APPARATUS FOR CALCULATING AN ABSOLUTE DIFFERENCE

摘要

PURPOSE: An absolute difference operation device is provided to use one adder and one comparator, thereby performing absolute difference operation with a low logic surface load. CONSTITUTION: A comparator(410) compares the size between two integers. According to the comparing result, the first and the second selectors(420,430) respectively select/output one among two integers. An inverter(440) mending-process a selection result value of the second selector. An adder(450) adds 1 and a value which is mending-processes by the inverter and the selection result value of the first selector.