Appeal No. 2003-0495 Page 2
Application No. 09/256,543
communicating with the base. When the handset is placed in a cradle of the base, the
battery is charged. (Spec. at 2.) When the handset is removed from the base, a user
can roam about while making or receiving calls if he stays within range of the base.
During a standby mode, the handset periodically powers-up and scans channels
for incoming calls. According to the appellants, heretofore, scanning for incoming calls
has been accomplished by stepping through a sequence of channels, determining the
presence or absence of a known synchronization signal at each channel. The
appellants opine that sequentially scanning individual channels for the synchronization
signal "may sometimes prove to be inefficient, resulting in more power consumption
from the battery while the handset . . . is in the standby mode." (Id. at 3.)
In contrast, the appellants' handset sequentially steps through subsets of a
plurality of channels, wherein each subset includes more than one channel. Figure 4A
of their specification, for example, shows a subset comprising three channels. The
handset "substantially simultaneously" searches each subset for a synchronization
signal. The Figure, for example, shows a synchronization signal in the middle channel.
(Appeal Br., § V.1)
1The appellants should number the pages of their briefs to facilitate citing thereto.
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