| 摘要 |
<p>A light-emitting diode control circuit (100) is provided, that includes: a duration selection circuit for selecting one of a first duration value, a second duration value, a third duration value, or a fourth duration value as a selected duration value based on a selection signal; a control clock generator (120) for generating a control clock signal based on a slow clock signal and the selected duration value; a selection signal generator (130) for generating the selection signal based on the control clock signal; an intensity signal generator (140) for generating a current intensity signal based on a first intensity value, a second intensity value, the control clock signal, and the selection signal; a reference wave generator (145) for generating a reference wave based on a fast clock signal; and a comparator (160) for comparing the current intensity signal and the reference wave to generate a pulse width modulation signal to control the light-emitting diode.</p> |
