JPS5778645A - Pickup device - Google Patents

Pickup device

Info

Publication number
JPS5778645A
JPS5778645A JP15398480A JP15398480A JPS5778645A JP S5778645 A JPS5778645 A JP S5778645A JP 15398480 A JP15398480 A JP 15398480A JP 15398480 A JP15398480 A JP 15398480A JP S5778645 A JPS5778645 A JP S5778645A
Authority
JP
Japan
Prior art keywords
coils
axis
magnet
opposed
adjacent part
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
JP15398480A
Other languages
Japanese (ja)
Inventor
Satoru Kusaka
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 JP15398480A priority Critical patent/JPS5778645A/en
Priority to GB8131907A priority patent/GB2088646B/en
Priority to DE19813142106 priority patent/DE3142106A1/en
Priority to US06/314,738 priority patent/US4462096A/en
Priority to NL8104833A priority patent/NL8104833A/en
Priority to FR8120087A priority patent/FR2493017B1/en
Priority to CA000389672A priority patent/CA1165873A/en
Publication of JPS5778645A publication Critical patent/JPS5778645A/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
    • 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

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To suppress the resonance, by detecting the vibration of a moving part of an optical pickup, and feeding it back to a driving part. CONSTITUTION:As for 4 magnets, the same poles are opposed, and to the bobbin, 8 elliptical coils 21x, 21xc, 21y and 21yc are made to adhere in a state that their lengthwise directions have fallen at right angles with coils 21z, 21zc and also have been placed adjacently. Among 8 coils, the adjacent part of 4 coils is placed so as to be opposed to the magnet 5, and the adjacent part of other 4 coils is placed at a position separated from a magnetic path of the magnet 5. Accordingly, only a current flowing to the adjacent part side of the coils 21x, 21y contributes to movement of the moving part, a speed is detected by the coils 21xc, 21yc, and vibration in the (x) axis and the (y) axis is suppressed by the external circuit. Also, movement in the (z) axis is controlled by the coil 21z and the 21zc.
JP15398480A 1980-10-24 1980-10-31 Pickup device Pending JPS5778645A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP15398480A JPS5778645A (en) 1980-10-31 1980-10-31 Pickup device
GB8131907A GB2088646B (en) 1980-10-24 1981-10-22 Pick-up assemblies for disc players
DE19813142106 DE3142106A1 (en) 1980-10-24 1981-10-23 RECORDING ARRANGEMENT FOR TURNTABLE
US06/314,738 US4462096A (en) 1980-10-24 1981-10-23 Pickup assembly for disc player
NL8104833A NL8104833A (en) 1980-10-24 1981-10-26 READER FOR RECORD PLAYER.
FR8120087A FR2493017B1 (en) 1980-10-24 1981-10-26 READING ASSEMBLY FOR AN OPTICAL READING APPARATUS OF INFORMATION RECORDED ON A DISC IN THE FORM OF ONE OR MORE TRACKS
CA000389672A CA1165873A (en) 1980-10-24 1981-11-09 Pickup assembly for disc player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15398480A JPS5778645A (en) 1980-10-31 1980-10-31 Pickup device

Publications (1)

Publication Number Publication Date
JPS5778645A true JPS5778645A (en) 1982-05-17

Family

ID=15574359

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15398480A Pending JPS5778645A (en) 1980-10-24 1980-10-31 Pickup device

Country Status (1)

Country Link
JP (1) JPS5778645A (en)

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