Information recording device and method, information reporducing device and method, recording medium, program and disc recoring medium

FIELD: invention is related to a device and a method for information recording and reproducing.

SUBSTANCE: ECC block is created using the RS (248, 216, 33). Of the data having a length of 216 bytes (symbols), only 16 bytes are dedicated to the BCA data, and the remaining 200 bytes are used for the fixed data having a predetermined value. Using the fixed data having 200 bytes and the BCA data having 16 bytes, parities having 32 bytes (symbols) are calculated. Only the BCA data of 16 bytes and the parities of the previous 16 bytes of the parities of 32 bytes, that is, a total of 32 bytes (symbols), are recorded to the recording areas with partitioning of the optical disc into packages. The fixed data of 200 bytes are used in decoding with error correction. The unrecorded parities of 16 bytes are processed as having been erased.

EFFECT: capability to enhance the error correction characteristics in the recording area with partitioning of the optical disc into packages.

21 cl, 19 dwg

 

The text descriptions are given in facsimile form.

1. The device recording information for recording auxiliary information on a disk recording medium having a data area for recording main data and a recording area divided into packets for recording auxiliary information containing

means for obtaining auxiliary information, which consists of (d) of bytes

the means of forming blocks, used for production of blocks with errors, appropriate ejstvujuschij auxiliary information using a code with error correction reed-Solomon (RS (m, n, k)), which has the same code length (m), data length (n) and the distance (k), the code error correction main data recorded in the data area, the data having a length d which is less than the n and fixed data, the length of which is n-d,

means for modulating blocks with fixing bugs worked out by using the forming blocks, and

means for writing blocks of error correction, modulated by the modulation means, in a recording area divided into packages that are located on a disk recording medium.

2. The device recording information according to claim 1, characterized in that the modulation means modulates only the data portion of the parity of length k-1 blocks with errors.

3. The device recording information according to claim 2, characterized in that the modulation means modulates only the data parity (k-1)/2, which are part of the parity of length k-1 blocks with errors.

4. The device recording information according to claim 1, characterized in that the means of forming blocks uses RS (248, 216, 33) as a code RS (m, n, k) error correction.

5. The method of recording information to a recording device that records supporting information on the disk recording medium having a data area for recording main data and the recorded area with rabbie is receiving packets for recording auxiliary information, contains

the stage of obtaining the auxiliary information, which consists of (d) of bytes

the step of forming a block of auxiliary information corresponding to the auxiliary information code with error correction reed-Solomon (RS (m, n, k)), which has the same code length (m), data length (n) and the distance (k), the code error correction main data recorded in the data area, the data having a length d which is less than the n and fixed data, the length of which is n-d,

phase modulation block with error correction obtained at the stage of forming blocks, and

stage write with error correction, modulation phase modulation in the recording area divided into packages that are located on a disk recording medium.

6. The recording medium containing the program under which the device records information records auxiliary data on a disk recording medium having a data area for recording main data and a recording area divided into packets for recording auxiliary information, the program contains:

the stage of obtaining the auxiliary information, which consists of (d) of bytes

the step of forming a block of auxiliary information corresponding to the auxiliary information code with repairs is an error reed-Solomon (RS (m, n, k)), which has the same code length (m), data length (n) and the distance (k), the code error correction main data recorded in the data area, the data having a length d which is less than the n and fixed data, the length of which is n-d,

phase modulation blocks with errors generated at the stage of forming blocks, and

stage write with error correction, modulation processing on the phase modulation in the recording area divided into packages that are located on a disk recording medium.

7. The disk recording medium having a data area for recording main data and a recording area divided into packets for recording auxiliary information,

in which the auxiliary information consists of (d) bytes, encoded and recorded in the recording area divided into packets using the code with the error correction reed-Solomon (RS (m, n, k)), which has the same code length (m), data length (n) and the distance (k), the code error correction main data recorded in the data area, the data having a length d which is less than the n and fixed data, the length of which is n-d.

8. The device recording information to record the main data on a disk recording medium having a data area for recording main data and a recording area divided into packets for recording auxil athelney information contains

first means for obtaining auxiliary information consisting of (d) bytes, and zapisano in the recording area divided into batches, where the auxiliary information is divided into blocks to generate blocks of error correction corresponding to the auxiliary information code with error correction reed-Solomon (RS (m, n, k)), which has the same code length (m), data length (n) and the distance (k), the code error correction main data recorded in the data area, the data having a length d which is less than the n and fixed data, the length of which is n-d,

the second means of obtaining fundamental data,

the means of encryption key data obtained by the second means of obtaining on the basis of the auxiliary information obtained by the first means of obtaining,

means for modulating the main data encrypted using encryption, and

means for recording the main data modulated by using the modulation in the data area on a disk recording medium.

9. The device recording information of claim 8, wherein the encoded only the data portion of the parity of length k-1 blocks with errors.

10. The device recording information according to claim 9, characterized in that the encoded only Dan is haunted parity (k-1)/2, which are part of the parity of length k-1, blocks with errors.

11. The device recording information of claim 8, wherein the code RS (m, n, k) error correction is RS(248, 216, 33).

12. The method of recording information to a recording device that records basic data on a disk recording medium having a data area for recording main data and a recording area divided into packets for recording auxiliary information containing

the first stage of obtaining auxiliary information consisting of (d) bytes, and is recorded in the recording area divided into batches, where the auxiliary information is divided into blocks to generate blocks of error correction corresponding to the auxiliary information code with error correction reed-Solomon (RS (m, n, k)), which has the same code length (m), data length (n) and the distance (k), the code error correction main data recorded in the data area, the data having a length d which is less than the n and fixed data, the length of which is n-d,

the second stage of basic information,

stage encryption key data obtained in the second step of obtaining, on the basis of the auxiliary information acquired by the first acquisition phase,

the phase modulation of the main the data, encrypted at the encrypting, and

the stage of recording of the main data modulated by the phase modulation in the data area on a disk recording medium.

13. The recording medium containing the program under which the device records information records basic data on a disk recording medium having a data area for recording main data and a recording area divided into packets for recording auxiliary information, the program contains

the first stage of obtaining auxiliary information consisting of (d) bytes, and is recorded in the recording area divided into batches, where the auxiliary information is divided into blocks to generate blocks of error correction corresponding to the auxiliary information code with error correction reed-Solomon (RS (m, n, k)), which has the same code length (m), data length (n) and the distance (k), the code error correction main data recorded in the data area, the data having a length d which is less than the n and fixed data, the length of which is n-d,

the second stage of obtaining basic data encrypting key data resulting from processing at the second stage on the basis of the auxiliary information acquired in the processing at the first step of obtaining,

the stage is odulele basic data encrypted as a result of processing at the stage of encryption, and

the stage of recording of the main data, modulated as a result of processing on the phase modulation in the data area on a disk recording medium.

14. The playback device information for reproducing main data from a disc recording medium having a data area in which the recorded main data, and a recording area divided into packets, which recorded the supporting information contains

means for obtaining auxiliary information consisting of (d) bytes, and is recorded in the recording area divided into batches, where the auxiliary information is divided into blocks to generate blocks of error correction corresponding to the auxiliary information code with error correction reed-Solomon (RS (m, n, k)), which has the same code length (m), data length (n) and the distance (k), the code error correction main data recorded in the data area, the data having a length d, which is smaller than the n and fixed data, the length of which is n-d,

the means of reproduction of the main data from the data area,

means for demodulating the main data reproduced by using the playback, and

means of decoding the main data demodulated by using the application is as demodulation on the basis of auxiliary information, obtained by using the retrieve.

15. The playback device information 14, characterized in that the encoded only the data portion of the parity of length k-1 blocks with errors.

16. The playback device information according to 15, characterized in that the encoded data only parity (k-1)/2, which are part of the parity of length k-1, blocks with errors.

17. The playback device information 14, wherein the code RS (m, n, k) error correction is RS(248, 216, 33).

18. The playback device information 14, wherein if the disk recording medium recorded multiple blocks with error correction, the means of obtaining selects a predefined block with error correction on the basis of the identification number and the block number recorded in the header block with error correction, and receives auxiliary information about the selected block with error correction.

19. The playback device information p, wherein if the error of the selected block with error correction set of blocks with errors cannot be corrected, the means of obtaining selects another block with error correction with the appropriate identification number and the block is.

20. The method, information reproduction device for reproduction of information, which reproduces the main data from a disc recording medium having a data area in which the recorded main data, and a recording area divided into packages, in which the recorded auxiliary information containing

the stage of obtaining the auxiliary information consisting of (d) bytes and recorded in the recording area divided into batches, where the auxiliary information is divided into blocks to generate blocks of error correction corresponding to the auxiliary information code with error correction reed-Solomon (RS (m, n, k)), which has the same code length (m), data length (n) and the distance (k), the code error correction main data recorded in the data area, the data having a length d, which less than the n and fixed data, the length of which is n-d,

the phase of the master data from the field data

phase demodulating the main data reproduced during playback, and

the step of decoding the main data demodulated by the phase demodulation on the basis of the auxiliary information acquired in the acquisition phase.

21. The recording medium containing the program, under which the playback device information the EGM is proizvodi main data from a disc recording medium, having a data area in which the recorded main data, and a recording area divided into packages, in which the recorded auxiliary information, the program contains

the stage of obtaining the auxiliary information consisting of (d) bytes, and is recorded in the recording area divided into batches, where the auxiliary information is divided into blocks to generate blocks of error correction corresponding to the auxiliary information code with error correction reed-Solomon (RS (m, n, k)), which has the same code length (m), data length (n) and the distance (k), the code error correction main data recorded in the data area, the data having a length d, which is smaller than the n and fixed data, the length of which is n-d,

the phase of the master data from the field data

phase demodulating the main data reproduced during playback, and

the step of decoding the main data demodulated by the phase demodulation on the basis of the auxiliary information acquired in the acquisition phase.



 

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