Patent ID: 8247989

Claim:
A lamp detection driving system, comprising: a micro-controller unit for providing a pulse width modulation (PWM) signal, a lamp current control signal and a plurality of detection reference signals based on a recipe; a driving signal control circuit, electrically coupled to the micro-controller unit, for generating a plurality of preliminary control signals based on the PWM signal; a plurality of driving circuits, electrically coupled to the driving signal control circuit, each of the driving circuits being utilized to generate a driving signal for driving a corresponding lamp based on the preliminary control signals; a defect detection module, electrically coupled to the micro-controller unit, for generating a plurality of detection signals based on the detection reference signals and a plurality of feedback signals, wherein the defect detection module comprises a plurality of defect detection units, and each of the defect detection units further comprises: an open-circuit detection circuit for generating an open-circuit detection signal of the detection signals based on a lamp current signal of the feedback signals and a lamp open-circuit reference signal, the lamp open-circuit reference signal being a default current reference signal or an adjustable current reference signal of the detection reference signals, the lamp current signal being a lamp rear-end current signal or a lamp front-end current signal; a short-circuit detection circuit for generating a short-circuit detection signal of the detection signals based on a lamp front-end voltage signal of the feedback signals and a voltage reference signal, the voltage reference signal being a default voltage reference signal or an adjustable voltage reference signal of the detection reference signals; a lamp-current balance detection circuit for generating a lamp-current balance detection signal of the detection signals based on the lamp rear-end current signal, a high-current reference signal and a low-current reference signal, the high-current reference signal being a default high-current reference signal or an adjustable high-current reference current of the detection reference signals, the low-current reference signal being a default low-current reference signal or an adjustable low-current reference current of the detection reference signals; and a port reverse-connected detection circuit for generating a reverse-connected detection signal of the detection signals based on the lamp rear-end current signal, the lamp front-end current signal and a reverse-connected detection reference signal, the reverse-connected detection reference signal being a default reverse-connected detection reference signal or an adjustable reverse-connected detection reference signal of the detection reference signals; and a feedback circuit, electrically coupled to the defect detection module, for generating the feedback signals based on at least one lamp current or at least one lamp voltage of at least one lamp.