CA2000313A1 - Appareil de guidage asservi pour support optique discoidal - Google Patents
Appareil de guidage asservi pour support optique discoidalInfo
- Publication number
- CA2000313A1 CA2000313A1 CA2000313A CA2000313A CA2000313A1 CA 2000313 A1 CA2000313 A1 CA 2000313A1 CA 2000313 A CA2000313 A CA 2000313A CA 2000313 A CA2000313 A CA 2000313A CA 2000313 A1 CA2000313 A1 CA 2000313A1
- Authority
- CA
- Canada
- Prior art keywords
- tracking servo
- disc
- record medium
- shaped optical
- optical record
- 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.)
- Granted
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
- 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
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63-257559 | 1988-10-13 | ||
| JP63257559A JP2734562B2 (ja) | 1988-10-13 | 1988-10-13 | トラッキングサーボの方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2000313A1 true CA2000313A1 (fr) | 1990-04-13 |
| CA2000313C CA2000313C (fr) | 1995-06-06 |
Family
ID=17307965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002000313A Expired - Fee Related CA2000313C (fr) | 1988-10-13 | 1989-10-12 | Appareil de guidage asservi pour support optique discoidal |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5105406A (fr) |
| JP (1) | JP2734562B2 (fr) |
| CA (1) | CA2000313C (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5351224A (en) * | 1990-03-08 | 1994-09-27 | Oki Electric Industry Co., Ltd. | Adjustment of tracking servo and focusing servo in optical data recording/reproducing apparatus |
| JPH04368637A (ja) * | 1991-06-17 | 1992-12-21 | Sony Corp | サーボ回路 |
| JPH05120818A (ja) * | 1991-10-25 | 1993-05-18 | Matsushita Electric Ind Co Ltd | ジヤンピング走査装置 |
| TWI253636B (en) * | 2003-11-19 | 2006-04-21 | Mediatek Inc | Apparatus with switching servo gain and offset for optical disk device and method thereof |
| WO2006046469A1 (fr) * | 2004-10-25 | 2006-05-04 | Matsushita Electric Industrial Co., Ltd. | Dispositif à disque optique |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL173343C (nl) * | 1972-03-29 | 1984-01-02 | Philips Nv | Inrichting voor het uitlezen van een schijfvormige registratiedrager met in optische vorm gecodeerde beeld-en/of geluidssignalen. |
| JPS59154677A (ja) * | 1983-02-22 | 1984-09-03 | Matsushita Electric Ind Co Ltd | トラツキング制御装置 |
-
1988
- 1988-10-13 JP JP63257559A patent/JP2734562B2/ja not_active Expired - Fee Related
-
1989
- 1989-10-12 CA CA002000313A patent/CA2000313C/fr not_active Expired - Fee Related
- 1989-10-12 US US07/420,259 patent/US5105406A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5105406A (en) | 1992-04-14 |
| JPH02105336A (ja) | 1990-04-17 |
| CA2000313C (fr) | 1995-06-06 |
| JP2734562B2 (ja) | 1998-03-30 |
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| CA2000313A1 (fr) | Appareil de guidage asservi pour support optique discoidal | |
| EP0385498A3 (fr) | Appareil d'enregistrement et de reproduction pour disque optique | |
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| KR910006959A (ko) | 디지탈 정보 신호 재생 장치 | |
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| US5124964A (en) | Focus servo gain setting circuit for optical record disc reproducing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |