JPH0286285U - - Google Patents
Info
- Publication number
- JPH0286285U JPH0286285U JP16455688U JP16455688U JPH0286285U JP H0286285 U JPH0286285 U JP H0286285U JP 16455688 U JP16455688 U JP 16455688U JP 16455688 U JP16455688 U JP 16455688U JP H0286285 U JPH0286285 U JP H0286285U
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- control circuit
- amplification factor
- input video
- amplifier
- 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
- 230000003321 amplification Effects 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Television Receiver Circuits (AREA)
Description
図面はこの考案の一実施例を示すもので、第１
図は概略構成を示すブロツク図、第２図は第１図
のコンパレータ・可変減衰器による入出力特性を
示す図、第３図は第１図の具体的な回路構成を例
示する図である。
１１……ＤＣクランプ回路、１２……ビデオア
ンプ、１３……コンパレータ・可変減衰器、１４
……折線増幅器、１５……自動レベルコントロー
ル回路。
The drawing shows one embodiment of this invention.
2 is a block diagram showing a schematic configuration, FIG. 2 is a diagram showing input/output characteristics of the comparator/variable attenuator of FIG. 1, and FIG. 3 is a diagram illustrating a specific circuit configuration of FIG. 1. 11...DC clamp circuit, 12...Video amplifier, 13...Comparator/variable attenuator, 14
. . . Linear amplifier, 15 . . . Automatic level control circuit.
Claims (1)
びそのポイントの上下レベルでの各増幅率をそれ
ぞれ任意に設定可能な折線増幅器と、 入力されるビデオ信号をクランプして上記折線
増幅器に供給するＤＣクランプ回路と、 上記折線増幅器の出力するビデオ信号を所定の
振幅に制御して出力する自動レベルコントロール
回路と を具備したことを特徴とする階調コントロール
回路。[Scope of Claim for Utility Model Registration] A polygonal amplifier in which the amplification factor change point of an input video signal and each amplification factor at the upper and lower levels of that point can be set arbitrarily, and the above-mentioned method by clamping the input video signal. A gradation control circuit comprising: a DC clamp circuit that supplies a linear amplifier; and an automatic level control circuit that controls a video signal output from the linear amplifier to a predetermined amplitude and outputs the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16455688U JPH0286285U (en) | 1988-12-20 | 1988-12-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16455688U JPH0286285U (en) | 1988-12-20 | 1988-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0286285U true JPH0286285U (en) | 1990-07-09 |
Family
ID=31450269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16455688U Pending JPH0286285U (en) | 1988-12-20 | 1988-12-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0286285U (en) |
-
1988
- 1988-12-20 JP JP16455688U patent/JPH0286285U/ja active Pending
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