公开(公告)号：US20190245629A1

公开(公告)日：2019-08-08

申请号：US16314881

申请日：2016-08-25

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： GUO DONG GAN ,  WAI MUN LEE ,  BING QIN LIM

IPC: H04B11/00 ,  H04L29/08 ,  H04W12/00 ,  G06F1/16

CPC classification number: H04B11/00 ,  G06F1/163 ,  H04L67/12 ,  H04W4/80 ,  H04W12/00305

Abstract: A method and apparatus for quickly forming a PAN is describe herein. During operation, a modulated vibration will be received that identifies that network formation is to take place. All devices detecting the vibration will be paired/associated to form a PAN. In one embodiment of the present invention a first device generates the vibration and the subset of available devices will form a PAN with the first device acting as a master device within the formed PAN. In another embodiment of the present invention, a piece of clothing (e.g., a vest) is equipped with a haptic module (vibrating circuitry) to generate the vibration. All pieces of equipment attached to the piece of clothing will receive the vibration and pair accordingly.

公开(公告)号：US20190231189A1

公开(公告)日：2019-08-01

申请号：US16381716

申请日：2019-04-11

Applicant: Northeastern University

Inventor： Tommaso MELODIA ,  Giuseppe Enrico SANTAGATI

IPC: A61B5/00 ,  G16H40/63 ,  H04B11/00 ,  H04W84/18

CPC classification number: A61B5/0015 ,  A61B5/0024 ,  A61B5/0026 ,  A61B5/0028 ,  A61B5/0205 ,  A61B5/02438 ,  G16H40/63 ,  H04B11/00 ,  H04W84/18

Abstract: An ultrasonic communication system and method provide a networking framework for wearable devices based on ultrasonic communications. The ultrasonic communication system and method incorporate a set of physical, data link, network and application layer functionalities that can flexibly adapt to application and system requirements to efficiently distribute information between ultrasonic wearable devices.

公开(公告)号：US20190215613A1

公开(公告)日：2019-07-11

申请号：US16093514

申请日：2017-03-28

Applicant: BAE SYSTEMS plc

Inventor： LIONEL WILLIAM JOHN KENT

IPC: H04R17/00 ,  H04R3/00

CPC classification number: H04R17/00 ,  H04B11/00 ,  H04R3/00

Abstract: According to the present invention, there is provided an electroacoustic transducer, comprising: a first electrode; a second electrode; a piezoelectric material at least partially sandwiched between the first electrode and the second electrode; and a flexible electrical connector in electrical connection with the first or second electrode at discrete points around a periphery of that electrode, the discrete points being distributed about a substantial portion of that periphery.

公开(公告)号：US20190208381A1

公开(公告)日：2019-07-04

申请号：US15858632

申请日：2017-12-29

Applicant: Sonitor Technologies AS

Inventor： Wilfred Edwin BOOIJ ,  Endre Bakka

IPC: H04W4/30 ,  H04B11/00 ,  H04W4/80 ,  H04W84/18

CPC classification number: H04W4/30 ,  G01S1/725 ,  G01S1/74 ,  G01S1/76 ,  G01S5/0036 ,  G01S5/0081 ,  G01S5/18 ,  H04B11/00 ,  H04W4/80 ,  H04W84/18

Abstract: 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.

公开(公告)号：US20190204408A1

公开(公告)日：2019-07-04

申请号：US15858700

申请日：2017-12-29

Applicant: Sonitor Technologies AS

Inventor： Wilfred Edwin BOOIJ

IPC: G01S5/18 ,  G01S3/802

CPC classification number: G01S5/18 ,  G01S3/8022 ,  G01S3/8086 ,  G01S5/30 ,  G01S11/14 ,  G01S15/8977 ,  H04B11/00

Abstract: The present disclosure relates to an acoustic position determination system that includes a mobile communication device and at least one base transmitter unit. The mobile communication device is configured to transmit and receive acoustic signals. Due to relative movements between the mobile communication device and the base transmitter unit, frequencies of the received signals shift due to Doppler effect. The mobile communication device is configured to compensate Doppler frequency shifts in the received acoustic signals prior to performing a deconvolution decoding process. The mobile communication device is further configured to compensate Doppler frequency shifts and perform deconvolution decoding process on acoustic signals received from multiple signal transmission paths.

公开(公告)号：US20190200071A1

公开(公告)日：2019-06-27

申请号：US15519990

申请日：2015-10-15

Applicant: LISNR, Inc.

Inventor： William Knauer

IPC: H04N21/422 ,  H04N21/41 ,  H04N21/439 ,  H04N21/462 ,  H04N21/658

CPC classification number: H04N21/42203 ,  H04B11/00 ,  H04N21/4126 ,  H04N21/4394 ,  H04N21/4622 ,  H04N21/6581

Abstract: A method of encoding, and decoding, a human-inaudible acoustic signal 240 embedded within audio content, suitable for use within the processor of an encoding and broadcasting system or a decoding and receiving system 200, 202. A binary message is encoded into a sequence 1000, 2000 of symbols selected from a group of four or eight symbols, each symbol encoding two or three binary bits with an associated frequency. The human-inaudible acoustic signal may have a variable length, with the length of the signal encoded in a header 1002-1008, 2002-2009. The encoding uses both forward error correction and cyclic redundancy coding to increase the robustness of the transmission. Furthermore, the binary bits encoded by the symbols are selected such that a Hamming distance of a single bit transformation exists between symbols associated with adjacent frequencies, so that a frequency error creates only a single bit error.

公开(公告)号：US20180365915A1

公开(公告)日：2018-12-20

申请号：US16012562

申请日：2018-06-19

Applicant: Cubic Corporation

Inventor： Tom Vilhelmsen

IPC: G07C9/00 ,  G06K7/10 ,  G07B15/02 ,  G10L19/018 ,  H04L29/06

CPC classification number: H04R1/222 ,  G06K7/1095 ,  G07B15/02 ,  G07B15/04 ,  G07C9/00007 ,  G07C9/00031 ,  G07C9/00309 ,  G07C2009/00388 ,  G07C2009/00412 ,  G09C5/00 ,  G10L19/018 ,  H04B11/00 ,  H04L9/3271 ,  H04L63/0853 ,  H04M1/6008 ,  H04M1/72522 ,  H04R3/00 ,  H04R29/004 ,  H04R2410/00 ,  H04R2499/11

Abstract: Systems, methods, and devices for implementing an audio assisted dynamic barcode system. A gate validation system may include a barcode reader, a speaker, and a processor configured to perform operations including receiving, using the barcode reader, a first barcode from a portable electronic device indicating a request for passage through a gate. The operations may also include outputting, using the speaker, an audio signal having a predetermined feature. The operations may further include receiving, using the barcode reader, a second barcode from the portable electronic device indicating a detected feature of the audio signal. The operations may further include determining that the detected feature matches the predetermined feature and, in response to determining that the detected feature matches the predetermined feature, facilitating passage of a holder of the portable electronic device through the gate.

公开(公告)号：US20180357997A1

公开(公告)日：2018-12-13

申请号：US16000352

申请日：2018-06-05

Applicant: Foster-Miller, Inc.

Inventor： Neil Judell

IPC: G10K11/178

CPC classification number: G10K11/17853 ,  G10K2210/108 ,  G10K2210/3028 ,  H04B1/525 ,  H04B11/00

Abstract: A method of performing cancellation for acoustic or electromagnetic measurement or communications includes receiving an output signal to be applied to a transmit transducer, introducing a delay to the output signal to produce a delayed output signal, applying the delayed output signal to the transmit transducer, receiving an input signal from a receiving transducer, wherein the input signal comprises at least a portion of the delayed output signal, and iteratively solving a Kalman filter problem as a function of the input signal, the output signal, and the delay to produce a first filtered input signal.

公开(公告)号：US20180332432A1

公开(公告)日：2018-11-15

申请号：US15978873

申请日：2018-05-14

Applicant: Google LLC

Inventor： Dean Harding ,  Andrew Foster

IPC: H04W4/02 ,  G01C21/36 ,  H04B11/00 ,  G01C21/34

CPC classification number: H04W4/02 ,  G01C21/3415 ,  G01C21/362 ,  G01C21/3667 ,  G01C21/3697 ,  H04B11/00

Abstract: This document describes systems, methods, devices, and other techniques for sharing navigation data among computing devices. The techniques can include identifying, by a first computing device, a second computing device, based on the first computing device detecting an audio signal emitted by one or more speakers of the second computing device, wherein the second computing device is running a navigation application that has been programed to navigate a geographic route. Using information encoded in the audio signal that was emitted by the one or more speakers of the second computing device, the first computing device can determine the geographic route that the navigation application running on the second computing device has been programmed to navigate. A representation of the geographic route can be displayed on an electronic display of the first computing device.

公开(公告)号：US20180322881A1

公开(公告)日：2018-11-08

申请号：US15589714

申请日：2017-05-08

Applicant: Motorola Mobility LLC

Inventor： Jun-Ki Min ,  Sudhir Vissa ,  Nikhil Ambha Madhusudhana ,  Vivek Tyagi ,  Mir Farooq Ali

IPC: G10L15/32 ,  G10L15/22 ,  H04B11/00

CPC classification number: G10L15/32 ,  G10L15/22 ,  G10L2015/223 ,  H04B11/00

Abstract: An electronic device includes one or more processors, an audio interface, operable with the one or more processors, and a voice interface engine. The audio interface receives first acoustic signals identifying a control operation for the one or more processors. The one or more processors cause the audio interface to exchange second acoustic signals with at least one other electronic device, thereby negotiating which device will perform the control operation.