Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks and non-pit data

• US 6,469,980 B1
• Filed: 05/12/2000
• Issued: 10/22/2002
• Est. Priority Date: 04/15/1996
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Kamioka, Yuichi, Furumiya, Shigeru, Ishida, Takashi, Gushima, Toyoji, Takemura, Yoshinari, Ohara, Shunji, Aoki, Yoshito
• Primary Examiner(s): PSITOS, ARISTOTELIS
• Application Number:
  US09/570,735
• Time in Patent Office: 893 Days
• Field of Search: 369/275.3, 369/275.4, 369/44.11
• US Class Current: 369/275.3
• CPC Class Codes: G11B 20/1252 for discontinuous data, e.g. digital information signals, computer programme data
• CPC Class Codes: G11B 2020/1232 sector, i.e. the minimal addressable physical data unit
• CPC Class Codes: G11B 2020/1239 the track being a pregroove, e.g. the wobbled track of a recordable optical disc
• CPC Class Codes: G11B 2020/1267 Address data
• CPC Class Codes: G11B 2020/1274 stored in pre-pits, i.e. in embossed pits, ROM marks or prepits
• 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 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/216 Rewritable discs
• CPC Class Codes: G11B 2220/2537 Optical discs
• CPC Class Codes: G11B 27/19 by using information detectable on the record carrier
• CPC Class Codes: G11B 27/24 by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
• CPC Class Codes: G11B 27/3027 used signal is digitally coded
• CPC Class Codes: G11B 7/00718 Groove and land recording, i.e. user data recorded both in the grooves and on the lands
• CPC Class Codes: G11B 7/00745 Sectoring or header formats within a track formats in general G11B20/12
• CPC Class Codes: G11B 7/0901 for track following only G11B7/0925, G11B7/094, G11B7/0941, G11B7/0943, G11B7/0945, G11B7/0946, G11B7/0948 take precedence
• CPC Class Codes: G11B 7/0938 servo format, e.g. guide tracks, pilot signals

Abstract

Address groups are composed of two of address blocks 16, 17, 18, and 19, where the address blocks 16, 17, 18, and 19 are disposed in a sector address region 5 and include identifiable information of address numbers 13 and overlapping sequential numbers 14. The address groups are disposed so that each group is alternately shifted from a track center 2 toward the inner periphery side or the outer periphery side, by a width substantially equal to half the track pitch, along the radius direction.

Claims

1. An optical disk comprising a land track and a groove track, wherein each of the land track and the groove track includes a plurality of sectors, each of the plurality of sectors includes a sector address region and a data region, and the sector address region includes a plurality of address blocks,

further wherein the sector address region includes a first address block group including a plurality of address blocks immediately adjacent to each other in a circumferential direction and a second address block group including a plurality of address blocks immediately adjacent to each other in the circumferential direction,

each of the plurality of address blocks included in the first address block group includes an address number and an ID number,

each of the plurality of address blocks included in the second address block group includes an address number and an ID number,

the first address block group and the second address block group are disposed so as to be shifted oppositely in a radial direction with respect to a track central axis by substantially half of a track pitch, and

non-pit data is located at the beginning and the end of each of the plurality of address blocks included in the first address block group and the second address block group.

2. An optical disk recording/reproduction apparatus for an optical comprising a land track and a groove track, wherein each of the land track and the groove track includes a plurality of sectors, each of the plurality of sectors includes a sector address region and a data region, and the sector address region includes a plurality of address blocks,

further wherein the sector address region includes a first address block group including a plurality of address blocks immediately adjacent to each other in a circumferential direction and a second address block group including a plurality of address blocks immediately adjacent to each other in the circumferential direction,

each of the plurality of address blocks included in the first address block group includes an address number and an ID number,

each of the plurality of address blocks included in the second address block group includes an address number and an ID number,

the first address block group and the second address block group are disposed so as to be shifted oppositely in a radial direction with respect to a track central axis by substantially half of a track pitch, and

non-pit data is located at the beginning and the end of each of the plurality of address blocks included in the first address block group and the second address block group,

the apparatus comprising:

an optical head for radiating a light beam on the optical disk and receiving reflected light from the optical disk to output a reproduced signal,

an address signal reproduction section for reading the address number and the ID number from each of the plurality of address blocks included in the first address block group and the second address block group based on the reproduced signal; and

an address correction section for correcting the address number read from each of the plurality of address blocks included in the first address block group and the second address block group in accordance with the ID number read from each of the plurality of address blocks included in the first address block group and the second address block group.

3. An optical disk comprising a land track and a groove track, wherein each of the land track and the groove track includes a plurality of sectors, each of the plurality of sectors includes a sector address region and a data region, and the sector address region includes a plurality of address blocks,

further wherein the sector address region includes a first address block group including a plurality of address blocks immediately adjacent to each other in a circumferential direction and a second address block group including a plurality of address blocks immediately adjacent to each other in the circumferential direction,

each of the plurality of address blocks included in the first address block group includes an address number and an ID number,

each of the plurality of address blocks included in the second address block group includes an address number and an ID number,

the first address block group and the second address block group are disposed so as to be shifted oppositely in a radial direction with respect to a track central axis by substantially half of a track pitch, and

non-pit data is located at the beginning and the end of the first address block group and non-pit data is located at the beginning and the end of the second address block group.

4. An optical disk recording/reproduction apparatus for an optical disk comprising a land track and a groove track, wherein each of the land track and the groove track includes a plurality of sectors, each of the plurality of sectors includes a sector address region and a data region, and the sector address region includes a plurality of address blocks,

further wherein the sector address region includes a first address block group including a plurality of address blocks immediately adjacent to each other in a circumferential direction and a second address block group including a plurality of address blocks immediately adjacent to each other in the circumferential direction,

each of the plurality of address blocks included in the first address block group includes an address number and an ID number,

each of the plurality of address blocks included in the second address block group includes an address number and an ID number,

the first address block group and the second address block group are disposed so as to be shifted oppositely in a radial direction with respect to a track central axis by substantially half of a track pitch, and

non-pit data is located at the beginning and the end of the first address block group and non-pit data is located at the beginning and the end of the second address block group,

the apparatus comprising:

an optical head for radiating a light beam on the optical disk and receiving reflected light from the optical disk to output a reproduced signal,

an address signal reproduction section for reading the address number and the ID number from each of the plurality of address blocks included in the first address block group and the second address block group based on the reproduced signal; and

an address correction section for correcting the address number read from each of the plurality of address blocks included in the first address block group and the second address block group in accordance with the ID number read from each of the plurality of address blocks included in the first address block group and the second address block group.