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    • 91. 发明授权
    • Module for controlling light emitting diode current for selective feedback, apparatus and method for driving light emitting diodes using the same
    • 用于控制用于选择反馈的发光二极管电流的模块,用于驱动使用其的发光二极管的装置和方法
    • US08115413B2
    • 2012-02-14
    • US12629552
    • 2009-12-02
    • Seung Kon KongBo Hyun HwangJung Hyun KimJung Sun Kwon
    • Seung Kon KongBo Hyun HwangJung Hyun KimJung Sun Kwon
    • G05F1/00
    • H05B33/0812H05B33/0824Y02B20/345
    • The present invention provides a module for controlling an LED current for selective feedback, an apparatus and a method for driving LEDs using the same. The module for controlling the LED current, which is connected to a plurality of LED channels receiving driving powers supplied from at least one DC/DC converter and controls currents of the LED channels through a constant current, the LED current controlling module includes: an operation mode selector for selecting an operation mode according to an inputted enable signal level; a channel divider for dividing a plurality of LED channels into at least one group according to the selected operation mode; and a minimum voltage selector for selecting an LED channel with a minimum voltage, obtained by comparing voltages detected from each of lower ends of the LED channels included in each of one or more divided groups.
    • 本发明提供一种用于控制用于选择反馈的LED电流的模块,用于驱动使用该LED的LED的装置和方法。 用于控制LED电流的模块,其连接到从至少一个DC / DC转换器提供的驱动功率的多个LED通道,并通过恒定电流来控制LED通道的电流,LED电流控制模块包括: 模式选择器,用于根据输入的使能信号电平选择操作模式; 用于根据选择的操作模式将多个LED通道分成至少一个组的通道分配器; 以及用于选择具有最小电压的LED通道的最小电压选择器,其通过比较包括在一个或多个分组中的每一个中的LED通道的每个下端检测到的电压而获得。
    • 99. 发明授权
    • Semiconductor device
    • 半导体器件
    • US08729956B2
    • 2014-05-20
    • US13030372
    • 2011-02-18
    • Jung-hyun Kim
    • Jung-hyun Kim
    • G05F1/10
    • H02M3/07
    • A semiconductor device is provided, including a charge-pumping unit configured to charge-pump power voltage in every period of a pumping clock to generate pumping voltage, a first voltage level detection unit configured to detect a maximum voltage level of the generated pumping voltage, a second voltage level detection unit configured to detect a minimum voltage level of the generated pumping voltage, and a pumping clock generating unit configured to generate the pumping clock, the pumping clock having a frequency that is adjusted in response to an output signal of the first and the second voltage level detection units.
    • 提供了一种半导体器件,包括:电荷泵单元,被配置为对泵浦时钟的每个周期中的电源电压进行充电以产生泵浦电压;第一电压电平检测单元,被配置为检测所产生的泵浦电压的最大电压电平; 第二电压电平检测单元,被配置为检测所产生的泵浦电压的最小电压电平;以及泵送时钟产生单元,被配置为产生所述泵浦时钟,所述泵浦时钟具有响应于所述第一 和第二电压电平检测单元。