According to a presently preferred embodiment of the present invention, a method for processing a incoming signal comprising the steps of selecting from a first signal a first plurality of bits of signal information to be processed, selecting from a second signal a second plurality of bits of signal...http://www.google.ca/patents/US5894568?utm_source=gb-gplus-sharePatent US5894568 - Apparatus and method for computing a difference in a digital processing system
