JPS52131767A - Frequency detector - Google Patents

Frequency detector

Info

Publication number
JPS52131767A
JPS52131767A JP4889876A JP4889876A JPS52131767A JP S52131767 A JPS52131767 A JP S52131767A JP 4889876 A JP4889876 A JP 4889876A JP 4889876 A JP4889876 A JP 4889876A JP S52131767 A JPS52131767 A JP S52131767A
Authority
JP
Japan
Prior art keywords
signal
frequency detector
demodulator
input signal
detecting
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
JP4889876A
Other languages
Japanese (ja)
Inventor
Koichi Noguchi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP4889876A priority Critical patent/JPS52131767A/en
Publication of JPS52131767A publication Critical patent/JPS52131767A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To permit detecting minute variations in the frequency of a signal from an input signal source except for ripples in the demodulator output signal, by demodulating the input signal in an FM demodulator and detecting the level of the demodulated signal after integration.
COPYRIGHT: (C)1977,JPO&Japio
JP4889876A 1976-04-28 1976-04-28 Frequency detector Pending JPS52131767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4889876A JPS52131767A (en) 1976-04-28 1976-04-28 Frequency detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4889876A JPS52131767A (en) 1976-04-28 1976-04-28 Frequency detector

Publications (1)

Publication Number Publication Date
JPS52131767A true JPS52131767A (en) 1977-11-04

Family

ID=12816075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4889876A Pending JPS52131767A (en) 1976-04-28 1976-04-28 Frequency detector

Country Status (1)

Country Link
JP (1) JPS52131767A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02192207A (en) * 1989-01-20 1990-07-30 Pioneer Electron Corp Fm detection circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02192207A (en) * 1989-01-20 1990-07-30 Pioneer Electron Corp Fm detection circuit

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