Tag writing device, label printer, and information processing program

    公开(公告)号:US11827042B2

    公开(公告)日:2023-11-28

    申请号:US17315394

    申请日:2021-05-10

    发明人: Yuki Kawasaki

    摘要: A tag writing device includes a conveying unit, an antenna, an acquiring unit, a determining unit, a selecting unit, and a deciding unit. The acquiring unit acquires reception intensities about a plurality of wireless tags. The determining unit determines an intermediate position between a start position and an end position as a position where a sum of reception intensities acquired while a mount is conveyed from the start position to the intermediate position and a sum of reception intensities acquired while the mount is conveyed from the intermediate position to the end position are closest. The selecting unit selects, as a target tag, the wireless tag, the intermediate position of which is determined as a position within a prediction range. The deciding unit decides a relative positional relation between the wireless tag and the antenna at a time when writing is performed.

    Devices, systems, and methods for location tracking or proximity detection

    公开(公告)号:US12099134B2

    公开(公告)日:2024-09-24

    申请号:US17619465

    申请日:2019-06-18

    IPC分类号: G01S5/02 H04W4/02 H04W4/029

    摘要: This invention relates to devices, systems, and methods for location tracking and proximity detection. The invention uses transmitting devices with more than one transmission range. In various embodiments, the invention uses a primary device to transmit a near-range signal and a medium-range signal. In other embodiments, the invention uses a secondary device to receive these signals and, on the basis of the received signals, generate alerts, transmit signals, or do both. In further embodiments, the invention uses another device to provide the location of the secondary device, the primary device, or both devices. This invention may be used for contact tracing, hand hygiene compliance monitoring, and location tracking.

    POSITIONING SYSTEM, ACCESS CONTROL SYSTEM, AND POSITIONING METHOD

    公开(公告)号:US20240203185A1

    公开(公告)日:2024-06-20

    申请号:US18541408

    申请日:2023-12-15

    IPC分类号: G07C9/28 G01S5/02 G07C9/22

    摘要: A positioning system includes: a transmitting and receiving part having multiple antennas and positioned overhead in a positioning target area with a side entrance; a distance calculation part configured to calculate a distance between a communication device that can move in the positioning target area, and the transmitting and receiving part, based on results gained from signals of multiple frequencies transmitted bidirectionally between the communication device and the transmitting and receiving part; an angle calculation part configured to calculate an angle that indicates a position of the communication device with respect to the transmitting and receiving part, based on a phase difference between the signals received by the antennas of the transmitting and receiving part; and a determining part configured to determine whether or not the communication device is approaching the side entrance based on the distance and angle calculated by the distance calculation part and the angle calculation part.

    POSITION DETERMINATION SYSTEM AND POSITION DETERMINATION METHOD

    公开(公告)号:US20240255605A1

    公开(公告)日:2024-08-01

    申请号:US18631520

    申请日:2024-04-10

    申请人: DENSO CORPORATION

    IPC分类号: G01S5/02 G01S5/00

    摘要: A position determination system includes a microcomputer configured to: control operations of multiple outdoor units and an indoor unit; determine whether a portable device is present inside a vehicle interior or in an outdoor operation area; acquire a reception strength of a signal from the portable device in each indoor and outdoor units, acquire a time of flight (ToF) correlation value as a parameter different from the reception strength, change a type of the parameter used for position determination corresponding to an area for which the position determination is to be performed; determine whether the portable device is present inside the vehicle interior based on the reception strength observed in each outdoor unit and indoor unit, determine whether the portable device is present in the outdoor operation area based on the ToF correlation value.