Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2006-07-18
2006-07-18
Diep, Nhon (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
Reexamination Certificate
active
07079578
ABSTRACT:
A transcoder system for compressed digital video bitstreams comprising the three frame types: I-frames, P-frames and B-frames, is disclosed. The system includes a picture reader decoder to ascertain and select the type, size or estimated quality of each frame, or the DSP processing power of each frame prior to transcoding. The system also includes a T1transcoder for processing B-frames and a picture decision block for separating all I-frames and P-frames from B-frames in the case where the frame type is selected. Another component is a remerge block for recombining the output of B-frames from said T1transcoder with the untranscoded P-frames and I-frames into a reconstituted output bitstream, such that only the B-frames are processed by the much faster T1transcoder, thereby achieving substantial improvement in the transcoding throughput speed.
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Diep Nhon
Langer, Pat. Atty. Edward
Scopus Network Technologies Ltd.
Shiboleth, Yisraeli, Roberts, Zisman & Co
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