The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 1985
Filed:
Dec. 09, 1982
Taiji Nishizawa, Tokyo, JP;
Yutaka Tanaka, Tokyo, JP;
Nippon Hoso Kyokai, Tokyo, JP;
Abstract
A picture signal processing for converting a wideband high quality picture signal between interlace and sequential scanning systems is effected through a spatio-temporal filter based on multi-dimensional coordinates consisting of at least vertical frequency and temporal frequency axes. A passing region of the spatio-temporal filter is restricted to lower regions of the multi-dimensional coordinates including an origin thereof for separating original picture signal components from unnecessary signal components generated by the scanning conversion in order to maintain the high picture quality. The performance of the spatio-temporal filter is improved in consideration of the motion of the picture and the ambiguous contour of the still picture which is caused by the scanning conversion.