公开(公告)号：US20120038615A1

公开(公告)日：2012-02-16

申请号：US13035556

申请日：2011-02-25

申请人： Wa-Hing LEUNG ,  Johnny SIU

发明人： Wa-Hing LEUNG ,  Johnny SIU

IPC分类号： G09G3/32 ,  G06F3/038

CPC分类号： H05B33/083 ,  H05B33/0824 ,  H05B33/0845

摘要： An LED array switching apparatus, comprises: a plurality of LED arrays arranged in a serial path; a voltage supply coupled to the plurality of LED arrays; a plurality of current sources selectively coupled to the LED arrays, each of the current sources being switchable between a current regulating state and an open state; and a controller that outputs at least one control signal. The controller, the at least one switch and current sources cooperate together such that: when the voltage of the voltage source is below the at least one reference voltage, and/or when a predetermined level of current passes through the one or more current sources, at least one switch is closed and one or more associated current sources are controlled so as to break the serial path into one or more parallel paths each including less than all of the LED arrays.

摘要翻译： 一种LED阵列切换装置，包括：以串行路径排列的多个LED阵列; 耦合到所述多个LED阵列的电压源; 选择性地耦合到LED阵列的多个电流源，每个电流源可在电流调节状态和打开状态之间切换; 以及输出至少一个控制信号的控制器。 所述控制器，所述至少一个开关和电流源协同工作，使得：当所述电压源的电压低于所述至少一个参考电压时，和/或当预定电流通过所述一个或多个电流源时， 关闭至少一个开关并且控制一个或多个相关联的电流源，以便将串行路径分解成一个或多个并行路径，每个并行路径包括少于所有LED阵列。