JPS5911540U - squelch circuit - Google Patents

squelch circuit

Info

Publication number
JPS5911540U
JPS5911540U JP10576482U JP10576482U JPS5911540U JP S5911540 U JPS5911540 U JP S5911540U JP 10576482 U JP10576482 U JP 10576482U JP 10576482 U JP10576482 U JP 10576482U JP S5911540 U JPS5911540 U JP S5911540U
Authority
JP
Japan
Prior art keywords
squelch circuit
circuit
output signal
noise
analog switch
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.)
Granted
Application number
JP10576482U
Other languages
Japanese (ja)
Other versions
JPS6314501Y2 (en
Inventor
笠井　義彦
Original Assignee
日本電気株式会社
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 日本電気株式会社 filed Critical 日本電気株式会社
Priority to JP10576482U priority Critical patent/JPS5911540U/en
Publication of JPS5911540U publication Critical patent/JPS5911540U/en
Application granted granted Critical
Publication of JPS6314501Y2 publication Critical patent/JPS6314501Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • 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 the drawing]

第１図は従来のスケルチ回路を用いた受信装置のブロッ
ク図、第２図は本考案によるスケルチ回路を用いた受信
装置のブロック図である。 １・・・アンテナ、２・・・受信機、３・・・ノイズス
ケルチ回路、４・・・トーンスケルチ回路、５・・・ア
ンド回路、６・・・第１のアナログスイッチ、７・・・
増幅回路、８・・・スピーカ、９・・・第２のアナログ
スイッチ。FIG. 1 is a block diagram of a receiving device using a conventional squelch circuit, and FIG. 2 is a block diagram of a receiving device using a squelch circuit according to the present invention. DESCRIPTION OF SYMBOLS 1... Antenna, 2... Receiver, 3... Noise squelch circuit, 4... Tone squelch circuit, 5... AND circuit, 6... First analog switch, 7...
Amplifier circuit, 8... Speaker, 9... Second analog switch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 受信機の復調信号ノイズレベルが一定レベル以下になっ
たとき動作し、出力信号を発するノイズスケルチ回路と
、前記ノイズスケルチ回路の出力信号によりオンとなる
第２のアナログスイッチと、前記オンとなった第２のア
ナログスイッチを介して受信機の復調信号を受け、その
復調信号中の所定のトーンの存在により動作し、出力信
号を発するトーンスケルチ回路と、前記ノイズスケルチ
回路とトーンスケルチ回路の出力信号を入力とするアン
ド回路と、前記アンド回路の出力信号によりオンになり
、受信機の復調信号を音声再生回路に接続する第１のア
ナログスイッチとから構成したスケルチ回路。a noise squelch circuit that operates when the demodulated signal noise level of the receiver becomes below a certain level and emits an output signal; a second analog switch that is turned on by the output signal of the noise squelch circuit; A tone squelch circuit receives a demodulated signal from the receiver via a second analog switch, operates based on the presence of a predetermined tone in the demodulated signal, and generates an output signal, and inputs the output signals of the noise squelch circuit and the tone squelch circuit. and a first analog switch that is turned on by the output signal of the AND circuit and connects the demodulated signal of the receiver to the audio reproduction circuit.
JP10576482U 1982-07-13 1982-07-13 squelch circuit Granted JPS5911540U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10576482U JPS5911540U (en) 1982-07-13 1982-07-13 squelch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10576482U JPS5911540U (en) 1982-07-13 1982-07-13 squelch circuit

Publications (2)

Publication Number Publication Date
JPS5911540U true JPS5911540U (en) 1984-01-24
JPS6314501Y2 JPS6314501Y2 (en) 1988-04-22

Family

ID=30247772

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10576482U Granted JPS5911540U (en) 1982-07-13 1982-07-13 squelch circuit

Country Status (1)

Country Link
JP (1) JPS5911540U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01100537U (en) * 1987-12-25 1989-07-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01100537U (en) * 1987-12-25 1989-07-06

Also Published As

Publication number Publication date
JPS6314501Y2 (en) 1988-04-22

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