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:
Jan. 10, 2017
Filed:
May. 29, 2014
Maxim Integrated Products, Inc., San Jose, CA (US);
Gianluca Mariano, San Martino Siccomario, IT;
Suresh Hariharan, Livermore, CA (US);
Maxim Integrated Products, Inc., San Jose, CA (US);
Abstract
A system includes a driver circuit, a modulator circuit, and a reset circuit. The driver circuit drives a plurality of light emitting diodes via a switch. The switch is controlled by a first signal having a first frequency. The driver circuit controls brightness of the light emitting diodes based on a second signal including a plurality of pulses. The modulator circuit modulates the first signal using a direct sequence spread spectrum modulation. The direct sequence spread spectrum modulation uses a sequence generated based on the first signal. The reset circuit resets the modulator circuit at each of the plurality of pulses of the second signal. The modulator circuit repeats the sequence at each of the plurality of pulses of the second signal.