Character recognition apparatus
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United States of America Patent
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Oct 26, 1993
Grant Date -
N/A
app pub date -
Jun 14, 1991
filing date -
Oct 24, 1989
priority date (Note) -
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Abstract
A character recognition apparatus uses a magnetic head to read magnetic printed coded characters from a passing cheque 10. A head 24 using a circuit including a delay line 58 drives a controller 76 which, should a character not instantly be recognized by matching against templates, first varies the presumed speed by plus or minus 10% to see if a match can be found, then suppresses each detected edge in the character, in turn, to determine whether or not a match can be found. Each edge is used to create subsequent timing windows wherein a subsequent edge may be detected. The use of timing windows suppresses erroneous edge detection.
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