JPH0157851U - - Google Patents

Info

Publication number
JPH0157851U
JPH0157851U JP15357087U JP15357087U JPH0157851U JP H0157851 U JPH0157851 U JP H0157851U JP 15357087 U JP15357087 U JP 15357087U JP 15357087 U JP15357087 U JP 15357087U JP H0157851 U JPH0157851 U JP H0157851U
Authority
JP
Japan
Prior art keywords
pass filter
discriminated
switching
switch
time intervals
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
JP15357087U
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 JP15357087U priority Critical patent/JPH0157851U/ja
Publication of JPH0157851U publication Critical patent/JPH0157851U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
第1図は本考案の実施例を示すブロツク図であ
り、第2図は従来から用いられている装置のブロ
ツク図である。 1……クロツク発生器、2……分周器、3……
低域通過フイルター、4……高域通過フイルター
、5……レベル検出器。

Claims (1)

    【実用新案登録請求の範囲】
  1. 低域通過フイルターと高域通過フイルターとを
    有する電話回線を利用した双方向同時通信用多機
    能モデムにおいて、一定の時間間隔毎にスイツチ
    を切り換えることによつてキヤリア信号とコール
    プログレストーン信号とを弁別できることを特徴
    とする周波数弁別装置。
JP15357087U 1987-10-07 1987-10-07 Pending JPH0157851U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15357087U JPH0157851U (ja) 1987-10-07 1987-10-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15357087U JPH0157851U (ja) 1987-10-07 1987-10-07

Publications (1)

Publication Number Publication Date
JPH0157851U true JPH0157851U (ja) 1989-04-11

Family

ID=31429531

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15357087U Pending JPH0157851U (ja) 1987-10-07 1987-10-07

Country Status (1)

Country Link
JP (1) JPH0157851U (ja)

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