Information recording/reproducing apparatus, and information recording medium

• US 20040030983A1
• Filed: 06/05/2003
• Published: 02/12/2004
• Est. Priority Date: 12/26/2000
• Status: Active Grant

• Current Assignee: Pioneer Corporation
• Original Assignee: Pioneer Corporation
• Inventors: Tomita, Yoshimi
• Granted Patent: US 7,266,753 B2
• Time in Patent Office: Days
• US Class Current: 714/776
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 20/1403 characterised by the use of two levels
• CPC Class Codes: G11B 20/1833 by adding special lists or symbols to the coded information G11B20/1806, G11B20/1866 take precedence
• CPC Class Codes: G11B 2020/1277 for managing gaps between two recordings, e.g. control data in linking areas, run-in or run-out fields, guard or buffer zones
• CPC Class Codes: G11B 2020/1287 Synchronisation pattern, e.g. VCO fields specific bit sequences of sync patterns G11B20/1403; A/V synchronisation G11B27/00
• CPC Class Codes: G11B 2020/1288 Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
• CPC Class Codes: G11B 2020/1292 Enhancement of the total storage capacity
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs

Abstract

In an information recording, a first data processor divides input data into a plurality of frames so as to arrange the plurality of frames for each unit block. The unit block is a unit of error-correction with respect to the input data and the frames include first identification information, respectively. A second data processor inserts a linking block on a boundary portion between unit blocks in the record data. The unit blocks are adjacent to each other. The linking block includes a second identification information and the second identification information is different from each of the first identification information. A controller controls to record the unit block and the linking block on the information recording medium.

Claims

1. An information recording apparatus for recording information comprising:

a first data processor for dividing input data into a plurality of frames so as to arrange the plurality of frames for each unit block, said unit block being a unit of error-correction with respect to the input data, said frames including first identification information, respectively;

a second data processor for inserting a linking block on a boundary portion between at least one pair of unit blocks, at least one pair of said units blocks being adjacent to each other, said linking block including second identification information, said second identification information being different from each of said first identification information; and

a controller for controlling to record the unit block and the linking block on the information recording medium.

2. An information recording apparatus according to claim 1, wherein said second data processor inserts the linking block on each of the boundary portions between said unit blocks.

3. An information recording apparatus according to claim 1, wherein said frame is a sync frame, said first identification information is a first sync code, said unit block is an error control code (ECC) block whose format is divided into the sync frames which include the first sync frames, respectively, said second identification information is a second sync code and said linking block comprises at least one sync frame to which the second sync code is added, said second sync code being different from each of the first sync codes of the sync frames.

4. An information recording apparatus according to claim 3, wherein said linking block is configured by three or less sync frames.

5. An information recording apparatus according to claim 4, wherein said ECC block is configured by 16 sectors, and each of said sectors is configured by 26 sync frames to which the sync codes are added, respectively.

6. An information recording apparatus according to claim 1, wherein said second data processor inserts the linking block on an emboss area in the boundary portion, said emboss area being previously formed on a recording track of the information recording medium, said emboss area being comprised of an emboss pit line.

7. An information recording apparatus according to claim 1, further comprising a recording unit for recording control information on the linking block inserted by the second data processor, said control information being required for the reproduction operation.

8. An information recording apparatus according to claim 7, wherein said control information is information required for the reproduction operation with respect to the unit block corresponding to the linking block.

9. An information recording apparatus according to claim 8, wherein said information required for the reproduction operation includes at least one of copy protection information for protecting a copy of the unit block corresponding to the linking block and key information related to a scramble processing with respect to the unit block corresponding to the linking block, said framed input data in the unit block being scrambled according to the key information.

10. A method of recording record data on an information recording apparatus comprising the step of:

dividing input data into a plurality of frames so as to arrange the plurality of frames for each unit block, said unit block being a unit of error-correction with respect to the input data, said frames including first identification information, respectively;

inserting a linking block on a boundary portion between at least one pair of unit blocks, at least one pair of said units blocks being adjacent to each other, said linking block including second identification information, said second identification information being different from each of said first identification information; and

controlling to record the unit block and the linking block on the information recording medium.

11. A method of recording record data according to claim 10, wherein said inserting step inserts the linking block on each of the boundary portions between said unit blocks.

12. A method of recording record data according to claim 10, wherein said frame is a sync frame, said first identification information is a first sync code, said unit block is an error control code (ECC) block whose format is divided into the sync frames which include the first sync frames, respectively, said second identification information is a second sync code and said linking block comprises at least one sync frame to which the second sync code is added, said second sync code being different from each of the first sync codes of the sync frames.

13. A method of recording record data according to claim 12, wherein said linking block is configured by three or less sync frames.

14. A method of recording record data according to claim 12, wherein said ECC block is configured by 16 sectors, and each of said sectors is configured by 26 sync frames to which the sync codes are added, respectively.

15. A method of recording record data according to claim 10, wherein said inserting step inserts the linking block on an emboss area in the boundary portion, said emboss area being previously formed on a recording track of the information recording medium, said emboss area being comprised of an emboss pit line.

16. A method of recording record data according to claim 10, further comprising recording control information on the linking block inserted by the inserting step, said control information being required for the reproduction operation.

17. An information recording medium on which record data is previously recorded, comprising:

a recording area on which a plurality of frames are arranged for each unit block, said record data being divided into the plurality of frames to which first identification information is added, respectively, said unit block being a unit of error-correction with respect to the record data; and

a linking block inserted on a boundary portion between at least one pair of unit blocks in the record data, at least one pair of said units blocks being adjacent to each other, said linking block including second identification information, said second identification information being different from each of said first identification information.

18. An information recording medium according to claim 17, wherein said linking block is inserted on each of the boundary portions between said unit blocks.

19. An information recording medium according to claim 17, wherein said frame is a sync frame, said item of first identification information is a first sync code, said unit block is an error control code (ECC) block whose format is divided into the sync frames which include the first sync frames, respectively, said second identification information is a second sync code and said linking block comprises at least one sync frame to which the second sync code is added, said second sync code being different from each of the first sync codes of the sync frames.

20. An information recording medium according to claim 19, wherein said linking block is configured by three or less sync frames.

21. An information recording medium according to claim 17, wherein said ECC block is configured by 16 sectors, and each of said sectors is configured by 26 sync frames to which the sync codes are added, respectively.

22. An information recording medium according to claim 17, wherein said linking block includes control information required for reproduction control.

23. An information recording medium according to claim 17, further comprising an emboss area which is composed of a line of emboss pits and is formed on a recording track of the information recording medium, said recording track corresponding to the linking block.

24. An information recording medium according to claim 17, wherein said emboss area is arranged within a predetermined range in the linking block at a predetermined interval with respect to recording areas adjacent to the linking block on the recording track.

25. An information recording medium according to claim 17, wherein control information is recorded on said linking block, said control information being required for a reproduction operation of the record data from the information recording medium.

26. An information recording medium according to claim 17, wherein said control information is information required for a reproduction operation with respect to the unit block corresponding to the linking block.

27. An information recording medium according to claim 17, wherein said information required for the reproduction operation includes at least one of copy protection information for protecting a copy of the unit block corresponding to the linking block and key information related to a scramble processing with respect to the unit block corresponding to the linking block, said framed record data in the unit block being scrambled according to the key information.

28. An information reproducing apparatus for reproducing record data which is recorded on the information recording medium according to claim 17, comprising:

a first data processor for reproducing, as reproduction data, the record data recorded on the image recording medium; and

a second data processor for detecting the second identification information from the reproduction data, thereby identifying a position of the linking block.

29. A information reproducing apparatus according to claim 28, wherein said second data processor includes a sampling unit for sampling a clock signal synchronized with the reproduction data while reproducing the reproduction data, controls the sampling unit to stop the sampling of clock signal during a predetermined period that the linking block is reproduced, and after the predetermined period elapses, controls the sampling unit to start the sampling of clock signal again.

30. An information reproducing apparatus according to claim 29, wherein said sampling signal includes a pulse locked loop (PLL) unit whose phase and frequency are controlled in conjunction with the reproduction data, makes the PLL unit hold state during a predetermined period that the linking block is reproduced, and after the predetermined period elapses, controls the PLL unit to start capturing operation.

31. An information recording medium for recording thereon record data, in which the record data comprises a plurality of unit blocks and a plurality of linking information, said unit block being a unit of error-correction with respect to the record data, each of said linking information connecting each pair of unit blocks adjacent to each other, said information recording medium comprising:

first areas previously storing thereon recording position information representing recording positions on the information recording medium, respectively; and

second areas each of which is N times as wide as each of the first recording areas, said N being a natural number,

wherein each of said recording position information represents that each of said unit blocks and each of said linking information corresponding thereto ought to be recorded on each of said second areas.

32. A method of preventing an illegal copy in accordance with a recording format for recording record data for each unit block, said unit block being a unit of error-collection with respect to the record data, said method of comprising:

forming a linking block on a boundary portion between at least one pair of the unit blocks according to the recording format, at least one pair of said units blocks being adjacent to each other;

arranging an emboss area on a recording track on an information recording medium, said emboss area being composed of an emboss pit line, said emboss area being overlapped on the emboss area, thereby preventing recording in the emboss area; and

recording control information on the linking block on a reproduction-only information recording medium, said reproduction-only information recording medium corresponding to the recording format, said control information being required for reproduction operation.

33. A method of preventing an illegal copy according to claim 32, wherein said control information includes copy protection information related to the unit block.

34. A method of preventing an illegal copy according to claim 32, wherein said control information includes key data related to a scramble processing with respect to the unit block, said record data in the unit block being scrambled according to the key data.