Patent ID: 11864280
Assignee: AES GLOBAL HOLDINGS PTE LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method of calibrating illumination generated by a plurality of light sources of a light string, the method comprising:
controlling a power supply to output a first charge voltage to a light string driver coupled to the light string;
storing a first capacitor voltage in a storage capacitor of the light string driver based on the first charge voltage;
controlling a switch of the light string driver into a conduction state to discharge at least a portion of the first capacitor voltage stored in the storage capacitor through the plurality of light sources, through the switch, and through a sense resistor;
comparing a reference voltage with a resistor discharge voltage, the resistor discharge voltage generated across the sense resistor in response to the discharge of the at least a portion of the first capacitor voltage; and
if the resistor discharge voltage is greater than or equal to the reference voltage, storing the first charge voltage in a lookup table of a memory device.