Bar code reader for reading two-dimensional bar codes by using length information derived from a sensed signal
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United States of America Patent
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Aug 15, 1995
Grant Date -
N/A
app pub date -
Aug 31, 1993
filing date -
Sep 2, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
The image of a bar code on a bar code label is picked up by a linear sensor while scanning in the X and Y directions is performed by a stage. An analog video signal from this linear sensor is converted into digital data by an analog processor. The resulting digital video data is supplied to a counter unit, and the counter unit counts the lengths of bars and spaces constituting the bar code. These counted lengths of the bars and the spaces are stored in a memory. The content of the memory is decoded by a data processor constituted by a CPU or the like. The decoded result is supplied to, e.g., a host computer, thereby presenting the content of the information written on the bar code to an operator.
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