JPS6464470A - Filter for television picture - Google Patents

Filter for television picture

Info

Publication number
JPS6464470A
JPS6464470A JP62220406A JP22040687A JPS6464470A JP S6464470 A JPS6464470 A JP S6464470A JP 62220406 A JP62220406 A JP 62220406A JP 22040687 A JP22040687 A JP 22040687A JP S6464470 A JPS6464470 A JP S6464470A
Authority
JP
Japan
Prior art keywords
filter
high frequency
component
frequency component
constant
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
JP62220406A
Other languages
Japanese (ja)
Other versions
JPH0681270B2 (en
Inventor
Yuichi Ninomiya
Yoshimichi Otsuka
Yoshinori Izumi
Seiichi Goshi
Yoshiaki Kakui
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 JP62220406A priority Critical patent/JPH0681270B2/en
Publication of JPS6464470A publication Critical patent/JPS6464470A/en
Publication of JPH0681270B2 publication Critical patent/JPH0681270B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a filter for a picture stably operating without losing a natural feeling by processing the high frequency component of a picture signal clamped to a prescribed level by a temporal filter constant in a time constant. CONSTITUTION:The high frequency component of an input TV picture signal by an LPF 1, a subtracter 2 is converted and clamped to a prescribed level range by an overflow and undervalue circuit 3 to limit a bit length. This high frequency component is stably processed in a time direction by the temporal filter 4 provided with a time constant circuit 5 constant in the time constant or the like to output the high frequency component (e) having no unnatural feeling. The component (e), a component (c) passing no filter and the minimum component of an absolute value of the average value of both the components are outputted to an adder through an absolute value minimum selecting circuit 7. According to this constitution, The filter for the TV picture stably operating without losing the natural feeling is obtained.
JP62220406A 1987-09-04 1987-09-04 Television image filter Expired - Lifetime JPH0681270B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62220406A JPH0681270B2 (en) 1987-09-04 1987-09-04 Television image filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62220406A JPH0681270B2 (en) 1987-09-04 1987-09-04 Television image filter

Publications (2)

Publication Number Publication Date
JPS6464470A true JPS6464470A (en) 1989-03-10
JPH0681270B2 JPH0681270B2 (en) 1994-10-12

Family

ID=16750618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62220406A Expired - Lifetime JPH0681270B2 (en) 1987-09-04 1987-09-04 Television image filter

Country Status (1)

Country Link
JP (1) JPH0681270B2 (en)

Also Published As

Publication number Publication date
JPH0681270B2 (en) 1994-10-12

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