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发明申请
US20090147176A1 PULSE WIDTH MODULATED DIMMING OF MULTIPLE LAMP LCD BACKLIGHT USING DISTRIBUTED MICROCONTROLLERS 有权
使用分布式微控制器的多个灯泡LCD背光的脉冲宽度调制调制

PULSE WIDTH MODULATED DIMMING OF MULTIPLE LAMP LCD BACKLIGHT USING DISTRIBUTED MICROCONTROLLERS
摘要：
In a scanning backlight for an LCD display, several backlights (101, 102, 103, 10n) provide a precisely positioned dimming pulse corresponding to a transition point of the LCD screen. The dimming pulse must be variable with video synchronization frequency and dimming duty cycle, which is a performance intensive calculation. One microcontroller performing this operation is limited in scope. By using several ballast controllers (141, 142, 143, 14n), the solution is scalable, in that it is flexible if the number of backlights (101, 102, 103, 10n) changes. Additionally, by using several controllers (141, 142, 143, 14n), added functions can be performed by the ballast controllers (141, 142, 143, 14n).
摘要（中）：

在用于LCD显示器的扫描背光中，几个背光源（101,102,103,10n）提供对应于LCD屏幕的转变点的精确定位的调光脉冲。 调光脉冲必须随着视频同步频率和调光占空比而变化，这是一个性能密集的计算。 执行此操作的一个微控制器的范围有限。 通过使用几个镇流器控制器（141,142,143,14n），解决方案是可扩展的，因为如果背光（101,102,103,10n）的数量改变，则灵活。 另外，通过使用多个控制器（141,142,143,14n），可以由镇流器控制器（141,142,143,14n）执行附加功能。

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