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).
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Publication number: 20240120027Abstract: 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: ApplicationFiled: September 27, 2023Publication date: April 11, 2024Inventors: Sujai Chari, Gavin Derek Parnaby, Naoki Nariai
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Patent number: 9848384Abstract: 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: GrantFiled: February 11, 2016Date of Patent: December 19, 2017Assignee: Imagination TechnologiesInventors: Sujai Chari, Meesaraganda Surendra Raju
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Patent number: 9806871Abstract: 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: GrantFiled: May 17, 2015Date of Patent: October 31, 2017Assignee: Imagination TechnologiesInventors: Sujai Chari, Meesaraganda Surendra Raju
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Publication number: 20170238255Abstract: 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: ApplicationFiled: February 11, 2016Publication date: August 17, 2017Applicant: Imagination Technologies, LimitedInventors: Sujai Chari, Meesaraganda Surendra Raju
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Publication number: 20160337096Abstract: 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: ApplicationFiled: May 17, 2015Publication date: November 17, 2016Inventors: Sujai Chari, Meesaraganda Surendra Raju
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Patent number: 9281884Abstract: 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: GrantFiled: September 3, 2014Date of Patent: March 8, 2016Assignee: Imagination Technologies, LLCInventors: Meesaraganda Surendra Raju, Sujai Chari
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Patent number: 9281885Abstract: 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: GrantFiled: September 3, 2014Date of Patent: March 8, 2016Assignee: Imagination Technologies, LLCInventors: Meesaraganda Surendra Raju, Sujai Chari
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Publication number: 20150288436Abstract: 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: ApplicationFiled: September 3, 2014Publication date: October 8, 2015Applicant: IMAGINATION TECHNOLOGIES, LIMITEDInventors: Meesaraganda Surendra Raju, Sujai Chari
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Publication number: 20150288437Abstract: 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: ApplicationFiled: September 3, 2014Publication date: October 8, 2015Applicant: Imagination Technologies, LimitedInventors: Meesaraganda Surendra Raju, Sujai Chari
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Patent number: 9088391Abstract: 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: GrantFiled: December 18, 2014Date of Patent: July 21, 2015Assignee: Imagination Technologies, LLCInventor: Sujai Chari
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Publication number: 20150103965Abstract: 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: ApplicationFiled: December 18, 2014Publication date: April 16, 2015Applicant: Imagination Technologies, LimitedInventor: Sujai Chari
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Patent number: 8942317Abstract: 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: GrantFiled: July 6, 2012Date of Patent: January 27, 2015Assignee: Imagination Technologies, LLCInventor: Sujai Chari
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Patent number: 8842791Abstract: 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: GrantFiled: August 13, 2011Date of Patent: September 23, 2014Assignee: Posedge Inc.Inventor: Sujai Chari
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Patent number: 8737545Abstract: 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: GrantFiled: December 14, 2011Date of Patent: May 27, 2014Assignee: Posedge Inc.Inventors: Sujai Chari, Ssu-Pin Ma
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Patent number: 8693561Abstract: 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: GrantFiled: March 16, 2012Date of Patent: April 8, 2014Assignee: Posedge Inc.Inventors: Meesaraganda Surendra Raju, Mohan Karnam, Sujai Chari
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Publication number: 20140010326Abstract: 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: ApplicationFiled: July 6, 2012Publication date: January 9, 2014Applicant: POSEDGE INC.Inventor: Sujai Chari
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Publication number: 20130243062Abstract: 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: ApplicationFiled: March 16, 2012Publication date: September 19, 2013Applicant: POSEDGE INC.Inventors: Meesaraganda Surendra Raju, Mohan Karnam, Sujai Chari
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Publication number: 20130156140Abstract: 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: ApplicationFiled: December 14, 2011Publication date: June 20, 2013Applicant: Posedge Inc.Inventors: Sujai Chari, Ssu-Pin Ma
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Publication number: 20130039404Abstract: 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: ApplicationFiled: August 13, 2011Publication date: February 14, 2013Applicant: POSEDGE INC.Inventor: Sujai Chari
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Patent number: 8000376Abstract: 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: GrantFiled: January 22, 2008Date of Patent: August 16, 2011Assignee: NDSSI Holdings, LLCInventor: Sujai Chari