JPS6462973A - Noise reducer - Google Patents

Noise reducer

Info

Publication number
JPS6462973A
JPS6462973A JP62219093A JP21909387A JPS6462973A JP S6462973 A JPS6462973 A JP S6462973A JP 62219093 A JP62219093 A JP 62219093A JP 21909387 A JP21909387 A JP 21909387A JP S6462973 A JPS6462973 A JP S6462973A
Authority
JP
Japan
Prior art keywords
outline part
outline
feedback
signal
detect
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
JP62219093A
Other languages
Japanese (ja)
Inventor
Hidetoshi Ozaki
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP62219093A priority Critical patent/JPS6462973A/en
Priority to KR1019880010856A priority patent/KR910005375B1/en
Publication of JPS6462973A publication Critical patent/JPS6462973A/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
    • H04N5/213—Circuitry for suppressing or minimising impulsive noise

Landscapes

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

Abstract

PURPOSE:To effectively remove the noise of an outline part without enlarging a movement obsecurity by causing a noise removing quantity in the outline part periphery of the still part of an input video signal to be larger than the noise removing quantity of a flat part. CONSTITUTION:By the output of a comparing circuit 5 to detect the outline part of a video signal to be supplied to an input terminal 1 and by the output of a comparing circuit 16 to detect the outline part of the signal to be outputted from a frame memory 11, the value of the feedback coefficient K of a feedback circuit 9 is made variable. When both signals are the outline part as in the case of a still picture with a large frame correlation, the feedback quantity of the outline part is made larger than that of the flat part, and when the signal of one side is the outline part as in the case of a moving picture with the small frame correlation, the feedback quantity of the outline part is made equal to that of the flat part.
JP62219093A 1987-09-03 1987-09-03 Noise reducer Pending JPS6462973A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62219093A JPS6462973A (en) 1987-09-03 1987-09-03 Noise reducer
KR1019880010856A KR910005375B1 (en) 1987-09-03 1988-08-26 Noise reducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62219093A JPS6462973A (en) 1987-09-03 1987-09-03 Noise reducer

Publications (1)

Publication Number Publication Date
JPS6462973A true JPS6462973A (en) 1989-03-09

Family

ID=16730147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62219093A Pending JPS6462973A (en) 1987-09-03 1987-09-03 Noise reducer

Country Status (2)

Country Link
JP (1) JPS6462973A (en)
KR (1) KR910005375B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0502615A3 (en) * 1991-03-07 1994-04-27 Matsushita Electric Industrial Co Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0502615A3 (en) * 1991-03-07 1994-04-27 Matsushita Electric Industrial Co Ltd

Also Published As

Publication number Publication date
KR910005375B1 (en) 1991-07-29
KR890006061A (en) 1989-05-18

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