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    Key distribution method and authentication server
    2.
    发明授权
    Key distribution method and authentication server 有权
    密钥分发方式和认证服务器

    公开(公告)号：US08850205B2

    公开(公告)日：2014-09-30

    申请号：US12325958

    申请日：2008-12-01

    申请人： Hyoung-Kee Choi ,  Jung-Yoon Kim ,  Do-Hyun Kwon ,  Eun-Young Lee ,  In-Hwan Kim ,  Se-Hwa Song

    发明人： Hyoung-Kee Choi ,  Jung-Yoon Kim ,  Do-Hyun Kwon ,  Eun-Young Lee ,  In-Hwan Kim ,  Se-Hwa Song

    IPC分类号： H04L9/32 ,  H04L29/06 ,  H04W12/04 ,  H04L9/08

    CPC分类号： H04L9/0833 ,  H04L9/0866 ,  H04L9/0869 ,  H04L2209/601 ,  H04L2209/80

    摘要： A method of and an authentication server for distributing a key are disclosed. According to an embodiment of the present invention, the method of distributing a key, which is distributed by an authentication server connected with wireless terminals through a communication network, for encrypting and decrypting data in accordance with providing a service can include: obtaining characteristic information by decrypting encrypted characteristic information that has been received from each of n number of wireless terminals; generating a random key; generating a group key used for encrypting and decrypting data in accordance with providing a service; and generating a distribution key by using the random key, the group key and the characteristic information, and transmitting the distribution key to each wireless terminal.

    摘要翻译： 公开了一种用于分发密钥的方法和认证服务器。 根据本发明的实施例，通过通信网络与无线终端连接的认证服务器分发的密钥分配方法，用于根据提供业务对数据进行加密和解密，包括：通过以下方式获得特征信息： 解密从n个无线终端中的每一个接收到的加密特征信息; 产生随机密钥; 根据提供服务产生用于加密和解密数据的组密钥; 以及通过使用所述随机密钥，所述组密钥和所述特征信息来生成分发密钥，并将所述分发密钥发送到每个无线终端。

    System, method, service server, traffic information relay method, application server, mobile communication terminal, navigation terminal, execution method, and storage medium for providing traffic information using short-range communication network
    3.
    发明授权
    System, method, service server, traffic information relay method, application server, mobile communication terminal, navigation terminal, execution method, and storage medium for providing traffic information using short-range communication network 有权

    公开(公告)号：US08774779B2

    公开(公告)日：2014-07-08

    申请号：US13126663

    申请日：2009-07-29

    申请人： Jeong Hoon Lee ,  Jeong Min You ,  In Hwan Kim ,  Sung Mu Son

    发明人： Jeong Hoon Lee ,  Jeong Min You ,  In Hwan Kim ,  Sung Mu Son

    IPC分类号： H04L29/06 ,  H04M11/00 ,  H04M1/66

    CPC分类号： H04W4/00 ,  G08G1/096741 ,  G08G1/096775 ,  H04W12/06 ,  H04W84/04 ,  H04W84/10 ,  H04W88/06

    摘要： The present invention relates to a system, a method, a service server, a traffic information relay method, an application server, a mobile communication terminal, a navigation terminal, an execution method, and a storage medium for providing traffic information using a short-range communication network, and more specifically to a technique for providing traffic information using a short-range communication network, in which a navigation terminal connectible to the short-range communication network receives traffic information from an application server connected to a mobile communication network via the mobile communication terminal and the service server, thereby overcoming restrictions of communication networks. A system for providing traffic information according to the present invention comprises: a navigation terminal connected to a mobile communication terminal through the short-range communication network, for executing the traffic information requested and received from an application server; the mobile communication terminal connected to the navigation terminal through the short-range communication network and connected to a service server through a mobile communication network, for transferring data between the navigation terminal and the service server; the service server connected to the mobile communication terminal through the mobile communication network and connected to the application server through the mobile communication network or a wired communication network, for performing authentication for the navigation terminal and the mobile communication terminal and requesting the application server to provide the traffic information requested by the authenticated navigation terminal; and the application server connected to the service server through the mobile communication network or the wired communication network, for providing the traffic information requested by the navigation terminal.

    Organic light emitting display and driving method thereof
    4.
    发明授权
    Organic light emitting display and driving method thereof 有权
    有机发光显示器及其驱动方法

    公开(公告)号：US08773478B2

    公开(公告)日：2014-07-08

    申请号：US13238432

    申请日：2011-09-21

    申请人： Min-Cheol Kim ,  In-Hwan Kim

    发明人： Min-Cheol Kim ,  In-Hwan Kim

    IPC分类号： G09G5/00

    CPC分类号： G09G3/3258 ,  G09G3/3291 ,  G09G2320/0238

    摘要： An organic light emitting display includes a first display unit having pixels coupled to odd scan and data lines, a second display unit having pixels coupled to even scan and data lines, a third display unit having pixels coupled to the odd scan lines and even data lines, and a fourth display unit having pixels coupled to the even scan lines and odd data lines. A timing controller extracts image data corresponding to each of the display units from inputted image data of one frame. A scan driver sequentially supplies a scan signal to the scan lines in each of four sub-frame periods of one frame period. A data driver converts extracted image data of each of the display units into corresponding data voltages, and supplies the corresponding data voltages to respective ones of the display units through the data lines for respective sub-frame periods of the one frame period.

    摘要翻译： 有机发光显示器包括具有耦合到奇数扫描和数据线的像素的第一显示单元，具有耦合到偶数扫描和数据线的像素的第二显示单元，具有耦合到奇数扫描线和偶数数据线的像素的第三显示单元 以及具有耦合到偶数扫描线和奇数数据线的像素的第四显示单元。 定时控制器从一帧的输入图像数据中提取与每个显示单元相对应的图像数据。 扫描驱动器在一个帧周期的四个子帧周期中的每一个中顺序地将扫描信号提供给扫描线。 数据驱动器将每个显示单元的提取的图像数据转换成相应的数据电压，并且通过数据线将相应的数据电压提供给相应的数据电压，用于一帧周期的各个子帧周期。

    Pixel driving circuit of electro-luminescent display device and driving method thereof
    5.
    发明授权
    Pixel driving circuit of electro-luminescent display device and driving method thereof 有权
    电致发光显示装置的像素驱动电路及其驱动方法

    公开(公告)号：US08581808B2

    公开(公告)日：2013-11-12

    申请号：US11987391

    申请日：2007-11-29

    申请人： In-Hwan Kim ,  Seung-Chan Byun ,  Jin-Hyoung Kim

    发明人： In-Hwan Kim ,  Seung-Chan Byun ,  Jin-Hyoung Kim

    IPC分类号： G09G3/30

    CPC分类号： G09G3/3233 ,  G09G3/3216 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2320/0626 ,  G09G2330/021

    摘要： The present invention relates to a method for properly controlling the drive current when driving an Active Matrix OLED (AMOLED) in order to prevent the brightness from being changed due to temperature changes in a panel or the performance deterioration of the OLED. The present invention comprises: an OLED (organic light emitting diode) panel that displays an image; pixel driving circuit including: a drive current control unit that outputs a current control signal corresponding to a detected current supplied to the OLED panel; and a comparator that compares the current control signal with a power supply voltage and outputs a bias voltage; and a transistor that receives the power supply voltage and that supplies a drive current to the OLED panel corresponding to the bias voltage.

    摘要翻译： 本发明涉及一种用于在驱动有源矩阵OLED（AMOLED）时适当地控制驱动电流的方法，以防止由于面板中的温度变化或OLED的性能劣化而引起的亮度变化。 本发明包括：显示图像的OLED（有机发光二极管）面板; 像素驱动电路，包括：驱动电流控制单元，其输出与提供给所述OLED面板的检测电流相对应的电流控制信号; 以及将电流控制信号与电源电压进行比较并输出偏置电压的比较器; 以及晶体管，其接收电源电压并且向OLED面板提供对应于偏置电压的驱动电流。