Optical reader system comprising digital conversion circuit
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United States of America Patent
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app pub date -
Jan 9, 2003
filing date -
Sep 3, 1996
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to methods and systems for analyzing and decoding image data captured with a one dimensional image sensor using N-bit mathematical methods. The analysis comprises converting a sequence of analog pixel data values to a corresponding sequence of data in an N-bit digital format and processing the data. The data can be analyzed using any or all of filtering, adaptive threshold determination, edge position interpolation, searching for distinctive barcode patterns, and detailed barcode decoding and checking. In alternative embodiments, the data is manipulated using a pre-scan of stored sequences of values. In another embodiment, the data is directly scanned and processed for qualifications, searching for, and decoding barcode patterns.
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