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1.发明授权
公开(公告)号：EP3233571B1
公开(公告)日：2018-11-21
申请号：EP15832933.4
申请日：2015-12-14
申请人： FCA US LLC
CPC分类号： H05B33/0815 , B60Q3/18 , H05B33/0845
摘要： A dimming circuit for an indicator switch has a control input, a dimming state and a non-dimming state. The dimming circuit is responsive to the presence of a backlight PWM signal at the control input of the dimming circuit to switch to the dimming state and responsive to the absence of the backlight PWM signal at the control input of the dimming circuit to switch to the non-dimming state. In the dimming state a high resistance of the dimming circuit is coupled in series with the indicator LED and a LED drive output of the function control module and in the non-dimming state a low resistance of the dimming circuit is coupled in series with the indicator LED and the LED drive output of the function control module. The high resistance has a resistance higher than the low resistance.
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2.发明公开TWO STAGE INDICATOR DIMMING CIRCUIT CONTROLLED BY PWM BACKLIGHTING BACK FEED AND BACKLIGHT CONTROL 审中-公开由PWM背光控制背光源和背光控制的两级显示调光电路
公开(公告)号：EP3233571A2
公开(公告)日：2017-10-25
申请号：EP15832933.4
申请日：2015-12-14
申请人： FCA US LLC
CPC分类号： H05B33/0815 , B60Q3/18 , H05B33/0845
摘要： A dimming circuit for an indicator switch has a control input, a dimming state and a non-dimming state. The dimming circuit is responsive to the presence of a backlight PWM signal at the control input of the dimming circuit to switch to the dimming state and responsive to the absence of the backlight PWM signal at the control input of the dimming circuit to switch to the non-dimming state. In the dimming state a high resistance of the dimming circuit is coupled in series with the indicator LED and a LED drive output of the function control module and in the non-dimming state a low resistance of the dimming circuit is coupled in series with the indicator LED and the LED drive output of the function control module. The high resistance has a resistance higher than the low resistance.
摘要翻译： 用于指示器开关的调光电路具有控制输入，调光状态和非调光状态。 调光电路响应于在调光电路的控制输入处的背光PWM信号的存在以切换到调光状态并且响应于在调光电路的控制输入处不存在背光PWM信号以切换到非调光电路 - 调光状态。 在调光状态下，调光电路的高电阻与功能控制模块的指示器LED和LED驱动输出串联耦合，并且在非调光状态下，调光电路的低电阻与指示器串联耦合 LED和功能控制模块的LED驱动输出。 高电阻具有比低电阻更高的电阻。
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