Patents by Inventor Sujai Chari

Sujai Chari 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: 20240120027
    Abstract: This disclosure describes methods, non-transitory computer readable media, and systems that can utilize a machine-learning model to refine structural variant calls of a call generation model. For example, the disclosed systems can train and utilize a structural variant refinement machine-learning model to reduce false positives and/or false negatives. Indeed, the disclosed systems can improve or refine structural variant calls (e.g., between 50-200 base pairs in length) determined by a call generation model by training and utilizing the structural variant refinement machine-learning model. As disclosed, the systems can determine sequencing metrics and can customize training data for a structural variant refinement machine-learning model to generate modified structural variant calls.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 11, 2024
    Inventors: Sujai Chari, Gavin Derek Parnaby, Naoki Nariai
  • Patent number: 9848384
    Abstract: Apparatuses, methods, apparatuses, and systems for of selectively deactivating portions of a receiver based on dynamic measurements are disclosed. One embodiment of a method includes receiving, by the receiver, a wireless signal, identifying a packet within the wireless signal, determining whether the packet cannot be decoded with a reliability greater than a threshold, and powering down at least a portion of the receiver after determining that the packet cannot be decoded with the reliability greater than the threshold.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: December 19, 2017
    Assignee: Imagination Technologies
    Inventors: Sujai Chari, Meesaraganda Surendra Raju
  • Patent number: 9806871
    Abstract: Apparatuses, methods, apparatuses, and systems for selective subcarrier processing are disclosed. One embodiment of a method includes determining whether a signal quality of a received multi-carrier signal is better than a predetermined signal quality, wherein the predetermined signal quality is selected to ensure that a probability of error free decoding of the received signal is greater than a predetermined threshold, and after determining that the signal quality of the received multi-carrier signal is better than the predetermined signal quality, determining which of subcarriers of the multi-carrier signal to perform receive signal processing based on a relative signal quality of each of the subcarriers.
    Type: Grant
    Filed: May 17, 2015
    Date of Patent: October 31, 2017
    Assignee: Imagination Technologies
    Inventors: Sujai Chari, Meesaraganda Surendra Raju
  • Publication number: 20170238255
    Abstract: Apparatuses, methods, apparatuses, and systems for of selectively deactivating portions of a receiver based on dynamic measurements are disclosed. One embodiment of a method includes receiving, by the receiver, a wireless signal, identifying a packet within the wireless signal, determining whether the packet cannot be decoded with a reliability greater than a threshold, and powering down at least a portion of the receiver after determining that the packet cannot be decoded with the reliability greater than the threshold.
    Type: Application
    Filed: February 11, 2016
    Publication date: August 17, 2017
    Applicant: Imagination Technologies, Limited
    Inventors: Sujai Chari, Meesaraganda Surendra Raju
  • Publication number: 20160337096
    Abstract: Apparatuses, methods, apparatuses, and systems for selective subcarrier processing are disclosed. One embodiment of a method includes determining whether a signal quality of a received multi-carrier signal is better than a predetermined signal quality, wherein the predetermined signal quality is selected to ensure that a probability of error free decoding of the received signal is greater than a predetermined threshold, and after determining that the signal quality of the received multi-carrier signal is better than the predetermined signal quality, determining which of subcarriers of the multi-carrier signal to perform receive signal processing based on a relative signal quality of each of the subcarriers.
    Type: Application
    Filed: May 17, 2015
    Publication date: November 17, 2016
    Inventors: Sujai Chari, Meesaraganda Surendra Raju
  • Patent number: 9281884
    Abstract: Apparatuses, methods and systems for beamforming are disclosed. One embodiment of a method includes generating a beamforming matrix, including obtaining a channel matrix of a multiple-input, multiple-output (MIMO) between a multiple antenna transmitter and a receiver, determining an initial beamforming matrix based on a singular value decomposition of the channel matrix, generating a final beamforming matrix comprising re-ordering columns of the initial beamforming matrix for at least one sub-carrier of a multi-carrier signal based on a signal characteristic, processing a plurality of multi-carrier signals using the final beamforming matrix, and transmitting the processed plurality of multi-carrier signals through a plurality of transmit chains.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: March 8, 2016
    Assignee: Imagination Technologies, LLC
    Inventors: Meesaraganda Surendra Raju, Sujai Chari
  • Patent number: 9281885
    Abstract: Apparatuses, methods and systems for beamforming based on encoding are disclosed. One embodiment of a method includes generating a beamforming matrix, including obtaining a channel matrix of a multiple-input, multiple-output (MIMO) channel between multiple transmitter antennas and at least one receiver antenna, determining an initial beamforming matrix based on a singular value decomposition of the channel matrix, and generating, by a transceiver, a final beamforming matrix comprising reordering columns of the initial beamforming matrix for at least one sub-carrier of a multi-carrier signal, wherein the reordering of the columns is based on knowledge of encoding of a transmit signal.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: March 8, 2016
    Assignee: Imagination Technologies, LLC
    Inventors: Meesaraganda Surendra Raju, Sujai Chari
  • Publication number: 20150288436
    Abstract: Apparatuses, methods and systems for beamforming are disclosed. One embodiment of a method includes generating a beamforming matrix, including obtaining a channel matrix of a multiple-input, multiple-output (MIMO) between a multiple antenna transmitter and a receiver, determining an initial beamforming matrix based on a singular value decomposition of the channel matrix, generating a final beamforming matrix comprising re-ordering columns of the initial beamforming matrix for at least one sub-carrier of a multi-carrier signal based on a signal characteristic, processing a plurality of multi-carrier signals using the final beamforming matrix, and transmitting the processed plurality of multi-carrier signals through a plurality of transmit chains.
    Type: Application
    Filed: September 3, 2014
    Publication date: October 8, 2015
    Applicant: IMAGINATION TECHNOLOGIES, LIMITED
    Inventors: Meesaraganda Surendra Raju, Sujai Chari
  • Publication number: 20150288437
    Abstract: Apparatuses, methods and systems for beamforming based on encoding are disclosed. One embodiment of a method includes generating a beamforming matrix, including obtaining a channel matrix of a multiple-input, multiple-output (MIMO) channel between multiple transmitter antennas and at least one receiver antenna, determining an initial beamforming matrix based on a singular value decomposition of the channel matrix, and generating, by a transceiver, a final beamforming matrix comprising reordering columns of the initial beamforming matrix for at least one sub-carrier of a multi-carrier signal, wherein the reordering of the columns is based on knowledge of encoding of a transmit signal, wherein the transceiver includes either the multiple transmitter antennas or the at least one receiver antenna.
    Type: Application
    Filed: September 3, 2014
    Publication date: October 8, 2015
    Applicant: Imagination Technologies, Limited
    Inventors: Meesaraganda Surendra Raju, Sujai Chari
  • Patent number: 9088391
    Abstract: Apparatuses, methods and systems for mitigating carrier offset of a received signal are disclosed. One embodiment of a receiver includes a controller operative to determine that a communication signal being received is from a desired transmitter, and to determine a carrier offset correction based on prior reception of communication signals from the desired transmitter, comprising retrieving a carrier offset of the desired transmitter from one or more stored carrier offsets based on previous communication with the desired transmitter and a temperature of the receiver. The receiver further includes a receiver chain operative to receive the communication signal from the desired transmitter, and to generate a carrier offset corrected received signal based on the retrieved carrier offset by applying the carrier offset correction to the received communication signal. The receiver is operative to synchronize to the carrier offset corrected received communication signal.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: July 21, 2015
    Assignee: Imagination Technologies, LLC
    Inventor: Sujai Chari
  • Publication number: 20150103965
    Abstract: Apparatuses, methods and systems for mitigating carrier offset of a received signal are disclosed. One embodiment of a receiver includes a controller operative to determine that a communication signal being received is from a desired transmitter, and to determine a carrier offset correction based on prior reception of communication signals from the desired transmitter, comprising retrieving a carrier offset of the desired transmitter from one or more stored carrier offsets based on previous communication with the desired transmitter and a temperature of the receiver. The receiver further includes a receiver chain operative to receive the communication signal from the desired transmitter, and to generate a carrier offset corrected received signal based on the retrieved carrier offset by applying the carrier offset correction to the received communication signal. The receiver is operative to synchronize to the carrier offset corrected received communication signal.
    Type: Application
    Filed: December 18, 2014
    Publication date: April 16, 2015
    Applicant: Imagination Technologies, Limited
    Inventor: Sujai Chari
  • Patent number: 8942317
    Abstract: Apparatuses, methods and systems for mitigating carrier offset of a received signal are disclosed. One embodiment of a receiver includes a receiver chain operative to receive a communication signal from a desired transmitter, and a controller operative to determine a carrier offset correction based on prior reception of communication signals from the desired transmitter. The receiver chain is operative to generate a carrier offset corrected received signal by applying the carrier offset correction to the received communication signal, and a correlation processor operative to correlate the carrier offset corrected received communication signal with a known sequence.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: January 27, 2015
    Assignee: Imagination Technologies, LLC
    Inventor: Sujai Chari
  • Patent number: 8842791
    Abstract: Apparatuses, methods and systems of synchronizing a receiver to a desired signal are disclosed. One method includes obtaining synchronization information of an interfering signal, and adjusting an out-of-band response of a receiver filter based at least in part on the synchronization information of the interfering signal, wherein the in-band response of the receiver filter is determined by frequency components of the desired signal.
    Type: Grant
    Filed: August 13, 2011
    Date of Patent: September 23, 2014
    Assignee: Posedge Inc.
    Inventor: Sujai Chari
  • Patent number: 8737545
    Abstract: Apparatuses, methods and systems of selecting a gain setting of a receiver chain are disclosed. One method includes bypassing a filter portion of the receiver chain and sampling a bypass receive signal while the filter portion of the receiver chain is bypassed. If the sampled bypass receive signal is determined to be saturated greater than a threshold, then selecting a gain setting of the receive chain as a function of the saturation. Further, the filter portion of the receive chain is included while sampling a receive signal with the selected gain setting.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: May 27, 2014
    Assignee: Posedge Inc.
    Inventors: Sujai Chari, Ssu-Pin Ma
  • Patent number: 8693561
    Abstract: Apparatuses, methods and systems of receive signal detection of a multi-carrier signal are disclosed. One method includes receiving a multi-carrier signal, determining a characteristic of each sub-carrier of the multi-carrier signal, and selecting a one of a plurality of receive signal detection techniques for each sub-carrier of the multi-carrier signal based on the determined characteristic of the sub-carrier.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: April 8, 2014
    Assignee: Posedge Inc.
    Inventors: Meesaraganda Surendra Raju, Mohan Karnam, Sujai Chari
  • Publication number: 20140010326
    Abstract: Apparatuses, methods and systems for mitigating carrier offset of a received signal are disclosed. One embodiment of a receiver includes a receiver chain operative to receive a communication signal from a desired transmitter, and a controller operative to determine a carrier offset correction based on prior reception of communication signals from the desired transmitter. The receiver chain is operative to generate a carrier offset corrected received signal by applying the carrier offset correction to the received communication signal, and a correlation processor operative to correlate the carrier offset corrected received communication signal with a known sequence.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 9, 2014
    Applicant: POSEDGE INC.
    Inventor: Sujai Chari
  • Publication number: 20130243062
    Abstract: Apparatuses, methods and systems of receive signal detection of a multi-carrier signal are disclosed. One method includes receiving a multi-carrier signal, determining a characteristic of each sub-carrier of the multi-carrier signal, and selecting a one of a plurality of receive signal detection techniques for each sub-carrier of the multi-carrier signal based on the determined characteristic of the sub-carrier.
    Type: Application
    Filed: March 16, 2012
    Publication date: September 19, 2013
    Applicant: POSEDGE INC.
    Inventors: Meesaraganda Surendra Raju, Mohan Karnam, Sujai Chari
  • Publication number: 20130156140
    Abstract: Apparatuses, methods and systems of selecting a gain setting of a receiver chain are disclosed. One method includes bypassing a filter portion of the receiver chain and sampling a bypass receive signal while the filter portion of the receiver chain is bypassed. If the sampled bypass receive signal is determined to be saturated greater than a threshold, then selecting a gain setting of the receive chain as a function of the saturation. Further, the filter portion of the receive chain is included while sampling a receive signal with the selected gain setting.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 20, 2013
    Applicant: Posedge Inc.
    Inventors: Sujai Chari, Ssu-Pin Ma
  • Publication number: 20130039404
    Abstract: Apparatuses, methods and systems of synchronizing a receiver to a desired signal are disclosed. One method includes obtaining synchronization information of an interfering signal, and adjusting an out-of-band response of a receiver filter based at least in part on the synchronization information of the interfering signal, wherein the in-band response of the receiver filter is determined by frequency components of the desired signal.
    Type: Application
    Filed: August 13, 2011
    Publication date: February 14, 2013
    Applicant: POSEDGE INC.
    Inventor: Sujai Chari
  • Patent number: 8000376
    Abstract: Methods of adjusting a transmit time of a wireless device are disclosed. One method includes a receiver determining a frequency hopping sequence of an interfering signal. The receiver obtains an observed pattern of at least one of time and frequency overlap between the interfering signal and a signal of interest. The receiver determines a desired pattern of at least one of time and frequency overlap between the interfering signal and the signal of interest. A desired transmit time delay of the signal of interest is adjusted based on a difference between the observed pattern and the desired pattern.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: August 16, 2011
    Assignee: NDSSI Holdings, LLC
    Inventor: Sujai Chari