发明授权
- 专利标题： Dimming method and system thereof
- 专利标题（中）： 调光方法及其系统
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申请号： US11288242申请日： 2005-11-29
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公开(公告)号： US07368977B2公开(公告)日： 2008-05-06
- 发明人: Wei-Hsin Wei , Shui-Mu Lin , Chien-Sheng Chen , Tsung-Wei Huang , Chin-Chiang Yeh , Chin-Tsung Chen
- 申请人： Wei-Hsin Wei , Shui-Mu Lin , Chien-Sheng Chen , Tsung-Wei Huang , Chin-Chiang Yeh , Chin-Tsung Chen
- 申请人地址： TW Hsinchu Hsien
- 专利权人： Richtek Technology Corp.
- 当前专利权人： Richtek Technology Corp.
- 当前专利权人地址： TW Hsinchu Hsien
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： TW94119684A 20050614
- 主分类号： G05F1/10
- IPC分类号： G05F1/10
摘要：
A dimming method for LED driving circuit is proposed. By temporary switching a pin that is originally used for the input/output of other electric signals to a high impedance node, the dimming control signal may be inputted to dim LEDs. The dimming method comprises the steps of: floating the pin every a period of time to pull the pin's voltage being equal to the dimming control signal; detecting the pin's voltage; and retrieving the dimming control signal in accordance with the detected pin's voltage and thereafter dimming the LEDs.
公开/授权文献
- US20060279565A1 Dimming method and system thereof 公开/授权日：2006-12-14
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