CA1206613A - Optical disc players - Google Patents
Optical disc playersInfo
- Publication number
- CA1206613A CA1206613A CA000431828A CA431828A CA1206613A CA 1206613 A CA1206613 A CA 1206613A CA 000431828 A CA000431828 A CA 000431828A CA 431828 A CA431828 A CA 431828A CA 1206613 A CA1206613 A CA 1206613A
- Authority
- CA
- Canada
- Prior art keywords
- signal
- optical disc
- level
- tracking error
- error signal
- 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 title claims abstract description 57
- 238000007493 shaping process Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims 1
- 238000002407 reforming Methods 0.000 claims 1
- 150000002500 ions Chemical class 0.000 description 9
- 230000000630 rising effect Effects 0.000 description 8
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- 241000479907 Devia <beetle> Species 0.000 description 1
- 241000353097 Molva molva Species 0.000 description 1
- 241000183024 Populus tremula Species 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 210000001747 pupil Anatomy 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
-
- 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
- G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
- G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
Landscapes
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP120440/82 | 1982-07-10 | ||
| JP57120440A JPS5911543A (ja) | 1982-07-10 | 1982-07-10 | 光学式デイスク再生装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1206613A true CA1206613A (en) | 1986-06-24 |
Family
ID=14786254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000431828A Expired CA1206613A (en) | 1982-07-10 | 1983-07-05 | Optical disc players |
Country Status (7)
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58208944A (ja) * | 1982-05-31 | 1983-12-05 | Sony Corp | 光学ヘツド制御信号発生装置 |
| JPS59191144A (ja) * | 1983-04-14 | 1984-10-30 | Sony Corp | 光ピツクアツプのトラツキングサ−ボ回路 |
| DE3618720A1 (de) * | 1985-06-05 | 1986-12-11 | Hitachi, Ltd., Tokio/Tokyo | Verfahren und vorrichtung zur spurnachfuehrung bei bildplatten |
| JPS62180568A (ja) * | 1986-02-04 | 1987-08-07 | Sony Corp | デイスク状記録媒体の欠陥検出装置 |
| JP2796285B2 (ja) * | 1986-07-11 | 1998-09-10 | 株式会社日立製作所 | トラッキング方法及びそれを用いた光ディスク装置 |
| JPH07118166B2 (ja) * | 1987-05-21 | 1995-12-18 | パイオニア株式会社 | トラッキング回路 |
| JPS6446237A (en) * | 1987-08-12 | 1989-02-20 | Canon Kk | Optical information recording and reproducing device |
| JPH0760526B2 (ja) * | 1989-04-10 | 1995-06-28 | 富士通株式会社 | 光記憶装置のビーム移動速度測定方法とその装置 |
| US5038333A (en) * | 1989-05-05 | 1991-08-06 | International Business Machines Corporation | Positioning systems including reliable track crossing detection for high speed relative motions |
| ES2095965T3 (es) * | 1991-02-06 | 1997-03-01 | Blaupunkt Werke Gmbh | Procedimiento para la correccion de un angulo erroneo. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5774837A (en) * | 1980-10-25 | 1982-05-11 | Olympus Optical Co Ltd | Signal detection system of optical information reproducing device |
| JPS5814332A (ja) * | 1981-07-16 | 1983-01-27 | Mitsubishi Electric Corp | 光学式情報再生装置 |
-
1982
- 1982-07-10 JP JP57120440A patent/JPS5911543A/ja active Granted
-
1983
- 1983-07-05 CA CA000431828A patent/CA1206613A/en not_active Expired
- 1983-07-08 DE DE19833324738 patent/DE3324738A1/de active Granted
- 1983-07-08 US US06/511,912 patent/US4593386A/en not_active Expired - Lifetime
- 1983-07-08 GB GB08318490A patent/GB2124802B/en not_active Expired
- 1983-07-08 FR FR8311461A patent/FR2530060B1/fr not_active Expired
- 1983-07-08 KR KR1019830003127A patent/KR910005307B1/ko not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3324738A1 (de) | 1984-01-12 |
| DE3324738C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-11-07 |
| FR2530060B1 (fr) | 1985-07-12 |
| JPH0330928B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-05-01 |
| GB2124802B (en) | 1986-02-26 |
| KR910005307B1 (ko) | 1991-07-24 |
| JPS5911543A (ja) | 1984-01-21 |
| KR840005587A (ko) | 1984-11-14 |
| GB8318490D0 (en) | 1983-08-10 |
| FR2530060A1 (fr) | 1984-01-13 |
| GB2124802A (en) | 1984-02-22 |
| US4593386A (en) | 1986-06-03 |
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| JP2845569B2 (ja) | 光ディスク装置 | |
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| KR970011810B1 (ko) | 미니디스크 서보/데이타 신호생성회로 | |
| JPH03112184A (ja) | 半導体レーザ装置 | |
| JPH06180950A (ja) | 光学的情報再生装置 | |
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| JPS60167129A (ja) | 記録担体及び情報処理装置 | |
| JPH04205922A (ja) | 光学情報記録再生装置 | |
| JPH02254635A (ja) | プリグルーブ横断信号検出装置 | |
| JPS5938651B2 (ja) | トラツキングサ−ボ装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |