Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-12-27
2005-12-27
Philippe, Gims (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C382S281000, C348S398100
Reexamination Certificate
active
06980597
ABSTRACT:
A system for efficient bit plane coding of transform coefficient data, such as DCT data used in a video coding system. Decimal values for the transform coefficients are converted to binary values, where each bit occupies a corresponding bit plane, from the most significant bit to the least significant bit. One bit from each coefficient is provided in a common bit plane. A one-bit flag or codeword is used for coding one or more initial all-zero bit planes, while another one-bit flag is used for designating the first subsequent non-all-zero plane. For the first non-all-zero plane, a reduced coding table is used to provide codewords that follow the one-bit flag.
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Fan Ling; Weiping Li; Hongqiao Sun: “Bitplane coding of DCT coefficients for image and video compression,” Proceedings of the SPIE, vol. 3653, Jan. 27, 1999, pp. 500-508.
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ISO/IEC JTC1/SC29/WG11, MPEG98/M4204, Dec., 1998.
General Instrument Corporation
Marley Robert P.
Philippe Gims
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