JPS5782213A - Demodulating system for fm video signal - Google Patents

Demodulating system for fm video signal

Info

Publication number
JPS5782213A
JPS5782213A JP55158475A JP15847580A JPS5782213A JP S5782213 A JPS5782213 A JP S5782213A JP 55158475 A JP55158475 A JP 55158475A JP 15847580 A JP15847580 A JP 15847580A JP S5782213 A JPS5782213 A JP S5782213A
Authority
JP
Japan
Prior art keywords
signal
frequency
circuit
beat
inputted
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
JP55158475A
Other languages
Japanese (ja)
Inventor
Keigo Okano
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP55158475A priority Critical patent/JPS5782213A/en
Publication of JPS5782213A publication Critical patent/JPS5782213A/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • G11B20/06—Angle-modulation recording or reproducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To achieve excellent video quality without beat, by constituting the system with a circuit frequency-multiplying an FM signal, filter circuit picking up fundamental wave component from the multiplied FM signal, and circuit frequency-detecting said filter circuit output signal. CONSTITUTION:An FM signal obtained from a reproducing amplifier is inputted to a frequency multiplier 23 and after converted into n-times (where; n is an integer, n>=3) the carrier frequency of the FM signal, it is applied to a band-pass filter 24, where only n-times frequency signals pass, and this passing signal is inputted to a frequency detector 25. After demodulation at said frequency detector 25, the signal is applied to a low-pass filter 26 and a video signal is obtained. Thus, unnecessary carrier component, side band or its harmonic components are all attenuated, no beat is produced and the video quality of reproduction with excellent S/N can be achieved.
JP55158475A 1980-11-11 1980-11-11 Demodulating system for fm video signal Pending JPS5782213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55158475A JPS5782213A (en) 1980-11-11 1980-11-11 Demodulating system for fm video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55158475A JPS5782213A (en) 1980-11-11 1980-11-11 Demodulating system for fm video signal

Publications (1)

Publication Number Publication Date
JPS5782213A true JPS5782213A (en) 1982-05-22

Family

ID=15672547

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55158475A Pending JPS5782213A (en) 1980-11-11 1980-11-11 Demodulating system for fm video signal

Country Status (1)

Country Link
JP (1) JPS5782213A (en)

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