JPS6237466U - - Google Patents

Info

Publication number
JPS6237466U
JPS6237466U JP12841885U JP12841885U JPS6237466U JP S6237466 U JPS6237466 U JP S6237466U JP 12841885 U JP12841885 U JP 12841885U JP 12841885 U JP12841885 U JP 12841885U JP S6237466 U JPS6237466 U JP S6237466U
Authority
JP
Japan
Prior art keywords
response
detection circuit
signals
signal detection
telephone line
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
JP12841885U
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 JP12841885U priority Critical patent/JPS6237466U/ja
Publication of JPS6237466U publication Critical patent/JPS6237466U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Description

【図面の簡単な説明】
第１図はこの考案の実施例である電話回線応答
信号検出回路の構成ブロツク図、第２図は第１図
中の要部信号波形図、第３図は従来の電話回線応
答信号検出回路の構成ブロツク図、第４図は第３
図の要部信号波形図である。 ５……論理積回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 電話回線の各種応答信号の中から必要な異なつ
    た応答信号を複数検出しそれぞれの応答検出信号
    を出力する応答信号検出回路を備えた電話回路応
    答信号検出回路であつて、 該応答信号検出回路より出力された異なつた複
    数の応答検出信号同士の論理積を算出しそれぞれ
    の応答信号を出力する論理積回路を複数個備える
    ことによつて、外部雑音を除去し応答信号のみを
    出力することを特徴とする電話回線応答信号検出
    回路。
JP12841885U 1985-08-23 1985-08-23 Pending JPS6237466U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12841885U JPS6237466U (ja) 1985-08-23 1985-08-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12841885U JPS6237466U (ja) 1985-08-23 1985-08-23

Publications (1)

Publication Number Publication Date
JPS6237466U true JPS6237466U (ja) 1987-03-05

Family

ID=31024067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12841885U Pending JPS6237466U (ja) 1985-08-23 1985-08-23

Country Status (1)

Country Link
JP (1) JPS6237466U (ja)

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