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    Methods and apparatus for reference regeneration in real time location systems
    11.
    发明授权
    Methods and apparatus for reference regeneration in real time location systems 有权

    公开(公告)号：US10419884B2

    公开(公告)日：2019-09-17

    申请号：US15266137

    申请日：2016-09-15

    Applicant: Zebra Technologies Corporation

    Inventor： Alexander Mueggenborg ,  Edward A. Richley ,  Aitan Ameti

    IPC: H04W24/00 ,  H04W4/02 ,  H04W56/00 ,  H04W4/80

    Abstract: Methods and apparatus for reference regeneration in real time location systems are disclosed. An example disclosed method includes obtaining reference phase offsets from a plurality of radio frequency identification (RFID) receivers; transmitting a first synchronization signal via a wireline link to obtain differential wireline coarse sync measurements; determining a residual offset table based at least in part on the differential wireline coarse sync measurements and the reference phase offsets; transmitting a second synchronization signal via the wireline link to obtain revised differential wireline coarse sync measurements; generating revised reference phase offsets by combining the revised differential wireline coarse sync offsets with the residual offset table; and determining a physical location of a RFID tag based at least in part on i) the revised reference phase offsets and ii) RFID receiver clock measurements corresponding to a time-of-arrival of over-the-air data transmitted from the RFID tag.

    Methods and Apparatus for Multi-Stage Activation of Communication Devices
    13.
    发明公开
    Methods and Apparatus for Multi-Stage Activation of Communication Devices 审中-公开

    公开(公告)号：US20240037351A1

    公开(公告)日：2024-02-01

    申请号：US18379747

    申请日：2023-10-13

    Applicant: ZEBRA TECHNOLOGIES CORPORATION

    Inventor： Alexander Mueggenborg ,  Edward A. Richley

    IPC: G06K7/10 ,  G06K19/07

    CPC classification number: G06K7/10158 ,  G06K19/0709

    Abstract: An example communication device is disclosed herein. The communication device includes a magnetic-field interface; a near-field radio frequency (RF) interface; a far-field RF interface; and a controller. The controller is configured to place the communication device in a deep sleep mode, and in response to receiving a wake-up signal at the near-field RF interface, transition the communication device from the deep sleep mode to an awake mode for a period of time. If an activation signal is received during the period of time, the controller can transition the communication device from the awake mode to a fully functional mode, and if the activation signal is not received during the period of time, the controller can transition the communication device from the awake mode to the deep sleep mode.

    Methods and apparatus for multi-stage activation of communication devices
    14.
    发明授权
    Methods and apparatus for multi-stage activation of communication devices 有权

    公开(公告)号：US11822997B2

    公开(公告)日：2023-11-21

    申请号：US16718999

    申请日：2019-12-18

    Applicant: ZEBRA TECHNOLOGIES CORPORATION

    Inventor： Alexander Mueggenborg ,  Edward A. Richley

    IPC: G06K7/10 ,  G06K19/07

    CPC classification number: G06K7/10158 ,  G06K19/0709

    Abstract: An example disclosed method includes, in response to receiving a first signal at a communication device when the communication device is in a deep sleep mode, changing the tag from the deep sleep mode to an awake mode for a period of time, wherein the communication device consumes a first amount of power in the deep sleep mode, and the communication device consumes a second amount of power in the awake mode, and the second amount of power is greater than the first amount of power; in response to receiving a second signal during the period of time when in the awake mode, changing the communication device from the awake mode to a fully functional mode, wherein the communication device consumes a third amount of power in the fully functional mode, and the third amount of power is greater than the second amount of power; and, in response to not receiving the second signal during the period of time, changing the communication device from the awake mode to the deep sleep mode.

    Tilt sensor for an antenna
    15.
    发明授权
    Tilt sensor for an antenna 有权

    公开(公告)号：US11585827B2

    公开(公告)日：2023-02-21

    申请号：US16874880

    申请日：2020-05-15

    Applicant: ZEBRA TECHNOLOGIES CORPORATION

    Inventor： Alexander Mueggenborg ,  Daniella Strat ,  Chad Chaumont ,  Edward A. Richley

    IPC: G08B21/18 ,  G01P13/00 ,  G06K7/10 ,  G01P15/18

    Abstract: Methods and devices for determining movement associated with an antenna of a receiver are disclosed herein. An example method includes generating a first acceleration signal associated with the antenna, wherein the first acceleration signal includes one or more substantially non-zero axial components. The method may further include establishing an acceleration signature corresponding to the antenna based on the first acceleration signal, and generating a second acceleration signal associated with the antenna, wherein the second acceleration signal includes one or more substantially non-zero axial components. The method may further include determining a signal difference between the acceleration signature and the second acceleration signal, wherein the signal difference is attributable to a movement of the antenna. The method may further include generating an alert signal indicating the movement.

    Tilt Sensor
    16.
    发明申请
    Tilt Sensor 有权

    公开(公告)号：US20210356493A1

    公开(公告)日：2021-11-18

    申请号：US16874880

    申请日：2020-05-15

    Applicant: ZEBRA TECHNOLOGIES CORPORATION

    Inventor： Alexander Mueggenborg ,  Daniella Strat ,  Chad Chaumont ,  Edward A. Richley

    IPC: G01P13/00 ,  G01P15/18 ,  G08B21/18 ,  G06K7/10

    Abstract: Methods and devices for determining movement associated with an antenna of a receiver are disclosed herein. An example method includes generating a first acceleration signal associated with the antenna, wherein the first acceleration signal includes one or more substantially non-zero axial components. The method may further include establishing an acceleration signature corresponding to the antenna based on the first acceleration signal, and generating a second acceleration signal associated with the antenna, wherein the second acceleration signal includes one or more substantially non-zero axial components. The method may further include determining a signal difference between the acceleration signature and the second acceleration signal, wherein the signal difference is attributable to a movement of the antenna. The method may further include generating an alert signal indicating the movement.

    Methods and apparatus to mitigate interference and to extend field of view in ultra-wideband systems
    17.
    发明授权
    Methods and apparatus to mitigate interference and to extend field of view in ultra-wideband systems 审中-公开

    公开(公告)号：US10673746B2

    公开(公告)日：2020-06-02

    申请号：US16131616

    申请日：2018-09-14

    Applicant: Zebra Technologies Corporation

    Inventor： Edward A. Richley ,  Aitan Ameti

    IPC: H04L12/725 ,  H04B1/06 ,  H04L12/26 ,  H04W72/08

    Abstract: An example apparatus includes a first detector configured to generate a first digitized stream of pulses and a second detector configured to generate a second digitized stream of pulses; a first packet decoder configured to decode a first valid over-the-air packet from the first digitized stream of pulses and generate a first time-stamped tag data packet; a second packet decoder configured to decode a second valid over-the-air packet from the second digitized stream of pulses; an arbiter configured to receive at least one of first and second time-stamped tag data packets and to select a time-stamped tag data packet from the at least one of the first and second time-stamped tag data packets; and a packet formatter to formulate a network data packet based on the selected time-stamped tag data packet.

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