JPS5483721A - Automatic regulator for tri-color luminance of color television - Google Patents
Automatic regulator for tri-color luminance of color televisionInfo
- Publication number
- JPS5483721A JPS5483721A JP15120877A JP15120877A JPS5483721A JP S5483721 A JPS5483721 A JP S5483721A JP 15120877 A JP15120877 A JP 15120877A JP 15120877 A JP15120877 A JP 15120877A JP S5483721 A JPS5483721 A JP S5483721A
- Authority
- JP
- Japan
- Prior art keywords
- color
- luminance
- tri
- output
- regulator
- 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
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
PURPOSE: To automize the tri-color adjustment of a color cathode-ray tube by providing an automatic luminance regulator.
CONSTITUTION: Screen luminance signal 7, the output of an ITV camera picture- taking the screen luminance of a color cathode-ray tube is supplied to buffer amplifier 11 of automatic regulator 3 for tri-color luminance. The output of amplifier 11 is compared with upper and lower-limit set levels by level comparators 16 and 17 of tri-color regulator circuits 12, 13 and 14 for red, green and blue colors. A positive rotary signal with the detection above the upper limit level or negative rotary signal with it below the lower limit level is supplied to pulse motor driver circuit 21 via gate 20. Depending upon the output of driver circuit 21, pulse motor 22 rotates positively or negatively to rotate adjustment volume 5, thereby adjusting a luminance current flowing to transistor 6.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15120877A JPS5483721A (en) | 1977-12-17 | 1977-12-17 | Automatic regulator for tri-color luminance of color television |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15120877A JPS5483721A (en) | 1977-12-17 | 1977-12-17 | Automatic regulator for tri-color luminance of color television |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5483721A true JPS5483721A (en) | 1979-07-04 |
Family
ID=15513590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15120877A Pending JPS5483721A (en) | 1977-12-17 | 1977-12-17 | Automatic regulator for tri-color luminance of color television |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5483721A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0385990A (en) * | 1989-08-30 | 1991-04-11 | Pioneer Electron Corp | Picture quality adjustment system and picture quality adjusting device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5171729A (en) * | 1974-12-19 | 1976-06-21 | Matsushita Electric Ind Co Ltd | HOWAITOBARANSUCHOSEISOCHI |
-
1977
- 1977-12-17 JP JP15120877A patent/JPS5483721A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5171729A (en) * | 1974-12-19 | 1976-06-21 | Matsushita Electric Ind Co Ltd | HOWAITOBARANSUCHOSEISOCHI |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0385990A (en) * | 1989-08-30 | 1991-04-11 | Pioneer Electron Corp | Picture quality adjustment system and picture quality adjusting device |
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