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公开(公告)号：US12058590B2
公开(公告)日：2024-08-06
申请号：US18103624
申请日：2023-01-31
发明人： Wilfred Edwin Booij , Endre Bakka
IPC分类号： H04W4/30 , G01S1/72 , G01S1/74 , G01S1/76 , G01S5/00 , G01S5/18 , H04B11/00 , H04W4/80 , H04W84/18
CPC分类号： H04W4/30 , G01S1/725 , G01S1/751 , G01S1/76 , G01S5/0036 , G01S5/0081 , G01S5/18 , H04B11/00 , H04W4/80 , H04W84/18
摘要： The present disclosure relates to a location determination system that includes acoustic transmitting devices, location tags, and a wireless mesh network, where the wireless mesh network uses battery-powered devices. A location tag receives acoustic signals (e.g., ultrasound signals) from an acoustic transmitting device. Clocks from members of the wireless mesh network are synchronized by observation of clock pairings, each clock pair formed by respective clocks in a transmitting device that transmits a message and a receiving device that receives the message. By analyzing the observed clock pairings, a best fit between the clock pairings may be determined. After selecting a reference clock, an acoustic transmission schedule may be propagated to the respective acoustic transmitting device.
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公开(公告)号：US12041923B2
公开(公告)日：2024-07-23
申请号：US17220057
申请日：2021-04-01
申请人： Marc L. Maynard
发明人： Marc L. Maynard
CPC分类号： A01K97/125 , A01K97/00 , G01S1/751
摘要： An electronic fish finder transducer lifting system includes a mechanical actuating device; a transducer lifting device; an electronic fish finder attachment member, rotatably connected to the transducer lifting device, configured to attach to an electronic fish finder; and a mechanical linkage, connected to the mechanical actuating device and the transducer lifting device, configured to transfer force, applied to the mechanical actuating device, to the transducer lifting device to lift a front portion of the transducer lifting device.
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公开(公告)号：US11079469B2
公开(公告)日：2021-08-03
申请号：US15591272
申请日：2017-05-10
摘要： A method and apparatus for locating a target in a venue is described. A backend controller activates transmitters in a venue to send burst signals using a double symmetry configuration formed of a plurality of separate transmitter groups. The backend controller activates the transmitters into a second, different configuration for bursting. The resulting location signal information from each configuration is obtained by the backend controller, which then more accurately determines the location of the target in the venue.
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公开(公告)号：US10998984B2
公开(公告)日：2021-05-04
申请号：US16396731
申请日：2019-04-28
发明人： Francesco Tonolini , Fadel Adib
摘要： An underwater transmitter may generate underwater pressure waves that encode bits of data. The pressure waves may travel to, and created minute vibrations in, the water's surface. An airborne radar may detect radar signals that reflect from the water's surface. The surface vibrations may modulate the phase of the reflected radar signal. The radar receiver may, based on the variation in the phase of the reflected radar signal, decode the data that was initially encoded in the underwater pressure waves. The underwater pressure waves may be frequency modulated, such as by orthogonal frequency-division multiplexing. Alternatively, the surface vibrations may be detected by a camera, interferometer or other light sensor. Alternatively, the pressure waves may propagate through a media other than water. For instance, the pressure waves may propagate through bodily tissue, or may propagate through oil or a liquid fracking mixture in an oil or gas well.
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公开(公告)号：US20200344716A1
公开(公告)日：2020-10-29
申请号：US16919822
申请日：2020-07-02
申请人： ZEROKEY INC.
摘要： A range-finding and/or object-positioning system comprises one or more target devices; one or more reference devices communicating with said one or more target devices via one or more wireless signal sets, each wireless signal set comprising at least a first-speed signal having a first transmission speed and a second-speed signal having a second transmission speed, and the first transmission speed being higher than the second transmission speed; and at least one processing unit performing actions for determining at least one distance between one target device and one reference device based on the time difference between the receiving time of the first-speed signal and the receiving time of the second-speed signal of the wireless signal set communicated between said reference and target devices.
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公开(公告)号：US10736075B2
公开(公告)日：2020-08-04
申请号：US16560543
申请日：2019-09-04
申请人： ZEROKEY INC.
摘要： A range-finding and/or object-positioning system comprises one or more target devices; one or more reference devices communicating with said one or more target devices via one or more wireless signal sets, each wireless signal set comprising at least a first-speed signal having a first transmission speed and a second-speed signal having a second transmission speed, and the first transmission speed being higher than the second transmission speed; and at least one processing unit performing actions for determining at least one distance between one target device and one reference device based on the time difference between the receiving time of the first-speed signal and the receiving time of the second-speed signal of the wireless signal set communicated between said reference and target devices.
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公开(公告)号：US10024952B2
公开(公告)日：2018-07-17
申请号：US15784632
申请日：2017-10-16
申请人： Google LLC
摘要： Systems and methods for identifying device location are provided. The method can include providing, by a mobile computing device, at least a first ultrasonic signal to a first and a second self-organizing beacon device. The method can include receiving, by the mobile computing device, a first radio frequency signal including the location of the first beacon device and a second radio frequency signal including the location of the second beacon device. The method can further include determining a first time-of-flight associated with the first beacon device and a second time-of-flight associated with the second beacon device. The method can include determining a location of the mobile computing device based at least in part on the first time-of-flight, the second time-of-flight, the location of the first beacon device, and the location of the second beacon device.
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公开(公告)号：US20180190255A1
公开(公告)日：2018-07-05
申请号：US15739249
申请日：2016-05-12
摘要： The invention relates to hydroacoustics and more specifically to hydroacoustic devices comprising, disposed in a single housing, a converter of liquid-medium oscillations and electrical signals, capable of receiving and/or transmitting hydroacoustic signals, the converter being disposed on a board which is connected to a switch cable for providing power and transmitting electrical signals, and may be used as a receiver and/or transmitter of hydroacoustic signals in water. According to the invention, the housing of the to hydroacoustic device is formed by the outer surfaces of the converter and board, and by a protective material which coats all of said surfaces, said material allowing for a transmission of hydroacoustic oscillations and being capable of transitioning from a highly-elastic or viscous-flow state to a solid state. The achieved technical result consists in simplifying the design of the device.
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公开(公告)号：US09791546B2
公开(公告)日：2017-10-17
申请号：US14448161
申请日：2014-07-31
摘要： An ultrasonic locationing system using a dual phase pulse includes an emitter emitting two consecutive frequency bursts, each having a different phase, within one ultrasonic pulse. A receiver microphone receives the ultrasonic pulse, and a processor runs an amplitude-based detection algorithm on the pulse for a band of frequencies of interest and detects a first burst of the pulse within the proper frequency band and having an amplitude exceeding a threshold. Whereupon, the processor determines a relative phase difference between the first burst and a second burst of the pulse and determines whether the relative phase difference is within a predetermined acceptance window, indicating that the pulse is valid for use in locationing the emitter and associated mobile device.
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公开(公告)号：US09709655B2
公开(公告)日：2017-07-18
申请号：US14649764
申请日：2013-12-27
申请人： Rakuten, Inc.
发明人： Yo Shibata , Misato Takahashi , Yuki Sato
摘要： Provided is an ultrasonic-wave communication system where the influence of ambient noise and the Doppler effect are suppressed and where a user of a portable terminal is prevented from hearing unwanted sound. After performing encryption processing of predetermined information such as store information, a beacon 5 sends out predetermined-information-containing beacon information of one channel as ultrasonic waves into the salesroom 3 by combining a control carrier, a first carrier, and a second carrier in such a way that a first carrier signal and a second carrier signal are output between control carrier signals a number of times according to the predetermined information and that a state where the first carrier signal and/or the second carrier signal is output is maintained.
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