| 摘要 |
PURPOSE: To provide the wiring pattern determining method which can reduce crosstalk noise. CONSTITUTION: As for the wiring pattern determining method for the multi- layered circuit board, a signal wiring layer is divided into plural areas and signal propagation directions are allotted to those areas, respectively (13). A wiring process for signal lines is performed while areas are selected without any contradiction among the allotted signal propagation directions. Hence, it is recognized which of a pair of connection pins to be wired is present on the upstream side about the signal propagation direction (15). Next, the upstream-side pin is decided as a search start point and the wiring path up to the downstream-side pin is searched along the signal propagation direction (16). |
