Coding and decoding methods and apparatuses
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United States of America Patent
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Dec 13, 2011
Grant Date -
Mar 26, 2009
app pub date -
Jun 16, 2006
filing date -
Jun 17, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A combined position and information code, which could be applied on a base, comprises a position code, which comprises a plurality of coding marks and which codes a plurality of positions. Each position in the position code is coded by a predetermined number of coding marks. Groups of coding marks are defined in the position code. The number of coding marks in each group is larger than the predetermined number of coding marks. At least some of the coding marks in each group are used for coding an information item. When decoding the combined code, part areas of the combined code are imaged. A position is decoded from each imaged part area, whereas the information item has to be decoded from at least two part areas.
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