Patents by Inventor Srikanth Kuthuru

Srikanth Kuthuru 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: 12267463
    Abstract: In example implementations, an apparatus is provided. The apparatus includes an adaptive filter and a double talk detector in communication with the adaptive filter. The adaptive filter is to calculate a transfer function with coefficients for a particular time that is applied to an output signal of a microphone to cancel echoes caused by a reference signal in the output signal of the microphone. The double talk detector is to determine a peak of the coefficients, detect double talk based on a location of the peak of the coefficients, and transmit a pause signal to the adaptive filter in response to detection of the double talk, wherein the pause signal is to pause a calculation of updates to the coefficients by the adaptive filter.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: April 1, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Srikanth Kuthuru, Sunil Bharitkar
  • Publication number: 20240353544
    Abstract: A LiDAR system includes an optical source to emit an optical beam along a target path towards a target and a reference path and a coherent receiver disposed in the reference path to produce a first mixed signal comprising a first portion of a reference beat signal and a second mixed signal comprising a second portion of the reference beat signal. The LiDAR system further includes a processor to combine the first mixed signal and the second mixed signal to generate a combined reference signal, wherein a negative image of a reference beat frequency signal produced by the optical beam and a local oscillator (LO) signal is suppressed to estimate a phase noise of the optical source to determine at least one of range or velocity information of the target.
    Type: Application
    Filed: July 1, 2024
    Publication date: October 24, 2024
    Inventors: Ryan Wayne Going, Kumar Bhargav Viswanatha, Pradeep Srinivasan, Srikanth Kuthuru
  • Patent number: 12087058
    Abstract: Examples for global motion suppression in an event-driven camera are described herein. In some examples, global motion of an event-driven camera is detected based on a plurality of pixels of an event-driven image sensor detecting events. The global motion may be suppressed by event-driven image sensor circuitry in response to detecting the global motion.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: September 10, 2024
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Madhu Sudan Athreya, M. Anthony Lewis, Srikanth Kuthuru
  • Patent number: 12025750
    Abstract: The LiDAR system includes a coherent receiver disposed in a reference path. The coherent receiver includes a 90° optical hybrid to receive a portion of an optical beam along the reference path and a local oscillator (LO) signal to generate multiple output signals. The coherent receiver includes a first photodetector to receive a first and a second output signal to generate a first mixed signal, and a second photodetector to receive a third and a fourth output signal to generate a second mixed signal. The LiDAR system further includes a processor to combine the first mixed signal and the second mixed signal to generate a combined reference signal. A negative image of a reference beat frequency signal produced by the optical beam and the LO signal is suppressed to estimate a phase noise of the optical source to determine at least one of range or velocity information of the target.
    Type: Grant
    Filed: April 25, 2023
    Date of Patent: July 2, 2024
    Assignee: Aeva, Inc.
    Inventors: Ryan Wayne Going, Kumar Bhargav Viswanatha, Pradeep Srinivasan, Srikanth Kuthuru
  • Patent number: 11937076
    Abstract: Acoustic echo cancellation for a video conference system is described. A location of a person in a room can be determined. An audio signal received from the location of the person can be captured using beamforming. An acoustic echo cancellation parameter can be determined based in part on the audio signal captured from the location of the person. Acoustic echo cancellation can be performed on the audio signal using the acoustic echo cancellation parameter.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: March 19, 2024
    Assignee: Hewlett-Packard Development Copmany, L.P.
    Inventors: Srikanth Kuthuru, Sunil Bharitkar, Madhu Sudan Athreya
  • Publication number: 20240036178
    Abstract: The LiDAR system includes a coherent receiver disposed in a reference path. The coherent receiver includes a 90° optical hybrid to receive a portion of an optical beam along the reference path and a local oscillator (LO) signal to generate multiple output signals. The coherent receiver includes a first photodetector to receive a first and a second output signal to generate a first mixed signal, and a second photodetector to receive a third and a fourth output signal to generate a second mixed signal. The LiDAR system further includes a processor to combine the first mixed signal and the second mixed signal to generate a combined reference signal. A negative image of a reference beat frequency signal produced by the optical beam and the LO signal is suppressed to estimate a phase noise of the optical source to determine at least one of range or velocity information of the target.
    Type: Application
    Filed: April 25, 2023
    Publication date: February 1, 2024
    Inventors: Ryan Wayne Going, Kumar Bhargav Viswanatha, Pradeep Srinivasan, Srikanth Kuthuru
  • Publication number: 20230410784
    Abstract: In example implementations, an apparatus is provided. The apparatus includes a plurality of microphones to record background sounds, a noise cancellation component to generate an inverted signal to negate the background sounds from an output signal, a memory to store sound patterns associated with known events, a speaker to output the output signal, and a processor. The processor is to compare a background sound of the background sounds to sound patterns stored in the memory, detect an event when the background sound matches a sound pattern and is coming from behind a user, and execute a corrective action to the output signal in response to the event being detected and the background sound coming from behind the user.
    Type: Application
    Filed: October 16, 2020
    Publication date: December 21, 2023
    Inventors: Amalendu Iyer, Manu Rastogi, Mithra Vankipuram, Srikanth Kuthuru
  • Publication number: 20230402191
    Abstract: Examples are described herein for determining aggregate psychological states of multiple individuals. In various examples, sensor data indicative of affects of multiple individuals may be analyzed. Based on the analyzing, the multiple individuals may be partitioned into multiple distinct clusters of individuals. An aggregate psychological state of the individuals of a given cluster of the multiple distinct clusters of individuals may be determined. Data indicative of the aggregate psychological state may be transmitted to cause a computing device to render output that conveys the aggregate psychological state of the individuals of the cluster.
    Type: Application
    Filed: October 20, 2020
    Publication date: December 14, 2023
    Inventors: Rafael Ballagas, Erika Siegel, Hiroshi Horii, Alexandre SANTOS DA SILVA, JR., Jishang Wei, Jose Dirceu Grundler RAMOS, Rafael Dal Zotto, Gabriel Lando, Srikanth Kuthuru
  • Publication number: 20230389842
    Abstract: Methods, systems, apparatus, and computer-readable media (transitory or non-transitory) are described herein for inferring psychological states. In various examples, data indicative of a measured affect of an individual may be processed using a regression model to determine a coordinate in a continuous space. The continuous space may be indexed based on a plurality of discrete psychological labels. In a first context, the coordinate in the continuous space may be mapped to one of a first set of the discrete psychological labels associated with the first context. In a second context, the coordinate in the continuous space may be mapped to one of a second set of the discrete psychological labels associated with the second context.
    Type: Application
    Filed: October 5, 2020
    Publication date: December 7, 2023
    Inventors: Erika SIEGEL, Rafael Ballagas, Srikanth Kuthuru, Jishang Wei, Hiroshi Horii, Alexandre Santos Da Silva Jr, Jose Dirceu Grundler Ramos, Rafael Dal Zotto, Gabriel Lando
  • Publication number: 20230171346
    Abstract: In example implementations, an apparatus is provided. The apparatus includes an adaptive filter and a double talk detector in communication with the adaptive filter. The adaptive filter is to calculate a transfer function with coefficients for a particular time that is applied to an output signal of a microphone to cancel echoes caused by a reference signal in the output signal of the microphone. The double talk detector is to determine a peak of the coefficients, detect double talk based on a location of the peak of the coefficients, and transmit a pause signal to the adaptive filter in response to detection of the double talk, wherein the pause signal is to pause a calculation of updates to the coefficients by the adaptive filter.
    Type: Application
    Filed: April 15, 2020
    Publication date: June 1, 2023
    Inventors: Srikanth Kuthuru, Sunil Bharitkar
  • Patent number: 11662444
    Abstract: The LiDAR system includes a coherent receiver disposed in a reference path. The coherent receiver includes a 90° optical hybrid to receive a portion of an optical beam along the reference path and a local oscillator (LO) signal to generate multiple output signals. The coherent receiver includes a first photodetector to receive a first and a second output signal to generate a first mixed signal, and a second photodetector to receive a third and a fourth output signal to generate a second mixed signal. The LiDAR system further includes a processor to combine the first mixed signal and the second mixed signal to generate a combined reference signal to suppress a negative image of a reference beat frequency signal to estimate a phase noise of the optical source to determine range and velocity information of the target.
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: May 30, 2023
    Assignee: Aeva, Inc.
    Inventors: Ryan Wayne Going, Kumar Bhargav Viswanatha, Pradeep Srinivasan, Srikanth Kuthuru
  • Patent number: 11601750
    Abstract: According to examples, an apparatus may include a processor and a non-transitory computer readable medium on which is stored instructions that the processor may execute to access an audio signal captured by a microphone of a user's speech while the microphone is in a muted state. The processor may also execute the instructions to analyze a spectral or frequency content of the accessed audio signal to determine whether the user was facing the microphone while the user spoke. In addition, based on a determination that the user was facing the microphone while the user spoke, the processor may execute the instructions to unmute the microphone.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: March 7, 2023
    Assignee: Hewlett-Packard Development Company, L.P
    Inventors: Srikanth Kuthuru, Sunil Bharitkar
  • Publication number: 20220114995
    Abstract: Audio signal dereverberation can be carried out in accordance instructions on a machine readable storage medium, using a processor. In an example, a location of a person in a room can be determined. An audio signal received from the location of the person can be captured using beamforming. Room properties can be determined based in part on a signal sweep of the room. A dereverberation parameter can be determined based in part on the location of the person and the room properties. The dereverberation parameter can be applied to the audio signal.
    Type: Application
    Filed: July 3, 2019
    Publication date: April 14, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Srikanth Kuthuru, Sunil Bharitkar, Madhu Sudan Athreya
  • Publication number: 20220116733
    Abstract: Acoustic echo cancellation for a video conference system is described. A location of a person in a room can be determined. An audio signal received from the location of the person can be captured using beamforming. An acoustic echo cancellation parameter can be determined based in part on the audio signal captured from the location of the person. Acoustic echo cancellation can be performed on the audio signal using the acoustic echo cancellation parameter.
    Type: Application
    Filed: July 3, 2019
    Publication date: April 14, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Srikanth Kuthuru, Sunil Bharitkar, Madhu Sudan Athreya
  • Publication number: 20220108551
    Abstract: Examples for global motion suppression in an event-driven camera are described herein. In some examples, global motion of an event-driven camera is detected based on a plurality of pixels of an event-driven image sensor detecting events. The global motion may be suppressed by event-driven image sensor circuitry in response to detecting the global motion.
    Type: Application
    Filed: June 25, 2019
    Publication date: April 7, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Madhu Sudan Athreya, M. Anthony Lewis, Srikanth Kuthuru
  • Publication number: 20210337308
    Abstract: According to examples, an apparatus may include a processor and a non-transitory computer readable medium on which is stored instructions that the processor may execute to access an audio signal captured by a microphone of a user's speech while the microphone is in a muted state. The processor may also execute the instructions to analyze a spectral or frequency content of the accessed audio signal to determine whether the user was facing the microphone while the user spoke. In addition, based on a determination that the user was facing the microphone while the user spoke, the processor may execute the instructions to unmute the microphone.
    Type: Application
    Filed: December 17, 2018
    Publication date: October 28, 2021
    Applicant: Hewlett-Packard Development Company, L.P
    Inventors: Srikanth Kuthuru, Sunil Bharitka