Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-01-04
2005-01-04
Maung, Nay (Department: 2684)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S557000, C455S550100, C379S093060
Reexamination Certificate
active
06839570
ABSTRACT:
A circuit for interfacing a modem in a wireless communication device to a Subscriber Interface Module (SIM) includes a modem controller, a Universal Asynchronous Receiver/Transmitter (UART) connected to the modem controller, a programmable clock circuit adapted to generate a SIM clock and a UART clock independently of one another based on a common clock and a control signal provided to the programmable clock circuit, a reset circuit to generate a SIM reset signal, and a power control circuit to control powering on and off the SIM, all on an integrated circuit chip. The circuit also includes a Bus Interface circuit to interface the modem to the SIM using a common data line.
REFERENCES:
patent: 5327018 (1994-07-01), Karlisch et al.
patent: 5487084 (1996-01-01), Lindholm
patent: 5920850 (1999-07-01), Hunter et al.
patent: 6341069 (2002-01-01), Torlotin
patent: 6584326 (2003-06-01), Boydston et al.
patent: 0525963 (1992-06-01), None
patent: 0896490 (1999-02-01), None
patent: 9712478 (1997-04-01), None
International Search Report, mailed Oct. 22, 2001.
Hutchison, IV James A.
Sutankayo Steven I.
Brown Charles D.
Lele Tanmay
Maung Nay
Qualcomm Incorporated
Seo Howard H.
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