Video transcoder with spatial resolution reduction and drift...

Details Video transcoder with spatial resolution reduction and drift... Video transcoder with spatial resolution reduction and drift...

2007-01-30

2007-01-30

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Bandwidth reduction or expansion

C382S232000, C382S250000

Reexamination Certificate

active

10046366

ABSTRACT:
A method and system reduces the spatial resolution of a compressed bitstream of a sequence of frames of a video signal by first decoding the frames, and storing the decoded frames in a first frame buffer. While performing the decoding, motion compensating is performed with full resolution motion vectors of the stored decoded frames. The decoded frames are then down-sampled to a reduced resolution, and stored in a second frame buffer. The reduced resolution frames are partially encoded to produce a reduced resolution compressed bitstream of the video. While performing the partial encoding, motion compensation is performed with reduced resolution motion vectors of the stored reduced resolution frames.

REFERENCES:
patent: 5940130 (1999-08-01), Nilsson et al.
patent: 6310915 (2001-10-01), Wells et al.
patent: 6526099 (2003-02-01), Christopoulos et al.
patent: 6625216 (2003-09-01), Zhu
patent: 6647061 (2003-11-01), Panusopone et al.
patent: 2002/0094030 (2002-07-01), Kim
patent: 2002/0126752 (2002-09-01), Kim

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