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公开(公告)号：US20240289568A1
公开(公告)日：2024-08-29
申请号：US18115577
申请日：2023-02-28
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Michael J. Koch , Sajan Wilfred
CPC classification number: G06K7/10475 , G06Q10/08
Abstract: The disclosure is a system comprising a transceiver array, containing at least a first pair of transceivers and a second pair of transceivers, the first pair of transceivers containing a transceiver that is included in the second pair of transceivers. Each transceiver in a pair is configured to monitor a plurality of zones for RFID tags, transmit information related to the monitoring of a portion the plurality of zones for RFID tags to the other transceiver in the pair, and determine a location of a monitored RFID tag based on the information acquired through the monitoring of the plurality of zones and the information received from the other transceiver in the first or second pair.
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Patent Agency Ranking
公开(公告)号：US20200210656A1
公开(公告)日：2020-07-02
申请号：US16235651
申请日：2018-12-28
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Benjamin J. Bekritsky , Michael J. Koch , Charles Burton Swope
IPC: G06K7/10
Abstract: At least some embodiments of the present invention are directed to RFID reader systems, readers, and/or arrangements configured to estimate a directional bearing of an RFID tag. In an embodiment, the present invention is an RFID arrangement configured communicate with an RFID tag via a primary transmit and receive signals and to contemporaneously determine a plurality of RSSI levels of the RFID tag over a 360-degree azimuth range via a plurality of secondary receive signals.
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公开(公告)号：US20200209348A1
公开(公告)日：2020-07-02
申请号：US16235835
申请日：2018-12-28
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Michael J. Koch , Benjamin J. Bekritsky , Charles Burton Swope
Abstract: At least some embodiments of the present invention are directed to RFID reader systems configured to estimate a directional bearing of an RFID tag. In an embodiment, the present invention is an RFID system configured in a way that upon a detection of a variance in the direction of a maximum RSSI value for a given RFID tag in response to a plurality of interrogation signals transmitted by an RFID reader over a respective plurality of different directions, the RFID reader retransmits the plurality of interrogation signals over the respective plurality of different directions with successively lower power levels until the only response(s) being received no longer exhibit the previously detected variance.
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公开(公告)号：US12095169B2
公开(公告)日：2024-09-17
申请号：US17218302
申请日：2021-03-31
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Benjamin J. Bekritsky , Michael J. Koch , Alexander M. Jacques
CPC classification number: H01Q3/267 , G06K7/10346 , G06K7/10475 , H04B7/0617 , H04B17/12 , H04B17/17
Abstract: Systems and methods for enhanced fault tolerance for a radio frequency identification (RFID) phased array antenna are provided. The systems include a RFID reader that includes (i) a phased array antenna having N antenna elements; and (ii) a controller operatively connected to the phased array antenna. The controller is configured to (1) monitor a characteristic for each antenna element of a set of the N antenna elements; (2) based on the characteristic, detect a fault of a faulty antenna element of the set of the N antenna elements; and (3) responsive to detecting the fault of the faulty antenna element of the set of the N antenna elements, adjust a parameter of at least one other antenna element of the N antenna elements, wherein the parameter is a weight applied to a signal that is transmitted to or received at an antenna element.
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公开(公告)号：US20210231770A1
公开(公告)日：2021-07-29
申请号：US17227916
申请日：2021-04-12
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Michael J. Koch , Benjamin J. Bekritsky , Charles Burton Swope
Abstract: At least some embodiments of the present invention are directed to RFID reader systems configured to estimate a directional bearing of an RFID tag. In an embodiment, the present invention is an RFID system configured in a way that upon a detection of a variance in the direction of a maximum RSSI value for a given RFID tag in response to a plurality of interrogation signals transmitted by an RFID reader over a respective plurality of different directions, the RFID reader retransmits the plurality of interrogation signals over the respective plurality of different directions with successively lower power levels until the only response(s) being received no longer exhibit the previously detected variance.
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公开(公告)号：US20210192156A1
公开(公告)日：2021-06-24
申请号：US16723972
申请日：2019-12-20
Applicant: ZEBRA TECHNOLOGIES CORPORATION
Inventor： Michael J. Koch , Alexander M. Jacques , Camilo A. Gaitan Parra
Abstract: Methods and devices for performing dynamic compensation of a phased array RFID reader are disclosed herein. An example method includes configuring an RFID reader having an antenna array to compensate for determined antenna element phase-shift errors. The method includes exciting a reference antenna element of the antenna array, emitting an emitted signal, receiving the emitted signal via a receiver antenna element of the antenna array, and generating a received signal. The method further includes determining, by a processor, a phase shift of the received signal relative to the emitted signal, and determining a phase-shift error. The method then includes configuring the RFID reader to compensate for the determined phase-shift error associated with the receiver antenna element in response to receiving an RFID tag signal.
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