Global addressability for self-clocking glyph codes
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United States of America Patent
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Sep 26, 1995
Grant Date -
N/A
app pub date -
Dec 22, 1993
filing date -
Dec 22, 1993
priority date (Note) -
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status (Latency Note)
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Abstract
An optically readable record for storing encoded information comprises (1) a recording medium, (2) a self-clocking data code for encoding the information, with this data code being composed of glyphs that are written in a bounded two dimensional code field on the recording medium on centers that are spatially distributed in nominal accordance with a predetermined spatial formatting rule, and the glyphs being defined by respective symbols that are selected from a finite set of optically discriminable symbols to encode the information, and (3) a self-clocking address pattern written on the recording medium to extend across the code field along at least one axis, with this address pattern being composed of a unique glyph pattern that disambiguates spatial position within the address pattern to a subpattern precision.
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