Patents by Inventor Gregory B. Marshall

Gregory B. Marshall 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).

  • Digital correction for alignment of a plurality of color channels of a color image forming device
    Patent number: 7852531
    Abstract: A system and method are provided for digital correction of a plurality of color channels and color image data. In color reproduction, a color image may be composed of a plurality of superimposed color channels in a color space. In order to assure the proper alignment of color channels and exemplary applications such as color printing, one or more of the plurality of color channels which compose a complete color image may be scaled to an output resolution, and corrected in order to ensure proper alignment and authentic reproduction of a color image. In place of a plurality of independent clocks, one for each channel, a single clock is provided for every channel, and additional unit is supplied to scale each channel according to independent characteristics.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: December 14, 2010
    Assignee: Xerox Corporation
    Inventors: Aron Nacman, John Adam Handwork, Theresa M. Marconi, Xing Li, Peter D. McCandlish, Gregory B. Marshall
  • DIGITAL CORRECTION FOR ALIGNMENT OF A PLURALITY OF COLOR CHANNELS OF A COLOR IMAGE FORMING DEVICE
    Publication number: 20090154804
    Abstract: A system and method are provided for digital correction of a plurality of color channels and color image data. In color reproduction, a color image may be composed of a plurality of superimposed color channels in a color space hi order to assure the proper alignment of color channels and exemplary applications such as color printing, one or more of the plurality of color channels which compose a complete color image may be scaled to an output resolution, and corrected in order to ensure proper alignment and authentic reproduction of a color image. In place of a plurality of independent clocks, one for each channel, a single clock is provided for every channel, and additional unit is supplied to scale each channel according to independent characteristics.
    Type: Application
    Filed: December 12, 2007
    Publication date: June 18, 2009
    Applicant: XEROX CORPORATION
    Inventors: Aron NACMAN, John Adam HANDWORK, Theresa M. MARCONI, Xing LI, Peter D. MCCANDLISH, Gregory B. MARSHALL