Patents by Inventor David Walter Childs

David Walter Childs 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).

  • Automatic color map conversion
    Patent number: 6693726
    Abstract: A method of converting a source color map from a source print mode to a destination print mode comprises the steps of performing a constant hue clipping process to preserve ink ratios of destination colors to source colors and performing a channel independent clipping process to preserve ink volume.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: February 17, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Walter Childs, Philip B Cowan, Jay S Gondek, Julie Hong Ouyang
  • Automatic color map conversion
    Publication number: 20030043391
    Abstract: A method of converting a source color map from a source print mode to a destination print mode comprises the steps of performing a constant hue clipping process to preserve ink ratios of destination colors to source colors and performing a channel independent clipping process to preserve ink volume.
    Type: Application
    Filed: August 31, 2001
    Publication date: March 6, 2003
    Inventors: David Walter Childs, Philip B. Cowan, Jay S. Gondek, Julie Hong Ouyang