JPH0230641U

JPH0230641U -

Info

Publication number: JPH0230641U
Application number: JP6850989U
Authority: JP
Priority date: 1989-06-12
Filing date: 1989-06-12
Publication date: 1990-02-27

Description

[Brief explanation of the drawing]

第１図は本考案に係る短波受信装置用付属回路
の一実施例を示す電気結線図である。１…アンテナ、２…受信機本体、１００…付属
回路、１０１…シリアルインタフエース回路、１
０２…表示回路、１０３…記憶回路、１０４…電
池、１０５…ＭＰＵ（マイクロプロセツサ）、１
０６…電圧比較回路、１０７…タイマ回路、１０
８…可変抵抗器、１０９…デコーダ、１１０―１
，１１０―２…電子スイツチ、１１１…可変抵抗
器、１１２…起動／停止スイツチ、１１３…掃引
／走査用の双投スイツチ、１１４…チヤネルスイ
ツチ、１１５…プログラムスイツチ、１１６〜１
２５…テンキースイツチ、１２６…メモリ用スイ
ツチ、２００…リモートコントロールユニツト、
２０１…可変抵抗器、２０２〜２０４…双投スイ
ツチ。 FIG. 1 is an electrical wiring diagram showing an embodiment of an auxiliary circuit for a shortwave receiver according to the present invention. 1... Antenna, 2... Receiver body, 100... Attached circuit, 101... Serial interface circuit, 1
02...Display circuit, 103...Memory circuit, 104...Battery, 105...MPU (microprocessor), 1
06... Voltage comparison circuit, 107... Timer circuit, 10
8...Variable resistor, 109...Decoder, 110-1
, 110-2...Electronic switch, 111...Variable resistor, 112...Start/stop switch, 113...Double throw switch for sweep/scanning, 114...Channel switch, 115...Program switch, 116-1
25... Numerical key switch, 126... Memory switch, 200... Remote control unit,
201...variable resistor, 202-204...double throw switch.

Claims

[Claims for Utility Model Registration] (1) Serial device for exchanging reception frequency control data, radio wave type control data, and intermediate frequency band control data between a microprocessor and the receiver body in an auxiliary circuit for a shortwave receiver. an interface circuit, a voltage comparison circuit whose one input terminal is supplied with the AGC voltage from the receiver body and whose other input terminal is supplied with a reference voltage, and a variable resistor that allows the reference voltage to be manually set; It includes a timer circuit that outputs pulses of a required period, a display circuit, a memory circuit, a start/stop switch, a sweep/scan switch, a channel switch, a program switch that writes to the memory circuit, and a memory switch. During scanning reception, the data in the storage circuit is transferred to the receiver main body in synchronization with the pulse cycle output from the timer circuit according to a preprogrammed sequence, and the reception channels are switched one after another so that the AGC voltage becomes the reference. It is configured to stop scanning when the voltage exceeds the reference voltage, and furthermore, during sweep reception, the reception frequency is swept at a constant frequency interval between two preset frequencies, and when the AGC voltage exceeds the reference voltage. An accessory circuit for a shortwave receiver, characterized in that it is configured to stop sweeping. (2) Utility Model Registration In the accessory circuit for a shortwave receiver according to claim 1, the pulse period output from the timer circuit is adjustable with a manual variable resistor. circuit.