Appeal No. 1997-0201
Application No. 08/140,318
compression and encoding. More particularly, Appellant
indicates at pages 14 through 16 of the specification that a
block-matching procedure is utilized for finding a candidate
block within a search range of a previous frame which bears
the strongest resemblance to a reference block in a current
frame. The motion vector is determined by calculating a
positional shift between the blocks in the current and
previous frames.
Claims 4 and 7 are illustrative of the invention and read
as follows:
4. A processing circuit for performing motion detection by
dividing picture-based image signals into blocks, each block
comprising a pre-set number of pixels and for searching for an
entire picture utilizing a block-matching method, with the
block size of a reference block of the current picture
comprising M x N pixels and with the number of candidate
blocks of a previous picture being M x N, said circuit
comprising
a plurality of processing units equal in number to the
product M x N, each of said processing units being adapted for
calculating an evaluation value based on a difference between
a pixel value of said reference block and a pixel value of a
one of said candidate blocks under consideration, said
processing units being arrayed in a M x N matrix
configuration, outputs of said processing units being
connected in a pipeline configuration via a plurality of
additive nodes, the pixel values of said reference block and
the pixel values of said one candidate block under
consideration being processed in a pre-set sequence to thereby
2
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