JPS6460064A - Noise reducer - Google Patents

Noise reducer

Info

Publication number
JPS6460064A
JPS6460064A JP62215169A JP21516987A JPS6460064A JP S6460064 A JPS6460064 A JP S6460064A JP 62215169 A JP62215169 A JP 62215169A JP 21516987 A JP21516987 A JP 21516987A JP S6460064 A JPS6460064 A JP S6460064A
Authority
JP
Japan
Prior art keywords
video signal
low level
edge part
high frequency
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
JP62215169A
Other languages
Japanese (ja)
Inventor
Takao Sasakura
Katsumi Arisaka
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP62215169A priority Critical patent/JPS6460064A/en
Publication of JPS6460064A publication Critical patent/JPS6460064A/en
Pending legal-status Critical Current

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  • Picture Signal Circuits (AREA)

Abstract

PURPOSE:To remain the pulse characteristic of an edge waveform and to remove a high frequency noise, by removing a low level component out of a high frequency component except an edge part based on the edge part detecting signal of a video signal and subtracting this removed low level component signal from an original video signal. CONSTITUTION:The titled device is provided with a high-pass filter 2 to remove the high frequency component from the video signal, a control signal generating means 5 to detect the edge part of the video signal and to generate a control signal, low level component detecting means 3 and 8 to pass through the low level component of the high frequency component except the edge part of the video signal based on the control signal from the generating means 5 and a means 4 to subtract signals which are from the low level component detecting means 3 and 8, from the video signal and to execute and output. Thus, without losing the clearness of the edge part, the noise of the video signal can be reduced so that a reproducing image not to generate a smear can be obtained.
JP62215169A 1987-08-31 1987-08-31 Noise reducer Pending JPS6460064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62215169A JPS6460064A (en) 1987-08-31 1987-08-31 Noise reducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62215169A JPS6460064A (en) 1987-08-31 1987-08-31 Noise reducer

Publications (1)

Publication Number Publication Date
JPS6460064A true JPS6460064A (en) 1989-03-07

Family

ID=16667804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62215169A Pending JPS6460064A (en) 1987-08-31 1987-08-31 Noise reducer

Country Status (1)

Country Link
JP (1) JPS6460064A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04176269A (en) * 1990-11-09 1992-06-23 Victor Co Of Japan Ltd Noise reducing circuit for video signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04176269A (en) * 1990-11-09 1992-06-23 Victor Co Of Japan Ltd Noise reducing circuit for video signal

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