Patents by Inventor Mangal Prasad

Mangal Prasad 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: 20170040974
    Abstract: Embodiments relate to peaking inductor array for a peaking control unit of a transceiver. An aspect includes the peaking inductor array comprising a plurality of cells connected in parallel, each cell comprising a respective active inductor. Another aspect includes each of the plurality of cells further comprising a decoupling capacitor.
    Type: Application
    Filed: August 3, 2015
    Publication date: February 9, 2017
    Inventors: Pier Andrea Francese, Mangal Prasad, Hung H. Tran, Xiaobin Yuan
  • Publication number: 20170040975
    Abstract: Embodiments relate to peaking inductor array for a peaking control unit of a transceiver. An aspect includes the peaking inductor array comprising a plurality of cells connected in parallel, each cell comprising a respective active inductor. Another aspect includes each of the plurality of cells further comprising a decoupling capacitor.
    Type: Application
    Filed: September 8, 2016
    Publication date: February 9, 2017
    Inventors: Pier A. Francese, Mangal Prasad, Hung H. Tran, Xiaobin Yuan
  • Patent number: 9543936
    Abstract: A circuit for controlling a clock signal may include a voltage source that provides a bias voltage, and at least one delay element having a non-linear capacitive load coupled to an output of the delay element. The non-linear capacitive load receives the bias from the voltage source and controls a delay magnitude applied to a plurality of pulses of the clock signal by the delay element. Based on the bias having a first scaled voltage, the delay magnitude that is applied to the plurality of clock pulses is increased in order to generate a frequency correction to the operating frequency of a microprocessor based on a variation to a microprocessor supply voltage. Based on the bias having a second scaled voltage, the delay magnitude that is applied to the clock pulses is maintained to retain the operating frequency of the clock during the variation to the supply voltage.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: January 10, 2017
    Assignee: International Business Machines Corporation
    Inventors: Mangal Prasad, Marshall D. Tiner, Xiaobin Yuan
  • Publication number: 20160373097
    Abstract: A circuit for controlling a clock signal may include a voltage source that provides a bias voltage, and at least one delay element having a non-linear capacitive load coupled to an output of the delay element. The non-linear capacitive load receives the bias from the voltage source and controls a delay magnitude applied to a plurality of pulses of the clock signal by the delay element. Based on the bias having a first scaled voltage, the delay magnitude that is applied to the plurality of clock pulses is increased in order to generate a frequency correction to the operating frequency of a microprocessor based on a variation to a microprocessor supply voltage. Based on the bias having a second scaled voltage, the delay magnitude that is applied to the clock pulses is maintained to retain the operating frequency of the clock during the variation to the supply voltage.
    Type: Application
    Filed: September 11, 2015
    Publication date: December 22, 2016
    Inventors: MANGAL PRASAD, MARSHALL D. TINER, XIAOBIN YUAN
  • Publication number: 20160373100
    Abstract: A circuit includes a first node, a first inverter connected to the first node and a second node. A variable resistive element is connected to the second node and a third node. A first switch is connected to the second node, a first capacitive element is connected in series with the first switch and the third node, a second switch connected to the second node, a second capacitive element is connected in series with the second switch and the third node, and a second inverter is connected to the third node and a fourth node.
    Type: Application
    Filed: September 3, 2015
    Publication date: December 22, 2016
    Inventors: Mangal Prasad, Marshall D. Tiner, Hung H. Tran, Xiaobin Yuan
  • Publication number: 20160373099
    Abstract: A circuit includes a first node, a first inverter connected to the first node and a second node. A variable resistive element is connected to the second node and a third node. A first switch is connected to the second node, a first capacitive element is connected in series with the first switch and the third node, a second switch connected to the second node, a second capacitive element is connected in series with the second switch and the third node, and a second inverter is connected to the third node and a fourth node.
    Type: Application
    Filed: June 18, 2015
    Publication date: December 22, 2016
    Inventors: Mangal Prasad, Marshall D. Tiner, Hung H. Tran, Xiaobin Yuan
  • Publication number: 20160373098
    Abstract: A circuit for controlling a clock signal may include a voltage source that provides a bias voltage, and at least one delay element having a non-linear capacitive load coupled to an output of the delay element. The non-linear capacitive load receives the bias from the voltage source and controls a delay magnitude applied to a plurality of pulses of the clock signal by the delay element. Based on the bias having a first scaled voltage, the delay magnitude that is applied to the plurality of clock pulses is increased in order to generate a frequency correction to the operating frequency of a microprocessor based on a variation to a microprocessor supply voltage. Based on the bias having a second scaled voltage, the delay magnitude that is applied to the clock pulses is maintained to retain the operating frequency of the clock during the variation to the supply voltage.
    Type: Application
    Filed: June 22, 2015
    Publication date: December 22, 2016
    Inventors: MANGAL PRASAD, MARSHALL D. TINER, XIAOBIN YUAN
  • Patent number: 9509281
    Abstract: Embodiments relate to peaking inductor array for a peaking control unit of a transceiver. An aspect includes the peaking inductor array comprising a plurality of cells connected in parallel, each cell comprising a respective active inductor. Another aspect includes each of the plurality of cells further comprising a decoupling capacitor.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: November 29, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Pier A. Francese, Mangal Prasad, Hung H. Tran, Xiaobin Yuan
  • Patent number: 8237513
    Abstract: A voltage controlled oscillator (VCO) for a phase locked loop (PLL) includes a startup oscillator, the startup oscillator comprising a first plurality of inverters; a primary oscillator, the primary oscillator comprising a second plurality of inverters, wherein a number of the second plurality of inverters is fewer than the number of the first plurality of inverters; and a control module connected to the startup oscillator and the primary oscillator. A method of operating a voltage controlled oscillator (VCO) in a phase locked loop (PLL), the VCO comprising a startup oscillator and a primary oscillator includes sending an enable signal to the startup oscillator; waiting a predetermined number of startup oscillator clock cycles; and when the predetermined number of startup oscillator clock cycles has elapsed, sending a disable signal to the startup oscillator, and sending an enable signal to the primary oscillator.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: August 7, 2012
    Assignee: International Business Machines Corporation
    Inventors: Paul D. Muench, Mangal Prasad, George E. Smith, III, Michael A. Sperling
  • Publication number: 20110316593
    Abstract: A voltage controlled oscillator (VCO) for a phase locked loop (PLL) includes a startup oscillator, the startup oscillator comprising a first plurality of inverters; a primary oscillator, the primary oscillator comprising a second plurality of inverters, wherein a number of the second plurality of inverters is fewer than the number of the first plurality of inverters; and a control module connected to the startup oscillator and the primary oscillator. A method of operating a voltage controlled oscillator (VCO) in a phase locked loop (PLL), the VCO comprising a startup oscillator and a primary oscillator includes sending an enable signal to the startup oscillator; waiting a predetermined number of startup oscillator clock cycles; and when the predetermined number of startup oscillator clock cycles has elapsed, sending a disable signal to the startup oscillator, and sending an enable signal to the primary oscillator.
    Type: Application
    Filed: June 23, 2010
    Publication date: December 29, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Paul D. Muench, Mangal Prasad, George E. Smith, III, Michael A. Sperling
  • Patent number: 6150367
    Abstract: A chemical compound and composition of Formula 1: ##STR1## wherein Ar represents a phenyl ring substituted by the groups like halo, alkoxy, alkyl or heteroaryl, n=1 or n=2; said compounds and compositions as being useful therapeutic agents for hypertension, ischemic, cardiovascular and other adrenergic receptor related disorders.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: November 21, 2000
    Assignee: Council of Scientific & Industrial Research
    Inventors: Neelima Sinha, Sanjay Jain, Anil Kumar Saxena, Nitya Anand, Ram Mohan Saxena, Mangal Prasad Dubey, Madhur Ray, Gyanendra K. Patnaik, deceased
  • Patent number: 6084097
    Abstract: The invention relates to a process for the synthesis of 1-[4-Arylpiperazin-1-yl]-3-[2-oxopyrrolidin/piperidin-1-yl]propanes used as potential therapeutic agents for hypertension, ischemia, cardiovascular and other adrenergic receptors related disorders, having general formula 1 ##STR1## wherein Ar represents a phenyl ring substituted by the groups like halo, alkoxy, alkyl or heteroaryl, n=1 or n=2; a process of preparing said compounds and a method of treating hypertension, ischemia, cardiovascular and other adrenergic receptors related disorders.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: July 4, 2000
    Assignee: Council of Scientific & Industrial Research
    Inventors: Neelima Sinha, Sanjay Jain, Anil Kumar Saxena, Nitya Anand, Ram Mohan Saxena, Mangal Prasad Dubey, Madhur Ray, Gyanendra Kumar Patnaik, deceased