Two-dimensional code and information processing method

Details Two-dimensional code and information processing method Two-dimensional code and information processing method

2005-10-25

2008-10-21

Kim, Ahshik (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S462010, C235S462160, C235S494000

Reexamination Certificate

active

07438232

ABSTRACT:
A two-dimensional code has an external shape which can be distinguished from the background by brightness or color, with an interior region, positioned a predetermined spacing away from the perimeter thereof, being divided into a plurality of smaller areas of a predetermined size, and information being represented by the brightness or color of each of the divided regions, wherein the size of each of the areas is greater than approximately twice the size of the spacing. This solves the problem that the outer square shape of two-dimensional code can be recognized but the inner bits cannot be read out with certainty.

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Zhang, et al., “Visual Marker Detection and Decoding in AR Systems: A Comparative Study,” Proc. of International Symposium on Mixed and Augmented Reality (ISMAR' 02) 2002.

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