JPS55153482A - Noise suppression unit - Google Patents

Noise suppression unit

Info

Publication number
JPS55153482A
JPS55153482A JP6113979A JP6113979A JPS55153482A JP S55153482 A JPS55153482 A JP S55153482A JP 6113979 A JP6113979 A JP 6113979A JP 6113979 A JP6113979 A JP 6113979A JP S55153482 A JPS55153482 A JP S55153482A
Authority
JP
Japan
Prior art keywords
video signal
noise
mixed
memory
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.)
Granted
Application number
JP6113979A
Other languages
Japanese (ja)
Other versions
JPS6258192B2 (en
Inventor
Shigeru Yamazaki
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.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting 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 Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP6113979A priority Critical patent/JPS55153482A/en
Publication of JPS55153482A publication Critical patent/JPS55153482A/en
Publication of JPS6258192B2 publication Critical patent/JPS6258192B2/ja
Granted 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

Abstract

PURPOSE:To reject noise without deteriorating video quality, by using the regularity of signal spectrum arrangement of each component, detecting pulsive noise of non- period, and concealing the video signal in missing with the video signal of strong corelativity. CONSTITUTION:The color video signal mixed with pulsive noise from an input terminal 1 is written in one fraem memory 2' via one horizontal scanning H delay circuit 7 after digitalization. Further, the one frame delay video signal from the memory 2' and the video signal not delayed from an A/D converter 6 are fed to a subtraction circuit 3 for subtraction. Accordingly, when noise is mixed with the input color video signal, the write-in of the video signal mixed with pulsive noise from the 1H delay circuit 7 is inhibited, and the video signal not mixed with noise before one frame is stored as it is and replaced. If no noise is mixed, the signal is written in the one frame memory 2' as it is.
JP6113979A 1979-05-17 1979-05-17 Noise suppression unit Granted JPS55153482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6113979A JPS55153482A (en) 1979-05-17 1979-05-17 Noise suppression unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6113979A JPS55153482A (en) 1979-05-17 1979-05-17 Noise suppression unit

Publications (2)

Publication Number Publication Date
JPS55153482A true JPS55153482A (en) 1980-11-29
JPS6258192B2 JPS6258192B2 (en) 1987-12-04

Family

ID=13162452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6113979A Granted JPS55153482A (en) 1979-05-17 1979-05-17 Noise suppression unit

Country Status (1)

Country Link
JP (1) JPS55153482A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58500506A (en) * 1981-04-06 1983-03-31 アールシーエー　ライセンシング　コーポレーシヨン video signal analyzer
JPS60196077A (en) * 1984-03-19 1985-10-04 Matsushita Electric Ind Co Ltd Video signal correcting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58500506A (en) * 1981-04-06 1983-03-31 アールシーエー　ライセンシング　コーポレーシヨン video signal analyzer
JPS60196077A (en) * 1984-03-19 1985-10-04 Matsushita Electric Ind Co Ltd Video signal correcting device

Also Published As

Publication number Publication date
JPS6258192B2 (en) 1987-12-04

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