Patents by Inventor Nhat M. Nguyen

Nhat M. Nguyen 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: 11886375
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: January 30, 2024
    Assignee: RAMBUS INC.
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Publication number: 20230144498
    Abstract: Various aspects related to methods, systems, and computer readable media for simulating and controlling a physical system, such as, for example, a greenhouse. A computer-implemented method can include forming a computational graph, wherein a structure of the computational graph is based on one or more physical processes in the physical system, receiving, from one or more sensors, measured values of one or more observed states of the physical system, setting initial values of one or more unobserved states of the physical system, receiving values of one or more control inputs a for the physical system, and iteratively simulating the physical system on a computer using x, y and a as simulation inputs to the computational graph.
    Type: Application
    Filed: November 9, 2021
    Publication date: May 11, 2023
    Inventors: Kenneth Tran, Nhat M. Nguyen
  • Publication number: 20230051578
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Application
    Filed: May 23, 2022
    Publication date: February 16, 2023
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Patent number: 11341079
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: May 24, 2022
    Assignee: RAMBUS INC.
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Publication number: 20200159688
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Application
    Filed: October 21, 2019
    Publication date: May 21, 2020
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Patent number: 10452601
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: October 22, 2019
    Assignee: RAMBUS INC.
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Publication number: 20180329859
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Application
    Filed: April 6, 2018
    Publication date: November 15, 2018
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Patent number: 9940299
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: April 10, 2018
    Assignee: RAMBUS INC.
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Publication number: 20170177540
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Application
    Filed: December 28, 2016
    Publication date: June 22, 2017
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Patent number: 9569396
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: February 14, 2017
    Assignee: Rambus Inc.
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Publication number: 20160124895
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Application
    Filed: November 3, 2015
    Publication date: May 5, 2016
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Patent number: 9178647
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: November 3, 2015
    Assignee: RAMBUS INC.
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Publication number: 20150092869
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 2, 2015
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Patent number: 8855217
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: October 7, 2014
    Assignee: Rambus Inc.
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Publication number: 20130148709
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Application
    Filed: October 1, 2012
    Publication date: June 13, 2013
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Patent number: 8279948
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined errorrate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: October 2, 2012
    Assignee: Rambus Inc.
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Publication number: 20100103994
    Abstract: A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined errorrate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.
    Type: Application
    Filed: December 10, 2007
    Publication date: April 29, 2010
    Inventors: Yohan U. Frans, Hae-Chang Lee, Brian S. Leibowitz, Simon Li, Nhat M. Nguyen
  • Patent number: 7308065
    Abstract: A receiver adapted to be coupled to a data bus and configured to receive data in accordance with a receive clock includes first and second delay-locked loops. The first delay-locked loop is configured to generate a plurality of phase vectors from a first reference clock, and the second delay-locked loop is coupled to the first delay-locked loop and configured to generate the receive clock from at least one phase vector selected from the plurality of phase vectors and a second reference clock.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: December 11, 2007
    Assignee: Rambus Inc.
    Inventors: Kevin S. Donnelly, Pak Shing Chau, Mark A. Horowitz, Thomas H. Lee, Mark G. Johnson, Benedict C. Lau, Leung Yu, Bruno W. Garlepp, Yiu-Fai Chan, Jun Kim, Chanh Vi Tran, Donald C. Stark, Nhat M. Nguyen
  • Patent number: 7248086
    Abstract: A loop filter of a compensating phase-locked loop contains capacitors formed from transistors with thin gate oxide dielectric layers. Leakage current leaks through the capacitors. To avoid jitter in the output signal of the phase-locked loop that would otherwise be caused by the leakage current, a leakage compensation circuit is provided. The leakage compensation circuit of a first embodiment replicates the leakage current using a replication capacitor and a current mirror. The voltage across the replication capacitor is proportional to the control voltage of a voltage-controlled oscillator of the compensating phase-locked loop. A second embodiment generates the compensation current by controlling the voltage on the gate of a transistor. The gate voltage depends on charge added and subtracted by a charge pump in addition to the charge pumps in the loop filter. A third embodiment applies a leakage compensation circuit to a delay locked loop.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: July 24, 2007
    Assignee: Rambus, Inc.
    Inventors: Yohan Frans, Nhat M. Nguyen
  • Patent number: 7183805
    Abstract: Multi-mode signal drivers with a single output circuit that may be controlled using a mode select input and that may include a common mode (CM) voltage compensation mechanism are described. In a first exemplary implementation, a multi-mode output driver is adapted to drive signals from a single output circuit according to at least two modes, such as a current mode logic (CML) signaling mode and a low voltage differential signaling (LVDS) mode. In a second exemplary implementation, a circuit comprises a quasi-LVDS output driver in which a differential amplifier circuit is connected in series with an adjustable resistive element and a programmable current source. In a third exemplary implementation, a CM voltage of an output driver circuit changes with changes to a programmable bias current. To compensate, a feedback mechanism provides a compensation signal to a variable resistive element of the output driver circuit to maintain a desired CM voltage.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: February 27, 2007
    Assignee: Rambus Inc.
    Inventors: Yueyong Wang, Barry W. Daly, Nhat M. Nguyen, Yohan U. Frans