JPS5698976A - Projection television receiver - Google Patents
Projection television receiverInfo
- Publication number
- JPS5698976A JPS5698976A JP165580A JP165580A JPS5698976A JP S5698976 A JPS5698976 A JP S5698976A JP 165580 A JP165580 A JP 165580A JP 165580 A JP165580 A JP 165580A JP S5698976 A JPS5698976 A JP S5698976A
- Authority
- JP
- Japan
- Prior art keywords
- reduce
- ray tube
- cathode
- screen
- picture
- 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
- Details Of Television Scanning (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
PURPOSE: To reduce the lessening of a raster pitch and to reduce the damage of a cathode-ray tube by keeping brightness constant while changing a picture, reproduced on a screen, in size.
CONSTITUTION: Horizontal deflecting circuit 5 of a projection cathode-ray tube which reproduces and projects a picture on the screen is provided with relay switches 7a and 7b that connect horizontal width correcting coils 6a and 6b to deflecting yokes 5b∼5d, and relay switches 7c and 7d that connect impedance correcting coils 6c and 6d width coil 5e. Further, vertical oscillating circuit 8 is proviced with vertical width adjusting volume units 8b∼8d, and circuit 20 supplying beam current to the cathode-ray tube is also provided with contrast adjusting resistances 24 and 25. Then, switches 7a∼7d, volume units 8b∼8d, and resistances 24 and 25 are changed over via interlocking switches 10∼15 to change in size and project the reproduced picture on the screen and the brightness is held constant to reduce rasters and also to reduce the damage of the cathode-ray tube.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP165580A JPS5698976A (en) | 1980-01-09 | 1980-01-09 | Projection television receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP165580A JPS5698976A (en) | 1980-01-09 | 1980-01-09 | Projection television receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5698976A true JPS5698976A (en) | 1981-08-08 |
JPS6119197B2 JPS6119197B2 (en) | 1986-05-16 |
Family
ID=11507530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP165580A Granted JPS5698976A (en) | 1980-01-09 | 1980-01-09 | Projection television receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5698976A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3326329A1 (en) * | 1982-07-22 | 1984-02-09 | Honda Giken Kogyo K.K., Tokyo | TWO-CIRCLE ANTI-BLOCK BRAKE DEVICE FOR FOUR-WHEELED VEHICLES |
JPH057772U (en) * | 1991-07-17 | 1993-02-02 | 株式会社クボタ | Sloping structure of inclined pipe |
SG82532A1 (en) * | 1989-12-18 | 2001-08-21 | Thomson Multimedia Sa | Band indicative segmented tuning bar display |
-
1980
- 1980-01-09 JP JP165580A patent/JPS5698976A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3326329A1 (en) * | 1982-07-22 | 1984-02-09 | Honda Giken Kogyo K.K., Tokyo | TWO-CIRCLE ANTI-BLOCK BRAKE DEVICE FOR FOUR-WHEELED VEHICLES |
SG82532A1 (en) * | 1989-12-18 | 2001-08-21 | Thomson Multimedia Sa | Band indicative segmented tuning bar display |
JPH057772U (en) * | 1991-07-17 | 1993-02-02 | 株式会社クボタ | Sloping structure of inclined pipe |
Also Published As
Publication number | Publication date |
---|---|
JPS6119197B2 (en) | 1986-05-16 |
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