AU5175590A – Switchover circuit for the optical-scanning device of an optical recording and/or playing device
– Google Patents
AU5175590A – Switchover circuit for the optical-scanning device of an optical recording and/or playing device
– Google Patents
Switchover circuit for the optical-scanning device of an optical recording and/or playing device
Info
Publication number
AU5175590A
AU5175590A
AU51755/90A
AU5175590A
AU5175590A
AU 5175590 A
AU5175590 A
AU 5175590A
AU 51755/90 A
AU51755/90 A
AU 51755/90A
AU 5175590 A
AU5175590 A
AU 5175590A
AU 5175590 A
AU5175590 A
AU 5175590A
Authority
AU
Australia
Prior art keywords
optical
switchover circuit
optical recording
scanning device
playing device
Prior art date
1989-04-08
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.)
Abandoned
Application number
AU51755/90A
Inventor
Christian Buchler
Friedhelm Zucker
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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.)
1989-04-08
Filing date
1990-03-03
Publication date
1990-11-05
1989-04-08
Priority claimed from DE3911525A
external-priority
patent/DE3911525A1/en
1990-03-03
Application filed by Deutsche Thomson Brandt GmbH
filed
Critical
Deutsche Thomson Brandt GmbH
1990-11-05
Publication of AU5175590A
publication
Critical
patent/AU5175590A/en
Status
Abandoned
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
G11B7/0945—Methods for initialising servos, start-up sequences
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
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
G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
AU51755/90A
1989-04-08
1990-03-03
Switchover circuit for the optical-scanning device of an optical recording and/or playing device
Abandoned
AU5175590A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
DE3911525A
DE3911525A1
(en)
1988-11-17
1989-04-08
Circuit for detecting the type of an optical recording carrier
DE3911525
1989-04-08
Publications (1)
Publication Number
Publication Date
AU5175590A
true
AU5175590A
(en)
1990-11-05
Family
ID=6378223
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
AU51755/90A
Abandoned
AU5175590A
(en)
1989-04-08
1990-03-03
Switchover circuit for the optical-scanning device of an optical recording and/or playing device
Country Status (4)
Country
Link
KR
(1)
KR920700446A
(en)
CN
(1)
CN1046239A
(en)
AU
(1)
AU5175590A
(en)
WO
(1)
WO1990012394A1
(en)
Families Citing this family (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US5255262A
(en)
*
1991-06-04
1993-10-19
International Business Machines Corporation
Multiple data surface optical data storage system with transmissive data surfaces
US5452284A
(en)
*
1992-09-14
1995-09-19
Matsushita Electric Industrial Co., Ltd.
Optical recording/reproducing medium and apparatus using land and groove encoded information signals and identification signals including position information
1990
1990-03-03
KR
KR1019900702587A
patent/KR920700446A/en
not_active
Application Discontinuation
1990-03-03
WO
PCT/EP1990/000360
patent/WO1990012394A1/en
unknown
1990-03-03
AU
AU51755/90A
patent/AU5175590A/en
not_active
Abandoned
1990-04-07
CN
CN90101993A
patent/CN1046239A/en
active
Pending
Also Published As
Publication number
Publication date
KR920700446A
(en)
1992-02-19
CN1046239A
(en)
1990-10-17
WO1990012394A1
(en)
1990-10-18
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