JPS61126672U - - Google Patents
Info
- Publication number
- JPS61126672U JPS61126672U JP888485U JP888485U JPS61126672U JP S61126672 U JPS61126672 U JP S61126672U JP 888485 U JP888485 U JP 888485U JP 888485 U JP888485 U JP 888485U JP S61126672 U JPS61126672 U JP S61126672U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- synchronization signal
- gain control
- video signal
- synchronization
- 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.)
- Pending
Links
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Description
第１図は、本考案の一実施例に係る同期信号圧
縮回路の電気的ブロツク図、第２図は同期信号の
振幅圧縮を説明する説明図、第３図は第１図に示
した可変利得回路の詳細な回路図、第４図は第３
図に加えられる信号とタイミングを示した図であ
る。
３……同期信号分離回路、５……パルス発生回
路、６……振幅変調器、７……可変利得増幅回路
、５０……同期信号圧縮回路。
FIG. 1 is an electrical block diagram of a synchronization signal compression circuit according to an embodiment of the present invention, FIG. 2 is an explanatory diagram illustrating amplitude compression of a synchronization signal, and FIG. 3 is a diagram showing the variable gain shown in FIG. Detailed circuit diagram of the circuit, Fig. 3
FIG. 3 is a diagram showing signals and timings added to the diagram. 3... Synchronization signal separation circuit, 5... Pulse generation circuit, 6... Amplitude modulator, 7... Variable gain amplifier circuit, 50... Synchronization signal compression circuit.
Claims (1)
し、該ビデオ信号を変調する変調手段を備えたテ
レビ送信機において、 前記ビデオ信号から同期信号を分離する同期信
号分離手段と、この分離された同期信号から同期
信号期間とそれ以外の期間でそれぞれ異なる利得
制御信号をつくりだす利得制御信号発生手段と、
前記変調手段より変調されたビデオ信号を入力す
るとともに前記利得制御信号発生手段より出力さ
れる利得制御信号に応じてこのビデオ信号の同期
信号部分を圧縮する可変利得手段とからなる同期
信号圧縮回路を備えたことを特徴とするテレビ送
信機。[Claims for Utility Model Registration] A television transmitter that receives a video signal consisting of a picture signal and a synchronization signal and is equipped with a modulation means for modulating the video signal, comprising a synchronization signal separation means for separating the synchronization signal from the video signal. and gain control signal generating means for generating different gain control signals for the synchronization signal period and other periods from the separated synchronization signal;
A synchronization signal compression circuit comprising variable gain means that inputs the video signal modulated by the modulation means and compresses a synchronization signal portion of the video signal in accordance with a gain control signal output from the gain control signal generation means. A television transmitter characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP888485U JPS61126672U (en) | 1985-01-25 | 1985-01-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP888485U JPS61126672U (en) | 1985-01-25 | 1985-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61126672U true JPS61126672U (en) | 1986-08-08 |
Family
ID=30488580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP888485U Pending JPS61126672U (en) | 1985-01-25 | 1985-01-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61126672U (en) |
-
1985
- 1985-01-25 JP JP888485U patent/JPS61126672U/ja active Pending
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