公开(公告)号：US20200059640A1

公开(公告)日：2020-02-20

申请号：US16393624

申请日：2019-04-24

Applicant: University of Washington

Inventor： Samuel R. Browd ,  Joshua R. Smith ,  Rufus Griffin Nicoll

IPC: H04N13/344 ,  G06F3/14 ,  H04N13/156 ,  A61B90/00 ,  H04N13/239 ,  A61B1/00 ,  A61B1/05 ,  A61B1/045 ,  H04N13/111 ,  G06F3/01 ,  H04N13/00

Abstract: The present technology relates generally to systems and methods for mediated-reality surgical visualization. A mediated-reality surgical visualization system includes an opaque, head-mounted display assembly comprising a frame configured to be mounted to a user's head, an image capture device coupled to the frame, and a display device coupled to the frame, the display device configured to display an image towards the user. A computing device in communication with the display device and the image capture device is configured to receive image data from the image capture device and present an image from the image data via the display device.

公开(公告)号：US10270639B2

公开(公告)日：2019-04-23

申请号：US15958880

申请日：2018-04-20

Applicant: UNIVERSITY OF WASHINGTON

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Aaron N. Parks ,  Angli Liu

IPC: H04L1/02 ,  H04L27/26 ,  H04K3/00 ,  H04B1/40 ,  H04B7/0413

Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.

公开(公告)号：US20170331509A1

公开(公告)日：2017-11-16

申请号：US15601836

申请日：2017-05-22

Applicant: University of Washington

Inventor： Shyamnath Gollakota ,  Joshua R. Smith ,  Vincent Liu ,  Aaron N. Parks ,  Vamsi Talla

IPC: H04B1/40

CPC classification number: H04B1/40

Abstract: Apparatuses, systems, ambient backscatter transceivers, and methods for modulating a backscatter of an ambient RF signal are described. An example system may include an ambient backscatter transceiver comprising an antenna that is configured to receive a backscattered ambient radio frequency (RF) signal. The ambient backscatter transceiver is configured to demodulate the backscattered ambient RF signal to retrieve first data. The backscattered ambient RF signal is generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal is encoded with modulated to provide second data at a second frequency.

公开(公告)号：US09415149B2

公开(公告)日：2016-08-16

申请号：US14481569

申请日：2014-09-09

Applicant: University of Washington through its Center for Commercialization

Inventor： Joshua R. Smith ,  Pramod Bonde ,  Benjamin H. Waters ,  Alanson P. Sample

IPC: A61N1/362 ,  A61M1/12 ,  A61M1/10

CPC classification number: A61M1/127 ,  A61M1/101 ,  A61M1/1086 ,  A61M1/122 ,  A61M2205/04 ,  A61M2205/3515 ,  A61M2205/3523 ,  A61M2205/3561 ,  A61M2205/8243 ,  H03H7/40

Abstract: A ventricular assist device (VAD) system includes one or more external subsystems including an amplifier energizing a drive loop with alternating current, and a Tx resonator inductively coupled to the drive loop. An implanted subsystem includes a VAD, an Rx resonator that forms a magnetically coupled resonator with the Tx resonator, and a load loop for providing power to the VAD that is inductively coupled to the Rx resonator. A sensor monitors the drive loop and a controller uses the sensor data to adjust a system parameter to optimize energy transfer performance. Distributing a plurality of the external subsystems throughout a defined space provides a patient with freedom of movement within the defined space.

Abstract translation: 心室辅助装置（VAD）系统包括一个或多个外部子系统，包括用交流电驱动驱动环路的放大器，和感应耦合到驱动环路的Tx谐振器。 植入的子系统包括VAD，形成与Tx谐振器的磁耦合谐振器的Rx谐振器，以及用于向感应耦合到Rx谐振器的VAD提供功率的负载环路。 传感器监控驱动环路，控制器使用传感器数据来调整系统参数以优化能量传输性能。 在整个定义的空间内分布多个外部子系统为患者提供在所定义空间内的移动自由度。

公开(公告)号：US08827889B2

公开(公告)日：2014-09-09

申请号：US13843884

申请日：2013-03-15

Applicant: University of Washington through its Center for Commercialization

Inventor： Joshua R. Smith ,  Pramod Bonde ,  Benjamin H. Waters ,  Alanson P. Sample

IPC: A61N1/362 ,  A61M1/10 ,  A61M1/12

CPC classification number: A61M1/127 ,  A61M1/101 ,  A61M1/1086 ,  A61M1/122 ,  A61M2205/04 ,  A61M2205/3515 ,  A61M2205/3523 ,  A61M2205/3561 ,  A61M2205/8243 ,  H03H7/40

Abstract: A ventricular assist device (VAD) system includes one or more external subsystems including an amplifier energizing a drive loop with alternating current, and a Tx resonator inductively coupled to the drive loop. An implanted subsystem includes a VAD, an Rx resonator that forms a magnetically coupled resonator with the Tx resonator, and a load loop for providing power to the VAD that is inductively coupled to the Rx resonator. A sensor monitors the drive loop and a controller uses the sensor data to adjust a system parameter to optimize energy transfer performance. Distributing a plurality of the external subsystems throughout a defined space provides a patient with freedom of movement within the defined space.

Abstract translation: 心室辅助装置（VAD）系统包括一个或多个外部子系统，包括用交流电驱动驱动环路的放大器，和感应耦合到驱动环路的Tx谐振器。 植入的子系统包括VAD，形成与Tx谐振器的磁耦合谐振器的Rx谐振器，以及用于向感应耦合到Rx谐振器的VAD提供功率的负载环路。 传感器监控驱动环路，控制器使用传感器数据来调整系统参数以优化能量传输性能。 在整个定义的空间内分布多个外部子系统为患者提供在所定义空间内的移动自由度。

公开(公告)号：US12178403B2

公开(公告)日：2024-12-31

申请号：US18188774

申请日：2023-03-23

Applicant: University of Washington

Inventor： Joshua R. Smith ,  Samuel R. Browd ,  Rufus Griffin Nicoll ,  James Andrew Youngquist

IPC: A61B1/00 ,  A61B1/045 ,  H04N13/243 ,  H04N13/254 ,  H04N13/282 ,  H04N13/344

Abstract: Systems and methods for capturing and rendering light fields for head-mounted displays are disclosed. A mediated-reality visualization system includes a head-mounted display assembly comprising a frame configured to be mounted to a user's head and a display device coupled to the frame. An imaging assembly separate and spaced apart from the head-mounted display assembly is configured to capture light-field data. A computing device in communication with the imaging assembly and the display device is configured to receive light-field data from the imaging assembly and render one or more virtual cameras. Images from the one or more virtual cameras are presented to a user via the display device.

公开(公告)号：US20240000295A1

公开(公告)日：2024-01-04

申请号：US18188774

申请日：2023-03-23

Applicant: University of Washington

Inventor： Joshua R. Smith ,  Samuel R. Browd ,  Rufus Griffin Nicoll ,  James Andrew Youngquist

IPC: A61B1/00 ,  H04N13/254 ,  H04N13/344 ,  H04N13/243 ,  H04N13/282 ,  A61B1/045

CPC classification number: A61B1/00193 ,  H04N13/254 ,  H04N13/344 ,  H04N13/243 ,  H04N13/282 ,  A61B1/00101 ,  A61B1/045 ,  A61B1/00181 ,  A61B1/000095 ,  A61B1/00194

Abstract: Systems and methods for capturing and rendering light fields for head-mounted displays are disclosed. A mediated-reality visualization system includes a head-mounted display assembly comprising a frame configured to be mounted to a user's head and a display device coupled to the frame. An imaging assembly separate and spaced apart from the head-mounted display assembly is configured to capture light-field data. A computing device in communication with the imaging assembly and the display device is configured to receive light-field data from the imaging assembly and render one or more virtual cameras. Images from the one or more virtual cameras are presented to a user via the display device.

公开(公告)号：US20210391754A1

公开(公告)日：2021-12-16

申请号：US17461885

申请日：2021-08-30

Applicant: University of Washington

Inventor： Joshua R. Smith ,  Benjamin Waters

IPC: H02J50/10 ,  H02J50/80 ,  H04B5/00 ,  H02J50/12

Abstract: A wireless power transfer system includes a transmitter configured to transmit power to a receiver, for example, through coupled resonators. The transmitter receives feedback from the receiver, and uses the feedback to control the power transmission, to control a parameter at the receiver, for example, a rectified voltage output by the receiver. The feedback to the transmitter may be provided, for example, by an out-of-band radio system between the transmitter and receiver, by a reflection coefficient at the transmitter, and/or by an encoded modulation of power in the receiver, for example, in an impedance matching module. The transmitter may control the transmitted power, for example, by controlling a transmitter signal generator voltage (VSIG), a transmitter gate driver voltage (VGD), a transmitter amplifier voltage (VPA), and/or an impedance setting in a transmitter impedance matching module.

公开(公告)号：US20210339008A1

公开(公告)日：2021-11-04

申请号：US17376861

申请日：2021-07-15

Applicant: University of Washington through its Center for Commercialization

Inventor： Joshua R. Smith ,  Benjamin H. Waters ,  Scott Wisdom ,  Alanson P. Sample

IPC: A61M60/871 ,  H02J50/90 ,  H02J50/12 ,  A61M60/50

Abstract: An adaptive system for efficient and long-range wireless power delivery using magnetically coupled resonators responds to changes in a dynamic environment, and maintains high efficiency over a narrow or fixed frequency range. The system uses adaptive impedance matching to maintain high efficiency. The wireless power transfer system includes a drive inductor coupled to a high-Q transmitter coil, and a load inductor coupled to a high-Q receiver coil. The transmitter coil and receiver coil for a magnetically coupled resonator. A first matching network is (i) operably coupled to the drive inductor and configured to selectively adjust the impedance between the drive inductor and the transmitter coil, or (ii) is operably coupled to the load inductor and configured to selectively adjust the impedance between the load inductor and the receiver coil.

公开(公告)号：US10812130B2

公开(公告)日：2020-10-20

申请号：US16343088

申请日：2017-10-18

Applicant: University of Washington

Inventor： Vamsi Talla ,  Mehrdad Hessar ,  Joshua R. Smith ,  Shyamnath Gollakota ,  Ali Najafi ,  Bryce Kellogg

IPC: H04B1/69 ,  H04B1/10 ,  H04B1/7143 ,  H04L5/14

Abstract: Examples of backscatter systems, device, and techniques are described herein. Example backscatter devices may utilize CSS modulation to provide backscatter signals including CSS signals (e.g., LoRa packets). Utilizing CSS modulation may advantageously allow for backscatter communication over wide areas. Examples of backscatter devices described herein may toggle the impedance of the backscatter device between multiple (e.g., eight) impedances to reduce and/or eliminate higher order harmonic components in the backscatter signal (e.g., third and fifth harmonic components).