Systems and methods for reading RFID tags

    公开(公告)号:US12086674B2

    公开(公告)日:2024-09-10

    申请号:US17527139

    申请日:2021-11-15

    申请人: PervasID Limited

    IPC分类号: G06K7/10

    摘要: An RFID system comprises an array of antennas each configured to emit a plurality of beams in different directions. The beams of each pair of adjacent antennas are directed towards one another and overlap. A pair of adjacent antennas transmits simultaneously and the overlapping beams interfere to create an interference pattern. An RFID reader controls the relative phase and/or frequency of the beams to move the interference pattern to read an RFID tag within the moving pattern. As the chance of a RFID tag responding to an emitted beam generally increases with signal strength of the reader beam an area of constructive interference means that RFID tags in that region are more likely to respond to the signal. The system can cover a large proportion of the area below ceiling-mounted antennas, where cover generally means that RFID tags in that area will be successfully read.

    Dynamic communication methods for smart tag systems

    公开(公告)号:US11960954B1

    公开(公告)日:2024-04-16

    申请号:US18373506

    申请日:2023-09-27

    摘要: The disclosed methods include: detecting smart data associated with a first tag comprised in the tag network; resolving the smart data to generate resolved data associated with a plurality of tags in the tag network including the first tag and a second tag; determining the second tag based on the resolved data; and extracting or determining, using the resolved data: first telemetric data associated with the first tag, first location data associated with the first tag, second telemetric data associated with the second tag, and second location data associated with the second tag. The methods also include formatting the first telemetric data, the first location data, the second telemetric data, and the second location data to generate an inventory map associated with the first mobile or stationary cargo and the second mobile or stationary cargo; and transmitting the inventory map to a display device configured to visualize the inventory map.

    READING DEVICE AND CONTROL PROGRAM FOR READING DEVICE

    公开(公告)号:US20180239935A1

    公开(公告)日:2018-08-23

    申请号:US15958910

    申请日:2018-04-20

    发明人: Nobuo MUROFUSHI

    IPC分类号: G06K7/10

    摘要: A reading device includes an antenna having a signal radiating surface and configured to output a linearly polarized wave from the radiating surface, a movable and rotatable stage supporting the antenna and configured to move the antenna along a first direction parallel to the radiating surface of the antenna and rotate the antenna on an axis that is normal to the radiating surface of the antenna, and a tag reader connected to the antenna and configured to supply signals to the antenna for reading information from a wireless tag and to receive signals from the antenna including information read from the wireless tag.

    READING DEVICE AND CONTROL PROGRAM FOR READING DEVICE

    公开(公告)号:US20180053171A1

    公开(公告)日:2018-02-22

    申请号:US15642000

    申请日:2017-07-05

    发明人: Shigeaki SUZUKI

    IPC分类号: G06Q20/20 G06K7/10

    摘要: A wireless tag reading device comprises an antenna for transmitting wireless signals to a wireless tag for reading of information from the wireless tag and a moveable stage for moving the antenna from a first location to a second location during a reading process for reading the information from the wireless tag. A controller determines whether information has been received from the wireless tag with the moveable stage at a first location, and then moves the stage to the second location if the information has not been received from the wireless tag during the reading process with the stage at the first location.

    APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING RF SIGNAL USING BEAMFORMING
    7.
    发明申请
    APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING RF SIGNAL USING BEAMFORMING 审中-公开
    使用波束发射和接收RF信号的装置和方法

    公开(公告)号:US20160371515A1

    公开(公告)日:2016-12-22

    申请号:US14966528

    申请日:2015-12-11

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10089

    摘要: Disclosed herein are an apparatus and method for transmitting and receiving an RFID signal using beamforming. The apparatus for transmitting and receiving a Radio Frequency Identification (RFID) signal using beamforming according to an embodiment includes a reception unit for receiving power and RFID data signals from an RFID reader, a control unit for adjusting opening/closing periods of switches corresponding to respective paths through which the RF data signals pass, thus controlling the paths, and a transmission unit for converting phases of RF data signals, which are distributed and transmitted to the paths, in response to the opening/closing periods of the switches, and then transmitting beams corresponding to the RF data signals while converting a pattern of the beams.

    摘要翻译: 本文公开了一种使用波束形成来发送和接收RFID信号的装置和方法。 根据实施例的使用波束形成发送和接收射频识别(RFID)信号的装置包括:用于从RFID读取器接收功率和RFID数据信号的接收单元,用于调节对应于各自的开关的开关周期的控制单元 RF数据信号通过的路径,从而控制路径;以及发送单元,用于转换分配并发送到路径的RF数据信号的相位,响应于开关的打开/关闭周期,然后发送 对应于RF数据信号的光束,同时转换光束的图案。

    Wireless tag communication device and wireless tag communication program
    8.
    发明授权
    Wireless tag communication device and wireless tag communication program 有权
    无线标签通信设备和无线标签通信程序

    公开(公告)号:US09268980B2

    公开(公告)日:2016-02-23

    申请号:US14449331

    申请日:2014-08-01

    IPC分类号: H04Q5/22 G06K7/10

    CPC分类号: G06K7/10217 G06K7/10089

    摘要: According to one embodiment, a wireless tag communication device which communicates with a wireless tag includes a communication unit that designates a target wireless tag to read tag information stored in the wireless tag; a read-state determination unit that determines a read state of the tag information read by the communication unit; an output adjustment unit that varies a radio wave output to be transmitted to the wireless tag in response to the result of the determination by the read-state determination unit; a signal strength detection unit that detects the signal strength of a reply signal received from the wireless tag via the communication unit; and a control unit that switches the operation mode of the communication unit between a long-distance mode to communicate with the wireless tag while the output adjustment unit varies the radio wave output and a near-field mode to communicate with the wireless tag while the signal strength detection unit detects the signal strength.

    摘要翻译: 根据一个实施例,与无线标签通信的无线标签通信设备包括指定目标无线标签以读取存储在无线标签中的标签信息的通信单元; 读取状态确定单元,确定由通信单元读取的标签信息的读取状态; 输出调整单元,其响应于所述读取状态确定单元的确定结果,改变要发送到所述无线标签的无线电波输出; 信号强度检测单元,其经由所述通信单元检测从所述无线标签接收到的应答信号的信号强度; 以及控制单元,其在所述输出调整单元改变所述无线电波输出的远距离模式和与所述无线标签通信的远距离模式之间切换所述通信单元的操作模式,并且在所述信号 强度检测单元检测信号强度。

    Apparatus and method for serialized continuous encoding of RFID tags
    9.
    发明授权
    Apparatus and method for serialized continuous encoding of RFID tags 有权
    用于RFID标签的串行连续编码的装置和方法

    公开(公告)号:US08896425B1

    公开(公告)日:2014-11-25

    申请号:US13573045

    申请日:2012-08-16

    申请人: Lawrence J Martin

    发明人: Lawrence J Martin

    IPC分类号: H04Q5/22 G06K7/10

    摘要: A Method for rapidly encoding RFID Tags on a moving web, using well established encoding techniques supplemented by an elegant but unobvious mechanism for enforcing the order of data encoded to said RFID Tags.

    摘要翻译: 一种在移动网络上快速编码RFID标签的方法,使用完善的编码技术,补充了优雅但不显着的机制,用于强制编码到所述RFID标签的数据的顺序。

    Portable encoded information reading terminal configured to acquire images
    10.
    发明授权
    Portable encoded information reading terminal configured to acquire images 有权
    被配置为获取图像的便携式编码信息读取终端

    公开(公告)号:US08881982B2

    公开(公告)日:2014-11-11

    申请号:US13451744

    申请日:2012-04-20

    IPC分类号: G06K7/00 G06K7/10 G06K7/06

    摘要: An encoded information reading (EIR) terminal can comprise a microprocessor, a memory, an EIR device including a two-dimensional imaging device, a motion sensing device, and a communication interface. The EIR terminal can be configured, responsive to detecting a pre-defined pattern in a first plurality of values received from the motion sensing device, to store in the memory a point of origin equal to a first spatial position of the EIR terminal. The EIR terminal can be further configured, responsive to detecting a user interface command, to determine, based on a second plurality of values received from the motion sensing device, a second spatial position of the EIR terminal relative to the point of origin, and to acquire an image of the object. The EIR terminal can be further configured to determine the image scale factor based on at least the second spatial position.

    摘要翻译: 编码信息读取(EIR)终端可以包括微处理器,存储器,包括二维成像设备的EIR设备,运动感测设备和通信接口。 EIR终端可以被配置为响应于以从运动感测装置接收的第一多个值中检测到预定义的模式,在存储器中存储等于EIR终端的第一空间位置的原点。 响应于检测到用户界面命令,EIR终端可以被进一步配置,以基于从运动感测装置接收的第二多个值来确定EIR终端相对于原点的第二空间位置,并且 获取对象的图像。 EIR终端还可以被配置为至少基于第二空间位置确定图像比例因子。