Patent ID: 6087850
Filing Date: 2000-07-11
Classification: G06F,H03K

Abstract:
An operation circuit for generating inverted values of first to third inputs to perform a three-input addition of said first to third inputs and said inverted values,said operation circuit comprising:a first store unit for receiving and storing said first input;at least one second store unit for receiving and storing said second input; andat least one third store unit for receiving and storing said third input,wherein each of said first store unit, said at least one second store unit and said at least one third store unit has a closed loop consisting of first and second inverters,an output of said first inverter in said first store unit is said inverted value of said first input,an output of said first inverter in said at least one second store unit is said inverted value of said second input,an output of said first inverter in said at least one third store unit is said inverted value of said third input, andwherein said three-input addition is formed based on outputs of first and second inverters of said first store unit, said at least one second store unit and said at least one third store unit.