Patent ID: 7448002

Claim:
An inspection system applicable to a data processing device installed with a PCB (printed circuit board) design software and a display unit, wherein the PCB design software is used for creating PCB totems for a multi-layer PCB, the display unit is used to display an user interface provided by the PCB design software in top view projection, the user interface comprising a plurality of wires and a plurality of planes for specific uses, the inspection system comprising: a database for storing planar coordinate ranges of the planes respectively corresponding to the wires allowed be routed thereon; a coordinate range acquiring module for acquiring wire coordinate ranges and planar coordinate ranges corresponding to the plurality of wires on the user interface each time when a user operates the user interface; a comparing module for receiving the wire coordinate ranges and planar coordinate ranges acquired by the coordinate range acquiring module each time when a user operates the user interface, and determining whether each of the wire coordinate ranges only corresponds to one of the planar coordinate ranges, if no, an alerting signal is outputted, otherwise, if each of the wire coordinate ranges corresponds to only one of the planar coordinate ranges, the comparing module further determining whether each of the planar coordinate ranges corresponding to a wire coordinate range is located inside a corresponding planar coordinate range stored in the database, if no, an alerting signal is outputted; and a display control module which displays the wires corresponding to the wire coordinate ranges that do not meet the above mentioned conditions on the display unit of the data processing device by using a design rule check (DRC) error reporting method according to the alert signal in a predefined way for purpose of inspection.