Appeal No. 97-0181
Application No. 08/245,613
brief at pages 2 and 6-8.) We agree with appellants concerning the lack of a teaching of
Longacre to resolve “ambiguity.” Longacre is concerned with determining the location of
the edge of the bar code where there is no ambiguity to be determined/resolved once the
location is determined.
The language of claim 22 recites
(d) . . . each said cell coverage pixel having a gray level value representing
the position of said cell edge crossing subject to an ambiguity as to the
order along said first axis of complementary pixel portions of said cell
coverage pixel respectively inside and outside the area of said cell in said
pixel data image;
(e) utilizing the order and magnitudes of a sequence of said gray level values
for a group of successive pixels along said first axis (i) to resolve said
ambiguity to determine, for each said cell coverage pixel, the order of its
said complementary inside and outside portions along said first axis and (ii)
to derive cell edge position data.
Here, the language of claim 22 requires that the gray level magnitudes are determined and
used with their order to resolve the ambiguity and thereby determine the cell edge
position. The result of Longacre’s determination of edge position is the same, but is not
achieved in the same manner as set forth in the language of claim 22. In summary, we
agree with appellants that there is no need for resolution of ambiguity in Longacre after the
location of cell edge position is determined. (See reply brief at page 9.)
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