Patent ID: 7646333

Claim:
An electronic circuit for generating pseudo-random pulse intervals, the electronic circuit comprising: a randomizing bit generator configured to generate a randomizing bit sequence based on a sequence selection input signal, the randomizing bit generator including: a counter operable to provide an individual starting count for the randomizing bit sequence, and a parity generator responsive to an output of the counter; and a pseudo-random number generator responsive to the randomizing bit generator, the pseudo-random number generator operable to provide at least one pulsed signal based at least in part on the randomizing bit sequence of the randomizing bit generator; wherein the electronic circuit is operable to substantially eliminate interference in a series of pulsed signal transmissions comprising the at least one pulsed signal from each of two or more navigation devices, and wherein each of the pulsed signals from each of the two or more navigation devices is separated by an automatically adjustable time interval.