Patent ID: 7212575
Filing Date: 2007-05-01
Classification: H04N

Abstract:
1. A method for decoding of video for decoding a bit stream of data-partitioned video in an error-prone transmission environment characterized by comprising: a first step of searching for a start code of the following VP/VOP in an inputted video bit stream; a second step of decoding the following VP/VOP headers succeeding said searched VP/VOP start code; a third step of checking the error existence macroblock addresses (MBAs) using the MBAs of the current VP and the following VP; a fourth step of scanning a VP, whose MBA range is determined through said first, second and third steps, for error-detection; and a fifth step of carrying out a normal decoding or an error concealment on each macroblock of current VP according to the result of said VP scanning, wherein said fourth step further comprises the steps of: (a) decoding a first part and checking for an error existence; (b) decoding a second part header and checking for an error existence; and (c) scanning on a second part texture and checking for an error existence, wherein said (c) step further comprises the steps of: (c1) carries out a forward scan on said second part texture; (c2) in case of no error occurred in said (c1) step, comparing the location where said forward scan is ended and the location of the end of said second part texture, and if they are consistent with each other, ending the VP scan; (c3) in case of no RVLC is used in said second part texture, determining that an error is occurred in said second part header and ending the VP scan; (c4) in case that said location where said forward scan is ended is located within a certain range from the starting location of said second part texture, determining that an error is occurred in said second part header and ending the VP scan, and otherwise, carries out a backward scan on said second part texture; and (c5) setting that an error is occurred in said second part texture and determining which macroblocks are to be error-concealed in said VP.