Patents by Inventor Bryce Kellogg

Bryce Kellogg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10812130
    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).
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: October 20, 2020
    Assignee: University of Washington
    Inventors: Vamsi Talla, Mehrdad Hessar, Joshua R. Smith, Shyamnath Gollakota, Ali Najafi, Bryce Kellogg
  • Publication number: 20200212956
    Abstract: Examples described herein include devices and systems utilizing backscatter communication to directly generate transmissions in accordance with wireless communication protocols that can be decoded existing devices. Examples include devices that generate 802.11b transmissions using backscatter communication. Examples of network stacks are described which may facilitate backscatter devices to coexist with other devices (e.g. in the ISM band), without incurring, or reducing a need for, the power consumption or carrier sense and medium access control operations.
    Type: Application
    Filed: August 12, 2016
    Publication date: July 2, 2020
    Applicant: University of Washington
    Inventors: Shyamnath Gollakota, Bryce Kellogg, Vamsi Talla, Joshua R. Smith
  • Patent number: 10652073
    Abstract: Examples described herein include backscatter devices which may transmit orthogonal frequency division multiplexing (OFDM) signals. Techniques for complex analog backscatter are described. Examples of impedance circuitry are described which may be used to provide real and imaginary components of impedance in accordance with inphase and quadrature bits.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: May 12, 2020
    Assignee: University of Washington
    Inventors: Vamsi Talla, Joshua R. Smith, Shyamnath Gollakota, Bryce Kellogg
  • Publication number: 20200052734
    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).
    Type: Application
    Filed: October 10, 2017
    Publication date: February 13, 2020
    Inventors: Vamsi Talla, Mehrdad Hessar, Joshua R, Smith, Shyamnath Goliakota, Ali Najafi, Bryce Kellogg
  • Patent number: 10382161
    Abstract: Example devices described herein include endpoint devices which may communicate with an access point device by modulating a channel associated with the wireless communication to encode transmit data. The channel modulation may be performed by utilizing a switch to control an impedance of an antenna at the endpoint device to either reflect or absorb wireless network communication signals received by the endpoint device. The access point device may extract the transmit data by decoding changes in the channel caused, at least in part, by the modulation. Access point devices may transmit a pattern of packets—the presence or absence of which may correspond with transmit data. Endpoint devices may decode this data by using an energy detector to differentiate between the presence or absence of a packet.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: August 13, 2019
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
  • Patent number: 10383126
    Abstract: Examples described herein include wireless transmitters configured for power transmission. Example wireless transmitters may insert power packets into wireless communications such that power harvesting circuitry may harvest sufficiently continuous power from the wireless communication signals. Example power harvesting circuitry is configured to harvest power across multiple wireless communication channels. Example chargers are described which may harvest power from wireless communication signals (e.g. Wi-Fi signals).
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: August 13, 2019
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Vamsi Talla, Bryce Kellogg, Ben Ransford, Saman Naderiparizi, Joshua R. Smith
  • Publication number: 20190158341
    Abstract: Examples described herein include backscatter devices which may transmit orthogonal frequency division multiplexing (OFDM) signals. Techniques for complex analog backscatter are described. Examples of impedance circuitry are described which may be used to provide real and imaginary components of impedance in accordance with inphase and quadrature bits.
    Type: Application
    Filed: April 4, 2017
    Publication date: May 23, 2019
    Applicant: University of Washington
    Inventors: Vamsi Talla, Joshua R, Smith, Shyamnath Gollskota, Bryce Kellogg
  • Patent number: 10187177
    Abstract: Example devices described herein include endpoint devices which may communicate with an access point device by modulating a channel associated with the wireless communication to encode transmit data. The channel modulation may be performed by utilizing a switch to control an impedance of an antenna at the endpoint device to either reflect or absorb wireless network communication signals received by the endpoint device. The access point device may extract the transmit data by decoding changes in the channel caused, at least in part, by the modulation. Access point devices may transmit a pattern of packets—the presence or absence of which may correspond with transmit data. Endpoint devices may decode this data by using an energy detector to differentiate between the presence or absence of a packet.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: January 22, 2019
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
  • Publication number: 20180375703
    Abstract: Examples described herein include devices and systems utilizing backscatter communication to generate transmissions in accordance with wireless communication protocols. Examples are described including single sideband operation, generation of a carrier wave using Bluetooth, downlink communication to a backscatter device, and combinations thereof.
    Type: Application
    Filed: January 26, 2017
    Publication date: December 27, 2018
    Applicant: University of Washington
    Inventors: Bryce Kellogg, Joshua R. Smith, Shyamnath Gollakota, Vamsi Talla, Vikram S. Iyer
  • Publication number: 20170208597
    Abstract: Examples described herein include wireless transmitters configured for power transmission. Example wireless transmitters may insert power packets into wireless communications such that power harvesting circuitry may harvest sufficiently continuous power from the wireless communication signals. Example power harvesting circuitry is configured to harvest power across multiple wireless communication channels. Example chargers are described which may harvest power from wireless communication signals (e.g. Wi-Fi signals).
    Type: Application
    Filed: September 4, 2015
    Publication date: July 20, 2017
    Applicant: University of Washington
    Inventors: Shyamnath Gollakota, Vamsi Talla, Bryce Kellogg, Ben Ransford, Saman Naderiparizi, Joshua R. Smith
  • Publication number: 20170180075
    Abstract: Example devices described herein include endpoint devices which may communicate with an access point device by modulating a channel associated with the wireless communication to encode transmit data. The channel modulation may be performed by utilizing a switch to control an impedance of an antenna at the endpoint device to either reflect or absorb wireless network communication signals received by the endpoint device. The access point device may extract the transmit data by decoding changes in the channel caused, at least in part, by the modulation. Access point devices may transmit a pattern of packets—the presence or absence of which may correspond with transmit data. Endpoint devices may decode this data by using an energy detector to differentiate between the presence or absence of a packet.
    Type: Application
    Filed: February 11, 2015
    Publication date: June 22, 2017
    Applicant: UNIVERSITY OF WASHINGTON
    Inventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
  • Publication number: 20160259421
    Abstract: Example devices, systems, and methods described herein extract gesture information from wireless signals. Examples described herein may extract gesture information from changes in the magnitude of the amplitude of the received wireless signals, or portions of the received wireless signals (e.g., channel state information, RSSI information, RCPI information). Time-domain classification of gestures may proceed based on the amplitude changes. In this manner, sufficiently low power operation may be achieved to enable “through-the-pocket” gesture recognition on mobile devices in some examples.
    Type: Application
    Filed: October 8, 2014
    Publication date: September 8, 2016
    Applicant: UNIVERSITY OF WASHINGTON THROUGH ITS CENTER FOR COMMERCIALIZATION
    Inventors: Shyamnath Gollakota, Bryce Kellogg, Vamsi Talla, Rajalakshmi Nandakumar