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    • 3. 发明授权
    • Ethernet passive optical network for integrating broadcast and communication based on time division multiplexing scheme
    • 以太网无源光网络,用于基于时分复用方案整合广播和通信
    • US07382982B2
    • 2008-06-03
    • US10811600
    • 2004-03-29
    • Ki-Cheol LeeYun-Je OhKee-Sung NamTae-Sung Park
    • Ki-Cheol LeeYun-Je OhKee-Sung NamTae-Sung Park
    • H04J14/08
    • H04J14/0226H04J14/0232H04J14/0247H04J14/0252H04J14/0282H04Q11/0066H04Q11/0067H04Q11/0071
    • An Ethernet-PON integrates broadcast/communication through time division multiplexing, which provides users with high-speed, high-volume communication data and high-quality, real-time digital broadcast/image data. An OLT performs a switching operation on a plurality of digital broadcast/image data received from an external broadcaster according to respective broadcast/image selection information from users, time-division-multiplexes the data into a broadcast/image signal, multiplexes the signal and communication data from an IP network into a frame, and electro-optically converts the frame and transmits to the frame to ONTs through an optical splitter. Each ONT receives and photoelectrically converts the signal from the OLT, and performs frame & time-slot demultiplexing to output the entire received communication signals and broadcast/image information contained in a time-slot assigned to the ONT to a corresponding user. The ONT receives a communication signal and broadcast/image selection information from the user, and outputs them to the OLT through the splitter.
    • 以太网PON通过时分复用整合广播/通信,为用户提供高速,高容量的通信数据和高质量的实时数字广播/图像数据。 OLT根据来自用户的各广播/图像选择信息对从外部广播者接收的多个数字广播/图像数据进行切换操作,将数据时分复用为广播/图像信号,复用信号和通信 从IP网络到帧的数据,并且电光转换帧并通过分光器向帧发送到ONT。 每个ONT接收和光电转换来自OLT的信号,并执行帧和时隙解复用以将包含在分配给ONT的时隙中的整个接收的通信信号和广播/图像信息输出给对应的用户。 ONT从用户接收通信信号和广播/图像选择信息,并通过分路器将其输出到OLT。
    • 6. 发明授权
    • Ethernet passive optical network for convergence of broadcasting and communication
    • 以太网无源光网络用于广播和通信的融合
    • US07450581B2
    • 2008-11-11
    • US10771943
    • 2004-02-04
    • Ki-Cheol LeeYun-Je OhTae-Sung ParkJun-Ho Koh
    • Ki-Cheol LeeYun-Je OhTae-Sung ParkJun-Ho Koh
    • H04L12/56
    • H04Q11/0067H04J14/0226H04J14/0232H04J14/0247H04J14/0252H04J14/0282H04J14/0298H04Q11/0066
    • An EPON for providing a subscriber with a high speed/high capacity data service and a real time digital broadcasting/image service includes an OLT for switching digital broadcasting/image data according to broadcasting/image selection information from each ONT, modulating the switched data into frequencies assigned to each ONT, coupling a broadcasting/image signal with a communication signal, and transmitting the coupled signal. The digital broadcasting/image data is transmitted from an outside broadcaster, the broadcasting/image signal is a combination of the modulated signals, and the communication signal is obtained by optically modulating communication data from an IP network. Further included in the EPON are multiple ONTs, and a divider for dividing the signal from the OLT for routing to each of the multiple ONTs, combining signals from the multiple ONTs, and transmitting the combined signal to the OLT.
    • 用于为用户提供高速/高容量数据服务和实时数字广播/图像服务的EPON包括:根据来自每个ONT的广播/图像选择信息切换数字广播/图像数据的OLT,将切换的数据调制成 分配给每个ONT的频率,将广播/图像信号与通信信号耦合,并发送耦合信号。 数字广播/图像数据从外部广播者发送,广播/图像信号是调制信号的组合,并且通过光学地调制来自IP网络的通信数据获得通信信号。 EPON中还包括多个ONT,以及用于分离来自OLT的信号以用于路由到多个ONT中的每一个的分频器,组合来自多个ONT的信号,并将组合信号发送到OLT。
    • 7. 发明授权
    • Passive optical network employing code division multiple access
    • 无源光网络采用码分多址
    • US07330656B2
    • 2008-02-12
    • US10651746
    • 2003-08-29
    • Ki-Cheol LeeYun-Je OhTae-Sung ParkJong-Kwon Kim
    • Ki-Cheol LeeYun-Je OhTae-Sung ParkJong-Kwon Kim
    • H04J13/00
    • H04J14/0282H04J14/0226H04J14/0227H04J14/0238H04J14/0247H04J14/0252H04Q11/0067H04Q11/0071H04Q2011/0064
    • A PON and a method of transmitting data employing different upstream and downstream transmission protocols are disclosed. The PON includes: a plurality of ONTs; WDM filters; an OLT receiving and transmitting optical signals to and from the ONTs and a higher network; and an optical coupler. The ONT includes a first switching unit, a level transformer converting two level Ethernet signals into a three level data signals, a first code generator generating a specific CDMA codes that distinguish the ONT from another ONT, and a first multiplier performing a spread spectrum function with the CDMA codes. The OLT includes an optical receiver, a branching filter branching the upstream CDMA signals, a plurality of second code generators generating codes for despread, a plurality of second multipliers multiplying the received signals by the despread codes, and a plurality of data decider extracting data through correlation calculation.
    • 公开了PON和使用不同的上行和下行传输协议传输数据的方法。 PON包括:多个ONT; WDM滤波器 OLT接收和发送来自ONT和更高网络的光信号; 和光耦合器。 ONT包括第一开关单元,将两级以太网信号转换成三电平数据信号的电平变换器,产生区分ONT与另一ONT的特定CDMA码的第一码发生器,以及执行扩频功能的第一乘法器, CDMA码。 OLT包括光接收器,分支上行CDMA信号的分支滤波器,多个第二代码生成器产生解扩的代码,多个第二乘法器将接收信号乘以解扩码,以及多个数据判别器提取数据通过 相关计算。
    • 8. 发明授权
    • Large-capacity optical router using electric buffer
    • 大容量光路由器采用电动缓冲器
    • US07409158B2
    • 2008-08-05
    • US10638983
    • 2003-08-12
    • Ki-Cheol LeeYun-Je OhSang-Hyun DohJong-Kwon Kim
    • Ki-Cheol LeeYun-Je OhSang-Hyun DohJong-Kwon Kim
    • H04J14/00
    • H04J14/0212H04J14/0209H04J14/0227H04Q11/0005H04Q11/0066H04Q2011/0015H04Q2011/0016H04Q2011/002H04Q2011/0024H04Q2011/0039
    • A large-capacity optical router is disclosed that exchanges data traffic such as IP packets, Ethernet frames, etc., at high speed in units of optical frames. The large-capacity optical router uses an electric buffer including input ports, output ports, an add port for inputting data received from a lower IP router, a drop port for outputting data to the lower IP router, a wavelength division demultiplexing section for wavelength-division-demultiplexing wavelength signals input through the input ports and the add port, an input interface section for converting optical frames from the wavelength division demultiplexing section into electric signals, and an optical switch for performing a high-speed switching of the optical frames from the input interface section. The large-capacity optical router also includes an output interface section for processing the optical frames output from the optical switch, a wavelength division multiplexing section for wavelength-division-multiplexing outputs of the output interface section and transmitting the multiplexed outputs to another large-capacity optical router, a drop interface section for processing the optical frames from the wavelength division multiplexer to the lower IP router, a header processing section for recognizing header information, an optical switch control section for controlling a connection state of the optical switch, a header reinserting section for reinserting headers into outputs of the optical router, and an edge traffic aggregator including of an ingress part for converting IP packets input from the lower IP router into optical frames and an egress part for converting the optical frames into IP packets and transmitting the converted packets to the IP router.
    • 公开了以光学单元为单位高速交换诸如IP分组,以太网帧等的数据业务的大容量光路由器。 大容量光路由器使用电气缓冲器,包括输入端口,输出端口,用于输入从较低IP路由器接收的数据的添加端口,用于向较低IP路由器输出数据的丢弃端口,用于波分复用的波分复用部分, 通过输入端口和加法端口输入的除法分离波长信号,用于将来自波分解复用部分的光学帧转换为电信号的输入接口部分,以及用于执行光学帧的高速切换的光开关 输入接口部分。 大容量光路由器还包括用于处理从光开关输出的光帧的输出接口部分,用于对输出接口部分的输出进行波分复用的波分复用部分,并将多路复用输出发送到另一大容量 光路由器,用于处理从波分多路复用器到下IP路由器的光帧的分接口部分,用于识别头信息的报头处理部分,用于控制光开关的连接状态的光开关控制部分, 用于将标题重新插入到光路由器的输出中的边缘业务聚合器,以及包括用于将从下行IP路由器输入的IP分组转换为光帧的入口部分的边缘业务聚合器和用于将光帧转换成IP分组的出口部分, 数据包到IP路由器。
    • 9. 发明授权
    • Optical ring network for burst data communication
    • 用于突发数据通信的光环网络
    • US07272311B2
    • 2007-09-18
    • US10456166
    • 2003-06-06
    • Sang-Hyun DohKi-Cheol LeeSe-Kang ParkYun-Je Oh
    • Sang-Hyun DohKi-Cheol LeeSe-Kang ParkYun-Je Oh
    • H04J14/02
    • H04Q11/0066H04Q2011/0092
    • Disclosed is an optical ring network for burst data communication having a plurality of core nodes connected with each other through fiber links. Each core node comprises a demultiplexer for demultiplexing a received optical signal into a plurality of channels by wavelength, an add/drop section for dropping channels selected from the plurality of channels based on a control signal, a multiplexer for multiplexing and outputting the plurality of channels inputted through the add/drop section, a branching section arranged between the demultiplexer and the add/drop section for branching off channel portions from each channel, and a controller for recognizing destinations for frames with each channel modulated and outputting the control signal for dropping the selected channels to the add/drop section.
    • 公开了一种用于突发数据通信的光环网络,其具有通过光纤链路彼此连接的多个核心节点。 每个核心节点包括用于通过波长将接收的光信号解复用为多个信道的解复用器,用于基于控制信号丢弃从多个信道中选择的信道的加/减部分,用于复用和输出多个信道的多路复用器 通过加法/放置部分输入的分支部分,布置在解复用器和加法/分支部分之间用于从每个信道分支信道部分的分支部分,以及用于识别每个信道被调制的帧的目的地的控制器,并且输出用于丢弃的信道的控制信号 选择的频道到添加/删除部分。
    • 10. 发明申请
    • Communication/broadcast multiplexer and demultiplexer used in communication/broadcast-integrated system
    • 在通信/广播集成系统中使用的通信/广播多路复用器和解复用器
    • US20060018334A1
    • 2006-01-26
    • US11005590
    • 2004-12-06
    • Jae-Hun ChoYun-Je OhJun-Ho KohKi-Cheol Lee
    • Jae-Hun ChoYun-Je OhJun-Ho KohKi-Cheol Lee
    • H04J3/26
    • H04J14/0226H04H20/69H04J14/0232H04J14/0247H04J14/0252H04J14/0282H04L12/2801H04N21/43632H04Q11/0067H04Q2011/0016
    • A communication/broadcast multiplexer and demultiplexer for multiplexing and demultiplexing communication and broadcast signals using a specific transmission standard in an optical network system that integrates broadcast and communication services using a channel selection technique. The multiplexer comprises a broadcast data input unit, a communication data input unit, and a synchronous Ethernet framer. The broadcast data input unit receives broadcast data switched on a subscriber basis through a broadcast switch in an optical line terminal (OLT) in the system, and transfers it as a synchronous data frame to the synchronous Ethernet framer. The communication data input unit receives communication data on a subscriber basis through an Ethernet switch in the OLT and transfers it as an asynchronous data frame to the synchronous Ethernet framer. The synchronous Ethernet framer converts both the received synchronous and asynchronous data frames into a TDM synchronous Ethernet frame, and outputs the TDM synchronous Ethernet frame.
    • 一种通信/广播多路复用器和解复用器,用于在使用信道选择技术集成广播和通信服务的光网络系统中使用特定传输标准来复用和解复用通信和广播信号。 多路复用器包括广播数据输入单元,通信数据输入单元和同步以太网成帧器。 广播数据输入单元通过系统中的光线路终端(OLT)中的广播交换机接收基于用户切换的广播数据,并将其作为同步数据帧传送到同步以太网成帧器。 通信数据输入单元通过OLT中的以太网交换机在用户基础上接收通信数据,并将其作为异步数据帧传送到同步以太网成帧器。 同步以太网成帧器将接收到的同步和异步数据帧转换为TDM同步以太网帧,并输出TDM同步以太网帧。