JPS6360449B2 - - Google Patents

Info

Publication number
JPS6360449B2
JPS6360449B2 JP55130942A JP13094280A JPS6360449B2 JP S6360449 B2 JPS6360449 B2 JP S6360449B2 JP 55130942 A JP55130942 A JP 55130942A JP 13094280 A JP13094280 A JP 13094280A JP S6360449 B2 JPS6360449 B2 JP S6360449B2
Authority
JP
Japan
Prior art keywords
track
light
light beam
information carrier
signal
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
JP55130942A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5755542A (en
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 filed Critical
Priority to JP13094280A priority Critical patent/JPS5755542A/ja
Priority to US06/301,420 priority patent/US4484319A/en
Priority to EP81107323A priority patent/EP0048441B1/de
Priority to DE8181107323T priority patent/DE3175265D1/de
Publication of JPS5755542A publication Critical patent/JPS5755542A/ja
Publication of JPS6360449B2 publication Critical patent/JPS6360449B2/ja
Granted 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
    • G11B7/09—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
    • G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—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 discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
    • 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
    • G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Automatic Focus Adjustment (AREA)
JP13094280A 1980-09-19 1980-09-19 Track retrieving device of optical information recorder and reproducer Granted JPS5755542A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP13094280A JPS5755542A (en) 1980-09-19 1980-09-19 Track retrieving device of optical information recorder and reproducer
US06/301,420 US4484319A (en) 1980-09-19 1981-09-11 Apparatus for locating a track on disc-like optical information carriers
EP81107323A EP0048441B1 (de) 1980-09-19 1981-09-16 Spursucheinrichtung für ein Gerät zur optischen Informationsaufzeichnung und- wiedergabe
DE8181107323T DE3175265D1 (en) 1980-09-19 1981-09-16 Track searching arrangement for an optical information recording and reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13094280A JPS5755542A (en) 1980-09-19 1980-09-19 Track retrieving device of optical information recorder and reproducer

Publications (2)

Publication Number Publication Date
JPS5755542A JPS5755542A (en) 1982-04-02
JPS6360449B2 true JPS6360449B2 (de) 1988-11-24

Family

ID=15046271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13094280A Granted JPS5755542A (en) 1980-09-19 1980-09-19 Track retrieving device of optical information recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS5755542A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332708B1 (de) * 1987-08-29 1994-01-12 Fujitsu Limited Methoden zum zugang einer optischen aufzeichnungsspur
JP2600880B2 (ja) * 1987-08-29 1997-04-16 富士通株式会社 光記録トラックのアクセス方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5128720A (de) * 1974-09-04 1976-03-11 Mitsubishi Electric Corp
JPS51107015A (de) * 1975-03-17 1976-09-22 Hitachi Ltd

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5128720A (de) * 1974-09-04 1976-03-11 Mitsubishi Electric Corp
JPS51107015A (de) * 1975-03-17 1976-09-22 Hitachi Ltd

Also Published As

Publication number Publication date
JPS5755542A (en) 1982-04-02

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