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    • 62. 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。
    • 63. 发明授权
    • Bit-rate-independent optical receiver
    • 比特率独立光接收机
    • US06931210B2
    • 2005-08-16
    • US09946211
    • 2001-09-05
    • Sang-Ho KimSeong-Taek HwangJun-Ho KohYun-Je Oh
    • Sang-Ho KimSeong-Taek HwangJun-Ho KohYun-Je Oh
    • H04B10/40H04B10/07H04B10/50H04B10/60H04B10/66H04L7/02H04B10/00H04B10/08H04B10/12H04B10/16H04B10/20
    • H04B10/6932
    • Disclosed is a bit-rate-independent optical receiver including: a bit rate sensing unit for optoelectrically converting an input optical signal, while outputting a bit rate sensing signal; a variation sensing unit for outputting a bit rate variation sensing signal; a temperature sensing unit for sensing an internal temperature and outputting a temperature sensing signal; a signal reproducing unit for reproducing data and clocks, and in response to a clock correction signal, reproducing the data and clocks based on the clock correction signal; and, a control unit for calculating the bit rate based on the voltage level of the bit rate sensing signal in response to receiving the variation sensing signal, and compensating the calculated bit rate for errors resulting from a variation in temperature, and outputting a clock correction signal indicative of the temperature-compensated bit rate to the signal reproducing unit.
    • 公开了一种比特率独立的光接收机,包括:比特率感测单元,用于在输出比特率感测信号的同时对输入的光信号进行光电转换; 用于输出比特率变化感测信号的变化感测单元; 温度感测单元,用于感测内部温度并输出温度感测信号; 信号再现单元,用于再现数据和时钟,并响应于时钟校正信号,基于时钟校正信号再现数据和时钟; 以及控制单元,用于响应于接收到变化感测信号而基于比特率感测信号的电压电平计算比特率,并且补偿由于温度变化导致的错误的计算比特率,并输出时钟校正 指示信号再现单元的温度补偿比特率的信号。
    • 65. 发明申请
    • Time division multiplexing frame for multiplexing different synchronous signals and method for transmitting and receiving the same
    • 用于复用不同同步信号的时分多路复用帧及其发送和接收方法
    • US20050169316A1
    • 2005-08-04
    • US10941711
    • 2004-09-15
    • Seung-Jin LeeYun-Je OhJun-Ho KohJae-Hun Cho
    • Seung-Jin LeeYun-Je OhJun-Ho KohJae-Hun Cho
    • H04J3/00H04J3/07H04J3/16H04L25/02H04N7/173H04N21/647
    • H04N21/2365H04J3/07H04J3/1694H04N21/235H04N21/23614H04N21/4347H04N21/4348
    • A TDM (Time Division Multiplexing) frame applicable to digital broadcast data transmission in an FTTH (Fiber To The Home) system and a method for transmitting and receiving the TDM frame is disclosed. The TDM frame and methods are applicable to transmit a plurality of digital broadcast data units having different synchronous clocks using a simple format. The TDM frame for multiplexing digital broadcast and communication signals having different synchronous signals in a broadcast/communication convergence system using an FTTH system comprises a framing bit field for identifying a start and end of the TDM frame seamlessly provided; two MPTS (Multiple-Program Transport Stream) fields respectively having at least one bit assigned for digital broadcast data transmission wherein an amount of input digital broadcast data is adjusted according to a difference between a multiplexing rate and an input rate associated with the digital broadcast data in the digital broadcast data transmission; and a fast Ethernet field having at least one bit assigned for communication data transmission.
    • 公开了适用于FTTH(Fiber To Home)系统中的数字广播数据传输的TDM(时分复用)帧以及TDM帧的发送和接收方法。 TDM帧和方法适用于使用简单格式发送具有不同同步时钟的多个数字广播数据单元。 用于在使用FTTH系统的广播/通信收敛系统中复用具有不同同步信号的数字广播和通信信号的TDM帧包括用于识别无缝提供的TDM帧的开始和结束的成帧位域; 分别具有分配给数字广播数据传输的至少一个比特的两个MPTS(多节目传输流)字段,其中根据复用率和与数字广播数据相关联的输入速率之间的差异来调整输入数字广播数据的量 在数字广播数据传输中; 以及具有至少一个分配给通信数据传输的位的快速以太网字段。
    • 66. 发明申请
    • Optical subscriber network system
    • 光用户网络系统
    • US20050047790A1
    • 2005-03-03
    • US10783804
    • 2004-02-20
    • Young-Hun JooChan-Yul KimJun-Ho KohKyu-Hyung Cho
    • Young-Hun JooChan-Yul KimJun-Ho KohKyu-Hyung Cho
    • H04J3/00H04B10/00H04B10/27H04J14/02H04J14/08H04L12/18H04L12/44H04Q11/00
    • H04J14/0226H04J14/0232H04J14/0247H04J14/0252H04J14/0282
    • An optical subscriber network system is disclosed, which comprises: a server bi-directional optical transmitter including a multiplexer to multiplexes communication data and broadcast data, a server laser diode to converts the multiplexed data into an optical signal, and a server photo diode receive communication data from a subscriber, wherein the server bi-directional optical transmitter transmits the upstream communication data; and a subscriber bi-directional optical receiver including a subscriber laser diode to transmit upstream communication data, a subscriber photo diode to receive the optical signal transmitted from the server bi-directional optical transmitter, and a demultiplexer to demultiplex and divide the multiplexed signal into communication data and broadcast data. In the optical subscriber network system, the optical transmitter and the optical receiver can transceive image signals and Ethernet communication signals in a two-way direction by means of a single laser diode and photo diode.
    • 公开了一种光用户网络系统,其包括:服务器双向光发射机,包括多路复用器,用于复用通信数据和广播数据;服务器激光二极管,用于将多路复用数据转换为光信号;以及服务器光电二极管接收通信 来自用户的数据,其中服务器双向光发射机发送上行通信数据; 以及包括用户激光二极管以发送上行通信数据的订户双向光接收机,用于接收从服务器双向光发射机发送的光信号的用户光二极管,以及解复用器,以将多路复用信号解复用并分成通信 数据和广播数据。 在光用户网络系统中,光发射机和光接收机可以通过单个激光二极管和光电二极管双向传输图像信号和以太网通信信号。
    • 68. 发明授权
    • Optical network for bi-directional wireless communication
    • 用于双向无线通信的光网络
    • US08046815B2
    • 2011-10-25
    • US11192599
    • 2005-07-29
    • Yong-Deok KimChang-Sup ShimJun-Ho Koh
    • Yong-Deok KimChang-Sup ShimJun-Ho Koh
    • H04N7/173
    • H04N21/2402H04L1/0014H04N7/22H04N21/23418H04N21/234309H04N21/23439H04N21/25833H04N21/2662H04N21/64769
    • A method for transmitting video data to the users via a network in a transcoder of an image processing system including a storage media having a predetermined amount of storage area is disclosed. The method includes the steps of storing in the storage media, the video data provided based on the corresponding services, monitoring a traffic condition of the network to determine if transcoding is necessary; transmitting the stored video data to the corresponding users, respectively, via the network, when the transcoding is not necessary; and transcoding the stored video data to transmit the video data to the corresponding users, respectively, when the transcoding is necessary. The video data provided is based on the corresponding services includes image information having the highest quality of service from a content provider.
    • 公开了一种通过包括具有预定量的存储区域的存储介质的图像处理系统的代码转换器中的网络经由网络向用户发送视频数据的方法。 该方法包括以下步骤:在存储介质中存储基于相应服务提供的视频数据,监视网络的业务状况以确定是否需要转码; 当不需要转码时,通过网络分别将存储的视频数据发送给对应的用户; 并且当需要转码时,分别对存储的视频数据进行代码转换以将视频数据发送给相应的用户。 提供的视频数据基于相应的服务,包括具有来自内容提供商的最高服务质量的图像信息。
    • 69. 发明授权
    • Optical communication system capable of providing analog telephone service
    • 能够提供模拟电话业务的光通信系统
    • US07706416B2
    • 2010-04-27
    • US11190416
    • 2005-07-27
    • Han-Sang KimChan-Yul KimJun-Ho KohYun-Je Oh
    • Han-Sang KimChan-Yul KimJun-Ho KohYun-Je Oh
    • H04J3/04H04J3/00
    • H04J14/0226H04J14/0232H04J14/0247H04J14/0252H04J14/0282
    • An optical communication system for transmitting telephone voice data to a subscriber terminal using an optical line is disclosed. The system includes an OLT (Optical Line Terminal) multiplexing the telephone voice data together with the broadcasting data and communication data, converting the optical signals transferred upward into electric signals, demultiplexing and converting the uplink telephone voice data into analog telephone voice signals to transfer the converted analog telephone voice signals to a PSTN; a plurality of ONTs (Optical Network Terminals) for converting the optical signals transferred from the OLT into electric signals, demultiplexing and converting the demultiplexed downlink telephone voice data into analog signals to transfer the converted analog signals to subscribers' telephones; and an optical branching filter for branching the signals from the OLT to the plurality of ONTs, combining, and transferring the signals from the plurality of ONTs to the OLT.
    • 公开了一种用于使用光线路将电话语音数据发送到用户终端的光通信系统。 该系统包括将电话语音数据与广播数据和通信数据一起复用的OLT(光线路终端),将向上传送的光信号转换为电信号,解复用并将上行电话语音数据转换为模拟电话语音信号,以将 将模拟电话语音信号转换成PSTN; 用于将从OLT传送的光信号转换为电信号的多个ONT(光网络终端),解复用和将解复用的下行电话语音数据转换为模拟信号,以将转换的模拟信号传送到订户的电话; 以及用于将来自OLT的信号分支到多个ONT的光分路滤波器,组合并将来自多个ONT的信号传送到OLT。