Video signal compression
AssigneesSnell & Wilcox Limited, British Broadcasting Corporation
InventorsMICHAEL JAMES KNEE, NICHOLAS DOMINIC WELLS
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Abstract
After decoding of an MPLFG 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.
Claims22
A video signal process wherein a compression encoded signal is compression decoded for passage along a video pathway, characterised in that the compression encoded signal or a portion thereof, accompanies the video signal along the video pathway.
A video signal process characterised by the transport along a video pathway of a signal, containing all or part of an MPEG or other compression coded bitstream, alongside a video signal decoded from said bitstream.
A process according to any one of the preceding claims, wherein said signal is transported alongside said video signal by encoding in a less significant digital element of said video signal.
A process according to any one of the preceding claims, wherein said signal is error corrected.
Dependencies are inferred from the claim text.