The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2005
Filed:
Sep. 09, 2003
Paul David Doyle, San Marcos, CA (US);
Rafael Calderon, San Diego, CA (US);
Matthew C. Boyko, San Francisco, CA (US);
Roy Bragadeste, Round Rock, TX (US);
Don Moore, Renton, WA (US);
Mike Mckay, Shoreline, WA (US);
Karl Lang, Madison, WI (US);
Andrew Bryant, San Diego, CA (US);
Martin Kolinek, Bellevue, WA (US);
Paul David Doyle, San Marcos, CA (US);
Rafael Calderon, San Diego, CA (US);
Matthew C. Boyko, San Francisco, CA (US);
Roy Bragadeste, Round Rock, TX (US);
Don Moore, Renton, WA (US);
Mike McKay, Shoreline, WA (US);
Karl Lang, Madison, WI (US);
Andrew Bryant, San Diego, CA (US);
Martin Kolinek, Bellevue, WA (US);
Sony Corporation, Tokyo, JP;
Sony Electronics Inc., Park Ridge, NJ (US);
Abstract
A color calibration system includes a visual display terminal (VDT), a color calibration sensor optically coupled to the VDT, and a computer processing unit (CPU) electrically coupled to the VDT and the color calibration sensor. The VDT has a display screen and a plurality of color channels, each color channel having an intensity input, a bias input, and a gain input. The VDT produces an image on the display screen responsive to the intensity input. The color calibration sensor provides values responsive to the chromaticity and luminance of a test patch portion of the image on the display screen. The CPU performs calibration of the VDT including setting the bias of each color channel to reduce the difference between a target black point and the test patch with the intensity input at a minimum value for each color channel.