Patents by Inventor Harshad Shah

Harshad Shah 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: 20250004522
    Abstract: A circuit includes a bandgap circuit configured to generate multiple reference voltages. A first voltage glitching detection circuit utilizes a first one of the reference voltages and a first power rail to generate a first reset signal in response to a voltage glitching attack on the first power rail, and a second voltage glitching detection circuit operates independently of the reference voltages to generate a second reset signal in response to the voltage glitching attack on the first power rail.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 2, 2025
    Applicant: NVIDIA Corp.
    Inventors: Jiale Liang, Prashant Singh, Nishit Harshad Shah, Daniel Nguyen, Kaushik Krishna Raghuraman, Suhas Satheesh, Ting Lu, Roman Surgutchik, Tezaswi Raja
  • Publication number: 20240353471
    Abstract: Circuitry and a method of determining electrical characteristics of material local to a specific area of a semiconductor wafer is disclosed. In one embodiment, an IC is disclosed that comprises at least one processing subsystem and at least one integrated common current monitor (ICCM) located within the processing subsystem(s). In one embodiment, the ICCM includes current-to-voltage conversion circuitry that converts a current throughput (IDUT) of a selected at least one of the plurality of DUTs to a corresponding voltage for a plurality of regulated drain-to-source voltages (VDS) across the selected DUT(s). In one embodiment, the ICCM is configured to determine a duty cycle of a voltage that corresponds to the IDUT and IDUT represents electrical characteristics of material local to an area of a semiconductor wafer specific to a location where the ICCM is located.
    Type: Application
    Filed: April 20, 2023
    Publication date: October 24, 2024
    Inventors: Miguel Rodriguez, Suhas Satheesh, Tezaswi Raja, Nishit Harshad Shah
  • Publication number: 20240353475
    Abstract: Circuitry and a method of determining electrical characteristics of material local to a specific area of a semiconductor wafer is disclosed. In one embodiment, the method includes sinking or sourcing current through a selected on of a plurality of devices under test (DUTs) on the semiconductor wafer, converting the current sourcing or sinking into a voltage, comparing the converted voltage against a linear voltage ramp, generating an output clock based on the comparison, and measuring a duty cycle of the output clock. In one embodiment, the duty cycle of the output clock is dependent on the current sinking or sourcing through the selected at least one of the plurality of DUTs on the wafer and electrical characteristics of material local to the specific area of the wafer where the selected one of the plurality of DUTs is located are determined based on the duty cycle of the output clock.
    Type: Application
    Filed: April 20, 2023
    Publication date: October 24, 2024
    Inventors: Miguel Rodriguez, Suhas Satheesh, Tezaswi Raja, Nishit Harshad Shah
  • Patent number: 11777483
    Abstract: In various embodiments, a comparison circuit compares voltages within an integrated circuit. The comparison circuit includes a comparison capacitor, an inverter, and multiple switches. A first terminal of the comparison capacitor is coupled to both a first terminal of a first switch and a first terminal of a second switch. A second terminal of the comparison capacitor is coupled to both a first terminal of a third switch and an input of the inverter. An output of the inverter is coupled to both a second terminal of the third switch and a first terminal of a fourth switch. A second terminal of the fourth switch is coupled to a first terminal of a fifth switch and a first output of the comparison circuit. At least a portion of the switches are turned on during a comparison model and are turned off during a reset mode.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: October 3, 2023
    Assignee: NVIDIA Corporation
    Inventors: Nishit Harshad Shah, Ting Ku, Krishnamraju Kurra, Gunaseelan Ponnuvel, Tezaswi Raja, Suhas Satheesh
  • Publication number: 20230299760
    Abstract: In various embodiments, a comparison circuit compares voltages within an integrated circuit. The comparison circuit includes a comparison capacitor, an inverter, and multiple switches. A first terminal of the comparison capacitor is coupled to both a first terminal of a first switch and a first terminal of a second switch. A second terminal of the comparison capacitor is coupled to both a first terminal of a third switch and an input of the inverter. An output of the inverter is coupled to both a second terminal of the third switch and a first terminal of a fourth switch. A second terminal of the fourth switch is coupled to a first terminal of a fifth switch and a first output of the comparison circuit. At least a portion of the switches are turned on during a comparison model and are turned off during a reset mode.
    Type: Application
    Filed: March 18, 2022
    Publication date: September 21, 2023
    Inventors: Nishit Harshad SHAH, Ting KU, Krishnamraju KURRA, Gunaseelan PONNUVEL, Tezaswi RAJA, Suhas SATHEESH
  • Patent number: 11619661
    Abstract: In various embodiments, a current measurement circuit measures an input current within an integrated circuit. The current measurement circuit includes an integration capacitor, an operational amplifier, a comparison capacitor, an inverter, and multiple switches. The current measurement circuit is coupled to a clocking circuit that, during operation, generates a two-phase clock having a frequency that is proportional to the input current. At least a portion of the switches are turned on during a first phase of the two-phase clock and are turned off during a second phase of the two-phase clock.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: April 4, 2023
    Assignee: NVIDIA Corporation
    Inventors: Nishit Harshad Shah, Ting Ku, Krishnamraju Kurra, Gunaseelan Ponnuvel, Tezaswi Raja, Suhas Satheesh
  • Publication number: 20210342915
    Abstract: A first variant of a listing and a second variant of the listing are received. The listing describes an item for sale in an electronic marketplace. The first variant describes a different iteration of the item relative to the second variant. First user activity data of the first variant is generated and second user activity data of the second variant is generated. The first user activity data corresponds to user input metrics associated with the first variant. The second user activity data corresponds to user input metrics associated with the second variant. A search engine receives a first query. Based at least in part on the first user activity data relative to the second user activity data, a first search result associated with the first variant is ranked higher than a second search result associated with the second variant.
    Type: Application
    Filed: May 1, 2020
    Publication date: November 4, 2021
    Inventors: Gurudatta Horantur Shivaswamy, Linyin Wu, Manish Harshad Shah, Atcharavan Vajarapong, Xiaoyuan Wu, Jingying Wang, Maoquan Wang, Yuyangzi Fu
  • Patent number: 8525720
    Abstract: A successive approximation analog to digital converter (SA-ADC) employs a binary-weighted digital to analog converter (DAC) to perform a non-binary search in determining a digital representation of a sample of an analog signal. In an embodiment, a subset of iterations needed to convert an analog sample to a digital value is performed using non-binary search with a radix of conversion less than two. As a result, search windows in iterations corresponding to the non-binary search overlap, and correction of errors due to a comparator used in the SA-ADC is rendered possible. Error correction being possible due to the non-binary search, the comparator is operated in a low-bandwidth, and hence low-power, mode during the non-binary search. The non-binary search in combination with the binary-weighted architecture of the DAC offer several benefits such as for example, less-complex implementation, shorter conversion time, easier and compact layout and lower power consumption.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: September 3, 2013
    Assignee: Texas Instruments Incorporated
    Inventor: Nishit Harshad Shah
  • Publication number: 20130021181
    Abstract: A successive approximation analog to digital converter (SA-ADC) employs a binary-weighted digital to analog converter (DAC) to perform a non-binary search in determining a digital representation of a sample of an analog signal. In an embodiment, a subset of iterations needed to convert an analog sample to a digital value is performed using non-binary search with a radix of conversion less than two. As a result, search windows in iterations corresponding to the non-binary search overlap, and correction of errors due to a comparator used in the SA-ADC is rendered possible. Error correction being possible due to the non-binary search, the comparator is operated in a low-bandwidth, and hence low-power, mode during the non-binary search. The non-binary search in combination with the binary-weighted architecture of the DAC offer several benefits such as for example, less-complex implementation, shorter conversion time, easier and compact layout and lower power consumption.
    Type: Application
    Filed: July 22, 2011
    Publication date: January 24, 2013
    Applicant: TEXAS INSTUMENTS INCORPORATED
    Inventor: Nishit Harshad Shah
  • Publication number: 20070042191
    Abstract: A method for enhancing the toughness, e.g., resistance to cracking upon flexing, of coatings made from cycloaliphatic epoxy resins wherein the cycloaliphatic epoxy resin is a cycloaliphatic epoxide ester of a hydroxy-functional compound containing at least one cycloaliphatic ring.
    Type: Application
    Filed: September 10, 2004
    Publication date: February 22, 2007
    Inventors: James Carter, Jessica Cook, Keith Lamb, Harshad Shah
  • Publication number: 20060045230
    Abstract: An arrangement is provided for mitigating pressure loss in a steam tunnel of a boiling water reactor. To reduce pressure loss in the steam tunnel, a diverter element is operatively connected to at least one of a plurality of pipe supports in a first direction opposed to a flow of steam in the steam tunnel so as to divide the steam flow over the at least one of the plurality of pipe supports. Further, a combiner element is operatively connected to at least one of the plurality of pipe supports in a second direction in a same direction as the flow of steam in the steam tunnel so as to combine the divided steam flow over the at least one of the plurality of pipe supports into a continuous steam flow. This division and recombination of steam flow may reduce form losses caused by the at least one of the plurality of pipe supports in the steam tunnel, which may in turn mitigate pressure loss in the steam tunnel of the boiling water reactor.
    Type: Application
    Filed: August 31, 2004
    Publication date: March 2, 2006
    Inventors: Stephan Moen, Ramesh Patel, Harshad Shah
  • Patent number: D449369
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: October 16, 2001
    Assignee: Illinois Tool Works Inc.
    Inventors: Daniel J. Hanzel, Harshad Shah, Robert L. Warning