JPS5630612B2 - - Google Patents
Info
- Publication number
- JPS5630612B2 JPS5630612B2 JP14267975A JP14267975A JPS5630612B2 JP S5630612 B2 JPS5630612 B2 JP S5630612B2 JP 14267975 A JP14267975 A JP 14267975A JP 14267975 A JP14267975 A JP 14267975A JP S5630612 B2 JPS5630612 B2 JP S5630612B2
- Authority
- JP
- Japan
- 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
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
- G11B7/0945—Methods for initialising servos, start-up sequences
Landscapes
- Manufacturing Optical Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14267975A JPS5265404A (en) | 1975-11-26 | 1975-11-26 | Information recording original disk being furnished with pattern for d etecting focus position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14267975A JPS5265404A (en) | 1975-11-26 | 1975-11-26 | Information recording original disk being furnished with pattern for d etecting focus position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5265404A JPS5265404A (en) | 1977-05-30 |
| JPS5630612B2 true JPS5630612B2 (US06650917-20031118-M00005.png) | 1981-07-16 |
Family
ID=15320984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14267975A Granted JPS5265404A (en) | 1975-11-26 | 1975-11-26 | Information recording original disk being furnished with pattern for d etecting focus position |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5265404A (US06650917-20031118-M00005.png) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5883339A (ja) * | 1981-11-10 | 1983-05-19 | Teac Co | 光学的情報記録再生装置において最適フォ−カス状態を得る方法 |
| JPS58100249A (ja) * | 1981-12-09 | 1983-06-14 | Matsushita Electric Ind Co Ltd | 光学情報記録用担体 |
| JPS58100235A (ja) * | 1981-12-11 | 1983-06-14 | Victor Co Of Japan Ltd | 情報記録円盤及びその文字記録方式 |
| JPS61140440U (US06650917-20031118-M00005.png) * | 1985-02-22 | 1986-08-30 |
-
1975
- 1975-11-26 JP JP14267975A patent/JPS5265404A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5265404A (en) | 1977-05-30 |
