Patent ID: 7781984

Claim:
A system for processing analog voltage for cold-cathode fluorescent lamp, the system comprising: a voltage-to-current converter configured to receive an input analog voltage signal and generate a first current signal; a current processing component configured to receive the first current signal and a predetermined current and generate a second current signal; a current-to-voltage converter configured to receive the second current signal and generate an output analog voltage signal; and a dimming controller configured to receive the output analog voltage signal and generate a control signal for driving at least a cold-cathode fluorescent lamp; wherein: the input analog voltage signal ranges from a first input voltage level to a second input voltage level; the output analog voltage signal ranges from a first output voltage level to a second output voltage level; the output analog voltage signal equals a sum of a predetermined voltage and a product of a predetermined constant and the input analog voltage signal, the predetermined constant not being equal to zero; the first output voltage level corresponds to the first input voltage level based on at least information associated with the predetermined voltage and the predetermined constant; and the second output voltage level corresponds to the second input voltage level based on at least information associated with the predetermined voltage and the predetermined constant.