Inventor
XIA YONGPING
US15 patents
⚠️ This page may combine multiple inventors who share the name “XIA YONGPING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PHILIPS ELECTRONICS NA
12 patentsUS5872429AFeb 16, 1999
Coded communication system and method for controlling an electric lamp
PHILIPS ELECTRONICS NA315 citations98
US5691605ANov 25, 1997
Electronic ballast with interface circuitry for multiple dimming inputs
PHILIPS ELECTRONICS NA176 citations98
US5604411AFeb 18, 1997
Electronic ballast having a triac dimming filter with preconditioner offset control
PHILIPS ELECTRONICS NA177 citations98
US5489827AFeb 6, 1996
Light controller with occupancy sensor
PHILIPS ELECTRONICS NA453 citations98
US5650694AJul 22, 1997
Lamp controller with lamp status detection and safety circuitry
PHILIPS ELECTRONICS NA129 citations97
US5559395ASep 24, 1996
Electronic ballast with interface circuitry for phase angle dimming control
PHILIPS ELECTRONICS NA127 citations97
US5808422ASep 15, 1998
Lamp ballast with lamp rectification detection circuitry
PHILIPS ELECTRONICS NA95 citations95
US5751115AMay 12, 1998
Lamp controller with lamp status detection and safety circuitry
PHILIPS ELECTRONICS NA98 citations95
US5726644AMar 10, 1998
Lighting control system with packet hopping communication
PHILIPS ELECTRONICS NA386 citations95
US5834906ANov 10, 1998
Instant start for an electronic ballast preconditioner having an active power factor controller
PHILIPS ELECTRONICS NA20 citations88
US5739645AApr 14, 1998
Electronic ballast with lamp flash protection circuit
PHILIPS ELECTRONICS NA40 citations88
US5808423ASep 15, 1998
Lighting control for reducing energy consumption
PHILIPS ELECTRONICS NA29 citations85