JPS5485636A - Picture projecting device - Google Patents
Picture projecting deviceInfo
- Publication number
- JPS5485636A JPS5485636A JP15403377A JP15403377A JPS5485636A JP S5485636 A JPS5485636 A JP S5485636A JP 15403377 A JP15403377 A JP 15403377A JP 15403377 A JP15403377 A JP 15403377A JP S5485636 A JPS5485636 A JP S5485636A
- Authority
- JP
- Japan
- Prior art keywords
- screen
- circuit
- signal
- main
- color
- 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
- Processing Of Color Television Signals (AREA)
- Synchronizing For Television (AREA)
Abstract
PURPOSE: To secure the simple coloring for the secondary screen with the specified color to increase the impression of the secondary screen as well as to secure an easy identification to the main screen for the picture projecting device in which the pictures of two channels can be projected simultaneously on the screen of color CRT of the TV picture receiver.
CONSTITUTION: The screen of plural TV signals is displayed on single color video tube 30, and one of the TV signals is selected the main signal. The beam deflection is given by the synchronous signal of the main signal to project the main screen. The signals excluding the main signal are secondary signals to form the secondary screen, and the secondary screen is put into part of the main screen in synchronization with the synchronous signal of the main signal. Then signal selector circuit 13, video process circuit 24, adder circuit 25, switch circuit 26 and chroma signal process circuit 27 are installed. Furthermore, primary color driving output circuit 28 is provided to color the specified color on the secondary screen with supply of the output of circuit 25, along with switch circuit 29 to switch clock pulse C of the input selection signal. Thus, the impression of the secondary screen is increased by the output of circuit 28.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15403377A JPS5850073B2 (en) | 1977-12-20 | 1977-12-20 | Image projection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15403377A JPS5850073B2 (en) | 1977-12-20 | 1977-12-20 | Image projection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5485636A true JPS5485636A (en) | 1979-07-07 |
JPS5850073B2 JPS5850073B2 (en) | 1983-11-08 |
Family
ID=15575431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15403377A Expired JPS5850073B2 (en) | 1977-12-20 | 1977-12-20 | Image projection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5850073B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56111391A (en) * | 1980-02-08 | 1981-09-03 | Nec Home Electronics Ltd | Picture adjusting method at the time of color killer in color image receiving device |
JPS60220689A (en) * | 1984-04-18 | 1985-11-05 | Hitachi Ltd | Picture display driving circuit |
-
1977
- 1977-12-20 JP JP15403377A patent/JPS5850073B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56111391A (en) * | 1980-02-08 | 1981-09-03 | Nec Home Electronics Ltd | Picture adjusting method at the time of color killer in color image receiving device |
JPS622517B2 (en) * | 1980-02-08 | 1987-01-20 | Nippon Denki Hoomu Erekutoronikusu Kk | |
JPS60220689A (en) * | 1984-04-18 | 1985-11-05 | Hitachi Ltd | Picture display driving circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS5850073B2 (en) | 1983-11-08 |
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