SG49939A1 - Method and device for recording/reading information on a movable optical or magneto-optical medium - Google Patents
Method and device for recording/reading information on a movable optical or magneto-optical mediumInfo
- Publication number
- SG49939A1 SG49939A1 SG1996009593A SG1996009593A SG49939A1 SG 49939 A1 SG49939 A1 SG 49939A1 SG 1996009593 A SG1996009593 A SG 1996009593A SG 1996009593 A SG1996009593 A SG 1996009593A SG 49939 A1 SG49939 A1 SG 49939A1
- Authority
- SG
- Singapore
- Prior art keywords
- optical
- magneto
- recording
- reading information
- optical medium
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24085—Pits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording 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
- G11B11/10—Recording 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 using 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
- G11B11/105—Recording 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 using 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 using 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 thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording 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 using 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 using 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 thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10528—Shaping of magnetic domains, e.g. form, dimensions
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9202498A FR2688332B1 (fr) | 1992-03-03 | 1992-03-03 | Procede et dispositif d'enregistrement lecture d'information sur un support optique ou magneto-optique mobile. |
Publications (1)
Publication Number | Publication Date |
---|---|
SG49939A1 true SG49939A1 (en) | 1998-06-15 |
Family
ID=9427269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG1996009593A SG49939A1 (en) | 1992-03-03 | 1993-03-02 | Method and device for recording/reading information on a movable optical or magneto-optical medium |
Country Status (9)
Country | Link |
---|---|
US (1) | US5475672A (de) |
EP (1) | EP0609398B1 (de) |
JP (1) | JP3284549B2 (de) |
DE (1) | DE69320937T2 (de) |
ES (1) | ES2121995T3 (de) |
FR (1) | FR2688332B1 (de) |
HK (1) | HK1010766A1 (de) |
SG (1) | SG49939A1 (de) |
WO (1) | WO1993018514A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6487151B1 (en) | 1994-12-20 | 2002-11-26 | Matsushita Electric Industrial Co. Ltd. | Optical information recording and reproducing system with overwrite capability and recording medium for use therewith |
FR2731808B1 (fr) * | 1995-03-14 | 1997-04-11 | Thomson Csf | Systeme de reglage de focalisation optique |
US6088323A (en) * | 1996-07-16 | 2000-07-11 | Sony Corporation | Optical disk, optical disk device, and optical disk recording method |
JP3861269B2 (ja) * | 1996-07-16 | 2006-12-20 | ソニー株式会社 | 光ディスク装置、光ディスクの記録方法、光ディスク及び光ディスクの製造方法 |
JP4717208B2 (ja) * | 1998-02-27 | 2011-07-06 | ダグ カーソン アンド アソシエーツ,インク. | 光ディスクマスタ作成プロセスにおけるピットおよびランド遷移ロケーションの個別調整方法、およびそのための最適化回路 |
WO1999063539A1 (en) | 1998-06-02 | 1999-12-09 | Seagate Technology, Inc. | Efficient linearization of saturation channels |
WO1999063530A1 (en) * | 1998-06-02 | 1999-12-09 | Seagate Technology, Inc. | A magneto-optical recording system employing linear recording and playback channels |
US6687205B1 (en) | 1998-06-09 | 2004-02-03 | Seagate Technology Llc | Parallel coded spread spectrum communication for data storage |
FR2787232B1 (fr) | 1998-12-15 | 2001-02-23 | Thomson Csf | Disque d'enregistrement optique anti-piratage et procede de lecture d'un tel disque |
US6542443B1 (en) * | 1999-06-02 | 2003-04-01 | Seagate Technology Llc | Efficient linearization of saturation channels |
FR2805071B1 (fr) | 2000-02-11 | 2002-05-03 | Moulage Plastique De L Ouest | Disque optique protege contre la copie et procede de protection pour un tel disque |
US6792051B1 (en) * | 2000-07-25 | 2004-09-14 | Thomson Licensing S.A. | In-band-on-channel broadcast system for digital data |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4873680A (en) * | 1987-03-13 | 1989-10-10 | Laserdrive Ltd. | Apparatus and method for detecting and compensating for pit extension in an optical disk recording system |
NL8702904A (nl) * | 1987-12-03 | 1989-07-03 | Philips Nv | Werkwijze en inrichting voor het optekenen van informatie op een registratiedrager, alsmede een inrichting voor het lezen van de opgetekende informatie. |
JP2785370B2 (ja) * | 1989-08-25 | 1998-08-13 | ソニー株式会社 | 光記録装置 |
JPH03171453A (ja) * | 1989-11-29 | 1991-07-24 | Sony Corp | 光磁気信号再生方法 |
FR2664420A1 (fr) * | 1990-07-05 | 1992-01-10 | Thomson Csf | Enregistreur-lecteur optique ou magneto-optique. |
JPH04212723A (ja) * | 1990-07-31 | 1992-08-04 | Toshiba Corp | 情報記録再生装置 |
-
1992
- 1992-03-03 FR FR9202498A patent/FR2688332B1/fr not_active Expired - Fee Related
-
1993
- 1993-03-02 ES ES93905444T patent/ES2121995T3/es not_active Expired - Lifetime
- 1993-03-02 DE DE69320937T patent/DE69320937T2/de not_active Expired - Fee Related
- 1993-03-02 JP JP51538193A patent/JP3284549B2/ja not_active Expired - Fee Related
- 1993-03-02 US US08/140,034 patent/US5475672A/en not_active Expired - Lifetime
- 1993-03-02 EP EP93905444A patent/EP0609398B1/de not_active Expired - Lifetime
- 1993-03-02 SG SG1996009593A patent/SG49939A1/en unknown
- 1993-03-02 WO PCT/FR1993/000208 patent/WO1993018514A1/fr active IP Right Grant
-
1998
- 1998-10-30 HK HK98111646A patent/HK1010766A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ES2121995T3 (es) | 1998-12-16 |
JP3284549B2 (ja) | 2002-05-20 |
JPH06507513A (ja) | 1994-08-25 |
DE69320937T2 (de) | 1999-05-12 |
EP0609398A1 (de) | 1994-08-10 |
HK1010766A1 (en) | 1999-06-25 |
FR2688332B1 (fr) | 1995-12-01 |
DE69320937D1 (de) | 1998-10-15 |
FR2688332A1 (fr) | 1993-09-10 |
US5475672A (en) | 1995-12-12 |
EP0609398B1 (de) | 1998-09-09 |
WO1993018514A1 (fr) | 1993-09-16 |
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