JPS51112224A - Signal frequency detection circuit - Google Patents

Signal frequency detection circuit

Info

Publication number
JPS51112224A
JPS51112224A JP50036760A JP3676075A JPS51112224A JP S51112224 A JPS51112224 A JP S51112224A JP 50036760 A JP50036760 A JP 50036760A JP 3676075 A JP3676075 A JP 3676075A JP S51112224 A JPS51112224 A JP S51112224A
Authority
JP
Japan
Prior art keywords
detection circuit
signal frequency
frequency detection
demultiplied
flop
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
JP50036760A
Other languages
Japanese (ja)
Inventor
Kojiro Sakurai
Naotoshi Yugawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50036760A priority Critical patent/JPS51112224A/en
Publication of JPS51112224A publication Critical patent/JPS51112224A/en
Pending legal-status Critical Current

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE: To obtain a signal frequency detection circuit in which an output of a limiter amplifier is demultiplied by a J/K flip-flop to narrow an indefinite region.
COPYRIGHT: (C)1976,JPO&Japio
JP50036760A 1975-03-28 1975-03-28 Signal frequency detection circuit Pending JPS51112224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50036760A JPS51112224A (en) 1975-03-28 1975-03-28 Signal frequency detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50036760A JPS51112224A (en) 1975-03-28 1975-03-28 Signal frequency detection circuit

Publications (1)

Publication Number Publication Date
JPS51112224A true JPS51112224A (en) 1976-10-04

Family

ID=12478694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50036760A Pending JPS51112224A (en) 1975-03-28 1975-03-28 Signal frequency detection circuit

Country Status (1)

Country Link
JP (1) JPS51112224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6072359A (en) * 1983-09-28 1985-04-24 Fujitsu Ltd Cd detecting system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6072359A (en) * 1983-09-28 1985-04-24 Fujitsu Ltd Cd detecting system

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