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:
Dec. 09, 2014
Filed:
May. 24, 2012
James Jason Locascio, Mountain View, CA (US);
James Jason LoCascio, Mountain View, CA (US);
Maxim Integrated Products, Inc., San Jose, CA (US);
Abstract
Various embodiments of the present invention relate to a LED illumination system, and more particularly, to systems, devices and methods of employing a LED driver control loop to adjust the brightness of the LED light smoothly and suppress flickering/blinking. The LED driver control loop comprises a LED driver, a charge integrator, a VPWR modulator, and a driver controller. The charge integrator generates a voltage VC that is associated with a LED current iand illumination energy for the LED light. The VPWR modulator provides a clamping voltage VPWR such that the LED driver ceases to inject the LED current ias the voltage VC saturates at VPWR during each powering cycle. The clamping voltage VPWR is dynamically adjusted at the end of each powering cycle to gradually adjust the brightness and avoid flickering or blinking while still ensuring illumination efficiency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile