JPS6178485U - - Google Patents
Info
- Publication number
- JPS6178485U JPS6178485U JP16432384U JP16432384U JPS6178485U JP S6178485 U JPS6178485 U JP S6178485U JP 16432384 U JP16432384 U JP 16432384U JP 16432384 U JP16432384 U JP 16432384U JP S6178485 U JPS6178485 U JP S6178485U
- Authority
- JP
- Japan
- Prior art keywords
- average value
- white
- output
- brightness
- detects
- 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
- 230000001629 suppression Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は、この考案の自動輝度制限回路の一実
施例を示す回路構成図、第２図は、従来の自動輝
度制限回路の一例を示す回路構成図である。
１１…自動輝度制限装置、１２…自動輝度制限
回路、１３…白ピーク抑圧回路。
FIG. 1 is a circuit diagram showing an embodiment of the automatic brightness limiting circuit of this invention, and FIG. 2 is a circuit diagram showing an example of a conventional automatic brightness limiting circuit. 11... Automatic brightness limiting device, 12... Automatic brightness limiting circuit, 13... White peak suppression circuit.
Claims (1)
出し、その輝度平均値出力が一定値を越えるとき
に、コントラスト制御出力により画面のコントラ
ストを下げる平均値型の自動輝度制限回路と、映
像信号の白ピークを検出し、この白ピーク検出出
力と前記コントラスト制御出力を比較し、両出力
の差にもとづいて前記輝度平均値出力を実質上補
正し、白ピークを抑圧する白ピーク抑圧回路とを
設けてなる自動輝度制限装置。 An average value-type automatic brightness limiting circuit that detects the brightness average value from the beam current flowing through the picture tube and lowers the screen contrast using a contrast control output when the brightness average value output exceeds a certain value, and the video signal white a white peak suppression circuit that detects a peak, compares the white peak detection output with the contrast control output, substantially corrects the luminance average value output based on the difference between both outputs, and suppresses the white peak; Automatic brightness limiting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16432384U JPH0323735Y2 (en) | 1984-10-30 | 1984-10-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16432384U JPH0323735Y2 (en) | 1984-10-30 | 1984-10-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6178485U true JPS6178485U (en) | 1986-05-26 |
| JPH0323735Y2 JPH0323735Y2 (en) | 1991-05-23 |
Family
ID=30722185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16432384U Expired JPH0323735Y2 (en) | 1984-10-30 | 1984-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0323735Y2 (en) |
-
1984
- 1984-10-30 JP JP16432384U patent/JPH0323735Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0323735Y2 (en) | 1991-05-23 |
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