Transcoding of video signals

Details Transcoding of video signals Transcoding of video signals

2008-01-29

2008-01-29

Philippe, Gims (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240250

Reexamination Certificate

active

10471313

ABSTRACT:
A method of transcoding from H.263 coded video frames to H.261 coded video frames, the method comprising for each INTER coded macro block (MB) of each frame, determining whether a component of the motion vector (MV) of the MB has a half pixel value, if yes, carrying out a MV search using the current H.263 decoded MB and a previous decoded frame to determine a new MV, the MV search being restricted to the vicinity of the H.263 coded MV, and coding the MB into an H.261 format using the new MV.

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Video transcoding technology for wireless communication systems, Iwasaki et al., Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st vol. 2, May 15-18, 2000 pp. 1577-1580 vol. 2 Digital Object Identifier 10.1109/VETECS.2000.851392.

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