Patent ID: 7805689

Claim:
A circuit board information acquisition and conversion method, comprising: a circuit board design information acquisition process acquiring circuit board design information including via hole information that includes a via hole dimension, a via hole position and a via hole thermal conductivity for each via hole of a plurality of via holes in heat propagation paths in a circuit board, the circuit board design information acquisition process being performed by a computer; a merger determination process calculating distances between via holes in a circuit board model using the via hole information of the circuit board design information and performing merger determination of whether or not the plurality of via holes are to be merged to become one via hole in the circuit board model using the calculated distances; and an analysis model conversion process merging the plurality of via holes to become one via hole in the circuit board model using the circuit board design information and a result of the merger determination, determining a thermal conductivity value of the merged via holes using a value of the thermal conductivity of each of the via holes before being merged to become one via hole, and creating a thermal analysis model using the one via hole.