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Michael James Knee, Bruce Fairbairn Devlin, Nicholas Dominic Wells: Video compression. Snell & Wilcox, British Broadcasting Corporation, Kenneth R Allen, Townsend and Townsend and Crew, September 4, 2001: US06285716 (36 worldwide citation)

An MPEG-2 or other compressed video stream (CP) can be manipulated as separate information bus (IB) and coefficient (CP*) streams. The information bus stream (IB) contains motion vector information but also information derived from a previous decoding operation (


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Nicholas Dominic Wells: Processing coded video. British Broadcasting Corporation, McDermott Will & Emery, May 25, 2004: US06741290 (28 worldwide citation)

A method of processing coded video, for example by inserting generated frames, or adjusting values in timing fields, or adjusting the time at which it is output, to adjust the timing of output of decoded video from a decoder receiving the coded video is disclosed, together with corresponding apparat ...


3
Michael James Knee, Nicholas Dominic Wells: Video process where part of compressed version of video signal accompanies video signal itself. Snell & Wilcox, British Broadcasting Corporation, McDermott Will & Emery, January 6, 2004: US06674802 (19 worldwide citation)

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 o ...


4
Peter John Brightwell, Nicholas Dominic Wells, Phillip Nicholas Tudor: Video processing system also compressing coding decision data. British Broadcasting Corporation, Michael Best & Friedrich, June 10, 2003: US06577682 (15 worldwide citation)

An MPEG2 decoded video signal is accompanied by a representation of the coding decisions to aid downstream re-encoding. The representation is MPEG compliant bit modified to reduce the number of bits.


5
Peter John Brightwell, Nicholas Dominic Wells, Phillip Nicholas Tudor: Video processing system also compressing coding decision data. British Broadcasting Corporation, Michael Best & Friedrich, October 17, 2006: US07123657 (14 worldwide citation)

An MPEG2 decoded video signal is accompanied by a representation of the coding decisions to aid downstream re-encoding. The representation is an MPEG compliant bit modified to reduce the number of bits.


6
Oliver Hartwig Werner, Nicholas Dominic Wells, Michael James Knee: Digital signal compression encoding with improved quantisation. British Broadcasting Corporation, Snell & Wilcox, McDermott Will & Emery, December 23, 2003: US06668088 (13 worldwide citation)

In compression encoding of a digital signal, such as MPEG2, transform coefficients are quantised with the lower bound of each interval being controlled by a parameter &lgr;. In the MPEG2 reference coder, for example, &lgr;=0.75. Because the quantised coefficients are variable length coded, im ...


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Jonathan Highton Stott, Nicholas Dominic Wells: Method and apparatus for reduction of unwanted feedback. British Broadcasting Corporation, George W Neuner, Dike Bronstein Roberts & Cushman, July 31, 2001: US06269165 (13 worldwide citation)

The feedback caused between the output and the input of an amplification path is reduced by providing a delay in the amplification path, passing through the amplification path a signal having an auto-correlation function which is substantially a delta function, correlating the said signal before bei ...


9
Michael James Knee, Nicholas Dominic Wells: High definition television coder/decoder which divides an HDTV signal into stripes for individual processing. British Broadcasting Corporation, Robert F O Connell, Kevin J Fournier, Milton Oliver, June 17, 1997: US05640210 (11 worldwide citation)

High definition television coder/decoder a high definition coder or decoder includes a number of parallel sub-decoders or coders. The image to be coded or decoded is divided into a number of stripes, a given stripe being coded or decoded by a single sub-coder or sub-decoder. Every N.sup.th stripe is ...


10
Peter John Brightwell, Stephen John Dancer, Philip Nicholas Tudor, Nicholas Dominic Wells, Oliver Hartwig Werner: Switching compressed video bitstreams. British Broadcasting Corporation, McDermott Will & Emery, December 14, 2004: US06831949 (9 worldwide citation)

An MPEG bitstream is switched in the video domain in between a decoder and recoder pair which remain continuously in operation but which are transparent through re-use in the recoder of coding decision taken in the upstream coding of the MPEG bitstream and inferred in the decoder of the switch. Arou ...