发明名称 |
System and method for optical scanner sensitivity adjustment |
摘要 |
An optical scanning system comprises an optical scanner, a first circuit for generating a reference pulse and a second circuit for comparing a benchmark pulse scanned by the scanner to the reference pulse. The comparing circuit provides an indicating signal of one of a less than, a greater than and an equal to signals as a result of the comparison. There is a third circuit for adjusting sensitivity of the scanner based on the indicating signal. In one embodiment a visual indication is provided to distinguish between the less than, greater than and equal to signals so that a manual adjustment can be made to the scanner sensitivity. In another embodiment, automatic adjustments are made if a predetermined number of less than or greater than signals are provided before an equal to signal is provided by the comparing circuit.
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申请公布号 |
US5345089(A) |
申请公布日期 |
1994.09.06 |
申请号 |
US19920996801 |
申请日期 |
1992.12.24 |
申请人 |
PITNEY BOWES INC. |
发明人 |
LORENZO, JOHN L.;MOL, HANS C. |
分类号 |
G06K7/10;(IPC1-7):G06K7/10 |
主分类号 |
G06K7/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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