Global addressability for self-clocking glyph codes

Details Global addressability for self-clocking glyph codes Global addressability for self-clocking glyph codes

1993-12-22

1995-09-26

Hajec, Donald

Registers

Records

Particular code pattern

235456, G06K 1710, G06K 1906

Patent

active

054536057

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.

REFERENCES:
patent: 5091966 (1992-02-01), Bloomberg et al.
patent: 5128525 (1992-07-01), Stearns et al.
patent: 5221833 (1993-06-01), Hecht
patent: 5245165 (1993-09-01), Zhang

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