Li & Cai Intellectual Property (USA) Office
Operation method for LED dimming device
Disclosed is an operation method for LED dimming device. The operation method includes the following steps. Step A: sampling a pulse width modulation signal, and respectively counting for a time period when the pulse width modulation signal is at high level and a time period when the pulse width modulation signal is at low level. Step B: determining whether a rising edge of the pulse width modulation signal is detected. Step C: calculating a duty cycle of the pulse width modulation signal when the rising edge is detected. Step D: resetting a counter module. Step E: driving a LED module according to the duty cycle.
ANPEC ELECTRONICS CORPORATION
H Y H
H05B Y02B H05B
inventional additional inventional
Che-Chang
Chang