Patents by Inventor Clive Scott Oldfield

Clive Scott Oldfield 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).

  • Method and apparatus for SAS speed adjustment
    Patent number: 8510606
    Abstract: A method for maintaining reliable communication between a command initiator and a target device is provided. After the command initiator detects an error corresponding to the target device and a path between the command initiator and the target device, the command initiator performs a downshift evaluation. The initiator maintains a transmission speed if the downshift evaluation determines that forgoing a transmission speed downshift is required, and reduces the transmission speed if the downshift evaluation determines that transmission speed downshift is required. The command initiator then logs the downshift evaluation result and reports any transmission speed change to a user.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: August 13, 2013
    Inventors: Randolph Eric Wight, Ruiling Luo, Clive Scott Oldfield
  • Method and apparatus for SAS speed adjustment
    Patent number: 8458527
    Abstract: A method for maintaining reliable communication on a bidirectional communication link is provided. A receiver on the bidirectional communication link detects an error and maintains a count of detected errors. The transmitter on the bidirectional communication link polls the receiver in order to determine the count of detected errors, and performs a downshift evaluation for the bidirectional communication link. In response to performing the downshift evaluation for the bidirectional communication link, the transmitter maintains a transmission speed of the bidirectional communication link if the downshift evaluation determines that forgoing transmission speed downshift is required for the bidirectional communication link, and reduces the transmission speed of the path if the downshift evaluation determines that transmission speed downshift is required for the bidirectional communication link.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: June 4, 2013
    Assignee: Dot Hill Systems Corporation
    Inventors: Clive Scott Oldfield, Tony Richard Kilwein, Mark Aaron VonLintel
  • Method and apparatus for SAS speed adjustment
    Publication number: 20110191637
    Abstract: A method for maintaining reliable communication between a command initiator and a target device is provided. After the command initiator detects an error corresponding to the target device and a path between the command initiator and the target device, the command initiator performs a downshift evaluation. The initiator maintains a transmission speed if the downshift evaluation determines that forgoing a transmission speed downshift is required, and reduces the transmission speed if the downshift evaluation determines that transmission speed downshift is required. The command initiator then logs the downshift evaluation result and reports any transmission speed change to a user.
    Type: Application
    Filed: July 21, 2010
    Publication date: August 4, 2011
    Applicant: DOT HILL SYSTEMS CORPORATION
    Inventors: Randolph Eric Wight, Ruiling Luo, Clive Scott Oldfield
  • Method and apparatus for SAS speed adjustment
    Publication number: 20110191644
    Abstract: A method for maintaining reliable communication on a bidirectional communication link is provided. A receiver on the bidirectional communication link detects an error and maintains a count of detected errors. The transmitter on the bidirectional communication link polls the receiver in order to determine the count of detected errors, and performs a downshift evaluation for the bidirectional communication link. In response to performing the downshift evaluation for the bidirectional communication link, the transmitter maintains a transmission speed of the bidirectional communication link if the downshift evaluation determines that forgoing transmission speed downshift is required for the bidirectional communication link, and reduces the transmission speed of the path if the downshift evaluation determines that transmission speed downshift is required for the bidirectional communication link.
    Type: Application
    Filed: September 14, 2010
    Publication date: August 4, 2011
    Applicant: DOT HILL SYSTEMS CORPORATION
    Inventors: Clive Scott Oldfield, Tony Richard Kilwein, Mark Aaron VonLintel