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    • 7. 发明申请
    • MIXER CIRCUIT
    • 混频器电路
    • US20110063013A1
    • 2011-03-17
    • US12868003
    • 2010-08-25
    • Young-Jin KimIl-Ho NaChun-Sik JeongSeong-Young SonSeung-Min LeeMyung-Woon Hwang
    • Young-Jin KimIl-Ho NaChun-Sik JeongSeong-Young SonSeung-Min LeeMyung-Woon Hwang
    • G06G7/12
    • G06G7/16
    • The present invention discloses a mixer circuit for mixing two input signals by source-coupled MOS transistors and outputting a mixed result. A duty cycle controlling MOS transistor is connected to a source of each source-coupled MOS transistor in series. A duty cycle controlling pulse is applied to a gate of the duty cycle controlling MOS transistor. The duty cycle controlling pulse has a phase shift of −90 degrees with respect to a controlling pulse applied to the gate of the source-coupled MOS transistor connected with the duty cycle controlling MOS transistor in series. An AND-combination of the duty cycles of the two controlling pulses applied to the gates of the two MOS transistors connected in series can be controlled at 25%. Comparing to the conventional mixer circuit having a switch control duty cycle of 50%, the present invention achieves the effects of increasing the gain and reducing the noise figure.
    • 本发明公开了一种用于通过源极耦合MOS晶体管混合两个输入信号并输出​​混合结果的混频器电路。 占空比控制MOS晶体管串联连接到每个源极耦合MOS晶体管的源极。 占空比控制脉冲施加到占空比控制MOS晶体管的栅极。 占空比控制脉冲相对于与占空比控制MOS晶体管串联连接的源极耦合MOS晶体管的栅极的控制脉冲具有-90度的相移。 施加到串联连接的两个MOS晶体管的栅极的两个控制脉冲的占空比的AND组合可以控制在25%。 与具有50%的开关控制占空比的常规混频器电路相比,本发明实现了增加增益和降低噪声系数的效果。
    • 9. 发明授权
    • Event notification method in wireless communications system
    • 无线通信系统中的事件通知方式
    • US07711782B2
    • 2010-05-04
    • US11362423
    • 2006-02-23
    • Young-Jin KimChan-Seok Lim
    • Young-Jin KimChan-Seok Lim
    • G06F15/16G06F15/173
    • H04L67/306H04L67/02H04L67/325H04L69/329
    • An event notification method in a wireless communications system can reduce the amount of transmission data in a wireless section and improve transmission efficiency by reducing the number of notifications with respect to an event which is frequently generated as a user sends a server an event notification request message including period information through a SIP-based client in order to request the notification with the specific event, and the server sends an event notification message to the client according to a period included in the period information or when a permitted time range is satisfied in order to notify the event when the corresponding event is generated.
    • 无线通信系统中的事件通知方法可以减少无线部分中的传输数据量,并且通过减少关于当用户向服务器发送事件通知请求消息而频繁生成的事件的通知减少的数量来提高传输效率 包括通过基于SIP的客户端的周期信息,以便请求具体事件的通知,并且服务器根据包含在周期信息中的周期或按照顺序满足允许时间范围向客户端发送事件通知消息 当生成相应的事件时通知事件。
    • 10. 发明授权
    • Antenna device for portable terminal
    • 便携式终端天线装置
    • US07587228B2
    • 2009-09-08
    • US11343096
    • 2006-01-30
    • Young-Jin Kim
    • Young-Jin Kim
    • H04M1/00
    • H01Q1/243H01Q1/38H01Q1/44H01Q21/28
    • An antenna device for a portable terminal, which includes an antenna module disposed in an antenna jack of a terminal capable of TV service, the antenna module receiving broadcasting signals depending on mounting/demounting of an external antenna. The antenna device for a portable terminal includes an antenna module disposed along the outer circumference of the antenna jack, which receives broadcasting signals depending on mounting/demounting of the external antenna; an insulator module; and an antenna switch module. The external antenna provides a broadcast signal to the terminal when connection jack of the external antenna is joined with the antenna jack. The antenna module provides broadcast signals when the connection jack external antenna is separated from the antenna jack.
    • 一种用于便携式终端的天线装置,其包括设置在能够进行TV服务的终端的天线插座中的天线模块,所述天线模块根据外部天线的安装/拆卸来接收广播信号。 用于便携式终端的天线装置包括沿着天线插孔的外圆周布置的天线模块,其根据外部天线的安装/拆卸来接收广播信号; 绝缘子模块; 和天线切换模块。 当外部天线的连接插孔与天线插孔连接时,外部天线向终端提供广播信号。 当连接插孔外部天线与天线插孔分离时,天线模块提供广播信号。