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:
Sep. 19, 2017
Filed:
Dec. 08, 2016
Nxp B.v., Eindhoven, NL;
Henricus Cornelis Johannes Buthker, Mierlo, NL;
NXP B.V., Eindhoven, NL;
Abstract
An LED controller includes: an absolute value calculator to calculate an initial light intensity value for a desired light output curve; a fade-in calculator to calculate a first light intensity value; and a fade-out calculator to calculate a second light intensity value. The LED controller also includes processing logic configured to: select one of the fade-in calculator and the fade-out calculator as a selected incremental value calculator, based on a directional indicator that indicates whether a fade-in light output effect or a fade-out light output effect is requested, initialize coefficients of the absolute value calculator and the selected incremental value calculator with a set of coefficient values associated with the desired light output curve, and output a set of voltage levels to a set of pulse width modulation (PWM) generators that output a set of PWM signals, which control light output of a string of LEDs.