JPH0379768B2 - - Google Patents

Info

Publication number
JPH0379768B2
JPH0379768B2 JP20438282A JP20438282A JPH0379768B2 JP H0379768 B2 JPH0379768 B2 JP H0379768B2 JP 20438282 A JP20438282 A JP 20438282A JP 20438282 A JP20438282 A JP 20438282A JP H0379768 B2 JPH0379768 B2 JP H0379768B2
Authority
JP
Japan
Prior art keywords
level
signal
information
section
tracking
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
JP20438282A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5994248A (ja
Inventor
Kazuhiko Fujiie
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP20438282A priority Critical patent/JPS5994248A/ja
Priority to US06/550,540 priority patent/US4587644A/en
Priority to DE19833340712 priority patent/DE3340712A1/de
Priority to FR8317951A priority patent/FR2536196B1/fr
Priority to CA000440877A priority patent/CA1212764A/en
Priority to KR8305351A priority patent/KR910006657B1/ko
Priority to GB08330108A priority patent/GB2132388B/en
Publication of JPS5994248A publication Critical patent/JPS5994248A/ja
Publication of JPH0379768B2 publication Critical patent/JPH0379768B2/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
    • 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
    • G11B7/0948—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 detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP20438282A 1982-11-11 1982-11-19 情報再生装置のサ−ボコントロ−ル回路 Granted JPS5994248A (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP20438282A JPS5994248A (ja) 1982-11-19 1982-11-19 情報再生装置のサ−ボコントロ−ル回路
US06/550,540 US4587644A (en) 1982-11-11 1983-11-10 Tracking servocontrol circuits for reducing gain to avoid tracking defect in an optical reproducing apparatus
DE19833340712 DE3340712A1 (de) 1982-11-11 1983-11-10 Spurhalteschaltung fuer optische wiedergabegeraete
FR8317951A FR2536196B1 (fr) 1982-11-11 1983-11-10 Circuit de servocommande d'alignement destine a un appareil de reproduction optique
CA000440877A CA1212764A (en) 1982-11-11 1983-11-10 Tracking servocontrol circuits for use in an optical reproducing apparatus
KR8305351A KR910006657B1 (en) 1982-11-11 1983-11-11 Servo control circuitry of information player
GB08330108A GB2132388B (en) 1982-11-11 1983-11-11 Tracking servocontrol circuits for use in optical reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20438282A JPS5994248A (ja) 1982-11-19 1982-11-19 情報再生装置のサ−ボコントロ−ル回路

Publications (2)

Publication Number Publication Date
JPS5994248A JPS5994248A (ja) 1984-05-30
JPH0379768B2 true JPH0379768B2 (en, 2012) 1991-12-19

Family

ID=16489599

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20438282A Granted JPS5994248A (ja) 1982-11-11 1982-11-19 情報再生装置のサ−ボコントロ−ル回路

Country Status (1)

Country Link
JP (1) JPS5994248A (en, 2012)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2590889B2 (ja) * 1987-06-30 1997-03-12 松下電器産業株式会社 トラッキング制御装置

Also Published As

Publication number Publication date
JPS5994248A (ja) 1984-05-30

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