JPS6365384U - - Google Patents
Info
- Publication number
- JPS6365384U JPS6365384U JP16024286U JP16024286U JPS6365384U JP S6365384 U JPS6365384 U JP S6365384U JP 16024286 U JP16024286 U JP 16024286U JP 16024286 U JP16024286 U JP 16024286U JP S6365384 U JPS6365384 U JP S6365384U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- video
- color
- signal
- emitter
- 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
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案のビデオ出力回路の一実施例を
示す回路図、第２図は色差信号入力対Ｒ，Ｇ，Ｂ
出力の関係を示す特性図、第３図はＹ入力対Ｒ，
Ｇ，Ｂ出力の関係を示す特性図、第４図は従来の
ビデオ出力回路の回路図である。
２…色復調回路、３…ビデオ回路、１４，１６
，１７，１８，２０，２２，２４，２６，２７，
２９，３１，３２，３３，３６…抵抗、１０，１
１，１２…ビデオ出力用トランジスタ、１３…輝
度側のトランジスタ、１５，１９…電源端子、２
１，２３，２５，２８，３０…可変抵抗、３５…
ツエナダイオード。
Figure 1 is a circuit diagram showing an embodiment of the video output circuit of the present invention, and Figure 2 is a color difference signal input pair R, G, B.
A characteristic diagram showing the relationship between outputs, Figure 3 shows Y input versus R,
FIG. 4, a characteristic diagram showing the relationship between G and B outputs, is a circuit diagram of a conventional video output circuit. 2... Color demodulation circuit, 3... Video circuit, 14, 16
,17,18,20,22,24,26,27,
29, 31, 32, 33, 36...Resistance, 10, 1
1, 12... Video output transistor, 13... Brightness side transistor, 15, 19... Power supply terminal, 2
1, 23, 25, 28, 30...variable resistor, 35...
Zena diode.
Claims (1)
処理して赤、緑、青三軸の色差信号を出力する色
復調回路と、 前記カラービデオ信号の輝度成分を増幅処理し
て輝度信号を出力するビデオ回路と、 このビデオ回路からの輝度信号をベースに供給
し、エミツタに輝度信号を得るためのエミツタフ
オロア回路と、 前記色復調回路からの各色差信号を各ベースに
供給し、前記エミツタフオロア回路からの輝度信
号を各エミツタに供給してマトリクスし、各コレ
クタに赤、緑、青の原色信号を得るための３つの
出力トランジスタと、 この出力トランジスタのうち、赤軸用出力トラ
ンジスタのベースと前記エミツタフオロア回路の
エミツタ間に接続され、前記色差信号および輝度
信号のレベルが所定値を越えたとき導通するツエ
ナダイオードを含み、前記赤軸用出力トランジス
タのゲインを調整するための手段とを具備したこ
とを特徴とするビデオ出力回路。[Claims for Utility Model Registration] A color demodulation circuit that demodulates the color components of a video-detected color video signal and outputs red, green, and blue triaxial color difference signals, and amplifies the luminance components of the color video signal. a video circuit that outputs a luminance signal from the video circuit, an emitter follower circuit that supplies the luminance signal from the video circuit to the base and obtains the luminance signal to the emitter, and supplies each color difference signal from the color demodulation circuit to each base. and three output transistors for supplying and matrixing the luminance signal from the emitter follower circuit to each emitter to obtain primary color signals of red, green, and blue to each collector; and among these output transistors, a red axis output Means for adjusting the gain of the red axis output transistor, including a Zener diode connected between the base of the transistor and the emitter of the emitter follower circuit and turned on when the levels of the color difference signal and the luminance signal exceed predetermined values. A video output circuit characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16024286U JPS6365384U (en) | 1986-10-20 | 1986-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16024286U JPS6365384U (en) | 1986-10-20 | 1986-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6365384U true JPS6365384U (en) | 1988-04-30 |
Family
ID=31085438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16024286U Pending JPS6365384U (en) | 1986-10-20 | 1986-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6365384U (en) |
-
1986
- 1986-10-20 JP JP16024286U patent/JPS6365384U/ja active Pending
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