McClure, Qualey & Rodack, LLP
LED device and dimming system and method thereof
A dimming system includes a signal generating circuit, a first dimming circuit and a second dimming circuit. The signal generating circuit generates the driving signal according to the input signal, and switches the driving signal between multiple states according to the switch signal. The first dimming circuit generates the dimming signal to adjust the luminance of the LED device according to the driving signal. When the driving signal is switched from the first states to the second states, the dimming signal is changed by the first dimming circuit so that the luminance of the LED device is adjusted from the first luminance to the second luminance. The second dimming circuit adjusts the input signal according to the control signal so that the dimming signal is adjusted and the luminance of the LED device is between the first luminance and minimum luminance, or between the second luminance and minimum luminance.
LEXTAR ELECTRONICS CORPORATION
F F H
F21Y F21V H05B
additional inventional inventional
Chun-Jong Chien-Nan Po-Shen Jhao-Cyuan Tzu-Hao
Chang Yeh Chen Huang Liu