JPS60124166U

JPS60124166U - power saving supply device

Info

Publication number: JPS60124166U
Application number: JP1984011040U
Authority: JP
Inventors: 昭宣増子; 野田　康二; 三浦　澄; 小川　彰夫
Original assignee: 株式会社東芝
Priority date: 1984-01-31
Filing date: 1984-01-31
Publication date: 1985-08-21

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 the drawing]

第１図はケーブルテレビジョンシステムの概略を示す説
明図、第２図はケーブルテレビジョンシステムで使用さ
れる信号の周波数スペクトラムを示す説明図、第３図Ａ
１第３図Ｂ１第３図Ｃはこの考案の一実施例を示すもの
で、中央局、外部コントロールユニット、加入者処理ユ
ニットの回路図である。１１・・・中央局、１８・・・外部コントロールユニツ
ト、１９・・・引き込み線、２０・・・加入者処理ユニ
ット、３１・・・放送信号処理部、３２・・・送信器、
３４・・・データ処理装置、４３．６３・・・方向性結
合器、４５・・・分配器、５１・・・デジタル処理部、
５２，９３・・・変調器、５３．９２・・・復調器、５
６・・・電源回路、６２・・・コンだ一タチューナ、６
８・・・ラッチ回路、８９・・・テレビジョン受像機、
９４・・・マイクロコンピュータ、９７・・・リモート
コントロール送受信機、２００・・・スイッチ回路、２
０２，２０３゜２０４・・・整流回路。Figure 1 is an explanatory diagram showing the outline of a cable television system, Figure 2 is an explanatory diagram showing the frequency spectrum of a signal used in the cable television system, and Figure 3A.
1 FIG. 3 B1 FIG. 3 C shows an embodiment of this invention, and is a circuit diagram of a central office, an external control unit, and a subscriber processing unit. DESCRIPTION OF SYMBOLS 11... Central office, 18... External control unit, 19... Drop-in line, 20... Subscriber processing unit, 31... Broadcasting signal processing part, 32... Transmitter,
34... Data processing device, 43.63... Directional coupler, 45... Distributor, 51... Digital processing unit,
52,93...Modulator, 53.92...Demodulator, 5
6...Power supply circuit, 62...Conduit tuner, 6
8...Latch circuit, 89...Television receiver,
94...Microcomputer, 97...Remote control transmitter/receiver, 200...Switch circuit, 2
02,203°204... Rectifier circuit.

Claims

[Claims for Utility Model Registration] A cable through which a first FM signal obtained by frequency modulating an analog broadcast signal, a second FM signal obtained by frequency modulating forward data, and a television broadcast signal are transmitted from a central station; a first distributor into which the signal transmitted through the first directional coupler is input; and a first distributor connected to a distribution output terminal of the first distributor to receive the television broadcast signal. a converter tuner for channel conversion; a first terminal to which an output terminal of the converter tuner is connected via a second directional coupler; a demodulator for demodulating a modulated signal inputted to a terminal; - rectifying means connected to said first terminal for rectifying a replacement power source inputted to said first terminal; and a rectifying means for stabilizing the output of said rectifying means. a power supply circuit for generating power of various values, and a power supply from the power supply circuit is applied to an input terminal, and the power supply of the input terminal is changed in response to a power use command signal or a power off command signal applied to a control terminal. a switch circuit that turns on or off a power supply input terminal of the converter tuner; and a modulation signal that decodes the output data of the demodulator and inputs it to the first terminal is power-on information or power-off information. means for applying the power use command signal or power off command signal to the switch circuit in response to the switch circuit; one terminal is connected to the first terminal, and the other terminal is connected to a second terminal on the subscriber processing unit side. a television receiver connected to the second terminal; and detecting whether a power switch of the television receiver is turned on or off, and generating the power-on information or power-off information; A power-saving power supply device characterized by comprising: means for leading out to a second terminal.