Single-cluster lamp drive device

Details Single-cluster lamp drive device Single-cluster lamp drive device

2005-03-24

2008-11-11

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

Reexamination Certificate

active

07450095

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.

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