Patents by Inventor Vamsi Talla

Vamsi Talla 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).

  • 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: 10447331
    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.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: October 15, 2019
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • 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
  • 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: 20180358996
    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.
    Type: Application
    Filed: July 24, 2018
    Publication date: December 13, 2018
    Applicant: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • Patent number: 10033424
    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.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: July 24, 2018
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • Publication number: 20170331509
    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.
    Type: Application
    Filed: May 22, 2017
    Publication date: November 16, 2017
    Applicant: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • 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
  • Patent number: 9680520
    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.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: June 13, 2017
    Assignee: University of Washington Through Its Center For Commercialization
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • 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
  • Publication number: 20150311944
    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.
    Type: Application
    Filed: July 9, 2015
    Publication date: October 29, 2015
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • Patent number: 9153437
    Abstract: Methods for forming inorganic nanostructures are provided. The methods create the inorganic nanostructures by positioning a writing electrode (e.g., a conductive “stamp”) spaced nanometers above a substrate such that a precursor is intermediate the two. Applying an electric field, a voltage bias, an ionic current, or an electronic current between the writing electrode and the substrate converts the precursor into an inorganic solid material (e.g., a semiconductor such as silicon or germanium) in the area of the writing electrode.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: October 6, 2015
    Assignee: University of Washington through its Center for Commercialization
    Inventors: Marco Rolandi, Hideki Sato, Stephanie Vasko, Michael Brasino, Adnan Kapetanovic, Vamsi Talla
  • Publication number: 20140162436
    Abstract: Methods for forming inorganic nanostructures are provided. The methods create the inorganic nanostructures by positioning a writing electrode (e.g., a conductive “stamp”) spaced nanometers above a substrate such that a precursor is intermediate the two. Applying an electric field, a voltage bias, an ionic current, or an electronic current between the writing electrode and the substrate converts the precursor into an inorganic solid material (e.g., a semiconductor such as silicon or germanium) in the area of the writing electrode.
    Type: Application
    Filed: March 30, 2012
    Publication date: June 12, 2014
    Applicant: University of Washington Through Its Center for Commercialization
    Inventors: Marco Rolandi, Michael Brasino, Adnan Kapetanovic, Vamsi Talla, Stephanie Vasko, Hideki Sato