JPS55117702A - Record reproducing device - Google Patents

Record reproducing device

Info

Publication number
JPS55117702A
JPS55117702A JP2399279A JP2399279A JPS55117702A JP S55117702 A JPS55117702 A JP S55117702A JP 2399279 A JP2399279 A JP 2399279A JP 2399279 A JP2399279 A JP 2399279A JP S55117702 A JPS55117702 A JP S55117702A
Authority
JP
Japan
Prior art keywords
arm
wow
cartridge
displacement detecting
detecting method
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
JP2399279A
Other languages
Japanese (ja)
Inventor
Makoto Akiyama
Kazuyuki Nakamura
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 JP2399279A priority Critical patent/JPS55117702A/en
Publication of JPS55117702A publication Critical patent/JPS55117702A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce a wow effectively by providing a trace arm displacement detecting method and eccentric wow correcting method.
CONSTITUTION: Arm-base displacement detecting method 24 consisting of plate resistor 25, conductive brush 26 fixed to arm base 12, and DC power supply 27 is provided and connected to driving part 14 which puts tone arm 2 into y-directional motion through filter 28, phase shifter 29 and power amplifier 30. Consequently, eccentricity of record disk 1 moves cartridge 3 in the x direction according to the movement of a record sound groove to deflect tone arm 2 to the left and right, and motor 16 turns by the output of angle detector 15 to move arm base 12 nearly in phase with cartridge 3. At this time, the output of displacement detecting method 24 is converted into an AC signal, which is phase-shifted and amplified before being inputted to driving part 14, and consequently tone-arm cartridge 3 is brought under y-directional movement control to eliminate substantially movement caused by the frequency deviation of a reproduced signal, so that a wow will be canceled.
COPYRIGHT: (C)1980,JPO&Japio
JP2399279A 1979-02-28 1979-02-28 Record reproducing device Pending JPS55117702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2399279A JPS55117702A (en) 1979-02-28 1979-02-28 Record reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2399279A JPS55117702A (en) 1979-02-28 1979-02-28 Record reproducing device

Publications (1)

Publication Number Publication Date
JPS55117702A true JPS55117702A (en) 1980-09-10

Family

ID=12126067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2399279A Pending JPS55117702A (en) 1979-02-28 1979-02-28 Record reproducing device

Country Status (1)

Country Link
JP (1) JPS55117702A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0075923A2 (en) * 1981-09-28 1983-04-06 Matsushita Electric Industrial Co., Ltd. Apparatus for controlling linear tracking arm in record player

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0075923A2 (en) * 1981-09-28 1983-04-06 Matsushita Electric Industrial Co., Ltd. Apparatus for controlling linear tracking arm in record player

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