US 12,437,176 B2
Display medium, code generation method, and code reading method
Shinichi Kikuchi, Kariya (JP); Mitsuo Okumura, Kariya (JP); and Tatsuya Okabe, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Nov. 20, 2024, as Appl. No. 18/953,930.
Application 18/953,930 is a continuation of application No. PCT/JP2023/015950, filed on Apr. 21, 2023.
Claims priority of application No. 2022-083973 (JP), filed on May 23, 2022.
Prior Publication US 2025/0077825 A1, Mar. 6, 2025
Int. Cl. G06K 19/06 (2006.01)
CPC G06K 19/06037 (2013.01) 6 Claims
OG exemplary drawing
 
1. A display medium comprising an information code, wherein
the information code is displayed on the display medium,
the information code is generated by combining a first code and a second code,
in each of the first code and the second code, information is recorded by multiple cells arranged in a two-dimensional array, and
the information code includes:
a light color cell;
a dark color cell;
a central light color cell which includes a central light color region and an outer dark color region, the central light color region being surrounded by the outer dark color region within the central light color cell; and
a central dark color cell which includes a central dark color region and an outer light color region, the central dark color region being surrounded by the outer light color region within the central dark color cell.