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:
Oct. 18, 1988
Filed:
Jul. 25, 1986
Kunio Matsumoto, Kanagawa, JP;
Tadao Fujita, Kanagawa, JP;
Kenji Takanashi, Kanagawa, JP;
Yutaka Tanaka, Tokyo, JP;
Toshiro Ohmura, Tokyo, JP;
Taiichiro Kurita, Kanagawa, JP;
Yoshimichi Ohtsuka, Kanagawa, JP;
Taiji Nishizawa, Tokyo, JP;
Yuichi Ninomiya, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Nippon Hoso Kyokai, Tokyo, JP;
Abstract
In an apparatus for detecting movement of a television image in response to frame difference data corresponding to a difference between present frame data and previous frame data, a video signal is divided into a plurality of segmental areas for each frame, a pixel or picture element is selected to represent each of the segmental areas, frame difference data are produced for each of the segmental areas by calculating differences in the position or coordinates of a pixel representative of a segmental area of a previous frame from the respective picture element of the corresponding segmental area in the present frame, and each of the calculated differences smaller than a predetermined magnitude, and which would be characteristic of a stationary background portion of the television image, is omitted from the frame difference data. This is effective to improve the movement vector detection accuracy. The apparatus has a circuit for zeroing the frame difference data, and thereby improving, the movement vector detection reliability when the number of the calculated differences omitted from the frame difference data exceeds a predetermined value.