EP 2014136 B1 20131211 - ERROR DETECTION OF LIGHT-EMITTING DIODES
Title (en)
ERROR DETECTION OF LIGHT-EMITTING DIODES
Title (de)
FEHLERERKENNUNG VON LEUCHTDIODEN
Title (fr)
DÉTECTION D'ERREURS DE DIODES ÉLECTROLUMINESCENTES
Publication
Application
Priority
- EP 2007003449 W 20070419
- DE 102006018575 A 20060421
Abstract (en)
[origin: WO2007121927A1] The invention relates to an operating circuit for an LED system that has one or more LEDs connected in series, to each of which an element is connected in parallel that takes over the current through the LED in case of a cut-out failure of an LED. An acquisition unit is also provided that is designed to detect a cut-out failure of at least one LED by monitoring the temporal development of the diode current and the voltage on the LED system.
IPC 8 full level
H05B 44/00 (2022.01)
CPC (source: EP)
H05B 45/58 (2020.01); H05B 47/235 (2020.01)
Citation (examination)
DE 3441824 A1 19850605 - FERRANTI PLC [GB]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102006018575 A1 20071025; EP 2014136 A1 20090114; EP 2014136 B1 20131211; EP 2343954 A2 20110713; EP 2343954 A3 20120606; WO 2007121927 A1 20071101
DOCDB simple family (application)
DE 102006018575 A 20060421; EP 07724386 A 20070419; EP 11156563 A 20070419; EP 2007003449 W 20070419