Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2007-02-20
2007-02-20
Rao, Andy (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240250, C375S240260
Reexamination Certificate
active
10888479
ABSTRACT:
A low-complexity spatial downscaling video transcoder and method thereof are disclosed. The transcoder comprises a decoder having a reduced DCT-MC unit, a DCT-domain downscaling unit, and an encoder. The decoder performs the DCT-MC operation at a reduced-resolution for P-/B-frames in an MPEG coded bit-stream. The DCT-domain downscaling unit is used for spatial downscaling in the DCT-domain. After the downscaling and the motion vectors re-sampling, the encoder determines the encoding modes and outputs the encoded bit-stream. Compared with the original CDDT, this invention can achieve significant computation reduction and speeds up the transcoder without any quality degradation.
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Chou Yeh-Kai
Lee Yuh-Ruey
Lin Chia-Wen
Industrial Technology Research Institute
Rao Andy
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