Appeal No. 2002-2295
Application 08/988,457
communication channels for transmission of the broadcast (step
S330). See pages 9 and 10 of Appellants’ specification.
Aircraft unit 500 then transmits an acknowledgment signal back to
the ground switching station 200 (step S340). If the
acknowledgment signal indicates aircraft unit 500 can receive the
file, ground switching station 200 transmits the file over the
selected channel (step S350). When ground switching station 200
has finished the file transfer, telecommunications unit 520 then
routes the data to its intended destination on aircraft unit 500
(step S360). Figure 4 is a flow diagram showing a batch process
used to update the application software on-board aircraft units
500. See page 10 of Appellants’ specification.
Independent claim 1 present in the application is reproduced
as follows:
1. A method for transferring data in a communication
system, the communication system comprising a central station, a
plurality of mobile units, and a plurality of radio base
stations, wherein the central station communicates with each of
the plurality of mobile units, the method comprising the steps
of:
receiving from each mobile unit registration information
identifying a radio base station currently in communication with
the mobile unit;
storing the registration information in a registration
database located at the central station, such that the
registration database stores information identifying the
4
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