Two dimensional dot code, and decoding apparatus and method...

Details Two dimensional dot code, and decoding apparatus and method... Two dimensional dot code, and decoding apparatus and method...

2011-05-17

2011-05-17

Labaze, Edwyn (Department: 2887)

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C235S454000

Reexamination Certificate

active

07942341

ABSTRACT:
A two dimensional dot code includes boundary dots, a direction dot and a code dot to regenerate an information therefrom. To decode the two dimensional dot code, the boundary dots and the direction dot are used to define coordinates of virtual code dots first and then, the code dot is compared with the coordinates of the virtual code dots. Thus, in order to retrieve the information represented by the two dimensional dot code, the position of the code dot can be rapidly determined without rotational correction of the image taken from the two dimensional dot code.

REFERENCES:
patent: 2007/0199990 (2007-08-01), Sonoda
patent: 2008/0048044 (2008-02-01), Zhao et al.
patent: 2009/0066977 (2009-03-01), Yoshida
patent: 2009/0224054 (2009-09-01), Wei et al.

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