JPS551667A - Display unit of needle tip position for record player - Google Patents

Display unit of needle tip position for record player

Info

Publication number
JPS551667A
JPS551667A JP7506878A JP7506878A JPS551667A JP S551667 A JPS551667 A JP S551667A JP 7506878 A JP7506878 A JP 7506878A JP 7506878 A JP7506878 A JP 7506878A JP S551667 A JPS551667 A JP S551667A
Authority
JP
Japan
Prior art keywords
revolution
turntable
needle tip
tip position
record disc
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
JP7506878A
Other languages
Japanese (ja)
Inventor
Tadashi Abe
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 JP7506878A priority Critical patent/JPS551667A/en
Publication of JPS551667A publication Critical patent/JPS551667A/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
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements

Abstract

PURPOSE:To enable correct needle tip position by decreasing the detection error of needle tip position due to the eccentricity of record disc, through the detection of amount of revolution of the pick up arm every one revolution of the turntable. CONSTITUTION:When the record disc 12 placed on the turntable 11 is traced with the pick up cartridge 13A, the photo receiver 16 derects the amount of light from the light emitter 15 passing through the slit 14A of the moving slit plate 14, and the output signal in which the level is changed every one revolution is picked up from the amplifier 17, because of the effect of the eccentricity of the record disc. On the other hand, the light from the light emitter 19 is received at the photo detector 20 via the reflection plate 18 every one revolution of the turntable 11, the pulse signal corresponding to every one revolution of the turntable 11 is picked up from the pulse generator 21. This signal is fed to the sample hold unit 22 to perform sample hold and the output signal from the amplifier 23 is rejected for the effect of the eccentricity of the record disc 12.
JP7506878A 1978-06-20 1978-06-20 Display unit of needle tip position for record player Pending JPS551667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7506878A JPS551667A (en) 1978-06-20 1978-06-20 Display unit of needle tip position for record player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7506878A JPS551667A (en) 1978-06-20 1978-06-20 Display unit of needle tip position for record player

Publications (1)

Publication Number Publication Date
JPS551667A true JPS551667A (en) 1980-01-08

Family

ID=13565503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7506878A Pending JPS551667A (en) 1978-06-20 1978-06-20 Display unit of needle tip position for record player

Country Status (1)

Country Link
JP (1) JPS551667A (en)

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