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    • 19. 发明申请
    • Frequency synchronization device for LCD lamps
    • 液晶灯频率同步装置
    • US20050067978A1
    • 2005-03-31
    • US10670729
    • 2003-09-26
    • Tim YuMark YangShih-Chung Huang
    • Tim YuMark YangShih-Chung Huang
    • H05B41/282H05B41/392H05B37/02
    • H05B41/2824H05B41/2822H05B41/3927
    • A frequency synchronization device for a large LCD having a plurality of lamps as a background light source is disclosed. The device comprises a power amplification unit arranged in loop, each power amplification unit being electrically coupled to one of the lamps, adapted to generate a synchronous signal, and adapted to send the synchronous signal to the coupled lamp for causing the lamps to operate at the same frequency; a plurality of current sampling elements each electrically coupled to one of the lamps for sampling current thereof; and control means comprising a control element and a diode, the control means being electrically coupled to current sampling elements so as to stabilize the current of the lamps. The connection and circuitry of the device are much simplified and improved.
    • 公开了一种具有多个灯作为背景光源的大型LCD的频率同步装置。 该设备包括一个环路布置的功率放大单元,每个功率放大单元电耦合到灯之一,适于产生同步信号,并且适于将同步信号发送到耦合的灯,以使灯在 频率相同 多个电流采样元件,每个电流采样元件电耦合到一个灯,用于对其电流进行采样; 以及包括控制元件和二极管的控制装置,所述控制装置电耦合到电流采样元件,以稳定灯的电流。 设备的连接和电路被大大简化和改进。