JPS56100578A - Television camera device - Google Patents

Television camera device

Info

Publication number
JPS56100578A
JPS56100578A JP293580A JP293580A JPS56100578A JP S56100578 A JPS56100578 A JP S56100578A JP 293580 A JP293580 A JP 293580A JP 293580 A JP293580 A JP 293580A JP S56100578 A JPS56100578 A JP S56100578A
Authority
JP
Japan
Prior art keywords
circuit
video
reference level
video signal
pulse
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
Application number
JP293580A
Other languages
Japanese (ja)
Other versions
JPS6022547B2 (en
Inventor
Tatsuo Kawasaki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP55002935A priority Critical patent/JPS6022547B2/en
Publication of JPS56100578A publication Critical patent/JPS56100578A/en
Publication of JPS6022547B2 publication Critical patent/JPS6022547B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To make adjustment of the beam quantity possible without a waveform monitor and so on, by switching the gain of a video amplifier and by giving the reference level to a video signal and by superposing a beam set pulse equal to a negative-polarity video rated output to a video signal. CONSTITUTION:In gain switching circuit 12, the circuit to attenuate the input signal to 1/n and the bypass circuit are selected by the change-over switch. Reference level gate circuit 13 gates the left video period of the screen center in the reference level. Reference level gate pulse 3 and beam set pulse 4 are generated by pulse generating circuit 16. In mixing circuit 4, negative-polarity beam set pulse 4 equal to the video rated level and the video signal are superposed. Then, video signal 2 is supplied to view finder display circuit 15.
JP55002935A 1980-01-15 1980-01-15 television camera equipment Expired JPS6022547B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55002935A JPS6022547B2 (en) 1980-01-15 1980-01-15 television camera equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55002935A JPS6022547B2 (en) 1980-01-15 1980-01-15 television camera equipment

Publications (2)

Publication Number Publication Date
JPS56100578A true JPS56100578A (en) 1981-08-12
JPS6022547B2 JPS6022547B2 (en) 1985-06-03

Family

ID=11543203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55002935A Expired JPS6022547B2 (en) 1980-01-15 1980-01-15 television camera equipment

Country Status (1)

Country Link
JP (1) JPS6022547B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5546136A (en) * 1993-02-19 1996-08-13 Fujitsu Limited Information processing unit for modifying gain in a frequency band of a video signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5546136A (en) * 1993-02-19 1996-08-13 Fujitsu Limited Information processing unit for modifying gain in a frequency band of a video signal

Also Published As

Publication number Publication date
JPS6022547B2 (en) 1985-06-03

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