DE69837731D1 - Optische Platte - Google Patents
Optische PlatteInfo
- Publication number
- DE69837731D1 DE69837731D1 DE69837731T DE69837731T DE69837731D1 DE 69837731 D1 DE69837731 D1 DE 69837731D1 DE 69837731 T DE69837731 T DE 69837731T DE 69837731 T DE69837731 T DE 69837731T DE 69837731 D1 DE69837731 D1 DE 69837731D1
- Authority
- DE
- Germany
- Prior art keywords
- optical plate
- optical
- plate
- 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 - Lifetime
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
- G11B7/24073—Tracks
- G11B7/24076—Cross sectional shape in the radial direction of a disc, e.g. asymmetrical cross sectional shape
-
- 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
- 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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00718—Groove and land recording, i.e. user data recorded both in the grooves and on the lands
-
- 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
- G11B7/24073—Tracks
- G11B7/24079—Width or depth
-
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6362897 | 1997-03-17 | ||
JP9063628A JPH10261242A (ja) | 1997-03-17 | 1997-03-17 | 光ディスク |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69837731D1 true DE69837731D1 (de) | 2007-06-21 |
DE69837731T2 DE69837731T2 (de) | 2008-01-10 |
Family
ID=13234809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69837731T Expired - Lifetime DE69837731T2 (de) | 1997-03-17 | 1998-03-12 | Optische Platte |
Country Status (5)
Country | Link |
---|---|
US (1) | US6400677B2 (de) |
EP (1) | EP0866447B1 (de) |
JP (1) | JPH10261242A (de) |
KR (1) | KR100551145B1 (de) |
DE (1) | DE69837731T2 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6264848B1 (en) * | 1998-04-09 | 2001-07-24 | Seagate Technology Llc | Method for providing track position and identification information for data storage devices |
JP2000030257A (ja) * | 1998-07-08 | 2000-01-28 | Taiyo Yuden Co Ltd | 光情報媒体とその記録方法 |
SG91255A1 (en) * | 1999-02-19 | 2002-09-17 | Taiyo Yuden Kk | Optical information medium and recording method thereof |
KR100657246B1 (ko) * | 1999-11-24 | 2006-12-19 | 삼성전자주식회사 | 광디스크 |
JP2002050090A (ja) * | 2000-05-25 | 2002-02-15 | Fujitsu Ltd | 光記録媒体 |
JP2002092962A (ja) * | 2000-09-20 | 2002-03-29 | Nec Corp | 光学情報記録媒体 |
JP4244527B2 (ja) * | 2001-04-06 | 2009-03-25 | ソニー株式会社 | 光ディスクの製造方法 |
JPWO2002089129A1 (ja) * | 2001-04-24 | 2004-08-19 | ソニー株式会社 | 光記録媒体、光記録媒体の製造方法、光記録媒体の光記録方法と光再生方法 |
JP2004327007A (ja) * | 2003-04-08 | 2004-11-18 | Nec Corp | 光学的情報記録媒体および光学的情報記録再生装置 |
JP2005293773A (ja) * | 2004-04-02 | 2005-10-20 | Toshiba Corp | 追記型情報記録媒体 |
EP2327074A4 (de) * | 2008-09-12 | 2016-12-21 | Univ Brigham Young | Datenspeichermedium mit carbon- und metallschichten |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5553051A (en) * | 1987-09-04 | 1996-09-03 | Hitachi, Ltd. | Increased intensity optical recording medium with adjacent grooves of different optical depth and a method and apparatus for reproducing the same |
US5414652A (en) * | 1993-08-27 | 1995-05-09 | Sharp Kabushiki Kaisha | Magneto-optical memory element |
JPH07320288A (ja) * | 1994-05-27 | 1995-12-08 | Sharp Corp | 記録媒体および情報記録再生装置 |
JP2743866B2 (ja) * | 1994-08-29 | 1998-04-22 | 日本電気株式会社 | 光ディスク媒体および光ディスク記録・再生方法 |
CN1149558C (zh) * | 1995-03-28 | 2004-05-12 | 东丽株式会社 | 光记录媒体及对光记录媒体的记录方法 |
US5694379A (en) * | 1995-08-29 | 1997-12-02 | Sony Corporation | Magneto-optical recording medium and recording apparatus therefor |
EP0777216A3 (de) * | 1995-12-05 | 1998-12-23 | Nikon Corporation | Optische Platte mit hoher Speicherdichte, und Aufzeichnungsverfahren mit hoher Dichte |
JPH1064120A (ja) * | 1996-08-20 | 1998-03-06 | Toshiba Corp | ランド・グルーブ記録用情報記録媒体 |
-
1997
- 1997-03-17 JP JP9063628A patent/JPH10261242A/ja active Pending
-
1998
- 1998-03-12 DE DE69837731T patent/DE69837731T2/de not_active Expired - Lifetime
- 1998-03-12 EP EP98104498A patent/EP0866447B1/de not_active Expired - Lifetime
- 1998-03-16 KR KR1019980008719A patent/KR100551145B1/ko not_active IP Right Cessation
- 1998-03-16 US US09/039,222 patent/US6400677B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0866447B1 (de) | 2007-05-09 |
US20010012264A1 (en) | 2001-08-09 |
US6400677B2 (en) | 2002-06-04 |
KR19980080295A (ko) | 1998-11-25 |
EP0866447A2 (de) | 1998-09-23 |
DE69837731T2 (de) | 2008-01-10 |
KR100551145B1 (ko) | 2006-04-21 |
JPH10261242A (ja) | 1998-09-29 |
EP0866447A3 (de) | 1998-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licences declared (paragraph 23) |