EP 1528841 A3 20050706 - Lighting control
Title (en)
Lighting control
Title (de)
Beleuchtungssteuerung
Title (fr)
Commande d' éclairage
Publication
Application
Priority
GB 0325514 A 20031031
Abstract (en)
[origin: EP1528841A2] A lighting system is controlled by lighting control apparatus 40 dependent on a received input signal 41 representing a required perceived illumination level. The lighting control apparatus comprising a sigma-delta converter having an input filter 47 for providing a filtered input signal 411 from the input signal 41 to a precision comparator 44 for comparing the filtered input signal with a feedback input signal 451 from a system model module 45 simulating an effect of the input signal on the lighting system. A resultant perceived illumination level is compared with the required perceived illumination level, and the precision comparator provides an output signal 42 for controlling a power supply 43 to the lighting system 46 to provide the required perceived illumination level. <IMAGE>
IPC 1-7
IPC 8 full level
H05B 33/08 (2006.01); H05B 44/00 (2022.01)
CPC (source: EP GB US)
H05B 45/20 (2020.01 - EP GB US); H05B 45/22 (2020.01 - EP US)
Citation (search report)
- [X] US 2002047624 A1 20020425 - STAM JOSEPH S [US], et al
- [X] US 6349023 B1 20020219 - GREENBERG MICHAEL PHILIP [US]
- [X] DE 10146094 A1 20030403 - BOSCH GMBH ROBERT [DE]
- [A] WO 0124584 A1 20010405 - COLOR KINETICS INC [US]
- [A] US 5471052 A 19951128 - RYCZEK LAWRENCE J [US]
- [A] US 2003076056 A1 20030424 - SCHUURMANS FRANK JEROEN PIETER [NL]
- [A] SINGH S S ET AL: "A study of sigma-delta modulation control strategies for multi-level voltage source inverters", 7TH. INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND VARIABLE SPEED DRIVES. PEVD'98. LONDON, SEPT. 21 -23, 1998, IEE CONFERENCE PUBLICATION NO. 456, LONDON : IEE, UK, 21 September 1998 (1998-09-21), pages 347 - 352, XP006504927, ISBN: 0-85296-704-7
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1528841 A2 20050504; EP 1528841 A3 20050706; GB 0325514 D0 20031203; GB 2407654 A 20050504; GB 2407654 B 20070808
DOCDB simple family (application)
EP 04256681 A 20041028; GB 0325514 A 20031031