US 12,254,379 B2
Information reader
Kentaro Sasaki, Chita-gun (JP); Koji Konosu, Chita-gun (JP); Yuichi Ito, Chita-gun (JP); Yosuke Kanbe, Chita-gun (JP); Takeshi Fujisumi, Chita-gun (JP); Yoshihiro Yamazaki, Chita-gun (JP); and Ryohei Kagami, Chita-gun (JP)
Assigned to DENSO WAVE INCORPORATED, Aichi-Pref. (JP)
Appl. No. 18/284,977
Filed by DENSO WAVE INCORPORATED, Chita-gun (JP)
PCT Filed Mar. 31, 2022, PCT No. PCT/JP2022/016728
§ 371(c)(1), (2) Date Sep. 29, 2023,
PCT Pub. No. WO2022/211064, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 2021-061763 (JP), filed on Mar. 31, 2021; and application No. 2022-010885 (JP), filed on Jan. 27, 2022.
Prior Publication US 2024/0176970 A1, May 30, 2024
Int. Cl. G06K 7/14 (2006.01); G06K 7/10 (2006.01)
CPC G06K 7/1465 (2013.01) [G06K 7/1417 (2013.01); G06K 2007/10524 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An information reader, comprising:
a camera imaging a two-dimensional information code;
a first code process execution unit configured to perform a first code process, the first code process includes
a detection process detecting a first relationship information defining a two-dimensional code area of the first information code from an image of a first information code which serves as the information code imaged by the camera;
a reading process reading information recorded in the first information code based on the first relationship information which has been detected;
an adjustment unit configured to adjust learning model parameters based on training data including, at least, a plurality of successful cases of the reading process read based on the first relationship information, the learning model parameters being for outputting second relationship information shown by estimated values of information defining a two-dimensional code area of the information code from the information code imaged by the camera; and
a second code process execution unit configured to execute a second code process, the second code process includes
an acquisition process acquiring inputting, into the learning model, an image of the second information code, which serves as the information code imaged by the camera, and acquire the second relationship information from the learning model;
a reading process reading information recorded in the second information code based on the second relationship information which has been acquired; and
an output process outputting a reading result of the reading process;
one or more code readers each having the camera, the first code process execution unit and the second code process execution unit; and
a learning device provided with the adjustment unit, the learning device being separate from the one or more code readers, wherein
the one or more code readers are configured to acquire the parameters from the learning device, and
the second code process execution unit is configured to execute the second code process based on the acquired and adjusted parameters.