US 12,175,320 B2
Foreign matter detection device, card reader, foreign matter detection method and recording medium preliminary
Hiroshige Takeda, Nagano (JP); Takeshi Segawa, Nagano (JP); Yasushi Kasahara, Nagano (JP); and Takahiro Matsuzawa, Nagano (JP)
Assigned to NIDEC INSTRUMENTS CORPORATION, Nagano (JP)
Filed by NIDEC INSTRUMENTS CORPORATION, Nagano (JP)
Filed on Aug. 4, 2023, as Appl. No. 18/365,223.
Claims priority of application No. 2022-128353 (JP), filed on Aug. 10, 2022.
Prior Publication US 2024/0054300 A1, Feb. 15, 2024
Int. Cl. G06K 7/00 (2006.01); G06K 13/08 (2006.01); G07F 19/00 (2006.01)
CPC G06K 7/0091 (2013.01) [G06K 13/0868 (2013.01); G07F 19/2055 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A foreign matter detection device which detects a foreign matter in an inside of a card reader, the foreign matter detection device comprising:
a control part which performs control for causing an imaging device provided in the inside of the card reader to image a space in the inside of the card reader; and
a detection part which detects the foreign matter in the space by image analysis based on a captured image obtained by the imaging device, wherein
the control part causes the imaging device to image the space at a first timing before a card taking-in operation of the card reader and at a second timing after a card eject operation of the card reader performed after the card taking-in operation, and
the detection part detects the foreign matter based on a comparison between a first captured image which is obtained by imaging of the imaging device at the first timing and a second captured image obtained by the imaging of the imaging device at the second timing, wherein the second captured image is obtained after the first captured image.