Autotrip operation of a sorting machine using color sorting
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United States of America Patent
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-
Jan 11, 1994
Grant Date -
N/A
app pub date -
Jun 3, 1991
filing date -
Jun 3, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A dynamic trip level setting apparatus is described for changing the comparison ratio with which products are optically sorted using first and second reflectance color values. The reflectance ratio for each image sorted is supplied to a RAM to update the RAM's memory. The dynamic values in the RAM are periodically employed to update a color sensitivity factor supplied to a battery-backed RAM. The battery-backed RAM value is employed in a logic device employing an algorithm and produces a variable output against which the ratio of 'breaker' products (neither above a first color acceptance level nor below a second color reject level) is compared to produce a reject signal when the comparison results in an output indicating reject is appropriate.
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