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:
Aug. 25, 2015
Filed:
Feb. 18, 2013
Zizala Lichtsysteme Gmbh, Wieselburg, AT;
Daniel Petsch, Gaming, AT;
ZIZALA LICHTSYSTEME GMBH, Wieselburg, AT;
Abstract
A light-emitting diode chain comprising a plurality of light-emitting diodes (LED. . . LED) connected in series and fed by a current source, in which each light-emitting diode is assigned a control circuit (), which has a series connection, connected in parallel with the light-emitting diode, between a reference voltage sink (D) of the voltage (U) and a controlled switch (Q) and is designed to compare the control voltage (U) at a control line () common to all control circuits, measured against is base point of the LED series circuit, with the voltage at the connection between the switch and the subsequent LED in the chain or the base point, and to close or to open the switch if the control voltage (U) falls below a predefined value or rises above a predefined value respectively.