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    • 32. 发明申请
    • Charge pump circuits and methods for the same
    • 电荷泵电路及方法相同
    • US20060132220A1
    • 2006-06-22
    • US11270648
    • 2005-11-10
    • Seung-Won Lee
    • Seung-Won Lee
    • G05F1/10
    • H02M3/073H02M2003/075
    • A charge pump circuit may include a plurality of charge pump cells. Each charge pump cell may further include an output node for supplying charge, a pumping node for receiving a clock signal and a pumping capacitor, which may be connected between the output node and the pumping node, for storing the charge and may repeat a charge or discharge operation and/or a pre-charge operation in response to a plurality of clock signals. In the pre-charge operation, a unidirectional charge supply may be performed from a lower voltage output node to a higher voltage output node.
    • 电荷泵电路可以包括多个电荷泵电池。 每个电荷泵单元还可以包括用于提供电荷的输出节点,用于接收时钟信号的泵浦节点和可连接在输出节点和泵送节点之间的泵浦电容器,用于存储电荷,并且可以重复充电或 放电操作和/或响应于多个时钟信号的预充电操作。 在预充电操作中,可以从较低电压输出节点到较高电压输出节点执行单向电荷供应。
    • 35. 发明申请
    • Apparatus and method for detecting a pitch for a voice signal in a voice codec
    • 用于检测语音编解码器中的语音信号音调的装置和方法
    • US20050021325A1
    • 2005-01-27
    • US10883968
    • 2004-07-06
    • Jeong-Wook SeoHwan KimYang-Hyun LeeKeun-Sung BaeSi-Ho KimSeung-Won Lee
    • Jeong-Wook SeoHwan KimYang-Hyun LeeKeun-Sung BaeSi-Ho KimSeung-Won Lee
    • G10L19/00G10L11/04G10L19/02
    • G10L25/90G10L19/02
    • An apparatus and method for detecting a pitch of a voice signal in a codec. The pitch detection apparatus for use in a vocoder includes a bandwidth expansion unit for performing an inverse-filtering process and a bandwidth expansion process on an input voice signal, and generating a bandwidth-expanded residual signal; a pitch analyzer for calculating a time autocorrelation function and a spectral autocorrelation function of the bandwidth-expanded residual signal, mixing the time autocorrelation function and the spectral autocorrelation function, comparing an autocorrelation function calculated by dividing a pitch acquired from the mixed autocorrelation function by an integer multiple with another autocorrelation function acquired at a predetermined pitch, and determining a point or position having the highest value to be an open-loop pitch; a pitch smoothing unit for smoothing the open-loop pitch using an average pitch value when the detected open-loop pitch is outside of a predetermined range of a previous frame; and a pitch quantizer for quantizing the smoothened open-loop pitch into predetermined levels, and generating the quantized result.
    • 一种用于检测编解码器中的语音信号音调的装置和方法。 在声码器中使用的音调检测装置包括用于对输入语音信号进行逆滤波处理和带宽扩展处理的带宽扩展单元,并生成带宽扩展残差信号; 用于计算带宽扩展残差信号的时间自相关函数和频谱自相关函数的音调分析器,混合时间自相关函数和频谱自相关函数,将通过将从混合自相关函数获得的音调除以一个所计算的自相关函数与 具有以预定间距获取的另一自相关函数的整数倍,并且将具有最高值的点或位置确定为开环间距; 音调平滑单元,用于当检测到的开环音调超出前一帧的预定范围时,使用平均音调值来平滑开环音调; 以及音调量化器,用于将平滑的开环音调量化为预定电平,并产生量化结果。
    • 38. 发明授权
    • Grating-assisted co-directional vertical coupler optical filter having well-suppressed sidelobe characteristics and method of fabricating the same
    • 具有良好抑制旁瓣特性的光栅辅助同向垂直耦合器滤光器及其制造方法
    • US06597838B1
    • 2003-07-22
    • US09135730
    • 1998-08-18
    • Chan Yong ParkSeung Won LeeDug Bong KimKwang Ryong OhHong Man Kim
    • Chan Yong ParkSeung Won LeeDug Bong KimKwang Ryong OhHong Man Kim
    • G02B634
    • G02B6/12002G02B6/12007G02B2006/12107G02B2006/12147
    • The present invention relates to an optical filter whose a sidelobe disturbing a characteristic of an optical filter by weighting an optical coupling efficiency between waveguides is controlled upon applying a selective area growth method in a wavelength selective variable semiconductor optical filter and method of fabricating the same. The present invention can control the thickness of growth layer selectively by controlling the width of the dielectric thin film mask whose the growth is not achieved in the selective area growth method, can control the distance between two waveguides of the wavelength selective variable semiconductor optical filter by applying the result on the distance control between two waveguides. Accordingly, there can be changed an optical coupling efficiency between two waveguides spatially. Because the sidelobe characteristics is largely improved if the distance between two waveguides is controlled temporarily to be corresponded to one period of Hamming function, there can be fabricated a semiconductor optical filter whose the characteristic is very excellent when applying the present invention.
    • 本发明涉及一种滤光器,其通过在波长选择性可变半导体光学滤波器中应用选择性区域增长方法及其制造方法来控制通过对波导之间的光耦合效率进行加权来干扰滤光器的特性的旁瓣。 本发明可以通过控制在选择区域生长方法中未实现生长的电介质薄膜掩模的宽度来选择性地控制生长层的厚度,可以通过以下方式控制波长选择性可变半导体光学滤波器的两个波导之间的距离 将结果应用于两个波导之间的距离控制。 因此,可以在空间上改变两个波导之间的光耦合效率。 因为如果临时控制两个波导之间的距离以对应于汉明功能的一个周期,则旁瓣特性被大大改善,所以可以制造当应用本发明时其特性非常好的半导体滤光器。
    • 39. 发明申请
    • DRIVER IC DEVICE INCLUDING CORRECTION FUNCTION
    • US20190197980A1
    • 2019-06-27
    • US16313082
    • 2018-03-23
    • Seung Won Lee
    • Seung Won Lee
    • G09G3/36
    • A driver IC device includes a correction function having a unit-block setting unit for dividing pixels of a display panel into preset units so as to set the same as a plurality of unit-blocks; a correction route (LUT) setting unit for setting a LUT having a plurality of sub-regions arranged in the same form in response to an arrangement of the pixels included in the unit-blocks set through the unit-block setting unit; a storage unit for storing the LUT set through the LUT setting unit, and storing respective gain values and offset values for the plurality of unit-blocks set through the unit-block setting unit; a changing unit for changing an input value (input gray) inputted to the pixels of the display panel, by using the gain values and offset values stored in the storage unit; and a correction output unit for generating a correction output value (output gray) of the pixels in the unit-blocks of the display panel by using a change value obtained through the changing unit and a coordinate value of the LUT set through the LUT setting unit.