公开(公告)号：US10942248B2

公开(公告)日：2021-03-09

申请号：US16385909

申请日：2019-04-16

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: G01S5/06 ,  H04L12/24 ,  H04B1/16 ,  H04W4/029 ,  G01S5/02 ,  H04W4/02

Abstract: An example method includes receiving environmental data from a plurality of receivers; calculating, using a processor, an environmental offset based on the environmental data, wherein the environmental offset is operable to adjust a reference phase offset; and dynamically adjusting the environmental offset in response to a detected change in the environmental data.

公开(公告)号：US20240178566A1

公开(公告)日：2024-05-30

申请号：US18072491

申请日：2022-11-30

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Nicolas F. Casazzone ,  Charles Burton Swope ,  Edward A. Richley

IPC: H01Q9/04 ,  H01Q5/378 ,  H01Q21/06

CPC classification number: H01Q9/0407 ,  H01Q5/378 ,  H01Q21/065

Abstract: The disclosure is an antenna device, comprising a substrate layer and a patch antenna assembly on the substrate layer, configured to contain at least one patch antenna element. Each patch antenna element has a feed insertion cutout and a base cutout, where a feed line extending from a feed point on the substrate layer couples to the antenna element in the feed insertion cutout. Each patch antenna element corresponds to a respective parasitic patch element, positioned above the patch antenna element, and a respective capacitive loading element, positioned on the feed line and proximate to the patch antenna element, to improve the performance of the antenna device. Each parasitic pat antenna is larger than its respective patch antenna element. The antenna device may also include a mounting structure to position each parasitic patch element over each patch antenna element.

公开(公告)号：US20210192154A1

公开(公告)日：2021-06-24

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

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.

公开(公告)号：US20190178981A1

公开(公告)日：2019-06-13

申请号：US16279410

申请日：2019-02-19

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: G01S5/06 ,  G01S5/02

CPC classification number: G01S5/06 ,  G01S5/02 ,  G01S5/0215 ,  G01S5/0221

Abstract: An disclosed method includes receiving, from receivers, TOA data associated with location tag transmissions; determining a first set of the receivers based on the received TOA data; calculating a first tag location estimate for the first set of the receivers by applying a minimizing function to a first set of the TOA data corresponding to the first set of the receivers; determining a first data quality indicator (DQI) for the first tag location estimate; and when the first DQI for the first tag location estimate does not meet a threshold: determining, for the first set of the TOA data, impacts of respective delays on the minimizing function; determining, based on the impacts of the respective delays on the minimizing function, a second set the receivers different from the first set of the receivers; and calculating a second tag location estimate for the second set of the receivers.

公开(公告)号：US10285157B2

公开(公告)日：2019-05-07

申请号：US15803713

申请日：2017-11-03

Applicant: Zebra Technologies Corporation

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang ,  Aitan Ameti

IPC: H04W64/00 ,  H04W4/02 ,  H04W24/10 ,  H04L7/033 ,  G01S5/02

Abstract: A disclosed example apparatus receives a tag transmission signal from a tag at a receiver, wherein the tag transmission signal comprises a series of pulses; determines a coarse estimate of a time-of-arrival (TOA) of the tag transmission signal based on a detection of a pulse of the series of pulses in an adjustable coarse timing window, wherein the coarse estimate is based on a plurality of coarse timing windows; determines a fine estimate of the TOA based on a detection of the pulse in at least one of a parallel set of fine timing windows; and determines a sub-window resolution of the TOA based on at least one detection transition between consecutive fine receiver windows of at least one of a plurality of pulses and a weighted average of the TOA for each pulse of the series of pulses.

公开(公告)号：USD931840S1

公开(公告)日：2021-09-28

申请号：US29698772

申请日：2019-07-19

Applicant: Zebra Technologies Corporation

Designer： Chad Chaumont ,  Robert P. Gotschewski ,  Alexander Mueggenborg ,  Edward A. Richley ,  Daniel P. Lanigan ,  Edward C. Thomas ,  John K. Hughes

公开(公告)号：US10310052B2

公开(公告)日：2019-06-04

申请号：US15492537

申请日：2017-04-20

Applicant: Zebra Technologies Corporation

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: H04W4/02 ,  G01S5/06 ,  H04L12/24 ,  H04B1/16 ,  G01S5/02

Abstract: Systems, methods, apparatuses, and computer readable media are disclosed for improving, in some examples, reference in a location system. In one embodiment, a method is provided comprising: receiving reference tag blink data from a plurality of receivers; calculating, using a processor, a reference phase offset between the plurality of receivers; and generating a suspended reference phase offset table, wherein a suspended reference phase offset table is generated by causing the reference phase offset to be stored in a memory for later tag location calculations.

公开(公告)号：US10261169B2

公开(公告)日：2019-04-16

申请号：US14729761

申请日：2015-06-03

Applicant: Zebra Technologies Corporation

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: H04W24/00 ,  G01S5/06 ,  G01S5/02

Abstract: The present invention provides methods for an active RFID tag target location system that provides for an iterative recalculating of a target location estimate by successively testing receiver TOA and DTOA error measurements and discarding outlier receivers. The present invention works to reduce the erratic effects that multipath channel interference and random noise play in target location systems due to incorrect identification of the main pulse of the transmit signal. In addition to providing for a greater accuracy and consistency in a TOA-based target location system, the method also provides for an opportunity to reduce a transmission bandwidth associate with the TOA transmission by the multiple receivers. The method may be considered a post-processing element, as the determination of TOA and DTOA may require a real-time calculation, where the timing constraints for the ensuing target location estimate may be less severe.

公开(公告)号：USD1063658S1

公开(公告)日：2025-02-25

申请号：US29882136

申请日：2023-01-11

Applicant: ZEBRA TECHNOLOGIES CORPORATION

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

公开(公告)号：US10520582B2

公开(公告)日：2019-12-31

申请号：US16279410

申请日：2019-02-19

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: H04W64/00 ,  G01S5/06 ,  G01S5/02

Abstract: An disclosed method includes receiving, from receivers, TOA data associated with location tag transmissions; determining a first set of the receivers based on the received TOA data; calculating a first tag location estimate for the first set of the receivers by applying a minimizing function to a first set of the TOA data corresponding to the first set of the receivers; determining a first data quality indicator (DQI) for the first tag location estimate; and when the first DQI for the first tag location estimate does not meet a threshold: determining, for the first set of the TOA data, impacts of respective delays on the minimizing function; determining, based on the impacts of the respective delays on the minimizing function, a second set the receivers different from the first set of the receivers; and calculating a second tag location estimate for the second set of the receivers.