Patent ID: 6255859
Filing Date: 2001-07-03
Classification: G06F,H03K,H03M,H04L,Y02D

Abstract:
A system for detecting a transition in an incoming signal from a known previous logical state, comprising:an output terminal providing an output signal logically equal to the previous logical state;a first amplifier for amplifying the difference between the incoming signal and an oscillating reference to generate a first result;a second amplifier for amplifying the difference between the incoming signal and a complement of the oscillating reference to generate a second result;a first switch coupled to the first amplifier for coupling the first result to the output terminal based on first criteria;a second switch coupled to the second amplifier for coupling the second result to the output terminal based on second criteria;a first controller for controlling the first criteria based on a comparison of the oscillating reference and the output signal; anda second controller for controlling the second criteria based on a comparison of the complement and the output signal.