Appeal No. 1998-0752
Application 08/389,096
teaching of determining the numerical difference between
selected ones of the sample amplitude ratio values with
respect to an adjacent sample amplitude ratio value to
generate a set of identifiers which determine whether the
waveform has a rising slope, a falling slope or no change in
slope and then comparing the set of identifiers with plural
predetermined sets of identifiers, each representing the
identity of a character.
With respect to claim 9, we find that Toyama teaches a
method for recognizing (magnetic ink) characters on a
document, comprising scanning the document with a device
operable to generate a signal with an amplitude waveform
peculiar to the shape of the character being scanned (column
3, lines 3-29); determining the amplitude of the waveform at a
predetermined number of positions (column 3, lines 50-60;
sample and hold circuit 17); determining the numerical
difference between adjacent samples to generate a set of
identifiers that indicate rising slope, falling slope, or no
slope change (column 4, lines 25-56; comparators 20, 21, flip-
flops 22, 23); and comparing the set of identifiers with
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