CA1055156A - Apparatus for reading a disc-shaped record carrier - Google Patents
Apparatus for reading a disc-shaped record carrierInfo
- Publication number
- CA1055156A CA1055156A CA212,960A CA212960A CA1055156A CA 1055156 A CA1055156 A CA 1055156A CA 212960 A CA212960 A CA 212960A CA 1055156 A CA1055156 A CA 1055156A
- Authority
- CA
- Canada
- Prior art keywords
- control signal
- signal
- control
- detector
- radiation
- 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
- 230000005855 radiation Effects 0.000 claims abstract description 98
- 238000012546 transfer Methods 0.000 claims abstract description 36
- 238000013016 damping Methods 0.000 claims description 14
- 230000004069 differentiation Effects 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000010363 phase shift Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims 1
- 239000000306 component Substances 0.000 description 37
- 230000006870 function Effects 0.000 description 31
- 238000000034 method Methods 0.000 description 23
- 230000000087 stabilizing effect Effects 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 230000010355 oscillation Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 1
- XUKUURHRXDUEBC-KAYWLYCHSA-N Atorvastatin Chemical compound C=1C=CC=CC=1C1=C(C=2C=CC(F)=CC=2)N(CC[C@@H](O)C[C@@H](O)CC(O)=O)C(C(C)C)=C1C(=O)NC1=CC=CC=C1 XUKUURHRXDUEBC-KAYWLYCHSA-N 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- 101150087426 Gnal gene Proteins 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000013641 positive control Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 230000007704 transition Effects 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
- G11B7/0948—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 detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
-
- 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
- G11B7/0903—Multi-beam 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
- G11B7/0946—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 operation during external perturbations not related to the carrier or servo beam, e.g. vibration
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Holo Graphy (AREA)
- Recording Measured Values (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7315419A NL7315419A (nl) | 1973-11-10 | 1973-11-10 | Inrichting voor het uitlezen van een schijfvor- mige registratiedrager. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1055156A true CA1055156A (en) | 1979-05-22 |
Family
ID=19819976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA212,960A Expired CA1055156A (en) | 1973-11-10 | 1974-11-04 | Apparatus for reading a disc-shaped record carrier |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPS5433724B2 (en, 2012) |
| AR (1) | AR204426A1 (en, 2012) |
| AT (1) | AT336298B (en, 2012) |
| BE (1) | BE822040A (en, 2012) |
| BR (1) | BR7409349A (en, 2012) |
| CA (1) | CA1055156A (en, 2012) |
| CH (1) | CH579807A5 (en, 2012) |
| DE (1) | DE2452815C2 (en, 2012) |
| DK (1) | DK135070B (en, 2012) |
| ES (1) | ES431776A1 (en, 2012) |
| FR (1) | FR2251067B1 (en, 2012) |
| GB (1) | GB1490726A (en, 2012) |
| IT (1) | IT1024778B (en, 2012) |
| NL (1) | NL7315419A (en, 2012) |
| NO (1) | NO144501C (en, 2012) |
| SE (1) | SE394335B (en, 2012) |
| ZA (1) | ZA746767B (en, 2012) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2396379A1 (fr) * | 1977-07-01 | 1979-01-26 | Thomson Brandt | Lecteur optique de disque d'information muni d'un dispositif d'acces automatique aux informations |
| NL7803517A (nl) * | 1978-04-03 | 1979-10-05 | Philips Nv | Registratiedrager met een optisch uitleesbare fase- struktuur en inrichting voor het uitlezen. |
| JPS626580Y2 (en, 2012) * | 1979-11-17 | 1987-02-16 | ||
| NL8001974A (nl) * | 1980-04-03 | 1981-11-02 | Philips Nv | Spoorvolginrichting. |
| JPS57113428A (en) * | 1980-12-29 | 1982-07-14 | Pioneer Video Corp | Focus servo device |
| NL8105347A (nl) * | 1981-11-26 | 1983-06-16 | Philips Nv | Inrichting voor het optisch aftasten van een schijfvormige registratiedrager. |
| NL8105346A (en, 2012) * | 1981-11-26 | 1983-06-16 | ||
| NL8200208A (nl) * | 1982-01-21 | 1983-08-16 | Philips Nv | Inrichting voor het uitlezen van een schijfvormige registratiedrager. |
| JPS58143472A (ja) * | 1982-02-22 | 1983-08-26 | Hitachi Ltd | 記録情報再生装置のトラツキングサ−ボ制御装置 |
| JPS58169350A (ja) * | 1982-03-31 | 1983-10-05 | Hitachi Ltd | 光学的情報記録再生装置 |
| GB8824888D0 (en) | 1988-10-24 | 2002-08-14 | British Aerospace | Servo actuation systems |
-
1973
- 1973-11-10 NL NL7315419A patent/NL7315419A/xx not_active Application Discontinuation
-
1974
- 1974-01-01 AR AR256416A patent/AR204426A1/es active
- 1974-10-24 ZA ZA00746767A patent/ZA746767B/xx unknown
- 1974-11-04 CA CA212,960A patent/CA1055156A/en not_active Expired
- 1974-11-07 NO NO744015A patent/NO144501C/no unknown
- 1974-11-07 JP JP12763274A patent/JPS5433724B2/ja not_active Expired
- 1974-11-07 CH CH1490774A patent/CH579807A5/xx not_active IP Right Cessation
- 1974-11-07 IT IT70277/74A patent/IT1024778B/it active
- 1974-11-07 DK DK580974AA patent/DK135070B/da not_active IP Right Cessation
- 1974-11-07 GB GB48309/74A patent/GB1490726A/en not_active Expired
- 1974-11-07 BR BR9349/74A patent/BR7409349A/pt unknown
- 1974-11-07 SE SE7413962A patent/SE394335B/xx not_active IP Right Cessation
- 1974-11-07 DE DE2452815A patent/DE2452815C2/de not_active Expired
- 1974-11-08 FR FR7437019A patent/FR2251067B1/fr not_active Expired
- 1974-11-08 ES ES431776A patent/ES431776A1/es not_active Expired
- 1974-11-08 BE BE150377A patent/BE822040A/xx not_active IP Right Cessation
- 1974-11-08 AT AT895674A patent/AT336298B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK580974A (en, 2012) | 1975-07-07 |
| NO144501B (no) | 1981-06-01 |
| ES431776A1 (es) | 1976-12-16 |
| BE822040A (fr) | 1975-05-09 |
| ZA746767B (en) | 1976-05-26 |
| DE2452815C2 (de) | 1982-10-28 |
| JPS5433724B2 (en, 2012) | 1979-10-23 |
| GB1490726A (en) | 1977-11-02 |
| NL7315419A (nl) | 1975-05-13 |
| IT1024778B (it) | 1978-07-20 |
| AR204426A1 (es) | 1976-02-06 |
| BR7409349A (pt) | 1976-05-18 |
| AU7515574A (en) | 1976-05-13 |
| FR2251067B1 (en, 2012) | 1983-08-05 |
| SE7413962L (en, 2012) | 1975-05-12 |
| DE2452815A1 (de) | 1975-06-26 |
| FR2251067A1 (en, 2012) | 1975-06-06 |
| DK135070C (en, 2012) | 1977-08-01 |
| JPS5081218A (en, 2012) | 1975-07-01 |
| DK135070B (da) | 1977-02-28 |
| CH579807A5 (en, 2012) | 1976-09-15 |
| ATA895674A (de) | 1976-08-15 |
| AT336298B (de) | 1977-04-25 |
| NO744015L (en, 2012) | 1975-06-09 |
| NO144501C (no) | 1981-09-09 |
| SE394335B (sv) | 1977-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4037252A (en) | Apparatus for reading a disc-shaped record carrier with plural scanning spots for stable radial tracking | |
| US5303216A (en) | Optical recording and reproducing apparatus for tracking wobbling guide grooves | |
| US4773052A (en) | Dual mode disk player/recorder | |
| US5768227A (en) | Optical information recording and or reproducing apparatus and method for irradiating a recording medium having a plurality of information tracks | |
| US4357696A (en) | Optical scanning apparatus with focussing system | |
| JP3442984B2 (ja) | 光ピックアップの位置制御装置 | |
| US4497047A (en) | Optical disc player with focus control during search mode | |
| CA1055156A (en) | Apparatus for reading a disc-shaped record carrier | |
| US4805163A (en) | Tracking control unit in information reproducing apparatus | |
| US4471477A (en) | Apparatus for optically scanning a disc-shaped record carrier | |
| US6084835A (en) | Device for scanning optical discs using phase detection in a system with significant objective lens movement | |
| US5577009A (en) | Tracking control system for generating a variable still jump signal | |
| JPS5931129B2 (ja) | 光学的再生装置 | |
| JPS6333207B2 (en, 2012) | ||
| US5548114A (en) | Optical scanning device for scanning a record carrier with a scanning spot which deviates in a direction transverse to the scanning direction by an amount less than a trace pitch because of vibration | |
| HU217743B (hu) | Eljárás forgó adathordozó adatolvasáskor az adathordozóra irányított fénysugár névleges értékre való szabályozására és elrendezés az eljárás megvalósítására | |
| US6396779B1 (en) | Optical disk apparatus having tracking control for positioning a light beam along a track on an optical disk | |
| JPH0612595B2 (ja) | 制御装置 | |
| JP2693608B2 (ja) | 情報記録ディスク演奏装置 | |
| JPH031751B2 (en, 2012) | ||
| JP2538214B2 (ja) | 光学式情報記録再生装置 | |
| JP2912981B2 (ja) | 光学情報記録再生装置 | |
| JP2612270B2 (ja) | グレーテイング角度検出装置 | |
| JPH031750B2 (en, 2012) | ||
| JP4065636B2 (ja) | 光ディスク装置 |