JPS5933344U

JPS5933344U - squelch device

Info

Publication number: JPS5933344U
Application number: JP12606082U
Authority: JP
Inventors: 秦　正明
Original assignee: 株式会社東芝
Priority date: 1982-08-23
Filing date: 1982-08-23
Publication date: 1984-03-01

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は、移動体に搭載された無線電話装置に現われる
フェージングを説明するための図、第２図は速度検出器
の特性図、第３図は本考案の一実施例を示すブロック図
、第４図は第３図に示された装置の動作を説明するため
の図である。２・・・検波器、３・・・低周波増幅器、４・・・スケ
ルチゲート、６・・・雑音増幅器、７・・・雑音検波器
、１５・・・速度検出器、１６・・・シュミット回路。FIG. 1 is a diagram for explaining fading that appears in a radio telephone device mounted on a mobile body, FIG. 2 is a characteristic diagram of a speed detector, and FIG. 3 is a block diagram showing an embodiment of the present invention. FIG. 4 is a diagram for explaining the operation of the apparatus shown in FIG. 3. 2... Detector, 3... Low frequency amplifier, 4... Squelch gate, 6... Noise amplifier, 7... Noise detector, 15... Speed detector, 16... Schmitt circuit.

Claims

[Scope of utility model registration request]

In a squelch device provided in a receiving section of a radio telephone device mounted on a mobile object, a variable release time circuit forms a squelch control signal with a variable release time from when a received signal becomes null to when the squelch closes; 1. A squelch device comprising: a speed detector that detects the speed of a moving object and controls a variable release time circuit based on the result; the squelch device changes the release time according to the speed of the moving object.