System and method for automatic optical inspection
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United States of America Patent
Stats
-
Jan 9, 1996
Issued Date -
N/A
app pub date -
Oct 17, 1994
filing date -
Oct 22, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An optical inspection system for inspecting faults on circuit boards like printed circuit boards and wire scribed circuit boards is disclosed. A video camera for receiving desired images of hole sites on a wire circuit board is provided. The camera converts each image to electrical video signals. A frame grabber converts electrical video signals to a plurality of pixels and stores information representing color element values contained in each of the pixels. A panel feature detector receives the color element values of the pixel that has to be analyzed and provides a wire indication when the color element value of the pixel corresponds to the wire feature. A fault detector circuit receives the wire indication from the panel feature detector corresponding to predetermined pixels associated with the hole site for determining faults on the circuit board.
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Cited Art Landscape
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