HK41891A - Tracking servo apparatus - Google Patents
Tracking servo apparatusInfo
- Publication number
- HK41891A HK41891A HK418/91A HK41891A HK41891A HK 41891 A HK41891 A HK 41891A HK 418/91 A HK418/91 A HK 418/91A HK 41891 A HK41891 A HK 41891A HK 41891 A HK41891 A HK 41891A
- Authority
- HK
- Hong Kong
- Prior art keywords
- tracking servo
- servo apparatus
- tracking
- servo
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
- G11B21/083—Access to indexed tracks or parts of continuous track on discs
- G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
- G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
-
- 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
- G11B7/0901—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 for track following only
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62012716A JP2696822B2 (ja) | 1987-01-22 | 1987-01-22 | トラツキングサーボ装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HK41891A true HK41891A (en) | 1991-06-07 |
Family
ID=11813154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK418/91A HK41891A (en) | 1987-01-22 | 1991-05-30 | Tracking servo apparatus |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4853918A (fr) |
| JP (1) | JP2696822B2 (fr) |
| KR (1) | KR960007230B1 (fr) |
| DE (1) | DE3801696C2 (fr) |
| FR (1) | FR2610130B1 (fr) |
| GB (1) | GB2200227B (fr) |
| HK (1) | HK41891A (fr) |
| SG (1) | SG33791G (fr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6433779A (en) * | 1987-07-30 | 1989-02-03 | Toshiba Corp | Track access device |
| NL8802435A (nl) * | 1988-10-05 | 1990-05-01 | Philips Nv | Inrichting voor het aftasten van een registratiedrager, alsmede een regelschakeling voor toepassing in een dergelijke inrichting. |
| JP2808747B2 (ja) * | 1989-11-15 | 1998-10-08 | ソニー株式会社 | トラックジャンプ制御回路 |
| JPH04254919A (ja) * | 1991-02-07 | 1992-09-10 | Hitachi Ltd | トラッキング制御方法及び装置 |
| JP3275404B2 (ja) * | 1992-03-31 | 2002-04-15 | 三菱化学株式会社 | 情報記録媒体および情報記録装置 |
| US5978329A (en) | 1995-06-07 | 1999-11-02 | Discovision Associates | Technique for closed loop servo operation in optical disc tracking control |
| EP0777218B1 (fr) | 1995-12-06 | 2001-05-16 | Discovision Associates | Dispositif et méthode de réglage de focalisation |
| US5689485A (en) | 1996-04-01 | 1997-11-18 | Discovision Associates | Tracking control apparatus and method |
| JP3516598B2 (ja) * | 1998-10-29 | 2004-04-05 | パイオニア株式会社 | トラックジャンプ装置 |
| US20140312018A1 (en) * | 2011-11-10 | 2014-10-23 | Ipg Photonics Corporation | Dynamic Height Adjusting System and Method for Head Assembly of Laser Processing System |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4037252A (en) * | 1973-11-10 | 1977-07-19 | U.S. Philips Corporation | Apparatus for reading a disc-shaped record carrier with plural scanning spots for stable radial tracking |
| JPS5921104B2 (ja) * | 1977-03-08 | 1984-05-17 | 日本ビクター株式会社 | 情報記録媒体再生装置におけるトラッキングサ−ボ装置 |
| JPS6051172B2 (ja) * | 1978-12-22 | 1985-11-12 | 富士通株式会社 | 磁気デイスク装置 |
| GB2085189B (en) * | 1980-09-19 | 1984-03-28 | Burroughs Corp | Head position system for disc data store |
| US4414658A (en) * | 1981-06-12 | 1983-11-08 | Mcdonnell Douglas Corporation | Linear tracking arrangement in a photographic disc type information containing system |
| US4400747A (en) * | 1981-06-26 | 1983-08-23 | International Business Machines Corporation | Servo system for data storage apparatus |
| US4462053A (en) * | 1981-07-02 | 1984-07-24 | Irwin International, Inc. | Method for controlling a disc head |
| JPS58143472A (ja) * | 1982-02-22 | 1983-08-26 | Hitachi Ltd | 記録情報再生装置のトラツキングサ−ボ制御装置 |
| US4530079A (en) * | 1983-03-23 | 1985-07-16 | Xerox Corporation | Track following system for optical disc drive |
| JPS60113370A (ja) * | 1983-11-25 | 1985-06-19 | Mitsubishi Electric Corp | 記録再生素子の位置制御装置 |
| JPS60119641A (ja) * | 1983-12-01 | 1985-06-27 | Pioneer Electronic Corp | トラッキングエラ−信号発生装置 |
| JPS61198437A (ja) * | 1985-02-27 | 1986-09-02 | Toshiba Corp | デイスク再生装置のトラツキングエラ−信号生成回路 |
| US4656538A (en) * | 1985-11-14 | 1987-04-07 | Xebec Development Partners, Ltd. | Disk drive control system |
| AU591207B2 (en) * | 1985-12-23 | 1989-11-30 | Sony Corporation | Tracking control apparatus |
| JPS6352364A (ja) * | 1986-08-21 | 1988-03-05 | Sony Corp | 情報記録再生装置 |
-
1987
- 1987-01-22 JP JP62012716A patent/JP2696822B2/ja not_active Expired - Fee Related
-
1988
- 1988-01-19 US US07/145,308 patent/US4853918A/en not_active Expired - Lifetime
- 1988-01-19 GB GB8801083A patent/GB2200227B/en not_active Expired - Lifetime
- 1988-01-21 FR FR8800663A patent/FR2610130B1/fr not_active Expired - Fee Related
- 1988-01-21 DE DE3801696A patent/DE3801696C2/de not_active Expired - Fee Related
- 1988-01-21 KR KR1019880000430A patent/KR960007230B1/ko not_active IP Right Cessation
-
1991
- 1991-05-03 SG SG337/91A patent/SG33791G/en unknown
- 1991-05-30 HK HK418/91A patent/HK41891A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR960007230B1 (ko) | 1996-05-29 |
| JPS63181179A (ja) | 1988-07-26 |
| SG33791G (en) | 1991-06-21 |
| DE3801696C2 (de) | 1996-12-05 |
| JP2696822B2 (ja) | 1998-01-14 |
| DE3801696A1 (de) | 1988-08-04 |
| KR880009346A (ko) | 1988-09-14 |
| FR2610130A1 (fr) | 1988-07-29 |
| GB8801083D0 (en) | 1988-02-17 |
| GB2200227A (en) | 1988-07-27 |
| GB2200227B (en) | 1991-01-16 |
| FR2610130B1 (fr) | 1996-01-26 |
| US4853918A (en) | 1989-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PF | Patent in force | ||
| PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20060119 |