Transcoders and methods

Details Transcoders and methods Transcoders and methods

2008-07-02

2010-12-14

An, Shawn (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240250, C375S240260, C375S240240, C375S240200, C375S240120, C382S233000, C382S235000, C382S238000, C382S250000, C382S236000

Reexamination Certificate

active

07852941

ABSTRACT:
Transcoding as from MPEG-2 SDTV to MPEG-4 CIF reuses motion vectors and downsamples in the frequency (DCT) domain with differing treatments of frame-DCT and field-DCT blocks, and alternatively uses de-interlacing IDCT with respect to the row dimension plus deferred column downsampling for reference frame blocks.

REFERENCES:
patent: 6931064 (2005-08-01), Mori et al.
patent: 6999512 (2006-02-01), Yoo et al.
patent: 7203237 (2007-04-01), Fernandes

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