Appeal 2007-0869
Application 10/648,587
Product Information Data Sheet for BC21313A both describe single chip
Bluetooth devices. These data sheets identify that the Bluetooth is provided
input from an external oscillator. We find no disclosure in these documents,
nor has the Examiner identified any disclosure, of the same external
oscillator being used by other systems.
We find that it is common knowledge that computer systems often
make use of a master system clock (an oscillator) which provides input to all
timing circuits. The system clock in such systems is typically required so
that events and data transfer within the computer system can be coordinated.
ANALYSIS
Independent claim 1 recites “one and only one reference oscillator in
the housing providing mixing signals to the GPS receiver and the wireless
transceiver, the GPS receiver and wireless transceiver not sharing any
components other than the reference oscillator.” Independent claim 26
recites the limitation “wherein the wireless transceiver means and the GPS
receiver share a common oscillator and only the common oscillator.” Thus,
the scope of independent claims 1, and 26 require a GPS unit share an
oscillator with a transceiver and that the oscillator is the only element shared
by the GPS unit and transceiver. The Examiner relies upon Peterzell for this
teaching. As discussed above we find that Peterzell teaches a device which
contains a GPS unit and a transceiver that have separate signal paths.
However, we find no teaching or suggestion in Peterzell that the two units
should both receive input from the same reference oscillator. Similarly we
find no teaching or suggestion in McCarthy of sharing an oscillator as
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