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:
Mar. 29, 1994
Filed:
Jun. 16, 1992
Chester F Bassetti, Jr, Pleasanton, CA (US);
Cirrus Logic, Inc., Fremont, CA (US);
Abstract
An apparatus is disclosed for controlling primary color producing sub-pixels of a digitally commanded display to provide mixed colors in which sub-pixels are controlled over a programmable number N of consecutive frames to be either ON or OFF during each of the frames so that a desired time averaged brightness is produced of the primary color associated with each sub-pixel, and so that the combination of the produced time averaged brightnesss results in the color desired for the pixel to which the sub-pixels belong. The apparatus employs a modulo-N adder for programmably controlling each primary color sub-pixel by using a frame rate duty cycle approach.