US 12,423,538 B2
Detection system
Hirofumi Kato, Tokyo (JP)
Assigned to Magnolia White Corporation, Tokyo (JP)
Filed by Magnolia White Corporation, Tokyo (JP)
Filed on Jan. 22, 2024, as Appl. No. 18/418,648.
Application 18/418,648 is a continuation of application No. 17/885,716, filed on Aug. 11, 2022, granted, now 11,915,096.
Claims priority of application No. 2021-133512 (JP), filed on Aug. 18, 2021.
Prior Publication US 2024/0160872 A1, May 16, 2024
Int. Cl. G06K 7/14 (2006.01); G06V 40/13 (2022.01)
CPC G06K 7/1417 (2013.01) [G06V 40/1318 (2022.01)] 13 Claims
OG exemplary drawing
 
1. A detection device comprising:
a sensor provided with a plurality of first photosensors in a detection area;
a controller coupled to the first photosensors;
a plurality of second photosensors provided in a code detection area in such a manner that at least one of the second photosensors is covered with a light shielding layer in plan view; and
an individual identification circuit coupled to the second photosensors,
wherein the individual identification circuit is configured to define an identification code of the sensor, and the light shielding layer is configured to block light from reaching the at least one of the second photosensors corresponding to the identification code.