JPS58178751U

JPS58178751U - signal transmission equipment

Info

Publication number: JPS58178751U
Application number: JP1982076811U
Authority: JP
Inventors: 俊昭大谷
Original assignee: 日本電気株式会社
Priority date: 1982-05-25
Filing date: 1982-05-25
Publication date: 1983-11-30

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図は信号伝送装置の一般的な系統図、第２図は振幅
変調されたＦＭ被変調搬潜波の波形図、第３図は従来の
信号伝送方式９送信機の系統図で本考案の実施例にも使
用される。第４図は従来の信号伝送方式の受信機および
再放送用送信機の系統図、第５図は本考案の一実施例、
特に再放送用送信機の系統図、第６図は本考案に使用さ
れる位相変調補償器の一例を示す系統図。図において１・・・スタジオ、２・・・スタジオ側ＳＴ
°リンクの送信アンテナ、３・・・ＦＭ送信所、４・・
・ＦＭ送信所側ＳＴリンクの受信アンテナ、５・・・Ｆ
Ｍ送信所側の放送機用送信アンテナ、６・・・有線回線
、１１・・・振幅変調された周波数被変調搬送波波形、
１２・・・振幅変調波、１０１・・・プログラム信号入
力端子、１０２・・・周波数変調器、１０３・・・振幅
制限増幅器、１０４・・・振幅変調器、１０５・・・リ
モコン信号入力端子、２０１・・・周波数変換器、２０
２・・・−自動利得制御増幅器、２０３・・・振幅制限
器、２０４・・・分周又は逓倍器、２０５・・・周波数
変換器、２０６・・・電力増幅器、２０７・・・振幅復
調器、２０８・・・リモコン信号出力端子、２０９・・
・位相変調補償器、“３０１・・・分配器、３０２・・
・遅延線、３０゛３・・・位相変調器、３０４・・・バ
ンドパスフィルタ、３０５・・・検波器、３０６・・・
ローパスフィルタ。１＃２図　　−。Ｔ２　　　χＶ１中 ♀。＃−３閑うFigure 1 is a general system diagram of a signal transmission device, Figure 2 is a waveform diagram of an amplitude-modulated FM carrier wave, and Figure 3 is a diagram of a conventional signal transmission system 9 transmitter, which was invented by the present invention. Also used in the examples. Fig. 4 is a system diagram of a conventional signal transmission system receiver and rebroadcast transmitter, and Fig. 5 is an embodiment of the present invention.
In particular, a system diagram of a transmitter for rebroadcasting, and FIG. 6 is a system diagram showing an example of a phase modulation compensator used in the present invention. In the diagram, 1...Studio, 2...Studio side ST
° Link transmitting antenna, 3... FM transmitting station, 4...
・FM transmitting station side ST link receiving antenna, 5...F
Transmitting antenna for broadcasting machine on the M transmitting station side, 6... wired line, 11... frequency modulated carrier waveform that is amplitude modulated;
12... Amplitude modulated wave, 101... Program signal input terminal, 102... Frequency modulator, 103... Amplitude limiting amplifier, 104... Amplitude modulator, 105... Remote control signal input terminal, 201...frequency converter, 20
2... Automatic gain control amplifier, 203... Amplitude limiter, 204... Frequency divider or multiplier, 205... Frequency converter, 206... Power amplifier, 207... Amplitude demodulator , 208...Remote control signal output terminal, 209...
・Phase modulation compensator, "301...Distributor, 302...
・Delay line, 30゛3... Phase modulator, 304... Band pass filter, 305... Detector, 306...
low pass filter. 1 #2 Figure -. T2 χV 1 medium ♀. #-3 Quiet

Claims

[Scope of utility model registration request]

An amplitude demodulator that receives a modulated wave created by frequency-modulating a carrier wave with a first program signal and then amplitude-modulating it with a second program signal, the amplitude demodulator extracting a second program signal from the modulated wave. a phase modulator that modulates the phase of the modulated wave with a second program signal; an amplitude limiter that limits the amplitude of the output of the phase modulator; and a first program signal that converts the output of the amplitude limiter into a frequency. A signal transmission device comprising: means for retransmitting a program signal.