Reference substrate de in automatic test equipment - other modes of teaching

摘要

PURPOSE:To reduce the labor needed for registration and also to improve the inspection accuracy by supplying the parts information needed for inspecting of a circuit board to be inspected based on the difference between the picture of an element circuit board and that of a reference circuit board. CONSTITUTION:The parts 19-1-19-n are set on an element circuit board 18 put on a reference printed circuit board 16-1 at each correct position and in each correct posture. A processing part 12 processes the picture signals of a printed circuit board 16-2 to be inspected supplied from an image pickup part 11 and extracts the inspection parameters of those parts 19-1-19-n respectively according to the extraction reference, the processing procedure, etc., of parameters. These inspection parameters are compared with a reference parameter for decision of the quality of the printed circuit board 16-2 to be inspected. Then the decided quality of the printed circuit board 16-2 is displayed at a decided result output part 26.