Driving voltage controller for light-emitting source
    1.
    发明申请
    Driving voltage controller for light-emitting source 有权
    用于发光源的驱动电压控制器

    公开(公告)号:US20050258781A1

    公开(公告)日:2005-11-24

    申请号:US11115179

    申请日:2005-04-27

    CPC classification number: H05B39/047 Y02B20/144

    Abstract: An initial driving voltage fixing the desired luminance of a light-emitting source is set at a voltage lower than that of a power supply; the light-emitting source is driven by applying a light-emitting source driving voltage at the initial driving voltage; and then, a CPU determines whether or not the power supply voltage has dropped down the initial driving voltage. When the power supply voltage has become lower than the initial driving voltage, the CPU applies the light-emitting source driving voltage to the source at the power supply voltage, and holds the undervoltage information of the power supply that the power supply voltage has dropped. When the CPU determined that the power supply voltage had returned higher than or equal to the initial driving voltage after holding the undervoltage information, the CPU gradually returns the light-emitting source driving voltage to the initial driving voltage.

    Abstract translation: 将发光源的期望亮度固定的初始驱动电压设定为低于电源的电压的电压; 通过以初始驱动电压施加发光源驱动电压来驱动发光源; 然后,CPU判定电源电压是否下降了初始驱动电压。 当电源电压低于初始驱动电压时,CPU以电源电压向发光源施加发光源驱动电压,并保持电源电压下降的电源的欠压信息。 当CPU在保持欠压信息之后确定电源电压已经恢复到初始驱动电压以上时,CPU逐渐将发光源驱动电压返回到初始驱动电压。

    Driving voltage controller for light-emitting source
    4.
    发明授权
    Driving voltage controller for light-emitting source 有权
    用于发光源的驱动电压控制器

    公开(公告)号:US07332870B2

    公开(公告)日:2008-02-19

    申请号:US11115179

    申请日:2005-04-27

    CPC classification number: H05B39/047 Y02B20/144

    Abstract: An initial driving voltage fixing a desired luminance of a light-emitting source is set at a voltage lower than that of a power supply; the light-emitting source is driven by applying a light-emitting source driving voltage at the initial driving voltage; and then, a CPU determines whether or not the power supply voltage has dropped down the initial driving voltage. When the power supply voltage has become lower than the initial driving voltage, the CPU applies the light-emitting source driving voltage to the source at the power supply voltage, and holds an undervoltage information of the power supply that the power supply voltage has dropped. When the CPU detennined that the power supply voltage had returned higher than or equal to the initial driving voltage after holding the undervoltage information, the CPU gradually returns the light-emitting source driving voltage to the initial driving voltage.

    Abstract translation: 将发光源的期望亮度固定的初始驱动电压设定为低于电源的电压的电压; 通过以初始驱动电压施加发光源驱动电压来驱动发光源; 然后,CPU判定电源电压是否下降了初始驱动电压。 当电源电压低于初始驱动电压时,CPU以电源电压向发光源施加发光源驱动电压,并保持电源电压下降的电源的欠压信息。 当CPU确定在保持欠压信息之后电源电压已经恢复到初始驱动电压以上时,CPU逐渐将发光源驱动电压返回到初始驱动电压。

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