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US08773039B2 Discharge lamp system, method and apparatus of controlling the transition time of discharge lamp current change 有权
放电灯系统，控制放电灯电流变化过渡时间的方法和装置

Discharge lamp system, method and apparatus of controlling the transition time of discharge lamp current change
Abstract:
A method and a device for controlling a discharge Lamp, and a discharge lamp system are disclosed herein. The method includes the operations of: when the lamp current changes, determining a percentage of change of the lamp current according to a synchronous signal and obtaining a second lamp current after a discharge lamp current changes according to the percentage of change of the lamp current and a first lamp current; obtaining a modulating signal according to a current difference between the first lamp current and the second lamp current; and generating a pulse voltage signal according to the modulating signal. The pulse voltage signal transits from a first voltage to a second voltage during the time period when the lamp current is transited from a first lamp current to a second lamp current during a transition time.
Abstract(Chinese):

本文公开了一种用于控制放电灯的方法和装置以及放电灯系统。 该方法包括以下操作：当灯电流变化时，根据同步信号确定灯电流变化的百分比，并且在放电灯电流根据灯电流的变化百分比变化后获得第二灯电流，并且 第一灯电流; 根据第一灯电流和第二灯电流之间的电流差获得调制信号; 并根据调制信号产生脉冲电压信号。 在灯电流在转换期间从第一灯电流转换到第二灯电流的时间段期间，脉冲电压信号从第一电压转换到第二电压。

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