AU530869B2 - Video disc player - Google Patents

Video disc player

Info

Publication number
AU530869B2
AU530869B2 AU51235/79A AU5123579A AU530869B2 AU 530869 B2 AU530869 B2 AU 530869B2 AU 51235/79 A AU51235/79 A AU 51235/79A AU 5123579 A AU5123579 A AU 5123579A AU 530869 B2 AU530869 B2 AU 530869B2
Authority
AU
Australia
Prior art keywords
video disc
disc player
player
video
disc
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
AU51235/79A
Other versions
AU5123579A (en
Inventor
Ludwig Ceshkovsky
Wayne Ray Dakin
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
Discovision Associates
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
Application filed by Discovision Associates filed Critical Discovision Associates
Priority to AU51235/79A priority Critical patent/AU530869B2/en
Publication of AU5123579A publication Critical patent/AU5123579A/en
Application granted granted Critical
Publication of AU530869B2 publication Critical patent/AU530869B2/en
Anticipated expiration legal-status Critical
Expired legal-status Critical Current

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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • 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
AU51235/79A 1979-09-26 1979-09-26 Video disc player Expired AU530869B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU51235/79A AU530869B2 (en) 1979-09-26 1979-09-26 Video disc player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU51235/79A AU530869B2 (en) 1979-09-26 1979-09-26 Video disc player

Related Child Applications (4)

Application Number Title Priority Date Filing Date
AU13667/83A Division AU545091B2 (en) 1979-09-26 1983-04-19 Video time base error correction on optical disc
AU13668/83A Division AU544959B2 (en) 1979-09-26 1983-04-19 Video disc player
AU13669/83A Division AU545092B2 (en) 1978-03-27 1983-04-19 Video disc player
AU13666/83A Division AU544958B2 (en) 1979-09-26 1983-04-19 Video disc player

Publications (2)

Publication Number Publication Date
AU5123579A AU5123579A (en) 1981-04-02
AU530869B2 true AU530869B2 (en) 1983-08-04

Family

ID=3737691

Family Applications (1)

Application Number Title Priority Date Filing Date
AU51235/79A Expired AU530869B2 (en) 1979-09-26 1979-09-26 Video disc player

Country Status (1)

Country Link
AU (1) AU530869B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272873A2 (en) * 1986-12-15 1988-06-29 Sony Corporation Tracking servo systems for optical disc players
EP0349439A2 (en) * 1988-06-29 1990-01-03 Fujitsu Limited System for obtaining optimum focusing position in optical disc system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272873A2 (en) * 1986-12-15 1988-06-29 Sony Corporation Tracking servo systems for optical disc players
EP0272873A3 (en) * 1986-12-15 1989-10-04 Sony Corporation Tracking servo systems for optical disc players
EP0349439A2 (en) * 1988-06-29 1990-01-03 Fujitsu Limited System for obtaining optimum focusing position in optical disc system
EP0349439A3 (en) * 1988-06-29 1991-05-02 Fujitsu Limited System for obtaining optimum focusing position in optical disc system

Also Published As

Publication number Publication date
AU5123579A (en) 1981-04-02

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired