公开(公告)号：US20070274730A1

公开(公告)日：2007-11-29

申请号：US11630160

申请日：2004-12-30

申请人： Han-Seung Koo ,  O-Hyung Kwon ,  Woongshik You ,  Soo-in Lee

发明人： Han-Seung Koo ,  O-Hyung Kwon ,  Woongshik You ,  Soo-in Lee

IPC分类号： H04N7/22

CPC分类号： H04H20/69 ,  H04H60/97 ,  H04J14/0298 ,  H04N7/10 ,  H04N7/17309 ,  H04N7/22 ,  H04N21/4402 ,  H04N21/6118

摘要： Provided is an outdoor optical node unit (ONU) and method for converting/combining frequencies, and an apparatus and method for converting/combining frequencies in a cable television headend system. The optical node unit (ONU) includes: a downstream optic-to-electric converting unit for converting a downstream optic signal transferred through an optical cable network from a headend system to a downstream electric signal; a down frequency converting and combining unit for isolating the downstream electric signal to a broadcasting signal transmitted as a coaxial cable usable frequency band (In-Band signal) and a band signal higher than the coaxial cable usable frequency band (Super-Band (SB) signal), isolating each of channel signals in the SB signal, converting the isolated channel signals to downstream signals in a coaxial cable usable frequency band, and combining each of the frequency-converted downstream signals with the In-Band signal to generate a coaxial cable usable frequency band downstream signal; an up/down band isolating unit for outputting each of the coaxial cable usable frequency band downstream signals inputted from the down frequency converting and combining unit to a corresponding coaxial cable, or dividing an upstream signal transferred through a coaxial cable from each of subscriber's sub cells to a cable TV upstream frequency band signal and In-Band upstream channel band signal (IUC band signal) which is other upstream channel in a coaxial cable usable frequency band excepting the cable TV upstream frequency band, and outputting the cable TV upstream frequency band signal and the IUC band signal to an upstream frequency converting and combining unit; an upstream frequency converting and combining unit for converting the upstream signals which are the cable TV upstream frequency band signal and the IUC band signal inputted from the up/down band isolating unit to channels not overlapped in the coaxial cable usable frequency band, combining the converted channel signals to generate a coaxial cable usable frequency band upstream electric signal; an up electric-to-optic converting unit for receiving the optical cable usable frequency band upstream electric signal, converting the optical cable usable frequency band upstream electric signal to an upstream optical signal, and outputting the upstream optical signal to the headend system through an optical cable network; and a local oscillating unit for generating local oscillating signal for frequency-conversion, and providing the generated local oscillating signal to the down frequency converting and combining unit or the up frequency converting and combining unit.

公开(公告)号：US20070133541A1

公开(公告)日：2007-06-14

申请号：US11525766

申请日：2006-09-22

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

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

IPC分类号： H04L12/56

CPC分类号： H04L12/2801 ,  H04L1/0083 ,  H04N21/434 ,  H04N21/4381 ,  H04N21/4385

摘要： Provided are a multiplexing and demultiplexing apparatus and method for delivering an MPEG-2 TS packet error signal through a CableCARD interface. In the multiplexing apparatus, a TS packet reception unit receives TS packets, and a pre-header generation unit generates pre-headers corresponding to the received TS packets. A pre-header insertion unit inserts the pre-headers in front of the received TS packets to generate cable MPEG packets (CMPs), and an output FIFO unit stores the CMPs. A FIFO control unit transfers the CMPs without collision with CMPS of different channels, and an output signal generation unit generates output signals from the CMPs of the different channels.

摘要翻译： 提供了一种用于通过CableCARD接口传送MPEG-2TS分组错误信号的复用和解复用装置和方法。 在多路复用装置中，TS分组接收部接收TS分组，前标题生成部生成与所接收的TS分组对应的预标题。 预标题插入单元将预标题插入在接收的TS分组之前，以产生有线MPEG分组（CMP），并且输出FIFO单元存储CMP。 FIFO控制单元传送CMP而不与不同通道的CMPS发生冲突，输出信号生成单元从不同通道的CMP产生输出信号。

公开(公告)号：US20070074256A1

公开(公告)日：2007-03-29

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： H04N7/173 ,  H04N7/16

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）。

公开(公告)号：US20060130114A1

公开(公告)日：2006-06-15

申请号：US11218810

申请日：2005-09-01

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

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

IPC分类号： H04N7/173 ,  H04N7/16

CPC分类号： H04N7/163 ,  H04N7/17318 ,  H04N21/4122 ,  H04N21/4332 ,  H04N21/4334 ,  H04N21/43615 ,  H04N21/43622

摘要： Provided are a data server for interactive data broadcasting service and an interactive data broadcasting service providing method using the same. The present invention provides a data broadcasting service where users can participate in real-time by processing messages inputted through a return channel according to each content. The data server includes: a contents registering unit for registering a content of data broadcasting service in a file system; a storage for managing and storing signaling information of the registered content; and a data processing unit for defining an application message for the content supporting an interactive service, identifying the kind of the content by receiving the message inputted through a return channel, updating the content by analyzing the inputted message based on structural information of the message to perform interactive data broadcasting service in real-time.

摘要翻译： 提供了一种用于交互式数据广播服务的数据服务器和使用其的交互式数据广播服务提供方法。 本发明提供一种数据广播服务，其中用户可以通过根据每个内容处理通过返回信道输入的消息来实时参与。 数据服务器包括：内容登记单元，用于在文件系统中注册数据广播服务的内容; 用于管理和存储注册内容的信令信息的存储器; 以及数据处理单元，用于定义用于支持交互式服务的内容的应用消息，通过接收通过返回信道输入的消息来识别内容的种类，通过基于消息的结构信息分析所输入的消息来更新内容 实时执行交互式数据广播服务。

公开(公告)号：US20050141712A1

公开(公告)日：2005-06-30

申请号：US10868508

申请日：2004-06-14

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： H04N7/167 ,  H04N7/173

CPC分类号： H04L9/0825 ,  G06Q20/102 ,  G06Q40/12 ,  H04L9/0844 ,  H04L9/3247 ,  H04N7/1675 ,  H04N7/17309 ,  H04N7/17363 ,  H04N21/2543 ,  H04N21/25816 ,  H04N21/4181 ,  H04N21/47202 ,  H04N21/475 ,  H04N21/482 ,  H04N21/63345

摘要： A method for subscribing a service and distributing encryption key based on public-key encryption algorithm in a digital CATV system are disclosed. In accordance with an aspect of the present invention, there is provided a method including the steps of: a) generating a charged service application message; b) generating a session connection request message, signing based on a digital signature scheme with appendix on the session connection request message and transmitting to the head-end; c) generating a symmetric-based session key, signing a digital signature on the key, encrypting based on a public-key of the subscriber, transmitting the session key to the subscriber; decrypting the session key message, verifying the digital signature, extracting the session key from the session key message and storing at a Condition Access Module; and d) signing a digital signature on the charged service request message, encrypting using the extracted session key and transmitting to the head-end.

摘要翻译： 公开了一种在数字CATV系统中基于公开密钥加密算法订阅服务并分发加密密钥的方法。 根据本发明的一个方面，提供了一种方法，包括以下步骤：a）产生带电业务应用消息; b）生成会话连接请求消息，基于会话连接请求消息的附录基于数字签名方案进行签名并发送到前端; c）生成基于对称的会话密钥，在密钥上签署数字签名，基于订户的公开密钥加密，向用户发送会话密钥; 解密会话密钥消息，验证数字签名，从会话密钥消息中提取会话密钥并存储在条件访问模块; 以及d）在所收取的服务请求消息上签署数字签名，使用所提取的会话密钥进行加密并发送到头端。

公开(公告)号：US08401040B2

公开(公告)日：2013-03-19

申请号：US11299214

申请日：2005-12-08

申请人： Woong-Shik You ,  Joon-Young Jung ,  Yong-Seong Cho ,  Han-Seung Koo ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Woong-Shik You ,  Joon-Young Jung ,  Yong-Seong Cho ,  Han-Seung Koo ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04H20/28

CPC分类号： H04L12/2801 ,  H04L12/2854

摘要： Provided is apparatus and method for transforming cable channel. The apparatus includes a data mixing unit for receiving and mixing a band data and a first broadband data, to thereby generate a second broadband data of a broadband cable channel, and a channel adapting unit for dividing a band data from the second broadband data received through the broadband cable channel, bypassing the second broadband data to a first subscriber apparatus and transmitting the band data to a second subscriber apparatus.

摘要翻译： 提供了用于转换有线电视频道的装置和方法。 该装置包括：数据混合单元，用于接收和混合频带数据和第一宽带数据，从而产生宽带有线频道的第二宽带数据;以及信道适配单元，用于将频带数据与从第 宽带电缆信道，绕过第二宽带数据到第一用户设备，并将频带数据发送到第二用户设备。

公开(公告)号：US07739518B2

公开(公告)日：2010-06-15

申请号：US11483999

申请日：2006-07-10

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

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

IPC分类号： G06F11/30 ,  G06F12/14

CPC分类号： G06F21/575 ,  H04L63/1441

摘要： Provided is a method for securing cable modem (CM) following a Data Over Cable Service Interface Specification (DOCSIS) against physical security attacks. The method includes the steps of: a) classifying information to be stored in the DOCSIS CM based on a requirement degree of confidentiality and anti-alteration; b) storing the information in a non-volatile memory of the DOCSIS CM when the information is absolute confidential information, but processing a mechanism for deleting the information stored in the non-volatile memory in case that attacks by a hacker is sensed; c) storing the information in the non-volatile memory of the DOCSIS CM when the information is middle-level security information; and d) storing the information in a write-once (WO) memory of the DOCSIS CM when the information is absolute anti-alteration information.

摘要翻译： 提供了一种用于保护电缆调制解调器（CM）的方法，该电缆调制解调器（CM）遵循电缆数据服务接口规范（DOCSIS），防止物理安全攻击。 该方法包括以下步骤：a）根据需要的机密性和抗变形度对DOCSIS CM中存储的信息进行分类; b）当信息是绝对机密信息时，将信息存储在DOCSIS CM的非易失性存储器中，但是在感测到黑客的攻击的情况下处理用于删除存储在非易失性存储器中的信息的机制; c）当信息是中级安全信息时，将信息存储在DOCSIS CM的非易失性存储器中; 以及d）当所述信息是绝对抗变换信息时，将信息存储在DOCSIS CM的一次写入（WO）存储器中。

公开(公告)号：US07738478B2

公开(公告)日：2010-06-15

申请号：US11644211

申请日：2006-12-22

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

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

IPC分类号： H04L12/28 ,  G01R31/08

CPC分类号： H04L12/2801 ,  H04L41/12

摘要： An apparatus for determining a downstream topology in a hybrid-fiber-coaxial network includes: a signal branching unit for branching a signal received from a cable modem termination system into a plurality of branched signals; a plurality of signal selecting units for selectively receiving a frequency band signal corresponding to a specific downstream channel among the plurality of branched signals; a downstream topology determining unit for analyzing a downstream ambiguity resolution frequency list contained in a channel information message of a downstream primary channel received from the cable modem termination system, collecting in parallel channel information messages with respect to a plurality of downstream channels, and determining a downstream topology at a high speed using the collected channel information messages; and a plurality of packet generating units for setting downstream channel frequency bands of the signal selecting units under control of the downstream topology determining unit, and sending the channel information messages of the collected downstream channels to the downstream topology determining unit.

摘要翻译： 一种用于确定混合光纤同轴网络中的下游拓扑的装置包括：信号分支单元，用于将从电缆调制解调器终端系统接收的信号分支为多个分支信号; 多个信号选择单元，用于选择性地接收与所述多个分支信号中的特定下游信道相对应的频带信号; 用于分析包含在从所述电缆调制解调器终端系统接收的下游主信道的信道信息消息中的下游模糊度分辨率频率列表的下游拓扑确定单元，针对多个下行信道并行收集信道信息消息，并且确定 使用收集的信道信息消息高速下行拓扑; 以及多个分组产生单元，用于在所述下游拓扑确定单元的控制下设置所述信号选择单元的下行信道频带，并将所收集的下行信道的信道信息消息发送到所述下游拓扑确定单元。

公开(公告)号：US07504884B2

公开(公告)日：2009-03-17

申请号：US11506910

申请日：2006-08-21

申请人： Sang-Jung Ra ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Sang-Jung Ra ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H03G3/30

CPC分类号： H03G3/3089

摘要： Provided is an automatic gain control (AGC) apparatus of a cable modem. The apparatus includes: a gain controller for measuring a power level of digital input signals transmitted from outside, accumulating the measured values of the digital input signals for a predetermined period, acquiring an average size of the signals, and calculating an error value between the average signal size and a predetermined signal size; an amplitude control unit for receiving error values adjusted by the gain controller and controlling an amplitude of the signal; a low pass filter for receiving the signal outputted from the amplitude control unit and performing low pass filtering on the signal; and a signal size control unit for receiving the signal obtained from filtering of the low pass filter and controlling the signal size.

摘要翻译： 提供了一种电缆调制解调器的自动增益控制（AGC）装置。 该装置包括：增益控制器，用于测量从外部发送的数字输入信号的功率电平，在预定时段内积累数字输入信号的测量值，获取信号的平均大小，以及计算平均值之间的误差值 信号尺寸和预定信号尺寸; 振幅控制单元，用于接收由所述增益控制器调整的误差值并控制所述信号的幅度; 低通滤波器，用于接收从幅度控制单元输出的信号，并对信号执行低通滤波; 以及信号尺寸控制单元，用于接收从低通滤波器的滤波获得的信号并控制信号大小。

公开(公告)号：US07478310B2

公开(公告)日：2009-01-13

申请号：US11318627

申请日：2005-12-28

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

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

IPC分类号： H03M13/00

CPC分类号： H03M13/1515 ,  H03M13/155 ,  H03M13/353 ,  H03M13/6516

摘要： A programmable error correcting device is disclosed. The programmable error correcting device includes a controller for receiving information about a length of a codeword, an error correcting capacity, whether of not a shortened codeword mode is supported and a total byte number of burst data and outputting a control signal; a preprocessor for dividing input information data by a length of information byte in a codeword and outputting the divided input information data with a valid data indicating signal in response to the control signal input from the controller for an error correcting coding; and a coder for deciding a structure for an error correcting encoding according to the control signal inputted from the controller and performing an error correcting encoding on information data inputted from the preprocessor according to the decided structure.

摘要翻译： 公开了一种可编程误差校正装置。 可编程错误校正装置包括：控制器，用于接收关于码字的长度的信息，纠错能力，是否支持缩短的码字模式，以及总字节数的突发数据并输出控制信号; 用于将输入信息数据除以码字中的信息字节的长度并且响应于从控制器输入的用于纠错编码的控制信号，输出具有有效数据指示信号的分割输入信息数据的预处理器; 以及编码器，用于根据从控制器输入的控制信号来确定用于纠错编码的结构，并根据所确定的结构对从预处理器输入的信息数据执行纠错编码。