Interface surface having coded data with predetermined pattern

Details Interface surface having coded data with predetermined pattern Interface surface having coded data with predetermined pattern

2005-09-06

2005-09-06

Lee, Diane I. (Department: 2876)

Registers

Records

Particular code pattern

C235S462030, C235S375000

Reexamination Certificate

active

06938826

ABSTRACT:
An interface surface for enabling interaction between a user and a computer system via a sensing device, the interface including visible graphical information and substantially invisible coded data readable by the sensing device, the coded data comprising a plurality of substantially undifferentiated marks positioned relative to a predetermined pattern, wherein each mark has a minimum radius and a maximum radius and wherein the length of a mark's minimum radius is greater than 40% of the length of that mark's maximum radius.

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Dymetman, 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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