MPEG video drift reduction

Details MPEG video drift reduction MPEG video drift reduction

2006-12-05

2006-12-05

An, Shawn S. (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

C375S240250, C375S240260, C375S240200, C375S240230, C375S240160, C382S233000, C382S235000, C382S236000, C382S238000, C382S250000

Reexamination Certificate

active

07145946

ABSTRACT:
A drift reduction method and apparatus. Drift reduction is effected in an MPEG video transcoder by decoding dropped out pixels to form a drift reference frame. The quantization indices in the current macro-block are changed accordingly in a drift reduction process. The compensated quantized frame is then variable length coded to an MPEG bitstream.

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