摘要 |
<p>It is presented a lighting device comprising: at least one alternating current source configured to provide alternating current of at least a first and a second frequency, at least one light source, at least one impedance unit connected to the light source, affecting a first current from the at least one alternating current source to flow through the at least one light source, wherein an impedance of the impedance unit is configured to be frequency controlled, such that when the alternating current is of the first frequency the first current is relatively high and when the alternating current is of the second frequency the first current is relatively low. A corresponding display device, television device and method are also presented.</p> |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;KAHLMAN, HENRICUS, M., J., M.;VAN DER VEEKEN, RENATUS, W., C. |
发明人 |
KAHLMAN, HENRICUS, M., J., M.;VAN DER VEEKEN, RENATUS, W., C. |