DE3370393D1 - Disc playback apparatus - Google Patents
Disc playback apparatusInfo
- Publication number
- DE3370393D1 DE3370393D1 DE8383108495T DE3370393T DE3370393D1 DE 3370393 D1 DE3370393 D1 DE 3370393D1 DE 8383108495 T DE8383108495 T DE 8383108495T DE 3370393 T DE3370393 T DE 3370393T DE 3370393 D1 DE3370393 D1 DE 3370393D1
- Authority
- DE
- Germany
- Prior art keywords
- sub
- level
- playback apparatus
- pickup
- disc playback
- 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
Links
Classifications
-
- 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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
-
- 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
- G11B7/0948—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 specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
-
- 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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1816—Testing
- G11B2020/1823—Testing wherein a flag is set when errors are detected or qualified
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57149311A JPS5940326A (ja) | 1982-08-30 | 1982-08-30 | デイスク再生装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3370393D1 true DE3370393D1 (en) | 1987-04-23 |
Family
ID=15472347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8383108495T Expired DE3370393D1 (en) | 1982-08-30 | 1983-08-29 | Disc playback apparatus |
Country Status (6)
Country | Link |
---|---|
US (1) | US4682314A (de) |
EP (1) | EP0102607B1 (de) |
JP (1) | JPS5940326A (de) |
AT (1) | ATE26035T1 (de) |
CA (1) | CA1213046A (de) |
DE (1) | DE3370393D1 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0816982B2 (ja) * | 1984-09-28 | 1996-02-21 | 株式会社東芝 | 光学式記録再生装置におけるドロツプアウトコントロ−ル装置 |
JP2510411B2 (ja) * | 1984-11-13 | 1996-06-26 | パイオニア株式会社 | フオ−カスサ−ボ装置 |
JPH0619840B2 (ja) * | 1985-02-05 | 1994-03-16 | 富士通テン株式会社 | トラツキング制御回路 |
US4740940A (en) * | 1985-03-11 | 1988-04-26 | Matsushita Electric Industrial Co., Ltd. | Optical information read apparatus |
JP2796285B2 (ja) * | 1986-07-11 | 1998-09-10 | 株式会社日立製作所 | トラッキング方法及びそれを用いた光ディスク装置 |
JPH0626025B2 (ja) * | 1986-09-09 | 1994-04-06 | ティアツク株式会社 | デイスク傾斜度検出装置 |
USRE33506E (en) * | 1986-09-09 | 1990-12-25 | Teac Corporation | Disc inclination detecting apparatus |
JPS6486385A (en) * | 1987-05-14 | 1989-03-31 | Akai Electric | Track jump preventing device for cd player |
JPS6414772A (en) * | 1987-07-08 | 1989-01-18 | Pioneer Electronic Corp | Rf signal processing circuit |
JP2572842B2 (ja) * | 1989-05-10 | 1997-01-16 | パイオニア株式会社 | 光学的読取り信号のクロストーク量検出装置 |
DE4103974A1 (de) * | 1991-02-09 | 1992-08-13 | Thomson Brandt Gmbh | Optisches aufzeichnungs- und/oder wiedergabegeraet |
JPH06251371A (ja) * | 1993-02-26 | 1994-09-09 | Sony Corp | ディスク状媒体の欠陥位置指示信号記録装置 |
US5495156A (en) * | 1994-06-24 | 1996-02-27 | Quantum Corporation | Actuator retraction circuit |
JP3688484B2 (ja) | 1998-11-20 | 2005-08-31 | パイオニア株式会社 | 光学式記録媒体のドライブ装置 |
JP2001229617A (ja) | 2000-02-16 | 2001-08-24 | Mitsubishi Electric Corp | 光ディスク用信号検出回路 |
JP2001307346A (ja) * | 2000-04-24 | 2001-11-02 | Pioneer Electronic Corp | 光学式ディスクプレーヤのサーボ制御装置 |
JP2001307347A (ja) * | 2000-04-24 | 2001-11-02 | Pioneer Electronic Corp | 光学式ディスクプレーヤのサーボ制御装置及びその方法 |
DE10048920A1 (de) * | 2000-10-04 | 2002-04-11 | Bosch Gmbh Robert | Verfahren zur Regelung der Nachführung einer Abtastvorrichtung und Laufwerk dafür |
KR100382733B1 (ko) * | 2001-02-08 | 2003-05-09 | 삼성전자주식회사 | 광디스크 재생 시스템에 이용되는 피킹 방지 자동 이득조절기 및 피킹 방지방법 |
WO2003098613A1 (en) * | 2002-05-21 | 2003-11-27 | Koninklijke Philips Electronics N.V. | Optical disk system with improved playability |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7402014A (nl) * | 1974-02-14 | 1975-08-18 | Philips Nv | Inrichting voor het detekteren van signaaluit- vallen. |
IN144074B (de) * | 1974-06-06 | 1978-03-18 | Rca Corp | |
AR207776A1 (es) * | 1974-06-06 | 1976-10-29 | Rca Corp | Disposicion para reproducir una grabacion de imagenes de color sucesivas |
NL7503049A (nl) * | 1975-03-14 | 1976-09-16 | Philips Corp | Inrichting voor het kompenseren van signaal- uitvallen in een hoekgemoduleerd signaal. |
JPS53114608A (en) * | 1977-03-16 | 1978-10-06 | Matsushita Electric Ind Co Ltd | Defect detector |
JPS5585028A (en) * | 1978-12-22 | 1980-06-26 | Hitachi Ltd | Mark detecting signal amplifier |
JPS5746357A (en) * | 1980-09-04 | 1982-03-16 | Matsushita Electric Ind Co Ltd | Tracking servo circuit |
US4362996A (en) * | 1980-11-10 | 1982-12-07 | Hewlett-Packard Company | Method and means for an accurate wideband peak detector |
JPS5817549A (ja) * | 1981-07-22 | 1983-02-01 | Hitachi Ltd | 光学的トラツク追従装置 |
JPS58150145A (ja) * | 1982-03-03 | 1983-09-06 | Toshiba Corp | 光学式デジタルデイスクプレ−ヤのトラツキング制御回路 |
JPS58212632A (ja) * | 1982-06-04 | 1983-12-10 | Hitachi Ltd | サ−ボ回路の利得制御装置 |
JPS58212627A (ja) * | 1982-06-04 | 1983-12-10 | Hitachi Ltd | 鏡面検出装置 |
-
1982
- 1982-08-30 JP JP57149311A patent/JPS5940326A/ja active Granted
-
1983
- 1983-08-26 US US06/526,782 patent/US4682314A/en not_active Expired - Lifetime
- 1983-08-29 CA CA000435554A patent/CA1213046A/en not_active Expired
- 1983-08-29 AT AT83108495T patent/ATE26035T1/de not_active IP Right Cessation
- 1983-08-29 DE DE8383108495T patent/DE3370393D1/de not_active Expired
- 1983-08-29 EP EP83108495A patent/EP0102607B1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPH0234091B2 (de) | 1990-08-01 |
ATE26035T1 (de) | 1987-04-15 |
EP0102607B1 (de) | 1987-03-18 |
EP0102607A1 (de) | 1984-03-14 |
US4682314A (en) | 1987-07-21 |
CA1213046A (en) | 1986-10-21 |
JPS5940326A (ja) | 1984-03-06 |
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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 |