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. 27, 2010
Filed:
Feb. 09, 2006
Gianluca Ragonesi, Fiumefreddo Di Sicilia, IT;
Patrizia Milazzo, Sant'Agata Li Battiati, IT;
Salvatore Musumeci, Fiumefreddo Di Sicilia, IT;
Giuseppe Platania, Catania, IT;
Gianluca Ragonesi, Fiumefreddo Di Sicilia, IT;
Patrizia Milazzo, Sant'Agata Li Battiati, IT;
Salvatore Musumeci, Fiumefreddo Di Sicilia, IT;
Giuseppe Platania, Catania, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A device includes at least two circuit branches, each of said at least two circuit branches comprising at least one LED diode. The device comprises a supply circuit that provides an electric supply of said at least two circuit branches and includes a variable resistance. The device comprises a controller coupled to said at least two circuit branches and suitable for varying said resistance in reply to a variation of the current that flows in one of said at least two circuit branches to vary the electric supply of said at least two circuit branches.