Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-02-24
2008-10-28
Urban, Edward (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C439S076100, C455S569100, C455S300000
Reexamination Certificate
active
07444174
ABSTRACT:
A mobile wireless communications device includes a housing and circuit board carried by the housing. RF circuitry and a processor are operative with each other and carried by the circuit board. A receiver speaker and microphone are carried by the housing. Audio circuitry is carried by the circuit board and operative with the RF circuitry and processor. A microphone audio switch and receiver speaker audio switch are carried by the circuit board and are connected with audio connection lines that interconnect the processor. A filter is operative with the audio connection lines and operatively connected to at least one of the microphone audio switch or receiver speaker audio switch to reduce conducted and radiated interfering RF energy from coupling into the audio circuitry.
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Corrigan Michael
Jarmuszewski Perry
Mankaruse George
Zhu Lizhong
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Hannon Christian A
Research in Motion Limited
Urban Edward
LandOfFree
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