Patent ID: 8843866

Claim:
A design support apparatus, comprising: a memory; and a processor coupled to the memory, wherein the processor executes a process comprising: when a power line runs parallel between two signal lines in a circuit, partitioning a direction in which the two signal lines extend into a plurality of sections based on a position of the power line running parallel; calculating a crosstalk noise value when the power line does not run parallel, for each of the plurality of sections; calculating a coefficient that becomes larger with decrease in an area of the power line included in an area between the two signal lines based on a relative positional relationship between the two signal lines and the power line in the section, for each of the plurality of sections; correcting the crosstalk noise value corresponding to each section, using the coefficient corresponding to each section, for each of the plurality of sections; and calculating a total of the crosstalk noise values corrected and corresponding respectively to the plurality of sections, as a crosstalk noise value between the two signal lines.