JPS636928B2 - - Google Patents
Info
- Publication number
- JPS636928B2 JPS636928B2 JP58124716A JP12471683A JPS636928B2 JP S636928 B2 JPS636928 B2 JP S636928B2 JP 58124716 A JP58124716 A JP 58124716A JP 12471683 A JP12471683 A JP 12471683A JP S636928 B2 JPS636928 B2 JP S636928B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- tracking
- track
- recording
- signals
- 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
- 238000000034 method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 16
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- 239000011295 pitch Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001228 spectrum Methods 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
- G11B7/09—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
- G11B7/0901—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 for track following 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
- G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57058122A JPS6058530B2 (ja) | 1982-04-09 | 1982-04-09 | 情報再生装置 |
| JP58124716A JPS59146447A (ja) | 1982-04-09 | 1983-07-11 | 情報記録媒体の信号書き込み方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57058122A JPS6058530B2 (ja) | 1982-04-09 | 1982-04-09 | 情報再生装置 |
| JP58124716A JPS59146447A (ja) | 1982-04-09 | 1983-07-11 | 情報記録媒体の信号書き込み方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59146447A JPS59146447A (ja) | 1984-08-22 |
| JPS636928B2 true JPS636928B2 (de) | 1988-02-13 |
Family
ID=26399204
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57058122A Expired JPS6058530B2 (ja) | 1982-04-09 | 1982-04-09 | 情報再生装置 |
| JP58124716A Granted JPS59146447A (ja) | 1982-04-09 | 1983-07-11 | 情報記録媒体の信号書き込み方法 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57058122A Expired JPS6058530B2 (ja) | 1982-04-09 | 1982-04-09 | 情報再生装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (2) | JPS6058530B2 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02141524U (de) * | 1989-04-25 | 1990-11-28 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4648084A (en) * | 1981-12-10 | 1987-03-03 | Discovision Associates | Storage medium track pitch detector |
| FR2567673B1 (fr) * | 1984-07-10 | 1986-11-07 | Thomson Alcatel Gigadisc | Support d'information inscriptible optiquement selon une piste definie par des motifs de pregravure et dispositif optique de suivi de piste mettant en oeuvre un tel support |
| JPS6380365U (de) * | 1986-11-17 | 1988-05-27 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3593333A (en) * | 1969-11-26 | 1971-07-13 | Ibm | Position detection for a track following servo system |
-
1982
- 1982-04-09 JP JP57058122A patent/JPS6058530B2/ja not_active Expired
-
1983
- 1983-07-11 JP JP58124716A patent/JPS59146447A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3593333A (en) * | 1969-11-26 | 1971-07-13 | Ibm | Position detection for a track following servo system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02141524U (de) * | 1989-04-25 | 1990-11-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6058530B2 (ja) | 1985-12-20 |
| JPS59146447A (ja) | 1984-08-22 |
| JPS58118041A (ja) | 1983-07-13 |
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