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:
Apr. 09, 2013
Filed:
Dec. 20, 2007
Paolo DE Anna, Vallà di Riese Pio X, IT;
Michele Menegazzi, Paese, IT;
Oskar Schallmoser, Ottobrun, DE;
Nicola Zanforlin, Campodarsego, IT;
Paolo De Anna, Vallà di Riese Pio X, IT;
Michele Menegazzi, Paese, IT;
Oskar Schallmoser, Ottobrun, DE;
Nicola Zanforlin, Campodarsego, IT;
Osram Gesellschaft mit beschraenkter Haftung, Munich, DE;
Abstract
A drive arrangement for light sources may include: a connection line to feed a light source, a switch element coupled to said line to apply on/off signals to said line, and a controller to control operation of said switch, said controller being sensitive to at least one of a dimming signal representative of a desired dimming level for said light source and an information-carrying digital signal, wherein said controller is configured to control operation of said switch to: a) PWM modulate an on/off signal applied to said line as a function of said dimming signal, whereby the average current conveyed towards said light source and determined by said PWM modulated on/off signal controls the brightness of said light source, b) transmit said information-carrying digital signal as an on/off information signal applied to said line, whereby the information carried by said information-carrying digital signal is transmitted over said line.