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1. WO1998015951 - OPTICAL DISC, OPTICAL DISC DEVICE, AND METHOD FOR RECORDING AN OPTICAL DISC

Publication Number WO/1998/015951
Publication Date 16.04.1998
International Application No. PCT/JP1997/003559
International Filing Date 06.10.1997
Chapter 2 Demand Filed 07.04.1998
IPC
G11B 7/0045 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
0045Recording
G11B 7/006 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
006Overwriting
G11B 7/007 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
007Arrangement of the information on the record carrier, e.g. form of tracks
G11B 11/105 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
11Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups G11B3/-G11B7/212; Record carriers therefor
10using recording by magnetisation or demagnetisation
105using a beam of light or a magnetic field for recording and a beam of light for reproducing, e.g. light-induced thermo-magnetic recording, Kerr effect reproducing
G11B 20/12 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
12Formatting, e.g. arrangement of data block or words on the record carriers
G11B 27/19 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
27Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
10Indexing; Addressing; Timing or synchronising; Measuring tape travel
19by using information detectable on the record carrier
CPC
G11B 11/10521
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
11Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
10using recording by magnetic means ; or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
105using a beam of light or a magnetic field for recording ; by change of magnetisation; and a beam of light for reproducing, ; i.e. magneto-optical,; e.g. light-induced thermo-magnetic recording, ; spin magnetisation recording,; Kerr ; or Faraday; effect reproducing
10502characterised by the transducing operation to be executed
10517Overwriting or erasing
10519Direct overwriting, i.e. performing erasing and recording using the same transducing means
10521using a single light spot
G11B 20/12
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
12Formatting, e.g. arrangement of data block or words on the record carriers
G11B 20/1217
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
12Formatting, e.g. arrangement of data block or words on the record carriers
1217on discs
G11B 20/1251
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
12Formatting, e.g. arrangement of data block or words on the record carriers
1217on discs
1251for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
G11B 2020/1232
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
12Formatting, e.g. arrangement of data block or words on the record carriers
1217on discs
1218wherein the formatting concerns a specific area of the disc
1232sector, i.e. the minimal addressable physical data unit
G11B 2020/1277
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
12Formatting, e.g. arrangement of data block or words on the record carriers
1264wherein the formatting concerns a specific kind of data
1265Control data, system data or management information, i.e. data used to access or process user data
1277for managing gaps between two recordings, e.g. control data in linking areas, run-in or run-out fields, guard or buffer zones
Applicants
  • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. [JP]/[JP]
Inventors
  • ISHIDA, Takashi
  • KUBOTA, Shinji
  • SHOJI, Mamoru
  • ISHIDA, Shinji
Agents
  • TAKIMOTO, Tomoyuki
  • GRUNECKER, A.
Priority Data
8/26587607.10.1996JP
8/26958011.10.1996JP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL DISC, OPTICAL DISC DEVICE, AND METHOD FOR RECORDING AN OPTICAL DISC
(FR) DISQUE OPTIQUE, DISPOSITIF A DISQUE OPTIQUE ET PROCEDE D'ENREGISTREMENT SUR UN DISQUE OPTIQUE
Abstract
(EN)
In an optical disc, a sector is sequentially formed with a first gap field, a first guard data recording field, a data recording field composed of synchronous signal and user data, a second guard data recording field, and a second gap field, wherein the length of the first and second gap fields, and the length of the first and second guard data recording fields is changed randomly in every recording, and the changing amount of the first and second gap fields is set smaller than the changing amount of the first and second guard data recording fields, thereby suppressing optical disc medium deterioration in every sector and every mark resulting from repeated recording.
(FR)
Dans un disque optique, on forme séquentiellement un premier champ de vide, un premier champ d'enregistrement de données de garde, un champ d'enregistrement de données composé de signaux synchrones et de données utilisateur, un second champ d'enregistrement de données de garde et un second champ de vide. La longueur des premier et second champs de vide, et celle des premier et second champs d'enregistrement de données de garde change de manière aléatoire dans tous les enregistrements, et l'ampleur du changement des premier et second champs de vide est inférieure à celle des premier et second champs d'enregistrement de données de garde, ce qui permet de supprimer la détérioration du support à disque optique dans tous les secteurs et toute marque résultant d'un enregistrement répété.
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