JPH0452536B2 - - Google Patents
Info
- Publication number
- JPH0452536B2 JPH0452536B2 JP58228731A JP22873183A JPH0452536B2 JP H0452536 B2 JPH0452536 B2 JP H0452536B2 JP 58228731 A JP58228731 A JP 58228731A JP 22873183 A JP22873183 A JP 22873183A JP H0452536 B2 JPH0452536 B2 JP H0452536B2
- Authority
- JP
- Japan
- Prior art keywords
- track
- signal
- tracking
- width
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000007740 vapor deposition 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24085—Pits
-
- 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 Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58228731A JPS60121550A (ja) | 1983-12-02 | 1983-12-02 | 光学式情報記録担体 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58228731A JPS60121550A (ja) | 1983-12-02 | 1983-12-02 | 光学式情報記録担体 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60121550A JPS60121550A (ja) | 1985-06-29 |
JPH0452536B2 true JPH0452536B2 (fr) | 1992-08-24 |
Family
ID=16880925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58228731A Granted JPS60121550A (ja) | 1983-12-02 | 1983-12-02 | 光学式情報記録担体 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60121550A (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3135389B2 (ja) * | 1992-10-23 | 2001-02-13 | 松下電器産業株式会社 | 情報再生方法、情報記録再生方法、情報再生装置、記録媒体及び光ヘッド |
US5508995A (en) * | 1993-07-15 | 1996-04-16 | Matsushita Electric Industrial Co., Ltd. | Optical disk capable of recording information on both groove and land tracks |
JP2863431B2 (ja) * | 1994-01-31 | 1999-03-03 | シャープ株式会社 | 光磁気記録再生装置 |
JP2566111B2 (ja) * | 1994-01-31 | 1996-12-25 | シャープ株式会社 | 光磁気メモリ素子 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5930251A (ja) * | 1982-08-10 | 1984-02-17 | Toshiba Corp | 光学式情報記憶媒体 |
-
1983
- 1983-12-02 JP JP58228731A patent/JPS60121550A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5930251A (ja) * | 1982-08-10 | 1984-02-17 | Toshiba Corp | 光学式情報記憶媒体 |
Also Published As
Publication number | Publication date |
---|---|
JPS60121550A (ja) | 1985-06-29 |
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