Rotationally symmetric tags

Details Rotationally symmetric tags Rotationally symmetric tags

2006-09-19

2006-09-19

Lee, Michael G. (Department: 2876)

Registers

Records

Particular code pattern

C235S462010, C235S462030

Reexamination Certificate

active

07108192

ABSTRACT:
Machine-readable coded data disposed on or in a substrate in accordance with a layout, and method of generating such coded data The layout has at least order n rotational symmetry, where n is at least two, and includes n identical sub-layouts rotated 1
revolutions apart about a center of rotational symmetry of the layout. The coded data is disposed in accordance with each sub-layout including rotation-indicating data that distinguishes the rotation of that sub-layout from the rotation of at least one other sub-layout within the layout.

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Dymatman, M., and Copperman, M., Intelligent Paper; In Electronic Publishing. Artistic Imaging. and Digital Typography, Proceedings of EP '98, Mar./Apr. 1998, Springer Verlag LNCS 1375, pp. 392-406.

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