Appeal No. 2000-1520
Application No. 08/768,715 Page 7
control of control circuit 35 (col. 13, lines 43-51). We find
from these teachings of Hirai that incoming calls are registered
in the memory according to a FIFO rule.
We additionally find that Figa discloses scan key 29 and
reverse key 31 which are search keys used to search directory 16
or logging module 22. Scan key 29 initiates a search starting
with the most recent entry stored in either the directory or the
logging module and proceeds chronologically backward to the
oldest entry stored each time that key is pressed i.e., LIFO
(col. 4, lines 52-60). Figa further discloses that reverse key
31 chronologically proceeds with the search in the opposite
direction, i.e., FIFO (col. col. 4, lines 60-62). As shown in
figure 2, a user can choose between displaying the stored numbers
according to LIFO and/or FIFO.
From these teachings of Figa that LIFO and FIFO can both be
used to quickly search for the telephone number of a caller, we
find that an artisan would have been taught to substitute the
LIFO of Figa for the FIFO of Hirai to enable the user to look
first at the most recent call received before looking at other
calls, as advanced by the examiner. We additionally find that in
view of the teachings of Figa, a skilled artisan would have been
taught to add the LIFO of Figa to the FIFO of Hirai to provide
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