Appeal No. 2002-1632
Application No. 08/941,785
BACKGROUND
Appellant’s invention is directed to a method of data
compression for coding of video image signals. Data compression
is performed by comparing a coding macroblock to at least one
other reference macroblock in order to determine a difference and
encoding the coding macroblock with the difference
(specification, page 7). Thus, greater efficiency in video
compression by reducing spatial redundancy may be achieved
through macroblock intraframe coding (specification, page 3).
Representative independent claim 1 is reproduced below:
1. A method of data compression for intra-frame
coding with an intra-frame, comprising the steps, performed
by a processor, of:
receiving a plurality of macroblocks from a single
frame;
selecting one of the macroblocks from the frame;
determining a difference between the selected
macroblock and at least one other macroblock from the same
frame in an adjacent positional relationship to the selected
macroblock; and
encoding the selected macroblock based on the
difference without reference to any predicted frame to
reduce spatial redundancy in the intra-frame coding,
wherein the step of encoding the selected macroblock
based on the difference includes the substep of
assigning a difference bit designating that the
selected macroblock is encoded with the difference.
2
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