Optical data system and optical disk relating thereto

• US 6,570,839 B2
• Filed: 08/03/2001
• Issued: 05/27/2003
• Est. Priority Date: 05/10/1991
• Status: Expired due to Fees

• Current Assignee: Discovision Associates (Pioneer Corporation)
• Original Assignee: Discovision Associates (Pioneer Corporation)
• Inventors: Yamazaki, Yasuhiro, Vitullo, Ronald, Kimura, Noboru
• Primary Examiner(s): Edun, Muhammad
• Application Number:
  US09/921,805
• Publication Number:
  US 20020009046A1
• Time in Patent Office: 662 Days
• Field of Search: 369/47.1, 369/47.11, 369/47.15, 369/47.28, 369/53.1, 369/59.1, 369/59.19, 369/59.25, 369/275.1, 369/275.3
• US Class Current: 369/275.3
• CPC Class Codes: G11B 11/10506 by modulating only the light beam of the transducer
• CPC Class Codes: G11B 11/10513 one of the light beam or the magnetic field being modulated by data and the other by a clock or frequency generator
• CPC Class Codes: G11B 11/10515 Reproducing compensating pit shift G11B11/1053
• CPC Class Codes: G11B 11/1053 to compensate for the magnetic domain drift or time shift
• CPC Class Codes: G11B 11/10597 Adaptations for transducing various formats on the same or different carriers
• CPC Class Codes: G11B 19/00 Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
• CPC Class Codes: G11B 19/02 Control of operating function, e.g. switching from recording to reproducing
• CPC Class Codes: G11B 19/12 by sensing distinguishing features of or on records, e.g. diameter end mark
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 20/10009 Improvement or modification of read or write signals
• CPC Class Codes: G11B 20/1258 where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
• CPC Class Codes: G11B 20/1262 with more than one format/standard, e.g. conversion from CD-audio format to R-DAT format
• CPC Class Codes: G11B 20/1426 conversion to or from block codes or representations thereof
• 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 2007/0006 adapted for scanning different types of carrier, e.g. CD & DVD
• CPC Class Codes: G11B 2020/1434 8 to 9 modulation
• CPC Class Codes: G11B 2220/2525 Magneto-optical [MO] discs
• CPC Class Codes: G11B 27/3027 used signal is digitally coded
• CPC Class Codes: G11B 7/0045 Recording G11B7/006, G11B7/0065 take precedence
• CPC Class Codes: G11B 7/00456 Recording strategies, e.g. pulse sequences G11B7/0062 takes precedence
• CPC Class Codes: G11B 7/005 : Reproducing G11B7/0065 takes precedence
• CPC Class Codes: G11B 7/0079 : Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas
• CPC Class Codes: G11B 7/013 : for discrete information, i.e. where each information unit is stored in a distinct discrete location , e.g. digital information formats within a data block or sector
• CPC Class Codes: G11B 7/126 : Circuits, methods or arrangements for laser control or stabilisation

Abstract

An optical disk includes a plurality of tracks that are arranged in a predetermined number of zones. Each track is divided into a plurality of sectors. The sector number is different in each zone. The sector increases in number moving outwardly on the disk. The optical disk also includes a format marking. The format marking includes a sector field for each sector. The format marking is erasably recorded.

Claims

1. An optical disk comprising:

a plurality of tracks arranged in a predetermined number of zones, each track being divided into a plurality of sectors, the sector number being different in each zone, and increasing in number moving outwardly on the disk; and

a format marking including a sector field for each sector, the format marking being erasably recorded.

2. The optical disk according to claim 1 wherein the plurality of tracks includes approximately ten thousand tracks.

3. The optical disk according to claim 1 wherein the predetermined number of zones includes approximately twenty-one zones numbered consecutively from a center of the disk.

4. The optical disk according to claim 3 wherein each zone includes approximately 480 tracks and an outward zone includes approximately 476 tracks.

5. The optical disk according to claim 3 wherein each zone is recorded at a different frequency.

6. The optical disk according to claim 1 wherein format marking is recorded using a data recording technique.

7. The optical disk according to claim 6 wherein the recording technique is of a magneto-optical type.

8. The optical disk according to claim 1 wherein the format marking further includes a header field for each sector and a control track.

9. The optical disk of claim 1 wherein each sector includes a sector mark, a header, and a recording field in which approximately 512 bytes can be recorded.

10. The optical disk of claim 9 wherein the sector mark comprises a pattern indicative of a start of the sector.

11. The optical disk of claim 9 wherein a length of the sector mark is approximately 80 channel bits.

12. The optical disk of claim 10 wherein the pattern is in a NRZI format.

13. The optical disk according to claim 9 wherein each sector includes an address mark field (AM) comprising a pattern indicative of drive-byte synchronization for a following ID field.

14. The optical disk according to claim 13 wherein the address mark field (AM) has a pattern 1 1 0 0 0 0 1 0 1.

16. The optical disk of claim 9 wherein each sector includes two postamble fields including a first postamble following an ID and a second postamble following a data field, both postamble fields intended to allow closure of a last byte of a preceding CRC or data field.

17. The optical disk according to claim 16 wherein the two postamble fields are equal in length.

18. The optical disk according to claim 17 wherein the postamble fields have 9 bits of the following pattern 1 0 0 0 1 0 0 0 1.

19. The optical disk according to claim 9 wherein each sector includes one gap field (GAP1) localized in a beginning of the header.

20. The optical disk according to claim 19 wherein the gap field (GAP1) has a nominal length of 9-channel bits.

21. The optical disk according to claim 19 wherein bits of the gap field (GAP1) are zeroes.

22. The optical disk according to claim 9 wherein each sector includes a gap field (GAP2) being a first field of a recording field intended to give the disk drive a predetermined time for processing after it has finished reading the header and before it writes or reads following fields.

23. The optical disk according to claim 22 wherein the gap field (GAP2) has a nominal length of 54 channel bits.

24. The optical disk according to claim 9 wherein each sector includes a synchronization field (SYN) preceding a data field intended to allow a drive to obtain byte synchronization for a following data field.

25. The optical disk according to claim 24 wherein the synchronization field (SYN) has a length of 27 bits.

26. The optical disk according to claim 25 wherein the synchronization field (SYN) is recorded with a bit pattern 1 0 1 0 0 0 1 1 1 1 1 0 1 1 0 0 0 1 1 1 1 0 0 0 1 1 1.

27. The optical disk according to claim 25 wherein the recording field comprises:

a plurality of bytes of user data;

a plurality of bytes of cyclic redundance check (CRC) parity used by an error detection and correction system to rectify erroneous data;

a plurality of bytes for error correction code (ECC) parity used by the error detection and correction system to rectify erroneous data; and

a plurality of bytes for resynchronization for enabling a respective drive to regain byte synchronization after a large defect in the data field.

28. The optical disk according to claim 27 wherein the recording field has a length of approximately 639 bytes, each byte representing 9 channel bits and including, 512 bytes of user data, 4 bytes of cyclic redundance check (CRC) parity, 80 bytes of error correction code (ECC) parity, 39 bytes for resynchronization, and 4 other bytes.

29. The optical disk according to claim 27 wherein the error correction code is a Reed-Solomon code of degree 16.

30. The optical disk according to claim 27 wherein said resynchronization bytes each have a length of 9 bits.

31. The optical disk according to claim 30 wherein the resynchronization bytes have a following pattern 1 0 0 0 1 0 0 0 1.

32. The optical disk according to claim 30 wherein the resynchronization bytes are located in the data field every 15 data byte.

15. The optical disk of 9 wherein each sector includes three ID fields each containing an address of the sector which includes a track number, a sector number, and a cyclic redundancy check (CRC) byte.

33. An optical disk comprising:

a plurality of tracks arranged in a predetermined number of zones, each track being divided into a plurality of sectors, the sector number being different in each zone, and increasing in number moving outwardly on the disk; and

a format marking including sector fields, the sector fields for all zones being recorded at a same frequency.

34. The optical disk according to claim 33 wherein the plurality of tracks includes approximately ten thousand tracks.

35. The optical disk according to claim 33 wherein the predetermined number of zones includes approximately twenty-one zones numbered consecutively from a center of the disk.

36. A system comprising:

an optical disk comprising;

a plurality of tracks arranged in a predetermined number of zones, each track being divided into a plurality of sectors, the sector number being different in each zone, and increasing in number moving outwardly on the disk, and

format marking including a sector field for each sector, the format marking being erasably recorded;

a disk drive for receiving the optical disk;

means for reading and writing data respectively from and onto the optical disk received by the drive.

37. The system according to claim 36 wherein the plurality of tracks includes approximately ten thousand tracks.

38. The system according to claim 36 wherein the predetermined number of zones includes approximately twenty-one zones numbered consecutively from a center of the disk.

39. The system according to claim 38 wherein each zone includes approximately 480 tracks and an outward zone includes approximately 476 tracks.

40. The system according to claim 38 wherein each zone is recorded at a different frequency.