JPS60112155U - Automatic brightness adjustment circuit - Google Patents

Automatic brightness adjustment circuit

Info

Publication number
JPS60112155U
JPS60112155U JP5384U JP5384U JPS60112155U JP S60112155 U JPS60112155 U JP S60112155U JP 5384 U JP5384 U JP 5384U JP 5384 U JP5384 U JP 5384U JP S60112155 U JPS60112155 U JP S60112155U
Authority
JP
Japan
Prior art keywords
primary color
outputs
circuit
color signals
brightness adjustment
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
Application number
JP5384U
Other languages
Japanese (ja)
Other versions
JPH0342786Y2 (en
Inventor
修 佐藤
Original Assignee
株式会社東芝
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社東芝 filed Critical 株式会社東芝
Priority to JP5384U priority Critical patent/JPS60112155U/en
Publication of JPS60112155U publication Critical patent/JPS60112155U/en
Application granted granted Critical
Publication of JPH0342786Y2 publication Critical patent/JPH0342786Y2/ja
Granted legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は映像信号の波形図、第２図は本考案の一実施例
に係る自動輝度調整回路の回路ブロック図、第３図は本
考案の自動輝度調整回路の一部を構成するＡＰＬ検出回
路の回路構成図、第４図は上記ＡＰＬ検出回路の動作を
説明するための映像信号の波形図である。 ４・・・・・・Ｒ映像信号、５・・・・・・Ｇ映像信号
、６・・・・・・Ｂ映像信号、？、　　８．９・・・・
・・映像信号処理回路、１０・・・・・・ＥＲ原色信号
、１１・・・・・・Ｅｏ原色信号、１２・・・・・・Ｅ
８原色信号、１３，１４．１５・・・・・・クランプ回
路、１６・・・・・・マトリックス回路、１７・・・・
・・輝度信号、１８・・・・・・ＡＰＬ検出回路、１９
・・・・・・直流電位、２０・・・・・・輝度調整され
たＥＲ原色信号、２１・・・・・・輝度調整されたＥＣ
原色信号、２２・・・・・・輝度調整されたＥＢ原色信
号。 １ｋ「−一−デｒ　１　　　　　　°−１−１−１ｉFig. 1 is a waveform diagram of a video signal, Fig. 2 is a circuit block diagram of an automatic brightness adjustment circuit according to an embodiment of the present invention, and Fig. 3 is an APL detection forming part of the automatic brightness adjustment circuit of the present invention. FIG. 4 is a circuit configuration diagram of the circuit, and is a waveform diagram of a video signal for explaining the operation of the APL detection circuit. 4...R video signal, 5...G video signal, 6...B video signal, ? , 8.9...
...Video signal processing circuit, 10...ER primary color signal, 11...Eo primary color signal, 12...E
8 primary color signals, 13, 14.15... Clamp circuit, 16... Matrix circuit, 17...
...Brightness signal, 18...APL detection circuit, 19
...DC potential, 20... ER primary color signal with brightness adjustment, 21... EC with brightness adjustment
Primary color signal, 22... EB primary color signal whose brightness has been adjusted. 1k "-1-der 1 °-1-1-1i

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 独立したＲ、Ｇ、Ｂ映像信号をそれぞれ入力としＥＲ９
ＥＣ９ＥＢ原色信号を各々出力する映像信号処理回路と
、前記ＥＲ９Ｅｃ、ＥＢ原色信号より輝度信号を合成し
出力するマトリックス回路と、前記輝度信号の信号平均
レベルに応じた直流電位を出力するＡＰＬ検出回路と、
前記直流電位をクランプ電位の基準電位とし前記ＥＲ９
Ｅｏ、ＥＢ原色信号をそれぞれクランプすることにより
輝度調整されたＥＲ，Ｅ、、ＥＢ原色信号を各々出力す
る′　　　クランプ回路とを有するこ走を特徴とする自
動輝度調整回路。ER9 with independent R, G, and B video signals as inputs.
A video signal processing circuit that outputs each of the EC9EB primary color signals, a matrix circuit that synthesizes and outputs a luminance signal from the ER9Ec and EB primary color signals, and an APL detection circuit that outputs a DC potential according to the signal average level of the luminance signal. ,
The DC potential is used as a reference potential of the clamp potential, and the ER9
An automatic brightness adjustment circuit characterized in that it has a clamp circuit that outputs ER, E, and EB primary color signals whose brightness is adjusted by clamping the Eo and EB primary color signals, respectively.
JP5384U 1984-01-05 1984-01-05 Automatic brightness adjustment circuit Granted JPS60112155U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5384U JPS60112155U (en) 1984-01-05 1984-01-05 Automatic brightness adjustment circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5384U JPS60112155U (en) 1984-01-05 1984-01-05 Automatic brightness adjustment circuit

Publications (2)

Publication Number Publication Date
JPS60112155U true JPS60112155U (en) 1985-07-30
JPH0342786Y2 JPH0342786Y2 (en) 1991-09-06

Family

ID=30471587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5384U Granted JPS60112155U (en) 1984-01-05 1984-01-05 Automatic brightness adjustment circuit

Country Status (1)

Country Link
JP (1) JPS60112155U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62266979A (en) * 1986-05-08 1987-11-19 アールシーエー　トムソン　ライセンシング　コーポレイシヨン Brightness controller
JPH01256281A (en) * 1988-03-17 1989-10-12 Samsung Electron Co Ltd Automaster pedestal regulator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5012702A (en) * 1973-04-09 1975-02-10
JPS5554064U (en) * 1978-10-06 1980-04-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5012702A (en) * 1973-04-09 1975-02-10
JPS5554064U (en) * 1978-10-06 1980-04-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62266979A (en) * 1986-05-08 1987-11-19 アールシーエー　トムソン　ライセンシング　コーポレイシヨン Brightness controller
JPH01256281A (en) * 1988-03-17 1989-10-12 Samsung Electron Co Ltd Automaster pedestal regulator

Also Published As

Publication number Publication date
JPH0342786Y2 (en) 1991-09-06

Similar Documents

Publication Publication Date Title
JPS60112155U (en) Automatic brightness adjustment circuit
JPS5823479U (en) Signal processing circuit for line sequential imaging signals
JPS5871269U (en) automotive gain control circuit
JPS59140581U (en) television receiver
JPS59152870U (en) television receiver
JPS6135486U (en) Color television camera control device
JPS609388U (en) Hue adjustment circuit in PAL color television receiver
JPS60186765U (en) Video sync signal expander
JPS606382U (en) Pseudo color signal cancellation circuit for single tube color television camera
JPS62119075U (en)
JPS58152059U (en) Switching signal generation circuit
JPS60144361U (en) image display device
JPS5871284U (en) Color signal processing circuit
JPS6023890U (en) signal processing circuit
JPH02103985U (en)
JPS5890775U (en) Pattern signal forming circuit
JPS58123674U (en) blanking circuit
JPS6045570U (en) Automatic contrast correction circuit
JPS59111368U (en) television receiver
JPS615066U (en) Video display device
JPS6027500U (en) pattern recognition device
JPS5984968U (en) Automatic quality adjustment circuit
JPS60118968U (en) Oscilloscope with checking function
JPS60186775U (en) Video signal amplification circuit
JPS5984974U (en) video tape recorder