| 摘要 |
PURPOSE: To designate more than one areas on an etching product pattern, to input a picture there and to locally overlap it with CAD data corresponding to a design pattern. CONSTITUTION: An actual article CAD system which overlaps more than two CAD data and collates them is provided with a navigation function which displays reference CAD data as the design pattern of a lead frame having a clean reference point on a monitor screen, calculates the reference point of the lead frame which corresponds to the reference point, designates prescribed areas A and C on reference CAD data displayed on the monitor screen and therefore designated the photographing areas of the lead frame, which correspond to the area concerned to match the view of a camera with the photographing area designated by referring to the both reference points. Thus, the image of the actual article pattern of the photographing area where the view is matched is inputted and the raster image data is converted into corresponding CAD data. Then, it is overlapped with the designated area of reference CAD data on the monitor screen to display it. |
