Patent ID: 7434074

Claim:
A logic circuit system comprising: a programmable logic circuit having a circuit configuration that is reconfigurable during operation; a circuit configuration information supplier configured to supply circuit configuration information about plural unit circuits to said programmable logic circuit; a change controller configured to change the circuit configuration of said programmable logic circuit to any one of said plural unit circuits; an operation time measurer configured to measure operation times of said plural unit circuits on said programmable logic circuit; and a clock-and-voltage supplier configured to obtain both a frequency using said operation times and a voltage value using said operation times, and supply the clock signal having the frequency and the voltage having the voltage value to said programmable logic circuit, wherein said clock-and-voltage supplier includes a processing amount calculator configured to obtain a total amount of processing executed by said programmable logic circuit within a predetermined period, using said operation times, a frequency calculator configured to estimate the frequency of the clock signal necessary for said programmable logic circuit to perform said total amount of processing, and a voltage value calculator to calculate the voltage value of the voltage necessary to operate said programmable logic circuit with the clock signal of the calculated frequency.