Patent ID: 7387235
Filing Date: 2008-06-17
Classification: B60R

Abstract:
1. A method of programming memory contents in an electronic key using a base station, said method comprising the steps of: transferring a pre-existing secret code value to said electronic key, said pre-existing code value having a predetermined number of data segments; said electronic key comparing a received secret code value with a stored secret code value in a memory location within said electronic key; if said comparison detects a non-match, then suspending interaction with said base station; if said comparison detects a match, then continuing interaction with said base station to accept a new secret code value transmitted from said base station to said electronic key according to said data segments; and said base station verifying acceptance of said new secret code value and if said new secret code value is not verified then reprogramming said electronic key using the steps comprising: if said comparison detects a match, then continuing interaction with said base station to accept said new secret code value after re-transmission from said base station to said electronic key according to said data segments.