Symbol information reading apparatus
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United States of America Patent
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-
Jun 6, 1995
Grant Date -
N/A
app pub date -
Aug 25, 1993
filing date -
Aug 31, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
A bar code symbol imaged by a two-dimensional imaging apparatus is stored in a frame memory. A data processing apparatus estimates the position of each code in the bar code symbol projected onto the photoelectric conversion plane of the two-dimensional imaging apparatus and checks to see if the position of each code word is within the screen. Whether or not decoding is possible is determined by judging whether or not the number of code words estimated to be outside the screen has exceeded the number of codes restorable. Only when it is judged that decoding is possible, pieces of information on the bar code symbol are read in sequence from the frame memory to restore the original information.
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