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    • 83. 发明授权
    • Voltage controlled oscillator capable of tuning negative resistance
    • 压控振荡器可调谐负电阻
    • US07760038B2
    • 2010-07-20
    • US12096062
    • 2005-12-07
    • Yong-Deuk LeeCheol-Oh JeongJong-Won EunSeong-Pal LeeHo-Jin Lee
    • Yong-Deuk LeeCheol-Oh JeongJong-Won EunSeong-Pal LeeHo-Jin Lee
    • H03B5/00H03B5/18
    • H03B7/143H03B5/30
    • Provided is a voltage controlled oscillator having a new type of a resonator and a negative resistance part capable of finely tuning negative resistance. Thus, the voltage controlled oscillator has an excellent quality factor characteristic and can finely tune the negative resistance even after its fabrication is completed. The voltage controlled oscillator having an active element includes: a resonating unit for generating an oscillation frequency according to a resonance capacitance; a frequency tuning unit, connected to a source terminal of the active element, for tuning the oscillation frequency; and a negative resistance adjusting unit, connected to the frequency tuning unit, for generating a negative resistance to adjust the oscillation frequency, the negative resistance adjusting unit including a varactor diode for finely adjusting the negative resistance.
    • 提供了具有新型谐振器的压控振荡器和能够微调负电阻的负电阻部分。 因此,压控振荡器具有优异的品质因数特性,并且即使在其制造完成之后也可以微调负电阻。 具有有源元件的压控振荡器包括:谐振单元,用于根据谐振电容产生振荡频率; 频率调谐单元,连接到有源元件的源极端子,用于调谐振荡频率; 负电阻调节单元,连接到频率调谐单元,用于产生负电阻以调节振荡频率,负电阻调节单元包括用于精细调节负电阻的变容二极管。
    • 84. 发明申请
    • APPARATUS AND METHOD FOR PROVIDING CONTENTS PUSH SERVICE, AND MOBILE TERMINAL AND OPERATION METHOD THEREOF
    • 用于提供内容推送服务的装置和方法及其移动终端及其操作方法
    • US20100069044A1
    • 2010-03-18
    • US12447886
    • 2007-11-08
    • Ho-Jin Lee
    • Ho-Jin Lee
    • H04L12/58G06F15/16
    • H04L67/26H04L67/04H04L69/16H04L69/162H04L69/164
    • The present invention relates to an apparatus and method of providing a content push service, a mobile terminal, and a method of operating a mobile terminal. According to an exemplary embodiment of the present invention, a user datagram protocol (UDP) port is set between the mobile terminal and a content push service providing server. In addition, the mobile terminal drives an application that receives the content push service through the set user datagram protocol (UDP) port, by the request of the content push service providing server. The mobile terminal receives the content push service from the content push service providing server through the driven application. Accordingly, it is not necessary to select a specific identifier for each of existing applications and recognize a specific identifier for each node of the mobile communication network.
    • 本发明涉及提供内容推送服务,移动终端和操作移动终端的方法的装置和方法。 根据本发明的示例性实施例,在移动终端和内容推送服务提供服务器之间设置用户数据报协议(UDP)端口。 此外,通过内容推送服务提供服务器的请求,移动终端通过设置的用户数据报协议(UDP)端口来驱动接收内容推送服务的应用。 移动终端通过驱动应用从内容推送服务提供服务器接收内容推送服务。 因此,不需要为每个现有应用选择特定的标识符并且识别移动通信网络的每个节点的特定标识符。
    • 85. 发明授权
    • Apparatus for determining diameter of parabolic antenna and method therefor
    • 用于确定抛物面天线直径的装置及其方法
    • US07653501B2
    • 2010-01-26
    • US12088461
    • 2005-12-26
    • Jeom-hun LeeJae-Hoon KimHo-Jin Lee
    • Jeom-hun LeeJae-Hoon KimHo-Jin Lee
    • G01R23/00
    • G01B21/10H01Q19/132
    • Provided are an apparatus and method for determining a diameter of a reflector antenna. The apparatus includes a setting unit for setting up electrical characteristic values of the reflector antenna upon receipt thereof from outside, a parameter input unit for receiving a frequency, an antenna diameter variable value, antenna efficiency, Edge Taper (ET), and an Edge Of Coverage (EOC) angle as parameters for each of multiple frequencies to be accommodated in the reflector antenna, a graph generator for generating, on one rectangular coordinate, a graph representing the relationship between an antenna diameter and EOC directivity with respect to the EOC angle based on the parameters for each frequency received through the parameter input unit, an antenna diameter determination unit for determining an antenna diameter that simultaneously meets the preset EOC directivities for the frequencies to be accommodated in the reflector antenna by using the graph generated by the graph generation unit, and a graph output unit for mapping and outputting the graph generated by the graph generation unit on one rectangular coordinate with an antenna diameter axis and an EOC directivity axis to thereby represent the antenna diameter determined by the antenna diameter determination unit on the graph.
    • 提供了一种用于确定反射器天线的直径的装置和方法。 该装置包括:设置单元,用于在从外部接收反射器天线时设置反射器天线的电特性值,用于接收频率的参数输入单元,天线直径可变值,天线效率,边缘锥度(ET) 覆盖(EOC)角度作为要容纳在反射器天线中的多个频率中的每一个的参数,图形生成器,用于在一个矩形坐标上生成表示相对于基于EOC角度的天线直径和EOC方向性之间的关系的曲线图 关于通过参数输入单元接收的每个频率的参数,天线直径确定单元,用于通过使用由图形生成单元生成的图形来确定同时满足反射天线中容纳的频率的预设EOC方向性的天线直径 以及用于映射和输出由该图形生成的图形的图形输出单元 生成单元,其具有天线直径轴和EOC方向轴的一个矩形坐标,从而表示由图中天线直径确定单元确定的天线直径。
    • 86. 发明申请
    • Method for Adaptive Transmit Power Allocation in Multiuser Ofdm System
    • 多用户系统中自适应发射功率分配的方法
    • US20080279142A1
    • 2008-11-13
    • US12096205
    • 2006-11-09
    • Byoung-Gi KimKun-Seok KangDo-Seob AhnHo-Jin Lee
    • Byoung-Gi KimKun-Seok KangDo-Seob AhnHo-Jin Lee
    • H04Q7/20
    • H04W52/42
    • Provided is a method for adaptive transmit power allocation in a multiuser OFDM system. The method includes: a) obtaining a channel gain for a predetermined bit period for each user at a predetermined time, and allocating all of available sub carriers to a user farthest separated among a plurality of users having a good channel gain; b) comparing a channel gain of the user allocated with the subcarrier at the step a) with an initial threshold value; c) allocating a transmit power uniformly to each of the sub carries allocated at the step a) using an Equal-power allocation algorithm if the channel gain is larger than the initial threshold value at the step b); and d) allocating a transmit power to each of the sub carriers allocated at the step a) using a water-filling power allocation algorithm if the channel gain is smaller than the initial threshold value at the step b).
    • 提供了一种用于多用户OFDM系统中的自适应发射功率分配的方法。 该方法包括:a)在预定时间内为每个用户获得预定比特周期的信道增益,并将所有可用子载波分配给具有良好信道增益的多个用户中最远分离的用户; b)将步骤a)中分配有子载波的用户的信道增益与初始阈值进行比较; c)如果在步骤b)中信道增益大于初始阈值,则使用等功率分配算法,在步骤a)中分配的每个子载波均匀地分配发射功率; 以及d)如果在步骤b)中信道增益小于初始阈值,则使用灌水功率分配算法,在步骤a)中分配的每个子载波分配发送功率。
    • 87. 发明申请
    • Apparatus for Determining Diameter of Parabolic Antenna and Method Therefor
    • 用于确定抛物线天线直径的装置及其方法
    • US20080249739A1
    • 2008-10-09
    • US12088461
    • 2005-12-26
    • Jeom-Hun LeeJae-Hoon KimHo-Jin Lee
    • Jeom-Hun LeeJae-Hoon KimHo-Jin Lee
    • G01B21/10
    • G01B21/10H01Q19/132
    • Provided are an apparatus and method for determining a diameter of a reflector antenna. The apparatus includes a setting unit for setting up electrical characteristic values of the reflector antenna upon receipt thereof from outside, a parameter input unit for receiving a frequency, an antenna diameter variable value, antenna efficiency, Edge Taper (ET), and an Edge Of Coverage (EOC) angle as parameters for each of multiple frequencies to be accommodated in the reflector antenna, a graph generator for generating, on one rectangular coordinate, a graph representing the relationship between an antenna diameter and EOC directivity with respect to the EOC angle based on the parameters for each frequency received through the parameter input unit, an antenna diameter determination unit for determining an antenna diameter that simultaneously meets the preset EOC directivities for the frequencies to be accommodated in the reflector antenna by using the graph generated by the graph generation unit, and a graph output unit for mapping and outputting the graph generated by the graph generation unit on one rectangular coordinate with an antenna diameter axis and an EOC directivity axis to thereby represent the antenna diameter determined by the antenna diameter determination unit on the graph.
    • 提供了一种用于确定反射器天线的直径的装置和方法。 该装置包括:设置单元,用于在从外部接收反射器天线时设置反射器天线的电特性值,用于接收频率的参数输入单元,天线直径可变值,天线效率,边缘锥度(ET) 覆盖(EOC)角度作为要容纳在反射器天线中的多个频率中的每一个的参数,图形生成器,用于在一个矩形坐标上生成表示相对于基于EOC角度的天线直径和EOC方向性之间的关系的曲线图 关于通过参数输入单元接收的每个频率的参数,天线直径确定单元,用于通过使用由图形生成单元生成的图形来确定同时满足反射天线中容纳的频率的预设EOC方向性的天线直径 以及用于映射和输出由该图形生成的图形的图形输出单元 生成单元,其具有天线直径轴和EOC方向轴的一个矩形坐标,从而表示由图中天线直径确定单元确定的天线直径。
    • 90. 发明授权
    • Method for controlling data transmission rate in interactive satellite communication system
    • 交互式卫星通信系统中数据传输速率的控制方法
    • US07286824B2
    • 2007-10-23
    • US10916965
    • 2004-08-11
    • Ki-Dong LeeHo-Jin LeeHo-Kyom KimDeock-Gil Oh
    • Ki-Dong LeeHo-Jin LeeHo-Kyom KimDeock-Gil Oh
    • H04Q7/20
    • H04B7/18532
    • A method for controlling data transmission rate in order to save waste of resources due to Non-Line Of Sight (NLOS) region when a mobile terminal passes through the NLOS region in an interactive satellite communication system is disclosed. The method includes the steps of setting at least one threshold; at a Network Control Center (NCC) adjusting allocated resources based on the Constant Resources Allocation (CRA) after detecting whether Satellite Access Control is lost or not; compensating transmission delay by reallocating if the mobile terminal returns from the NLOS region within a first threshold duration, wherein the mobile terminal maintains the fine sync state during the first threshold duration; and deallocating all resources allocated based on the CRA if the mobile terminal does not return from the NLOS region within the first threshold duration.
    • 公开了一种用于控制数据传输速率的方法,以便在移动终端通过交互式卫星通信系统中的NLOS区域时节省由于非视线(NLOS)区域引起的资源浪费。 该方法包括以下步骤:设置至少一个阈值; 在网络控制中心(NCC)检测到卫星接入控制是否丢失之后,根据恒定资源分配(CRA)调整分配的资源; 如果所述移动终端在第一阈值持续时间内从所述NLOS区域返回,则通过重新分配来补偿传输延迟,其中所述移动终端在所述第一阈值持续时间期间保持所述精细同步状态; 并且如果移动终端在第一阈值持续时间内没有从NLOS区域返回,则释放基于CRA分配的所有资源。