DE3641587C2 - - Google Patents
Info
- Publication number
- DE3641587C2 DE3641587C2 DE19863641587 DE3641587A DE3641587C2 DE 3641587 C2 DE3641587 C2 DE 3641587C2 DE 19863641587 DE19863641587 DE 19863641587 DE 3641587 A DE3641587 A DE 3641587A DE 3641587 C2 DE3641587 C2 DE 3641587C2
- Authority
- DE
- Germany
- Prior art keywords
- error signal
- tracking error
- track
- gain
- frequency
- 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
- 206010028896 Needle track marks Diseases 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 23
- 239000002131 composite material Substances 0.000 claims description 20
- 238000005070 sampling Methods 0.000 claims description 14
- 230000004044 response Effects 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims 2
- 239000000654 additive Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000001629 suppression Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000003362 replicative effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 108010074864 Factor XI Proteins 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000007796 conventional method Methods 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
- 230000006872 improvement Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000758 substrate Substances 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
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
-
- 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
- G11B7/0904—Dithered tracking systems
-
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27322885A JPH06103539B2 (ja) | 1985-12-06 | 1985-12-06 | 光デイスクトラツキング装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3641587A1 DE3641587A1 (de) | 1987-06-11 |
| DE3641587C2 true DE3641587C2 (enrdf_load_stackoverflow) | 1990-12-13 |
Family
ID=17524900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19863641587 Granted DE3641587A1 (de) | 1985-12-06 | 1986-12-05 | Verfahren und vorrichtung fuer zusammengesetzte wobblespur-servoanordnung |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH06103539B2 (enrdf_load_stackoverflow) |
| DE (1) | DE3641587A1 (enrdf_load_stackoverflow) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2889236B2 (ja) * | 1987-06-24 | 1999-05-10 | ソニー株式会社 | 光ディスク装置におけるトラッキングサーボ方式 |
| JP2645025B2 (ja) * | 1987-09-04 | 1997-08-25 | 株式会社日立製作所 | 光記録再生方法 |
| JPH0721879B2 (ja) * | 1987-11-07 | 1995-03-08 | 株式会社日立製作所 | 光ディスク用レプリカ基盤，スタンパまたは原盤 |
| DE3856572T2 (de) * | 1987-11-18 | 2005-09-22 | Sharp K.K. | Optisches Speichermedium |
| NL8800151A (nl) * | 1988-01-22 | 1989-08-16 | Philips Nv | Werkwijze en inrichting voor het optekenen van een informatiesignaal. |
| JPH03100931A (ja) * | 1989-09-14 | 1991-04-25 | Mitsubishi Electric Corp | 光学式情報記録再生装置 |
| JP2593229B2 (ja) * | 1990-02-16 | 1997-03-26 | キヤノン株式会社 | 光ディスク装置 |
| US5247502A (en) * | 1990-02-16 | 1993-09-21 | Canon Kabushiki Kaisha | Optical information recording and/or reproducing apparatus and method for sampling an irradiation state error signal |
| CN1282180C (zh) * | 2000-06-22 | 2006-10-25 | 松下电器产业株式会社 | 光盘记录媒体 |
| CN1235205C (zh) * | 2000-06-26 | 2006-01-04 | 松下电器产业株式会社 | 光学头 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5415727B2 (enrdf_load_stackoverflow) * | 1973-02-02 | 1979-06-16 | ||
| US4748609A (en) * | 1985-03-29 | 1988-05-31 | Hitachi, Ltd. | Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset |
-
1985
- 1985-12-06 JP JP27322885A patent/JPH06103539B2/ja not_active Expired - Lifetime
-
1986
- 1986-12-05 DE DE19863641587 patent/DE3641587A1/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62134830A (ja) | 1987-06-17 |
| JPH06103539B2 (ja) | 1994-12-14 |
| DE3641587A1 (de) | 1987-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |