Reduced power scanner for reading indicia
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United States of America Patent
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May 3, 1994
Issued Date -
N/A
app pub date -
Jul 28, 1993
filing date -
Nov 1, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A scanner is provided for reading a target containing indicia, such as bar codes, which includes a means for directing the a light source so that it illuminates a target, a photodetector that generates an electrical signal indicative of the intensity of the detected light, a means for decoding the electrical signal to identify the presence of a target containing a region of relatively high reflectivity, and a means for modifying the level of illumination of the light source either from low to high upon recognition of said region of relatively high reflectivity or from high to low when some predetermined condition, such as the end of the indicia scan, or the passage of a time period without reading indicia, is met.
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