Appeal No. 1999-2018
Application 08/571,204
Because claim 5 in the second group depends indirectly on
independent claim 2, claim 2 is analyzed as representative
of the first group of claims.
Sugiyama
Sugiyama selects a predictive coding mode based on the
lowest prediction error from among forward, backward, and
bidirectional prediction errors. The output of cumulative
adder 28 in Fig. 4 in Sugiyama is the sum of error-squared
values of the preceding frame prediction error values from
subtractor 20 and generally corresponds to Appellant's
forward prediction error Ef, Eqn. 1, except it is the sum of
the difference squared rather than the sum of the absolute
value of the difference. The output of cumulative adder 30
in Fig. 4 is the sum of error-squared values of the
succeeding frame prediction error from subtractor 22 and
generally corresponds to Appellant's backward prediction
error Eb, Eqn. 2, except it is the sum of the difference
squared rather than the sum of the absolute value of the
difference. The output of cumulative adder 29 in Fig. 4 is
the sum of error-squared values of the weighted
preceding/succeeding frame prediction error from
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