JPS58139768U - Television relay transmitter - Google Patents
Television relay transmitterInfo
- Publication number
- JPS58139768U JPS58139768U JP1982036179U JP3617982U JPS58139768U JP S58139768 U JPS58139768 U JP S58139768U JP 1982036179 U JP1982036179 U JP 1982036179U JP 3617982 U JP3617982 U JP 3617982U JP S58139768 U JPS58139768 U JP S58139768U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- output
- oscillation circuit
- television relay
- relay transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Details Of Television Systems (AREA)
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
第1図はマイクロウェーブを利用したテレビ中継放送シ
ステムの系統を示す図。第2図は従来の構成によるテレ
ビジョン中継送信装置の系統を示す図である。第3図は
第2図に示す局部発振器23の系統を示す図である。第
4図は本考案によるテレビジョン中継送信装置の系統を
示す図である。
第2図、第3図、第4図において、21・・・入力端子
、22・・・周波数変換回路、23・・・局部発振器、
24・・・中間周波増巾回路、25・・・周波数変換回
路、26・・・可変周波局部発振器、27・・・電力増
巾器、28・・・結合回路、29・・・出力端子、30
・・・映像搬送波抽出回路、31・・・位相比較回路、
32・・・基準周波数発振器、33・・・可変周波発振
器、34・・・出力端子、35・・・分周回路、36・
・・位相比較回路、37・・・基準周波数発振器、40
・・・局部発振器、41・・・可変周波基準発振器。FIG. 1 is a diagram showing the system of a television relay broadcasting system using microwaves. FIG. 2 is a diagram showing a system of a television relay transmitter having a conventional configuration. FIG. 3 is a diagram showing a system of the local oscillator 23 shown in FIG. 2. FIG. 4 is a diagram showing the system of the television relay transmitter according to the present invention. In FIG. 2, FIG. 3, and FIG. 4, 21...input terminal, 22...frequency conversion circuit, 23...local oscillator,
24... Intermediate frequency amplification circuit, 25... Frequency conversion circuit, 26... Variable frequency local oscillator, 27... Power amplifier, 28... Coupling circuit, 29... Output terminal, 30
...Video carrier wave extraction circuit, 31...Phase comparison circuit,
32... Reference frequency oscillator, 33... Variable frequency oscillator, 34... Output terminal, 35... Frequency dividing circuit, 36...
... Phase comparison circuit, 37 ... Reference frequency oscillator, 40
...Local oscillator, 41...Variable frequency reference oscillator.
Claims (1)
周波数を変換して出力するテレビジョン中継送信装置に
おいて、前記可変基準発振器が、出力変調波から搬送波
を抽出する手段と、基準周波数を発振する手段と、抽出
された搬送波と基準周波数とを位相比較する第一の位相
比較手段と、前記第一の位相比較手段からの出力に応じ
て発振周波数が制御される第一の発振回路と、前記第一
の発振回路出力に位相同期して複数種類の発振周波数を
出力する可変分周器を含む第二の発振回路とを具備する
ことを特徴とする。In a television relay transmitter that mixes an input modulated wave with an output from a variable reference oscillator, converts the carrier frequency, and outputs the mixture, the variable reference oscillator includes a means for extracting a carrier wave from the output modulated wave, and a means for oscillating the reference frequency. a first phase comparison means for phase comparing the extracted carrier wave and a reference frequency; a first oscillation circuit whose oscillation frequency is controlled according to the output from the first phase comparison means; It is characterized by comprising a second oscillation circuit including a variable frequency divider that outputs a plurality of types of oscillation frequencies in phase synchronization with the output of the first oscillation circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1982036179U JPS58139768U (en) | 1982-03-15 | 1982-03-15 | Television relay transmitter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1982036179U JPS58139768U (en) | 1982-03-15 | 1982-03-15 | Television relay transmitter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58139768U true JPS58139768U (en) | 1983-09-20 |
JPS6349961Y2 JPS6349961Y2 (en) | 1988-12-22 |
Family
ID=30047625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1982036179U Granted JPS58139768U (en) | 1982-03-15 | 1982-03-15 | Television relay transmitter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58139768U (en) |
-
1982
- 1982-03-15 JP JP1982036179U patent/JPS58139768U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6349961Y2 (en) | 1988-12-22 |
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