JPS576443A - Recorder and reproducer - Google Patents

Recorder and reproducer

Info

Publication number
JPS576443A
JPS576443A JP8080380A JP8080380A JPS576443A JP S576443 A JPS576443 A JP S576443A JP 8080380 A JP8080380 A JP 8080380A JP 8080380 A JP8080380 A JP 8080380A JP S576443 A JPS576443 A JP S576443A
Authority
JP
Japan
Prior art keywords
jumping
control element
tracking control
generating circuit
shifting
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.)
Granted
Application number
JP8080380A
Other languages
Japanese (ja)
Other versions
JPS633380B2 (en
Inventor
Akira Ichinose
Noboru Wakami
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8080380A priority Critical patent/JPS576443A/en
Publication of JPS576443A publication Critical patent/JPS576443A/en
Publication of JPS633380B2 publication Critical patent/JPS633380B2/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
    • G11B7/085—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

Abstract

PURPOSE:To maintain stable tracking control, by moving a shifting table by a distance corresponding to the number of jumping operations, whenever the jumping operation by a tracking control element is finished. CONSTITUTION:An optical system containing a tracking control element 17 is fixed to a shifting table 100, and is formed so that it can be moved vertically against the tracking direction of a recording disk 7 by a motor 19. And, when a jumping command is inputted to a commanding circuit 26, the control element 17 is made to execute a jumping operation through a voltage generating circuit 27 and a driving circuit 16, subsequently the jumping operation is stopped by a signal of a stop pulse generating circuit 25, also said singal is provided to a shifting voltage generating circuit 20, and a shifting table 100 is moved by a distance corresponding to the number of jumping operations. Accordingly, even if jumping is repeated, deflection of the tracking control element 17 is not accumulated, and a stable control can be executed.
JP8080380A 1980-06-13 1980-06-13 Recorder and reproducer Granted JPS576443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8080380A JPS576443A (en) 1980-06-13 1980-06-13 Recorder and reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8080380A JPS576443A (en) 1980-06-13 1980-06-13 Recorder and reproducer

Publications (2)

Publication Number Publication Date
JPS576443A true JPS576443A (en) 1982-01-13
JPS633380B2 JPS633380B2 (en) 1988-01-23

Family

ID=13728617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8080380A Granted JPS576443A (en) 1980-06-13 1980-06-13 Recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS576443A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58188340A (en) * 1982-04-28 1983-11-02 Sony Corp Optical reproducer
JPS6090480A (en) * 1983-09-01 1985-05-21 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Disc recording carrier reader

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58188340A (en) * 1982-04-28 1983-11-02 Sony Corp Optical reproducer
JPH0411925B2 (en) * 1982-04-28 1992-03-03 Sony Corp
JPS6090480A (en) * 1983-09-01 1985-05-21 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Disc recording carrier reader

Also Published As

Publication number Publication date
JPS633380B2 (en) 1988-01-23

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