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    • 10. 发明申请
    • BACKLIGHT SYSTEM HAVING A LAMP CURRENT BALANCE AND FEEDBACK MECHANISM AND RELATED METHOD THEREOF
    • 具有灯电流平衡和反馈机构的背光系统及其相关方法
    • US20090184656A1
    • 2009-07-23
    • US12053624
    • 2008-03-24
    • Yen-Chen HuangChia-Hung SunHuang-Ti LinYuan-Pin Cho
    • Yen-Chen HuangChia-Hung SunHuang-Ti LinYuan-Pin Cho
    • H05B37/02
    • H05B41/2855H05B41/282Y02B20/183
    • A lamp current balance and feedback system and related method are disclosed for balancing the input and output currents of a lamp by making use of a lamp current balance and feedback mechanism. The operation of the lamp current balance and feedback mechanism includes coupling the input current of the lamp for generating a first balance current by a first transformer, coupling the output current of the lamp for generating a second balance current by a second transformer, coupling the first and second transformers for substantially equalizing the first and second balance currents, generating a feedback signal based on the first or second balance current by a feedback circuit, generating a pulse width modulation signal based on the feedback signal by a pulse width modulation signal generation circuit, and driving the input and output currents of the lamp based on the pulse width modulation signal by a driving circuit.
    • 公开了一种灯电流平衡和反馈系统及相关方法,用于通过利用灯电流平衡和反馈机构平衡灯的输入和输出电流。 灯电流平衡和反馈机构的操作包括耦合用于由第一变压器产生第一平衡电流的灯的输入电流,通过第二变压器耦合用于产生第二平衡电流的灯的输出电流,将第一 以及第二变压器,用于基本上均衡所述第一和第二平衡电流,通过反馈电路产生基于所述第一或第二平衡电流的反馈信号,通过脉宽调制信号产生电路产生基于所述反馈信号的脉宽调制信号, 并且通过驱动电路基于脉宽调制信号驱动灯的输入和输出电流。