Registers – Coded record sensors – Particular sensor structure
Patent
1994-01-25
1999-12-14
Pitts, Harold I.
Registers
Coded record sensors
Particular sensor structure
235494, G06F 710
Patent
active
060006137
ABSTRACT:
A self-clocking glyph code is provided for encoding n-bit long digital values (where n>1) in a logically ordered sequence of composite glyphs that are written, printed, or otherwise recorded on a hardcopy recording medium in accordance with a predetermined spatial formatting rule. As used herein, a "composite glyph" is a graphical symbol that has a plurality of predefined, substantially orthogonal, graphical characteristics; each of which is capable of assuming any one of a plurality of predefined graphical states. An n-bit long digital value is distributively encoded in a glyph of this type by decomposing its n-bits, prior to or during the encoding, into a plurality of shorter, ordered, non-overlapping bit strings. The digital values of these bit strings, in turn, are encoded in the states of respective graphical characteristics of the composite glyph in a predetermined logical order, thereby preserving the logical ordering of the bit strings.
REFERENCES:
patent: 4443694 (1984-04-01), Sanford
patent: 5091966 (1992-02-01), Bloomberg et al.
patent: 5168147 (1992-12-01), Bloomberg
Mansour, "Multi-Tiered Condensed Bar Code," IBM Technical Disclosure Bulletin, vol. 26, No. 2, Jul., 1983, pp. 766-767.
Flores L. Noah
Hecht David L.
Stearns Richard G.
Pitts Harold I.
Xerox Corporation
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