Patents by Inventor Martin J. Ratcliffe

Martin J. Ratcliffe 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).

  • Patent number: 7197194
    Abstract: An apparatus for variably scaling video picture signals comprising a first circuit and a second circuit. The first circuit may be configured to generate one or more data signals vertically scaled to a first value in response to (i) the video picture signals and (ii) one or more control signals. The second circuit may be configured to generate one or more output signals horizontally scaled to a second value in response to (i) the one or more data signals and (ii) the one or more control signals. The first value and the second value are independently selectable.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: March 27, 2007
    Assignee: LSI Logic Corporation
    Inventor: Martin J. Ratcliffe
  • Patent number: 6744428
    Abstract: An apparatus comprising a first circuit and a second circuit. The first circuit may be conf igured to generate an address signal in response to (i) a first ramp signal, (ii) a second ramp signal, and (iii) a format signal. The second circuit may be configured to generate the first and second ramp signals in response to a one or more control signals. The address signal may support a raster format when the format signal is in a first state and may support a macroblock format when the format signal is in a second state.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: June 1, 2004
    Assignee: LSI Logic Corporation
    Inventors: David N. Pether, Martin J. Ratcliffe