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    Access device for preventing transmission of copyrighted content to external network and method for the same
    31.
    发明授权
    Access device for preventing transmission of copyrighted content to external network and method for the same 有权
    用于防止版权内容传送到外部网络的访问设备及其方法

    公开(公告)号：US08582574B2

    公开(公告)日：2013-11-12

    申请号：US11505786

    申请日：2006-08-18

    申请人： Dong-yun Shin ,  Sung-joon Park ,  Yoo-seung Hwang

    发明人： Dong-yun Shin ,  Sung-joon Park ,  Yoo-seung Hwang

    IPC分类号： H04L12/28 ,  H04L12/56

    CPC分类号： H04L45/00 ,  H04L63/0236 ,  H04L63/0245

    摘要： An access device and method for preventing transmission of copyrighted contents to an external network and a method for the same. The access device includes a packet-header analyzer analyzing a header of a packet received from a home network device, a copyrighted-content sensor detecting whether the packet includes copyrighted content as a result of the analysis, an address converter for converting a packet source IP address into an IP address supported by the external network if a packet destination address is an external network address as a result of the analysis, a mapping-table generator generating a mapping table for managing a mapping a relationship between the packet source IP address and the converted IP address, and a packet transmitter transmitting the packet to the IP address supported by the external network and discarding the packet to block transmission of the copyrighted content to the external network if the copyrighted-content sensor detects that the packet includes the copyrighted content.

    摘要翻译： 用于防止将受版权保护的内容传送到外部网络的接入装置和方法及其方法。 访问装置包括分析从归属网络装置接收到的分组的报头的分组报头分析器，作为分析结果，检测分组是否包含受版权保护的内容的版权内容传感器，用于转换分组源IP的地址转换器 作为分析结果，如果分组目的地址是外部网络地址，则映射到由外部网络支持的IP地址中;映射表生成器，生成映射表，用于管理分组源IP地址和 转发的IP地址以及分组发送器将该分组发送到由外部网络支持的IP地址，并且如果受版权保护的内容传感器检测到该分组包含受版权保护的内容，则丢弃该分组以阻止将受版权保护的内容传输到外部网络。

    Hierarchical threshold tree-based broadcast encryption method
    32.
    发明授权
    Hierarchical threshold tree-based broadcast encryption method 有权
    基于层次阈值树的广播加密方法

    公开(公告)号：US08005225B2

    公开(公告)日：2011-08-23

    申请号：US11340614

    申请日：2006-01-27

    申请人： Dae-youb Kim ,  Hwan-joon Kim ,  Sung-joon Park ,  Weon-il Jin ,  Dong-hoon Lee

    发明人： Dae-youb Kim ,  Hwan-joon Kim ,  Sung-joon Park ,  Weon-il Jin ,  Dong-hoon Lee

    IPC分类号： H04L29/00

    CPC分类号： H04L9/0836 ,  H04L9/0822 ,  H04L9/085 ,  H04L2209/601

    摘要： A hierarchical threshold tree-based broadcast encryption method includes a first step for a server initialization and a user subscription, a second step of distributing a message to enable a privileged user (authorized user) to decrypt a group key, and a third step of the privileged user (authorized user) decrypting the message using the group key. According to the method, it is possible to prevent any group of revocators from obtaining the group key using their secret information and information being broadcast by the server.

    摘要翻译： 基于分层阈值树的广播加密方法包括用于服务器初始化和用户订阅的第一步骤，分发消息以使得特权用户（授权用户）能够解密组密钥的第二步骤，以及第三步骤 特权用户（授权用户）使用组密钥解密消息。 根据该方法，可以防止任何一组撤销者使用其秘密信息和由服务器广播的信息来获得组密钥。

    Protective layer of ink-jet print head and method of making ink-jet print head having the same
    39.
    发明申请
    Protective layer of ink-jet print head and method of making ink-jet print head having the same 审中-公开

    公开(公告)号：US20070285471A1

    公开(公告)日：2007-12-13

    申请号：US11790369

    申请日：2007-04-25

    申请人： Sung-joon Park ,  O-hyun Beak ,  Young-ung Ha ,  Jae-sik Min

    发明人： Sung-joon Park ,  O-hyun Beak ,  Young-ung Ha ,  Jae-sik Min

    IPC分类号： B41J2/05

    CPC分类号： B41J2/14129 ,  B41J2202/03

    摘要： An ink-jet print head and a method of making the same comprising the steps of sequentially laminating a heating layer and an electric conductive layer on a substrate, patterning the electric conductive layer to expose a predetermined area of the top surface of the heating layer, forming a protective layer on the top surfaces of the electric conductive layer and exposed heating layer, and laminating an ink chamber barrier and a nozzle plate on the top surface of the protective layer, thereby forming an ink chamber. The protective layer is provided by forming a cavitation layer by alternately laminating at least two types of thin film layers of different materials over the exposed heating layer and the electric conductive layer to resist fractures and oxidization resulting from use.

    Combination-based broadcast encryption method
    40.
    发明申请
    Combination-based broadcast encryption method 有权
    基于组合的广播加密方式

    公开(公告)号：US20070140483A1

    公开(公告)日：2007-06-21

    申请号：US11311256

    申请日：2005-12-20

    申请人： Weon-il Jin ,  Dae-youb Kim ,  Hwan-joon Kim ,  Sung-joon Park

    发明人： Weon-il Jin ,  Dae-youb Kim ,  Hwan-joon Kim ,  Sung-joon Park

    IPC分类号： H04L9/00 ,  G06F12/14 ,  H04L9/32 ,  G06F11/30

    CPC分类号： H04L9/0833 ,  G06F21/10 ,  H04L9/0822 ,  H04L2209/601

    摘要： A combination-based broadcast encryption method includes: assigning by a server a base group of different combinations to each user; producing and sending secret information for each user by using as a base the base group allocated to each user; producing and sending an inverse-base parameter value through calculations with integers used to produce the base group and key value information of one or more privileged users; and deriving a group key by using the key value information of the privileged users, encrypting a session key by using the derived group key, and sending the encrypted session key to each user. Accordingly, each user is assigned a different base through a combination, thereby having security against collusion attacks.

    摘要翻译： 基于组合的广播加密方法包括：由服务器分配不同组合的基组给每个用户; 通过使用分配给每个用户的基本组作为基础来生成和发送每个用户的秘密信息; 通过用于产生基本组的整数和一个或多个特权用户的键值信息的计算产生和发送反基本参数值; 以及通过使用所述特权用户的密钥值信息来导出组密钥，通过使用导出的组密钥加密会话密钥，以及将加密的会话密钥发送给每个用户。 因此，通过组合为每个用户分配不同的基站，从而具有防止串通攻击的安全性。