Patent ID: 6321168
Filing Date: 2001-11-20
Classification: G06F

Abstract:
A means for calculating a power consumption characteristic comprising:means for memorizing a circuit network having a transistor and an input wiring and an output wiring;a means for memorizing a circuit input which is a logical change given to the input wiring in said circuit network;a means for making and memorizing a partial circuit into which a connection between a gate terminal and a terminal except a gate terminal is separated while holding a connection between gate terminals and a connection between terminals except a gate terminal at the transistor composing the circuit network memorized by said means for memorizing a circuit network;a means for making and memorizing a partial circuit connection, which is a connection between said partial circuits, while considering a function and an adjustment of said means for making and memorizing a partial circuit;a means for calculating and memorizing an input/output relation of a partial circuit, which is a correspondence of a logical value in a partial circuit input wiring for transmitting the logical value from outside to said partial circuit to a logical value in a partial circuit output wiring for transmitting the logical value from said partial circuit to outside, in each partial circuit, based on a memory in said means for making and memorizing a partial circuit;a means for calculating and memorizing a relation of a circuit input to a partial circuit input, which is a correspondence of the logical change given to the input wiring in said circuit network to an input change m each partial circuit, based on a memory in said means for memorizing a circuit input and a memory in said means for making and memorizing a partial circuit connection and a memory in said means for calculating and memorizing an input/output relation of a partial circuit;a means for calculating and memorizing a relation of a partial circuit input to a power consumption, which is a correspondence of an input logical change column in said partial circuit to a power consumption in each input logical change, through a predetermined procedure, based on a memory in said means for making and memorizing a partial circuit and a memory in said means for calculating and memorizing an input/output relation of a partial circuit; anda means for calculating and memorizing a circuit power consumption by regarding a sum of a power consumption at each partial circuit input corresponding to a circuit input as a power consumption in a circuit corresponding to the circuit input, based on a memory in said means for calculating and memorizing a relation of a circuit input to a partial circuit input and a memory in said means for calculating and memorizing a relation of a partial circuit input to a power consumption.