Methods and systems for encoding and decoding data in 2D symbology
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United States of America Patent
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Apr 18, 2006
Grant Date -
Feb 12, 2004
app pub date -
Aug 5, 2003
filing date -
Aug 7, 2002
priority date (Note) -
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Abstract
Methods and systems for encoding and decoding a 2D symbol is disclosed. According to one aspect of the 2D symbol, the following characteristics are realized: 1) variable symbol widths and height; 2) variable print resolution, 3) multiple damage protection levels; 4) large information storage; 5) high redundancy; 6) readable by line based scanning devices; 7) recognizable by either contact scanning or non-contact scanning devices. In addition, a set of positioning lines are attached 2D symbol for guiding scanning devices to decode the 2D symbol with proper resolution.
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