专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明申请

US20080019455A1 Mobile Station in Orthogonal Frequency Division Multiplexing Access System and Transmit Power Control Method Thereof 有权
标题翻译：移动台正交频分复用接入系统及其发射功率控制方法
公开(公告)号：US20080019455A1
公开(公告)日：2008-01-24
申请号：US11793160
申请日：2005-09-08
申请人： Dae-Ho Kim , Youn-Ok Park
发明人： Dae-Ho Kim , Youn-Ok Park
IPC分类号： H04L27/28
CPC分类号： H04W52/10 , H04L27/2626 , H04W52/08 , H04W52/146 , H04W52/245 , H04W52/246 , H04W52/52
摘要： The present invention relates to a mobile station of an OFDMA system and a transmit power control method thereof. The mobile station includes a modulator, a variable gain amplifier, a gain controller, and a power controller. The modulator modulates transmit data according to the number of allocated subchannels, and the variable gain amplifier amplifies the transmit data. The gain controller controls a gain of the transmit data inputted to the variable gain amplifier according to a subchannel gain value corresponding to the number of subchannels. The power controller calculates a power control gain for controlling power of the transmit data except the subchannel gain value based on the signal received from the base station and outputs the power control gain to the variable gain amplifier.
摘要翻译：本发明涉及OFDMA系统的移动台及其发射功率控制方法。移动台包括调制器，可变增益放大器，增益控制器和功率控制器。调制器根据分配的子信道的数量调制发送数据，可变增益放大器放大发送数据。增益控制器根据对应于子通道数量的子通道增益值来控制输入到可变增益放大器的发送数据的增益。功率控制器基于从基站接收的信号计算用于控制除了子信道增益值之外的发送数据的功率的功率控制增益，并将功率控制增益输出到可变增益放大器。

12. 发明申请

US20070135052A1 Downlink beamforming apparatus in OFDMA system and transmission apparatus including the same 有权
标题翻译： OFDMA系统中的下行波束成形装置及包括该下行链路波束成形装置的发送装置
公开(公告)号：US20070135052A1
公开(公告)日：2007-06-14
申请号：US11636812
申请日：2006-12-11
申请人： Hyeong-Sook Park , Kyung-Yeol Sohn , Dae-Ho Kim , Jun-Woo Kim , Youn-Ok Park
发明人： Hyeong-Sook Park , Kyung-Yeol Sohn , Dae-Ho Kim , Jun-Woo Kim , Youn-Ok Park
IPC分类号： H04B1/00
CPC分类号： H04B7/0617 , H04L5/023 , H04L27/2608 , Y02D70/142 , Y02D70/444
摘要： A downlink beamforming apparatus and a transmission apparatus including the same includes a subcarrier based user identifier for dividing subcarriers according to users, a beamforming weight buffer for storing first beamforming weights for the subcarriers by each of transmitting antennas, an interpolator for outputting second beamforming weights for each transmitting antenna by interpolating the first beamforming weights, and a signal reproducer for reproducing the signal for each transmitting antenna. Subcarriers are allocated to the signal by each user; and a complex multiplier multiplies the signal for each transmitting antenna by the second beamforming weights.
摘要翻译：下行链路波束成形装置及其发送装置包括：用于根据用户分割子载波的基于子载波的用户标识符;波束形成权重缓冲器，用于存储每个发送天线的子载波的第一波束形成权重;内插器，用于输出第二波束形成权重通过内插第一波束形成权重的每个发射天线，以及用于再现每个发射天线的信号的信号再现器。子载波由每个用户分配给信号; 并且复数乘法器将每个发射天线的信号乘以第二波束形成权重。

13. 发明授权

US08718153B2 Signal transmitting apparatus, method thereof, and inverse fast fourier transform apparatus for signal transmitting apparatus 有权
标题翻译：信号发送装置及其方法以及用于信号发送装置的快速傅立叶变换装置
公开(公告)号：US08718153B2
公开(公告)日：2014-05-06
申请号：US12105172
申请日：2008-04-17
申请人： Jun-Woo Kim , Dae-Ho Kim , Young-Ha Lee , Youn-Ok Park
发明人： Jun-Woo Kim , Dae-Ho Kim , Young-Ha Lee , Youn-Ok Park
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L27/2607 , H04L27/263
摘要： The present invention relates to a signal transmitting apparatus, a method thereof, and an inverse fast Fourier transform (IFFT) apparatus for a signal transmitting apparatus. A signal transmitting apparatus according to an embodiment of the present invention receives data, and performs inverse fast Fourier transform (IFFT) on the data on the basis of a twiddle factor for shifting output data by the size of a cyclic prefix. In addition, the signal transmitting apparatus sequentially stores data corresponding to the size of the cyclic prefix starting with initial data among the transformed data, and generates an OFDM symbol on the basis of the stored data and the transformed data. According to the embodiment of the present invention, it is possible to efficiently reduce a time delay and a memory use amount when a cyclic prefix is added at a transmitting end, without changing the size of hardware and power consumption.
摘要翻译：信号发送装置及其方法技术领域本发明涉及信号发送装置及其方法以及信号发送装置的快速傅里叶逆变换（IFFT）装置。根据本发明的实施例的信号发送装置接收数据，并且基于用于根据循环前缀的大小移位输出数据的旋转因子对数据进行快速傅立叶逆变换（IFFT）。此外，信号发送装置顺序地存储与变换数据中的初始数据开始的循环前缀的大小相对应的数据，并且根据存储的数据和变换后的数据生成OFDM符号。根据本发明的实施例，可以有效地减少在发送端添加循环前缀的时间延迟和存储器使用量，而不改变硬件和功耗的大小。

14. 发明授权

US07953165B2 Transmitting apparatus in orthogonal frequency division multiplexing access system capable of controlling gain for variation of sub-channel allocation and method for transmitting data thereof 有权
标题翻译：能够控制用于子信道分配变化的增益的正交频分复用接入系统中的发送装置及其发送数据的方法
公开(公告)号：US07953165B2
公开(公告)日：2011-05-31
申请号：US11667938
申请日：2005-09-07
申请人： Dae-Ho Kim , Jun-Woo Kim , Youn-Ok Park
发明人： Dae-Ho Kim , Jun-Woo Kim , Youn-Ok Park
IPC分类号： H04K1/10 , H04L27/28 , H04L27/00
CPC分类号： H04L27/2626 , H04L5/023
摘要： The present invention relates to a transmitter of an OFDMA system capable of controlling a gain for variation of subchannel allocation, and a method thereof. The transmitter includes a subchannel number determining unit, a modulator, a digital/analogue converter, and a gain controller controlling the gain. The subchannel number determining unit determines the number of subchannels in use according to communication environments, and the modulator modulates transmission data with reference to the number of subchannels determined by the subchannel number determining unit and outputs the modulated transmission data. The digital/analogue converter converts the transmission data into analogue data and transmits the converted analogue data through a transmit antenna. The gain controller controls gains of the transmission data according to gain values corresponding to the number of subchannels.
摘要翻译：本发明涉及能够控制用于子信道分配变化的增益的OFDMA系统的发射机及其方法。发射机包括子信道号确定单元，调制器，数/模转换器和控制增益的增益控制器。子信道号确定单元根据通信环境确定正在使用的子信道的数量，并且调制器参照由子信道号确定单元确定的子信道的数量来调制发送数据，并输出调制的发送数据。数字/模拟转换器将传输数据转换为模拟数据，并通过发送天线发送转换的模拟数据。增益控制器根据对应于子信道数量的增益值控制传输数据的增益。

15. 发明授权

US07899138B2 Method of detecting space-time code in mobile communication system with 4 Tx antenna 有权
标题翻译：用4个Tx天线检测移动通信系统中的时空码的方法
公开(公告)号：US07899138B2
公开(公告)日：2011-03-01
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 , II Min Kim
发明人： Young-Jo Bang , Chang-Wahn Yu , Seung-Jae Bahng , Dae-Ho Kim , Youn-Ok Park , Jee-Hwan Ahn , II Min Kim
IPC分类号： H04L27/06 , H03D1/00
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。

16. 发明申请

US20070291633A1 Transmitting Apparatus in Orthogonal Frequency Division Multiplexing Access System Capable of Controlling Gain for Variation of Sub-Channel Allocation and Method for Transmitting Data Thereof 有权
标题翻译：正交频分复用接入系统中的发射装置，能够控制增益用于子信道分配的变化和发送数据的方法
公开(公告)号：US20070291633A1
公开(公告)日：2007-12-20
申请号：US11667938
申请日：2005-09-07
申请人： Dae-Ho Kim , Jun-Woo Kim , Youn-Ok Park
发明人： Dae-Ho Kim , Jun-Woo Kim , Youn-Ok Park
IPC分类号： H04J11/00
CPC分类号： H04L27/2626 , H04L5/023
摘要： The present invention relates to a transmitter of an OFDMA system capable of controlling a gain for variation of subchannel allocation, and a method thereof. The transmitter includes a subchannel number determining unit, a modulator, a digital/analogue converter, and a gain controller controlling the gain. The subchannel number determining unit determines the number of subchannels in use according to communication environments, and the modulator modulates transmission data with reference to the number of subchannels determined by the subchannel number determining unit and outputs the modulated transmission data. The digital/analogue converter converts the transmission data into analogue data and transmits the converted analogue data through a transmit antenna. The gain controller controls gains of the transmission data according to gain values corresponding to the number of subchannels.
摘要翻译：本发明涉及能够控制用于子信道分配变化的增益的OFDMA系统的发射机及其方法。发射机包括子信道号确定单元，调制器，数/模转换器和控制增益的增益控制器。子信道号确定单元根据通信环境确定正在使用的子信道的数量，并且调制器参照由子信道号确定单元确定的子信道的数量来调制发送数据，并输出调制的发送数据。数字/模拟转换器将传输数据转换为模拟数据，并通过发送天线发送转换的模拟数据。增益控制器根据对应于子信道数量的增益值控制传输数据的增益。

17. 发明授权

US08055161B2 Image forming apparatus, developing unit thereof and method for controlling developing unit 有权
标题翻译：图像形成装置及显影装置及显影装置的控制方法
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。

18. 发明授权

US08977134B2 Apparatus for visible light communication providing intuitive information and method using the same 有权
标题翻译：用于可见光通信的装置提供直观的信息和使用它的方法
公开(公告)号：US08977134B2
公开(公告)日：2015-03-10
申请号：US13609783
申请日：2012-09-11
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： H04B10/116 , H04B10/114 , H04J14/02
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.
摘要翻译：公开了能够直观地识别传输速度，对准状态，通信状态或传送速率的可见光通信技术。根据本发明实施例的可见光通信装置包括：光源选择单元，通过考虑根据可见光中的波长区分的直观信息来选择产生具有不同波长的光的多个光源的至少一个光源带; 以及可见光通信单元，其通过至少一个选择的光源执行可见光通信，以允许通过与至少一个所选择的光源相对应的颜色来识别直观信息。因此，使用可见光通信的用户可以直观地知道最佳通信状态或传输速度。

19. 发明授权

US08891724B2 Dual-cooled nuclear fuel rod having annular plugs and method of manufacturing the same 有权
标题翻译：具有环形塞的双冷核燃料棒及其制造方法
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。

20. 发明授权

US08125197B2 Switch controller, switch control method, and converter using the same 有权
标题翻译：开关控制器，开关控制方式和转换器使用相同
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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式