Single-cluster lamp drive device

Abstract

A single-cluster lamp drive device makes use of a controller to receive video data from a control system and then divides the video data into three sub video data. Next, these three sub video data are simultaneously and repetitively outputted to a digital-to-analog converter in every fixed time interval. Subsequently, the digital-to-analog converter converts these three sub video data to three analog voltages outputted to a voltage-to-current converter. Finally, the voltage-to-current converter converts these three analog voltages to three analog currents for driving light emitting devices to emit light, hence accomplishing voltage-in-current-out driving. The drive device drives a single-cluster lamp composed of one LED or several LEDs to adjust their brightness through current change, thereby coordinating with the control system to produce various color and pattern variations.

Dependencies are inferred from the claim text.