Patents Assigned to Stratus Computer Systems, S.a.r.l.
  • Methods and apparatus for generating high-frequency clocks deterministically from a low-frequency system reference clock
    Patent number: 6813721
    Abstract: A method and apparatus for maintaining clock phase alignment among system modules of a fault-tolerant computing system. In one embodiment, a low-frequency system reference clock signal is distributed to all system modules where it is multiplied to generate higher-frequency local clock signals. All local clock signals are then synchronized to the rising edge of the reference clock signal and the first rising edge in relation to a timing event is also identified.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: November 2, 2004
    Assignee: Stratus Computer Systems, S.a.r.l.
    Inventors: Mark Tetreault, Michael McLoughlin, Jeffrey Somers