Patents by Inventor Vishnu Srinivasan

Vishnu Srinivasan 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: 20190212157
    Abstract: A multi-leg transport system receives a transport request and determines a number of transfer locations between the origin location and the destination. The system selects a first provider to transport the user from the origin location to a transfer location and remotely monitors the position of the user as the user travels to the transfer location. In response to determining that the travel time to the transfer location is within a threshold, the system selects a second provider to transport the user from the transfer location to either the next transfer location or the destination for the transport request.
    Type: Application
    Filed: January 9, 2018
    Publication date: July 11, 2019
    Inventors: Bin Wu, Khang Tran, Yuehai Xu, Ruiyan Zhou, Anurag Gupta, Vishnu Srinivasan Sundaresan, Meisam Vosoughpour Yazdchi, Yawen Wei
  • Patent number: 9450552
    Abstract: In an embodiment, a power amplifier (PA) includes a signal processing path including gain stages to receive a radio frequency (RF) signal and to output an amplified RF signal, sensors coupled to the signal processing path each to sense a characteristic of operation of the PA, and a microcontroller configured to execute instructions and to receive the operation characteristic(s) and to control one or more parameters of the signal processing path responsive this operation characteristic.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: September 20, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Timothy Dupuis, Eric Kimball, David Bockelman, Vishnu Srinivasan, Justin Dougherty
  • Patent number: 9065405
    Abstract: In one implementation, a power amplifier may include a gain device to receive an input signal and to output an amplified signal, and a compensation device coupled to the gain device to compensate for a change in a capacitance of the gain device occurring due to a change in the input signal. The power amplifier may be formed using a complementary metal oxide semiconductor (CMOS) process.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: June 23, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: David E. Bockelman, Vishnu Srinivasan
  • Patent number: 8948708
    Abstract: Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: February 3, 2015
    Assignee: Silicon Laboratories Inc.
    Inventors: Donald A. Kerth, Richard T. Behrens, Jeffrey W. Scott, G. Diwakar Vishakhadatta, G. Tyson Tuttle, Vishnu Srinivasan
  • Patent number: 8907727
    Abstract: Embodiments are directed to capacitance compensation via a compensation device coupled to a gain device to compensate for a capacitance change occurring due to an input signal change, along with a controller coupled to the compensation device to receive the input signal and to control an amount of compensation based on the input signal. In some embodiments, banks may be formed of multiple compensation devices, where each of the banks has a different size and is coupled to receive a different set of bias voltages.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: December 9, 2014
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Anil Samavedam, David E. Bockelman, Vishnu Srinivasan, Eric Kimball
  • Publication number: 20140295776
    Abstract: In one implementation, a power amplifier may include a gain device to receive an input signal and to output an amplified signal, and a compensation device coupled to the gain device to compensate for a change in a capacitance of the gain device occurring due to a change in the input signal. The power amplifier may be formed using a complementary metal oxide semiconductor (CMOS) process.
    Type: Application
    Filed: June 11, 2014
    Publication date: October 2, 2014
    Inventors: David E. Bockelman, Vishnu Srinivasan
  • Patent number: 8843080
    Abstract: Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: September 23, 2014
    Assignee: Silicon Laboratories Inc.
    Inventors: Donald Kerth, Richard Behrens, Jeffrey Scott, G. Diwakar Vishakhadatta, G. Tyson Tuttle, Vishnu Srinivasan
  • Publication number: 20140256279
    Abstract: Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.
    Type: Application
    Filed: May 21, 2014
    Publication date: September 11, 2014
    Applicant: Silicon Laboratories Inc.
    Inventors: Donald A. Kerth, Richard T. Behrens, Jeffrey W. Scott, G. Diwakar Vishakhadatta, G. Tyson Tuttle, Vishnu Srinivasan
  • Patent number: 8787850
    Abstract: In one implementation, a power amplifier may include a gain device to receive an input signal and to output an amplified signal, and a compensation device coupled to the gain device to compensate for a change in a capacitance of the gain device occurring due to a change in the input signal. The power amplifier may be formed using a complementary metal oxide semiconductor (CMOS) process.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: July 22, 2014
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: David E. Bockelman, Vishnu Srinivasan
  • Publication number: 20140100002
    Abstract: In an embodiment, a power amplifier (PA) includes a signal processing path including gain stages to receive a radio frequency (RF) signal and to output an amplified RF signal, sensors coupled to the signal processing path each to sense a characteristic of operation of the PA, and a microcontroller configured to execute instructions and to receive the operation characteristic(s) and to control one or more parameters of the signal processing path responsive this operation characteristic.
    Type: Application
    Filed: October 9, 2012
    Publication date: April 10, 2014
    Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Timothy Dupuis, Eric Kimball, David Bockelman, Vishnu Srinivasan, Justin Dougherty
  • Publication number: 20130154744
    Abstract: Embodiments are directed to capacitance compensation via a compensation device coupled to a gain device to compensate for a capacitance change occurring due to an input signal change, along with a controller coupled to the compensation device to receive the input signal and to control an amount of compensation based on the input signal. In some embodiments, banks may be formed of multiple compensation devices, where each of the banks has a different size and is coupled to receive a different set of bias voltages.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 20, 2013
    Inventors: Anil Samavedam, David E. Bockelman, Vishnu Srinivasan, Eric Kimball
  • Patent number: 8344808
    Abstract: Embodiments are directed to capacitance compensation via a compensation device coupled to a gain device to compensate for a capacitance change occurring due to an input signal change, along with a controller coupled to the compensation device to receive the input signal and to control an amount of compensation based on the input signal. In some embodiments, banks may be formed of multiple compensation devices, where each of the banks has a different size and is coupled to receive a different set of bias voltages.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: January 1, 2013
    Assignee: Javelin Semiconductor, Inc.
    Inventors: Anil Samavedam, David E. Bockelman, Vishnu Srinivasan, Eric Kimball
  • Patent number: 8219049
    Abstract: In one embodiment, a method includes generating a current that is proportional to a mobility and an oxide capacitance of a tracking device and independent of a threshold voltage variation of the tracking device, generating a voltage from the current, and providing the voltage as at least part of a bias voltage for another device. In one embodiment, this other device may be a compensation circuit coupled to a main device to compensate for capacitance non-linearity of the main device.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: July 10, 2012
    Assignee: Javelin Semiconductor, Inc.
    Inventors: Anil Samavedam, David E. Bockelman, Vishnu Srinivasan
  • Patent number: 8160520
    Abstract: In one embodiment, the present invention includes an apparatus having at least two gain stages to receive incoming signals and to output amplified signals, along with multiple regulators. More specifically, a linear regulator can be coupled to the first gain stage to provide a first regulated voltage to the first gain stage, and a switching regulator coupled to the second gain stage to provide a second regulated voltage to the second gain stage.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: April 17, 2012
    Assignee: Javelin Semiconductor, Inc.
    Inventors: Vishnu Srinivasan, David E. Bockelman
  • Publication number: 20110074509
    Abstract: Embodiments are directed to capacitance compensation via a compensation device coupled to a gain device to compensate for a capacitance change occurring due to an input signal change, along with a controller coupled to the compensation device to receive the input signal and to control an amount of compensation based on the input signal. In some embodiments, banks may be formed of multiple compensation devices, where each of the banks has a different size and is coupled to receive a different set of bias voltages.
    Type: Application
    Filed: September 24, 2010
    Publication date: March 31, 2011
    Inventors: ANIL SAMAVEDAM, David E. Bockelman, Vishnu Srinivasan, Eric Kimball
  • Patent number: 7872528
    Abstract: In one implementation, the present invention includes a diode device to receive an incoming radio frequency (RF) signal to be amplified in a gain device of an amplifier and to provide a pre-distorted signal. Based on this pre-distorted signal, the gain device can output an amplified RF signal having substantial linearity to the incoming RF signal.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: January 18, 2011
    Assignee: Javelin Semiconductor, Inc.
    Inventors: David E. Bockelman, Vishnu Srinivasan
  • Patent number: 7768350
    Abstract: In one embodiment, the present invention includes multiple gain stages to receive and amplify a differential input signal at different common mode voltages. The stages each may include a pair of linear NMOS gain transistors coupled to a primary coil of a given output transformer. One of the stages may include commonly coupled terminals coupled to a center tap of the primary coil of an output transformer of another stage, and a supply current provided to one of the stages is re-used for the other stage(s).
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: August 3, 2010
    Assignee: Javelin Semiconductor, Inc.
    Inventors: Vishnu Srinivasan, David E. Bockelman
  • Publication number: 20100164621
    Abstract: In one embodiment, the present invention includes multiple gain stages to receive and amplify a differential input signal at different common mode voltages. The stages each may include a pair of linear NMOS gain transistors coupled to a primary coil of a given output transformer. One of the stages may include commonly coupled terminals coupled to a center tap of the primary coil of an output transformer of another stage, and a supply current provided to one of the stages is re-used for the other stage(s).
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Inventors: Vishnu Srinivasan, David E. Bockelman
  • Patent number: 7728661
    Abstract: In one embodiment, the present invention includes multiple gain stages and an output network coupled to the gain stages. Each of the gain stages can be independently controlled to amplify a radio frequency (RF) signal to an output power level for transmission from a mobile wireless device. When controlled to be inactive, at least one of the gain stages can be placed into a low impedance state.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: June 1, 2010
    Assignee: Javelin Semiconductor, Inc.
    Inventors: David E. Bockelman, Vishnu Srinivasan
  • Publication number: 20100085119
    Abstract: In one embodiment, a method includes generating a current that is proportional to a mobility and an oxide capacitance of a tracking device and independent of a threshold voltage variation of the tracking device, generating a voltage from the current, and providing the voltage as at least part of a bias voltage for another device. In one embodiment, this other device may be a compensation circuit coupled to a main device to compensate for capacitance non-linearity of the main device.
    Type: Application
    Filed: October 14, 2009
    Publication date: April 8, 2010
    Inventors: Anil Samavedam, David E. Bockelman, Vishnu Srinivasan