Two-dimensional code
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United States of America Patent
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Jun 22, 2004
Grant Date -
Feb 13, 2003
app pub date -
Aug 6, 2002
filing date -
Aug 9, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A two-dimensional code for recognizing data in high speed and recording large amount of data in a limited space. The two-dimensional code was designed by locating one solid line that covers four corners of the area for matrix data element in order to obtain information of physical size of the two-dimensional code easily, and by arranging capture lines on the solid line to make a structure to obtain data density for capturing the two-dimensional code by high resolution CCD(Charged Coupled Devices) image scanner, and it can be presented that can store large amount of data in a limited size and generation of code with high density becomes possible.
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