JPS5522254A - Record disk reproducing device - Google Patents

Record disk reproducing device

Info

Publication number
JPS5522254A
JPS5522254A JP9433178A JP9433178A JPS5522254A JP S5522254 A JPS5522254 A JP S5522254A JP 9433178 A JP9433178 A JP 9433178A JP 9433178 A JP9433178 A JP 9433178A JP S5522254 A JPS5522254 A JP S5522254A
Authority
JP
Japan
Prior art keywords
spring
needle
disk
resistance change
gauge
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
JP9433178A
Other languages
Japanese (ja)
Inventor
Kenji Sato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9433178A priority Critical patent/JPS5522254A/en
Publication of JPS5522254A publication Critical patent/JPS5522254A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the signals of a fixed level by correcting the fluctuation of the reproduced signals caused by the drift of the pressure of the information detector needle with the resistance change of the distortion gauge.
CONSTITUTION: Distortion gauge 10 is stuck to spring 9 as spring 4 functioning as the needle pressure decision factor connected to information detector needle 3 to take out the information record and with contact to the groove of record disk 5. Otherwise spring 11 itself is formed with the distortion gauge. In this case, distance x between the disk varying the change of the groove unevenness and fulcrum of spring 4 is detected as the resistance change via gauge 10 when needle 3 slides on grooves of disk 5. Then the resistance change is amplified by amplifier 13 and through bridge circuit 12, and the unsteady reproduced signals due to the fluctuation of distance x and supplied from point (b) are controlled by amplifier 14. Thus the amplitude of the FM wave can be made constant.
COPYRIGHT: (C)1980,JPO&Japio
JP9433178A 1978-08-02 1978-08-02 Record disk reproducing device Pending JPS5522254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9433178A JPS5522254A (en) 1978-08-02 1978-08-02 Record disk reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9433178A JPS5522254A (en) 1978-08-02 1978-08-02 Record disk reproducing device

Publications (1)

Publication Number Publication Date
JPS5522254A true JPS5522254A (en) 1980-02-16

Family

ID=14107293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9433178A Pending JPS5522254A (en) 1978-08-02 1978-08-02 Record disk reproducing device

Country Status (1)

Country Link
JP (1) JPS5522254A (en)

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