Optical code reader and methods and articles therefor
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United States of America Patent
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Sep 5, 2000
Grant Date -
N/A
app pub date -
Jun 17, 1998
filing date -
Jun 17, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for providing an optical code reading mode and a data communication mode comprises an optical detector, a variable-gain amplifier having an input and an output, an optical code reader circuit and a data communication circuit. The input of the variable-gain amplifier is responsive to the optical detector. The optical code reader circuit and the data communication circuit are responsive to the output of the amplifier. The variable-gain amplifier provides a first gain during the optical code reading mode, and a second gain during at least a portion of the data communication mode, wherein the second gain is less than the first gain.
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