CKC & Partners Co., Ltd.
Illumination control circuit and illumination control method
The invention discloses an illumination control circuit and an illumination control method. The illumination control method includes modulating an alternating current input signal and accordingly generating a dimming signal, which includes several waveform pulses each with an adjustable conduction angles; continuously sampling the waveform pulses of the dimming signal and forming an average waveform pulse from the sampled waveform pulses; extracting the average waveform pulse, which has an average conduction angle corresponding to the conduction angles of the waveform pulses; performing an integration on the sampled average waveform pulse and accordingly generating a current-controlling signal; and driving an illumination lamp according to the current-controlling signal.
Lextar Electronics Corporation
Y H
Y02B H05B
additional inventional
Chun-Kuang Feng-Ling Po-Shen Hui-Ying
Chen Lin Chen Chen