Television – Special applications – Flaw detector
Patent
1993-10-26
1996-05-14
Chin, Tommy P.
Television
Special applications
Flaw detector
348127, 348125, 348129, H04N 118, H04N 947
Patent
active
055172342
ABSTRACT:
A method and apparatus used with a printed circuit board (PCB) defect detection system generates a reference database image of the PCB having tolerances for each individual PCB feature wherein a tolerance database of at least three states in which each color is weighted and adjacent pixels are grouped into arrays or "bins". An error signal is generated when the sum of the pixel weights in a bin exceeds a preselected threshold.
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Davidson Bruce L.
Gerber H. Joseph
Kohler James P.
Seniff Dana W.
Snietka Scott P.
Chin Tommy P.
Gerber Systems Corporation
Rao Anand S.
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