US 12,307,321 B2
Reading device
Takumaru Ishiyama, Mishima Shizuoka (JP)
Assigned to TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed by TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed on Nov. 2, 2023, as Appl. No. 18/500,303.
Claims priority of application No. 2023-006877 (JP), filed on Jan. 19, 2023.
Prior Publication US 2024/0249090 A1, Jul. 25, 2024
Int. Cl. G06K 7/10 (2006.01); H01Q 21/24 (2006.01)
CPC G06K 7/10366 (2013.01) [H01Q 21/24 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A reading device, comprising:
a first transmission and reception component configured to transmit a signal to and receive a signal from a wireless tag by radio waves radiated in a predetermined range including a horizontal direction;
a second transmission and reception component arranged side by side with the first transmission and reception component and configured to transmit a signal to and receive a signal from the wireless tag by radio waves radiated in a second range that is at least partially deviated from the predetermined range of the radio waves radiated by the first transmission and reception component;
a reading component configured to read signals received by the first transmission and reception component and the second transmission and reception component from the wireless tag; and
a determination component configured to, when the wireless tag detected by one of the first transmission and reception component and the second transmission and reception component is detected by other of the first transmission and reception component and the second transmission and reception component based on a reading result of the reading component, determine that a movement direction of the wireless tag is a direction from the one of the first transmission and reception component and the second transmission and reception component toward the other, wherein
the first transmission and reception component and the second transmission and reception component are planar antennas that radiate circularly polarized waves, and an angle formed by back surfaces of the first transmission and reception component and the second transmission and reception component on a side on which the circularly polarized waves are radiated is an obtuse angle.