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    • 71. 发明申请
    • HIGH RESOLUTION TIME-OF-FLIGHT DISTANCE MEASUREMENT DEVICE BASED ON FEMTOSECOND LASER
    • 基于FEMTOSECOND激光器的高分辨率飞行距离测量装置
    • US20120086932A1
    • 2012-04-12
    • US13253484
    • 2011-10-05
    • Seung Woo KIMJoo Hyung LeeYoung Jin Kim
    • Seung Woo KIMJoo Hyung LeeYoung Jin Kim
    • G01C3/08
    • G01S7/4865G01B11/026G01S7/4811G01S17/10
    • Disclosed is a high resolution time-of-flight distance measurement device based on a femtosecond laser, including a femtosecond laser light source, a polarization beam splitter, a balanced optical cross-correlator in which second harmonic pulses are generated using reference light and measurement light, wherein the second harmonic pulse that was primarily generated is incident on a first photodetector and the second harmonic pulse that was secondarily generated is incident on a second photodetector, so that a difference in intensity of the second harmonic pulses is output, thus resolving the time interval of the pulse laser, a controller for controlling the repetition rate of the femtosecond laser, and a converter for measuring the repetition rate of the femtosecond laser controlled so that the pulses uniformly overlap by means of the controller, using a frequency counter traceable to a time/frequency standard, so that a measured value is converted into distance information.
    • 公开了一种基于飞秒激光器的高分辨率飞行时间距离测量装置,包括飞秒激光光源,偏振分束器,平衡光交叉相关器,其中使用参考光和测量光产生二次谐波脉冲 其中主要产生的二次谐波脉冲入射到第一光电检测器上,并且二次产生的二次谐波脉冲入射到第二光电检测器上,从而输出二次谐波脉冲的强度差,从而解决时间 脉冲激光器的间隔,用于控制飞秒激光器的重复率的控制器,以及用于测量飞秒激光器的重复率的转换器,其被控制,使得脉冲通过控制器均匀地重叠,使用可追溯到 时间/频率标准,使得测量值被转换成距离信息。
    • 73. 发明申请
    • REFRIGERATOR
    • 冰箱
    • US20100319387A1
    • 2010-12-23
    • US12864970
    • 2008-10-01
    • Hong-Hee ParkTae-Hee LeeJoon-Hwan OhYoung-Jin KimHo-Youn Lee
    • Hong-Hee ParkTae-Hee LeeJoon-Hwan OhYoung-Jin KimHo-Youn Lee
    • F25C1/00F25D17/04F25D11/00
    • F25D17/065F25C1/08F25C2400/10F25D2317/062F25D2317/0665
    • Provided is a refrigerator configured to improve the structure of an ice-making chamber provided to a refrigerator door, thereby efficiently supplying cool air into the ice-making chamber. The refrigerator includes a main body including a storage chamber, a refrigerator door rotatably coupled to the main body, an ice-making device provided to the refrigerator door and configured to make ice, an ice-making unit provided to the ice-making device and including a cool air introduction part, a freezing core vertically arranged in the ice-making unit and cooled by cool air, and an ice tray configured to receive at least one portion of the freezing core therein, wherein the cool air introduction part is provided on an upper side of the freezing core. Cool air is efficiently introduced into the ice-making chamber, thereby increasing the amount of ice made.
    • 提供一种冰箱,其被配置为改善设置在冰箱门上的制冰室的结构,从而有效地将冷空气供给到制冰室。 冰箱包括主体,其包括存储室,可旋转地连接到主体的冰箱门,设置到冰箱门并构造成制冰的制冰装置,提供给制冰装置的制冰单元和 包括冷空气引入部分,垂直地布置在制冰单元中并由冷空气冷却的冷冻芯,以及构造成在其中容纳冷冻芯的至少一部分的冰托,其中所述冷空气引入部分设置在 冷冻核心的上侧。 冷空气被有效地引入制冰室,从而增加制冰量。
    • 75. 发明授权
    • Elimination of DC offset in analog baseband circuit with minimized transients
    • 以最小的瞬变消除模拟基带电路中的直流偏移
    • US07760824B2
    • 2010-07-20
    • US11788411
    • 2007-04-20
    • Jae-Wan KimYoung-Jin KimJae-Heon Lee
    • Jae-Wan KimYoung-Jin KimJae-Heon Lee
    • H04L27/08
    • H03G3/3052H03G1/04
    • An analog baseband circuit includes first and second DC (direct current) offset cancellers and an offset canceller controller. The first DC offset canceller includes a first filter and a first PGA (programmable gain amplifier) with a first gain step for eliminating a first dc component from an input baseband signal. The second DC offset canceller includes a second filter and a second PGA with a second gain step less than the first gain step for eliminating a second dc component from an output of the first DC offset canceller. The offset canceller controller controls the first and second filters to operate in a fast mode when a gain of the first PGA is changed.
    • 模拟基带电路包括第一和第二DC(直流)偏移消除器和偏移消除器控制器。 第一DC偏移消除器包括第一滤波器和第一PGA(可编程增益放大器),其具有用于从输入基带信号消除第一直流分量的第一增益步骤。 第二DC偏移消除器包括第二滤波器和具有小于第一增益步长的第二增益步长的第二PGA,用于从第一DC偏移消除器的输出消除第二直流分量。 当第一PGA的增益改变时,偏移消除器控制器控制第一和第二滤波器以快速模式操作。