JPS5764337A - Track retrieval device - Google Patents
Track retrieval deviceInfo
- Publication number
- JPS5764337A JPS5764337A JP13816580A JP13816580A JPS5764337A JP S5764337 A JPS5764337 A JP S5764337A JP 13816580 A JP13816580 A JP 13816580A JP 13816580 A JP13816580 A JP 13816580A JP S5764337 A JPS5764337 A JP S5764337A
- Authority
- JP
- Japan
- Prior art keywords
- track
- difference signal
- photodetector
- disk
- tracking
- 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
- G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13816580A JPS5764337A (en) | 1980-10-01 | 1980-10-01 | Track retrieval device |
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 |
---|---|---|---|
JP13816580A JPS5764337A (en) | 1980-10-01 | 1980-10-01 | Track retrieval device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5764337A true JPS5764337A (en) | 1982-04-19 |
JPS6236286B2 JPS6236286B2 (US08197722-20120612-C00042.png) | 1987-08-06 |
Family
ID=15215538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13816580A Granted JPS5764337A (en) | 1980-09-19 | 1980-10-01 | Track retrieval device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5764337A (US08197722-20120612-C00042.png) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6224444A (ja) * | 1985-07-25 | 1987-02-02 | Pioneer Electronic Corp | トラック横切り方向検出装置 |
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 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0234786U (US08197722-20120612-C00042.png) * | 1988-08-30 | 1990-03-06 | ||
JPH0345425U (US08197722-20120612-C00042.png) * | 1989-09-11 | 1991-04-26 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51117005A (en) * | 1975-04-07 | 1976-10-14 | Hitachi Ltd | Tracking absorption equipment |
-
1980
- 1980-10-01 JP JP13816580A patent/JPS5764337A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51117005A (en) * | 1975-04-07 | 1976-10-14 | Hitachi Ltd | Tracking absorption equipment |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6224444A (ja) * | 1985-07-25 | 1987-02-02 | Pioneer Electronic Corp | トラック横切り方向検出装置 |
JPH0467692B2 (US08197722-20120612-C00042.png) * | 1985-07-25 | 1992-10-29 | Pioneer Electronic Corp | |
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 |
---|---|
JPS6236286B2 (US08197722-20120612-C00042.png) | 1987-08-06 |
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