Patents by Inventor Mark Q. Shaw

Mark Q. Shaw 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: 7619771
    Abstract: A printer includes a color measurement system. The printer can, in response to a trigger event, automatically calibrate the color measurement system using a first print medium of a first media type.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: November 17, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Steve A. Jacob, Mark Q. Shaw, Dennis A. Abramsohn
  • Patent number: 6938977
    Abstract: The method of the present invention involves first estimating the common gamut of the colors that this printer is expected to reproduce. A left-to-right test target is printed in single-pass, uni-directional print mode, (printing on left-to-right scans only) and a color calibration table for left-to-right printing is generated. A right-to-left test pattern is printed in single-pass, uni-directional print mode, (printing on right-to-left scans only) and a color calibration table specific for right-to-left printing is generated. The next step of the present invention involves determining the mathematical intersection of the gamuts produced by printing in left-to-right mode only and by printing in right-to-left mode only. This is done by, first printing the left-to-right test target processed by the color calibration table associated with the primary print direction.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: September 6, 2005
    Assignee: Xerox Corporation
    Inventors: David A. Corbin, Mark Q. Shaw, Peter A. Torpey
  • Patent number: 6654143
    Abstract: A method of adjusting an image production system to account for a variable property of a desired output medium includes storing a reference characterization of at least one measured value associated with a reference output medium. An output value, adjusted for the variable property of the desired output medium, is determined based on data including the reference characterization of the reference output medium, for example stored in color lookup tables, color rendering dictionaries, or the like. Based on the adjusted output value determined, the desired output medium is then printed or otherwise marked using the output value.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: November 25, 2003
    Assignee: Xerox Corporation
    Inventors: Edul N. Dalal, Thyagarajan Balasubramanian, D. Rene Rasmussen, Gaurav Sharma, Mark Q. Shaw, Michael E. Farrell, David C. Robinson