Method for providing a personal identification number to a...

Details Method for providing a personal identification number to a... Method for providing a personal identification number to a...

2005-02-01

2005-02-01

Corsaro, Nick (Department: 2684)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S411000

Reexamination Certificate

active

06850777

ABSTRACT:
A method for automatically entering a SIM's PIN in case of a reset or other condition includes the steps of storing (206) in RAM the PIN after it has been verified (204). Whenever a reset condition occurs, the PIN that is cached in RAM (106) is automatically presented to the SIM (214). In order to make sure that the PIN stored in RAM (106) in not corrupted during a reset condition, the inverse (208) or other coded form of the PIN is also stored in RAM (106) as an additional check of the correctness of the stored PIN.

REFERENCES:
patent: 5404580 (1995-04-01), Simpson et al.
patent: 5668875 (1997-09-01), Brown et al.
patent: 5815570 (1998-09-01), Hannon et al.
patent: 5907804 (1999-05-01), Schroderus et al.
patent: 5937068 (1999-08-01), Audebert
patent: 5999811 (1999-12-01), Molne
patent: 6067351 (2000-05-01), Guyot et al.
patent: 6324394 (2001-11-01), Vazvan

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