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    • 5. 发明授权
    • Apparatus for protecting receiver in TDD wireless communication system
    • 用于在TDD无线通信系统中保护接收机的装置
    • US08068791B2
    • 2011-11-29
    • US11738691
    • 2007-04-23
    • Seong-Hun Kim
    • Seong-Hun Kim
    • H04B1/44H04B1/46
    • H04B1/44H01P1/15
    • A Time Division Duplex (TDD) switch of a TDD wireless communication system is provided. By its unique arrangement, the TDD switch protects a receiver of the wireless system. The TDD switch includes an isolator connected to an output port of a transmitter, a first transmission line stub, connected between the isolator and a circulator, for transmitting a transmission signal received from the isolator when in a transmission mode, and for isolating a transmission path when in a reception mode, a first transmission line connected to the circulator, for isolating a reception path when in the transmission mode, and for supplying to a receiver a reception signal provided from an antenna connected to the circulator when in the reception mode, and a second transmission line stub connected between the first transmission line and an input port of the receiver in a stub form, for controlling the first transmission line to isolate the reception path when in the transmission mode, and for supplying the reception signal to the receiver when in the reception mode.
    • 提供TDD无线通信系统的时分双工(TDD)交换机。 通过其独特的布置,TDD交换机保护无线系统的接收机。 TDD开关包括连接到发射机的输出端口的隔离器,连接在隔离器和环行器之间的第一传输线短路,用于在传输模式下发送从隔离器接收的传输信号,并且用于隔离传输路径 当处于接收模式时,连接到循环器的第一传输线在传输模式下用于隔离接收路径,并且在接收模式时向接收机提供从连接到环行器的天线提供的接收信号,以及 连接在第一传输线和接收器的输入端口之间的第二传输线短截线,用于在传输模式下控制第一传输线隔离接收路径,并将接收信号提供给接收机, 在接收模式。
    • 6. 发明授权
    • Dynamic initialization method and system of location server
    • 定位服务器的动态初始化方法和系统
    • US07945644B2
    • 2011-05-17
    • US11993196
    • 2006-06-22
    • Seong-Hun KimGye-Han Song
    • Seong-Hun KimGye-Han Song
    • G06F15/16
    • H04L12/185A63F13/12A63F13/35H04L12/1863H04L67/1095
    • A dynamic server initialization system and method includes a second location server requesting a first location server for a registration to a multicast group associated with a replication group, when the second location server is added to the replication group. The replication group comprises at least one location server. The status update messages received from a predetermined service server are transferred to the second location server, when the registration to the multicast group is completed. The second location server requests the first location server for a message dump when a predetermined reference time elapses. Subsequently, the status update messages which are maintained in a predetermined message pool of the first location server are dumped to the second location server according to the message dump request.
    • 动态服务器初始化系统和方法包括第二位置服务器,当第二位置服务器被添加到复制组时,请求第一位置服务器注册到与复制组相关联的多播组。 复制组包括至少一个位置服务器。 当向多播组的注册完成时,将从预定服务服务器接收到的状态更新消息传送到第二位置服务器。 当经过预定的参考时间时,第二位置服务器请求第一位置服务器进行消息转储。 随后,根据消息转储请求将维护在第一位置服务器的预定消息池中的状态更新消息转储到第二位置服务器。
    • 7. 发明授权
    • Master cylinder of brake
    • 主缸制动器
    • US07861524B2
    • 2011-01-04
    • US12041847
    • 2008-03-04
    • Seong Hun Kim
    • Seong Hun Kim
    • B60T11/16B60T11/232
    • B60T11/16B60T11/236
    • A master cylinder of a brake is disclosed. The master cylinder includes a cylinder body connected with an oil tank and defining therein a first pressure chamber and a second pressure chamber, which are separated from each other by a partition, a first piston to perform reciprocating movements in the first pressure chamber, a second piston to perform reciprocating movements in the second pressure chamber, a first return spring to elastically support the first piston in the first pressure chamber, and a second return spring to elastically support the second piston in the second pressure chamber. The first piston has a plurality of recesses formed at one end thereof to assure smooth supply of oil during braking. The master cylinder has the effects of assuring smooth supply of brake oil during braking, and preventing fluctuation of a piston therein.
    • 公开了一种制动器的主缸。 主缸包括与油箱连接的缸体,其中限定有通过隔板彼此分离的第一压力室和第二压力室,用于在第一压力室中进行往复运动的第一活塞,第二压力室 活塞,以在所述第二压力室中进行往复运动;第一复位弹簧,用于弹性地支撑所述第一压力室中的所述第一活塞;以及第二复位弹簧,用于将所述第二活塞弹性地支撑在所述第二压力室中。 第一活塞在其一端形成有多个凹槽,以确保在制动期间平稳地供应油。 主缸具有在制动期间确保制动油的平稳供给并防止其中的活塞的波动的效果。
    • 8. 发明授权
    • TDD switch of TDD wireless communication system
    • TDD无线通信系统的TDD切换
    • US07688765B2
    • 2010-03-30
    • US11751811
    • 2007-05-22
    • Seong-Hun Kim
    • Seong-Hun Kim
    • H04L5/14
    • H04L12/6418
    • A Time Division Duplex (TDD) wireless communication system includes a switch connected to an output port of a transmitter, a first transmission line for transmitting a transmission signal and for isolating a transmission path according to a mode, a first transmission line stub connected between the isolator and the first transmission line for reflecting a transmission signal transmitted from the isolator, a second transmission line connected between an output port of the first transmission line and an input port of a receiver for isolating a reception path in the transmission mode and for providing a reception signal received from the antenna feed line to the receiver, and a second transmission line stub connected in a stub form between the second transmission line and the input port of the receiver, for controlling the second transmission line to isolate the reception path.
    • 时分双工(TDD)无线通信系统包括连接到发射机的输出端口的开关,用于发送传输信号并根据模式隔离传输路径的第一传输线,连接在发射机之间的第一传输线段 隔离器和用于反射从隔离器发送的发送信号的第一传输线,连接在第一传输线的输出端口和接收器的输入端口之间的第二传输线,用于隔离传输模式中的接收路径, 从天线馈送线接收的接收信号到接收机;以及第二传输线短截线,以第二传输线与接收机的输入端口之间的短截线形式连接,用于控制第二传输线隔离接收路径。
    • 9. 发明申请
    • APPARATUS AND METHOD FOR DIGITAL PRE-DISTORTION, SHARING FEEDBACK PATH IN A MULTIPLE ANTENNA WIRELESS COMMUNICATION SYSTEM
    • 用于数字预失真的装置和方法,在多个天线无线通信系统中共享反馈路径
    • US20090184763A1
    • 2009-07-23
    • US12357215
    • 2009-01-21
    • Seong-Hun KIM
    • Seong-Hun KIM
    • H03F3/68
    • H03F1/3247H03F3/24H03F3/68
    • A multiple antenna wireless communication system using a DPD power amplifier and a method for controlling an amplitude of an input signal for a plurality of transmission paths of the DPD power amplifier are provided. The system includes a plurality of amplifiers, a plurality of couplers, a switch, a shared feedback path and a plurality of processors. The plurality of amplifiers amplifies an input signal directed to each of the transmission paths. The plurality of couplers couple amplified signals on respective transmission paths. The switch outputs at least one of the amplified signals coupled on the respective transmission paths. The shared feedback path provides the amplified signal output from the switch to a plurality of processors. The plurality of processors compare a feedback signal provided through the shared feedback path with the input signal and pre-distort the input signal such that the input signal and the amplified signal have a linear relation with each other.
    • 提供了使用DPD功率放大器的多天线无线通信系统和用于控制DPD功率放大器的多个传输路径的输入信号幅度的方法。 该系统包括多个放大器,多个耦合器,开关,共享反馈路径和多个处理器。 多个放大器放大针对每个传输路径的输入信号。 多个耦合器在相应的传输路径上耦合放大的信号。 开关输出耦合在各个传输路径上的放大信号中的至少一个。 共享反馈路径将从开关输出的放大信号提供给多个处理器。 多个处理器将通过共享反馈路径提供的反馈信号与输入信号进行比较,并对输入信号进行预失真,使得输入信号和放大信号彼此具有线性关系。