| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an LED driving control unit capable of compensating for a delay caused by signal processing.SOLUTION: The LED driving control unit comprises: a voltage edge detection unit for detecting an amount of variation in an inputted rectified voltage, and outputting second control signals corresponding to the amount of variation in the rectified voltage to a control logic; a reference voltage generator for generating and outputting a reference voltage according to reference voltage setting signals; a comparison unit for comparing the reference voltage with a voltage level of the rectified voltage and outputting first control signals to the control logic; and a control logic for sensing the first control signals and the second control signals, controlling driving of a first light emitting group to an n-th light emitting group, and outputting the reference voltage setting signals. The control logic calculates reference voltage adjustment values based on the second control signals for compensating a delay caused by signal processing in an LED driving control unit, and generates the reference voltage setting signals based on the reference voltage adjustment values and a threshold voltage for the first light emitting group and the n-th light emitting group.</p> |
