ES455011A1 - Perfeccionamientos introducidos en un sistema automatico de enfoque optico, para un aparato para leer pistas de informa-cion en un registro. - Google Patents
Perfeccionamientos introducidos en un sistema automatico de enfoque optico, para un aparato para leer pistas de informa-cion en un registro.Info
- Publication number
- ES455011A1 ES455011A1 ES455011A ES455011A ES455011A1 ES 455011 A1 ES455011 A1 ES 455011A1 ES 455011 A ES455011 A ES 455011A ES 455011 A ES455011 A ES 455011A ES 455011 A1 ES455011 A1 ES 455011A1
- Authority
- ES
- Spain
- Prior art keywords
- plane
- focusing
- objective
- radiation
- information
- 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
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
- G11B7/0908—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 focusing 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
- G11B7/0908—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 focusing only
- G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NLAANVRAGE7600423,A NL178915C (nl) | 1976-01-16 | 1976-01-16 | Automatisch optisch focusseersysteem. |
Publications (1)
Publication Number | Publication Date |
---|---|
ES455011A1 true ES455011A1 (es) | 1977-12-16 |
Family
ID=19825458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES455011A Expired ES455011A1 (es) | 1976-01-16 | 1977-01-14 | Perfeccionamientos introducidos en un sistema automatico de enfoque optico, para un aparato para leer pistas de informa-cion en un registro. |
Country Status (20)
Country | Link |
---|---|
US (1) | US4032776A (es) |
JP (2) | JPS5288306A (es) |
AR (1) | AR211717A1 (es) |
AT (1) | AT351817B (es) |
AU (1) | AU507647B2 (es) |
BE (1) | BE850414A (es) |
BR (1) | BR7700212A (es) |
CA (1) | CA1081511A (es) |
CH (1) | CH610432A5 (es) |
DD (1) | DD129588A5 (es) |
DE (1) | DE2700136C2 (es) |
DK (1) | DK12777A (es) |
ES (1) | ES455011A1 (es) |
FR (1) | FR2338543A1 (es) |
GB (1) | GB1565741A (es) |
IT (1) | IT1076518B (es) |
NL (1) | NL178915C (es) |
NZ (1) | NZ183066A (es) |
SE (1) | SE7700274L (es) |
ZA (1) | ZA767246B (es) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL176315C (nl) * | 1976-05-12 | 1985-03-18 | Philips Nv | Optische aftastinrichting. |
NL7703232A (nl) * | 1977-03-25 | 1978-09-27 | Philips Nv | Optische aftastinrichting. |
NL7713711A (nl) * | 1977-12-12 | 1979-06-14 | Philips Nv | Optisch uitleeseenheid voor het uitlezen van een bewegende informatiedrager, in het bijzonder voor het uitlezen van een videoplaat. |
JPS54102107A (en) * | 1978-01-30 | 1979-08-11 | Hitachi Ltd | Control information detecting method |
US4302830A (en) * | 1978-05-10 | 1981-11-24 | Olympus Optical Company Ltd. | Optical information reading-out apparatus |
FR2425782B1 (fr) * | 1978-05-10 | 1988-02-12 | Olympus Optical Co | Appareil de lecture d'informations optiques |
US4241423A (en) * | 1978-12-22 | 1980-12-23 | Rca Corporation | Optical memory with injection laser as light source and detector |
US4445209A (en) * | 1979-08-27 | 1984-04-24 | Discovision Associates | Dithered focusing systems |
NL8004380A (nl) * | 1980-07-31 | 1982-03-01 | Philips Nv | Optische inrichting voor het met een stralingsbundel inschrijven en/of uitlezen van registratiesporen. |
JPS57176543A (en) * | 1981-04-20 | 1982-10-29 | Sony Corp | Optical type track scanner |
NL8202451A (nl) * | 1982-06-17 | 1984-01-16 | Philips Nv | Optische inrichting. |
US4499569A (en) * | 1982-09-07 | 1985-02-12 | Discovision Associates | Writing beam focus monitor |
JPS5971141A (ja) * | 1982-10-14 | 1984-04-21 | Mitsubishi Electric Corp | 光学的信号読出し装置 |
US4598989A (en) * | 1982-12-23 | 1986-07-08 | Konishiroku Photo Industry Co. Ltd. | Camera |
JPS6020023U (ja) * | 1983-07-15 | 1985-02-12 | アルプス電気株式会社 | 光学式ピツクアツプにおける支持装置 |
JPS6026621U (ja) * | 1983-07-28 | 1985-02-22 | アルプス電気株式会社 | 光学式ヘツド位置制御装置 |
JPS6093122U (ja) * | 1983-11-30 | 1985-06-25 | ソニー株式会社 | 光学ピツクアツプ |
JPS6093123U (ja) * | 1983-11-30 | 1985-06-25 | ソニー株式会社 | 光学ピツクアツプ |
US4607157A (en) * | 1984-02-09 | 1986-08-19 | Xerox Corporation | Automatic focus offset correction system |
JP2507315Y2 (ja) * | 1985-12-02 | 1996-08-14 | エヌティエヌ 株式会社 | 光学式デイスクプレ−ヤのレンズホルダ |
US4956833A (en) * | 1986-03-31 | 1990-09-11 | Asahi Kogaku Kogyo Kabushiki Kaisha | Objective driving device for an optical disk apparatus |
US4972397A (en) * | 1988-12-02 | 1990-11-20 | Drexler Technology Corporation | Dithering optical data logger |
JPH03100935A (ja) * | 1989-09-12 | 1991-04-25 | Hitachi Ltd | 光ピツクアツプの防塵装置 |
US5311489A (en) * | 1989-10-13 | 1994-05-10 | Canon Kabushiki Kaisha | Optical head for recording, reproducing, or erasing information having fixed and movable head units |
US5138497A (en) * | 1991-03-15 | 1992-08-11 | Eastman Kodak Company | High speed focusing lens assembly |
US5416756A (en) * | 1991-11-07 | 1995-05-16 | Mitsubishi Denki Kabushiki Kaisha | Lens actuating system with improved frequency response for optical disk drive |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3020414A (en) * | 1960-07-05 | 1962-02-06 | William B Mcknight | Scanning mirror assembly |
US3418478A (en) * | 1966-08-29 | 1968-12-24 | Barnes Eng Co | Horizon sensor using two stationary fields of view separated by a fixed elevation angle which are alternately sampled |
US3642344A (en) * | 1970-11-27 | 1972-02-15 | Honeywell Inc | Optical scanner having high-frequency torsional oscillator |
US3967110A (en) * | 1973-09-21 | 1976-06-29 | Corning Glass Works | Automatic focusing system |
NL7414695A (nl) * | 1973-11-09 | 1975-05-13 | Hitachi Ltd | Automatische focusseringsinrichting. |
FR2251876B1 (es) * | 1973-11-16 | 1977-09-23 | Thomson Brandt | |
US3932700A (en) * | 1974-02-04 | 1976-01-13 | Zenith Radio Corporation | Focus tracking registration for optical reproducing systems |
US3946166A (en) * | 1974-04-01 | 1976-03-23 | Zenith Radio Corporation | Tracking arrangement |
DE2458917C3 (de) * | 1974-12-12 | 1981-12-03 | Thomson-Brandt, 75008 Paris | Regelanordnung für die Fokussierung eines Leselichtbündels |
NL174609C (nl) * | 1975-10-15 | 1984-07-02 | Philips Nv | Volgspiegelinrichting in een optische platenspeler. |
-
1976
- 1976-01-16 NL NLAANVRAGE7600423,A patent/NL178915C/xx not_active IP Right Cessation
- 1976-02-23 US US05/660,659 patent/US4032776A/en not_active Expired - Lifetime
- 1976-12-06 ZA ZA00767246A patent/ZA767246B/xx unknown
- 1976-12-15 AR AR265867A patent/AR211717A1/es active
-
1977
- 1977-01-04 DE DE2700136A patent/DE2700136C2/de not_active Expired
- 1977-01-12 CA CA269,546A patent/CA1081511A/en not_active Expired
- 1977-01-13 DD DD7700196923A patent/DD129588A5/xx unknown
- 1977-01-13 SE SE7700274A patent/SE7700274L/xx unknown
- 1977-01-13 AU AU21290/77A patent/AU507647B2/en not_active Expired
- 1977-01-13 CH CH41177A patent/CH610432A5/xx not_active IP Right Cessation
- 1977-01-13 GB GB1285/77A patent/GB1565741A/en not_active Expired
- 1977-01-13 NZ NZ183066A patent/NZ183066A/xx unknown
- 1977-01-13 BR BR7700212A patent/BR7700212A/pt unknown
- 1977-01-13 AT AT16177A patent/AT351817B/de not_active IP Right Cessation
- 1977-01-13 JP JP197477A patent/JPS5288306A/ja active Pending
- 1977-01-13 IT IT19268/77A patent/IT1076518B/it active
- 1977-01-13 DK DK12777A patent/DK12777A/da unknown
- 1977-01-14 BE BE174111A patent/BE850414A/xx unknown
- 1977-01-14 FR FR7700988A patent/FR2338543A1/fr active Granted
- 1977-01-14 ES ES455011A patent/ES455011A1/es not_active Expired
-
1985
- 1985-04-22 JP JP1985059550U patent/JPS60183920U/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
CH610432A5 (es) | 1979-04-12 |
DE2700136C2 (de) | 1983-11-17 |
DE2700136A1 (de) | 1977-07-21 |
AU507647B2 (en) | 1980-02-21 |
NL7600423A (nl) | 1977-07-19 |
IT1076518B (it) | 1985-04-27 |
NL178915C (nl) | 1986-06-02 |
JPS60183920U (ja) | 1985-12-06 |
FR2338543A1 (fr) | 1977-08-12 |
NL178915B (nl) | 1986-01-02 |
ATA16177A (de) | 1979-01-15 |
ZA767246B (en) | 1978-07-26 |
NZ183066A (en) | 1980-02-21 |
BE850414A (fr) | 1977-07-14 |
DD129588A5 (de) | 1978-01-25 |
SE7700274L (sv) | 1977-07-17 |
AT351817B (de) | 1979-08-10 |
GB1565741A (en) | 1980-04-23 |
AU2129077A (en) | 1978-07-20 |
FR2338543B1 (es) | 1980-03-21 |
US4032776A (en) | 1977-06-28 |
JPH0233294Y2 (es) | 1990-09-07 |
AR211717A1 (es) | 1978-02-28 |
CA1081511A (en) | 1980-07-15 |
DK12777A (da) | 1977-07-17 |
BR7700212A (pt) | 1977-09-20 |
JPS5288306A (en) | 1977-07-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES455011A1 (es) | Perfeccionamientos introducidos en un sistema automatico de enfoque optico, para un aparato para leer pistas de informa-cion en un registro. | |
ES455108A1 (es) | Un sistema perfeccionado de enfoque optico automatico ade- cuado para un aparato para leer opticamente una pista de in-formacion en un registro. | |
US3932700A (en) | Focus tracking registration for optical reproducing systems | |
US3673412A (en) | Radiant energy beam scanning method and apparatus | |
GB1532345A (en) | Information play-back apparatus | |
ES458637A1 (es) | Un dispositivo explorador optico perfeccionado que es ade- cuado para explorar pistas de registro en una superficie de registro de un portador de registro. | |
KR880002326B1 (ko) | 디스크 재생장치 | |
US4542491A (en) | Optical information disc apparatus with autofocusing servo system | |
KR0147628B1 (ko) | 다층 기록막을 갖는 광디스크용 광픽업 장치 | |
EP0310156B1 (en) | Optical disc player | |
EP0154302B1 (en) | Optical system for detecting a position of an objective lens | |
US4512004A (en) | Apparatus for optically reproducing an information signal recorded on a record disc | |
US4301527A (en) | Optical head for a videodisc recorder/player | |
JPH01273228A (ja) | 光ピックアップ装置 | |
GB1472933A (en) | Optical disc read-out system | |
JPS55101142A (en) | Focus detection unit of optical reproducing device | |
US4310911A (en) | Control information detecting method and apparatus in optical-type video disc player | |
GB2215900A (en) | Optical recording and/or reproducing apparatus | |
KR950014832B1 (ko) | 광학식 디스크재생장치의 촛점서어보이득 조정회로 | |
HK42796A (en) | Apparatus for the reproduction of data | |
JP2682757B2 (ja) | 対物レンズの焦点合わせを機械により実行する方法および焦点合わせ装置 | |
JPS6158887B2 (es) | ||
JPS5885939A (ja) | 光情報読出し装置 | |
JPS6136297B2 (es) | ||
JPS5730132A (en) | Magnetooptical storage device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19981103 |