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:
Mar. 10, 1998
Filed:
Jan. 19, 1996
Seong-bong Kim, Seoul, KR;
Samsung Electronics Co., Ltd., Kyungki-Do, KR;
Abstract
When a data error is generated in a macroblock in a Bidirectionally-predictive coded picture (i.e., a B-picture), error concealment is performed on the macroblock. In the situation where the macroblock in the row just above and in the same column as the error-generated macroblock is an intra macroblock, the intra macroblock cannot be used to provide a motion vector for use in error concealment. In such a case, a method is provided to obtain a motion vector for the error-generated macroblock by taking the arithmetic average of the motion vectors of the macroblocks which are on each side of the macroblock just above the error-generated macroblock and in the same column. Error concealment by motion compensation is performed with respect to the corresponding macroblock in the same position in the B-picture which is either forward or backward in time sequence. Choice of whether the forward or backward B-picture is to be used is made adaptively, based upon whether a scene change is determined to have occurred.