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. 09, 1993
Filed:
Oct. 21, 1991
Hiroyuki Kawashima, Tokyo, JP;
Hiroyuki Kita, Kanagawa, JP;
Shuichi Obana, Kanagawa, JP;
Masaharu Tokuhara, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A video signal processing circuit used for a non-interlace television comprises an interfield interpolation circuit for carrying out interfield interpolation by using a video signal before one field of an input video signal to output interpolated line video signals corresponding to respective interline positions in one field. An intrafield interpolation circuit carries out intrafield interpolation by using video signals of a plurality of lines of the input video signal to output interpolated line video signals corresponding to respective interline positions in one field. A motion detector detects motion of the input video signal, and a weighting adder implements weighting to an output signal from the interfield interpolation circuit and an output signal from the intrafield interpolation circuit in accordance with a signal from the motion detector to add the weighted output signals. A sequential scan converter carries out conversion into a sequential scanning signal on the basis of the input video signal and an output signal from the weighting adder, and a controller controls at least the interfield interpolation circuit in accordance with a television standard system of the input video signal, thereby making it possible to lessen disturbance, e.g., deterioration in the picture quality, etc., occurring in the interlaced scanning.