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).
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Patent number: 10951446Abstract: 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: GrantFiled: January 26, 2017Date of Patent: March 16, 2021Assignee: University of WashingtonInventors: Bryce Kellogg, Joshua R. Smith, Shyamnath Gollakota, Vamsi Talla, Vikram S. Iyer
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Patent number: 10873363Abstract: 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: GrantFiled: August 12, 2016Date of Patent: December 22, 2020Assignee: University of WashingtonInventors: Shyamnath Gollakota, Bryce Kellogg, Vamsi Talla, Joshua R. Smith
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Patent number: 10812130Abstract: 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: GrantFiled: October 18, 2017Date of Patent: October 20, 2020Assignee: University of WashingtonInventors: Vamsi Talla, Mehrdad Hessar, Joshua R. Smith, Shyamnath Gollakota, Ali Najafi, Bryce Kellogg
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Publication number: 20200212956Abstract: 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: ApplicationFiled: August 12, 2016Publication date: July 2, 2020Applicant: University of WashingtonInventors: Shyamnath Gollakota, Bryce Kellogg, Vamsi Talla, Joshua R. Smith
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Patent number: 10652073Abstract: 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: GrantFiled: April 4, 2017Date of Patent: May 12, 2020Assignee: University of WashingtonInventors: Vamsi Talla, Joshua R. Smith, Shyamnath Gollakota, Bryce Kellogg
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Publication number: 20200052734Abstract: 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: ApplicationFiled: October 10, 2017Publication date: February 13, 2020Inventors: Vamsi Talla, Mehrdad Hessar, Joshua R, Smith, Shyamnath Goliakota, Ali Najafi, Bryce Kellogg
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Patent number: 10382161Abstract: 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: GrantFiled: February 11, 2015Date of Patent: August 13, 2019Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
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Patent number: 10383126Abstract: 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: GrantFiled: September 4, 2015Date of Patent: August 13, 2019Assignee: University of WashingtonInventors: Shyamnath Gollakota, Vamsi Talla, Bryce Kellogg, Ben Ransford, Saman Naderiparizi, Joshua R. Smith
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Publication number: 20190158341Abstract: 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: ApplicationFiled: April 4, 2017Publication date: May 23, 2019Applicant: University of WashingtonInventors: Vamsi Talla, Joshua R, Smith, Shyamnath Gollskota, Bryce Kellogg
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Patent number: 10187177Abstract: 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: GrantFiled: February 11, 2015Date of Patent: January 22, 2019Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
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Publication number: 20180375703Abstract: 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: ApplicationFiled: January 26, 2017Publication date: December 27, 2018Applicant: University of WashingtonInventors: Bryce Kellogg, Joshua R. Smith, Shyamnath Gollakota, Vamsi Talla, Vikram S. Iyer
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Publication number: 20170208597Abstract: 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: ApplicationFiled: September 4, 2015Publication date: July 20, 2017Applicant: University of WashingtonInventors: Shyamnath Gollakota, Vamsi Talla, Bryce Kellogg, Ben Ransford, Saman Naderiparizi, Joshua R. Smith
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Publication number: 20170180075Abstract: 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: ApplicationFiled: February 11, 2015Publication date: June 22, 2017Applicant: UNIVERSITY OF WASHINGTONInventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
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Publication number: 20160259421Abstract: 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: ApplicationFiled: October 8, 2014Publication date: September 8, 2016Applicant: UNIVERSITY OF WASHINGTON THROUGH ITS CENTER FOR COMMERCIALIZATIONInventors: Shyamnath Gollakota, Bryce Kellogg, Vamsi Talla, Rajalakshmi Nandakumar