Patents by Inventor Sivakumar Doraiswamy

Sivakumar Doraiswamy 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).

  • Memory controller for strobe-based memory systems
    Patent number: 11842760
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Grant
    Filed: September 15, 2022
    Date of Patent: December 12, 2023
    Assignee: Rambus Inc.
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • MEMORY CONTROLLER FOR STROBE-BASED MEMORY SYSTEMS
    Publication number: 20230105557
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Application
    Filed: September 15, 2022
    Publication date: April 6, 2023
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • Memory controller for strobe-based memory systems
    Patent number: 11450374
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: September 20, 2022
    Assignee: Rambus Inc.
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • MEMORY CONTROLLER FOR STROBE-BASED MEMORY SYSTEMS
    Publication number: 20210134347
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 6, 2021
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • Memory controller for strobe-based memory systems
    Patent number: 10861532
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: December 8, 2020
    Assignee: Rambus Inc.
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • MEMORY CONTROLLER FOR STROBE-BASED MEMORY SYSTEMS
    Publication number: 20200211619
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • Memory controller for strobe-based memory systems
    Patent number: 10529408
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: January 7, 2020
    Assignee: Rambus Inc.
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • MEMORY CONTROLLER FOR STROBE-BASED MEMORY SYSTEMS
    Publication number: 20190362766
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Application
    Filed: June 7, 2019
    Publication date: November 28, 2019
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • Memory controller for strobe-based memory systems
    Patent number: 10332583
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: June 25, 2019
    Assignee: Rambus Inc.
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • MEMORY CONTROLLER FOR STROBE-BASED MEMORY SYSTEMS
    Publication number: 20180277193
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Application
    Filed: February 15, 2018
    Publication date: September 27, 2018
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • Memory controller for strobe-based memory systems
    Patent number: 9905286
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: February 27, 2018
    Assignee: Rambus Inc.
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • MEMORY CONTROLLER FOR STROBE-BASED MEMORY SYSTEMS
    Publication number: 20170372769
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Application
    Filed: July 10, 2017
    Publication date: December 28, 2017
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • Memory controller for strobe-based memory systems
    Patent number: 9728247
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: August 8, 2017
    Assignee: Rambus Inc.
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • MEMORY CONTROLLER FOR STROBE-BASED MEMORY SYSTEMS
    Publication number: 20170169876
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 15, 2017
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • Memory controller for strobe-based memory systems
    Patent number: 9564192
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: February 7, 2017
    Assignee: Rambus Inc.
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • MEMORY CONTROLLER FOR STROBE-BASED MEMORY SYSTEMS
    Publication number: 20170004866
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Application
    Filed: July 6, 2016
    Publication date: January 5, 2017
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • Memory controller for strobe-based memory systems
    Patent number: 9390777
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: July 12, 2016
    Assignee: Rambus Inc.
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • MEMORY CONTROLLER FOR STROBE-BASED MEMORY SYSTEMS
    Publication number: 20160005446
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Application
    Filed: August 7, 2015
    Publication date: January 7, 2016
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • Memory controller for strobe-based memory systems
    Patent number: 9105325
    Abstract: An integrated circuit (IC) memory controller is disclosed. The memory controller includes a receiver to receive a strobe signal and provide an internal strobe signal. An adjustable delay circuit delays an enable signal to generate a delayed enable signal. A gate circuit generates a gated strobe signal using the delayed enable signal that masks transitions of the internal strobe signal that occur prior to a valid region of the internal strobe signal. A sample circuit samples data using the gated strobe signal.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: August 11, 2015
    Assignee: Rambus Inc.
    Inventors: Jade M. Kizer, Sivakumar Doraiswamy, Benedict Lau
  • Driver calibration methods and circuits
    Patent number: 8988100
    Abstract: Described are amplifiers that facilitate high-speed communication with calibrated drive strength and termination impedance. Drivers and termination elements can be divided into a number N of parallel portions, one or more of which can be disabled and updated without interfering with signal (e.g., clock or data) transmission. Some embodiments identify inactive elements by examining incoming signals.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: March 24, 2015
    Assignee: Rambus Inc.
    Inventors: Huy M. Nguyen, Vijay Gadde, Sivakumar Doraiswamy