JPS55655A - Symbol display device for video display equipment - Google Patents

Symbol display device for video display equipment

Info

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
Application number
JP7357478A
Other languages
Japanese (ja)
Inventor
Kazuo Takashima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7357478A priority Critical patent/JPS55655A/en
Publication of JPS55655A publication Critical patent/JPS55655A/en
Pending legal-status Critical Current

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
JP7357478A 1978-06-16 1978-06-16 Symbol display device for video display equipment Pending JPS55655A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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