公开(公告)号：US08391720B2

公开(公告)日：2013-03-05

申请号：US12846351

申请日：2010-07-29

申请人： Il-Soon Jang ,  Dae-Ho Kim ,  Sang-Kyu Lim ,  Tae-Gyu Kang

发明人： Il-Soon Jang ,  Dae-Ho Kim ,  Sang-Kyu Lim ,  Tae-Gyu Kang

IPC分类号： H04B10/00

CPC分类号： H04B10/116 ,  H04B10/1149 ,  H04J14/02

摘要： There is disclosed a visible light communication technology capable of intuitively recognizing a transmission speed, an alignment status, a communication status, or a transmission rate. A visible light communication apparatus according to an embodiment of the present invention includes: a light source selecting unit selecting at least one light source of a plurality of light sources generating lights having different wavelengths by considering intuitive information distinguished depending on a wavelength in a visible light band; and a visible light communication unit performing visible light communication by at least one selected light source to allow the intuitive information to be recognized by a color corresponding to at least one selected light source. Accordingly, a user using the visible light communication can intuitively know an optimal communication status or transmission speed.

公开(公告)号：US08055161B2

公开(公告)日：2011-11-08

申请号：US11954701

申请日：2007-12-12

申请人： Dae-Ho Kim

发明人： Dae-Ho Kim

IPC分类号： G03G15/08

CPC分类号： G03G15/0893 ,  G03G15/0877 ,  G03G2215/0822 ,  G03G2215/0838

摘要： An image forming apparatus, a developing unit thereof and a method of controlling the developing unit. The image forming apparatus includes a photosensitive body on which an electrostatic latent image is formed, a light scanning unit which scans a beam onto the photosensitive body, a developing unit which includes a housing having an agitating space and a supply space, the agitating space and the supply space communicating with each other through two gates to circulate a developer, an agitating auger rotatably mounted in the agitating space to transfer the developer, a supply auger rotatably mounted in the supply space to transfer the developer, and a magnetic roller which receives the developer by the supply auger and adheres the developer to the photosensitive body, a rotation control unit which controls rotation of the agitating auger and the supply auger, and a transfer unit which transfers a visible image formed on the photosensitive body onto a printing medium. When the developer is concentrated on any one of two gates, one of the augers, which is positioned on a downstream side of the gate on which the developer is concentrated, temporarily stops rotating by the rotation control unit, and the developer concentrated on the gate is transferred from the gate by the other one of the augers, which is positioned on an upstream side of the gate on which the developer is concentrated.

摘要翻译： 图像形成装置，显影单元以及显影单元的控制方法。 图像形成装置包括其上形成有静电潜像的感光体，将光束扫描到感光体上的光扫描单元，包括具有搅拌空间和供应空间的壳体的显影单元，搅拌空间和 所述供应空间通过两个门相互连通以使显影剂循环，可旋转地安装在所述搅拌空间中的搅拌式螺旋推运器以转移显影剂;可旋转地安装在所述供应空间中的用于传送显影剂的供应螺旋推运器和接收所述显影剂的磁性辊 显影剂，并将显影剂粘附到感光体上，旋转控制单元，其控制搅拌螺旋推运器和供料螺旋推运器的旋转;以及转印单元，其将形成在感光体上的可见图像转印到打印介质上。 当显影剂集中在两个门中的任何一个上时，位于显影剂集中的门的下游侧的螺旋推运器中的一个由旋转控制单元临时停止旋转，并且集中在闸门上的显影剂 通过位于其上集中有显影剂的闸门的上游侧的螺旋推运器中的另一个从闸门传送。

公开(公告)号：US20070248197A1

公开(公告)日：2007-10-25

申请号：US10583164

申请日：2004-12-17

申请人： Yong-Su Lee ,  Youn-Ok Park ,  Jun-Woo Kim ,  Dae-Ho Kim

发明人： Yong-Su Lee ,  Youn-Ok Park ,  Jun-Woo Kim ,  Dae-Ho Kim

IPC分类号： H04L27/08

CPC分类号： H03G3/3089 ,  H04L25/061 ,  H04L27/2647

摘要： Disclosed is an automatic gain control device in an orthogonal frequency division multiplexing system. A variable gain amplifier controls a gain of an input signal; an energy calculator calculates an energy of the input signal; a truncator accumulates the calculated energies, finds an average thereof, and generates a DC offset of the input signal; a subtracter subtracts a predefined reference value from the DC offset, and outputs a signal; and an RC filter feeds the value output by the subtracter back to the variable gain amplifier so that the value output by the subtracter may be used for an automatic gain control. The predefined reference value given to be 4.Ov is a reference power generated based on a saturation to RMS ratio for minimizing the bit error rate of the orthogonal frequency division multiplexing system.

摘要翻译： 公开了一种正交频分复用系统中的自动增益控制装置。 可变增益放大器控制输入信号的增益; 能量计算器计算输入信号的能量; 截断器累积计算出的能量，找到其平均值，并产生输入信号的DC偏移; 减法器从DC偏移中减去预定义的参考值，并输出信号; 并且RC滤波器将减法器输出的值馈送到可变增益放大器，使得减法器输出的值可用于自动增益控制。 给定为4.0V的预定义参考值是基于用于使正交频分复用系统的误码率最小化的饱和度与RMS比率产生的参考功率。

公开(公告)号：US08891724B2

公开(公告)日：2014-11-18

申请号：US12559059

申请日：2009-09-14

申请人： Hyung-Kyu Kim ,  Jong-Hun Kim ,  Dae-Ho Kim ,  Kun-Woo Song ,  Kyung-Ho Yoon ,  Young-Ho Lee ,  Jae-Yong Kim ,  Kang-Hee Lee

发明人： Hyung-Kyu Kim ,  Jong-Hun Kim ,  Dae-Ho Kim ,  Kun-Woo Song ,  Kyung-Ho Yoon ,  Young-Ho Lee ,  Jae-Yong Kim ,  Kang-Hee Lee

IPC分类号： G21C3/00 ,  G21C3/02 ,  G21C3/10 ,  G21C21/02

CPC分类号： G21C3/02 ,  G21C3/10 ,  G21C21/02 ,  Y02E30/40

摘要： A dual-cooled nuclear fuel rod and a method of manufacturing the same are provided. The nuclear fuel rod includes an outer cladding tube having a circular cross section, an inner cladding tube having an outer diameter smaller than an inner diameter of the outer cladding tube, and a length longer than the outer cladding tube, and located in parallel in the outer cladding tube, a pellet charged in a space between the outer and inner cladding tubes and generating energy by nuclear fission, and first and second end plugs coupling opposite ends of the outer cladding tube to stepped outer joints formed on outer circumferences of first ends thereof and coupling opposite ends of the inner cladding tube to stepped inner joints formed on inner circumferences of the first ends thereof.

摘要翻译： 提供了双冷核燃料棒及其制造方法。 核燃料棒包括具有圆形横截面的外包层管，外包层的外径小于外包层管的内径，长度比外包层管长，并且平行于 外包层管，填充在外包层管和内包壳管之间的空间中并通过核裂变产生能量的颗粒，以及将外包层管的相对端连接到形成在其第一端的外周上的阶梯式外接头的第一和第二端塞 并且将内包层管的相对端连接到形成在其第一端的内周上的阶梯式内接头。

公开(公告)号：US08125197B2

公开(公告)日：2012-02-28

申请号：US12509013

申请日：2009-07-24

申请人： Jong-Tae Hwang ,  Moon-Sang Jung ,  Jin-Sung Kim ,  Dae-Ho Kim ,  Min-Ho Jung

发明人： Jong-Tae Hwang ,  Moon-Sang Jung ,  Jin-Sung Kim ,  Dae-Ho Kim ,  Min-Ho Jung

IPC分类号： G05F1/70

CPC分类号： H02M1/4208 ,  Y02B70/126

摘要： Disclosed are a switch controller, a switch control method, and a converter based thereon. The switch controller generates an input sensing voltage corresponding to the input voltage of the converter, and compares the input sensing voltage with a predetermined first reference value. The switch controller generates a zero cross detection signal with a first level or a second level depending upon the comparison result, and generates a reference clock signal varying in frequency in accordance with one cycle of the zero cross detection signal. The switch controller generates digital signals by using the reference clock signal and the zero cross detection signal. The digital signals synchronize with the zero cross detection signal, and increase in accordance with the reference clock signal during a half of one cycle of the zero cross detection signal, while decreasing in accordance with the reference clock signal during the other half cycle of the zero cross detection signal. The switch controller generates a reference signal with a voltage level corresponding to the digital signal.

摘要翻译： 公开了一种开关控制器，开关控制方法和基于其的转换器。 开关控制器产生与转换器的输入电压相对应的输入感测电压，并将输入感测电压与预定的第一参考值进行比较。 开关控制器根据比较结果产生具有第一电平或第二电平的零交叉检测信号，并且根据过零检测信号的一个周期产生频率变化的参考时钟信号。 开关控制器通过使用参考时钟信号和过零检测信号来产生数字信号。 数字信号与零交叉检测信号同步，并且在零交叉检测信号的一个周期的一半期间根据参考时钟信号增加，而在零的另一半周期期间根据参考时钟信号减小 交叉检测信号。 开关控制器产生具有与数字信号对应的电压电平的参考信号。

公开(公告)号：US08081889B2

公开(公告)日：2011-12-20

申请号：US12331026

申请日：2008-12-09

申请人： Dae-Ho Kim

发明人： Dae-Ho Kim

IPC分类号： G03G21/00

CPC分类号： G03G21/0058 ,  G03G21/007 ,  G03G2221/1618 ,  G03G2221/163 ,  G03G2221/1657

摘要： An image forming apparatus includes: an image receptor; a developing member which develops a latent image on the image receptor with a toner; an anti-spattering member collecting free toner particles, a driver which drives the developing member and the anti-spattering member; and a controller which controls the driver not to drive the anti-spattering member during a printing operation, and to drive the anti-spattering member at other times when printing operation is not being performed.

摘要翻译： 图像形成装置包括：图像接收器; 显影构件，其利用调色剂在图像接收器上显影潜像; 收集游离调色剂颗粒的防飞溅构件，驱动显影构件和防溅射构件的驱动器; 以及控制器，其控制驾驶员在打印操作期间不驱动防飞溅构件，并且在不执行打印操作的其他时间驱动防溅射构件。

公开(公告)号：US20080287078A1

公开(公告)日：2008-11-20

申请号：US12095275

申请日：2006-12-08

申请人： Dae-Ho Kim ,  Jun-Woo Kim ,  Kyung-Yeol Sohn ,  Hyeong-Sook Park ,  Youn-Ok Park

发明人： Dae-Ho Kim ,  Jun-Woo Kim ,  Kyung-Yeol Sohn ,  Hyeong-Sook Park ,  Youn-Ok Park

IPC分类号： H04B1/16

CPC分类号： H04W52/10 ,  H04L27/2601 ,  H04W52/245 ,  H04W52/52

摘要： A terminal of a communication system includes a power amplifier, an open-loop power controller, a gain controller, a modulator, and a digital/analog converter. The power amplifier amplifies transmission power of a transmission signal. The open-loop power controller measures a received signal strength to control the transmission power, and increases a gain of the power amplifier according to the received signal strength. The gain controller sets a power concentration gain and applies the power concentration gain to the transmission signal when the gain of the power amplifier is maximized. The modulator modulates the transmission signal. The digital/analog converter converts an input signal to an analog signal. The gain controller applies the power concentration gain to the trans mission signal modulated by the modulator, and transmits the power concentration gain to the digital/analog converter.

摘要翻译： 通信系统的终端包括功率放大器，开环功率控制器，增益控制器，调制器和数/模转换器。 功率放大器放大发送信号的发送功率。 开环功率控制器测量接收信号强度以控制发射功率，并根据接收信号强度增加功率放大器的增益。 增益控制器设置功率集中增益，当功率放大器的增益最大化时，将功率集中增益应用于传输信号。 调制器调制发送信号。 数字/模拟转换器将输入信号转换为模拟信号。 增益控制器将功率集中增益应用于由调制器调制的传输信号，并将功率集中增益传输到数/模转换器。

公开(公告)号：US20080137781A1

公开(公告)日：2008-06-12

申请号：US11930013

申请日：2007-10-30

申请人： Young-Jo Bang ,  Chang-Wahn Yu ,  Seung-Jae Bahng ,  Dae-Ho Kim ,  Youn-Ok Park ,  Jee-Hwan Ahn ,  Il Min Kim

发明人： Young-Jo Bang ,  Chang-Wahn Yu ,  Seung-Jae Bahng ,  Dae-Ho Kim ,  Youn-Ok Park ,  Jee-Hwan Ahn ,  Il Min Kim

IPC分类号： H04L27/06

CPC分类号： H04L25/03242 ,  H04L1/0631

摘要： The present invention relates to a method of detecting a space-time code in a mobile communication system. When detecting a space-time code B for a plurality of transmitting antennas, an ML (maximum likelihood) metric, which is generally calculated by using a specific structure of a matrix B, is defined as a new ML metric by reducing a variable of the ML metric. Two dependent sphere decoding processes are performed and an intersection of the decoding results is calculated, and a signal is detected from the ML metric. Therefore, since detection of the space-time code B for the plurality of transmitting antennas is performed by using the newly defined ML metric, an amount of matrix calculated can be reduced, and a calculation amount can be reduced by performing the two dependent sphere decoding processes. Further, since a detection order of symbols is changed according to a channel situation, it is possible to improve the performance of the system.

摘要翻译： 本发明涉及一种在移动通信系统中检测时空码的方法。 当检测到多个发射天线的时空码B时，通常通过使用矩阵B的特定结构计算的ML（最大似然度）度量被定义为新的ML度量，通过减少 ML度量。 执行两个相关球体解码处理，并且计算解码结果的交点，并且从ML度量检测信号。 因此，由于通过使用新定义的ML度量来执行多个发送天线的空时码B的检测，所以可以减少计算出的矩阵的量，并且可以通过执行两个相关球体解码来减少计算量 过程。 此外，由于符号的检测顺序根据通道情况而改变，因此可以提高系统的性能。

公开(公告)号：US07970363B2

公开(公告)日：2011-06-28

申请号：US12095275

申请日：2006-12-08

申请人： Dae-Ho Kim ,  Jun-Woo Kim ,  Kyung-Yeol Sohn ,  Hyeong-Sook Park ,  Youn-Ok Park

发明人： Dae-Ho Kim ,  Jun-Woo Kim ,  Kyung-Yeol Sohn ,  Hyeong-Sook Park ,  Youn-Ok Park

IPC分类号： H01Q11/12 ,  H04K3/00

CPC分类号： H04W52/10 ,  H04L27/2601 ,  H04W52/245 ,  H04W52/52

摘要： A terminal of a communication system includes a power amplifier, an open-loop power controller, a gain controller, a modulator, and a digital/analog converter. The power amplifier amplifies transmission power of a transmission signal. The open-loop power controller measures a received signal strength to control the transmission power, and increases a gain of the power amplifier according to the received signal strength. The gain controller sets a power concentration gain and applies the power concentration gain to the transmission signal when the gain of the power amplifier is maximized. The modulator modulates the transmission signal. The digital/analog converter converts an input signal to an analog signal. The gain controller applies the power concentration gain to the trans mission signal modulated by the modulator, and transmits the power concentration gain to the digital/analog converter.

摘要翻译： 通信系统的终端包括功率放大器，开环功率控制器，增益控制器，调制器和数/模转换器。 功率放大器放大发送信号的发送功率。 开环功率控制器测量接收信号强度以控制发射功率，并根据接收信号强度增加功率放大器的增益。 增益控制器设置功率集中增益，并且当功率放大器的增益最大化时，将功率集中增益应用于传输信号。 调制器调制发送信号。 数字/模拟转换器将输入信号转换为模拟信号。 增益控制器将功率集中增益应用于由调制器调制的传输信号，并将功率集中增益传输到数/模转换器。

公开(公告)号：US07929621B2

公开(公告)日：2011-04-19

申请号：US11636815

申请日：2006-12-11

申请人： Jun-Woo Kim ,  Jae-Gun Jung ,  Dae-Ho Kim ,  Hyeong-Sook Park ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Jae-Gun Jung ,  Dae-Ho Kim ,  Hyeong-Sook Park ,  Youn-Ok Park

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L27/2608 ,  H04L25/03866 ,  H04L27/2647

摘要： A terminal demodulation apparatus previously stores a received frame signal in a memory before inputting the same into a fast Fourier transform (FFT) unit, performs a demodulation to necessary information read from the corresponding memory, and has a separate data subcarrier memory and pilot subcarrier memory, and uses the signal demodulation method mixed with a subcarrier allocation method so as to easily demodulate various subcarrier allocation methods.

摘要翻译： 终端解调装置预先将存储器中的接收帧信号存储在存储器中，并将其输入到快速傅里叶变换（FFT）单元中，对从相应的存储器读取的必要信息进行解调，并具有单独的数据副载波存储器和导频副载波存储器 并且使用与子载波分配方法混合的信号解调方法，以便容易地解调各种副载波分配方法。