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. 27, 2020
Filed:
Nov. 02, 2015
Signify Holding B.v., Eindhoven, NL;
Martinus Wilhelmus Blum, Eindhoven, NL;
Theo Gerrit Zijlman, Tilburg, NL;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
An analogue dimmer driver for driving an LED lighting element () to generate coded light comprises an output component () which provides a primary current (i), a capacitor () connected to the output component, a switch (S) via which the lighting element is connectable to the current source in parallel with the capacitor. Switching is performed by periodically opening and closing the switch to code information into light generated by the lighting element. The output component has an input configured to receive a dimming signal. Responsive to a change in the dimming signal: i) the primary current is increased so as to increase the average power of the generated light and ii) the duty cycle of the switching is increased by an amount sufficient to prevent the peak level of the current though the lighting element when the switch is closed (i+i) from exceeding a predetermined level (i).