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    • 4. 发明授权
    • Independently controllable illumination device
    • 独立可控的照明装置
    • US08624527B1
    • 2014-01-07
    • US12749083
    • 2010-03-29
    • Noam MeirIlan LandsmannOri SpierTania KosburdEran Fine
    • Noam MeirIlan LandsmannOri SpierTania KosburdEran Fine
    • H05B37/00
    • H05B33/0872H05B33/086H05B33/0869
    • An illumination system in accordance with an embodiment hereof includes a plurality of LED units, a system controller, at least one sensing unit, and a plurality of local controllers each associated with at least one LED unit. Each LED unit includes a plurality of differently colored, independently controllable LEDs forming a color gamut. The system controller generates control signals for each of the LED units consistent with a desired system-level output. The sensing unit(s) senses an operating state of the LEDs during operation thereof, and each local controller includes a memory and a compensator. The memory includes calibration data for use over a short time period, and the compensator updates the calibration data based on measurements from a sensing unit over a long time period. Based at least in part on the calibration data, the local controller operates the LEDs of the LED unit to maintain output intensities consistent with commands issued by the system controller.
    • 根据本发明实施例的照明系统包括多个LED单元,系统控制器,至少一个感测单元以及与至少一个LED单元相关联的多个本地控制器。 每个LED单元包括形成色域的多个不同颜色的独立可控LED。 系统控制器为每个LED单元生成与所需系统级输出一致的控制信号。 感测单元在其操作期间感测LED的操作状态,并且每个本地控制器包括存储器和补偿器。 存储器包括在短时间内使用的校准数据,并且补偿器基于来自感测单元的测量长时间更新校准数据。 至少部分地基于校准数据,本地控制器操作LED单元的LED以保持与由系统控制器发出的命令一致的输出强度。