Patent ID: 7912143

Claim:
A method for encoding data bits for transmission comprising: (a) generating a first biphasic pulse having a first portion of a first polarity followed by a second portion of a second polarity; (b) waiting a first period of time following the second portion of the first biphasic pulse during which period of time no amplitude dependent data bits are encoding, the duration of the first period of time being selected to represent a first plurality of data bits; (c) generating a second biphasic pulse following the period of time, the second biphasic pulse having a third portion of the second polarity followed by a fourth portion of the first polarity; (d) waiting a second period of time following the fourth portion of the second biphasic pulse during which period of time no amplitude dependent data bits are encoding, the duration of the second period of time being selected to represent a second plurality of data bits; (e) repeating steps (a) and (b) with a third period of time representing a third plurality of data bits; and (f) repeating steps (c) and (d) with a fourth period of time representing a fourth plurality of data bits.