Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2004-06-18
2009-10-13
An, Shawn (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C372S038060, C382S235000, C382S244000, C382S239000, C725S067000, C725S070000, C725S068000, C725S118000, C725S071000, C725S131000
Reexamination Certificate
active
07602846
ABSTRACT:
A method and apparatus for transporting a video program in compressed form from a source location to a second location. The method comprises receiving at an intermediate location a first compressed version of the video program using a first compression method, transported from the source location to an intermediate location over a first segment that includes a link of a first type. The method further comprises transcoding the first compressed version to a second compressed version compressed using a second compression method that is in relatively widespread use. The method further comprises sending the second compressed version to the second location over a link of a second type. The link of the second type includes infrastructure to transport video program streams compressed by the second compression method. The first compression method can achieve a higher compression ratio that the second compression method for approximately the same image quality.
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Chen Wen-hsiung
Graham Philip R.
Pelton Gregory D.
Wu Fang
An Shawn
Cisco Technology Inc.
Inventek
Rosenfeld Dov
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