2-dimensional code formation method and formation device
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United States of America Patent
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Sep 29, 2009
Grant Date -
Feb 15, 2007
app pub date -
Aug 11, 2004
filing date -
Aug 11, 2003
priority date (Note) -
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Abstract
The 2-dimensional code formation method of this invention comprises: a process of specifying the code size for 2-dimensional code; a process of specifying storage information to be written in the 2-dimensional code; a process of setting the cell size for the unit cell of the 2-dimensional code; a process of specifying the dot step size or the number of dots n x m (where n and m are natural numbers) arranged vertically and horizontally inside the unit cell; a process of creating laser-marking information based on the code size, storage information, cell size and step size or number of dots; and a process of performing laser marking of the 2-dimensional code based on that laser-marking information.
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