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US 5,862,255 AGranted
Broad bandwidth image domain communication channel with symbol interference suppression
AssigneeXerox Corporation
InventorsDaniel Davies, Dan S. Bloomberg, Robert E. Weltman
Life of this patent
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Abstract
The glyphs of self-clocking glyph codes are written on regular hexagonal or pseudo-hexagonal lattice-like patterns of centers to reduce the risk of interglyph interference during the read process while also enabling the glyphs to be packed more densely while maintaining a given center-to-center spacing between them.
Claims4
An image domain digital communication channel for machine readable digital information, said communication channel comprising
- a recording medium, and
- machine readable glyphs written on said recording medium on a pseudo hexagonal lattice-like pattern of centers, in which ones of the centers of said lattice-like pattern form a row of centers that are horizontally offset from each other within the row by a nominal horizontal spacing and from other centers in adjacent rows by approximately one-half of the nominal horizontal spacing, said glyphs being configured in accordance with said digital information, thereby providing a machine readable representation of said digital information.
Dependencies are inferred from the claim text.