Patents by Inventor Richard Leighton Howe

Richard Leighton Howe 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).

  • Pitch based high quantization halftone dot linearization for rendering high quality color images
    Patent number: 8654402
    Abstract: A device, system, and method for reducing the pitch-to-pitch variation of color using pitch-based linearization of halftone screens are presented. A selection of images is printed at different pitches, and each image is measured and tracked with its pitch. Pitch-based TRCs are constructed using patches, which may be scheduled during print run or during machine diagnostic process and halftone dots are constructed and uploaded in the image path for each pitch. The updated dots are then used to produce a linearized halftone image for transfer to a print surface which results in improved color balance.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: February 18, 2014
    Assignee: Xerox Corporation
    Inventors: Lalit Keshav Mestha, Richard Leighton Howe, Raja Bala
  • Pitch based high quantization halftone dot linearization for rendering high quality color images
    Publication number: 20090296156
    Abstract: A device, system, and method for reducing the pitch-to-pitch variation of color using pitch-based linearization of halftone screens are presented. A selection of images is printed at different pitches, and each image is measured and tracked with its pitch. Pitch-based TRCs are constructed using patches, which may be scheduled during print run or during machine diagnostic process and halftone dots are constructed and uploaded in the image path for each pitch. The updated dots are then used to produce a linearized halftone image for transfer to a print surface which results in improved color balance.
    Type: Application
    Filed: May 27, 2009
    Publication date: December 3, 2009
    Applicant: Xerox Corporation
    Inventors: Lalit Keshav Mestha, Richard Leighton Howe, Raja Bala