JPS6035654U - squelch circuit - Google Patents

squelch circuit

Info

Publication number
JPS6035654U
JPS6035654U JP1984100003U JP10000384U JPS6035654U JP S6035654 U JPS6035654 U JP S6035654U JP 1984100003 U JP1984100003 U JP 1984100003U JP 10000384 U JP10000384 U JP 10000384U JP S6035654 U JPS6035654 U JP S6035654U
Authority
JP
Japan
Prior art keywords
circuit
switching
amplifier
signal
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
JP1984100003U
Other languages
Japanese (ja)
Inventor
哲男 金子
卓 黒川
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 JP1984100003U priority Critical patent/JPS6035654U/en
Publication of JPS6035654U publication Critical patent/JPS6035654U/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]

第１図は本考案の一実施例を示すトーンスケルチ回路の
ブロック図、第２図は従来例を示すトーンスケルチ回路
のブロック図である。 ２：ディスクリミネータ、３：選択性増幅器、４：帰還
回路、５ニスイツチング回路、６：出力調整回路、７：
検波回路、１１：位相検出回路、１２ニスイツチング回
路。FIG. 1 is a block diagram of a tone squelch circuit showing an embodiment of the present invention, and FIG. 2 is a block diagram of a tone squelch circuit showing a conventional example. 2: Discriminator, 3: Selective amplifier, 4: Feedback circuit, 5 Niswitching circuit, 6: Output adjustment circuit, 7:
Detection circuit, 11: Phase detection circuit, 12 Niswitching circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 送信時のトーン信号発振器と受信時のトーン信号増幅器
を兼用する選択性増幅器を有し、帰還回路及び第１のス
イッチング回路を用いて前記発振器と前記増幅器との切
換えを行う回路において、前記選択性増幅器の後段に、
発振器動作時の出力信号の位相を検出する位相検出回路
と、送信から受信への切換時に、この切換信号と前記位
相検出回路の位相検出信号とのアンドをとる第２のスイ
ッチング回路を設け、この第２のスイッチング回路の出
力により前記第１のスイッチング回路の切換時点を制御
することを特徴とするスケルチ回路。In a circuit that has a selectivity amplifier that serves as a tone signal oscillator during transmission and a tone signal amplifier during reception, and switches between the oscillator and the amplifier using a feedback circuit and a first switching circuit, the selectivity After the amplifier,
A phase detection circuit for detecting the phase of the output signal when the oscillator is operating, and a second switching circuit that ANDs this switching signal and the phase detection signal of the phase detection circuit when switching from transmission to reception are provided. A squelch circuit characterized in that a switching point of the first switching circuit is controlled by an output of the second switching circuit.
JP1984100003U 1984-07-04 1984-07-04 squelch circuit Pending JPS6035654U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984100003U JPS6035654U (en) 1984-07-04 1984-07-04 squelch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984100003U JPS6035654U (en) 1984-07-04 1984-07-04 squelch circuit

Publications (1)

Publication Number Publication Date
JPS6035654U true JPS6035654U (en) 1985-03-12

Family

ID=30236756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984100003U Pending JPS6035654U (en) 1984-07-04 1984-07-04 squelch circuit

Country Status (1)

Country Link
JP (1) JPS6035654U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012080161A (en) * 2010-09-30 2012-04-19 Icom Inc Transmitter and computer program

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012080161A (en) * 2010-09-30 2012-04-19 Icom Inc Transmitter and computer program

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