The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 1979
Filed:
Dec. 19, 1977
Donald H McMahon, Carlisle, MA (US);
Colin G Whitney, Woodland Hills, CA (US);
Sperry Rand Corporation, New York, NY (US);
Abstract
A method and apparatus for generating a digital image representation of a printed circuit board. The board has a substrate of insulating material. A pattern of metallic conductors is disposed on a surface of the insulating material. A beam of light energy scans this surface in a predetermined pattern. The beam has an energy level high enough to induce a detectable fluorescence in the surface of the insulating material. This fluorescence is detected and a binary signal is generated to indicate the presence or absence of fluorescence as the beam scans the surface. The binary signal is synchronized with the scanning of the beam such that a binary image representation of the board's surface is provided.