JPS5478013A - Screen position detector - Google Patents
Screen position detectorInfo
- Publication number
- JPS5478013A JPS5478013A JP14495577A JP14495577A JPS5478013A JP S5478013 A JPS5478013 A JP S5478013A JP 14495577 A JP14495577 A JP 14495577A JP 14495577 A JP14495577 A JP 14495577A JP S5478013 A JPS5478013 A JP S5478013A
- Authority
- JP
- Japan
- Prior art keywords
- white
- receiver
- horizontal
- screen
- signal
- 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
- Details Of Television Scanning (AREA)
Abstract
PURPOSE:To automatize quantitative measurement at a production time and improve precision by using a black-and-white TV camera to pick up the screen of a receiver and comparing left and right size marker signal positions with each other in respect to time. CONSTITUTION:White signal 5, which projects white raster throughout the available picture area, and signals 6 and 7, which project horizontal and vertical size markers in horizontal and vertical symmetrical positions in respect to the center of horizontal and vertical scanning periods respectively, are supplied to adjusted TV receiver 10 while being switched to pick up the screen by black-and-white TV camera 11. Then, times corresponding to the available picture area and size marker positions in picked-up output waveforms are measured by 16 to operate the time difference corresponding to the distance in 17, and the difference signal is outputted to detect the screen position by 20. Then, the difference signal is used to drive screen position adjustment mechanism 18 of receiver 10, thereby controlling so that the difference signal may be zero.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14495577A JPS5478013A (en) | 1977-12-05 | 1977-12-05 | Screen position detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14495577A JPS5478013A (en) | 1977-12-05 | 1977-12-05 | Screen position detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5478013A true JPS5478013A (en) | 1979-06-21 |
Family
ID=15374070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14495577A Pending JPS5478013A (en) | 1977-12-05 | 1977-12-05 | Screen position detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5478013A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008144748A (en) * | 2006-12-08 | 2008-06-26 | Taida Electronic Ind Co Ltd | Airflow rectifying device and serial fan |
-
1977
- 1977-12-05 JP JP14495577A patent/JPS5478013A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008144748A (en) * | 2006-12-08 | 2008-06-26 | Taida Electronic Ind Co Ltd | Airflow rectifying device and serial fan |
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