JPH0230677U - - Google Patents
Info
- Publication number
- JPH0230677U JPH0230677U JP10844088U JP10844088U JPH0230677U JP H0230677 U JPH0230677 U JP H0230677U JP 10844088 U JP10844088 U JP 10844088U JP 10844088 U JP10844088 U JP 10844088U JP H0230677 U JPH0230677 U JP H0230677U
- Authority
- JP
- Japan
- Prior art keywords
- pedestal level
- brightness
- video signal
- surrounding environment
- changes
- 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
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案のテレビジヨン受像機の主要部
の回路構成図、第２図は動作説明用信号波形図、
第３図はカラーＴＶ画面の観視条件説明用輝度特
性図である。
１……テレビジヨン受像機、２……映像処理回
路、３……映像増幅回路、４……ペデスタルレベ
ルクランプ回路、５……ＣＲＴ、６……キヤビネ
ツト、７……開口部、Ｑ１……ＮＰＮトランジス
タ、Ｒ１……抵抗素子、Ｒ２……半固定抵抗、Ｒ
３〜Ｒ９……固定抵抗。
Fig. 1 is a circuit configuration diagram of the main parts of the television receiver of the present invention, Fig. 2 is a signal waveform diagram for explaining operation,
FIG. 3 is a luminance characteristic diagram for explaining the viewing conditions of a color TV screen. 1...Television receiver, 2...Video processing circuit, 3...Video amplification circuit, 4...Pedestal level clamp circuit, 5...CRT, 6...Cabinet, 7...Aperture, Q1 ... NPN transistor, R 1 ... resistance element, R 2 ... semi-fixed resistance, R
3 to R9 ...Fixed resistance.
Claims (1)
抗素子と、該抵抗素子と直列又は並列に抵抗を結
合し、一定電圧をブリーダ接続することによつて
、周囲光の照度に応じた電圧値を得る制御回路と
、該電圧値に応じて映像信号のペデスタルレベル
を変動するペデスタルレベルクランプ回路とを備
え、上記周囲環境の明るさに略比例て映像信号出
力のペデスタルレベルを自動的に変化させるよう
構成したことを特徴とするテレビジヨン受像機。 By combining a resistor element whose resistance value changes depending on the brightness of the surrounding environment, a resistor in series or parallel with the resistor element, and connecting a constant voltage to a bleeder, a voltage value corresponding to the illuminance of the ambient light can be generated. and a pedestal level clamp circuit that changes the pedestal level of the video signal according to the voltage value, and automatically changes the pedestal level of the video signal output approximately in proportion to the brightness of the surrounding environment. A television receiver characterized in that it is configured as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10844088U JPH0230677U (en) | 1988-08-18 | 1988-08-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10844088U JPH0230677U (en) | 1988-08-18 | 1988-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0230677U true JPH0230677U (en) | 1990-02-27 |
Family
ID=31343770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10844088U Pending JPH0230677U (en) | 1988-08-18 | 1988-08-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0230677U (en) |
-
1988
- 1988-08-18 JP JP10844088U patent/JPH0230677U/ja active Pending
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