Patents by Inventor Philip Nord Jenkins

Philip Nord Jenkins 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: 8031823
    Abstract: A system and method of reducing skew between a plurality of signals transmitted with a transmit clock is described. Skew is detected between the received transmit clock and each of received data signals. Delay is added to the clock or to one or more of the plurality of data signals to compensate for the detected skew. The delay added to each of the plurality of delayed signals is updated to adapt to changes in detected skew.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: October 4, 2011
    Assignee: Silicon Graphics, Inc.
    Inventors: Philip Nord Jenkins, Frank N. Cornett
  • Publication number: 20090034673
    Abstract: A system and method of reducing skew between a plurality of signals transmitted with a transmit clock is described. Skew is detected between the received transmit clock and each of received data signals. Delay is added to the clock or to one or more of the plurality of data signals to compensate for the detected skew. The delay added to each of the plurality of delayed signals is updated to adapt to changes in detected skew.
    Type: Application
    Filed: October 7, 2008
    Publication date: February 5, 2009
    Applicant: Silicon Graphics, Inc.
    Inventors: Philip Nord Jenkins, Frank N. Cornett
  • Patent number: 7433441
    Abstract: A system and method of reducing skew between a plurality of signals transmitted with a transmit clock is described. Skew is detected between the received transmit clock and each of received data signals. Delay is added to the clock or to one or more of the plurality of data signals to compensate for the detected skew. The delay added to each of the plurality of delayed signals is updated to adapt to changes in detected skew.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: October 7, 2008
    Assignee: Silicon Graphics, Inc.
    Inventors: Philip Nord Jenkins, Frank N. Cornett
  • Patent number: 7031420
    Abstract: A system and method of reducing skew between a plurality of signals transmitted with a transmit clock is described. Skew is detected between the received transmit clock and each of received data signals. Delay is added to the clock or to one or more of the plurality of data signals to compensate for the detected skew. Each of the plurality of delayed signals is compared to a reference signal to detect changes in the skew. The delay added to each of the plurality of delayed signals is updated to adapt to changes in the detected skew.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: April 18, 2006
    Assignee: Silicon Graphics, Inc.
    Inventors: Philip Nord Jenkins, Frank N. Cornett
  • Patent number: 6803872
    Abstract: Circuitry that provides additional delay to early arriving signals such that all data signals arrive at a receiving latch with same path delay. The delay of a forwarded clock reference is also controlled such that the capturing clock edge will be optimally positioned near quadrature (depending on latch setup/hold requirements). The circuitry continuously adapts to data and clock path delay changes and digital filtering of phase measurements reduce errors brought on by jittering data edges. The circuitry utilizes only the minimum amount of delay necessary to achieve objective thereby limiting any unintended jitter. Particularly, this programmable differential delay circuit with fine delay adjustment is designed to allow the skew between ASICS to be minimized. This includes skew between data bits, between data bits and clocks as well as minimizing the overall skew in a channel between ASICS.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: October 12, 2004
    Assignee: Silicon Graphics, Inc.
    Inventors: John F. DeRyckere, Philip Nord Jenkins, Frank Nolan Cornett
  • Publication number: 20020175728
    Abstract: Circuitry that provides additional delay to early arriving signals such that all data signals arrive at a receiving latch with same path delay. The delay of a forwarded clock reference is also controlled such that the capturing clock edge will be optimally positioned near quadrature (depending on latch setup/hold requirements). The circuitry continuously adapts to data and clock path delay changes and digital filtering of phase measurements reduce errors brought on by jittering data edges. The circuitry utilizes only the minimum amount of delay necessary to achieve objective thereby limiting any unintended jitter. Particularly, this programmable differential delay circuit with fine delay adjustment is designed to allow the skew between ASICS to be minimized. This includes skew between data bits, between data bits and clocks as well as minimizing the overall skew in a channel between ASICS.
    Type: Application
    Filed: May 9, 2002
    Publication date: November 28, 2002
    Applicant: Silicon Graphics, Inc.
    Inventors: John F. DeRyckere, Philip Nord Jenkins, Frank Nolan Cornett
  • Publication number: 20020175730
    Abstract: Circuitry that provides additional delay to early arriving signals such that all data signals arrive at a receiving latch with same path delay. The delay of a forwarded clock reference is also controlled such that the capturing clock edge will be optimally positioned near quadrature (depending on latch setup/hold requirements). The circuitry continuously adapts to data and clock path delay changes and digital filtering of phase measurements reduce errors brought on by jittering data edges. The circuitry utilizes only the minimum amount of delay necessary to achieve objective thereby limiting any unintended jitter. Particularly, this programmable differential delay circuit with fine delay adjustment is designed to allow the skew between ASICS to be minimized. This includes skew between data bits, between data bits and clocks as well as minimizing the overall skew in a channel between ASICS.
    Type: Application
    Filed: May 9, 2002
    Publication date: November 28, 2002
    Applicant: Silicon Graphics, Inc.
    Inventors: John F. DeRyckere, Philip Nord Jenkins, Frank Nolan Cornett
  • Patent number: 6486723
    Abstract: Circuitry that provides additional delay to early arriving signals such that all data signals arrive at a receiving latch with same path delay. The delay of a forwarded clock reference is also controlled such that the capturing clock edge will be optimally positioned near quadrature (depending on latch setup/hold requirements). The circuitry continuously adapts to data and clock path delay changes and digital filtering of phase measurements reduce errors brought on by jittering data edges. The circuitry utilizes only the minimum amount of delay necessary to achieve objective thereby limiting any unintended jitter. Particularly, this programmable differential delay circuit with fine delay adjustment is designed to allow the skew between ASICS to be minimized. This includes skew between data bits, between data bits and clocks as well as minimizing the overall skew in a channel between ASICS.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: November 26, 2002
    Assignee: Silicon Graphics, Inc.
    Inventors: John F. DeRyckere, Philip Nord Jenkins, Frank Nolan Cornett
  • Patent number: 6417713
    Abstract: Circuitry that provides additional delay to early arriving signals such that all data signals arrive at a receiving latch with same path delay. The delay of a forwarded clock reference is also controlled such that the capturing clock edge will be optimally positioned near quadrature (depending on latch setup/hold requirements). The circuitry continuously adapts to data and clock path delay changes and digital filtering of phase measurements reduce errors brought on by jittering data edges. The circuitry utilizes only the minimum amount of delay necessary to achieve objective thereby limiting any unintended jitter. Particularly, this programmable differential delay circuit with fine delay adjustment is designed to allow the skew between ASICS to be minimized. This includes skew between data bits, between data bits and clocks as well as minimizing the overall skew in a channel between ASICS.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: July 9, 2002
    Assignee: Silicon Graphics, Inc.
    Inventors: John F. DeRyckere, Philip Nord Jenkins, Frank Nolan Cornett