JPS5933355U

JPS5933355U - FM radio for vehicle

Info

Publication number: JPS5933355U
Application number: JP12818682U
Authority: JP
Inventors: 近藤　弘志
Original assignee: トヨタ自動車株式会社
Priority date: 1982-08-25
Filing date: 1982-08-25
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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の車両用ＦＭラジオの電気回路図、第２図
は本考案の車両用ＦＭラジオの好適な実施例を示す電気
回路図、第３図は本考案の他の実施例を示す電気回路図
である。２８・・・Ａ３０回路、３０・・・マルチパス雑音検出
部、３２・・・制御部、３４・・・フェージング雑音検
出部、３８・・・ノイズ検出回路、４２．４４・・・制
御部を構成するパルス山−電圧変換器、制御信号発生器
。FIG. 1 is an electric circuit diagram of a conventional vehicle FM radio, FIG. 2 is an electric circuit diagram showing a preferred embodiment of the vehicle FM radio of the present invention, and FIG. 3 is a diagram showing another embodiment of the present invention. It is an electrical circuit diagram. 28... A30 circuit, 30... Multipath noise detection unit, 32... Control unit, 34... Fading noise detection unit, 38... Noise detection circuit, 42.44... Control unit Consisting of pulse peak-voltage converter and control signal generator.

Claims

[Claim for Utility Model Registration] +1+Increase FM reception wave by 1] In a vehicle FM radio that detects a wave, further separates the channels of the detected output, reproduces the FM, and controls the degree of channel separation of the detected output using an A30 circuit, The A30 circuit includes a multipath noise detection unit that detects multipath noise from FM reception waves, and a control unit that controls the channel separation degree of the FM-detection output based on the detection output of the detection unit, and A vehicle F is characterized in that it prevents a decrease in the S/N ratio of the reproduced output due to the occurrence of
M radio. (2) In the FM radio according to claim (1), the A30 circuit has a fading noise detection section that detects fading noise from the FM reception wave, and based on the detection output of the fading noise detection section, the A30 circuit Vehicle F characterized by controlling channel separation of detection output
M radio. (3) Utility model registration In the FM radio according to either of claims (1) or (2), a noise detector used for detecting multipath noise in a diversity receiving system is used to detect multipath noise in an A30 circuit. An FM radio for a vehicle, characterized in that it is used as a part.