JPS5579427A - Video projector - Google Patents
Video projectorInfo
- Publication number
- JPS5579427A JPS5579427A JP15439878A JP15439878A JPS5579427A JP S5579427 A JPS5579427 A JP S5579427A JP 15439878 A JP15439878 A JP 15439878A JP 15439878 A JP15439878 A JP 15439878A JP S5579427 A JPS5579427 A JP S5579427A
- Authority
- JP
- Japan
- Prior art keywords
- projector
- video
- video image
- screen
- projection
- 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
- Projection Apparatus (AREA)
Abstract
PURPOSE: To project the video image of projector by sharing the projection type TV screen, by providing a video projector integrally in a projection unit of projection type TV.
CONSTITUTION: When projecting video images of broadcast programs or by VTR or the like through projection units 2aW2C of a video projector 1, if it is desired to insert captions in the video image being projected on the screen or produce other information on the screen, the other information is superposed on the video image projected by the projector 1 through a projecting part 4 by means of a slide projector 3. At this time, the beam current of the projector 1 is detected, which is used as control voltage to control the voltage of the light emitting part of the projector 3. Hence, the brightness of the video image superposed may be controlled.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15439878A JPS5579427A (en) | 1978-12-13 | 1978-12-13 | Video projector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15439878A JPS5579427A (en) | 1978-12-13 | 1978-12-13 | Video projector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5579427A true JPS5579427A (en) | 1980-06-14 |
Family
ID=15583263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15439878A Pending JPS5579427A (en) | 1978-12-13 | 1978-12-13 | Video projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5579427A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0660863U (en) * | 1993-01-28 | 1994-08-23 | 株式会社電通プロックス | Landscape simulator |
-
1978
- 1978-12-13 JP JP15439878A patent/JPS5579427A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0660863U (en) * | 1993-01-28 | 1994-08-23 | 株式会社電通プロックス | Landscape simulator |
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