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:
Jun. 22, 2004
Filed:
Apr. 30, 2002
Christoph H. Krah, San Jose, CA (US);
Richard D. Cappels, Santa Clara, CA (US);
Apple Computer, Inc., Cupertino, CA (US);
Abstract
A system and method for dynamically correcting display characteristics to compensate for non-uniformities is disclosed. In the preferred embodiment, the display screen is divided into logical tiles, and then the initial correction parameters of the characteristics under consideration, namely convergence, brightness, hue, and beamlanding, are measured at the vertices of each tile. The dynamic correction circuitry automatically synchronizes the correction waveforms, which are functions of the locations on the physical display screen, with the control signals of the displayed image. Due to the synchronization, the previously stored initial correction parameters of the characteristics under consideration may be used to dynamically correct for uniformity of these characteristics. The preferred embodiment performs linear vertical and horizontal interpolation on the correction values between the vertices of the tiles.