JPS5512664A - Picture image indicator - Google Patents
Picture image indicatorInfo
- Publication number
- JPS5512664A JPS5512664A JP8558078A JP8558078A JPS5512664A JP S5512664 A JPS5512664 A JP S5512664A JP 8558078 A JP8558078 A JP 8558078A JP 8558078 A JP8558078 A JP 8558078A JP S5512664 A JPS5512664 A JP S5512664A
- Authority
- JP
- Japan
- Prior art keywords
- section
- electrodes
- overlapped
- picture quality
- step wave
- 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.)
- Granted
Links
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
PURPOSE: To improve the picture quality of planar CRT through addition of simple circuitry for controlling the voltage applied on a plural pair of deflecting electrodes such that the abrupt voltage change is emphasized.
CONSTITUTION: The electron beam from thermion discharging source is passed through selective electrodes then deflected by plural pairs of vertical and horizontal deflection electrodes and impinged against a fluorescent board to emit light. Pulse voltages 18a, 19a are applied on the abrupt voltage changing sections 17a, 18a in the direction to emphasise the changing. The indicating area corresponding the uppermost section of step wave 17 is overlapped with the area 21 corresponding the lowermost section of next period step wave 17, and when adjusting said overlapped section the picture quality can be improved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8558078A JPS5832457B2 (en) | 1978-07-12 | 1978-07-12 | image display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8558078A JPS5832457B2 (en) | 1978-07-12 | 1978-07-12 | image display device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5512664A true JPS5512664A (en) | 1980-01-29 |
JPS5832457B2 JPS5832457B2 (en) | 1983-07-13 |
Family
ID=13862739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8558078A Expired JPS5832457B2 (en) | 1978-07-12 | 1978-07-12 | image display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5832457B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57208048A (en) * | 1981-06-18 | 1982-12-21 | Matsushita Electric Ind Co Ltd | Image display apparatus |
-
1978
- 1978-07-12 JP JP8558078A patent/JPS5832457B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57208048A (en) * | 1981-06-18 | 1982-12-21 | Matsushita Electric Ind Co Ltd | Image display apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS5832457B2 (en) | 1983-07-13 |
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