CA1073100A - Dispositif de focalisation dynamique de lentille d'objectif de lecteur de disque video - Google Patents

Dispositif de focalisation dynamique de lentille d'objectif de lecteur de disque video

Info

Publication number
CA1073100A
CA1073100A CA314,703A CA314703A CA1073100A CA 1073100 A CA1073100 A CA 1073100A CA 314703 A CA314703 A CA 314703A CA 1073100 A CA1073100 A CA 1073100A
Authority
CA
Canada
Prior art keywords
disc
head
objective lens
read head
path
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
Application number
CA314,703A
Other languages
English (en)
Inventor
James E. Elliott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Discovision Associates
Original Assignee
MCA Discovision Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US00299893A external-priority patent/US3829622A/en
Application filed by MCA Discovision Inc filed Critical MCA Discovision Inc
Priority to CA314,703A priority Critical patent/CA1073100A/fr
Application granted granted Critical
Publication of CA1073100A publication Critical patent/CA1073100A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
CA314,703A 1972-10-24 1978-10-30 Dispositif de focalisation dynamique de lentille d'objectif de lecteur de disque video Expired CA1073100A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA314,703A CA1073100A (fr) 1972-10-24 1978-10-30 Dispositif de focalisation dynamique de lentille d'objectif de lecteur de disque video

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00299893A US3829622A (en) 1972-10-24 1972-10-24 Video disc player with variably biased pneumatic head
CA314,703A CA1073100A (fr) 1972-10-24 1978-10-30 Dispositif de focalisation dynamique de lentille d'objectif de lecteur de disque video

Publications (1)

Publication Number Publication Date
CA1073100A true CA1073100A (fr) 1980-03-04

Family

ID=25668807

Family Applications (1)

Application Number Title Priority Date Filing Date
CA314,703A Expired CA1073100A (fr) 1972-10-24 1978-10-30 Dispositif de focalisation dynamique de lentille d'objectif de lecteur de disque video

Country Status (1)

Country Link
CA (1) CA1073100A (fr)

Similar Documents

Publication Publication Date Title
US3829622A (en) Video disc player with variably biased pneumatic head
US3944727A (en) Video disc player with movable mirror for directing light beam onto reflective disc
US4809247A (en) Video disc head tracking apparatus
US4451913A (en) Video disc read back scanner
US4282598A (en) Video disc read back scanner
CA2025311C (fr) Tete optique
US4703467A (en) Video disc read back scanner
US5140572A (en) Optical pickup device having fixed and movable optical systems
JPS61160845A (ja) 光デイスクの記録再生装置
US4977552A (en) Split type optical pick-up device with a tracking error detector on the moving part
US5235574A (en) Optical disk drive relative position sensor
US5172356A (en) Separation type optical pickup device
US6449225B1 (en) Method and apparatus for reading multiple tracks of an optical disk
CA1073100A (fr) Dispositif de focalisation dynamique de lentille d'objectif de lecteur de disque video
US4853917A (en) Optical tracking apparatus with photodetector disposed outside part of the effective diameter of the lens system
CA1071768A (fr) Trajet de faisceau lumineux pour lecture de disque video
CA1070834A (fr) Tourne-disque video
CA1066413A (fr) Dispositif de lecture de disque video
CA1066412A (fr) Dispositif de guidage de faisceau a miroir double pour systeme de lecture de video-disques
KR840001861B1 (ko) 비데오 디스크 플레이어
HU208587B (en) Method for tracking an optical scanner on the track of a data carrier and optical scanner performing said method
GB1458030A (en) Superconductors
CA1069215A (fr) Dispositif de lecture a faisceau lumineux pour disque video
JP3006987B2 (ja) 光ピックアップ
JP2700575B2 (ja) 光ピックアップ装置

Legal Events

Date Code Title Description
MKEX Expiry