JPH0370431U - - Google Patents

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Publication number
JPH0370431U
JPH0370431U JP13180189U JP13180189U JPH0370431U JP H0370431 U JPH0370431 U JP H0370431U JP 13180189 U JP13180189 U JP 13180189U JP 13180189 U JP13180189 U JP 13180189U JP H0370431 U JPH0370431 U JP H0370431U
Authority
JP
Japan
Prior art keywords
frequency
signal
vco
counter
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
JP13180189U
Other languages
English (en)
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 filed Critical
Priority to JP13180189U priority Critical patent/JPH0370431U/ja
Publication of JPH0370431U publication Critical patent/JPH0370431U/ja
Pending legal-status Critical Current

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  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Description

【図面の簡単な説明】
第1図は、本考案の一実施例を示す回路図、第
2図は、従来の周波数制御回路を示す回路図、第
3図イ乃至ハは、第2図の説明に供する為の波形
図、及び第4図イ乃至ハは、第1図の説明に供す
る為の波形図である。 1……VCO、3……スイツチ、4……カウン
タ、6……識別回路、9……1/2分周回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 中心周波数がm・fH(mは整数、fHは水平
    同期信号周波数)で発振するVCOと、 該VCOの発振出力信号をnH期間(nは整数
    、Hは水平同期信号の一周期)通過させるスイツ
    チと、 該スイツチからの信号を1/m・n分周するカ
    ウンタと、 該カウンタの出力信号を識別する識別回路とを
    備え、該識別回路の識別出力に応じて前記VCO
    の発振周波数を制御する周波数制御回路において
    、前記カウンタと前記識別回路との間に1/2分周
    回路を挿入し、周波数引き込み範囲を2倍にした
    ことを特徴とする周波数制御回路。
JP13180189U 1989-11-13 1989-11-13 Pending JPH0370431U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13180189U JPH0370431U (ja) 1989-11-13 1989-11-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13180189U JPH0370431U (ja) 1989-11-13 1989-11-13

Publications (1)

Publication Number Publication Date
JPH0370431U true JPH0370431U (ja) 1991-07-15

Family

ID=31679287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13180189U Pending JPH0370431U (ja) 1989-11-13 1989-11-13

Country Status (1)

Country Link
JP (1) JPH0370431U (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6441522A (en) * 1987-08-07 1989-02-13 Sharp Kk Phase locked loop circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6441522A (en) * 1987-08-07 1989-02-13 Sharp Kk Phase locked loop circuit

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