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：US07570763B2

公开(公告)日：2009-08-04

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

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：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：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：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。