EP 2156432 A1 20100224 - CIRCUIT ARRANGEMENT AND ACTUATION METHOD FOR SEMI-CONDUCTOR LIGHT SOURCES
Title (en)
CIRCUIT ARRANGEMENT AND ACTUATION METHOD FOR SEMI-CONDUCTOR LIGHT SOURCES
Title (de)
SCHALTUNGSANORDNUNG UND ANSTEUERVERFAHREN FÜR HALBLEITERLICHTQUELLEN
Title (fr)
CIRCUIT ET PROCÉDÉ DE COMMANDE POUR DES SOURCES LUMINEUSES SEMI-CONDUCTRICES
Publication
Application
Priority
EP 2007055792 W 20070613
Abstract (en)
[origin: WO2008151664A1] The invention relates to a circuit arrangement and a actuation method for actuating semi-conductor light sources, comprising video electronics producing a timing signal (int Strobe) and an image value table, a driver circuit made of a digital (1) and an analog (3, 7) part, and a semi-conductor light source module (5), which may comprise one or more semi-conductor light sources, wherein between the driver circuit and the semi-conductor light source module a switch (S1, S2,...) is disposed, which is actuated by the driver circuit and which can switch the signal controlling the target brightness of the semi-conductor light source module to ground after the digital-to-analog converter (7) processing. The use of the switch enables the production of very short light pulses, the minimum pulse duration of which is independent of the delay time of the digital-to-analog converter.
IPC 8 full level
G09G 3/34 (2006.01); H05B 44/00 (2022.01)
CPC (source: EP US)
G09G 3/3413 (2013.01 - EP US); H05B 45/20 (2020.01 - EP US); H05B 45/327 (2020.01 - EP US); G09G 2310/0235 (2013.01 - EP US); G09G 2310/0237 (2013.01 - EP US); G09G 2320/0633 (2013.01 - EP US); G09G 2320/064 (2013.01 - EP US); G09G 2320/0653 (2013.01 - EP US); Y02B 20/30 (2013.01 - US)
Citation (search report)
See references of WO 2008151664A1
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
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008151664 A1 20081218; CN 101681596 A 20100324; EP 2156432 A1 20100224; JP 2010531052 A 20100916; KR 20100021518 A 20100224; TW 200906211 A 20090201; US 2010171773 A1 20100708
DOCDB simple family (application)
EP 2007055792 W 20070613; CN 200780053310 A 20070613; EP 07730106 A 20070613; JP 2010511498 A 20070613; KR 20107000704 A 20070613; TW 97121512 A 20080610; US 66301207 A 20070613