JPS5755542A - Track retrieving device of optical information recorder and reproducer - Google Patents
Track retrieving device of optical information recorder and reproducerInfo
- Publication number
- JPS5755542A JPS5755542A JP13094280A JP13094280A JPS5755542A JP S5755542 A JPS5755542 A JP S5755542A JP 13094280 A JP13094280 A JP 13094280A JP 13094280 A JP13094280 A JP 13094280A JP S5755542 A JPS5755542 A JP S5755542A
- Authority
- JP
- Japan
- Prior art keywords
- track
- disk
- reproducer
- optical information
- retrieving device
- 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
- G11B7/09—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
- G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
- G11B7/0953—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 discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
-
- 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
- G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
Landscapes
- Automatic Focus Adjustment (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13094280A JPS5755542A (en) | 1980-09-19 | 1980-09-19 | Track retrieving device of optical information recorder and reproducer |
US06/301,420 US4484319A (en) | 1980-09-19 | 1981-09-11 | Apparatus for locating a track on disc-like optical information carriers |
DE8181107323T DE3175265D1 (en) | 1980-09-19 | 1981-09-16 | Track searching arrangement for an optical information recording and reproducing apparatus |
EP81107323A EP0048441B1 (en) | 1980-09-19 | 1981-09-16 | Track searching arrangement for an optical information recording and reproducing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13094280A JPS5755542A (en) | 1980-09-19 | 1980-09-19 | Track retrieving device of optical information recorder and reproducer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5755542A true JPS5755542A (en) | 1982-04-02 |
JPS6360449B2 JPS6360449B2 (ja) | 1988-11-24 |
Family
ID=15046271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13094280A Granted JPS5755542A (en) | 1980-09-19 | 1980-09-19 | Track retrieving device of optical information recorder and reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5755542A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01502629A (ja) * | 1987-08-29 | 1989-09-07 | 富士通株式会社 | 光記録トラックのアクセス方法 |
USRE36590E (en) * | 1987-08-29 | 2000-02-29 | Fujitsu Limited | Apparatus and method for accurately scanning a light beam across tracks of a recording medium |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5128720A (ja) * | 1974-09-04 | 1976-03-11 | Mitsubishi Electric Corp | |
JPS51107015A (ja) * | 1975-03-17 | 1976-09-22 | Hitachi Ltd |
-
1980
- 1980-09-19 JP JP13094280A patent/JPS5755542A/ja active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5128720A (ja) * | 1974-09-04 | 1976-03-11 | Mitsubishi Electric Corp | |
JPS51107015A (ja) * | 1975-03-17 | 1976-09-22 | Hitachi Ltd |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01502629A (ja) * | 1987-08-29 | 1989-09-07 | 富士通株式会社 | 光記録トラックのアクセス方法 |
USRE36590E (en) * | 1987-08-29 | 2000-02-29 | Fujitsu Limited | Apparatus and method for accurately scanning a light beam across tracks of a recording medium |
Also Published As
Publication number | Publication date |
---|---|
JPS6360449B2 (ja) | 1988-11-24 |
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