JPS56117481A - Color television camera - Google Patents

Color television camera

Info

Publication number
JPS56117481A
JPS56117481A JP2050980A JP2050980A JPS56117481A JP S56117481 A JPS56117481 A JP S56117481A JP 2050980 A JP2050980 A JP 2050980A JP 2050980 A JP2050980 A JP 2050980A JP S56117481 A JPS56117481 A JP S56117481A
Authority
JP
Japan
Prior art keywords
circuit
signal
power source
commercial power
supplied
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
JP2050980A
Other languages
Japanese (ja)
Inventor
Hiroichi Sokei
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2050980A priority Critical patent/JPS56117481A/en
Publication of JPS56117481A publication Critical patent/JPS56117481A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

PURPOSE:To eliminate a flicker phenomenon, by eliminating a difference of frequency between the vertical synchronous signal and a commercial power source through a differential subtractor circuit. CONSTITUTION:The signal Y supplied from the preamplifier 2 is delayed by the delay circuit 6 and then applied to the low pass filter 15 of 3MHz and the band pass filter 16. A differential subtraction is given through the 50Hz flicker eliminating circuit 18 between the luminance signal supplied from the filter 15 and containing the commercial power source frequency 50Hz and the signal obtained by giving a wave detection through the wave detecting circuit 17 to the space frequency obtained through the filter 16 each. The signal received a differential subtraction is then supplied to the process circuit 9. In such way, the flicker phenomenon caused by the commercial power source frequency and emerging to a reproduced picture can be eliminated.
JP2050980A 1980-02-22 1980-02-22 Color television camera Pending JPS56117481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2050980A JPS56117481A (en) 1980-02-22 1980-02-22 Color television camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2050980A JPS56117481A (en) 1980-02-22 1980-02-22 Color television camera

Publications (1)

Publication Number Publication Date
JPS56117481A true JPS56117481A (en) 1981-09-14

Family

ID=12029125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2050980A Pending JPS56117481A (en) 1980-02-22 1980-02-22 Color television camera

Country Status (1)

Country Link
JP (1) JPS56117481A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59191986A (en) * 1983-04-15 1984-10-31 Fuji Photo Film Co Ltd Video signal circuit
FR2571915A1 (en) * 1984-10-12 1986-04-18 Philips Nv TELEVISION SHOOTING SYSTEM OPERATING AT DIFFERENT FREQUENCIES OF THE AC AREA AND TELEVISION FRAME AND TELEVISION SHOOTING DEVICE SUITABLE FOR THIS SYSTEM
US5529426A (en) * 1991-10-24 1996-06-25 Yazaki Corporation Housing block-retaining construction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59191986A (en) * 1983-04-15 1984-10-31 Fuji Photo Film Co Ltd Video signal circuit
FR2571915A1 (en) * 1984-10-12 1986-04-18 Philips Nv TELEVISION SHOOTING SYSTEM OPERATING AT DIFFERENT FREQUENCIES OF THE AC AREA AND TELEVISION FRAME AND TELEVISION SHOOTING DEVICE SUITABLE FOR THIS SYSTEM
US5529426A (en) * 1991-10-24 1996-06-25 Yazaki Corporation Housing block-retaining construction

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