Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-05-10
2011-05-10
Le, Nhan (Department: 2618)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S550100, C455S556100
Reexamination Certificate
active
07941141
ABSTRACT:
A portable electronic device includes a radio frequency receiver; a radio frequency transmitter; and a processing system coupled with the receiver and transmitter. The processing system directs the receiver to scan a radio frequency spectrum for available radio channels over which the transmitter may transmit. The processing system may further direct the receiver to perform a second scan for radio channels which are actively transmitting information. The processing system then selects an available radio channel as the radio channel best suited for use by the transmitter to transmit information to the external audio system. The processing system may select a transmission frequency which is spectrally distant from the active radio channels and/or may take into account a transmission profile of the transmitter to select a frequency that does not interfere with the reception of incoming radio signals.
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Bridges Jason D.
Shoykhet Eugene L.
Garmin Switzerland GmbH
Korte Samuel M.
Le Nhan
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