Apparatus and method for reading a coded pattern
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United States of America Patent
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Feb 10, 2004
Grant Date -
N/A
app pub date -
Sep 22, 1999
filing date -
Sep 22, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for reading a coded pattern, symbol or indict such as a barcode. The apparatus and method improves captured resolution with a marker or fiducial input closed loop system. In the present invention, a pre-scan of the pattern, such as a barcode, is performed and fiducials of the barcode are identified. Calculations from these fiducial locations are used to determine the minimum field of view that will substantially capture the fiducials. In an embodiment of the invention, a variable magnification system of the apparatus can be actuated to this minimum field of view and a full resolution final image of the pattern is then captured.
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