Patents by Inventor Keith Graham Shaw

Keith Graham Shaw 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).

  • Fractional multiplexing of serial attached small computer system interface links
    Patent number: 10171193
    Abstract: Methods, devices, and systems relating to Serial Attached SCSI (SAS) storage interconnect technology are provided. An SAS serial connection is established between an SAS initiator and an SAS expander over a physical link for communications between the SAS initiator and a plurality of target devices. The plurality of target devices is in communication with the SAS expander. SAS packets associated with each of the plurality of target devices are dynamically multiplexed and transmitted over the single SAS serial connection. Each SAS packet comprises one or more information bits indicating the target device with which the SAS packet is associated. The dynamically multiplexed SAS packets transmitted over the SAS connection may comprise SAS packets associated with at least two target devices having different maximum physical link rates. A result may be improved bandwidth utilization of the physical link when legacy SAS target devices with slower physical link rates are utilized.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: January 1, 2019
    Assignee: Microsemi Solutions (U.S.), Inc.
    Inventors: Gregory Arthur Tabor, John Matthew Adams, Keith Graham Shaw, Larrie Simon Carr, Salman Ghufran
  • FRACTIONAL MULTIPLEXING OF SERIAL ATTACHED SMALL COMPUTER SYSTEM INTERFACE LINKS
    Publication number: 20180219641
    Abstract: Methods, devices, and systems relating to Serial Attached SCSI (SAS) storage interconnect technology are provided. An SAS serial connection is established between an SAS initiator and an SAS expander over a physical link for communications between the SAS initiator and a plurality of target devices. The plurality of target devices is in communication with the SAS expander. SAS packets associated with each of the plurality of target devices are dynamically multiplexed and transmitted over the single SAS serial connection. Each SAS packet comprises one or more information bits indicating the target device with which the SAS packet is associated. The dynamically multiplexed SAS packets transmitted over the SAS connection may comprise SAS packets associated with at least two target devices having different maximum physical link rates. A result may be improved bandwidth utilization of the physical link when legacy SAS target devices with slower physical link rates are utilized.
    Type: Application
    Filed: January 27, 2017
    Publication date: August 2, 2018
    Inventors: Gregory Arthur TABOR, John Matthew ADAMS, Keith Graham SHAW, Larrie Simon CARR, Salman GHUFRAN
  • Method and controller for requesting queue arbitration and coalescing memory access commands
    Patent number: 9626309
    Abstract: Controller and method for requesting arbitration of a queue. The controller comprises a coalescing engine for determining a number of commands in a queue and requesting arbitration of the queue when a coalescing condition is satisfied. The method comprises determining the number of commands in a queue and requesting arbitration of the queue when a coalescing condition is satisfied.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: April 18, 2017
    Assignee: Microsemi Storage Solutions (U.S.), Inc.
    Inventors: Bradley Burke, Keith Graham Shaw