Telecommunications – Radiotelephone system – Security or fraud prevention
Reexamination Certificate
2006-10-03
2006-10-03
Corsaro, Nick (Department: 2617)
Telecommunications
Radiotelephone system
Security or fraud prevention
C455S414100, C455S414200, C455S414300, C455S425000, C455S411000, C705S405000, C705S044000, C705S064000
Reexamination Certificate
active
07116969
ABSTRACT:
A method of providing a secure clock in a communication device in contact with a communication system includes detecting a clock event whenever a clock event occurs; initializing a secure clock and setting a secure clock flag to TRUE; and setting the secure clock to a secure clock time. A secure clock mechanism for use in a communication device which is in contact with a communication system includes real-time clock hardware; programmable memory and non-volatile memory; and a back-up battery for powering the secure clock mechanism; a clock event detection mechanism for detecting clock events, which are taken from a group of clock events consisting of user clock events and system clock events; a secure clock initializing mechanism for setting the secure clock and for setting a secure clock flag to TRUE; and a secure clock setting mechainism for setting the secure clock to a secure clock time.
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Corsaro Nick
Herrera Diego
Sharp Laboratories of America Inc.
Varitz PC Robert D.
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