Patents by Inventor Yohan U. Frans

Yohan U. Frans 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: 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
  • Publication number: 20220223224
    Abstract: The disclosed embodiments relate to components of a memory system that support timing-drift calibration. In specific embodiments, this memory system contains a memory device (or multiple devices) which includes a clock distribution circuit and an oscillator circuit which can generate a frequency, wherein a change in the frequency is indicative of a timing drift of the clock distribution circuit. The memory device also includes a measurement circuit which is configured to measure the frequency of the oscillator circuit.
    Type: Application
    Filed: December 20, 2021
    Publication date: July 14, 2022
    Inventors: Yohan U. Frans, Wayne F. Ellis, Akash Bansal
  • 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
  • Patent number: 11211139
    Abstract: The disclosed embodiments relate to components of a memory system that support timing-drift calibration. In specific embodiments, this memory system contains a memory device (or multiple devices) which includes a clock distribution circuit and an oscillator circuit which can generate a frequency, wherein a change in the frequency is indicative of a timing drift of the clock distribution circuit. The memory device also includes a measurement circuit which is configured to measure the frequency of the oscillator circuit.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: December 28, 2021
    Assignee: Rambus Inc.
    Inventors: Yohan U. Frans, Wayne F. Ellis, Akash Bansal
  • Publication number: 20200312422
    Abstract: The disclosed embodiments relate to components of a memory system that support timing-drift calibration. In specific embodiments, this memory system contains a memory device (or multiple devices) which includes a clock distribution circuit and an oscillator circuit which can generate a frequency, wherein a change in the frequency is indicative of a timing drift of the clock distribution circuit. The memory device also includes a measurement circuit which is configured to measure the frequency of the oscillator circuit.
    Type: Application
    Filed: March 19, 2020
    Publication date: October 1, 2020
    Inventors: Yohan U. Frans, Wayne F. Ellis, Akash Bansal
  • 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: 10600497
    Abstract: The disclosed embodiments relate to components of a memory system that support timing-drift calibration. In specific embodiments, this memory system contains a memory device (or multiple devices) which includes a clock distribution circuit and an oscillator circuit which can generate a frequency, wherein a change in the frequency is indicative of a timing drift of the clock distribution circuit. The memory device also includes a measurement circuit which is configured to measure the frequency of the oscillator circuit.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 24, 2020
    Assignee: Rambus Inc.
    Inventors: Yohan U. Frans, Wayne F. Ellis, Akash Bansal
  • 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
  • Publication number: 20180174667
    Abstract: The disclosed embodiments relate to components of a memory system that support timing-drift calibration. In specific embodiments, this memory system contains a memory device (or multiple devices) which includes a clock distribution circuit and an oscillator circuit which can generate a frequency, wherein a change in the frequency is indicative of a timing drift of the clock distribution circuit. The memory device also includes a measurement circuit which is configured to measure the frequency of the oscillator circuit.
    Type: Application
    Filed: December 19, 2017
    Publication date: June 21, 2018
    Inventors: Yohan U. Frans, Wayne F. Ellis, Akash Bansal
  • 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
  • Patent number: 9859021
    Abstract: The disclosed embodiments relate to components of a memory system that support timing-drift calibration. In specific embodiments, this memory system contains a memory device (or multiple devices) which includes a clock distribution circuit and an oscillator circuit which can generate a frequency, wherein a change in the frequency is indicative of a timing drift of the clock distribution circuit. The memory device also includes a measurement circuit which is configured to measure the frequency of the oscillator circuit.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: January 2, 2018
    Assignee: Rambus Inc.
    Inventors: Yohan U. Frans, Wayne F. Ellis, Akash Bansal
  • 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
  • Patent number: 9431131
    Abstract: The disclosed embodiments relate to components of a memory system that support timing-drift calibration. In specific embodiments, this memory system contains a memory device (or multiple devices) which includes a clock distribution circuit and an oscillator circuit which can generate a frequency, wherein a change in the frequency is indicative of a timing drift of the clock distribution circuit. The memory device also includes a measurement circuit which is configured to measure the frequency of the oscillator circuit. Additionally, the memory system contains a memory controller which can transmit a request to the memory device to trigger the memory device to measure the frequency of the oscillator circuit. The memory controller is also configured to receive the measured frequency from the memory device and uses the measured frequency to determine the timing drift in the memory device.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: August 30, 2016
    Assignee: Rambus Inc.
    Inventors: Yohan U. Frans, Wayne F. Ellis, Akash Bansal
  • Patent number: 9401225
    Abstract: The disclosed embodiments relate to components of a memory system that support timing-drift calibration. In specific embodiments, this memory system contains a memory device (or multiple devices) which includes a clock distribution circuit and an oscillator circuit which can generate a frequency, wherein a change in the frequency is indicative of a timing drift of the clock distribution circuit. The memory device also includes a measurement circuit which is configured to measure the frequency of the oscillator circuit. Additionally, the memory system contains a memory controller which can transmit a request to the memory device to trigger the memory device to measure the frequency of the oscillator circuit. The memory controller is also configured to receive the measured frequency from the memory device and uses the measured frequency to determine the timing drift in the memory device.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: July 26, 2016
    Assignee: Rambus Inc.
    Inventors: Yohan U. Frans, Wayne F. Ellis, Akash Bansal
  • Patent number: 9362006
    Abstract: The disclosed embodiments relate to components of a memory system that support timing-drift calibration. In specific embodiments, this memory system contains a memory device (or multiple devices) which includes a clock distribution circuit and an oscillator circuit which can generate a frequency, wherein a change in the frequency is indicative of a timing drift of the clock distribution circuit. The memory device also includes a measurement circuit which is configured to measure the frequency of the oscillator circuit. Additionally, the memory system contains a memory controller which can transmit a request to the memory device to trigger the memory device to measure the frequency of the oscillator circuit. The memory controller is also configured to receive the measured frequency from the memory device and uses the measured frequency to determine the timing drift in the memory device.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: June 7, 2016
    Assignee: Rambus Inc.
    Inventors: Yohan U. Frans, Wayne F. Ellis, Akash Bansal
  • Patent number: 9349422
    Abstract: The disclosed embodiments related to a clocked memory system which performs a calibration operation at a full-rate frequency to determine a full-rate calibration state that specifies a delay between a clock signal and a corresponding data signal in the clocked memory system. Next, the clocked memory system uses the full-rate calibration state to calculate a sub-rate calibration state, which is associated with a sub-rate frequency (e.g., ½, ¼ or ? of the full-rate frequency). The system then uses this sub-rate calibration state when the clocked memory system is operating at the sub-rate frequency. This calculation of the sub-rate state calibration states eliminates the need to perform an additional time-consuming calibration operation for each sub-rate.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: May 24, 2016
    Assignee: Rambus Inc.
    Inventors: Akash Bansal, Yohan U. Frans, Kishore V. Kasamsetty, Todd Bystrom, Simon Li, Arun Vaidyanath
  • 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