Patents by Inventor Nicholas Atkinson

Nicholas Atkinson 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).

  • Calculating apparatus and method for use in a maximum likelihood detector and/or decoder
    Patent number: 7822138
    Abstract: A calculator for use in a maximum likelihood detector, including: a receiver for receiving convolution encoded data which may include noise; first calculator for calculating a first component of a first path metric difference between two possible sequences of states corresponding to the convolution encoded data, the two sequences each having a length equal to a constraint length of the convolution encoded data, and the two sequences starting at a same state and ending at a same state, adapted to calculate the first component using the convolution-encoded data and using convolution encoding parameters of the convolution-encoded data, wherein the first component is independent of the two sequences; and second calculator for calculating a second component of the first path metric difference using the two sequences, wherein the second component is independent of the convolution encoded data; and using the first and second components to obtain the first path metric difference.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: October 26, 2010
    Assignee: Forte Design Systems Limited
    Inventors: Oleg Zaboronski, Nicholas Atkinson, Robert Charles Jackson, Theo Drane, Andrei Vityaev
  • Calculating apparatus and method for use in a maximum likelihood detector and/or decoder
    Publication number: 20050094748
    Abstract: A calculator for use in a maximum likelihood detector, including: a receiver for receiving convolution encoded data which may include noise; first calculator for calculating a first component of a first path metric difference between two possible sequences of states corresponding to the convolution encoded data, the two sequences each having a length equal to a constraint length of the convolution encoded data, and the two sequences starting at a same state and ending at a same state, adapted to calculate the first component using the convolution-encoded data and using convolution encoding parameters of the convolution-encoded data, wherein the first component is independent of the two sequences; and second calculator for calculating a second component of the first path metric difference using the two sequences, wherein the second component is independent of the convolution encoded data; and using the first and second components to obtain the first path metric difference.
    Type: Application
    Filed: June 14, 2004
    Publication date: May 5, 2005
    Inventors: Oleg Zaboronski, Nicholas Atkinson, Robert Jackson, Theo Drane, Andrei Vityaev