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    Hierarchical threshold tree-based broadcast encryption method
    2.
    发明申请
    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：US20070189539A1

    公开(公告)日：2007-08-16

    申请号：US11340614

    申请日：2006-01-27

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

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

    IPC: H04L9/00

    CPC classification number: H04L9/0836 ,  H04L9/0822 ,  H04L9/085 ,  H04L2209/601

    Abstract: 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.

    Abstract translation: 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。

    Digital broadcast transmission system of improved receptability and signal processing method thereof
    3.
    发明申请
    Digital broadcast transmission system of improved receptability and signal processing method thereof 失效
    数字广播传输系统，其改进的接收性及其信号处理方法

    公开(公告)号：US20050047519A1

    公开(公告)日：2005-03-03

    申请号：US10887310

    申请日：2004-07-09

    Applicant: Joon-soo Kim ,  Dong-hoon Lee ,  Jung-won Kwak ,  Chan-sub Park

    Inventor： Joon-soo Kim ,  Dong-hoon Lee ,  Jung-won Kwak ,  Chan-sub Park

    IPC: H04N7/015 ,  H04L1/00 ,  H04L25/03 ,  H04L27/00 ,  H04L27/04 ,  H04L27/06

    CPC classification number: H04L1/0057 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071 ,  H04L25/03834 ,  H04L27/04 ,  H04L27/066 ,  H04L2025/03382 ,  H04L2027/0087

    Abstract: A digital broadcast transmission system and a signal processing method thereof offers improved receptability. The digital broadcast transmission system includes an error correction encoding unit for encoding an input signal according to a predetermined error correction method; a synchronous signal inserting unit for inserting a synchronous signal in the input signal after the error correction encoding; a first pilot inserting unit for inserting a first pilot signal in the input signal which contains the synchronous signal therein; a second pilot inserting unit for inserting a plurality of second pilot signals in the input signal which contains the first pilot signal therein; a pulse shaping filter for pulse shaping the input signal with the first and the second pilot signals according to a predetermined roll-off factor; and a radio frequency (RF) unit for transmitting the pulse-shaped input signal to a transmission channel band. By inserting a plurality of pilot signals in the transmitted data, problems associated with disappearance of only pilot signal due to poor channel environment can be overcome.

    Abstract translation: 数字广播传输系统及其信号处理方法提供了改进的可接受性。 数字广播传输系统包括：纠错编码单元，用于根据预定的纠错方法对输入信号进行编码; 同步信号插入单元，用于在纠错编码之后的输入信号中插入同步信号; 用于在包含所述同步信号的输入信号中插入第一导频信号的第一导频插入单元; 第二导频插入单元，用于在包含第一导频信号的输入信号中插入多个第二导频信号; 脉冲整形滤波器，用于根据预定的滚降因子对具有第一和第二导频信号的输入信号进行脉冲整形; 以及用于将脉冲输入信号发送到传输信道频带的射频（RF）单元。 通过在发送的数据中插入多个导频信号，可以克服与由于恶劣的信道环境导致的导频信号消失有关的问题。

    Method and apparatus to automatically switch memory cards in a multi-functional device, and method of configuring a removable disc driver
    6.
    发明申请
    Method and apparatus to automatically switch memory cards in a multi-functional device, and method of configuring a removable disc driver 审中-公开
    在多功能设备中自动切换存储卡的方法和装置以及配置可移动盘驱动器的方法

    公开(公告)号：US20060026350A1

    公开(公告)日：2006-02-02

    申请号：US11189844

    申请日：2005-07-27

    Applicant: Kyoung-jae Lee ,  Dong-hoon Lee

    Inventor： Kyoung-jae Lee ,  Dong-hoon Lee

    IPC: G06F13/00

    CPC classification number: G06F3/0632 ,  G06F3/0607 ,  G06F3/0688 ,  G06F12/0623 ,  G06F12/0806 ,  G06F12/0842 ,  G06F13/12

    Abstract: A method of automatically switching among memory cards inserted into a plurality of memory card slots in an image forming apparatus, respectively includes determining memory card types and a number of the memory cards inserted into the plurality of memory card slots, determining whether switching of the memory cards is appropriate, automatically switching from a current memory card to a next memory card according to a predefined order, when it is determined that switching of the memory cards is appropriate, and exchanging data with the next memory card. A method of configuring removable disk drivers in a host device connected to a multi-memory card reader having a plurality of memory card slots includes determining whether memory cards are inserted into the plurality of memory card slots, respectively, counting a number of memory card slots having corresponding memory cards inserted therein, and transmitting a counted number of memory card slots having the corresponding memory cards inserted therein to the host device.

    Abstract translation: 插入到图像形成装置中的多个存储卡槽中的存储卡之间自动切换的方法分别包括确定存储卡类型和插入到多个存储卡插槽中的多个存储卡，确定是否切换存储器 当确定存储卡的切换是适当的时，并且与下一个存储卡交换数据时，卡片是合适的，根据预定义的顺序自动地从当前存储卡切换到下一个存储卡。 在连接到具有多个存储卡插槽的多存储器读卡器的主机设备中配置可移动磁盘驱动器的方法包括：分别确定存储卡是否插入到多个存储卡插槽中，计数多个存储卡插槽 具有插入其中的对应的存储卡，并且将具有插入其中的相应存储卡的计数的存储卡插槽的数量发送到主机设备。

    Printing system and method thereof
    7.
    发明申请
    Printing system and method thereof 失效
    印刷系统及其方法

    公开(公告)号：US20050219556A1

    公开(公告)日：2005-10-06

    申请号：US11076916

    申请日：2005-03-11

    Applicant: Dong-hoon Lee ,  Chan-sup Kim

    Inventor： Dong-hoon Lee ,  Chan-sup Kim

    IPC: B41B1/00 ,  G06F3/12 ,  G06F17/00

    CPC classification number: G06F3/1237 ,  G06F3/1204 ,  G06F3/1285

    Abstract: A printing system includes a host which includes a storage having one or more folders, establishes one of the folders as a target folder, and generates path information of the target folder, and an image forming apparatus to acquire a list of image files stored in the target folder based on the path information, to request thumbnail images corresponding to the image files on the list from the host, and to display the thumbnail images on a predetermined display unit by downloading the thumbnail images from the host. The host converts the image files stored in the target folder into the thumbnail images and transmits the thumbnail images to the image forming apparatus, and the image forming apparatus selects at least one among the thumbnail images and prints an image file corresponding to the selected thumbnail image by downloading the image file from the host.

    Abstract translation: 打印系统包括主机，其包括具有一个或多个文件夹的存储器，将文件夹中的一个建立为目标文件夹，并且生成目标文件夹的路径信息，以及图像形成装置，用于获取存储在该文件夹中的图像文件的列表 基于路径信息的目标文件夹，从主机请求对应于列表上的图像文件的缩略图，并且通过从主机下载缩略图来在预定的显示单元上显示缩略图。 主机将存储在目标文件夹中的图像文件转换成缩略图，并将缩略图发送到图像形成装置，并且图像形成装置选择缩略图中的至少一个，并打印与所选缩略图对应的图像文件 通过从主机下载图像文件。

    Digital transmission apparatus and method and digital reception apparatus
    8.
    发明授权
    Digital transmission apparatus and method and digital reception apparatus 有权
    数字传输装置和方法以及数字接收装置

    公开(公告)号：US09281987B2

    公开(公告)日：2016-03-08

    申请号：US12610695

    申请日：2009-11-02

    Applicant: Jong-sook Hur ,  Dong-hoon Lee

    Inventor： Jong-sook Hur ,  Dong-hoon Lee

    IPC: H04L1/00 ,  H04L27/26

    CPC classification number: H04L27/2626 ,  H04L1/0031 ,  H04L1/0079 ,  H04L27/2602 ,  H04L27/2647 ,  H04L2001/0093

    Abstract: A digital transmission apparatus and a method thereof and a digital reception apparatus are provided. A frame body processor converts incoming data and outputs a frame body, a system information generator generates system information, which is necessary for processing the data at a reception apparatus, by using a different processing method from the frame body processing method of the frame body processor, a frame generator multiplexes data of the frame body, a header of the frame, and the system information, thereby generating a frame, and a signal processor up-coverts a signal of the frame and transmits the signal to the reception apparatus.

    Abstract translation: 提供数字传输装置及其方法和数字接收装置。 帧体处理器转换输入数据并输出帧体，系统信息生成器通过使用与帧体处理器的帧体处理方法不同的处理方法来生成在接收装置处理数据所必需的系统信息 帧生成器复用帧体的数据，帧的头部和系统信息，从而生成帧，并且信号处理器对帧的信号进行上传，并将该信号发送到接收装置。

    Image forming apparatus, host device and print controlling method
    10.
    发明申请
    Image forming apparatus, host device and print controlling method 有权
    图像形成装置，主机装置和打印控制方法

    公开(公告)号：US20110299859A1

    公开(公告)日：2011-12-08

    申请号：US12926566

    申请日：2010-11-24

    Applicant: Dong-hoon Lee

    Inventor： Dong-hoon Lee

    IPC: G03G15/00 ,  G06F15/00

    CPC classification number: G03G15/5075 ,  G03G15/502 ,  G03G2215/00109

    Abstract: An image forming apparatus is provided. The image forming apparatus includes a search unit which broadcasts a search message for searching for a connectable host device, a communication interface unit which receives a response message for notifying that a print job is executable from host devices in response to the search message, a user interface unit which displays host devices corresponding to the received response message and receives a selection from a user regarding a host device to be connected from among the displayed host devices, and a controller which controls the communication interface unit to transmit a connection message for requesting connection with the image forming apparatus to the selected host device.

    Abstract translation: 提供一种图像形成装置。 图像形成装置包括：广播用于搜索可连接主机设备的搜索消息的搜索单元;响应于搜索消息从主机设备接收用于通知打印作业可执行的响应消息的通信接口单元;用户 接口单元，其显示与所接收的响应消息相对应的主机设备，并从用户接收关于要显示的主机设备中要连接的主机设备的选择;以及控制器，其控制所述通信接口单元发送用于请求连接的连接消息 将图像形成装置连接到所选择的主机装置。

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