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. 25, 1997
Filed:
Jul. 26, 1995
Sony Corporation, Tokyo, JP;
Abstract
Apparatus for detecting a motion vector and encoding picture signals. Where a motion vector is obtained by block matching employing a luminance pattern obtained by eliminating dc components from a luminance signal of a picture, and thus containing only ac components, is compared to a motion vector obtained by block matching employing a luminance signal of a picture. An optimum motion vector obtained based upon the result of comparison is employed as a true motion vector for variable length encoding the picture signal. In this manner, a correct motion vector may be detected and employed for variable length coding even in cases where the average luminance of the picture on the screen is varied significantly.