Patents by Inventor Benedict Lau

Benedict Lau 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: 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
  • 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
  • Patent number: 11522544
    Abstract: Described are on-die termination (ODT) systems and methods that facilitate high-speed communication between a driver die and a receiver die interconnected via one or more signal transmission lines. An ODT control system in accordance with one embodiment calibrates and maintains termination resistances and drive currents to produce optimal output swing voltages. Comparison circuitry employed to calibrate the reference resistance is also used to calibrate the drive current. Termination elements in some embodiments are divided into two adjustable resistive portions, both of which are designed to minimize capacitive loading. One portion is optimized to produce a relatively high range of adjustment, while the other is optimized for fine-tuning and glitch-free switching.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: December 6, 2022
    Assignee: Rambus Inc.
    Inventors: Huy M. Nguyen, Vijay Gadde, Benedict Lau
  • 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
  • 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
  • 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
  • Publication number: 20200350913
    Abstract: Described are on-die termination (ODT) systems and methods that facilitate high-speed communication between a driver die and a receiver die interconnected via one or more signal transmission lines. An ODT control system in accordance with one embodiment calibrates and maintains termination resistances and drive currents to produce optimal output swing voltages. Comparison circuitry employed to calibrate the reference resistance is also used to calibrate the drive current. Termination elements in some embodiments are divided into two adjustable resistive portions, both of which are designed to minimize capacitive loading. One portion is optimized to produce a relatively high range of adjustment, while the other is optimized for fine-tuning and glitch-free switching.
    Type: Application
    Filed: May 19, 2020
    Publication date: November 5, 2020
    Inventors: Huy M. Nguyen, Vijay Gadde, Benedict Lau
  • 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
  • Patent number: 10666254
    Abstract: Described are on-die termination (ODT) systems and methods that facilitate high-speed communication between a driver die and a receiver die interconnected via one or more signal transmission lines. An ODT control system in accordance with one embodiment calibrates and maintains termination resistances and drive currents to produce optimal output swing voltages. Comparison circuitry employed to calibrate the reference resistance is also used to calibrate the drive current. Termination elements in some embodiments are divided into two adjustable resistive portions, both of which are designed to minimize capacitive loading. One portion is optimized to produce a relatively high range of adjustment, while the other is optimized for fine-tuning and glitch-free switching.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: May 26, 2020
    Assignee: Rambus Inc.
    Inventors: Huy M. Nguyen, Vijay Gadde, Benedict Lau
  • 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
  • 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
  • Publication number: 20190305777
    Abstract: Described are on-die termination (ODT) systems and methods that facilitate high-speed communication between a driver die and a receiver die interconnected via one or more signal transmission lines. An ODT control system in accordance with one embodiment calibrates and maintains termination resistances and drive currents to produce optimal output swing voltages. Comparison circuitry employed to calibrate the reference resistance is also used to calibrate the drive current. Termination elements in some embodiments are divided into two adjustable resistive portions, both of which are designed to minimize capacitive loading. One portion is optimized to produce a relatively high range of adjustment, while the other is optimized for fine-tuning and glitch-free switching.
    Type: Application
    Filed: March 18, 2019
    Publication date: October 3, 2019
    Inventors: Huy M. Nguyen, Vijay Gadde, Benedict Lau
  • 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
  • Patent number: 10270441
    Abstract: Described are on-die termination (ODT) systems and methods that facilitate high-speed communication between a driver die and a receiver die interconnected via one or more signal transmission lines. An ODT control system in accordance with one embodiment calibrates and maintains termination resistances and drive currents to produce optimal output swing voltages. Comparison circuitry employed to calibrate the reference resistance is also used to calibrate the drive current. Termination elements in some embodiments are divided into two adjustable resistive portions, both of which are designed to minimize capacitive loading. One portion is optimized to produce a relatively high range of adjustment, while the other is optimized for fine-tuning and glitch-free switching.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: April 23, 2019
    Assignee: Rambus Inc.
    Inventors: Huy M. Nguyen, Vijay Gadde, Benedict Lau
  • 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
  • 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
  • Publication number: 20180019752
    Abstract: Described are on-die termination (ODT) systems and methods that facilitate high-speed communication between a driver die and a receiver die interconnected via one or more signal transmission lines. An ODT control system in accordance with one embodiment calibrates and maintains termination resistances and drive currents to produce optimal output swing voltages. Comparison circuitry employed to calibrate the reference resistance is also used to calibrate the drive current. Termination elements in some embodiments are divided into two adjustable resistive portions, both of which are designed to minimize capacitive loading. One portion is optimized to produce a relatively high range of adjustment, while the other is optimized for fine-tuning and glitch-free switching.
    Type: Application
    Filed: August 24, 2017
    Publication date: January 18, 2018
    Inventors: Huy M. Nguyen, Vijay Gadde, Benedict Lau
  • 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
  • Patent number: 9780784
    Abstract: Described are on-die termination (ODT) systems and methods that facilitate high-speed communication between a driver die and a receiver die interconnected via one or more signal transmission lines. An ODT control system in accordance with one embodiment calibrates and maintains termination resistances and drive currents to produce optimal output swing voltages. Comparison circuitry employed to calibrate the reference resistance is also used to calibrate the drive current. Termination elements in some embodiments are divided into two adjustable resistive portions, both of which are designed to minimize capacitive loading. One portion is optimized to produce a relatively high range of adjustment, while the other is optimized for fine-tuning and glitch-free switching.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: October 3, 2017
    Assignee: Rambus Inc.
    Inventors: Huy M. Nguyen, Vijay Gadde, Benedict Lau
  • 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