DE69317163T2 - Verfahren zur Wiedergabe eines Signals, das auf ein optisches Aufzeichnungsmedium aufgezeichnet ist - Google Patents
Verfahren zur Wiedergabe eines Signals, das auf ein optisches Aufzeichnungsmedium aufgezeichnet istInfo
- Publication number
- DE69317163T2 DE69317163T2 DE69317163T DE69317163T DE69317163T2 DE 69317163 T2 DE69317163 T2 DE 69317163T2 DE 69317163 T DE69317163 T DE 69317163T DE 69317163 T DE69317163 T DE 69317163T DE 69317163 T2 DE69317163 T2 DE 69317163T2
- Authority
- DE
- Germany
- Prior art keywords
- reproducing
- recording medium
- optical recording
- signal recorded
- tightest
- 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
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
-
- 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
- G11B7/005—Reproducing
-
- 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
- G11B11/10515—Reproducing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04165065A JP3134508B2 (ja) | 1992-06-23 | 1992-06-23 | 光記録媒体の信号検出方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69317163D1 DE69317163D1 (de) | 1998-04-09 |
DE69317163T2 true DE69317163T2 (de) | 1998-10-01 |
Family
ID=15805201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69317163T Expired - Fee Related DE69317163T2 (de) | 1992-06-23 | 1993-06-22 | Verfahren zur Wiedergabe eines Signals, das auf ein optisches Aufzeichnungsmedium aufgezeichnet ist |
Country Status (7)
Country | Link |
---|---|
US (1) | US5400318A (de) |
EP (1) | EP0575963B1 (de) |
JP (1) | JP3134508B2 (de) |
KR (1) | KR940006108A (de) |
AT (1) | ATE163791T1 (de) |
CA (1) | CA2097576C (de) |
DE (1) | DE69317163T2 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3147255B2 (ja) * | 1992-10-13 | 2001-03-19 | ソニー株式会社 | データ記録方法、データ記録装置およびデータ記録媒体 |
JPH06282861A (ja) * | 1992-12-22 | 1994-10-07 | Philips Electron Nv | フォーカス最適化方法及び装置 |
US5590097A (en) * | 1993-12-15 | 1996-12-31 | Hitachi Maxell, Ltd. | Magnetooptic recording medium |
US5894468A (en) * | 1994-05-06 | 1999-04-13 | Discovision Associates | Data recovery with differentiation and partial integration stages to eliminate noises and DC offset level |
US5790495A (en) | 1994-05-06 | 1998-08-04 | Discovision Associates | Data generator assembly for retrieving stored data by comparing threshold signal with preprocessed signal having DC component |
US5654953A (en) * | 1994-09-21 | 1997-08-05 | Kabushiki Kaisha Toshiba | Optical disk and method of manufacturing the same |
US5761171A (en) * | 1994-10-24 | 1998-06-02 | Sony Corporation | Generating data detecting threshold levels from reference patterns recorded in an optical disk, such as a magneto-optical disk |
US5696756A (en) * | 1995-04-14 | 1997-12-09 | Kabushiki Kaishia Toshiba | Optical disk having an evaluation pattern for evaluating the optical disk |
JP5257261B2 (ja) * | 2009-06-18 | 2013-08-07 | ソニー株式会社 | 光情報再生装置及び光情報再生方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2641421B2 (ja) * | 1985-03-22 | 1997-08-13 | 株式会社日立製作所 | 光学的検出方法、光学的情報再生装置、及び信号検出回路 |
JP2810035B2 (ja) * | 1986-08-22 | 1998-10-15 | 株式会社日立製作所 | 光学的記録再生方法 |
JP2613199B2 (ja) * | 1986-12-10 | 1997-05-21 | 株式会社日立製作所 | 情報再生方法および光ディスク |
JP2619381B2 (ja) * | 1987-03-20 | 1997-06-11 | 株式会社日立製作所 | 光学的情報再生装置 |
US4961182A (en) * | 1987-07-01 | 1990-10-02 | Hitachi, Ltd. | Information retrieving system with level clamping |
JP2845915B2 (ja) * | 1989-01-06 | 1999-01-13 | 株式会社日立製作所 | 情報再生方法および情報再生装置 |
JP2852792B2 (ja) * | 1990-07-05 | 1999-02-03 | 三菱電機株式会社 | 光ディスク装置 |
-
1992
- 1992-06-23 JP JP04165065A patent/JP3134508B2/ja not_active Expired - Fee Related
-
1993
- 1993-06-02 CA CA002097576A patent/CA2097576C/en not_active Expired - Fee Related
- 1993-06-02 KR KR1019930009842A patent/KR940006108A/ko not_active Application Discontinuation
- 1993-06-22 US US08/079,555 patent/US5400318A/en not_active Expired - Lifetime
- 1993-06-22 DE DE69317163T patent/DE69317163T2/de not_active Expired - Fee Related
- 1993-06-22 AT AT93109959T patent/ATE163791T1/de not_active IP Right Cessation
- 1993-06-22 EP EP93109959A patent/EP0575963B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR940006108A (ko) | 1994-03-23 |
JP3134508B2 (ja) | 2001-02-13 |
EP0575963A3 (en) | 1994-05-11 |
EP0575963B1 (de) | 1998-03-04 |
DE69317163D1 (de) | 1998-04-09 |
CA2097576C (en) | 2002-11-12 |
JPH064871A (ja) | 1994-01-14 |
CA2097576A1 (en) | 1993-12-24 |
US5400318A (en) | 1995-03-21 |
EP0575963A2 (de) | 1993-12-29 |
ATE163791T1 (de) | 1998-03-15 |
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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 |