Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1974-11-01
1977-01-11
Griffin, Robert L.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
178DIG37, 250223B, 356237, 356239, 356240, H04N 718
Patent
active
040028232
ABSTRACT:
A method and apparatus for detecting defects in articles of manufacture such as glassware having lettering, mold marks and coloring is disclosed with the apparatus including a semi-diffused light source positioned adjacent one side of and optically spaced from the article being inspected for illuminating the article. A video camera is positioned on the opposite side of the article from the diffused light source and scans the illuminated article in order to produce a video signal indicative of the difference in the refraction characteristics of the article to thereby indicate the presence or absence of defects in the glassware sample. Circuitry is disclosed for discriminating between true defects and lettering, mold marks and coloring normally associated with the article. In the event there is a defect, an electrical processing circuit connected to the video camera and responsive to the video signal is provided for actuating a glassware rejection mechanism. Circuit means are also disclosed for inspecting round objects, such as the bottoms of round jars or glasses.
REFERENCES:
patent: 2798605 (1957-07-01), Richards
patent: 3049588 (1962-08-01), Barnett
patent: 3560096 (1971-02-01), Watson et al.
patent: 3579249 (1971-05-01), Dewey et al.
patent: 3647961 (1972-03-01), Blitchington et al.
patent: 3746784 (1973-07-01), Van Oosterhout
Ball Corporation
Coles Edward L.
Griffin Robert L.
Haynes James D.
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