| 摘要 |
A method and apparatus comprises regulating, by a modulator (106) of a LED controller (150), a plurality of current sinks (161,171,181) to operate in a linear region of a current-to-voltage curve which is associated with a constant value of resistance (110,112,114), wherein each current sink (161,171,181) is coupled to each of a plurality of LED strings (160,170,180), receiving, by the modulator (106), information of first current flowing through each of a plurality of LED strings (160,170,180), processing, by a control logic (104) coupled to the modulator (106), the information of the first current, and based on the processed information of the first current, providing, by the control logic (104), at least two choices of information of second current that is to be flown through each respective LED string (160,170,180). |
