Patents by Inventor Prabu Sankar Thirugnanam

Prabu Sankar Thirugnanam 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).

  • Receiver and time-of-flight system with high dynamic range having a coupling capacitor respectively connected to a photodiode and a sigma delta analog to digital converter
    Patent number: 11233525
    Abstract: The disclosure provides a receiver with high dynamic range. The receiver includes a photodiode that generates a current signal. A coupling capacitor is coupled to the photodiode, and generates a modulation signal in response to the current signal received from the photodiode. A sigma delta analog to digital converter (ADC) is coupled to the coupling capacitor, and generates a digital data in response to the modulation signal. A digital mixer is coupled to the sigma delta ADC, and generates an in-phase component and a quadrature component corresponding to the digital data. A processor is coupled to the digital mixer, and processes the in-phase component and the quadrature component corresponding to the digital data.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: January 25, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jagannathan Venkataraman, Prabu Sankar Thirugnanam, Raja Reddy Patukuri, Sandeep Kesrimal Oswal
  • Time-of-Flight (TOF) Receiver with High Dynamic Range
    Publication number: 20200162097
    Abstract: The disclosure provides a receiver with high dynamic range. The receiver includes a photodiode that generates a current signal. A coupling capacitor is coupled to the photodiode, and generates a modulation signal in response to the current signal received from the photodiode. A sigma delta analog to digital converter (ADC) is coupled to the coupling capacitor, and generates a digital data in response to the modulation signal. A digital mixer is coupled to the sigma delta ADC, and generates an in-phase component and a quadrature component corresponding to the digital data. A processor is coupled to the digital mixer, and processes the in-phase component and the quadrature component corresponding to the digital data.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Inventors: Jagannathan Venkataraman, Prabu Sankar Thirugnanam, Raja Reddy Patukuri, Sandeep Kesrimal Oswal
  • Time-of-flight (TOF) receiver with high dynamic range comprising a digital mixer coupled to a sigma delta analog to digital converter
    Patent number: 10581451
    Abstract: The disclosure provides a receiver with high dynamic range. The receiver includes a photodiode that generates a current signal. A coupling capacitor is coupled to the photodiode, and generates a modulation signal in response to the current signal received from the photodiode. A sigma delta analog to digital converter (ADC) is coupled to the coupling capacitor, and generates a digital data in response to the modulation signal. A digital mixer is coupled to the sigma delta ADC, and generates an in-phase component and a quadrature component corresponding to the digital data. A processor is coupled to the digital mixer, and processes the in-phase component and the quadrature component corresponding to the digital data.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: March 3, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jagannathan Venkataraman, Prabu Sankar Thirugnanam, Raja Reddy Patukuri, Sandeep Kesrimal Oswal
  • ADC design for differential and common mode signals
    Patent number: 10078134
    Abstract: The disclosure provides a circuit. The circuit includes a first analog to digital converter (ADC) that generates a coarse output in response to a first input and a second input. The first ADC generates the coarse output in a differential phase. A pipeline ADC generates a differential signal in response to the coarse output, the first input and the second input. The pipeline ADC generates the differential signal in a common-mode phase. The first ADC generates a common mode signal in the common-mode phase.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: September 18, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Raja Reddy Patukuri, Jagannathan Venkataraman, Prabu Sankar Thirugnanam
  • Time-of-Flight (TOF) Receiver with High Dynamic Range
    Publication number: 20180234107
    Abstract: The disclosure provides a receiver with high dynamic range. The receiver includes a photodiode that generates a current signal. A coupling capacitor is coupled to the photodiode, and generates a modulation signal in response to the current signal received from the photodiode. A sigma delta analog to digital converter (ADC) is coupled to the coupling capacitor, and generates a digital data in response to the modulation signal. A digital mixer is coupled to the sigma delta ADC, and generates an in-phase component and a quadrature component corresponding to the digital data. A processor is coupled to the digital mixer, and processes the in-phase component and the quadrature component corresponding to the digital data.
    Type: Application
    Filed: April 11, 2018
    Publication date: August 16, 2018
    Inventors: Jagannathan Venkataraman, Prabu Sankar Thirugnanam, Raja Reddy Patukuri, Sandeep Kesrimal Oswal
  • ADC DESIGN FOR DIFFERENTIAL AND COMMON MODE SIGNALS
    Publication number: 20160329906
    Abstract: The disclosure provides a circuit. The circuit includes a first analog to digital converter (ADC) that generates a coarse output in response to a first input and a second input. The first ADC generates the coarse output in a differential phase. A pipeline ADC generates a differential signal in response to the coarse output, the first input and the second input. The pipeline ADC generates the differential signal in a common-mode phase. The first ADC generates a common mode signal in the common-mode phase.
    Type: Application
    Filed: September 11, 2015
    Publication date: November 10, 2016
    Inventors: Raja Reddy PATUKURI, Jagannathan Venkataraman, Prabu Sankar Thirugnanam
  • TIME-OF-FLIGHT (TOF) RECEIVER WITH HIGH DYNAMIC RANGE
    Publication number: 20150260571
    Abstract: The disclosure provides a receiver with high dynamic range. The receiver includes a photodiode that generates a current signal. A coupling capacitor is coupled to the photodiode, and generates a modulation signal in response to the current signal received from the photodiode. A sigma delta analog to digital converter (ADC) is coupled to the coupling capacitor, and generates a digital data in response to the modulation signal. A digital mixer is coupled to the sigma delta ADC, and generates an in-phase component and a quadrature component corresponding to the digital data. A processor is coupled to the digital mixer, and processes the in-phase component and the quadrature component corresponding to the digital data.
    Type: Application
    Filed: March 11, 2015
    Publication date: September 17, 2015
    Inventors: Jagannathan Venkataraman, Prabu Sankar Thirugnanam, Raja Reddy Patukuri, Sandeep Kesrimal Oswal