Patent ID: 7533005

Claim:
A system for checking a reference plane of a signal trace in a PCB, the system comprising: a database configured for storing a plurality of signal files, each signal file comprising information of all signals in the PCB, each of the signal files constituting one or more signal groups, and each of the one or more signal groups having a same bus; a signal filter configured for filtering a signal group to be checked from a signal file; a signal trace selecting unit configured for selecting one signal from the signal group, and selecting a trace corresponding to the signal; a reference plane checking unit configured for checking the integrity of a reference plane that is nearest to the selected signal trace, according to checked items, through orthographically projecting the selected signal trace to the reference plane, and checking a relationship between the reference plane and the projection of the selected signal trace; a display unit configured for displaying a checked result performed by the reference plane checking unit; and a report generating unit configured for generating a report of all the signals in the group, and showing the check result of each reference plane corresponding to each signal trace.