JPS5423322A - Automatic regulator for brightness of television screen - Google Patents
Automatic regulator for brightness of television screenInfo
- 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
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
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)
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 |
-
1977
- 1977-07-25 JP JP8835877A patent/JPS5423322A/en active Pending
Cited By (9)
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 |
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