System method and apparatus using multiple resolution machine readable symbols
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United States of America Patent
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Jun 29, 1993
Issued Date -
N/A
app pub date -
Jan 31, 1992
filing date -
Oct 30, 1990
priority date (Note) -
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Abstract
A multiple resolution optically encoded label is readable at two or more optical resolutions, and is able to store two or more respective channels of optically encode information. Low resolution information is encoded in a plurality of large cells arranged in a predetermined geometric pattern. Each of the large cells includes a plurality of smaller cells for storing high resolution information. Method and apparatus are disclosed for encoding both high resolution data, and low resolution data, as well as for finding and reading both high resolution and low resolution data.
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