JPS5837241U - squelch circuit - Google Patents

squelch circuit

Info

Publication number
JPS5837241U
JPS5837241U JP1981130962U JP13096281U JPS5837241U JP S5837241 U JPS5837241 U JP S5837241U JP 1981130962 U JP1981130962 U JP 1981130962U JP 13096281 U JP13096281 U JP 13096281U JP S5837241 U JPS5837241 U JP S5837241U
Authority
JP
Japan
Prior art keywords
circuit
transistor
output
switching
tone
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
JP1981130962U
Other languages
Japanese (ja)
Inventor
正樹 大西
Original Assignee
日立電子株式会社
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 日立電子株式会社 filed Critical 日立電子株式会社
Priority to JP1981130962U priority Critical patent/JPS5837241U/en
Publication of JPS5837241U publication Critical patent/JPS5837241U/en
Pending legal-status Critical Current

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  • Transceivers (AREA)
  • Noise Elimination (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

図は本考案の一実施例を示すトーンスケルチ回路である
。 1:トーン検出回路、2. 7:トランジスタ、5:切
替スイッチ、9ニスイツチング回路。
The figure shows a tone squelch circuit showing one embodiment of the present invention. 1: Tone detection circuit, 2. 7: Transistor, 5: Selector switch, 9 Niswitching circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] トーン信号を検出するトーン検出回路と、このトーン検
出回路の出力によってス・イツチング動作する第1のト
ランジスタと、この第1のトランジスタの出力回路を切
替える切替スイッチと、この切替スイッチの一方の出力
回路に接続する音声出力信号のスイッチング回路と、前
記切替スイッチの他方の出力回路及び前記スイッチング
回路との間に設けた反転スイッチング動作する第2のト
ランジスタとで構成し、前記切替スイッチにより音声出
力信号の立上り時間の比を変えることなく、トーン信号
の有無による音声出力信号の接、断の動作を反転させる
ことを特徴とするスケルチ回路。
A tone detection circuit that detects a tone signal, a first transistor that performs a switching operation based on the output of the tone detection circuit, a changeover switch that changes over the output circuit of the first transistor, and an output circuit of one of the changeover switches. a switching circuit for the audio output signal connected to the switching circuit, and a second transistor that performs inverse switching operation and provided between the other output circuit of the changeover switch and the switching circuit, A squelch circuit is characterized in that it reverses the connection/disconnection of an audio output signal depending on the presence or absence of a tone signal without changing the rise time ratio.
JP1981130962U 1981-09-04 1981-09-04 squelch circuit Pending JPS5837241U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1981130962U JPS5837241U (en) 1981-09-04 1981-09-04 squelch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1981130962U JPS5837241U (en) 1981-09-04 1981-09-04 squelch circuit

Publications (1)

Publication Number Publication Date
JPS5837241U true JPS5837241U (en) 1983-03-10

Family

ID=29924564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1981130962U Pending JPS5837241U (en) 1981-09-04 1981-09-04 squelch circuit

Country Status (1)

Country Link
JP (1) JPS5837241U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62102341U (en) * 1985-12-19 1987-06-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62102341U (en) * 1985-12-19 1987-06-30

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