公开(公告)号：US07944964B2

公开(公告)日：2011-05-17

申请号：US11634495

申请日：2006-12-06

申请人： Jae-Ho Lee ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Jae-Ho Lee ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H03H7/30

CPC分类号： H04L25/0307 ,  H04L2025/0349 ,  H04L2025/0363 ,  H04L2025/03656 ,  H04L2025/03687 ,  H04L2025/037

摘要： A decision feedback equalizing apparatus selectively using a feedback filter and a method thereof are provided. The apparatus includes: an equalizing unit including a feed forward filter (FFF) for correcting a distorted transmission channel by receiving a match-filtered signal and a feedback filter (FBF) for reducing inter symbol interference ISI of the corrected transmission channel for driving only the FFF in a blind mode and driving the FFF and the FBF in a decision directed mode; a diverge/converge determining unit for determining whether the decision feedback equalizing apparatus is diverged or converged using a unit square error obtained through a least unit square algorithm; and a filter controlling unit for controlling the equalizing unit in a blind mode if the decision feedback equalizing apparatus is determined as divergence, and for controlling the equalizing unit in a decision directed mode if the decision feedback equalizing apparatus is determined as convergence.

摘要翻译： 提供了选择性地使用反馈滤波器的判定反馈均衡装置及其方法。 该装置包括：均衡单元，包括用于通过接收匹配滤波信号来校正失真传输信道的前馈滤波器（FFF）和用于减少仅用于驱动的​​纠错传输信道的符号间干扰ISI的反馈滤波器（FBF） FFF处于盲模式，并以决策导向模式驱动FFF和FBF; 分散/收敛确定单元，用于使用通过最小单位平方算法获得的单位平方误差来确定判定反馈均衡装置是否发散或收敛; 以及滤波器控制单元，如果判定反馈均衡装置被确定为发散，则以盲模式控制均衡单元，并且如果判定反馈均衡装置被确定为收敛则用于以判决指导模式控制均衡单元。

公开(公告)号：US20070133672A1

公开(公告)日：2007-06-14

申请号：US11634495

申请日：2006-12-06

申请人： Jae-Ho Lee ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Jae-Ho Lee ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H03H7/30

CPC分类号： H04L25/0307 ,  H04L2025/0349 ,  H04L2025/0363 ,  H04L2025/03656 ,  H04L2025/03687 ,  H04L2025/037

摘要： A decision feedback equalizing apparatus selectively using a feedback filter and a method thereof are provided. The apparatus includes: an equalizing unit including a feed forward filter (FFF) for correcting a distorted transmission channel by receiving a match-filtered signal and a feedback filter (FBF) for reducing inter symbol interference ISI of the corrected transmission channel for driving only the FFF in a blind mode and driving the FFF and the FBF in a decision directed mode; a diverge/converge determining unit for determining whether the decision feedback equalizing apparatus is diverged or converged using a unit square error obtained through a least unit square algorithm; and a filter controlling unit for controlling the equalizing unit in a blind mode if the decision feedback equalizing apparatus is determined as divergence, and for controlling the equalizing unit in a decision directed mode if the decision feedback equalizing apparatus is determined as convergence.

摘要翻译： 提供了选择性地使用反馈滤波器的判定反馈均衡装置及其方法。 该装置包括：均衡单元，包括用于通过接收匹配滤波信号来校正失真传输信道的前馈滤波器（FFF）和用于减少仅用于驱动的​​纠错传输信道的符号间干扰ISI的反馈滤波器（FBF） FFF处于盲模式，并以决策导向模式驱动FFF和FBF; 分散/收敛确定单元，用于使用通过最小单位平方算法获得的单位平方误差来确定判定反馈均衡装置是否发散或收敛; 以及滤波器控制单元，如果判定反馈均衡装置被确定为发散，则以盲模式控制均衡单元，并且如果判定反馈均衡装置被确定为收敛则用于以判决指导模式控制均衡单元。

公开(公告)号：US08789088B2

公开(公告)日：2014-07-22

申请号：US13077470

申请日：2011-03-31

申请人： Han-Seung Koo ,  O-Hyung Kwon ,  Dong-Joon Choi ,  Soo-In Lee

发明人： Han-Seung Koo ,  O-Hyung Kwon ,  Dong-Joon Choi ,  Soo-In Lee

IPC分类号： H04N7/16 ,  H04N7/167 ,  H04N21/418

CPC分类号： H04N7/1675 ,  H04N21/23617 ,  H04N21/4181 ,  H04N21/4383 ,  H04N21/4433 ,  H04N21/4627 ,  H04N21/8193

摘要： A method for installing different security clients for channels in a terminal in a conditional access system includes: searching one or more channels searchable in the terminal; requesting, for respective searched channels, security clients necessary for receiving pay programs to be transmitted through the searched channels, to a broadcasting station which takes charge of the searched channels; and downloading and installing, for respective searched channels, the requested security clients from the broadcasting station.

摘要翻译： 一种用于在条件访问系统中的终端中安装用于信道的不同安全客户端的方法包括：搜索终端中可搜索的一个或多个信道; 向相应搜索的频道请求用于接收通过所搜索的频道发送的付费节目所需的安全客户机，向负责搜索的频道的广播电台请求; 并且从各广播台下载和安装所请求的安全客户端。

公开(公告)号：US07945609B2

公开(公告)日：2011-05-17

申请号：US11541213

申请日：2006-09-29

申请人： Eung-Don Lee ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Eung-Don Lee ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： G06F1/02

CPC分类号： G06F1/0353

摘要： A method for composing a lookup table and searching indexes thereof is provided. The method includes the steps of: a) composing a lookup table using a symmetry of a sine and a cosine function; b) changing and setting a gain of a DCO by reflecting a lookup table size in the DCO; c) transforming an absolute value of a DCO output to an integer value; d) determining a range of the integer value of the DCO output; e) searching indexes of a sine and an cosine function according to the range of the integer value of the DCO output; and f) correcting a sign of a lookup table value corresponding to the searched index of the sine function and a sign of a lookup table value corresponding to the searched index of the cosine function according to the range of integers of the DCO output.

摘要翻译： 提供了一种组合查找表和搜索索引的方法。 该方法包括以下步骤：a）使用正弦和余弦函数的对称来构成查找表; b）通过反映DCO中的查找表大小来更改和设置DCO的增益; c）将DCO输出的绝对值转换为整数值; d）确定DCO输出的整数值的范围; e）根据DCO输出的整数值的范围，搜索正弦和余弦函数的索引; 以及f）根据所述DCO输出的整数的范围，校正与搜索到的正弦函数的索引相对应的查找表值的符号和与所搜索的余弦函数的索引相对应的查找表值的符号。

公开(公告)号：US20070127468A1

公开(公告)日：2007-06-07

申请号：US11606152

申请日：2006-11-29

申请人： Dong-Joon Choi ,  Woong-Shik You ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Dong-Joon Choi ,  Woong-Shik You ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04L12/56

CPC分类号： H04L29/06 ,  H04L12/2801 ,  H04L12/2856 ,  H04L12/2861

摘要： Provided is an IP data transmission apparatus using a legacy transmission system and a broadband downstream transmission system in a HFC network. The IP data transmission apparatus includes: an headend unit for receiving data from an application server system that is a service providing apparatus, splitting the received data into general user data and management message, determining whether the general user is transmitted using a broadband or an existing service band, and transmitting the general user data through the HFC network; and a user cable terminal unit for receiving the split data transmitted from the headend unit through the HFC network, transmitting the received data to an IP based user device, and transferring the management message to the IP based user device through the legacy transmission system.

摘要翻译： 提供了一种在HFC网络中使用传统传输系统和宽带下行传输系统的IP数据传输设备。 IP数据发送装置包括：前端单元，用于从作为服务提供装置的应用服务器系统接收数据，将接收到的数据分割成一般的用户数据和管理消息，确定是否使用宽带或现有的 服务频段，并通过HFC网络传输一般用户数据; 以及用户电缆终端单元，用于通过HFC网络接收从头端单元发送的分割数据，将接收的数据发送到基于IP的用户设备，并通过传统传输系统将管理消息传送到基于IP的用户设备。

公开(公告)号：US20070121597A1

公开(公告)日：2007-05-31

申请号：US11520882

申请日：2006-09-14

申请人： Eung-Don Lee ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Eung-Don Lee ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04L12/66

CPC分类号： H04L43/0829 ,  H04L29/06027 ,  H04L43/087 ,  H04L43/106 ,  H04L47/10 ,  H04L65/604 ,  H04L65/605 ,  H04L65/608 ,  H04L65/80

摘要： Provided is an apparatus and method for processing a Voice over Internet Protocol (VoIP) packet with multiple frames. The apparatus includes: a transmission packet processing unit for receiving a frame from a speech codec, forming a Real-time Transport Protocol (RTP) payload in a form of multiple frames and transmitting the RTP payload to an RTP stack; and a reception packet processing unit for receiving an RTP packet from the RTP stack, storing the RTP packet in a jitter buffer, performing dejittering, separating frames from the RTP payload one by one and transmitting the frames to the speech codec.

摘要翻译： 提供了一种用于处理具有多个帧的因特网协议语音（VoIP）分组的装置和方法。 该装置包括：发送分组处理单元，用于从语音编解码器接收帧，形成多帧形式的实时传输协议（RTP）有效载荷，并将RTP有效载荷发送到RTP栈; 以及接收分组处理单元，用于从RTP堆栈接收RTP分组，将RTP分组存储在抖动缓冲器中，执行去抖动，逐帧分离帧与RTP有效载荷并将帧发送到语音编解码器。

公开(公告)号：US20060133398A1

公开(公告)日：2006-06-22

申请号：US11259969

申请日：2005-10-26

申请人： Dong-Joon Choi ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Dong-Joon Choi ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04L12/56 ,  H04J3/26 ,  H04J3/06 ,  H04L12/28

CPC分类号： H04L12/2801 ,  H04J3/085 ,  H04J2203/0042 ,  H04J2203/006

摘要： Provided is an apparatus for transmitting/receiving communication and broadcasting data. The transmitting apparatus includes: a mapper for mapping inputted broadcasting data into a transport stream according to a predetermined standard; a broadcasting buffer for temporarily storing the mapped transport stream for multiplexing; a communication buffer for temporarily storing a communication data stream for multiplexing; a counter for measuring data rate information of a broadcasting stream inputted between two SYNC signals and outputting the measured data rate; an SYNC signal generator for generating an SYNC signal for synchronization between the transmitting apparatus and a receiving part and periodically transmitting the generated SYNC signal; and a multiplexer for multiplexing a communication stream, a broadcasting stream, and an SYNC signal.

公开(公告)号：US20050144634A1

公开(公告)日：2005-06-30

申请号：US10971167

申请日：2004-10-22

申请人： Han-Seung Koo ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Han-Seung Koo ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04K1/00 ,  H04L9/00 ,  H04N7/167

CPC分类号： H04N21/63775 ,  H04N7/1675 ,  H04N21/2347 ,  H04N21/2543 ,  H04N21/26613 ,  H04N21/2668 ,  H04N21/4405 ,  H04N21/4627 ,  H04N21/47211 ,  H04N21/6581 ,  H04N21/8355

摘要： Disclosed is a method for providing a pay-TV service based on a session key. The method includes the steps of: selecting a desired pay event using a program guide displayed on a system of the subscriber and achieving a subscriber private key; filling out a service application based on service information, signing the service application based on a digital signature scheme and encrypting the digital signed service application; transmitting the encrypted service application to a broadcasting station and waiting a response of the broadcasting station; receiving a session key and a subscription authority message from the broadcasting station, decrypting the session key and the subscription authority message and verifying the digital signature; decrypting a channel key, achieving a control word, descrambling event audio/video streams and watching the event; and if the event is terminated or the session key is not effective, stopping watching the event and deleting the session key.

摘要翻译： 公开了一种基于会话密钥提供付费电视服务的方法。 该方法包括以下步骤：使用在订户的系统上显示的节目指南来选择所需的付费事件并实现用户私钥; 基于服务信息填写服务应用程序，基于数字签名方案签署服务应用程序，加密数字签名服务应用程序; 将加密的服务应用发送到广播站并等待广播电台的响应; 从广播站接收会话密钥和订阅授权消息，解密会话密钥和订阅授权消息并验证数字签名; 解密通道密钥，实现控制字，解扰事件音频/视频流并观看事件; 如果事件终止或会话密钥无效，则停止观察事件并删除会话密钥。

公开(公告)号：US08279888B2

公开(公告)日：2012-10-02

申请号：US11861672

申请日：2007-09-26

申请人： Seung-Eun Hong ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Seung-Eun Hong ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04L12/42

CPC分类号： H04L12/4641

摘要： Provided are an apparatus and method for upstream transmission of variable bit rate traffic in a Hybrid Fiber Coaxial (HFC) network. The apparatus includes: a VoIP signal processing unit for digitizing a voice of a speaker to create a voice packet, detecting a mute section to suppress packet generation, and generating an Service identification (SID) packet in the mute section; a storage unit for storing the voice packet and the SID packet created by the VoIP signal processing unit and notifying information on the stored packets; a VoIP activity determining unit for determining a voice activity based on the information on the stored packets notified from the storage unit; and a packet processing unit for including the voice activity transferred from the VoIP activity determining unit in the packets from the storage unit to encapsulate them and transmit it to a network device.

摘要翻译： 提供了一种用于混合光纤同轴（HFC）网络中可变比特率业务的上行传输的装置和方法。 该装置包括：VoIP信号处理单元，用于数字化扬声器的语音以创建语音分组，检测静音部分以抑制分组生成，以及在静音部分中生成服务标识（SID）分组; 存储单元，用于存储由VoIP信号处理单元创建的语音分组和SID分组，并通知关于所存储分组的信息; VoIP活动确定单元，用于基于从存储单元通知的关于所存储的分组的信息来确定语音活动; 以及分组处理单元，用于将来自所述VoIP活动确定单元的所述语音活动包括在来自所述存储单元的分组中，以将其封装并将其发送到网络设备。

公开(公告)号：US07848365B2

公开(公告)日：2010-12-07

申请号：US11452486

申请日：2006-06-13

申请人： Joon-Young Jung ,  Eun-Jung Kwon ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Joon-Young Jung ,  Eun-Jung Kwon ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04J3/04

CPC分类号： H04N21/6118 ,  H04N7/17354 ,  H04N21/2221 ,  H04N21/23608 ,  H04N21/2541 ,  H04N21/25875 ,  H04N21/2668 ,  H04N21/4181 ,  H04N21/4305 ,  H04N21/4383 ,  H04N21/43853 ,  H04N21/4508

摘要： Provided are an apparatus for receiving cable broadcasting programs and a multiplexer and a de-multiplexer thereof for reducing data amount processed in a Cable CARD and for correcting synchronization of descrambled data stream. The apparatus includes: a multiplexing unit for filtering a broadcasting stream to select only programs selected by a viewer and multiplexing the selected programs; a conditional-access processing unit for receiving the multiplexed streams and processing the multiplexed streams for conditional access (descrambling); and a de-multiplexing unit for de-multiplexing the multi stream from the conditional-access processing unit and correcting a program clock reference (PCR).

摘要翻译： 提供了一种用于接收有线广播节目的装置和用于减少在有线电视卡中处理的数据量并用于校正解扰数据流的同步的多路复用器和解复用器。 该装置包括：多路复用单元，用于过滤广播流以仅选择由观看者选择的节目并且复用所选择的节目; 条件访问处理单元，用于接收多路复用的流并处理用于条件访问（解扰）的多路复用流; 以及解复用单元，用于从条件访问处理单元解复用多流，并校正程序时钟参考（PCR）。