Patent ID: 6167252
Filing Date: 2000-12-26
Classification: H04W

Abstract:
A clone-resistant apparatus using electronic serial number (""ESN"") security, comprising:a host controller;a digital signal processor (""DSP"") having a digital systems interface coupled to the host controller and a radio frequency interface;a radio frequency (""RF"") section coupled to the radio frequency interface;an ESN memory coupled to the digital signal processormeans for placing the ESN in a first or second position in a wide band data (""WBD"") command;means for using a first binary value to identify whether the ESN is present in the WBD command;means for using a second binary value to identify whether the ESN is present in the first or the second position;means for examining the first binary value using the DSP to determine whether a substitution should be made; andmeans for examining the second binary value using the DSP to determine whether the substitution should be made to the first location or to the second location when the means for examining the first binary value indicates that a substitution should be made.