Patents by Inventor Stephen Michael Leach

Stephen Michael Leach 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).

  • Diversity switch combiner
    Patent number: 7643813
    Abstract: A diversity switch combiner for use in systems for receiving multi-carrier wideband signals is arranged to determine, during a guard interval, which antenna provides the strongest carrier, for each of a plurality of carrier frequencies. A switch is then operated to select, for the subsequent symbol, that antenna which provides the greatest number of strongest carriers.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: January 5, 2010
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Simon R. Saunders, Stephen Michael Leach
  • Diversity switch combiner
    Patent number: 7636561
    Abstract: A diversity switch combiner for use in systems for receiving wideband signals is arranged to split the received signal into separate channels each carrying a respective frequency band. Respective switch means are provided for each channel in order to switch the input of each channel between different antennas. A switch control determines the switch setting in accordance with the result of a comparison operation, preferably performed during a guard period, in which the signal qualities for different settings are compared.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: December 22, 2009
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Simon R. Saunders, Stephen Michael Leach
  • Diversity switch combiner
    Publication number: 20050107048
    Abstract: A diversity switch combiner for use in systems for receiving multi-carrier wideband signals is arranged to determine, during a guard interval, which antenna provides the strongest carrier, for each of a plurality of carrier frequencies. A switch is then operated to select, for the subsequent symbol, that antenna which provides the greatest number of strongest carriers.
    Type: Application
    Filed: November 10, 2004
    Publication date: May 19, 2005
    Applicant: Mitsubishi Electric Information Technology Centre Europe B.V.
    Inventors: Simon Saunders, Stephen Michael Leach