Video process where part of compressed version of video signal accompanies video signal itself
AssigneesSnell & Wilcox Limited, British Broadcasting Corporation
InventorsMichael James Knee, Nicholas Dominic Wells
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Abstract
After decoding of an MPEG bitstream to the form of a video signal, an information stream signal in the form of all or part of the MPEG bitstream, is transmitted alongside the video signal, embedded in the least significant bit. Recording may simply involve extraction of the embedded MPEG bitstream or, if only part of the bitstream has been embedded, an essentially “dumb” coding operation guided by the information stream signal.
Claims24
A video signal process wherein a video signal is compression encoded to provide a compression encoded signal and wherein a compression encoded signal is compression decoded to provide a compression decoded video signal, characterised in that the compression decoded video signal is modified to carry at least a portion of the compression encoded signal.
A video signal process wherein a video signal is compression encoded to provide a compression encoded signal and wherein a compression encoded signal is compression decoded to provide a video signal, wherein an information signal carrying information for use in downstream re-encoding of the video signal accompanies the video signal and wherein said information signal is transported in an ancillary data channel of the video signal.
Dependencies are inferred from the claim text.