JPS59114632U

JPS59114632U - Receiving machine

Info

Publication number: JPS59114632U
Application number: JP755183U
Authority: JP
Inventors: 増原　正美; 秀次川崎
Original assignee: 三洋電機株式会社
Priority date: 1983-01-20
Filing date: 1983-01-20
Publication date: 1984-08-02
Also published as: JPH028439Y2

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 the drawing]

図面はこの考案の受信機の１実施例を示し、第１図は要
部の結線図、第２図は第１図の上昇指令スイッチまたは
降下指令スイッチの操作とスキャン速度との関係を示す
タイミングチャートである。ＩＣ・・・ＰＬＬシンセイザ及びコントローラ用集積回
路、Ｑ・・・トランジスタ、Ｓｌ・・・選択スイッチ、
Ｓ２・・・上昇指令スイッチ、Ｓ３・・・降下指令スイ
ッチ、Ｓ４・・・充電阻止スイッチ、Ｔ・・・スキャン
発振用時定数回路、■・・・速度変更用時定数回路、Ｃ
２・・・充放電コンデンサ、Ｄ４・・・放電路用ダイオ
ード、Ｒ４・・・時定数抵抗。The drawings show one embodiment of the receiver of this invention, FIG. 1 is a wiring diagram of the main parts, and FIG. 2 is a timing diagram showing the relationship between the operation of the ascending command switch or descending command switch in FIG. 1 and the scanning speed. It is a chart. IC: PLL synthesizer and controller integrated circuit, Q: transistor, Sl: selection switch,
S2... Ascend command switch, S3... Descend command switch, S4... Charge blocking switch, T... Time constant circuit for scan oscillation, ■... Time constant circuit for speed change, C
2...Charge/discharge capacitor, D4...Discharge path diode, R4...Time constant resistor.

Claims

[Scope of utility model registration request]

A selection switch for automatic scan reception mode and manual scan reception mode, a command switch for outputting a command signal for raising and lowering the reception frequency, and a scan oscillation time constant circuit for setting the scan speed for both reception modes. When the automatic scan reception mode is selected, the scan reception at the scan speed is started by operating the command switch, and the scan reception is continued even after the command switch is operated, and when the manual scan reception mode is selected, the scan reception is continued at the scan speed. is a PLL synthesizer type receiver that performs the scan reception only during the operation period of the command switch,
A charging/discharging circuit for speed change comprising a capacitor charged by the command signal, a diode forming a discharge path for the capacitor after the command signal is cut off, and a charging/discharging circuit for speed change that is turned on when the potential of the capacitor is equal to or higher than a predetermined charging potential. a switch body that is held; a time constant element that is connected to the scan oscillation time constant circuit while the switch body is turned on and increases the scan speed; and a time constant element that increases the scan speed and charges the capacitor when the automatic scan reception mode is selected. A receiver provided with a charging prevention switch to prevent charging.