Appeal No. 1997-3844
Application No. 08/456,963
BACKGROUND
The appellant's invention relates to a motion picture signal compressing apparatus
which encodes the motion vector of the block of a motion picture signal picture as a motion
vector difference. An understanding of the invention can be derived from a reading of
exemplary claim 8, which is reproduced below.
8. Apparatus for compressing a motion picture signal, the motion
picture signal including a current picture which is divided into blocks
including a target block and a plurality of comparison blocks, the apparatus
comprising:
motion detecting means for calculating, from prediction blocks of a
prediction picture and each block of the current picture, a motion vector for
each block of the current picture;
difference determining means for determining a difference between
each prediction block of the prediction picture to provide a prediction error
block;
orthogonal transform means for orthogonally transforming the
prediction error block to provide transform coefficients;
quantizing means for quantizing the transform coefficients to provide
quantized transform coefficients;
local decoding means for locally decoding the quantized transform
coefficients to provide a block of an additional prediction picture;
motion vector encoding means, operating when respective differences
between the motion vector for the target block and each motion vector for the
comparison blocks is outside an allowable range, for generating an encoding of
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