JPS55655A - Symbol display device for video display equipment - Google Patents
Symbol display device for video display equipmentInfo
- Publication number
- JPS55655A JPS55655A JP7357478A JP7357478A JPS55655A JP S55655 A JPS55655 A JP S55655A JP 7357478 A JP7357478 A JP 7357478A JP 7357478 A JP7357478 A JP 7357478A JP S55655 A JPS55655 A JP S55655A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- monitor
- circuit
- symbol
- pattern signal
- 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
- Studio Circuits (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
PURPOSE: To obtain a display device with which the adjustment of the white and black levels and the position adjustment can be omitted for the signals to be displayed by carrying out the monitor display via the symbol pattern signal having both the white and black levels.
CONSTITUTION: The video signal which could be picked up by camera 1 is sent to monitor 3 via amplifier 2 to display the picture corresponding to the video signal. On the other hand, picture element division circuit 4 generates the signal which divides the screen of monitor 3 with every picture element. Symbol circuit 5 generates the symbol pattern signal in correspondence to the indication given from input A. With this pattern signal, the signal featuring such timing that can be displayed at an optional position of monitor 3 corresponding to indication value B is generated through address circuit 6. For the symbol pattern signal, the logic product is secured with the picture element division signal of the scanning line direction via AND circuit 7. Then the pattern signal is sent to the input terminal of the single side of amplifier 2 via the differential circuit comprising capacitor 8 and resistance 9 to be displayed at monitor 3. As a result, the symbol can be seen regardless of the state of the image to be the background.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7357478A JPS55655A (en) | 1978-06-16 | 1978-06-16 | Symbol display device for video display equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7357478A JPS55655A (en) | 1978-06-16 | 1978-06-16 | Symbol display device for video display equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55655A true JPS55655A (en) | 1980-01-07 |
Family
ID=13522180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7357478A Pending JPS55655A (en) | 1978-06-16 | 1978-06-16 | Symbol display device for video display equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55655A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51157028U (en) * | 1975-06-09 | 1976-12-14 | ||
JPS58195295A (en) * | 1982-05-08 | 1983-11-14 | 松下電工株式会社 | Information wiring system |
JPS6120479A (en) * | 1984-07-09 | 1986-01-29 | Ootec Denshi Kk | Suprevisory system |
US4980766A (en) * | 1988-03-14 | 1990-12-25 | Bulgarska Televisia Kam Komitet Sa Televisia I Radio | Method and a device for symbol introduction in a programme television signal |
-
1978
- 1978-06-16 JP JP7357478A patent/JPS55655A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51157028U (en) * | 1975-06-09 | 1976-12-14 | ||
JPS58195295A (en) * | 1982-05-08 | 1983-11-14 | 松下電工株式会社 | Information wiring system |
JPH0437479B2 (en) * | 1982-05-08 | 1992-06-19 | Matsushita Denko Kk | |
JPS6120479A (en) * | 1984-07-09 | 1986-01-29 | Ootec Denshi Kk | Suprevisory system |
US4980766A (en) * | 1988-03-14 | 1990-12-25 | Bulgarska Televisia Kam Komitet Sa Televisia I Radio | Method and a device for symbol introduction in a programme television signal |
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