Patents by Inventor Christopher R. Speirs

Christopher R. Speirs 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).

  • Compression format and apparatus using the new compression format for temporarily storing image data in a frame memory
    Patent number: 8285037
    Abstract: Display driver (40) with a frame memory (43) for temporarily storing image data representing a color image and a data bus for feeding RGB-formatted image data to said display driver (40). The display driver (2) comprises means for performing an encoding decision process (42) that is based on an analysis of the nature of a pixel cluster of said image data. The means for performing a decision process (42) allow the display driver (43) to decide whether a first compression format or a second compression format is to be applied for compression of said pixel cluster. The first compression means (33.1) perform a compression of said pixel cluster into said first compression format (quantized RGB), and the second compression means (33.2) perform a compression of said pixel cluster into said second compression format (color compressed).
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: October 9, 2012
    Assignee: NXP B.V.
    Inventors: Christopher R. Speirs, Matheus J. G. Lammers
  • COMPRESSION FORMAT AND APPARATUS USING THE NEW COMPRESSION FORMAT FOR TEMPORARILY STORING IMAGE DATA IN A FRAME MEMORY
    Publication number: 20090052772
    Abstract: Display driver (40) with a frame memory (43) for temporarily storing image data representing a color image and a data bus for feeding RGB-formatted image data to said display driver (40). The display driver (2) comprises means for performing an encoding decision process (42) that is based on an analysis of the nature of a pixel cluster of said image data. The means for performing a decision process (42) allow the display driver (43) to decide whether a first compression format or a second compression format is to be applied for compression of said pixel cluster. The first compression means (33.1) perform a compression of said pixel cluster into said first compression format (quantized RGB), and the second compression means (33.2) perform a compression of said pixel cluster into said second compression format (color compressed).
    Type: Application
    Filed: February 22, 2006
    Publication date: February 26, 2009
    Applicants: NXP B.V., Koninklijke Philips Electronics N.V.
    Inventors: Christopher R. Speirs, Matheus J., G. Lammers