JPH0439151B2 - - Google Patents
Info
- Publication number
- JPH0439151B2 JPH0439151B2 JP5003582A JP5003582A JPH0439151B2 JP H0439151 B2 JPH0439151 B2 JP H0439151B2 JP 5003582 A JP5003582 A JP 5003582A JP 5003582 A JP5003582 A JP 5003582A JP H0439151 B2 JPH0439151 B2 JP H0439151B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- optical disk
- track
- optical
- light beam
- 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
- 230000003287 optical effect Effects 0.000 claims description 92
- 239000011295 pitch Substances 0.000 claims description 23
- 238000013459 approach Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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
- G11B7/0857—Arrangements for mechanically moving the whole head
- G11B7/08582—Sled-type positioners
- G11B7/08588—Sled-type positioners with position sensing by means of an auxiliary system using an external scale
-
- 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
- G11B7/085—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
- G11B7/08529—Methods and circuits to control the velocity of the head as it traverses the tracks
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5003582A JPS58169370A (ja) | 1982-03-30 | 1982-03-30 | 光デイスク装置 |
KR8205303A KR880000999B1 (ko) | 1981-11-25 | 1982-11-24 | 광학적 정보 기억장치 |
AT82110907T ATE36917T1 (de) | 1981-11-25 | 1982-11-25 | Optische speichervorrichtung. |
EP82110907A EP0080212B1 (de) | 1981-11-25 | 1982-11-25 | Optische Speichervorrichtung |
DE8484113018T DE3279453D1 (en) | 1981-11-25 | 1982-11-25 | Access device for positioning a light beam to a desired guide groove of an optical memory apparatus |
EP84113018A EP0141396B1 (de) | 1981-11-25 | 1982-11-25 | Zugriffsvorrichtung zum Positionieren eines Lichtbündels auf einer gewünschten Führungsrille eines optischen Speichergerätes |
DE8282110907T DE3278981D1 (en) | 1981-11-25 | 1982-11-25 | Optical memory apparatus |
US06/736,125 US4607358A (en) | 1981-11-25 | 1985-05-20 | Optical memory apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5003582A JPS58169370A (ja) | 1982-03-30 | 1982-03-30 | 光デイスク装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58169370A JPS58169370A (ja) | 1983-10-05 |
JPH0439151B2 true JPH0439151B2 (de) | 1992-06-26 |
Family
ID=12847738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5003582A Granted JPS58169370A (ja) | 1981-11-25 | 1982-03-30 | 光デイスク装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58169370A (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5396477A (en) * | 1988-09-21 | 1995-03-07 | Hitachi, Ltd. | Light spot positioning method and optical disc memory apparatus employing the same |
JP2539539B2 (ja) * | 1990-09-18 | 1996-10-02 | 株式会社日立製作所 | 光情報記憶装置 |
JP3753517B2 (ja) | 1997-10-20 | 2006-03-08 | 富士通株式会社 | 光記録媒体ドライブ装置 |
-
1982
- 1982-03-30 JP JP5003582A patent/JPS58169370A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58169370A (ja) | 1983-10-05 |
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