Patent ID: 7449967
Filing Date: 2008-11-11
Classification: H03K

Abstract:
1. An absolute difference processor comprising first and second stochastic pulse generators each comprising a variable signal generator operative to generate a variable signal which varies randomly, and a comparator operative to output a binary signal of High or Low depending on which of one input signal and another input signal is larger or smaller than the other, wherein when the variable signal is inputted as said one input signal to the comparator from the variable signal generator. the comparator stochastically outputs pulses, the number of which corresponds to a magnitude of said another input signal; and an exclusive-OR circuit for outputting an exclusive-OR of an output of the first stochastic pulse generator and an output of the second stochastic pulse generator; wherein when said another input signal and the variable signal which are inputted to the first stochastic pulse generator are V thereby obtaining an absolute difference between the value of said another input signal V