Patents Examined by Jacques H Louis-Jaques
  • Patent number: 7506230
    Abstract: A method, system and apparatus for detecting soft errors in non-dataflow circuits. In a preferred embodiment, input is received at a latch system. The latch system consists of two pairs of latches. The second pair of latches is parallel to the first pair of latches. Both pairs of latches capture the input. However, the second pair of latches captures the input later in time relative to the first pair of latches latch. The captured input is then transferred from the first latch in each pair of latches to the second latch in each pair of latches. A comparison is made of the input in the two second latches. If the input captured in the two second latches is not the same, then a message is sent to a recovery unit.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: March 17, 2009
    Assignee: International Business Machines Corporation
    Inventors: Sam Gat-Shang Chu, Peter Juergen Klim, Michael Ju Hyeok Lee, Jose Angel Paredes