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Aperture control system for printed circuit board fabrication

  • US 5,751,594 A
  • Filed: 03/16/1993
  • Issued: 05/12/1998
  • Est. Priority Date: 03/16/1993
  • Status: Expired due to Term
First Claim
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1. A PCB laser plotter data control system comprising:

  • a computer aided design workstation for generating CAD aperture data in any one of a plurality of CAD formats for one of at least first and second types of PCB laser plotters;

    a data converter that is operative for said first type of PCB laser plotter for reading said CAD aperture data in said any one of a plurality of CAD formats, for comparing said CAD aperture data in said any one of a plurality of CAD formats to entries in a conversion table of allowable conversion values, and for providing converted aperture data in a prespecified one of a plurality of PCB laser plotter formats from corresponding ones of said allowable conversion values;

    said data converter being operative for said second type of PCB laser plotter for reading said CAD aperture data in said any one of a plurality of CAD formats, for comparing said CAD aperture data in said any one of a plurality of CAD formats to geometric shapes having predefined conversion values, and for providing converted aperture data in a prespecified one of a plurality of PCB laser plotter formats from corresponding ones of said predefined conversion values;

    a PCB laser plotter of one of said at least first and second types of PCB laser plotters disposed in a location remote from said data converter, said PCB laser plotter employing said converted aperture data in said prespecified one of said plurality of PCB laser plotter formats to control a laser beam used in the generation of a PCB mask; and

    a modem operative to transmit said converted aperture data from said data converter directly to said PCB laser plotter for the generation of said PCB mask by said PCB laser plotter.

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