JPH0446738U - - Google Patents

Info

Publication number
JPH0446738U
JPH0446738U JP8993790U JP8993790U JPH0446738U JP H0446738 U JPH0446738 U JP H0446738U JP 8993790 U JP8993790 U JP 8993790U JP 8993790 U JP8993790 U JP 8993790U JP H0446738 U JPH0446738 U JP H0446738U
Authority
JP
Japan
Prior art keywords
output
frequency
input
circuit
oscillator
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
JP8993790U
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 JP8993790U priority Critical patent/JPH0446738U/ja
Publication of JPH0446738U publication Critical patent/JPH0446738U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Synchronisation In Digital Transmission Systems (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構成図、第2
図は従来のAISクロツク発生回路を示す構成図
である。 1……AISクロツク発生回路、2,7……位
相同期回路、3……入力断検出回路、4……発振
器、5……選択器、6……信号処理回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 入力及び出力クロツクの位相比較結果を電圧に
    変換しフイルタで平滑した後、電圧制御発振器の
    出力周波数を制御して、入力周波数に出力周波数
    を同期させる位相同期回路と、前記入力クロツク
    の断状態を検出しアラーム信号を送出する入力断
    検出回路と、出力クロツクを発生する発振器と、
    通常では前記位相同期回路の出力を選択し前記ア
    ラーム信号を受信したときには前記発振器の出力
    を選択し出力する選択器とを備えたことを特徴と
    するAISクロツク発生回路。
JP8993790U 1990-08-28 1990-08-28 Pending JPH0446738U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8993790U JPH0446738U (ja) 1990-08-28 1990-08-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8993790U JPH0446738U (ja) 1990-08-28 1990-08-28

Publications (1)

Publication Number Publication Date
JPH0446738U true JPH0446738U (ja) 1992-04-21

Family

ID=31824278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8993790U Pending JPH0446738U (ja) 1990-08-28 1990-08-28

Country Status (1)

Country Link
JP (1) JPH0446738U (ja)

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