Patents by Inventor Atul Salvekar
Atul Salvekar 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: 11070088Abstract: An inductive power transmitter and an inductive power receiver include communication circuitry to communicate using modulation of the power transfer field. The inductive power transmitter or the inductive power receiver includes monitoring circuitry to determine a communication fault condition. If a communication fault condition is determined, a converter of the inductive power transmitter or inductive power receiver can adjust a control parameter.Type: GrantFiled: December 7, 2018Date of Patent: July 20, 2021Assignee: Apple Inc.Inventors: Rex Pius Huang, Michael Scott Eckert, Mikhal De Jesus, Arunim Kumar, Atul Salvekar
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Patent number: 11070087Abstract: A wireless power receiving device has a receive coil that receives wireless power signals from a wireless power transmitting device and has a rectifier that produces direct-current power from the received wireless power signals. The receive coil of the wireless power receiving device is coupled to wireless transceiver circuitry. Similarly the transmit coil of the wireless power transmitting device is coupled to wireless transceiver circuitry. The wireless transceiver circuitry in the wireless power receiving device or transmitting may be configured to generate and/or modulate one or more data carrier waves using any desired modulation scheme. The one or more modulated data carrier waves are transmitted between the transmit coil and the receive coil of the corresponding wireless power transmitting and receiving devices. The one or more data carrier waves may have a frequency that is different than the power transmission frequency.Type: GrantFiled: November 19, 2018Date of Patent: July 20, 2021Assignee: Apple Inc.Inventors: Atul A. Salvekar, Jeffrey D. Louis
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Patent number: 10840746Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using a wireless power transmitting coil. The wireless power receiving device may transmit data packets to the wireless power transmitting device. The wireless power transmitting device may include a data receiver that is coupled to the wireless power transmitting coil and that receives the transmitted data packets. The data receiver may be configured to demodulate the received data packets. The data packets may include at least preamble bits, start bits, and data bits encoded as biphase half-bit signals in accordance with a predefined wireless power transfer protocol. During demodulation, the receiver may perform preamble detection, start bit detection, and data bit detection by comparing the input signals to corresponding reference patterns using a maximum likelihood sequence detection scheme. Phase recovery may be employed throughout to help provide immunity to phase change.Type: GrantFiled: November 21, 2018Date of Patent: November 17, 2020Assignee: Apple Inc.Inventors: Bo Zhou, Atul A. Salvekar, Andrew H. Jones, Brian D. Mariner, Michael F. Jean, Moshe H. Malkin, Benjamin M. Oztalay, Arash Mehrabi, Jose Santos Martinez
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Publication number: 20200083747Abstract: An inductive power transmitter and an inductive power receiver include communication circuitry to communicate using modulation of the power transfer field. The inductive power transmitter or the inductive power receiver includes monitoring circuitry to determine a communication fault condition. If a communication fault condition is determined, a converter of the inductive power transmitter or inductive power receiver can adjust a control parameter.Type: ApplicationFiled: December 7, 2018Publication date: March 12, 2020Inventors: Rex Pius Huang, Michael Scott Eckert, Mikhal De Jesus, Arunim Kumar, Atul Salvekar
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Publication number: 20190393734Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using a wireless power transmitting coil. The wireless power receiving device may transmit data packets to the wireless power transmitting device. The wireless power transmitting device may include a data receiver that is coupled to the wireless power transmitting coil and that receives the transmitted data packets. The data receiver may be configured to demodulate the received data packets. The data packets may include at least preamble bits, start bits, and data bits encoded as biphase half-bit signals in accordance with a predefined wireless power transfer protocol. During demodulation, the receiver may perform preamble detection, start bit detection, and data bit detection by comparing the input signals to corresponding reference patterns using a maximum likelihood sequence detection scheme. Phase recovery may be employed throughout to help provide immunity to phase change.Type: ApplicationFiled: November 21, 2018Publication date: December 26, 2019Inventors: Bo Zhou, Atul A. Salvekar, Andrew H. Jones, Brian D. Mariner, Michael F. Jean, Moshe H. Malkin, Benjamin M. Oztalay, Arash Mehrabi, Jose Santos Martinez
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Publication number: 20190238000Abstract: A wireless power receiving device has a receive coil that receives wireless power signals from a wireless power transmitting device and has a rectifier that produces direct-current power from the received wireless power signals. The receive coil of the wireless power receiving device is coupled to wireless transceiver circuitry. Similarly the transmit coil of the wireless power transmitting device is coupled to wireless transceiver circuitry. The wireless transceiver circuitry in the wireless power receiving device or transmitting may be configured to generate and/or modulate one or more data carrier waves using any desired modulation scheme. The one or more modulated data carrier waves are transmitted between the transmit coil and the receive coil of the corresponding wireless power transmitting and receiving devices. The one or more data carrier waves may have a frequency that is different than the power transmission frequency.Type: ApplicationFiled: November 19, 2018Publication date: August 1, 2019Inventors: Atul A. Salvekar, Jeffrey D. Louis
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Patent number: 8989320Abstract: Certain aspects of the present disclosure relate to a method and an apparatus for simplified serial interference cancellation in multiple-input multiple-output (MIMO) and non-MIMO wireless systems by using a single hardware element for multiple interference cancelled streams.Type: GrantFiled: September 2, 2009Date of Patent: March 24, 2015Assignee: QUALCOMM IncorporatedInventors: Atul A. Salvekar, Jia Tang, Jong Hyeon Park, Shantanu Khare
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Patent number: 8976903Abstract: Certain aspects of the present disclosure relate to a method and an apparatus for unified iterative demodulation-decoding that can be employed in both multiple-input multiple-output (MIMO) and non-MIMO wireless systems.Type: GrantFiled: September 2, 2009Date of Patent: March 10, 2015Assignee: QUALCOMM IncorporatedInventors: Parvathanathan Subrahmanya, Andrew Sendonaris, Jia Tang, Atul A. Salvekar, Shantanu Khare, Jong Hyeon Park, Brian C. Banister, Tao Cui
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Patent number: 8890722Abstract: A method for wireless communication is disclosed that includes selecting a plurality of probabilities for a symbol based on a bit-to-symbol mapping; calculating a conditional mean of the symbol based on the plurality of probabilities; and, generating a signal representative of the symbol based on the conditional mean of the symbol. An apparatus for performing the method is also disclosed.Type: GrantFiled: June 11, 2012Date of Patent: November 18, 2014Assignee: QUALCOMM IncorporatedInventors: Atul A. Salvekar, Young Geun Cho, Jia Tang, Shantanu Khare, Ming-Chieh Kuo, Iwen Yao
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Publication number: 20140126443Abstract: The present disclosure presents a method and apparatus for reducing power consumption during a voice communication in a user equipment (UE). For example, the method may include receiving a plurality of frames associated with the voice communication. Further, such an example method may include determining whether a frame pattern based at least on the received plurality of frames corresponds to a transition from a speech burst period to a non-speech period, and disabling a portion of a receiver subsystem at the UE for at least a portion of a frame associated with the non-speech period. As such, the power consumption in a UE may be reduced.Type: ApplicationFiled: April 3, 2013Publication date: May 8, 2014Applicant: QUALCOMM IncorporatedInventors: Nate Chizgi, Atul A. Salvekar, Prashant Udupa Sripathi, Madhup Chandra, Sharif A. Matin
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Patent number: 8634332Abstract: A method for using a joint decoding engine in a wireless device is disclosed. A first symbol stream and a second symbol stream in a received multiple input multiple output (MIMO) signal is determined. A scaled channel estimate for a wireless transmission channel and a scaled noise covariance of the MIMO signal are also determined. The scaled channel estimate and the first symbol stream are whitened. Max log maximum a posteriori (MLM) processing is performed on the whitened first symbol stream to produce a first data stream. The first data stream may be de-rate matched and decoded to produce a decoded first data stream.Type: GrantFiled: April 29, 2010Date of Patent: January 21, 2014Assignee: Qualcomm IncorporatedInventors: Jia Tang, Atul A. Salvekar, Jonathan Sidi, Jong Hyeon Park, Subramanya P. Rao, Abhinav Gupta, Shantanu Khare, Gokhan Mergen
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Patent number: 8526319Abstract: Techniques for determining channel quality indicators (CQIs) for a non-linear detector at a user equipment (UE) are described. In one design, the UE may determine at least one parameter (e.g., at least one threshold) based on at least one constellation constrained capacity function. Each threshold may correspond to a maximum number of information bits for one stream when a particular modulation order is used for another stream. The UE may determine CQIs for multiple streams for the non-linear detector based on the at least one parameter. The UE may also select a precoding matrix (e.g., jointly with the CQIs) based on the at least one parameter. The UE may report the selected precoding matrix and the CQIs for the multiple streams. The UE may thereafter receive a transmission of the multiple streams, which may be transmitted based on the selected precoding matrix and the CQIs.Type: GrantFiled: October 22, 2010Date of Patent: September 3, 2013Assignee: QUALCOMM IncorporatedInventors: Yi Su, Jia Tang, Atul A. Salvekar, Lei Xiao, Gokhan Mergen, Jonathan Sidi
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Patent number: 8514984Abstract: Certain aspects of the present disclosure relate to a method for iterative decoding with re-transmissions of data and to a method for iterative decoding with soft decision directed channel estimation.Type: GrantFiled: September 21, 2009Date of Patent: August 20, 2013Assignee: QUALCOMM IncorporatedInventors: Jia Tang, Atul A. Salvekar, Parvathanathan Subrahmanya, Andrew Sendonaris, Shantanu Khare, Jong Hyeon Park, Brian C. Banister, Tao Cui
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Publication number: 20120249346Abstract: A method for wireless communication is disclosed that includes selecting a plurality of probabilities for a symbol based on a bit-to-symbol mapping; calculating a conditional mean of the symbol based on the plurality of probabilities; and, generating a signal representative of the symbol based on the conditional mean of the symbol. An apparatus for performing the method is also disclosed.Type: ApplicationFiled: June 11, 2012Publication date: October 4, 2012Applicant: QUALCOMM IncorporatedInventors: Atul A. Salvekar, Young Geun Cho, Jia Tang, Shantanu Khare, Ming-Chieh Kuo, Iwen Yao
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Patent number: 8199034Abstract: A method for wireless communication is disclosed that includes selecting a plurality of probabilities for a symbol based on a bit-to-symbol mapping; calculating a conditional mean of the symbol based on the plurality of probabilities; and, generating a signal representative of the symbol based on the conditional mean of the symbol. An apparatus for performing the method is also disclosed.Type: GrantFiled: April 20, 2010Date of Patent: June 12, 2012Assignee: QUALCOMM IncorporatedInventors: Atul A. Salvekar, Young Geun Cho, Jia Tang, Shantanu Khare, Ming-Chieh Kuo, Iwen Yao
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Publication number: 20120099446Abstract: Techniques for determining channel quality indicators (CQIs) for a non-linear detector at a user equipment (UE) are described. In one design, the UE may determine at least one parameter (e.g., at least one threshold) based on at least one constellation constrained capacity function. Each threshold may correspond to a maximum number of information bits for one stream when a particular modulation order is used for another stream. The UE may determine CQIs for multiple streams for the non-linear detector based on the at least one parameter. The UE may also select a precoding matrix (e.g., jointly with the CQIs) based on the at least one parameter. The UE may report the selected precoding matrix and the CQIs for the multiple streams. The UE may thereafter receive a transmission of the multiple streams, which may be transmitted based on the selected precoding matrix and the CQIs.Type: ApplicationFiled: October 22, 2010Publication date: April 26, 2012Applicant: QUALCOMM INCORPORATEDInventors: Yi Su, Jia Tang, Atul A. Salvekar, Lei Xiao, Gokhan Mergen, Jonathan Sidi
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Publication number: 20120045024Abstract: Methods and apparatus for receiving, processing, and decoding MIMO transmissions in communications systems are described. A non-Gaussian approximation method for simplifying processing complexity where summations are used is described. Use of a priori information to facilitate determination of log likelihood ratios (LLRs) in receivers using iterative decoders is further described. A Gaussian or non-Gaussian approximation method using a priori information may be used to determine a K-best list of values for summation to generate an LLR is also described.Type: ApplicationFiled: February 23, 2011Publication date: February 23, 2012Applicant: QUALCOMM IncorporatedInventors: Tao Cui, Jia Tang, Andrew Sendonaris, Atul A. Salvekar, Subramanya P.N. Rao, Parvathanathan Subrahmanya, Lei Xiao, Michael L. McCloud, Brian Clarke Banister
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Publication number: 20110268019Abstract: A method for using a joint decoding engine in a wireless device is disclosed. A first symbol stream and a second symbol stream in a received multiple input multiple output (MIMO) signal is determined. A scaled channel estimate for a wireless transmission channel and a scaled noise covariance of the MIMO signal are also determined. The scaled channel estimate and the first symbol stream are whitened. Max log maximum a posteriori (MLM) processing is performed on the whitened first symbol stream to produce a first data stream. The first data stream may be de-rate matched and decoded to produce a decoded first data stream.Type: ApplicationFiled: April 29, 2010Publication date: November 3, 2011Applicant: QUALCOMM INCORPORATEDInventors: Jia Tang, Atul A. Salvekar, Shantanu Khare, Gokhan Mergen, Jonathan Sidi, Jong Hyeon Park, Subramanya P. Rao, Abhinav Gupta
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Publication number: 20110254714Abstract: A method for wireless communication is disclosed that includes selecting a plurality of probabilities for a symbol based on a bit-to-symbol mapping; calculating a conditional mean of the symbol based on the plurality of probabilities; and, generating a signal representative of the symbol based on the conditional mean of the symbol. An apparatus for performing the method is also disclosed.Type: ApplicationFiled: April 20, 2010Publication date: October 20, 2011Applicant: QUALCOMM IncorporatedInventors: Atul A. Salvekar, Young Geun Cho, Jia Tang, Shantanu Khare, Ming-Chieh Kuo, Iwen Yao
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Publication number: 20110051831Abstract: Certain aspects of the present disclosure relate to a method and an apparatus for unified iterative demodulation-decoding that can be employed in both multiple-input multiple-output (MIMO) and non-MIMO wireless systems.Type: ApplicationFiled: September 2, 2009Publication date: March 3, 2011Applicant: QUALCOMM IncorporatedInventors: Parvathanathan Subrahmanya, Andrew Sendonaris, Jia Tang, Atul A. Salvekar, Shantanu Khare, Jong Hyeon Park, Brian C. Banister, Tao Cui