公开(公告)号：US20190331785A1

公开(公告)日：2019-10-31

申请号：US16508448

申请日：2019-07-11

Applicant: Automaton, Inc.

Inventor： Spencer Hewett

IPC: G01S13/74 ,  G01S5/02 ,  G01S11/02

Abstract: A system and method for locating radio-frequency identification tags within a predetermined area. The method can incorporate sub-threshold superposition response mapping techniques, alone, or in combination with other methods for locating radio-frequency identification tags such as but not limited to time differential on arrival (TDOA), frequency domain phase difference on arrival (FD-PDOA), and radio signal strength indication (RSSI). The system can include a plurality of antennas dispersed in a predefined area; one or more radio-frequency identification tags; a radio-frequency transceiver in communication with said antennas; a phase modulator coupled to the ra-dio-frequency transceiver; and a system controller in communication with said transceiver and said phase modulator. Calibration techniques can be employed to map con-structive interference zones for improved accuracy.

公开(公告)号：US10455534B2

公开(公告)日：2019-10-22

申请号：US15958319

申请日：2018-04-20

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Hongyuan Zhang ,  Mao Yu ,  Su Khiong Yong ,  Sudhir Srinivasa

IPC: H04J3/06 ,  H04W56/00 ,  H04W64/00 ,  G01S11/02 ,  G01S13/76 ,  G01S5/06

Abstract: Timestamps associated with when transmissions are sent and received between a pair of communication devices are used to determine a distance between the pair of communication devices. The communication devices operate according to a wireless communication protocol, which specifies that a requester of a ranging measurement session is to compensate for a clock frequency offset between the pair of communication device and that a responder is not to compensate for the clock frequency offset. As part of the ranging measurement session, the responder sends feedback to the requester, where the feedback includes timestamps recorded by the responder. The timestamps in the feedback are not compensated for the clock frequency offset by the responder. After receiving the feedback, the requester compensates the timestamps in the feedback for the clock frequency offset before using the timestamps to calculate the distance between the pair of communication devices.

公开(公告)号：US10422850B2

公开(公告)日：2019-09-24

申请号：US15995763

申请日：2018-06-01

Applicant: Bluedot Innovation Pty Ltd

Inventor： Filip Eldic

IPC: G01S5/02 ,  H04W64/00 ,  H04B17/27 ,  G01S19/34 ,  G01S19/51 ,  H04W52/02 ,  H04W4/02 ,  G01S19/39 ,  G01S19/48 ,  G01S11/02

Abstract: A method is described of using the mobile device so as to control the drain of power from the power source of the mobile device, the mobile device having at least two location determination techniques having respective power drain characteristics, the method includes selecting the location determination technique having a lower power drain characteristic the greater the determined distance of the mobile device from a predetermined location or area, and selecting the location determination technique having the greater power drain characteristic the smaller the determined distance of the mobile device from a predetermined location or area. The method thus uses the least accurate technique when furthest away and the most accurate technique when closer to a predetermined location or area.

公开(公告)号：US20190277956A1

公开(公告)日：2019-09-12

申请号：US16426047

申请日：2019-05-30

Applicant: CommScope Technologies LLC

Inventor： Martial Germain Gander

IPC: G01S11/02 ,  H04B17/10 ,  H04B17/27 ,  H04B1/10 ,  H04B17/00

Abstract: A method for determining the distance to source of a passive intermodulation (PIM) product for a distributed base station is provided. The method includes generating a test signal; transmitting the test signal on a front haul communication link between a baseband unit and a remote radio head of the distributed base station; receiving the PIM product as a reflected signal at the remote radio head; multiplying the reflected signal by a conjugate of the test signal to create a sinewave; determining a frequency of the sinewave; and determining the distance to the source of the PIM based on the determined frequency of the sinewave.

公开(公告)号：US10408915B2

公开(公告)日：2019-09-10

申请号：US14850051

申请日：2015-09-10

Applicant: CPG Technologies, LLC

Inventor： James F. Corum ,  Kenneth L. Corum ,  James D. Lilly ,  Michael J. D'Aurelio

IPC: G01S5/06 ,  G01S5/02 ,  H02J5/00 ,  G01S1/08 ,  G01S5/14 ,  G01S11/02 ,  H04B5/00

Abstract: Disclosed are various embodiments for fixing a navigational position using guided surface waves launched from guided surface wave waveguide probes at various ground stations. A guided surface wave is received using a guided surface wave receive structure. A reflection of the guided surface wave is received using the guided surface wave receive structure. An amount of time that has elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave is calculated. A location of the guided surface wave receive structure is determined based at least in part on the amount of time elapsed between receiving the guided surface wave and receiving the reflection of guided surface wave.

公开(公告)号：US20190227539A1

公开(公告)日：2019-07-25

申请号：US15880202

申请日：2018-01-25

Applicant: Ford Global Technologies, LLC

Inventor： Hamid M. Golgiri ,  Aaron Matthew DeLong ,  Vivekanandh Elangovan ,  Erick Michael Lavoie

IPC: G05D1/00 ,  B60W30/06 ,  G01C21/12 ,  G01S11/02

Abstract: Method and apparatus are disclosed for mobile device tethering for vehicle systems based on variable time-of-flight and dead reckoning. An example vehicle includes a communication module to communicate with a mobile device using multiple frequency bands and a body control module. The body control module, at an interval, estimates a location of the mobile device relative to the vehicle using time-of-flight measurements with a first or second frequency band when the location is in a first or second zone respectively. Additionally, between the intervals, the body control module tracks the location using dead reckoning. The body control modules then controls a vehicle subsystem using the location of the mobile device.

公开(公告)号：US10345438B2

公开(公告)日：2019-07-09

申请号：US15709264

申请日：2017-09-19

Applicant: CommScope Technologies LLC

Inventor： Martial Germain Gander

IPC: G01S11/02 ,  H04B1/10 ,  H04B17/00 ,  H04B17/10 ,  H04B17/27

Abstract: A method for determining the distance to source of a passive intermodulation (PIM) product for a distributed base station is provided. The method includes generating a test signal; transmitting the test signal on a front haul communication link between a baseband unit and a remote radio head of the distributed base station; receiving the PIM product as a reflected signal at the remote radio head; multiplying the reflected signal by a conjugate of the test signal to create a sinewave; determining a frequency of the sinewave; and determining the distance to the source of the PIM based on the determined frequency of the sinewave.

公开(公告)号：US10288724B2

公开(公告)日：2019-05-14

申请号：US14946856

申请日：2015-11-20

Applicant: MAGNA ELECTRONICS INC.

Inventor： Hasib Hassan ,  Dale R. Benton ,  John Lu ,  Brian A. Gorman

IPC: G01S11/02 ,  G01S11/06 ,  G01S11/08

Abstract: A method of estimating a distance between a mobile unit and a vehicle includes providing a time of flight subsystem including circuitry incorporated in the mobile unit and circuitry incorporated in the vehicle, and generating a time of flight distance signal by periodically transmitting a time of flight signal between the mobile unit and the vehicle and measuring the time taken for transmission of the time of flight signal therebetween. A travel sensor is disposed at the mobile unit and generates a travel sensor signal. A value of a distance estimate signal is initialized based on the time of flight distance signal. A movement of the mobile unit is determined based on variance in the travel sensor signal. The initialized value of the initialized distance estimate signal is changed or increased or decreased based upon determination of movement of the mobile unit.

公开(公告)号：US10273596B2

公开(公告)日：2019-04-30

申请号：US15753428

申请日：2016-08-18

Applicant: SUNEDISON SEMICONDUCTOR LIMITED ,  DAEVAC INTERNATIONAL CO., LTD.

Inventor： Seok Min Yun ,  Seong Su Park ,  Jun Hwan Ji ,  Won-Jin Choi ,  UiSung Jung ,  Young Jung Lee ,  Tae Su Koo ,  Sung-Jin Kim

IPC: C30B15/02 ,  C30B29/06 ,  C30B15/20 ,  C30B15/32 ,  C30B30/04 ,  C30B35/00 ,  B64G1/58 ,  B64G1/64 ,  B66D1/12 ,  G01S11/02 ,  G01S19/13 ,  B64G1/10 ,  G01P15/18

Abstract: A feed assembly supplies polysilicon to a growth chamber for growing a crystal ingot from a melt. An example system includes a housing having support rails for receiving one of a granular tray and a chunk tray and a feed material reservoir positioned above the support rails to selectively feed one of either the granular tray or the chunk tray. A valve mechanism and pulse vibrator are also disclosed.

公开(公告)号：US20190120925A1

公开(公告)日：2019-04-25

申请号：US16226976

申请日：2018-12-20

Applicant: XYZ Interactive Technologies Inc.

Inventor： ANDREW H. LOHBIHLER

IPC: G01S5/00 ,  G06F3/01 ,  G01S5/18 ,  G06F3/0346 ,  G01S5/02 ,  G01S17/10 ,  B25J13/08 ,  G01S15/10 ,  G01S11/06 ,  G01S11/12 ,  G01S17/87 ,  G01S11/02 ,  G01S11/14 ,  G01S13/10 ,  G01S5/16

Abstract: A method and apparatus for ranging finding of signal transmitting devices is provided. The method of signal reception is digitally based only and does not require receivers that are analog measurement devices. Ranging can be achieved using a single pulse emitting device operating in range spaced relation with a minimum of a single signal transmitter and a single digital receiver and processing circuitry. In general a plurality of transmitting pulsed emitters may be ranged and positioned virtually simultaneously in 3-dimensions (XYZ coordinates) using a configuration of a plurality of digital receivers arranged in any fixed 3-dimensional configuration. Applications may involve at least one single transmitter to receiver design to determine range, or at least one transmitted reflecting signal off from an object to determine range.