Patents by Inventor Jayant Mittal

Jayant Mittal 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).

  • Method and apparatus for gating a strobe signal from a memory and subsequent tracking of the strobe signal over time
    Patent number: 9324409
    Abstract: A method, non-transitory computer readable medium and circuit for gating a strobe (DQS) signal are disclosed. The method sends a read command to a memory, sends a strobe clock signal after the read command is sent and before the DQS signal is received from the memory, wherein the strobe clock signal comprises a duration equal to a duration of the DQS signal, gates the DQS signal based on the strobe clock signal to generate a positively gated strobe signal for indicating a rising edge of the DQS signal, wherein the gating is performed during a pre-amble of the DQS signal and generates a negatively gated strobe signal based on the positively gated strobe signal for indicating a falling edge of the DQS signal.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: April 26, 2016
    Assignee: XILINX, INC.
    Inventors: Terence J. Magee, Jayant Mittal
  • Read clock forwarding for multiple source-synchronous memory interfaces
    Patent number: 9281049
    Abstract: Systems, devices, and circuits for source-synchronous memory interfaces are disclosed. For example, a device includes a first NAND gate with an input for receiving a serial mode enable signal. In addition, the device also includes a second NAND gate with an input for receiving a forwarded strobe signal and an input for receiving an output of the first NAND gate. The device also includes a third NAND gate with an input for receiving a data strobe signal, and an XNOR gate with an input for receiving an output of the second NAND gate and an input for receiving an output of the third NAND gate.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: March 8, 2016
    Assignee: XILINX, INC.
    Inventors: Terence J. Magee, Jayant Mittal
  • Method and apparatus for controlling an operating mode for an embedded Ethernet media access controller
    Patent number: 8284801
    Abstract: Method and apparatus for controlling an operating mode of an Ethernet media access controller (MAC) embedded in a programmable device is described. In some examples, a configuration circuit is configured to receive a configuration signal from configuration memory of the programmable device and a host signal from a host bus of the programmable device, and configured to output a control length check disable signal the value of which depends on the value of at least one of the configuration signal or the host signal. A parameter check circuit is configured to receive a control signal derived from at least one of the control length check disable signal or the configuration signal, and configured to selectively disable checking a length of each control frame in frames received by the Ethernet MAC based on a value of the control signal.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: October 9, 2012
    Assignee: Xilinx, Inc.
    Inventors: Mehulkumar R. Vashi, Robert Yin, Jayant Mittal, Nicholas McKay, Julian Kain, Martin B. Rhodes, Mark R. Nethercot