JPS5423322A - Automatic regulator for brightness of television screen - Google Patents

Automatic regulator for brightness of television screen

Info

Publication number
JPS5423322A
JPS5423322A JP8835877A JP8835877A JPS5423322A JP S5423322 A JPS5423322 A JP S5423322A JP 8835877 A JP8835877 A JP 8835877A JP 8835877 A JP8835877 A JP 8835877A JP S5423322 A JPS5423322 A JP S5423322A
Authority
JP
Japan
Prior art keywords
brightness
television screen
automatic regulator
screen
amplifying
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
Application number
JP8835877A
Other languages
Japanese (ja)
Inventor
Mitsuzo Nakahata
Ikuo Kawaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8835877A priority Critical patent/JPS5423322A/en
Publication of JPS5423322A publication Critical patent/JPS5423322A/en
Pending legal-status Critical Current

Links

Landscapes

  • Closed-Circuit Television Systems (AREA)
  • Color Television Systems (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

PURPOSE: To simplify adjustment operations, and to make them efficient by comparing brightness at any point on a screen, extracted from an output signal of an ITV camera, with a fixed level and by adjusting screen brightness by a brightness adjustment volume after amplifying the difference output.
COPYRIGHT: (C)1979,JPO&Japio
JP8835877A 1977-07-25 1977-07-25 Automatic regulator for brightness of television screen Pending JPS5423322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8835877A JPS5423322A (en) 1977-07-25 1977-07-25 Automatic regulator for brightness of television screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8835877A JPS5423322A (en) 1977-07-25 1977-07-25 Automatic regulator for brightness of television screen

Publications (1)

Publication Number Publication Date
JPS5423322A true JPS5423322A (en) 1979-02-21

Family

ID=13940580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8835877A Pending JPS5423322A (en) 1977-07-25 1977-07-25 Automatic regulator for brightness of television screen

Country Status (1)

Country Link
JP (1) JPS5423322A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5851676A (en) * 1981-09-24 1983-03-26 Ikegami Tsushinki Co Ltd Shading compensation circuit
US4415921A (en) * 1981-10-30 1983-11-15 Nicolet Instrument Corporation Automatic calibration system for video displays in vision testing
JPS59109772A (en) * 1982-12-14 1984-06-25 新日本製鐵株式会社 Device for repairing inner surface of melten-metal carrier vessel
JPS61173590A (en) * 1985-01-29 1986-08-05 Fuji Photo Film Co Ltd Automatic calibrating circuit of monitor device
JPH0385990A (en) * 1989-08-30 1991-04-11 Pioneer Electron Corp Picture quality adjustment system and picture quality adjusting device
JPH04169825A (en) * 1990-11-01 1992-06-17 Matsushita Electric Ind Co Ltd Liquid-crystal-panel inspecting method
KR100439172B1 (en) * 2001-11-23 2004-07-05 한국전자통신연구원 Constant luminance control device of hdtv and method for generating and displaying same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5851676A (en) * 1981-09-24 1983-03-26 Ikegami Tsushinki Co Ltd Shading compensation circuit
US4415921A (en) * 1981-10-30 1983-11-15 Nicolet Instrument Corporation Automatic calibration system for video displays in vision testing
JPS59109772A (en) * 1982-12-14 1984-06-25 新日本製鐵株式会社 Device for repairing inner surface of melten-metal carrier vessel
JPS637320B2 (en) * 1982-12-14 1988-02-16 Shinnippon Seitetsu Kk
JPS61173590A (en) * 1985-01-29 1986-08-05 Fuji Photo Film Co Ltd Automatic calibrating circuit of monitor device
US4707739A (en) * 1985-01-29 1987-11-17 Fuji Photo Film Co., Ltd. Automatic calibration circuit for monitoring device
JPH0385990A (en) * 1989-08-30 1991-04-11 Pioneer Electron Corp Picture quality adjustment system and picture quality adjusting device
JPH04169825A (en) * 1990-11-01 1992-06-17 Matsushita Electric Ind Co Ltd Liquid-crystal-panel inspecting method
KR100439172B1 (en) * 2001-11-23 2004-07-05 한국전자통신연구원 Constant luminance control device of hdtv and method for generating and displaying same

Similar Documents

Publication Publication Date Title
JPS53106520A (en) Memory type gain controller
JPS52129273A (en) Indication device and method for beam landing
JPS5423322A (en) Automatic regulator for brightness of television screen
JPS5279729A (en) Color adjusting circuit of color television
JPS523331A (en) Automatic focusing adjuster of tv camera
JPS53143125A (en) Color control unit for color television receiver
JPS5436929A (en) Camera with automatic focus device
JPS5418232A (en) Chromakey tracking device
JPS5212517A (en) Binalizing device of video signal
JPS5356921A (en) Exposure control system for television caemra
JPS53112612A (en) Automatic phase adjusting system
JPS53126817A (en) Level controller of video signal
JPS5258416A (en) Focus voltage adjusting method
JPS51120608A (en) Tv transmission automatic gain control system
JPS5341683A (en) Sampling control system
JPS5336425A (en) Color television picture receiver of beam index time
JPS5431229A (en) Signal processor
JPS5396625A (en) Automatic astigmatism control system of color camera
JPS52104863A (en) Automatic contrast adjusting device for video signal
JPS53124022A (en) Automatic gain adjuster circuit
JPS5423427A (en) Beam index television picture receiver
JPS5348613A (en) Picture quality control circuit for video signal
JPS5439126A (en) Automatic focusing method
JPS5427319A (en) Automatic saturation degree control
JPS5437529A (en) Automatic regulator circuit for picture quality