DE69701766D1 - Optisches Aufzeichnungsmedium - Google Patents
Optisches AufzeichnungsmediumInfo
- Publication number
- DE69701766D1 DE69701766D1 DE69701766T DE69701766T DE69701766D1 DE 69701766 D1 DE69701766 D1 DE 69701766D1 DE 69701766 T DE69701766 T DE 69701766T DE 69701766 T DE69701766 T DE 69701766T DE 69701766 D1 DE69701766 D1 DE 69701766D1
- Authority
- DE
- Germany
- Prior art keywords
- recording medium
- optical recording
- optical
- medium
- recording
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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
- 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
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals
-
- 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
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
- G11B11/10578—Servo format, e.g. prepits, guide tracks, pilot signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8125151A JPH09306034A (ja) | 1996-05-20 | 1996-05-20 | 光学式記録媒体 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69701766D1 true DE69701766D1 (de) | 2000-05-31 |
DE69701766T2 DE69701766T2 (de) | 2000-08-17 |
Family
ID=14903141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69701766T Expired - Fee Related DE69701766T2 (de) | 1996-05-20 | 1997-05-20 | Optisches Aufzeichnungsmedium |
Country Status (5)
Country | Link |
---|---|
US (1) | US5838654A (de) |
EP (1) | EP0809240B1 (de) |
JP (1) | JPH09306034A (de) |
KR (1) | KR970076735A (de) |
DE (1) | DE69701766T2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000048409A (ja) * | 1998-07-27 | 2000-02-18 | Sony Corp | 光記録媒体、光記録媒体製造用原盤及び光記録再生装置 |
BR0008208A (pt) | 1999-02-12 | 2002-02-19 | Gen Electric | Meios de armazenamento de dados |
JP2001006220A (ja) * | 1999-06-22 | 2001-01-12 | Sharp Corp | 光記録媒体 |
KR20010007585A (ko) * | 1999-06-30 | 2001-01-26 | 마찌다 가쯔히꼬 | 상이한 깊이로 피트들이 형성되어 있는 광 디스크, 이 광디스크를 재생하기 위한 광 디스크 디바이스, 및 재생 방법 |
AU2002219606A1 (en) * | 2002-01-11 | 2003-07-30 | Fujitsu Limited | Optical information recording medium |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0380443A (ja) * | 1989-08-22 | 1991-04-05 | Sony Corp | 光デイスク |
US5204852A (en) * | 1990-02-17 | 1993-04-20 | Victor Company Of Japan, Ltd. | Optical disc-like recoding medium and manufacturing method thereof |
JP2878574B2 (ja) * | 1993-12-01 | 1999-04-05 | シャープ株式会社 | 光ディスク及びその再生方法 |
US5459712A (en) * | 1994-01-19 | 1995-10-17 | Kabushiki Kaisha Toshiba | Optical disk and optical disk apparatus where information is recorded having a specific track pitch and as a plurality of pit trains, each including a plurality of substantially trapezoidal pits |
US5477527A (en) * | 1994-02-02 | 1995-12-19 | Sanyo Electric Co., Ltd. | High density optical disc and optical disc player |
JPH08147876A (ja) * | 1994-11-14 | 1996-06-07 | Sony Corp | 記録再生装置及び記録再生方法 |
CN1143287C (zh) * | 1995-12-28 | 2004-03-24 | 索尼株式会社 | 光盘 |
-
1996
- 1996-05-20 JP JP8125151A patent/JPH09306034A/ja active Pending
-
1997
- 1997-05-05 US US08/851,477 patent/US5838654A/en not_active Expired - Fee Related
- 1997-05-20 DE DE69701766T patent/DE69701766T2/de not_active Expired - Fee Related
- 1997-05-20 EP EP97108165A patent/EP0809240B1/de not_active Expired - Lifetime
- 1997-05-20 KR KR1019970019538A patent/KR970076735A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE69701766T2 (de) | 2000-08-17 |
US5838654A (en) | 1998-11-17 |
EP0809240B1 (de) | 2000-04-26 |
KR970076735A (ko) | 1997-12-12 |
EP0809240A2 (de) | 1997-11-26 |
JPH09306034A (ja) | 1997-11-28 |
EP0809240A3 (de) | 1997-12-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |