Radiotelephone controller configured for coresident secure...

Details Radiotelephone controller configured for coresident secure... Radiotelephone controller configured for coresident secure...

H - Electricity

04

B

325/17

H04B 1/40 (2006.01) H04Q 7/32 (2006.01)

Patent

CA 2033651

A controller (105) for a radiotelephone (100) having the capability of operation in both a secure mode for call authorization and a nonsecure mode for user interface is disclosed. The nonsecure mode and secure mode of operation are both resident in a single microcontroller (201) which runs the nonsecure operations until a requirement for the secure operation is requested during call placement. The nonsecure mode is disabled during the period of time the secure mode is operational and is reenabled upon completion of the secure mode operation. The secure mode cannot be accessed externally to the microcontroller (201).

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