Appeal 2007-0482
Application 10/256,683
FINDINGS OF FACT
Appellant invented a method and apparatus for displaying the
presence and locations of subscribers of a communication system on a
portable device of a fellow subscriber. (Specification 5). As depicted in
Figure 1, a subscriber in a first geographic area issues a request from a
wireless mobile station (Figure 5) to a subscriber locator (11) to locate
fellow subscribers in a second geographic area. The subscriber locator (11),
in response, accesses the home location register (14) and the visiting
location register (16) to dynamically generate a displayable image indicating
the presence and location of each mobile subscriber in a particular area.
(Specification 9, 10). Alternatively, in cases where displayable images in
pre-selected geographic areas have already been generated ahead of time, the
subscriber locator (11) processes in real time such requests to locate the
presence of fellow subscribers. (Specification 10, 11). The subscriber
locator (11) subsequently displays the generated location images of
subscribers of the wireless communication system on the mobile station of
the requesting subscriber.
Hashimoto discloses a position information management system for
allowing holders of portable remote terminals to mutually locate fellow
terminal holders. (Page 25, ll. 1-4). As depicted in Figure 6, a terminal
holder (11) instructs its own terminal to display its position relative to that of
a third party (S33). Then, the instructing terminal issues a request to a
central system to obtain the current position of the holder(s) of another
portable terminal (S34). In response, the central system obtains the
requested information from the third party mobile device (S40).
Alternatively, the central system estimates the location of the third party
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