the output laser light beam is low, that is, the intensity of the laser light beam is relatively low, the temperature of the layer for recording, made of a material with a phase transition, increase, after which it is gradually cooled. As a result, the layer for recording passes into the crystalline state.

As shown in figure 2, the first introductory area LI1 is formed on the innermost periphery of the optical disk. On the outer periphery of the input area LI1 formed the first program area PA1. On the outer periphery of the first area PA1 formed the first end area L1. In the first program area PA1 audio content data recorded in the same recording format as the standard CD-DA (CD digital audio).

Beyond the first end zone L1 formed the second introductory area LI2. On the outer periphery of the input area LI2 formed the second software area RA2. Outside the second software area RA2 shaped second end zone. The second software area L2 audio data that has been compressed, for example, in accordance with the ATRAC3 compression system,encrypt and write data content.

Data content key with which designerour encrypted content data to the second software area RA2, contained in the first datathe key cells and recorded in the second introductory area LI2.

To known drive, which may not work with the optical disk 1, was able to decrypt the encrypted data content, it is necessary that the data of the content key with which designerour encrypted content data to the second software area RA2, contained in datathe second key cells and were recorded in the program area RA2.

In addition, the application data of the software player SFT1, which is a program of the interpretation process for decoding the encrypted content data recorded in the program area RA2, recorded in the program area RA2.

Dataandcell keys represent data, content key which has been encoded and encrypted. Dataandcell keys also contain information management of copyright DRM (digital rights management account).

These key cells represent data that have moustachette data encoded content key and encrypted. So many parts of the data content key that has been encoded and encrypted, can be treated as a real cell, which retains many of the key content. Thus, they are referred to as cell data key.

In addition, the DRM information management of copyright, which perform management of copyright, such as restrictions on the reproduction and restrictions on copying certain parts of the data content that can be contained in the cell data of the key. Using management of copyright, you can specify the DRM information, such as "playback only" and "permitted playback and copying". In addition, you can specify restrictions on copying, the number of copies when the restrictions on copying, such as "one copy", "five copies", etc. in Addition, it is believed that specified "permitted distribution network or distributed copy data.

Figure 3 is an example of the structure of the cell key. As shown in figure 3, at the beginning of the cell key is part of the data, which represents the version number. Then there is the part of the data, which represents the number of pieces of data of the content key. Then, data are KS1, KS2,... the content key corresponding to the number of pieces of data of the content key. Every data KS1, KS2,... it is UCA content consist for example, 48 bytes. Then formed part of the data, which represents the number of pieces of information management of copyright. Then the generated information DRM1, DRM2,... management of copyright, corresponding to the number of parts, which constitute a part of the data. Information DRM1, DRM2,... management of copyright consists of 16 bytes for each part. Then added a CRC (cyclic redundancy), with which an error is detected from 16 bytes. The data structure of key cells, shown in figure 3 is only an example. Thus, these key cells may have a different structure.

Data formatthe key cells recorded in the introductory area LI2, differs from the data formatthe key cells recorded in the program area RA2. In other words, datathe key cells in the introductory area LI2 with high secrecy have a higher value than datathe key cells in the programming area with a low secrecy.

Thus, as shown in figure 2, in the optical disc 1 according to the present invention, the first datathe key cells are written in the introductory area LI2, and the second datathe key cells of zapisyvayutsya software area RA2.

When the player and the drive that can work with the optical disk 1 and which will be released in the near future, reproduce the content data from the optical disc 1, they refer to the introductory area LI2 and read the data from the first datathe key cells. The first datathe key cells contain data KS1, KS,... the content key with which designerour separate part of the encrypted content data recorded in the program area RA2 optical disk 1. Choosing data KS1, KS2,... key content from thesecell key, you can decrypt the encrypted content data in the program area RA2.

When performing a software process to access the software area RA2, famous players and CD-ROM, which can not work with the optical disk 1 can read data from the second datathe key cells. In other words, the player and the drive can choose the data KS1, KS2,... the content key of the second cell data key and to perform a process of decoding encrypted content data recorded in the program area RA2 data KS1, KS2,... key content.

The following is a description of the encryption process and the process of interpretation for l is the R content of the optical disc 1 according to the present invention. Before the description of the encryption process and the interpretation process for the optical disc 1 according to the present invention, will be described the basic processes of encryption and decoding.

In the optical disk 1A, which will describe the basic processes of encryption and decoding, as shown in figure 4, on the inner periphery of the optical disk 1A is formed first introductory area LI10. On the outer periphery of the input area LI10 formed the first software area RA. Outside the first zone RA formed the first end area L10. In the first policy area RA audio content data were recorded in the same recording format as the standard CD-DA. Beyond the first end zone L10 formed the second introductory area LI20. On the outer periphery of the outlet zone LI20 formed the second software area RA. Outside the second software area formed by the second end area L20. The second software area RA recorded content data that has been compressed in accordance, for example, with the standard ATRAC3, and encrypted. Data content key with which designerour encrypted content data recorded in the second program area RA are contained in the cellkey recorded in the second introductory area LI20.

Figure 5 depicts the process of encrypting content data and C is recording their second software area RA known optical disk 1A.

Figure 5 data C1, C2,... content serves respectively to the terminals 11A, 11B,... input data content. Data C1, C2,... content are, for example, audio data, music programs, compressed in accordance with, for example, ATRAC3. Data C1, C2,... content is served from the terminals 11A, 11B,... input data content, respectively, in the circuits 12A, 12B,... encryption.

Data KS1, KS2,... the content key with which the encrypted data C1, C2,... content is produced by circuit 13 generate the content key. Data KS1, KS2,... key content served from the circuit 13 generate key content, served respectively in circuits 12A, 12B,... encryption.

Data C1, C2, ... content, which is fed from the terminals 11A, 11B, ... input content data, encrypt data KS1, KS2, ... key content, respectively, using circuits 12A, 12B, ... encryption. Data Se, C2E, ... content that has been encrypted using circuits 12A, 12B, ... encryption, write in the software area RA2 optical disk.

Data KS1, KC2, ... key content submitted from the circuit 13 generate key content, served in scheme 14 production cell key.

Separate data C1, C2, ... content submitted to the terminals 11A, 11B, ... input data content, contain information DRM1, DRM2, ... management of copyright. And the information DRM1, DRM2, ... management of copyright is information that represents a constraint on reproduction and restrictions on copying in relation to the management of copyright for individual parts of the data content. Information DRM1, DRM2, ... management of copyright is produced by circuit 15 developing DRM. Using information DRM1, DRM2, ... management of copyright, you can specify to allow or prohibit the reproduction, permission or prohibition on copying, permit the production of a single copy or permit the production of multiple copies, etc. Information DRM1, DRM2, ... management of copyright, drafted with the assistance of scheme 15 developing DRM, served in scheme 14 production cell key.

Scheme 14 generate the key cells encodes data KS1, KC2, ... the content key output circuit 13 generate the content key, and information DRM1, DRM2, ... management of copyright, the output circuit 15 to generate DRM, and produces data of key cells. The output circuit 14 generate the key cells are served in scheme 18 encryption.

Data KL key key cells are served from the circuit 16 hash calculations in scheme 18 encryption. Data KL key key cells are produced using data KD key device hash calculations and data KN of the hidden code key. These key cells produced with the aid of the rd circuit 14 generate the key cells, encrypt using data KL key key cells supplied from the circuit 16 hash calculation.

In other words, data KD key device serves in scheme 16, the hash calculation. In addition, the data KN of the hidden code key is fed from the circuit 17 develop the hidden code key in scheme 16, the hash calculation. Data KD of the key device is stored in some place in the player and recorder. Data KN of the hidden code key are produced in the form of a random number with schema 17 develop the hidden code key. Data KN of the hidden code key is recorded, for example, in the introductory area LI20 optical disk 1A.

Scheme 16 hash calculation produces data KL key cell of the key data KD of the key device and data KN of the hidden code key. Data KL key key cells are served in scheme 18 encryption. Scheme 18 encryption encrypts the data KL key key cells supplied from the circuit 14 generate cells of the key data KL key key cells supplied from the circuit 16 hash calculations. Data that is recorded in the datacell key, encrypted using the encryption schemes 18, written in the introductory area LI20 optical disk 1A.

Thus, in the encryption process known optical disk 1A separate data C1, C2, ... content is encrypted respectively with what omashu data KS1, KS2, ... key content and recorded in the program area LI20. Data KS1, KS2, ... the content key with which to encrypt individual data C1, C2, ... content is stored along with information DRM1, DRM2, ... management of copyright in datacell key and is encrypted and stored in the introductory area LI20 optical disk 1A.

Figure 6 depicts the process of decoding encrypted data Se, C2E, ... content recorded on the optical disk 1A, and receiving, respectively, data C1, C2, ... content.

The encrypted data Se, C2e, ... content is read from the program area RA. The encrypted data Se, C2e, ... content served respectively in circuit 23A, 23C, ... interpretation.

The encrypted datacell key and data KN of the hidden code key reproduced from the introductory zone LI20 optical disk 1A. Datathe key cells are served in scheme 26 interpretation. On the other hand, the data KN of the hidden code key served in scheme 22, the hash calculation.

Then write the data KD of the key device, which is stored in some place in the device or playback device. Data KD key device serves in scheme 22, the hash calculation. Scheme 22 the hash calculation produces data KL key key cells using the data KN of the hidden code key data KD of the key device. Data KL key key cells are served in scheme 26 interpretation.

Scheme 26 interpretation deshifriral encrypted data written in the cellthe key data KL key key cells supplied from the circuit 22, the hash calculation. Data that is read from the decrypted datathe key cells, served in scheme 21 play key cells. Scheme 21 playback cells key selects data KS1, KS2, ... key content and information DRM1, DRM2, ... management of copyright of data that is read from the cellkey.

Data KS1, KS2, ... key content selected by the circuit 21 play key cells, served respectively in circuit 23A, 23C, ... interpretation. Information DRM1, DRM2, ... management of copyright, selected using the schema 21 play key cells, served in scheme 24 the definition of DRM.

Scheme 24 definition DRM defines restrictions on the reproduction and restrictions on copying for private data C1, C2, ... content using information DRM1, DRM2, ... about the management of their copyright. Information about restrictions on the reproduction and restrictions on copying for private data C1, C2, ... content is served in scheme 25 control playback and copying.

CX is we 23A, 23C, ... interpretation designerour encrypted data Se, C2E, ... content is reproduced from the program area RA optical disk 1A, and receive data respectively C1, C2, ... content. Decrypted data C1, C2, ... content is served in scheme 25 control playback and copying.

Scheme 25 control playback and copying functions as the restrictions on the reproduction and restrictions on copying for private data C1, C2, ... content, relevant information about the restrictions on the reproduction and restrictions on copying, supplied from the circuit 24 definition of DRM.

Thus, in the interpretation process for the optical disk 1A, data K_LOCK0 cell key is read from the introductory zone LI20 optical disk 1A. Scheme 21 playback cells key selects data KS1, KS2, ... key content and information DRM1, DRM2, ... management of copyright of data K_LOCK0 cell key. The encrypted data Se, C2E, ... content that has been read from the program area RA optical disc, served respectively in circuit 23A, 23C, ... interpretation. Data C1, C2, ... content designerour using data KS1, KS2, ... the content key extracted from the datathe key cells in the introductory area LI20. Scheme 21 play key cells extracts in which ormatio DRM1, DRM2, ... management of copyright. Using information DRM1, DRM2, ... management of copyright control playback and copying data C1, C2, ... content.

In this way individually encrypts individual data C1, C2, ... content of the optical disk 1A. Separate data C1, C2, ... content contain information DRM1, DRM2, ... management of copyright. The playing conditions and conditions for copying can be individually specified for individual data C1, C2, ... content. Thus, using the same content data recorded in the program area RA, when the number of pieces of data KS1, KS2, ... the content key stored in the datacell key, or change restrictions on the reproduction and restrictions on copying information DRM1, DRM2, ... management of copyright, which are stored in the datacell key, you can modify the reproduced content data, the playing conditions and conditions for copying.

In other words, in the examples shown in Fig.7 and Fig, the same data C1, C2, C3, C4 and C5 of the contents recorded in the program area RA2 optical disc. In the example shown in Fig.7, all data were recorded COP1, COP2, COP3, SC4 and SC5 key content and information DRM1 DRM2, DRM3, DRM4 and DRM5 management of copyright for data C1, C2, C3, C4 and C5 content. In this case, when the information DRM1, DRM2, DRM3, DRM4 and DRM5 copyright management represents permission to reproduce, you can decrypt all data C1, C2, C3, C4 and 5 content.

In the example shown in Fig, although data C1, C2, C3, C4 and C5 of the content recorded on the optical disk 1A as in the example shown in Fig.7, only data COP1, COP2 and COP3 key content and information DRM1, DRM2 and DRM3 management of copyright for data C1, C2, and C3 content were recorded in datathe key cells. In this case, although the data C1, C2, C3, C4 and C5 of the content recorded on the optical disk 1A, reproduce only data C1, C2 and C3 content.

Thus, even if the same data content recorded on the optical disk 1A, when the number of pieces of data of the content key stored in the datathe key cells is limited, the number of parts reproduced content data may be limited.

In the examples shown in figure 9 and figure 10, the same data C1, C2, C3, C4 and 5 content were recorded in the program area RA optical disk 1A. In the example shown in Fig.9, the data COP1, COP2, COP3, SC4 and SC5 key content and information DRM1, DRM2, DRM3, DRM4 and DRM5 management and the engineering right, which constitute the permission to copy, were recorded in the datathe key cells. In this case, as all information DRM1, DRM2, DRM3, DRM4 and DRM5 copyright management represents the permission to copy, all data C1, C2, C3, C4 and C5 content can be copied.

In the example shown in figure 10, although the data C1, C2, C3, C4 and C5 of the content recorded on the optical disk 1A as in the example shown in Fig.9, the data COP1, COP2, COP3, SC4 and SC5 key content and information DRM1, DRM2, DRM3, DRM4 and DRM5 management of copyright, which constitute a prohibition on copying, were recorded in the datathe key cells. In this case, as all information DRM1, DRM2, DRM3, DRM4 and DRM5 management of copyright is a prohibition on copying, data C1, C2, C3, C4 and C5 content may not be copied.

Thus, even if the same data C1, C2, C3, C4 and C5 of the content recorded on the optical disk 1A, when the information DRM1, DRM2, DRM3, DRM4 and DRM5 management of copyright stored in datacell key changed, and the number of parts reproduced content data, and conditions for copying, and the playing conditions.

According to a variant implementation of the present invention, when used for the processes of this structure, even if the data are reproduced from the same disk, the number of parts reproduced content data, and conditions for copying, and the playing conditions can be changed depending on whether you are using a drive that can work with the optical disk 1 or disk drive, which may not work with the optical disk 1.

What follows is a description of the encryption process and the interpretation process for the optical disc 1 according to the present invention.

On figa and figv shows the encryption process for the optical disc 1 according to the present invention. On figa and figv data C1, C2, ... content serves respectively to the terminals 31 AND B, 31 C, ... input data content. Data C1, C2, ... content represent content data that has been compressed in accordance, for example, with the standard ATRAC3. Data C1, C2, ... content, which is fed from the terminals 31A, B, C, ... input data content, served respectively in circuit 32A, 32V, ... serirovani.

Data KS1, KS2, ... the content key with which to encrypt individual data C1, C2, ... content is produced by using the schema 33 generate the content key. Data KS1, KS2, ... key content served respectively in circuit 32A, 32V, ... encryption.

Circuit 32A, 32V, ... encryption encrypt data C1, C2, ... content that p is given from the terminal 31A, V, ... input data content using data KS1, KS, ... the content key supplied respectively from the circuit 33 generate the content key. Data Se, C2E, ... encrypted content using circuits 32A, 32V, ... encryption, write in the software area RA2 optical disk 1.

Data KS1, KC2, ... key content submitted from the circuit 33 generate key content, served in the selectors 38A and 38B. Selectors 38A and 38B select data, content key data from KS1, KC2, ... the content key generated by using the schema 33 generate the content key. Key data of the content selected by the selectors 38A and 38B, served respectively in circuits 34A and 34B generation cell key.

Separate data C1, C2, ... content submitted to the terminals 31 AND V, ... input data content, contain information DRM1, DRM2, ... management of copyright. Information DRM1, DRM2, ... copyright management represents information about the restrictions on the reproduction and restrictions on copying in relation to the management of copyright for the content data. Using information DRM1, DRM2, ... management of copyright, you can specify the permission or prohibition of reproduction, permission or prohibition on copying, permit one copy or permit numerous mines of the Finance etc.

Scheme 35A generation produces DRM information DRM1 A, DRM2A, DRM3A, ... management of copyright, which will be recorded in the introductory area LI2. Information DRM1 AND DRM2A, DRM3A, ... management of copyright produced by the circuit 35 And the generation DRM is supplied to the selector 39A.

Scheme 35V generation produces DRM information DRM1B, DRM2B, ... management of copyright, which will be recorded in the program area RA2. Information DRM1B, DRM2B, ... management of copyright, developed with schema 35V generation DRM is supplied to the selector 39B.

Selectors 39A and 39B choose the necessary information to the copyright management information DRM1 AND DRM2A, ... management of copyright, developed with schema 35A generation DRM and DRM1B, DRM2B, ... management of copyright, developed with schema 35V generation DRM. Information management of copyright, selected using selectors 39A and 39B, served in circuits 34A and 34B generation cell key.

Circuit 34A generate key cells encodes data KS1, KS2, ... the content key supplied from the circuit 33 develop a content key and information DRM1A, DRM2A, ... management of copyright, supplied from circuit 35A generation DRM, and produces data that will be written in terms of key cells. The output circuit 34A generate key cells are served in scheme 41 And encryption.

Data KL key key cells are served from the circuit 36A hash calculation circuit 41 And encryption. Data KL1 key key cells produced using data KD key device hash calculations and data KN1 hidden code key. Using data KL1 key cell key to encrypt data that is fed from a circuit 34A generate key cells and which will be recorded in part of the cell key.

In other words, data KD key devices served in the scheme 36A hash calculations. In addition, the data KN1 hidden code key filed of circuits 37A develop the hidden code key, served in the scheme 36A hash calculations. Data KD key device stored in any place in the player and recorder. Data KN1 hidden code key are produced in the form of a random number by using the schema 37A develop the hidden code key. Data KN1 hidden code key is recorded, for example, in the introductory area LI2 optical disk 1.

Using data KD of the key device and data KN1 hidden code key generated using the circuit 37A develop the hidden code key scheme 36A hash calculation produces data KL1 key key cells. Data KL1 key key cells are served in scheme 41 And encryption. Scheme 41 And encryption encrypts the information about the cell key filed of circuits 34A generate key cells, using data KL1 key key cells that are served from the circuit 36A hash calculation.

Data the key cells that were generated using the circuit 34A generation cell key and encrypted using circuit 41 And encryption, are recorded in the introductory area LI2 optical disk 1.

Circuit 34B generate key cells encodes data KS1, KS2, ... the content key received from the circuit 33 develop a content key and information DRM1B, DRM2B, ... management of copyright, coming from schema 35V generation DRM, and produces data of key cells. Cell data key generated using the circuit 34B generate key cells, serves in the circuit 41C encryption.

Data KL2 key key cells originating from circuit 36V hash calculations, shall be submitted to the circuit 41C encryption. Circuit 41C encryption encrypts the data key cells originating from circuit 34B generate key cells with data KL2 key key cells originating from circuit 36V hash calculations. Data KL2 key key cells are produced using data KD key device hash calculations and data KN hidden code key.

In other words, data KD key devices served in the scheme 36V hash calculations. In addition, the data KN hidden code key filed of schemes 37V develop the hidden code key, served in the scheme 36V hash calculations. Data KN hidden code key are produced in the form of a random number by using the schema 37V develop the hidden code key. Data is H2 hidden code key is recorded, for example, in the software area RA2 optical disk 1.

Scheme 36V hash calculation produces data KL2 key cell of the key data KD of the key device and data KN hidden code key generated using the schema 37V develop the hidden code key. Data KL2 key key cells are fed into the circuit 41C encryption. Circuit 41C encryption encrypts the data key cells originating from circuit 34B generate key cells, using data KL2 key key cells originating from circuit 36V hash calculation.

Datathe key cells that were generated using the circuit 34B generation cell key and encrypted using the circuit 41C encryption is recorded in the program area RA2 optical disk 1.

Scheme 40 generation program generates the application data for the software player SFT1, with which designerour data content. Application data of the software player SFT1 is recorded in the program area RA2 optical disk.

As described above, in the encryption process of the optical disk 1 according to the present invention, a separate data C1, C2, ... encrypt content, respectively, using data KS1, KS2, ... key content and recorded in the program area RA2 optical disk 1. Data KS1, KS2, ... the content key with which to encrypt private data is S1, C2, ... content is stored along with information DRM1A, DRM2A, ... management of copyright in datathe key cells and stored in the introductory area LI2 optical disk 1. In addition, the data KS1, KS2, ... the content key with which to encrypt individual data C1, C2, ... content is stored along with information DRM1B, DRM2B, ... management of copyright in datathe key cells and recorded in the program area RA2 optical disk 1.

Fig and Fig show the process of interpretation for the data contents of an optical disc 1 according to the present invention. In the optical disk according to the present invention, the process of decoding is performed in the case where the drive and the player who can work with the optical disk 1, and reproduce the content differs from the interpretation process performed in the case where the drive and player, which can not work with the optical disk 1, and reproduce the content. Fig depicts the process of interpretation performed when the disk or the player who can work with the optical disk 1, reproduces the data content. Fig depicts the process of interpretation performed when the disk or the player who can't is to work with the optical disk 1, reproduces data content.

On Fig encrypted data Se, C2E, ... content is reproduced from the program area RA2 optical disk 1. The encrypted data Se, C2E, ... content served respectively in circuit 43A, B, and 43C, ... interpretation.

Datacell key and data KN1 hidden code key is read from the introductory area LI2 optical disk 1. Datathe key cells are served in scheme 47 interpretation.

Data KN1 hidden code key is read from the introductory area LI2 optical disk 1. Data KN1 hidden code key served in scheme 42 the hash calculation. Data KD key device receives from the apparatus or device that reproduces the optical disk 1. Data KD key device serves in scheme 42 the hash calculation. Scheme 42 the hash calculation produces data KL1 key key cells with data KN1 hidden code key data KD of the key device. Data KL1 key key cells are served in scheme 48 reproduce the cell key.

Scheme 47 interpretation deshifriral datathe key cells with data KL1 key key cells originating from circuit 42 hash calculations. Output signal circuit 47 interpretation is served in scheme 48 reproduce the cell key.

Scheme 48 playback is of key cells selects data KS1, KS2, ... key content and information DRM1A, DRM2A, ... management of copyright of datacell key.

Data KS1, KS2, ... key content selected by means of the circuit 48 is playing key cells, served respectively in circuit 43A, B, ... interpretation. Information DRM1A, DRM2A, ... management of copyright, selected using the scheme 48 playback key cells, served in scheme 44 definition of DRM.

Scheme 44 definition DRM defines restrictions on the reproduction and restrictions on copying data C1, C2, ... content using according to their information DRM1A, DRM2A, ... management of copyright. Information about restrictions on the reproduction and restrictions on copying data C1, C2, ... content is served in scheme 45 control playback and copying.

Circuit 43A, B, ... interpretation designerour encrypted data Se, C2E, Se, ... content is reproduced from the program area RA2 optical disk 1 by using the data KS1, KS2, ... the content key sent from the circuit 48 playback key cells, and respectively receives data C1, C2, ... content. Decrypted data C1, C2, ... content is served in scheme 45 control playback and copying. Scheme 45 control playback and copying performs the function the restrictions on the reproduction and restrictions on copying for private data C1, C2, ... content using information about the restrictions on the reproduction and restrictions on copying, which is supplied from the circuit 44 definition of DRM.

As described above, in the process of interpretation the drive and player, who can work with the optical disc 1, datathe key cells are read from the introductory area LI2 optical disk 1. Scheme 48 playback cells key selects data KS1, KS2, ... key content and information DRM1A, DRM2A, ... management of copyright of datathe key cells. The encrypted data Se, C2E, ... content is reproduced from the program area RA2 optical disk 1, served respectively in circuit 43A, B, ... interpretation. The encrypted data Se, C2E, ... content designerour using data KS1, KS2, ... the content key data taken fromcell key input area LI2. The result data C1, C2, ... content. Scheme 48 playback key cells receives information DRM1A, DRM2A, ... management of copyright and controls the playback and copying data C1, C2, ... content, respectively, using the information DRM1A, DRM2A, ... management of copyright.

Fig depicts the process interpretation well-known player and drive, which are not destined what acini to work with the optical disk 1.

On Fig application software player SFT1 is read from the program area RA2 optical disk 1. Application data of the software player SFT1 come in scheme 60 the execution of the program, implemented by means of software. Using the application data of the software player SFT1, the interpretation process can be performed programmatically. The application of the software player SFT1 may not be the main body of the application that performs the process of interpretation, and can be part of it.

Datacell key and data KN hidden code key is read from the program area RA2. Key datathe key cells are served in the scheme of interpretation 57.

Data KN hidden code key served in scheme 52 the hash calculation. Data KD of the key device is taken from the device. Data KD of the key device, proceed in scheme 52 the hash calculation. Scheme 52 the hash calculation produces data KL2 key key cells with data KN hidden code key data KD of the key device. Data KL2 key key cells are served in scheme 57 interpretation.

Scheme 57 interpretation deshifriral data datathe key cells with data KL2 key key cells originating from circuit 52 hash calculations. Data cell key, decrypted with schema 57 interpretation, served in scheme 51 playback key cells.

Scheme 51 playback cells key selects data KS1, KS2, ... key content and information DRM1B, DRM2B, ... management of copyright of datathe key cells. Data KS1, KS2, ... key content selected by means of the circuit 51 is playing key cells, served respectively in circuit 53A, B, C, ... interpretation. Information DRM1B, DRM2B, ... management of copyright, obtained from the circuit 51 playback key cells, served in scheme 54 definition of DRM.

Scheme 54 definition DRM defines restrictions on the reproduction and restrictions on copying data C1, C2, ... content, respectively, using the information DRM1B, DRM2B, ... management of copyright. Information about restrictions on the reproduction and restrictions on copying data C1, C2, ... content is fed into the circuit 55 to control copying and playback.

Circuit 53A, B, C, ... interpretation designerour encrypted data Se, C2E, Se, ... content, which is reproduced from the program area RA2 optical disk 1, and respectively receive decrypted data C1, C2, ... content. Decrypted data C1, C2, ... content served in scheme 55 management however is the. and up. Scheme 55 control playback and copying functions as the restrictions on the reproduction and restrictions on copying data C1, C2, ... content using information about the restrictions on the reproduction and restrictions on copying, which is supplied from the circuit 54 definition of DRM.

In the process of interpretation the drive and player, which can not work with the optical disc 1, datathe key cells are read from the program area RA2 optical disk 1. Scheme 51 playback cells key selects data KS1, KS2, ... key content and information DRM 1B, DRM2B, ... management of copyright of datathe key cells. The encrypted data Se, C2E, ... content, which is reproduced from the program area RA2 optical disk 1, served respectively in circuit 43A, B, ... interpretation. The encrypted data Se, C2E, ... content designerour using data KS1, KS2, ... the content key, the selected respectively from the data K_LOCK2 cell key programmatic area RA2. The result is decrypted data C1, C2, ... content. Information DRM1B, DRM2B, ... management of copyright get with schema 51 playback key cells. Using information DRM1B, DRM2B, ... management of copyright control playback and copy what Finance separate data C1, C2, ... content.

As shown in figa and FIGU, in the encryption process for the optical disc 1 according to the present invention, include selectors 38A and 38B. Selectors 38A and 38B select data KS1, KS2, ... the content key of the data KS1, KS2, ... key content, served in circuits 34A and 34B generate key cells and contain the selected data content key dataandthe key cells. Scheme 35A generation DRM, which generates information DRM1A, DRM2A, ... management of copyright, which is contained in the datathe key cells recorded in the introductory area LI2, and the scheme 35V generation DRM, which generates information DRM1B, DRM2B, ... management of copyright, which is contained in the datathe key cells recorded in the program area RA2, are separate. Selectors 39A and 39B choose the necessary information copyright management information DRM1A, DRM2A ... and DRM1B, DRM2B, ... management of copyright, which is supplied respectively to the circuits 34A and 34B generation cell key.

Thus, it is possible to separately specify the data KS1, KS2, ... key content and information DRM1A, DRM2A, ... management of copyright, which is contained in the datathe key cells, the backgrounds in the introductory area LI2, and data KS1, KS2, ... key content and information DRM1B, DRM2B, ... management of copyright, which is contained in the datathe key cells recorded in the program area RA2.

In such a structure, when the content datathe key cells recorded in the introductory area LI2, and the data contentthe key cells recorded in the program area RA2, listed separately, data content, which is reproduced in the player and drive that can work with the optical disk 1, and data contents that are played with drive and player, which can not work with the optical disk 1, can be distinguished by the number of pieces of reproducible content data, names, conditions of play and options.

In other words, it is assumed that the datathe key cells recorded in the introductory area LI2, can only be read through the player and drive that can work with the optical disk 1. Thus, when secrecy is high, the likelihood of reproducing and copying the data content is low. On the contrary, datathe key cells recorded in the program area RA2, read using a known player is the body and drive. Thus, when secrecy is low, the probability of illegal reproduction and copying of the content data is high.

Thus, it is believed that using datathe key cells that are recorded in the introductory area LI2 with high secrecy, you can increase the amount of content being played, the quality of the reproduced content is higher, or restrictions on management in relation to the management of copyright are more profitable as more added value with additional information than datathe key cells recorded in the program area RA2 low secrecy. As a result, by using additional information, you can increase the number of additional values.

For example, as shown in Fig, it is assumed that the data C1, C2, C3, C4, C5, ... content were recorded in the program area RA2 optical disk 1. Datathe key cells in the introductory area LI2 with high secrecy write data COP1, COP2, COP3, SC4 and SC5 key content data C1, C2, C3, C4, C5, ... content. In addition, record information DRM1A, DRM2A, DRM3A, DRM4A, DRM5A, ... management of copyright.

On the contrary, datathe key cells in the program C is not RA2 low write data privacy key KS1, COP2, COP3, ... content and information DRM1B, DRM2B, DRM3B, ... management of copyright of data C1, C2, C3, ... content.

In this case, when data isthe key cells in the introductory area LI2 is possible to decrypt and reproduce all data C1, C2, C3, C4, C5, ... content. In contrast, using data K_LOCK2 cell key in the software area RA2 after missing data SC4 and SC5 content key with which designerour data C4 and C5 content can be played back only three data groups C1, C2, C3, ... content.

Thus, although the player and drive a new type that can work with the optical disk 1, allow to reproduce data C1, C2, C3, C4, C5, ... content, drive and player, which can not work with the optical disk 1, can reproduce only data C1, C2, C3, ... content.

In this example, if data is availablethe key cells in the introductory area LI with high secrecy, the number of pieces of reproducible content data, and thus added value, greater than if the datathe key cells in the program area RA2 low secrecy.

For example, as shown in Fig, datathe key cells in the introductory area LI2 with high reception is testu data were recorded KS1, COP2, COP3, SC4 and SC5 key content and information DRM1, DRM2, DRM3, DRM4, DRM5, ... management of copyright of data C1, C2, C3, C4, 5, ... content. All information DRM1A, DRM2A, DRM3A, DRM4A, DRM5A, ... copyright management represents the permission to copy.

On the contrary, datathe key cells in the program area RA2 low secrecy recorded data COP1, COP2, COP3, SC4 and SC5 key content and information DRM1B, DRM2B, DRM3B, DRM4B, DRM5B, ... management of copyright of data C1, C2, C3, C4, C5, ... content. All information DRM1B, DRM2B, DRM3B, DRM4B, DRM5B, ... management of copyright is a prohibition on copying.

In this case, when data isthe key cells in the introductory area LI2, you can copy all recorded data C1, C2, C3, C4, C5, ... content. However, when using datathe key cells in the program area RA2 is impossible to copy all data C1, C2, C3, C4, C5, ... content.

Thus, although the player and drive a new type that can work with the optical disk 1, can copy data C1, C2, C3, C4, C5, ... content, known drive and player, which can not work with the optical disk 1 can reproduce data C1, C2, C3, C4, C5, ... content, but they can't copy them.

In this example the e, if data are available, the key cells in the induction zone with high secrecy, restrictions on management in relation to the management of copyright are better, and the added values are higher than in the presence of cell data key in the software area with low secrecy.

Thus, when data isandthe key cells recorded respectively in the introductory area LI2 and software area RA2, if availablethe key cells in the introductory area LI2 with high secrecy portions of the reproduced content data becomes larger, the management of copyright is becoming more profitable, and added value becomes greater than when there is datathe key cells in the program area RA2.

It is assumed that the dataandcells of keys stored in the introductory area LI2 with high secrecy and software area RA2 low secrecy, have the following structure.

In thesethe key cells recorded in the introduction area and/or outlet area, which represents the recording position with high secrecy, the number of pieces of information management of copyright is smaller than in the data the key cells in the programme area, which is the recording position with a low secrecy. As a result, if there is information management of copyright, written in the introduction area and/or outlet area, the number of reproduced music programs more than when information is available, management of copyright, recorded in the program area.

In thesethe key cells recorded in the introduction area and/or outlet area, which is the recording position with high secrecy, restrictions on the management of information management of copyright is weaker than in the datathe key cells recorded in the program area, which is the recording position with a low secrecy. For example, when the management information is copyright of key cells recorded in the introduction area and/or in the outlet zone, represents the permission to copy, information management software copyright zones may constitute restrictions on copying. Moreover, when the information management of copyright data key cells recorded in the introduction area and/or outlet area, is a permit multiple copying, the information management of copyright software zone may be a permissions the bottom up.

Information management of copyright datathe key cells recorded in the introduction area and/or in the outlet zone, which is the recording position with high secrecy can be a data content of higher quality and are present in more added value with additional information than the information management of copyright datathe key cells in the programme area, which is a position with a low secrecy. For example, when the information management of copyright datathe key cells in the introduction area and/or outlet area represents the permission to reproduce all music programs, information management of copyright datathe key cells in the program area may constitute permission to reproduce only special parts or enumeration music programs. Thus, the quality of the content varies. On the other hand, the information management of copyright datathe key cells recorded in the introduction area and/or in the outlet zone can contain music programs, promotional photography and moving images. On the contrary, information management and the development of the right data the key cells in the programme area can only contain music program without advertising images and moving images. Thus, the information management of copyright datathe key cells differs from the information management of copyright datacell key.

The number of pieces of data of the content key of the datathe key cells recorded in the introduction area and/or in the outlet zone, which is the recording position with high privacy, less than the datacell key programmatic areas, which is the recording position with a low secrecy. Thus, the number of music programs, reproduced by using the key data contents of the cell key, which is recorded in the datathe key cells recorded in the introduction area and/or outlet area is greater than the data content key datathe key cells recorded in the program area.

Using the data content key datathe key cells recorded in the introduction area and/or in the outlet zone, which is the recording position with high secrecy, you can play the content with higher quality and can receive is to be more added value with additional information compared to the data of the content key data the key cells in the programme area, which is the recording position with a low secrecy. For example, using the data content key datathe key cells recorded in the introduction area and/or in the outlet zone, which is the recording position with high secrecy, you can play all music programs. On the contrary, using the data content key datathe key cells recorded in the program area, you can only play a special part and transfer music programs. Thus, the quality of the data content that will be played varies. On the other hand, the data of the content key datathe key cells recorded in the introduction area and/or outlet area, are the key data for music programs, promotional photos and moving images. On the contrary, data, content key datathe key cells recorded in the program area may contain the key data only for music programs without advertising images and moving images. In this way they differ.

Thus, the player and the drive of a new type, which can operate with an optical disk according to the present invention, and known di is kovod and players, who can not work with optical disk according to the present invention may vary according to the amount of content being played, the quality and added values. In addition, it is possible to protect the copyright of content data.

Below is a description of the real structure of the recording device. On figa and 16B data content, which will be recorded in the program area PA1, served on the terminal 100 input. Content data are audio data, which are the same as the data corresponding to the standard CD-DA. Data content received from the terminal 100 input fed to the circuit 104 encoding with error correction.

The data content that will be recorded in the program area RA2, served on the terminal 101 is input. Content data are audio data compressed according to the compression system, for example, ATRAC3. The data content shall be submitted to the circuit 102 encryption.

Scheme 102 encryption encrypts every piece of content data. Data KS1, KS2, ... key content is served from the circuit 103 generate the content key in the schema 102 encryption. Scheme 103 generate the content key produces data KS1, KS2, ... key content from a single content. Data content received from the terminal 101 is input, encrypt using data KS1, KS2,... key content served from the circuit 103 generate the content key. The signal output circuit 102 encryption is fed into the circuit 104 encoding with error correction.

Data KS1, KS2, ... the content key obtained by the circuit 103 generate key content, is fed to the circuit 105A production of key cells. In addition, the data KS1, KS2, ... key content are served in the scheme V production of key cells. Information DRM1A, DRM2A ... and DRM1B, DRM2B, ... management of copyright is supplied from circuits A and B generation DRM respectively in circuit 105A and V generation cell key.

Scheme A generation produces DRM information DRM1A, DRM2A, ... management of copyright, which will be contained in datathe key cells recorded in the introductory area LI2. Scheme V generation produces DRM information DRM1B, DRM2B, ... management of copyright, which will be contained in datathe key cells recorded in the program area RA2.

Circuit 105A generate key cells produces datathe key cells recorded in the introductory area LI2. Datathe key cells recorded in the introductory area LI2, served in a circuit 108A encryption. Data KL1 key key cells are served from circuit 110A hash calculations in circuit 108A encryption. Data KL1 key cell to which UCA produced with schema A hash calculations. Scheme A hash calculation calculates using randomization data KN1 secret key, which is fed from the circuit A develop the hidden key data KD of the key device. Circuit 108A encryption encrypts datathe key cells. Datacell key, encrypted using the circuit 108A encryption, served in scheme 112 making subcode TOC (table of contents). Data KN1 hidden code key, which comes from the schema A generate secret key, are served in scheme 112 making subcode TOC.

Scheme V generate key cells produces datathe key cells recorded in the program area RA2. Data datathe key cells recorded in the program area LI2, served in the encryption scheme 108B. Data KL2 key key cells are served from the circuit 110V hash calculations in circuit 108B encryption. Data KL2 key key cells are produced by using the schema V hash calculations. Scheme V hash calculation calculates by randomization data KN secret key, which is fed from the circuit 109B develop the hidden key data KD of the key device. Circuit 108B encryption encrypts datathe key cells. Datacell key, encrypted using the circuit 108B, Shi is the formation, served in the schema 104 encoding with error correction.

Data KN secret key, which are received from the circuit 109B generate secret key, is fed to the circuit 104 encoding with error correction. Application data of the software player SFT1 that come from the circuit 118 SW player, served in the schema 104 encoding with error correction.

Scheme 104 encoding with error correction performs the encoding process with errors for content data with CIRC (interspersed reed-Solomon code). Signal output circuit 104 encoding with error correction is supplied to the circuit 113 adding subcode CBT. Scheme 113 adding subcode TOC data performs addition of CBT and data subcode with the output signal of the circuit 104 encoding using a code with bug fixes.

Output signal circuit 113 adding subcode CBT is fed into the circuit 117 modulation. Circuit 117 performs modulation, for example, EFM-modulation (conversion of primary 8-bit code in a 14-bit).

The optical disk 1 is placed on a rotating platform (not shown) and rotates with the spindle motor 120. The spindle motor 120 is controlled by circuit 123 controls the spindle under control circuit 125 controls the actuator so that the spindle motor 120 rotates with constant Lin who Inoi velocity (CLV) or constant angular velocity (CAV).

Circuit 125 controls the servo generates various signals for servo control, such as a servo signal, the focus servo signal, the tracking signal servo screw mechanism and the signal spindle servo in accordance with the error signal, the focus signal error tracking and team work issued from the system controller 130, and outputs the generated servo signals in the circuit 126 of the drive control circuit 127 controls the screw mechanism and circuit 123 controls the spindle.

The optical head unit 121 is a mechanism that focuses the laser light beam of a semiconductor laser used as a light source on the signal surface of the optical disk 1, and scans the tracks formed concentrically or spirally on the optical disk 1. The lens, which focuses the laser light beam of the optical head 121 on the signal surface of the optical disk 1 can be moved in the focusing direction and the tracking direction with a drive head (not shown). Drive head control using circuit 126 for controlling the drive head under control circuit 125 controls the servo. The entire unit of the optical head 121 is moved in the radial direction of the optical disk 1 through the pain is a new mechanism 122. Moving the screw mechanism 122 is controlled by using the schema 127 management resibois mechanism under control circuit 125 of servo control.

The output circuit 117 modulation serves to block the optical head 121. The optical head unit 121 outputs the laser light beam, whose wavelength light modulated in accordance with the output circuit 117 modulation. The laser light beam illuminates the surface of the optical recording disc 1. As a result, information is recorded on the optical disk 1.

In the recorder, when recording the content data in the program area PA1, the data content received from the terminal 100 input fed to the circuit 104 encoding using a code with error correction. Scheme 104 encoding with error correction performs encoding with error correction for the data content.

The optical head unit 121 moves in the program area PA1. Signal output circuit 104 encoding with error correction is supplied to the circuit 117 modulation. Data content received from the terminal 100 entry is recorded in the program area PA1.

When content data is recorded in the program area RA2, content data, which are received from the terminal 101 of the input encrypted using schema 102 encryption and served in the schema 104 encoding IP is the managing errors. Scheme 104 encoding using code performs error correction encoding with error correction for the data content.

Circuit 105A generate key cells produces datathe key cells recorded in the introductory area LI2. Scheme V generate key cells produces datathe key cells recorded in the program area RA2.

The unit of the optical head 111 is moved in the introductory area LI2. Datathe key cells that come from the circuit 105 And the generation of key cells and stored in the introductory area LI2, served in scheme 112 making subcode CBT. Datathe key cells are written in the introductory area LI2 optical disk 1.

The unit of the optical head 111 is moved in the introductory area LI2. Datathe key cells that come from the schema V production of key cells and stored in the introductory area LI2, served in the schema 104 encoding with error correction. Signal output circuit 104 encoding with error correction is supplied to the circuit 107 modulation. Datathe key cells recorded in the program area RA2. Application data of the software player SFT1, which is fed from the circuit 118 developing software player, is sent to the J. 104 encoding with error correction. Application data of the software player SFT1 is recorded in the program area RA2.

On Fig shows the actual structure of the playback device, which can operate with the optical disk 1 when the playback device plays back data from the optical disk 1 according to the present invention.

On Fig optical disk 1 is placed on a rotary platform (not shown) and is driven into rotation with the spindle motor 150. Spindle motor 150 is driven through the circuit 152 controls the spindle under control circuit 151 of servo control so that the spindle motor 150 is rotated at a constant linear velocity (CLV) or constant angular velocity (CAV).

Circuit 151 controls the servo generates various signals for actuators, such as servo signal, the focus servo signal, the tracking signal servo screw mechanism and the signal spindle servo in accordance with the error signal, the focus signal error tracking and team work issued from the system controller 160, and outputs these signals to the circuit 153 control of the drive head, the circuit 154 controls the screw mechanism and circuit 152 controls the spindle. The unit of the optical head 155 is a mechanism that focuser the em laser light beam of the semiconductor laser, used as a light source on the signal surface of the optical disk 1 by the lens and scans the tracks formed concentrically or spirally on the optical disk 1. The entire unit of the optical head 155 is moved in the radial direction of the optical disk 1 using the screw mechanism 156.

When playing software area PA1 block the optical head 155 is moved in the program area PA1 of the optical disk 1 using the screw mechanism 156. The optical head unit 155 reads the data from the program area PA1 of the optical disk 1. Data content in the same format as the data corresponding, for example, the standard CD-DA read from the program area PA1. The output signal of the optical head 155 is supplied to the circuit 162 decoding code with error correction via the RF amplifier 157, circuit 161 EFM demodulation and circuit 158 extract subcode CBT. The circuit 162 decoding code with error correction performs the error correction for the output signal of the optical head 155. The output signal of the circuit 162 decoding code error correction is supplied from the output terminal 168.

When playing software RA2 zone, block the optical head 155 is moved in the introductory area LI2 using the screw mechanism 156. Datamesh and key are read from the introductory area LI2. Datathe key cells are served from the circuit 158 extract subcode CBT in scheme 166 interpretation. Data KN1 secret key is read from the introductory area LI2. Data KN1 secret key is fed from the circuit 158 extract subcode CBT in the scheme of 167 developing key key cells. Scheme 167 developing key key cells produces data KL1 key cell of the key data KD of the key device, stored in the playback device, and data KN secret key. Data KL1 key key cells are served in the scheme 166 interpretation.

The circuit 166 interpretation deshifriral datathe key cells with data KL1 key key cells that come from the schema 167 hash calculations. The output signal of the circuit 166 interpretation is supplied to the circuit 164 playback key cells. The circuit 164 playback cells key selects data KS1, KS2, ... key content of the reproduced datathe key cells. Data KS1, KS2, ... key content are served in the scheme 165 interpretation.

The unit of the optical head 155 is moved in the software area RA2 using the screw mechanism 156. The data content is read from the program area RA2. Data content in the software area RA2 are compressed and encrypted in accordance, for example, with the standard ATRA3. The output signal of the optical head 155 is fed into the circuit 165 interpretation, RF amplifier 157, circuit 161 demodulation scheme, 158 extract subcode CBT and schema 162 decoding with error correction.

Data KS1, KS2 ... key content is served from the circuit 164 playback key cells in the circuit 165 interpretation. Scheme 165 interpretation deshifriral data content using data KS1, KS2, ... the content key received from the circuit 164 playback key cells. Decrypted content data received from the output terminal 169.

The circuit 164 playback key cells selects information DRM1A, DRM2A, ... management of copyright of datathe key cells. Information DRM1A, DRM2A, ... management of copyright is supplied to the system controller 160. System controller 160 determines information DRM1A, DRM2A, ... management of copyright. System controller 160 performs restrictions on the reproduction and restrictions on copying in accordance with the information DRM1A, DRM2A, ... management of copyright.

On Fig shows the actual structure of the playback device, which is not suitable for use with the optical disk 1 when the playback device plays back data from the optical disk 1 according to the present invention.

On Fig optical the cue disc 1 is placed on a rotary platform (not shown) and rotates with the spindle motor 170. The spindle motor 170 is driven by circuit 172 controls the spindle under control circuit 171 of servo control so that the spindle motor 170 is rotated at a constant linear velocity (CLV) or constant angular velocity (CAV).

Circuit 171 of servo control generates various servo signals such as a signal of the focus servo, drive signal tracking signal to drive the screw mechanism and the drive signal of the spindle in accordance with the error signal, the focus signal error tracking and team work issued from the system controller 180, and outputs these signals to the circuit 173 drive control head circuit 174 control screw mechanism and circuit 172 controls the spindle. The optical head unit 175 is a mechanism that focuses the laser light beam of a semiconductor laser used as a light source on the signal surface of the optical disk 1 by the lens and scans the tracks formed concentrically or spirally on the optical disk 1. The entire unit of the optical head 175 is moved in the radial direction of the optical disk 1 using the screw mechanism 176.

The output signal of the optical head unit 175 is fed into the circuit 181 demodulation via the RF amplifier ham 181 demodulation performs EFM-demodulates the output signal of the optical head unit 175. The output circuit 181 demodulation served in the scheme 182 decoding code with error correction. The circuit 182 decoding code with error correction performs a process of error correction CIRC.

When playing software area PA1, the optical head unit 175 is moved in the program area PA1 of the optical disk 1 using the screw mechanism 176. The optical head unit 175 reads data from the program area PA1 of the optical disk 1. Data contents, which have the same format as the data corresponding to the standard CD-DA read from the program area PA1. The output signal of the optical head unit 175 is demodulated by using the schema 181 demodulation. The signal demodulation is supplied to the circuit 184 extraction subcode CBT and schema 182 demodulation error correction. The circuit 182 decoding with error correction performs the process of correcting errors. The output circuit 182 decoding with error correction is output via the interface 183 (I/F).

When playing back content data from the program area RA2, the interpretation process is performed using software tools 191 personal computer 190.

In other words, when playing software RA2 zone, the optical head unit 175 is moved in the software area RA2. Read data software is a lot of player SFT1. The data of the software player SFT1 served in a personal computer 190 via a scheme 181 demodulation scheme, 184 extraction subcode CBT, schema 182 decoding code with bug fixes and interface 183.

As shown in Fig, when you run the application software of the player (step S1), the data KN secret key is read from the program area RA2 (step S2). Calculated data KN hidden key data KD of the key device. As a result, generate data KL2 key key cells (step S3).

Datathe key cells read from the program area RA2 (step S4). Data relative to the datathe key cells that have been read, designerour using data KL2 key key cells produced in step S3. Data KS1, KS2, ... key content and information DRM1B, DRM2B, ... management of copyright are selected from datacell key (step S5).

Determine whether the issued command playback (step S6). When the team play has been issued, determine, or contains no data KS1, KS2, ... the content key with which were decrypted content data corresponding to the command playback, data KS1, KS2, ... key content from thesecell key, select the R at the step S5 (step S7).

When the step S7 it is determined that there is data KS1, KS2, ... the content key with which were decrypted content data corresponding to the command playback, the process goes to step S8. After that determine it is possible or not to reproduce the content data corresponding to the command playback, using information DRM1B, DRM2B, ... management of copyright of datathe key cells selected at step S5 (step S8).

After step S7, it was determined that the data KS1, KS2, ... the content key with which designerour data content corresponding to the team play, not contained, the playback is stopped (step S8).

After step S8, it was determined that the data content corresponding to the command playback, you can play using the information DRM1B, DRM2B, ... management of copyright, the optical head unit 175 reads the content data from the program area RA2 (step S9). Using data KS1, KC2, ... key content selected from datathe key cells in the step S5, designerour content data (step S10).

When at the step S8, it was determined that the data content corresponding to the command playback can be played back in accordance with the information DM1B, DRM2B, ... management of copyright, the playback operation is stopped (step S8).

As shown in Fig, when the drive and the player who can work with the optical disc 1 according to the present invention, reproduce the data content, the data content designerour using data KS1, KC2, ... the content key stored in the datathe key cells in the introductory area LI2. Using information DRM1A, DRM2A, ... management of copyright, which is stored in the datathe key cells in the introductory area LI2, control the reproduction and copying of the content data.

On the contrary, as shown in Fig and pig when you know the drive and player, which can not work with the optical disk 1, reproducing the data content, using data KS1, KC2, ... the content key stored in the datathe key cells in the program area RA2, designerour data content. Using information DRM1B, DRM2B, ... management of copyright, which is stored in the datathe key cells in the program area RA2, control the reproduction and copying of the content data.

As shown in Fig and Fig, the number of data KS1, KC2, ... key content from these the key cells in the introductory area LI2 with high secrecy is greater than the number of data KS1, KC2, ... key content from thesethe key cells in the program area RA2 low secrecy. In addition, information management DRM1A, DRM2A, ... management of copyright of datathe key cells in the introductory area LI2 with high secrecy is more favorable than the terms of the management information DRM1B, DRM2B, ... management of copyright of datathe key cells in the program area RA2 low secrecy. In this case, the drive and the player, who can not work with the optical disk 1, can play more music programs and have more added value in comparison with the known drive, which can not work with the optical disk 1.

In the previous example, the optical disk is a two-disc, in which the area of the normal data entry content is separated from the recording area of the encrypted content data. On the other hand, the optical disk may be a single disk.

In addition, in the previous example, the cell data key and data of the secret key is written in the introduction zone and program area. On the other hand, cell data key and data of the secret key can be a recording of the us in the lead zone and program area. On the other hand, cell data key and data of the secret key can be written in the introductory area, outlet area and program area.

According to the present invention, the player and the drive that can work with the optical drive of a new type, refer to the cell key recorded in the introduction area and/or in the outlet zone, get information about the management of copyright and data content key, and reproduce the content data. Players and CD-ROM, which can not work with the optical drive of a new type, refer to the cell key in the software area, receive information about the management of copyright and data content key, and reproduce the content data.

To the cell key recorded in the introduction area and/or in the outlet zone can only be accessed using the playback device, which can operate with an optical disk of a new type. To the cell key in the program area can be accessed using the playback device, which may not work with the optical drive of a new type. As the playback device, which can operate with an optical disk of a new type, use the cell key recorded in the introduction area and/or in the outlet zone, the secrecy is high. On the contrary, as the playback device, which may not work with optical is the new disk type, uses the cell key recorded in the program area, privacy is not ensured.

According to the present invention, the information management of copyright and data content key from the key cells recorded in the program area that is smaller than the cell key recorded in the introduction area and/or outlet area in relation to the quantity and extra values, so it is possible to protect the copyright. In addition, since the number of content being played and the quality of the playback using the playback device, which can operate with an optical disk of a new type, different from the playback by the playback device, which may not work with the optical drive of a new type, it may be different. Thus, it is possible to increase the number of sales of the new device type.

Industrial applicability

As described above, the present invention is suitable for recording media such as an optical disk for recording content data, the recording method and device for recording content data on such a recording medium and for a method of playback of the data content.

1. The recording media that contains the introductory area, an area for recording data, which is formed on the outer peripheral side of the input area, and in which the recorded many pieces of data content, and you is dnow zone, formed on the outer peripheral side area for recording data, in which the first information management of copyright and second information management of copyright, by means of which control the copyrights of many parts of the content data recorded in different positions, the secrecy of which differs from each other.

2. The recording medium according to claim 1, characterized in that any one of the first information management of copyright and second control information copyright recorded in any one of the input zone and output zone, and other information management of copyright is recorded in the area for recording data.

3. The recording medium according to claim 1, characterized in that the first information management of copyright and second information copyright management represents the management information is copyright, which is different from each other in terms of control, which plays many parts of the data content.

4. The recording medium according to claim 3, characterized in that any one of the first information management of copyright and the second copyright management represents the management information, which represents the permission to reproduce many of the parts of the data content, while other information of UE is Alenia copyright is information management, which

is a partial permission to reproduce many of the parts of the data content.

5. The recording medium according to claim 4, wherein one of the first information management of copyright and second control information copyright recorded in at least any one of the input zone and output zone.

6. The recording medium according to claim 5, wherein the other information management of copyright first information management of copyright and second control information copyright recorded in the data area.

7. The recording medium according to claim 1, characterized in that any one of the first information management of copyright and second information management of copyright is more strict in terms of control of many parts of the data content in comparison with other information management of copyright.

8. The recording medium according to claim 7, characterized in that any one of the first information management of copyright and second information management of copyright is more strict in terms of restrictions on the reproduction of many parts of the data content in comparison with other information management of copyright.

9. The recording media of claim 8, wherein any one of the first information management of copyright and in the second control information copyright contains conditions prohibiting the copying of many parts of the content data, whereas other information management of copyright contains permit conditions for copying multiple pieces of data content.

10. The recording medium according to claim 9, wherein the other information management of copyright, which contains the permit conditions for the copying of many parts of the content data recorded in at least any one of the input zone and output zone.

11. The recording medium according to claim 9, characterized in that one of the first information management of copyright and second information management of copyright, which contains conditions prohibiting the copying of many parts of the content data recorded in the area for recording data.

12. The recording medium according to claim 1, characterized in that at least one of multiple pieces of data of the content recorded in the area for recording the data is encrypted and recorded, and

the first information management of copyright and second information management of copyright is recorded together with the data key with which designerour encrypted part of the data content.

13. The recording medium according to item 12, wherein the first information management of copyright and second information management of copyright is encrypted and recorded together with the data key with which designerour encrypted part of the data content.

14. The recording method containing the steps according to which record many parts of the content data on the recording medium, and

write the first information management of copyright and second information management of copyright, by means of which control the copyrights of many parts of the content data located in different positions of the recording medium, and the secrecy different positions different from each other.

15. The recording method according to 14, wherein one of the first information management of copyright and second control information copyright recorded in at least any one of the introductory zone, which is formed on the inner peripheral side of the recording area in which many pieces of data content record, and outlet zone, which is formed on the outer peripheral side of the recording area, and other information management of copyright record in the zone record.

16. The recording method according to item 15, wherein the first information management of copyright and second management information are copyright information copyright management, which differ from each other in terms of management, at which reproduce many parts of the data content.

17. The way you write is about P16, characterized in that any one of the first information management of copyright and the second copyright management information is management, which is a permission to reproduce many of the parts of the data content, while other information copyright management information is management, which is a partial permission to reproduce many of the parts of the data content.

18. The recording method according to item 15, wherein any one of the first information management of copyright and second information management of copyright is more strict in terms of control of many parts of the data content in comparison with other information management of copyright.

19. The way you write on p, characterized in that any one of the first information management of copyright and second information management of copyright is more strict in terms of restrictions on the reproduction of many parts of the data content in comparison with other information management of copyright.

20. The recording method according to claim 19, characterized in that any one of the first information management of copyright and second control information copyright contains conditions prohibiting the copying of many cha the TEI content data, whereas other information management of copyright contains permit conditions for copying multiple pieces of data content.

21. The recording method according to claim 20, wherein the other information management of copyright, which contains the permit conditions for the copying of many parts of the content data recorded in at least any one of the input zone and output zone.

22. The recording method according to claim 20, characterized in that the first information management of copyright and second information management of copyright, which contains conditions prohibiting the copying of many parts of the content data recorded in the area for recording data.

23. The recording method according to 14, characterized in that at least one of a variety of parts of the content data encrypted and recorded, and on which the first information management of copyright and second management information copyright record, along with key data with which designerour encrypted part of the data content.

24. The recording method according to item 23, wherein the first information management of copyright and second management information copyright encrypt and record with the data key with which designerour encrypted part of the data content.

25. Methods for the recording of recording media according to 15, characterized in that the data relating to the software to read the other information management of copyright, recording in the recording area in which recording multiple pieces of data content.

26. The recording device the recording media that contains the tool head is designed for recording data on the recording media

a means of encoding data to be written, and supply the encoded data in a portion of the head, and

management tool designed to record multiple parts of the content data on the recording medium and the control part of the head so that it writes the first information management of copyright and second information management of copyright, by means of which control the copyrights of many parts of the content data in different position of the recording medium, and the secrecy different positions different from each other.

27. The recording device of the recording medium on p, characterized in that the control is executed so as to perform control so that one of the first information management of copyright and second information management of copyright was recorded in at least any one of the introductory zone, which is formed on the inner peripheral side of the recording area in which to record the ANO many parts of the data content, and outlet zone, which is formed on the outer peripheral side of the recording area, and in which control is performed so as to perform control so that other information management of copyright was recorded in district records.

28. The recording device of the recording medium according to item 27, wherein the first information management of copyright and second management information are copyright information copyright management, which differ from each other in terms of control, which plays many parts of the data content.

29. The recording device of the recording medium on p, characterized in that any one of the first information management of copyright and the second copyright management information is management, which is a permission to reproduce many of the parts of the data content, while other information copyright management information is management, which is a partial permission to reproduce many of the parts of the data content.

30. The recording device of the recording medium according to item 27, wherein any one of the first information management of copyright and second information management of copyright is more stringent conditions in the management of many parts of the content data, what other information management of copyright.

31. The recording device of the recording medium according to item 30, wherein any one of the first information management of copyright and second information management of copyright is more strict in terms of restrictions on the reproduction of many parts of the data content than other information management of copyright.

32. The recording device of the recording medium on p, characterized in that any one of the first information management of copyright and second control information copyright contains conditions prohibiting the copying of many parts of the content data, while other information management of copyright contains permit conditions for copying multiple pieces of data content.

33. The recording device of the recording medium on p, wherein the other information management of copyright, which contains the permit conditions for the copying of many parts of the content data recorded in at least any one of the input zone and output zone.

34. The recording device of the recording medium on p, wherein one of the first information management of copyright and second information management of copyright, which contains conditions prohibiting the copying of many frequent the th content data, recorded in the area for recording data.

35. The recording device of the recording medium on p, characterized in that the management tool designed to encrypt and record at least one of a variety of parts of the data content and to record the first information management of copyright and second information management of copyright together with the data key with which designerour encrypted part of the data content.

36. The recording device of the recording medium on p, characterized in that the management tool designed to encrypt and record the first information management of copyright and second information management of copyright together with the data key with which designerour encrypted part of the data content.

37. How to play the recording media that contains the stages, whereby read any one of the first information management of copyright and second information management of copyright with the recording media that contains the introductory area, an area for recording data, which is formed on the outer peripheral side of the input area, and in which the recorded many pieces of data content, and drainage area, formed on the outer peripheral side area for recording data, where the first management information of the author's right and the second management information copyright to help manage the copyrights of many parts of the content data recorded in different positions, the secrecy of which differs from each other, and control at least the playback operation for the content data that is read from the data region in accordance with the information management of copyright that was read.

38. How to play the recording media according to clause 37, wherein any one of the first information management of copyright and second control information copyright recorded in any one of the input zone and output zone, while other information management of copyright is recorded in the area for recording data.

39. How to play the recording media according to 38, wherein the data related to the software to read the other information management of copyright is recorded on the recording medium, and which after reading the data related to the software, read the other information management of copyright.

40. How to play the recording media according to clause 37, wherein the first information management of copyright and second information copyright management is information management of copyright, which differ from the other in terms of management, in which plays many parts of the data content.

41. How to play the recording media on p, characterized in that any one of the first information management of copyright and the second copyright management information is management, which is a permission to reproduce many of the parts of the data content, while other information copyright management information is management, which is a partial permission to reproduce many of the parts of the data content.

42. How to play the recording media according to paragraph 41, wherein one of the first information management of copyright and second control information copyright record, at least in any one of the input zone and output zone.

43. How to play the recording media according to 42, wherein the other information management of copyright from the first information management of copyright and second control information copyright recorded in the data area.

44. How to play the recording media according to clause 37, wherein any one of the first information management of copyright and second information management of copyright is more strict in terms of control the population of many parts of the content data, what other information management of copyright.

45. How to play the recording media according to item 44, wherein any one of the first information management of copyright and second information management of copyright is more strict in terms of restrictions on the reproduction of many parts of the data content than other information management of copyright.

46. How to play the recording media according to clause 37, wherein at least one of a variety of parts of the content data recorded in the area for recording the data was encrypted and recorded, on which the first information management of copyright and second information management of copyright were recorded along with the data key with which designerour encrypted part of the content data and by which the encrypted data designerour using the key data, which are read from the recording media.

47. How to play the recording media according to item 46, wherein the first information management of copyright and second information management of copyright has been encrypted and recorded along with the data key with which designerour encrypted part of the data content that other key data with which designerour encrypted data was Zap the San on the recording medium, and which, by means of at least other key data read from the recording media, designerour first information management of copyright, the second management information is copyright and the data key.



 

Same patents:

FIELD: optical data carriers.

SUBSTANCE: for protecting optical disk from recording, information concerning protection from recording is read, which is previously recorded in at least one zone of starting or ending area of data carrier, and it is determined, whether the latter is in state of recording protection. In variant, when carrier is placed in cassette body, and body has aperture for forbidding recording protection of data on disk, it is determined, if recording protection state of recording protection data written on disk is matches with state of recording protection of said aperture, and recording of new data is prevented, if said protection data and aperture position forbid recording. In a variant information concerning recording protection is stored in zones of disk identification of at least one of zones of starting and ending area of carrier.

EFFECT: higher efficiency.

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FIELD: data carriers.

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FIELD: optical data carriers.

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3 cl, 9 dwg

FIELD: optical data carriers.

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2 cl, 9 dwg

FIELD: data carriers.

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2 cl, 5 dwg

FIELD: data carriers.

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7 cl, 8 dwg

FIELD: optical data carriers.

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2 cl, 7 dwg

FIELD: optical data carriers.

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5 cl, 16 dwg

The invention relates to a system for recording and/or playback in real-time the real-time files

The invention relates to the media, as well as recording, playback and transmission of video

The invention relates to the distribution of free areas to control the damage on the media drive, the method of manufacturing and a drive controller

FIELD: optical data carriers.

SUBSTANCE: for protecting optical disk from recording, information concerning protection from recording is read, which is previously recorded in at least one zone of starting or ending area of data carrier, and it is determined, whether the latter is in state of recording protection. In variant, when carrier is placed in cassette body, and body has aperture for forbidding recording protection of data on disk, it is determined, if recording protection state of recording protection data written on disk is matches with state of recording protection of said aperture, and recording of new data is prevented, if said protection data and aperture position forbid recording. In a variant information concerning recording protection is stored in zones of disk identification of at least one of zones of starting and ending area of carrier.

EFFECT: higher efficiency.

5 cl, 16 dwg

FIELD: optical data carriers.

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EFFECT: higher efficiency.

2 cl, 7 dwg

FIELD: data carriers.

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7 cl, 8 dwg

FIELD: data carriers.

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2 cl, 5 dwg

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EFFECT: higher efficiency.

2 cl, 9 dwg

FIELD: optical data carriers.

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3 cl, 9 dwg

FIELD: data carriers.

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EFFECT: higher recording and reproduction stability due to possible processing of larger defects during hot swap, provided by joining several zones within limits of one group.

5 cl, 9 dwg

FIELD: data carriers.

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EFFECT: higher efficiency.

4 cl, 21 dwg

FIELD: data carriers.

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EFFECT: higher efficiency.

5 cl, 59 dwg

FIELD: optical data carriers.

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EFFECT: higher speed of operation, higher efficiency.

6 cl, 8 dwg

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