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:
Oct. 10, 2017
Filed:
Mar. 26, 2015
Xicato, Inc., San Jose, CA (US);
Barry Mark Loveridge, San Jose, CA (US);
Jeffrey P. Hushley, Kailua, HI (US);
Xicato, Inc., San Jose, CA (US);
Abstract
An LED based illumination device is dimmed by controlling an average current supplied to the LED based illumination device. The currently supplied to the LED may be supplied by an LED driver that is in communication with a dimming control engine. The dimming control engine may receive an indication of a desired average current level. The dimming control engine controls the LED driver to periodically switch a current supplied to an LED of the LED based illumination device from a high state to a low state over a switching period, wherein both a duration of the switching period is adjusted and a ratio of a time in the high state to a time in the low state is adjusted as the average current supplied to the LED based illumination device transitions from a first average current level to the desired average current level.