Patents by Inventor Shiv Mathur

Shiv Mathur 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).

  • Patent number: 11424716
    Abstract: Storage devices are capable of utilizing receiver devices with native devices configured to support lower voltage supplies for higher read performances. The receiver device may include a current source circuit, first and second stage circuits, and a duty cycle balancer circuit. The first stage circuit may utilize first and second native devices with a threshold voltage (VTH) that enables proper lower voltage operations in saturation at high speeds. The current source stage circuit may utilize a third native device to track a transconductance and provide a reference current that becomes proportional to VTH to maintain tighter gain across process, variation, and temperature (PVT). The second stage circuit may utilize a current folding stage to provide a high gain for faster conversion of intermediate signals. The duty cycle balancer may utilize a fourth native device to balance a rise and fall delay skew across the PVT to maintain tighter duty cycle.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: August 23, 2022
    Assignee: Western Digital Technologies, Inc.
    Inventors: Shiv Mathur, Ashish Savadia, Tejaswini K
  • Publication number: 20220200533
    Abstract: Storage devices are capable of utilizing receiver devices with native devices configured to support lower voltage supplies for higher read performances. The receiver device may include a current source circuit, first and second stage circuits, and a duty cycle balancer circuit. The first stage circuit may utilize first and second native devices with a threshold voltage (VTH) that enables proper lower voltage operations in saturation at high speeds. The current source stage circuit may utilize a third native device to track a transconductance and provide a reference current that becomes proportional to VTH to maintain tighter gain across process, variation, and temperature (PVT). The second stage circuit may utilize a current folding stage to provide a high gain for faster conversion of intermediate signals. The duty cycle balancer may utilize a fourth native device to balance a rise and fall delay skew across the PVT to maintain tighter duty cycle.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 23, 2022
    Inventors: Shiv Mathur, Ashish Savadia, Tejaswini K
  • Patent number: 10861508
    Abstract: A methodology and structure for a encoding a data stat signal in the data lock signal, e.g., the data strobe signal such as DBQ. The data strobe signal can maintain the clock continuity, e.g., the rise and fall edges are at the timing signal, and the data inversion can be based on the amplitude of the data strobe signal. This allows the data set on the data lines, e.g., D0-D7, to either be non-inverted or inverted, to save power consumed in the memory device.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: December 8, 2020
    Assignee: SanDisk Technologies LLC
    Inventors: Shiv Mathur, Nitin Gupta, Ramakrishnan Subramanian