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JPS56114138A - System and device for reproducing television signal - Google Patents

System and device for reproducing television signal

Info

Publication number
JPS56114138A
JPS56114138A JP1627480A JP1627480A JPS56114138A JP S56114138 A JPS56114138 A JP S56114138A JP 1627480 A JP1627480 A JP 1627480A JP 1627480 A JP1627480 A JP 1627480A JP S56114138 A JPS56114138 A JP S56114138A
Authority
JP
Japan
Prior art keywords
output
signal
disc
pickup
circuit
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
JP1627480A
Other languages
Japanese (ja)
Inventor
Kazuo Noda
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.)
FOSTER DENKI KK
Foster Electric Co Ltd
Original Assignee
FOSTER DENKI KK
Foster 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 FOSTER DENKI KK, Foster Electric Co Ltd filed Critical FOSTER DENKI KK
Priority to JP1627480A priority Critical patent/JPS56114138A/en
Publication of JPS56114138A publication Critical patent/JPS56114138A/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
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/06—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electrical capacitance; Record carriers therefor
    • G11B9/07—Heads for reproducing capacitive information

Abstract

PURPOSE:To floating the tip of the reproducing stylus from the disc surface very slightly to a degree, where C/N degradation of the signal taken out from the disc is no matter, by the action of the servo system to reproduce the TV signal. CONSTITUTION:The output of pickup 9 which detects the change of capacity 7 between disc 1 and reproducing stylus 6 is inputted to amplifier 10. The output of amplifying circuit 10 has the amplitude fixed by amplitude limiting citcuit 14 and is demodulated by demodulating circuit 15 and is taken out as a television signal at output terminal 16. Meanwhile, a part of the output from amplifier 10 is inputted to level detecting circuit 11, and the current is controlled on the basis of the output of citcuit 11 by currrent controlling circuit 12, and pickup 9 is driven by driving mechanism 13. In this case, stylus tip 8 is floated from disc 1 very slightly to form minute gap 17. Now, if signal groove 2 is recorded on disc 1 in the form of, for example, an FM wave, the FM wave which has the frequency and the modulation degree determined by the number of signal grooves and the length of signal grooves where metallic electrode 5 passes in the unit time is obtained as the output of pickup 9.
JP1627480A 1980-02-13 1980-02-13 System and device for reproducing television signal Pending JPS56114138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1627480A JPS56114138A (en) 1980-02-13 1980-02-13 System and device for reproducing television signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1627480A JPS56114138A (en) 1980-02-13 1980-02-13 System and device for reproducing television signal

Publications (1)

Publication Number Publication Date
JPS56114138A true JPS56114138A (en) 1981-09-08

Family

ID=11911961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1627480A Pending JPS56114138A (en) 1980-02-13 1980-02-13 System and device for reproducing television signal

Country Status (1)

Country Link
JP (1) JPS56114138A (en)

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