JPH0436370U - - Google Patents
Info
- Publication number
- JPH0436370U JPH0436370U JP7893190U JP7893190U JPH0436370U JP H0436370 U JPH0436370 U JP H0436370U JP 7893190 U JP7893190 U JP 7893190U JP 7893190 U JP7893190 U JP 7893190U JP H0436370 U JPH0436370 U JP H0436370U
- Authority
- JP
- Japan
- Prior art keywords
- current
- video signal
- variable
- crt
- cathode
- 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
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Description
第１図は本考案回路の一実施例の回路図、第２
図は従来の映像出力回路の一例を示す回路図、第
３図はカラーＣＲＴの光出力特性を示す図、第４
図は本考案一実施例に係る動作説明のための信号
波形図である。
１……増幅回路（増幅手段）、２……定電流源
回路（可変定電流源）、３……可変電流出力回路
（可変電流出力手段）、Ｖｃ２……電源電圧、Ｑ
６……トランジスタ、Ｃ２……コンデンサ、Ｒ８
……抵抗、Ｄ２……ダイオード。
Figure 1 is a circuit diagram of an embodiment of the circuit of the present invention, Figure 2 is a circuit diagram of an embodiment of the circuit of the present invention;
The figure is a circuit diagram showing an example of a conventional video output circuit, FIG. 3 is a diagram showing the light output characteristics of a color CRT, and FIG.
The figure is a signal waveform diagram for explaining the operation according to an embodiment of the present invention. 1... Amplification circuit (amplification means), 2... Constant current source circuit (variable constant current source), 3... Variable current output circuit (variable current output means), Vc 2 ... Power supply voltage, Q
6 ...Transistor, C2 ...Capacitor, R8
...Resistance, D2 ...Diode.
Claims (1)
に発生する可変定電流源と、電流を可変に出力す
る可変電流出力手段とを備え、前記可変定電流源
から発生される電流と前記可変電流出力手段から
出力される電流との電流差を増幅手段で増幅され
た映像信号に重畳してＣＲＴのカソードへと供給
する映像出力回路において、 エミツタがＣＲＴのカソードに接続されコレク
タに増幅手段で増幅された映像信号が接続される
トランジスタと、該トランジスタのベースと前記
可変定電流源に供給される電源電圧とを接続する
抵抗手段と、ＣＲＴのカソードと増幅手段で増幅
された映像信号を接続するコンデンサとを具備す
ることを特徴とする映像出力回路。[Claims for Utility Model Registration] A method comprising: an amplification means for amplifying a video signal; a variable constant current source for variably generating a constant current; and a variable current output means for variably outputting a current; In a video output circuit that superimposes the current difference between the generated current and the current output from the variable current output means on a video signal amplified by the amplification means and supplies the same to the cathode of the CRT, an emitter is connected to the cathode of the CRT. a transistor connected to the collector of which the video signal amplified by the amplification means is connected; a resistor means that connects the base of the transistor to the power supply voltage supplied to the variable constant current source; and a cathode of the CRT and the amplification means. A video output circuit comprising: a capacitor for connecting an amplified video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7893190U JP2505821Y2 (en) | 1990-07-24 | 1990-07-24 | Video output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7893190U JP2505821Y2 (en) | 1990-07-24 | 1990-07-24 | Video output circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0436370U true JPH0436370U (en) | 1992-03-26 |
| JP2505821Y2 JP2505821Y2 (en) | 1996-08-07 |
Family
ID=31622642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7893190U Expired - Lifetime JP2505821Y2 (en) | 1990-07-24 | 1990-07-24 | Video output circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2505821Y2 (en) |
-
1990
- 1990-07-24 JP JP7893190U patent/JP2505821Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2505821Y2 (en) | 1996-08-07 |