JPS5736470A - Pickup arm shifting device of record disk reproducer - Google Patents

Pickup arm shifting device of record disk reproducer

Info

Publication number
JPS5736470A
JPS5736470A JP11173980A JP11173980A JPS5736470A JP S5736470 A JPS5736470 A JP S5736470A JP 11173980 A JP11173980 A JP 11173980A JP 11173980 A JP11173980 A JP 11173980A JP S5736470 A JPS5736470 A JP S5736470A
Authority
JP
Japan
Prior art keywords
pickup arm
shift
detected
shifting device
detector
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.)
Pending
Application number
JP11173980A
Other languages
Japanese (ja)
Inventor
Mikio Shiraishi
Masaya Kishi
Kichizaemon Okazaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11173980A priority Critical patent/JPS5736470A/en
Publication of JPS5736470A publication Critical patent/JPS5736470A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
    • G11B3/085—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using automatic means
    • G11B3/08503—Control of drive of the head
    • G11B3/08506—Control of drive of the head for pivoting pick-up arms
    • G11B3/08512—Control of drive of the head for pivoting pick-up arms using optical detecting means

Abstract

PURPOSE:To obtain two different levels of speed with a same mechanism, by detecting the extent of shift of a pickup arm and then controlling the shift. CONSTITUTION:When a rotation detecting plate 40 provided between a light emitting element 42 and a photodetector element 43 turns, the light of the element 42 reaches the detector 43 at the position of a cutoff 45. Thus the angle of rotation of a rotating shaft 44 is detected, and the electric signal is emitted. A rotation detecting part 46 works when a pickup arm 4 moves a prescribed distance or more, and the extent of shift the arm 4 is detected by the detector 43. Accordingly a detected signal A goes into a retrievable multivibrator 51 through a waveform shaping circuit 47 to stop an output D. As a result, a gate circuit 54 is stopped to stop a drive motor 28.
JP11173980A 1980-08-15 1980-08-15 Pickup arm shifting device of record disk reproducer Pending JPS5736470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11173980A JPS5736470A (en) 1980-08-15 1980-08-15 Pickup arm shifting device of record disk reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11173980A JPS5736470A (en) 1980-08-15 1980-08-15 Pickup arm shifting device of record disk reproducer

Publications (1)

Publication Number Publication Date
JPS5736470A true JPS5736470A (en) 1982-02-27

Family

ID=14568952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11173980A Pending JPS5736470A (en) 1980-08-15 1980-08-15 Pickup arm shifting device of record disk reproducer

Country Status (1)

Country Link
JP (1) JPS5736470A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013235629A (en) * 2012-05-07 2013-11-21 Fujitsu Ltd Library apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013235629A (en) * 2012-05-07 2013-11-21 Fujitsu Ltd Library apparatus

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