Led lighting control integrated circuit having embedded programmable nonvolatile memory

An LED lighting control integrated circuit comprising:

• a first nonvolatile memory;
• a plurality of first lookup tables stored in the first nonvolatile memory comprising a uniformity-recovery lookup table for providing a plurality of uniformity-recovery compensation signals according to an LED damage situation of an LED lighting module, the uniformity-recovery lookup table being created based on predetermined uniformity-recovery regulations for recovering spatial uniformity of chromaticity and luminance concerning a variety of LED damage situations of the LED lighting module;
• a signal processing unit coupled to the first nonvolatile memory for generating a plurality of sets of control signals based on the plurality of uniformity-recovery compensation signals;
• a pulse-width-modulation signal generating module coupled to the signal processing unit for generating a plurality of sets of PWM signals, the PWM signal generating module comprising:
• a plurality of PWM signal generators for generating the plurality of sets of PWM signals based on the plurality of sets of control signals respectively;
• a driving module coupled to the PWM signal generating module for providing a plurality of sets of currents to the LED lighting module, the driving module comprising:
• a plurality of driving circuits coupled to the plurality of PWM signal generators respectively for providing the plurality of sets of currents to the LED lighting module based on the plurality of sets of PWM signals respectively;
• and
• a current sensing unit coupled to the first nonvolatile memory and the plurality of driving circuits for generating a plurality of current sensing signals based on the plurality of sets of currents;
• wherein the LED damage situation of the LED lighting module is determined based on the plurality of current sensing signals.

An LED lighting control integrated circuit comprising:

• a first nonvolatile memory;
• a uniformity-recovery lookup table stored in the first nonvolatile memory for providing a plurality of uniformity-recovery compensation signals according to an LED damage situation of an LED lighting module, the uniformity-recovery lookup table being created based on predetermined uniformity-recovery regulations for recovering spatial uniformity of chromaticity and luminance concerning a variety of LED damage situations of the LED lighting module;
• a signal processing unit coupled to the first nonvolatile memory for generating a plurality of sets of control signals based on the plurality of uniformity-recovery compensation signals;
• a pulse-width-modulation signal generating module coupled to the signal processing unit for generating a plurality of sets of PWM signals, the PWM signal generating module comprising:
• a plurality of PWM signal generators for generating the plurality of sets of PWM signals based on the plurality of sets of control signals respectively;
• a driving module coupled to the PWM signal generating module for providing a plurality of sets of currents and a plurality of common voltages to the LED lighting module, the driving module comprising:
• a plurality of driving circuits coupled to the plurality of PWM signal generators respectively for providing the plurality of sets of currents to the LED lighting module based on the plurality of sets of PWM signals respectively;
• and
• a voltage driving circuit coupled to the signal processing unit for providing a plurality of common voltages to the LED lighting module based on a voltage control signal generated by the signal processing unit;
• and
• a current sensing unit coupled to the first nonvolatile memory, the voltage driving circuit, and the plurality of driving circuits for generating a plurality of current sensing signals based on the plurality of sets of currents and a plurality of output currents from the voltage driving circuit;
• wherein the LED damage situation of the LED lighting module is determined based on the plurality of current sensing signals.