Appeal No. 1997-3241
Application 08/442,726
USPQ 303, 309 (Fed. Cir. 1983), cert. denied, 469 U.S. 851
(1984)).
The Examiner asserts on page 6 of the answer that Okamoto
teaches LRU using a counter (item 24) in a translation
lookaside buffer. The Examiner further states that Okamoto
makes use of a comparator (item 70), but that Okamoto does not
make use of a ripple counter. The Examiner relies upon Moyer
to teach a ripple counter. Finally, on page 7 of the answer,
the Examiner asserts that Okamoto teaches in column 4, line 62
through column 5, line 4 and column 5, line 47 through column
6, line 42, that the comparison is made while the counter is
incrementing.
Appellants argue on page 9 of the brief that the
combination of Okamoto and Moyer does not teach the claimed
relationship of overlapping the comparison process and
incrementation of the ripple counter.
As identified above, we find that the scope of claim 17
includes that there is a comparison of the lower order bits of
the ripple counter with a reference value before the higher
order bits of the counter are updated to reflect the count.
13
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