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    • 14. 发明申请
    • HIGH MANGANESE HIGH STRENGTH STEEL SHEETS WITH EXCELLENT CRASHWORTHINESS AND METHOD FOR MANUFACTURING OF IT
    • 具有优异冲击韧性的高锰钢高强度钢板及其制造方法
    • US20090074605A1
    • 2009-03-19
    • US12298959
    • 2007-12-24
    • Sung Kyu KimKwang Geun ChinIl-Ryoung Sohn
    • Sung Kyu KimKwang Geun ChinIl-Ryoung Sohn
    • C22C38/04C21D8/02B21B1/00
    • C22C38/04C22C38/06
    • There are provided a high-workability high strength steel sheet with excellent workability due to the high elongation and excellent crashworthiness due to the high yield strength, and a method for manufacturing of it. The high manganese steel sheet includes, by weight: carbon (C): 0.2 to 1.5%, manganese (Mn): 10 to 25%, aluminum (Al): 0.01 to 3.0%, phosphorus (P) 0.03% or less, sulfur (S): 0.03% or less, nitrogen (N): 0.040% or less, at least one selected from the group consisting of silicon (Si): 0.02 to 2.5%, titanium (Ti): 0.01 to 0.10% and niobium (Nb): 0.01 to 0.10%, and the balance of Fe and other inevitable impurities. The high manganese steel sheet may be a hot-rolled steel sheet, a cold-rolled steel sheet, or a plated steel sheet, and is suitable for elaborate internal sheets as well as structural members of a car body since it has press workability due to the high elongation and high strain hardening index. Also, the high manganese steel sheet may be used for parts such as a front side member of an automobile since, among its characteristics, the steel sheet has an excellent impact absorbing ability.
    • 提供了由于高屈服强度而由于高伸长率和优异的耐冲击性而具有优异的可加工性的高加工性高强度钢板及其制造方法。 高锰钢板包括:碳(C):0.2〜1.5%,锰(Mn):10〜25%,铝(Al):0.01〜3.0%,磷(P)0.03%以下,硫 (S):0.03%以下,氮(N):0.040%以下,选自硅(Si):0.02〜2.5%,钛(Ti):0.01〜0.10%和铌( Nb):0.01〜0.10%,余量为Fe等不可避免的杂质。 高锰钢板可以是热轧钢板,冷轧钢板或镀覆钢板,并且适用于精密的内部板材以及车身的结构构件,因为它具有由于 高伸长率和高应变硬化指数。 此外,高锰钢板也可以用于汽车的前侧部件等部件,因为其特征在于具有优异的冲击吸收能力。
    • 15. 发明申请
    • Image display system
    • 图像显示系统
    • US20080123173A1
    • 2008-05-29
    • US11586822
    • 2006-10-26
    • Sung Kyu Kim
    • Sung Kyu Kim
    • G02B27/26
    • G02B27/225G02B27/26
    • Disclosed is a display system capable of providing two and three-dimensional images. The display system comprises display means; a first polarizer located at a distance from a front surface of the display means; a display panel provided to a front of the first polarizer and regulating a polarization direction of light having passed through the first polarizer; and a second polarizer located at a distance from a front surface of the display panel, wherein each pixel of the second polarizer has a size of dividing a unit pixel of the display panel into two parts and two polarization states of each pixel are orthogonal to each other. By applying the structure, it is possible to manufacture a display system having a resolution increased by two times, as compared to a conventional display system. Accordingly, when developing a high resolution image display system requiring enormous development costs, it is possible to manufacture it using the two types of display systems. As a result, it is possible to inexpensively manufacture a high resolution and high definition display system. Further, it is possible to provide a three-dimensional image without decreasing the resolution of the display system, and to provide the multi-view points twice as many as the conventional multi-view points, without decreasing the unit view point resolution of the three-dimensional image.
    • 公开了能够提供二维和三维图像的显示系统。 显示系统包括显示装置; 位于距显示装置的前表面一定距离处的第一偏振器; 显示面板,其设置在所述第一偏振片的前方,并调节通过所述第一偏振片的光的偏振方向; 以及位于距显示面板的前表面一定距离处的第二偏振器,其中第二偏振器的每个像素具有将显示面板的单位像素分成两部分的大小,并且每个像素的两个偏振状态与每个像素正交 其他。 通过应用该结构,与传统的显示系统相比,可以制造分辨率提高了两倍的显示系统。 因此,当开发需要巨大开发成本的高分辨率图像显示系统时,可以使用两种类型的显示系统来制造它。 结果,可以廉价地制造高分辨率和高清晰度的显示系统。 此外,可以提供三维图像而不降低显示系统的分辨率,并且提供与常规多视点相同数量的多视点,而不会降低三维图像的单位视点分辨率 维度图像。
    • 17. 发明授权
    • Apparatus for diagnosing DC-DC converter and method thereof
    • 用于诊断DC-DC转换器的装置及其方法
    • US08587291B2
    • 2013-11-19
    • US12959769
    • 2010-12-03
    • Sung Kyu KimJaewon LeeTae Hwan ChungKi Jong LeeJong Kyung Lim
    • Sung Kyu KimJaewon LeeTae Hwan ChungKi Jong LeeJong Kyung Lim
    • G01R19/18
    • G01R31/40H02M1/32
    • A diagnosis device and method of a voltage transformer can include a current transformer disposed at one side of an output port for generating a current variation according to an on/off operation of a power switch element; a first current detector configured to detect a forward direction current from the current transformer; a second current detector configured to detect a reverse direction current from the current transformer; a first voltage transformer configured to transform the forward direction current detected from the first current detector to a forward direction voltage; a second voltage transformer configured to transform the reverse direction current detected from the second current detector to a reverse direction voltage; and a diagnosis portion for comparing the forward direction voltage with the reverse direction voltage to determine whether or not an offset is formed.
    • 电压互感器的诊断装置和方法可以包括设置在输出端口一侧的电流互感器,用于根据功率开关元件的接通/断开操作产生电流变化; 第一电流检测器,被配置为检测来自电流互感器的正向电流; 第二电流检测器,被配置为检测来自电流互感器的反向电流; 第一电压变压器,被配置为将从第一电流检测器检测到的正向电流变换为正向电压; 被配置为将从第二电流检测器检测的反向电流变换为反向电压的第二电压互感器; 以及诊断部分,用于将正向电压与反向电压进行比较,以确定是否形成偏移。