Transcoders and methods

Details Transcoders and methods Transcoders and methods

2003-09-17

2008-08-12

Dastouri, Mehrdad (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C348S402100

Reexamination Certificate

active

07412003

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: 5748247 (1998-05-01), Hu
patent: 5796434 (1998-08-01), Lempel
patent: 6452969 (2002-09-01), Yim
patent: 6931064 (2005-08-01), Mori et al.

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