Patents by Inventor Simon Derek Bramwell

Simon Derek Bramwell 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).

  • Detection apparatus
    Patent number: 6678862
    Abstract: A partial response maximum likelihood (PRML) bit detection apparatus is disclosed for deriving a bit sequence (xk) from an input information signal. The apparatus comprises input means for receiving the input information signal. The apparatus further comprises sampling means for sampling the input information signal at sampling instants so as to obtain samples (zk) of the information signal at said sampling instants. The apparatus also comprises calculating means (50, 70) for (a) calculating (50) at a sampling instant ti for one or more of a plurality of states sj (Sa, Sb, Sc) at said sampling instant, an optimum path metric value PM(sj,ti) and for determining for said one or more states a best predecessor state at the directly preceding sampling instant ti−1, a state at said sampling instant identifying a sequence of n subsequent bits.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: January 13, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Johannes Wilhelmus Maria Bergmans, Willem Marie Julia Marcel Coene, Rob Otte, Simon Derek Bramwell