Appeal No. 1997-3241
Application 08/442,726
of the change" in meaning)(quoting Intellicall, Inc. v.
Phonometrics, Inc., 952 F.2d 1384, 1387-88, 21 USPQ2d 1383,
1386 (Fed. Cir. 1992)).
We find that the scope of independent claims 15 and 17
includes using a ripple counter and comparing the output value
of the counter’s lower order bit to a reference value while
the ripple counter is still incrementing. These limitations
are shown in claim 15, “initiating an incrementing of a ripple
counter . . . by clocking a low order bit of said ripple
counter” and “comparing an output value of said low order bit
of said ripple counter with a low order bit value of a ripple
counter broadcast value on a reference bus when said ripple
counter is still incrementing due to said clocking.” These
limitations are also shown in claim 17, “incrementing the
ripple counter” and “during the step of incrementing, after
the first one of the plurality of binary bits is updated and
before the last one of the plurality of binary bits is
updated, comparing the updated first one of the plurality of
binary bits with a corresponding bit broadcast on a reference
bus.”
8
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