JPS6478007A - Fm demodulation circuit - Google Patents

Fm demodulation circuit

Info

Publication number
JPS6478007A
JPS6478007A JP62235150A JP23515087A JPS6478007A JP S6478007 A JPS6478007 A JP S6478007A JP 62235150 A JP62235150 A JP 62235150A JP 23515087 A JP23515087 A JP 23515087A JP S6478007 A JPS6478007 A JP S6478007A
Authority
JP
Japan
Prior art keywords
frequency
carrier frequency
characteristic
moire
picture quality
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
JP62235150A
Other languages
Japanese (ja)
Inventor
Masahiro Honjo
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 JP62235150A priority Critical patent/JPS6478007A/en
Publication of JPS6478007A publication Critical patent/JPS6478007A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To reduce deterioration in picture quality due to a moire component by performing FM demodulation after displacing amplitude relation between an FM carrier frequency and an FM sideband wave. CONSTITUTION:An FM modulation signal with an FM carrier frequency fc is inputted to a frequency characteristic displacement circuit 4 having the characteristic of a band-pass filter whose amplitude characteristic is attenuated according to the separation of the frequency from the carrier frequency fc, and the output of the frequency characteristic displacement circuit 4 is FM-demodulated by a demodulator 5. In such a way, it is possible to attenuate the moire component generated in a demodulation signal remarkably, and to reduce the deterioration in the picture quality due to a moire, and furthermore, to set the FM carrier frequency at a level lower than ever.
JP62235150A 1987-09-18 1987-09-18 Fm demodulation circuit Pending JPS6478007A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62235150A JPS6478007A (en) 1987-09-18 1987-09-18 Fm demodulation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62235150A JPS6478007A (en) 1987-09-18 1987-09-18 Fm demodulation circuit

Publications (1)

Publication Number Publication Date
JPS6478007A true JPS6478007A (en) 1989-03-23

Family

ID=16981791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62235150A Pending JPS6478007A (en) 1987-09-18 1987-09-18 Fm demodulation circuit

Country Status (1)

Country Link
JP (1) JPS6478007A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996017470A1 (en) * 1994-12-02 1996-06-06 International Business Machines Corporation Cathode ray tube display apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996017470A1 (en) * 1994-12-02 1996-06-06 International Business Machines Corporation Cathode ray tube display apparatus

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