Method for decoding of MPEG-4 video

Details Method for decoding of MPEG-4 video Method for decoding of MPEG-4 video

2007-05-01

2007-05-01

Lee, Richard (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

10287358

ABSTRACT:
A decoding method for MPEG-4 digital video having data-partitioned simple profile, and more particularly to a method of constituting an MPEG-4 video decoder having a reasonable error resilience by properly using error resistant algorithms under the circumstances where irrecoverable errors can be added at transmission channel. A method for decoding a bit stream of data-partitioned MPEG-4 video in an error-prone transmission environment characterized by comprising the steps of: searching for a start code of the following VP/VOP in an inputted bit stream; decoding the following VP/VOP headers succeeding the VP/VOP start code; checking the error existence in macroblock addresses (MBAs) using the MBAs of current VP and the following VP; scanning a VP, whose MBA range is determined through previous steps, for error-detection; and carrying out a normal decoding or an error concealment on each macroblock of current VP according to the VP scan result.

REFERENCES:
patent: 6404817 (2002-06-01), Saha et al.
patent: 6704363 (2004-03-01), Kim
patent: 2001/0007575 (2001-07-01), Mori et al.
patent: 2002/0093595 (2002-07-01), Sugiyama et al.
patent: 2003/0152149 (2003-08-01), Denolf

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