JPH0438191U - - Google Patents
Info
- Publication number
- JPH0438191U JPH0438191U JP7933190U JP7933190U JPH0438191U JP H0438191 U JPH0438191 U JP H0438191U JP 7933190 U JP7933190 U JP 7933190U JP 7933190 U JP7933190 U JP 7933190U JP H0438191 U JPH0438191 U JP H0438191U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- output
- frequency divider
- changeover switch
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Color Television Image Signal Generators (AREA)
- Processing Of Color Television Signals (AREA)
Description
第１図は、この考案によるビデオ信号発生回路
の一実施例を示す構成ブロツク図、第２図は、第
１図におけるビデオ信号波形図、第３図は第１図
の実施例で得られるビデオ信号を入力したときの
Ｙ／Ｃ分離回路の各部信号波形図、第４図はＹ／
Ｃ分離回路を構成するくし形フイルタの一例を示
すブロツク図、第５図は第４図のＹ／Ｃ分離回路
における各部信号波形図である。
１……パターンジエネレータ、２，１１……反
転増幅器、３……切替スイツチ、４……分周器、
５……スイツチ、６，１２，１３……混合器（加
算器）、７……遅延回路、８，９……可変ボリユ
ーム、１０……増幅器。
FIG. 1 is a configuration block diagram showing an embodiment of a video signal generation circuit according to this invention, FIG. 2 is a video signal waveform diagram in FIG. 1, and FIG. 3 is a video signal generation circuit obtained by the embodiment of FIG. 1. Figure 4 is a signal waveform diagram of each part of the Y/C separation circuit when a signal is input.
FIG. 5 is a block diagram showing an example of a comb filter constituting the C separation circuit, and FIG. 5 is a signal waveform diagram of each part in the Y/C separation circuit of FIG. 1... Pattern generator, 2, 11... Inverting amplifier, 3... Selector switch, 4... Frequency divider,
5... Switch, 6, 12, 13... Mixer (adder), 7... Delay circuit, 8, 9... Variable volume, 10... Amplifier.
Claims (1)
信号の反転信号を他入力とし、制御信号により交
互に前記２つの入力を出力する切替スイツチ回路
と、 水平同期信号を1/2分周する分周回路と、 前記分周器の出力をＯＮ／ＯＦＦし、その出力
を前記制御信号として前記切替スイツチに供給す
るスイツチ回路と、 前記切替スイツチ回路の出力と前記カラー信号
以外のビデオ信号とを混合、加算する混合回路と
、を備えて成ることを特徴とするビデオ信号発生
回路。[Claims for Utility Model Registration] A changeover switch circuit which inputs a color signal and takes an inverted signal of the color signal as another input, and alternately outputs the two inputs according to a control signal; a frequency divider circuit that divides the frequency by 2; a switch circuit that turns ON/OFF the output of the frequency divider and supplies the output to the changeover switch as the control signal; A video signal generation circuit comprising: a mixing circuit that mixes and adds video signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7933190U JPH0438191U (en) | 1990-07-27 | 1990-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7933190U JPH0438191U (en) | 1990-07-27 | 1990-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0438191U true JPH0438191U (en) | 1992-03-31 |
Family
ID=31623394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7933190U Pending JPH0438191U (en) | 1990-07-27 | 1990-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438191U (en) |
-
1990
- 1990-07-27 JP JP7933190U patent/JPH0438191U/ja active Pending
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