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:
May. 10, 1994
Filed:
Jul. 17, 1992
Campbell Cromer, Gourock, GB;
Richard I Knox, Bridge of Weir, GB;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Apparatus for setting the color point of a color display device comprises a video signal generator for generating an image on the display device and a color analyzer for measuring the chromaticity of the image to produce digital coordinates corresponding to the color point of the image on a chromaticity reference chart. The apparatus further comprises a computer system connected to the color analyzer. The computer system includes interface means for reading the digital coordinates from the color analyzer, display means for displaying a cursor at a point corresponding to the coordinates within a graphical representation of the reference chart, and processor means for moving the cursor within the graphical representation in response to a change in the coordinates read from the color analyzer. The apparatus advantageously permits rapid adjustment of the color point of a display device to a desired value with a high level of measurement repeatability. Any recalibration of the apparatus can be performed by adjusting a set of digital values stored in the computer system.