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:
Dec. 29, 1998
Filed:
Nov. 29, 1995
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A video decoding apparatus for decoding encoded video data to continuously produce decoded pictures. The video data includes a series of pictures, each picture contains a series of slices, and each slice contains a series of macroblocks. A dequantizer performs dequantization of the video data based upon a quantization threshold value. A motion-vector restoring circuit restores data for each macroblock. A direct current error detector is provided to detect erroneous macroblocks based upon the dequantized data. A motion-area error detector is provided to detect erroneous macroblocks based upon the restored motion vector data. An erroneous macroblock is replaced by a corresponding macroblock from a preceding picture. Subsequent macroblocks in a slice may also be replaced by corresponding macroblocks from a preceding picture.