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    • 12. 发明授权
    • Method for compensating voltage drop of display device, system for voltage drop compensation and display device including the same
    • 用于补偿显示装置的压降的方法,用于电压降补偿的系统和包括其的显示装置
    • US08232987B2
    • 2012-07-31
    • US12505392
    • 2009-07-17
    • Kyong-Tae ParkYoung-Il Kim
    • Kyong-Tae ParkYoung-Il Kim
    • G06F3/038G09G5/00
    • G09G3/2007
    • The present invention relates to a method for compensating voltage drop of a display device, a system for voltage drop compensation, and a display device including the same. A method for compensating a voltage drop of a display device including a display panel, a maximum compensation voltage table MLEC LUT for voltage compensation when a voltage drop is a maximum in the display panel, and a voltage drop coefficient table LEC LUT representing voltage drop coefficients with respect to total output currents during one frame according to an embodiment of the present invention comprises: receiving an input image signal; gamma-converting the input image signal to obtain a pre-compensation data voltage; obtaining a first total output current flowing in all pixels PX of the display panel during one frame based on the input image signal; obtaining a first voltage drop compensation voltage V_LEC based on the voltage drop coefficient table LEC LUT and the maximum compensation voltage table MLEC LUT; and adding the first voltage drop compensation voltage V_LEC to the pre-compensation data voltage to obtain the post-compensation data voltage.
    • 本发明涉及一种用于补偿显示装置的电压降的方法,一种用于电压降补偿的系统,以及包括该方法的显示装置。 一种用于补偿包括显示面板的显示装置的电压降的方法,当显示面板中的电压降最大时,用于电压补偿的最大补偿电压表MLEC LUT以及表示电压降系数的压降系数表LEC LUT 根据本发明的实施例,相对于一帧期间的总输出电流包括:接收输入图像信号; 伽马转换输入图像信号以获得预补偿数据电压; 基于所述输入图像信号获得在一帧期间在所述显示面板的所有像素PX中流动的第一总输出电流; 基于电压降系数表LEC LUT和最大补偿电压表MLEC LUT获得第一电压降补偿电压V_LEC; 并将第一电压降补偿电压V_LEC添加到预补偿数据电压以获得补偿后数据电压。
    • 15. 发明授权
    • Apparatus and method for automatic gain control of mobile station in OFDM system
    • OFDM系统中移动台自动增益控制的装置及方法
    • US08194804B2
    • 2012-06-05
    • US12088262
    • 2006-09-29
    • Ki-Seok KimYoung-Il Kim
    • Ki-Seok KimYoung-Il Kim
    • H04L27/08
    • H04L27/2647H04L27/261H04L27/3809
    • An automatic gain control apparatus and method of a mobile station in an OFDM system are provided. The method includes identifying a preamble section and a data symbol section in a received frame signal; when a current symbol is the preamble section, measuring a power value of a preamble signal, comparing the measured power value of the preamble signal and a threshold value, and amplifying the received frame signal based on a predetermined gain; when a data symbol section includes a pilot carrier, measuring an average power value of the pilot carrier in the data symbol, comparing the measured average power value and the threshold value, and amplifying the received frame signal based on a predetermined gain; and when the data symbol section includes no pilot carrier, maintaining an existing gain, or performing an automatic gain control operation according to a gain estimated by using the pilot carrier during the data symbol section.
    • 提供了OFDM系统中的移动台的自动增益控制装置和方法。 该方法包括在接收到的帧信号中识别前导码部分和数据符号部分; 当当前符号是前导码部分时,测量前同步信号的功率值,比较前导信号的测量功率值和阈值,并根据预定增益放大接收到的帧信号; 当数据符号部分包括导频载波时,测量数据符号中的导频载波的平均功率值,比较测得的平均功率值和阈值,并根据预定增益放大接收到的帧信号; 并且当数据符号部分不包括导频载波,维持现有增益时,或者根据在数据符号部分期间使用导频载波估计的增益执行自动增益控制操作。