JPS5533380A - Cathode-ray tube projection type display device - Google Patents
Cathode-ray tube projection type display deviceInfo
- Publication number
- JPS5533380A JPS5533380A JP10637378A JP10637378A JPS5533380A JP S5533380 A JPS5533380 A JP S5533380A JP 10637378 A JP10637378 A JP 10637378A JP 10637378 A JP10637378 A JP 10637378A JP S5533380 A JPS5533380 A JP S5533380A
- Authority
- JP
- Japan
- Prior art keywords
- quadrants
- screen
- coils
- correction current
- adjusted
- 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
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
PURPOSE: To secure adjustment for the picture on the screen with every 1st to 4th quadrants by driving the secondary deflecting coil with the correction current which adjusted the intensity by correction current generation circuit for the 1st to 4th quadrants of the CRT.
CONSTITUTION: CRT1a∼1c project the picture frames in pile onto screen 3 via the optical system; the vertical and horizontal scannings are carried out for each CRT via main deflecting coils 4a∼4c; and coils 4a∼4c are driven by main deflecting circuits 6a∼6c. Here secondary deflecting coils 5a∼5c are provided to give correction to the horizontal scanning deflection caused by circuit 6a∼6c. Then coils 5a∼5c are driven via correction current generation circuits 9a∼9c by the correction current which adjusted the intensity independently for the 1st to 4th quadrants on the CRT screen. As a result, the picture obtained on screen 3 can be adjusted with every 1st to 4th quadrants.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10637378A JPS5533380A (en) | 1978-08-30 | 1978-08-30 | Cathode-ray tube projection type display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10637378A JPS5533380A (en) | 1978-08-30 | 1978-08-30 | Cathode-ray tube projection type display device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5533380A true JPS5533380A (en) | 1980-03-08 |
Family
ID=14431909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10637378A Pending JPS5533380A (en) | 1978-08-30 | 1978-08-30 | Cathode-ray tube projection type display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5533380A (en) |
-
1978
- 1978-08-30 JP JP10637378A patent/JPS5533380A/en active Pending
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