公开(公告)号：US08005225B2

公开(公告)日：2011-08-23

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: H04L29/00

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。

公开(公告)号：US07634029B2

公开(公告)日：2009-12-15

申请号：US11208754

申请日：2005-08-23

Applicant: Dong-hoon Lee

Inventor： Dong-hoon Lee

IPC: H04L27/00

CPC classification number: H04L7/0278

Abstract: A symbol timing recovery apparatus used with a VSB-type receiver and a method of the same. In order for the symbol timing recovery, error information is generated and used utilizing a band edge component maximization (BECM) of a frequency band as well as an upper frequency band. Therefore, the symbol timing recovery can be more effectively achieved even when the upper frequency band is damaged due to multi-path components. Also, efficiency of the overall timing recovery can be improved by using the lower frequency band as well as the upper frequency band of the received signal in performing the symbol timing recovery. As a result, deterioration of the receiving system including the symbol timing recovery apparatus can be prevented.

Abstract translation: 与VSB型接收机一起使用的符号定时恢复装置及其方法。 为了符号定时恢复，利用频带的带边缘分量最大化（BECM）以及高频带来生成和使用错误信息。 因此，即使当由于多路径分量而导致较高频带被损坏时，也能更有效地实现符号定时恢复。 此外，通过在执行符号定时恢复时使用较低频带以及接收信号的较高频带，可以提高整体定时恢复的效率。 结果，可以防止包括符号定时恢复装置的接收系统的劣化。

公开(公告)号：US07295627B2

公开(公告)日：2007-11-13

申请号：US10887310

申请日：2004-07-09

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

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

IPC: H04L27/00

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。

公开(公告)号：US20060203944A1

公开(公告)日：2006-09-14

申请号：US11357335

申请日：2006-02-21

Applicant: Jung-won Kwak ,  Dong-hoon Lee

Inventor： Jung-won Kwak ,  Dong-hoon Lee

IPC: H04L27/06 ,  H04L27/22

CPC classification number: H04L7/042

Abstract: An apparatus to detect a sync signal, a VSB receiver using the same, and a method thereof. The apparatus includes a plurality of partial correlators to calculate a first partial correlation value between a sub sequence of a training sequence and an “I” signal of a received signal that corresponds to a range of a sub sequence and a second partial correlation value between the sub sequence of the training sequence and a “Q” signal of the received signal, and calculating the first partial correlation value and the second partial correlation value for each of the predetermined number of sub sequences, a plurality of squarers to square the first and second partial correlation values for each sub sequence, respectively, a plurality of adders to add the squared first and second partial correlation values for each sub sequence and add the added squared partial correlation values of all the sub sequences to provide a correlation signal between the training sequence and a corresponding portion of the received signal, a maximum value detection unit to detect a maximum one of the added partial correlation values of the sub sequences from the correlation signal, and a position detection unit to detect a position of the detected maximum value as the sync signal of the received signal.

Abstract translation: 用于检测同步信号的装置，使用其的VSB接收机及其方法。 该装置包括多个部分相关器，用于计算训练序列的子序列与对应于子序列的范围的接收信号的“I”信号和第二部分相关值之间的第一部分相关值 训练序列的子序列和接收信号的“Q”信号，并且为每个预定数量的子序列计算第一部分相关值和第二部分相关值，多个平方器使第一和第二 每个子序列的部分相关值分别是多个加法器，用于为每个子序列添加平方的第一和第二部分相关值，并将所有子序列的相加的平方部分相关值相加，以在训练序列之间提供相关信号 和接收信号的相应部分，最大值检测单元，用于检测所添加的最大值 来自相关信号的子序列的部分相关值，以及检测检测到的最大值的位置作为接收信号的同步信号的位置检测单元。

公开(公告)号：US20060203929A1

公开(公告)日：2006-09-14

申请号：US11300340

申请日：2005-12-15

Applicant: Jung-won Kwak ,  Dong-hoon Lee

Inventor： Jung-won Kwak ,  Dong-hoon Lee

IPC: H04L27/02 ,  H04L27/06

CPC classification number: H04L25/03012 ,  H04N5/211

Abstract: A sync signal detecting apparatus, a method thereof, and a Vestigial Side Band receiver employing the apparatus. The apparatus includes a correlator to compute one or more correlation values of the received signal, a starting point determiner to detect a location of a received signal having a maximum correlation value within an arbitrary period, and to determine a location a predetermined interval from the detected location as a starting point, a main signal detector to determine a signal having a value obtained by multiplying one of the correlation values by a predetermined number that is larger than the maximum correlation value as a main signal among signals during the arbitrary period, and a location detector to detect and provide a location of the main signal to the equalizer. Accordingly, performance of an equalizer can be maximized by determining the main signal variably according to characteristics of the equalizer.

Abstract translation: 一种同步信号检测装置，其方法和采用该装置的残留边带接收机。 该装置包括：相关器，用于计算接收信号的一个或多个相关值;起始点确定器，用于检测在任意周期内具有最大相关值的接收信号的位置;以及确定从所检测到的预定间隔的位置 位置作为起始点，主信号检测器，用于确定具有通过将相关值之一乘以大于最大相关值的预定数量获得的值作为任意时段中的信号之间的主信号的信号，以及 位置检测器，用于检测并提供主信号到均衡器的位置。 因此，可以通过根据均衡器的特性可变地确定主信号来最大化均衡器的性能。

公开(公告)号：US20060114248A1

公开(公告)日：2006-06-01

申请号：US11288327

申请日：2005-11-29

Applicant: Dong-hoon Lee ,  Young-chan Kim

Inventor： Dong-hoon Lee ,  Young-chan Kim

IPC: G09G5/00

CPC classification number: G09G5/006 ,  G09G2370/047

Abstract: The present invention relates to a display apparatus including an input unit receiving a digital image signal and an analog image signal, a first storage unit storing digital display identification data, a second storage unit storing analog display identification data, a switching unit connecting the first storage unit or the second storage unit to the input unit, and a control unit controlling the switching unit so that display identification data having a priority is output through the input unit when the analog image signal and the digital image signal are simultaneously received.

Abstract translation: 本发明涉及一种显示装置，包括接收数字图像信号和模拟图像信号的输入单元，存储数字显示识别数据的第一存储单元，存储模拟显示识别数据的第二存储单元，连接第一存储器 单元或第二存储单元连接到输入单元，以及控制单元，其控制切换单元，使得当同时接收模拟图像信号和数字图像信号时，通过输入单元输出具有优先权的显示识别数据。

公开(公告)号：US20060045210A1

公开(公告)日：2006-03-02

申请号：US11208754

申请日：2005-08-23

Applicant: Dong-hoon Lee

Inventor： Dong-hoon Lee

IPC: H04L27/22

CPC classification number: H04L7/0278

Abstract: A symbol timing recovery apparatus used with a VSB-type receiver and a method of the same. In order for the symbol timing recovery, error information is generated and used utilizing a band edge component maximization (BECM) of a frequency band as well as an upper frequency band. Therefore, the symbol timing recovery can be more effectively achieved even when the upper frequency band is damaged due to multi-path components. Also, efficiency of the overall timing recovery can be improved by using the lower frequency band as well as the upper frequency band of the received signal in performing the symbol timing recovery. As a result, deterioration of the receiving system including the symbol timing recovery apparatus can be prevented.

公开(公告)号：US20060045209A1

公开(公告)日：2006-03-02

申请号：US11199077

申请日：2005-08-09

Applicant: Dong-hoon Lee

Inventor： Dong-hoon Lee

IPC: H04L27/22

CPC classification number: H04L27/0014 ,  H04L2027/003 ,  H04L2027/0053 ,  H04L2027/0067

Abstract: A carrier recovery apparatus usable with a VSB receiver and a method thereof. The carrier recovery apparatus is capable of recovering a carrier even though a pilot signal may be corrupted due to multi-path characteristics of a channel. Accordingly, the carrier recovery apparatus performs a BECM (Band Edge Component Maximization) algorithm on upper and lower sidebands of a received signal to generate phase information therefrom. The phase information is combined in a combiner. Since the BECM algorithm is performed on the upper and lower sidebands, it is possible to execute the carrier recovery even through the upper sideband of a received signal may be corrupted. Therefore, the carrier recovery apparatus can prevent performance degradation of the VSB receiver caused by corruption in the pilot signal.

Abstract translation: 一种可用于VSB接收机的载波恢复装置及其方法。 即使导频信号由于信道的多路径特性而被破坏，载波恢复装置也能够恢复载波。 因此，载波恢复装置对接收信号的上边带和下边带执行BECM（带边部分最大化）算法，从而生成相位信息。 相位信息在组合器中组合。 由于在上边带和下边带执行BECM算法，因此即使通过接收信号的上边带也可能执行载波恢复可能被破坏。 因此，载波恢复装置可以防止由导频信号中的损坏导致的VSB接收机的性能劣化。

公开(公告)号：US20050062724A1

公开(公告)日：2005-03-24

申请号：US10927112

申请日：2004-08-27

Applicant: Young-chan Kim ,  Dong-hoon Lee

Inventor： Young-chan Kim ,  Dong-hoon Lee

IPC: A61B5/02 ,  G09G5/00 ,  H04N5/445 ,  H04N5/63

CPC classification number: H04N5/44513 ,  H04N5/63 ,  H04N21/485

Abstract: A display device having a display to display a picture thereon, a power supply to supply power to the display, and a parameter setter to set a predetermined adjustment parameter. The display further includes one shared key and a controller. The controller can receive a push input signal from the sheared key, divide a duration time of the push input signal into a plurality of duration time sections, and control the power supply and the parameter setter to turn on/off the display device when the push input signal belongs to a first duration time section, to implement a parameter setting mode when the push input signal belongs to a second duration time section, and to implement a parameter executing mode when the push input signal belongs to a third duration time section. With this configuration, a display device in which only one key operation is enough to control a power supplying system and various adjustment parameters can be set as desired is provided.

Abstract translation: 具有显示图像的显示器的显示装置，向显示器供电的电源以及用于设定预定调整参数的参数设定器。 显示器还包括一个共享密钥和控制器。 控制器可以接收来自剪切键的推入输入信号，将推入输入信号的持续时间划分成多个持续时间段，并且当推动时控制电源和参数设置器打开/关闭显示设备 输入信号属于第一持续时间部分，以在按压输入信号属于第二持续时间段时实现参数设置模式，并且当推入输入信号属于第三持续时间段时实现参数执行模式。 利用这种配置，可以根据需要设置其中仅一个键操作足以控制供电系统和各种调整参数的显示装置。

公开(公告)号：US08797572B2

公开(公告)日：2014-08-05

申请号：US12123736

申请日：2008-05-20

Applicant: Dong-hoon Lee

Inventor： Dong-hoon Lee

IPC: G06F3/12 ,  H04N1/00

CPC classification number: H04N1/00222 ,  H04N2201/0093 ,  H04N2201/3214 ,  H04N2201/3215 ,  H04N2201/3216 ,  H04N2201/3221 ,  H04N2201/3232

Abstract: A network scan apparatus includes: a scanner including a scanning unit to scan a document and generate an image file based on the scanned document, a transmitting unit to transmit the image file, and an output selection unit to select whether to output scan file information; an output device, connected to the scanner, via a network, to output the scan file information according to whether the scan file information is selected to be output after a scanning operation; and a host computer connected to the scanner and the output device via the network, to collect the scan file information transmitted from the scanner, and transmit the scan file information to the output device.

Abstract translation: 网络扫描装置包括：扫描仪，包括：扫描单元，用于扫描文档并基于扫描的文档生成图像文件;发送单元，用于发送图像文件;以及输出选择单元，用于选择是否输出扫描文件信息; 通过网络连接到扫描仪的输出设备，根据扫描文件信息是否被选择以在扫描操作之后被输出来输出扫描文件信息; 以及通过网络连接到扫描仪和输出设备的主计算机，以收集从扫描仪发送的扫描文件信息，并将扫描文件信息发送到输出设备。