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    • 41. 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。
    • 42. 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。
    • 43. 发明授权
    • Wavelength division multiplexing-passive optical network capable of integrating broadcast and communication services
    • 波分复用 - 能够集成广播和通信业务的无源光网络
    • US07366415B2
    • 2008-04-29
    • US10694456
    • 2003-10-27
    • Ki-Cheol LeeJun-Ho KohYun-Je Oh
    • Ki-Cheol LeeJun-Ho KohYun-Je Oh
    • H04J14/00
    • H04J14/0282H04H20/42H04H20/80H04J14/0226H04J14/0232H04J14/0246H04J14/025H04J14/0298
    • Disclosed is a wavelength division multiplexing-passive optical network (WDM-PON) that integrates broadcast and communication data, and transmit using WDM. An optical line terminal (OLT), connected to a broadcasting network and an Internet protocol (IP)-network, receives a digital broadcast signal from the broadcasting network and a first communication signal from the IP network, and transmits them as a single (broadcast/communication) integrated optical signal after photoelectric conversion, and further transfers a second communication signal from a service user to the IP network. An OLT/ONU on the user side transfers integrated optical signal from OLT to the user, and transfers channel-information data of a digital broadcast desired by the user and user data including the second communication signal from the user to the OLT. A first WDM demultiplexer WDM-demultiplexes the single signal and transfers it to the OLT/ONU. A first WDM multiplexer WDM-multiplexes the user data and transfers it to the OLT.
    • 公开了将广播和通信数据进行集成并使用WDM进行发送的波分复用无源光网络(WDM-PON)。 连接到广播网络和因特网协议(IP)网络的光线路终端(OLT)从广播网络接收数字广播信号和来自IP网络的第一通信信号,并将其作为单个(广播) /通信)光电转换后的集成光信号,并且还将第二通信信号从服务用户传送到IP网络。 用户侧的OLT / ONU将来自OLT的集成光信号传输给用户,并且将用户所期望的数字广播的信道信息数据和包括来自用户的第二通信信号的用户数据传送到OLT。 第一WDM解复用器WDM解复用单个信号并将其传送到OLT / ONU。 第一个WDM复用器WDM复用用户数据并将其传输到OLT。
    • 44. 发明授权
    • Clock and data recovery device coping with variable data rates
    • 时钟和数据恢复设备应对可变数据速率
    • US07366271B2
    • 2008-04-29
    • US10789217
    • 2004-02-27
    • Chan-Yul KimJun-Ho KohYun-Je Oh
    • Chan-Yul KimJun-Ho KohYun-Je Oh
    • H03D3/24
    • H03L7/23H03L7/087H03L7/14H04L7/0087H04L7/033
    • A clock and data recovery (CDR) device is disclosed that is capable of recovering a clock signal from a data signal that has a variable data rate. The CDR device includes a reference clock generating section for dividing a basic clock by a first predetermined value P, synchronizing the clock and multiplying the clock by a second predetermined value Q to generate a reference clock corresponding to the variable data rate; a clock and data recovery section for receiving the transmitted data, recovering a clock and data from the received data and outputting the recovered clock and data; and a control section for generating a control signal according to the variable data rate and sending the signal to the reference clock generating section and the clock and data recovery section.
    • 公开了一种能够从具有可变数据速率的数据信号中恢复时钟信号的时钟和数据恢复(CDR)设备。 CDR设备包括:参考时钟产生部分,用于将基本时钟除以第一预定值P,使时钟同步并将时钟乘以第二预定值Q,以产生对应于可变数据速率的参考时钟; 时钟和数据恢复部分,用于接收所发送的数据,从所接收的数据中恢复时钟和数据并输出恢复的时钟和数据; 以及控制部分,用于根据可变数据速率产生控制信号,并将信号发送到参考时钟产生部分和时钟和数据恢复部分。
    • 46. 发明申请
    • Residential ethernet switching device for sub frame-based switching
    • 用于子帧交换的住宅以太网交换设备
    • US20070014279A1
    • 2007-01-18
    • US11481588
    • 2006-07-06
    • Si WangKwan-Soo LeeYun-Je OhJun-Ho KohSang-Ho KimJae-Hun Cho
    • Si WangKwan-Soo LeeYun-Je OhJun-Ho KohSang-Ho KimJae-Hun Cho
    • H04L12/28H04L12/56
    • H04L49/351H04L12/52H04L49/206
    • A residential Ethernet switching device for sub frame-based switching in a residential Ethernet system is provided. The device includes a plurality of reception data path processors for parsing a residential Ethernet frame inputted to the residential Ethernet switching device, as respective residential Ethernet sub frames, and outputting the parsed residential Ethernet sub frames, a switch fabric for switching the residential Ethernet sub frames inputted through the plurality of reception data path processors, a plurality of transmission data path processors for providing an output path for multiplexing and outputting the residential Ethernet sub frames switched through the switch fabric, and a local cycle counter connected to the plurality of reception data path processors, the switch fabric, and the plurality of transmission data path processors, and providing cycle counter information on the respective residential Ethernet sub-frames.
    • 提供住宅以太网系统中用于子帧交换的住宅以太网交换设备。 该设备包括多个接收数据路径处理器,用于解析输入到住宅以太网交换设备的住宅以太网帧作为相应的住宅以太网子帧,并输出解析的住宅以太网子帧,用于切换住宅以太网子帧 通过多个接收数据路径处理器输入的多个传输数据路径处理器,用于提供用于复用和输出通过交换结构切换的住宅以太网子帧的输出路径的多个传输数据路径处理器,以及连接到多个接收数据路径的本地周期计数器 处理器,交换结构和多个传输数据路径处理器,并且在各个住宅以太网子帧上提供周期计数器信息。
    • 47. 发明申请
    • Asynchronous frame transmission method for strictly ensuring beginning of super frame in residential ethernet
    • 用于严格确保住宅以太网超帧启动的异步帧传输方法
    • US20060230147A1
    • 2006-10-12
    • US11399867
    • 2006-04-07
    • Jae-Hun ChoJong-Ho YoonSang-Ho KimYun-Je OhJun-Ho KohHee-Kyung Choi
    • Jae-Hun ChoJong-Ho YoonSang-Ho KimYun-Je OhJun-Ho KohHee-Kyung Choi
    • G06F15/173
    • H04L12/66
    • A method for transmitting asynchronous data includes including: comparing a size of asynchronous data with that of an empty transmission area; inserting the asynchronous data into the empty transmission area when the asynchronous data has a size smaller than or equal to that of the empty transmission area; determining if the empty transmission area has a size larger than a predetermined threshold value when the asynchronous data has a size larger than that of the empty transmission area; transmitting the asynchronous data with the empty transmission area left when the empty transmission area has a size smaller than the predetermined threshold value; and segmenting the asynchronous data according to the size of the empty transmission area when the empty transmission area has a size larger than the predetermined threshold value, inserting the segmented asynchronous data into the empty transmission area, and transmitting remaining segmented asynchronous data in a subsequent transmission cycle.
    • 用于发送异步数据的方法包括:将异步数据的大小与空的传输区域的大小进行比较; 当异步数据的大小小于或等于空传输区域的大小时,将异步数据插入空传输区域; 当所述异步数据的尺寸大于所述空的传输区域的大小时,确定所述空的传输区域是否具有大于预定阈值的大小; 当所述空传输区域具有小于所述预定阈值的大小时,向所述空传输区域发送所述异步数据; 并且当所述空传输区域具有大于所述预定阈值的大小时,根据所述空传输区域的大小来分割所述异步数据,将所述分段的异步数据插入所述空传输区域,以及在随后的传输中发送剩余的分段异步数据 周期。
    • 49. 发明申请
    • MPEG2 SPTS-splitting type subscriber distribution system and distribution method thereof
    • MPEG2 SPTS分割式用户分配系统及其分发方法
    • US20050101246A1
    • 2005-05-12
    • US10706494
    • 2003-11-12
    • Do-In ChoiYun-Je OhJun-Ho Koh
    • Do-In ChoiYun-Je OhJun-Ho Koh
    • H04N7/10H04H20/00H04J3/00H04J3/04H04L12/28H04N7/16H04N21/61H04H1/00
    • H04N21/6587H04N7/17318H04N21/23608H04N21/2362H04N21/472H04N21/64322
    • A subscriber distribution system for distributing broadcasting data to subscribers through a subscriber network. The subscriber distribution system has a PID filter section for checking contents of an inputted MPEG2 MPTS frame and splitting the MPEG2 MPTS frame into SPTS, a table regenerator for regenerating a PAT and a PMT that correspond with the SPTS by changing contents in the PAT and the PMT. An SPTS splitting and storing section stores the SPTS at high speed in a memory area of a buffer, which is assigned to subscribers according to PIDS. A subscriber distribution section selecting the SPTS requested by subscribers and storing the SPTS in the memory area of the buffer assigned to subscribers. A control section receives MPTS information from a higher network to provide MPTS information to the PID filter section and the table regenerator, and receives a request for a program from subscribers, and transfers the request to the subscriber distribution section.
    • 一种用户分配系统,用于通过用户网络向用户分发广播数据。 用户分配系统具有用于检查输入的MPEG2 MPTS帧的内容并将MPEG2 MPTS帧分割成SPTS的PID滤波器部分,用于通过改变PAT中的内容来再现与PTS对应的PAT和PMT的表再生器, PMT。 SPTS分割存储部分将SPTS高速存储在根据PIDS分配给用户的缓冲器的存储区域中。 用户分配部分,选择由用户请求的SPTS,并将SPTS存储在分配给用户的缓冲器的存储器区域中。 控制部分从较高的网络接收MPTS信息以向PID过滤部分和表再生器提供MPTS信息,并且从订户接收节目的请求,并将该请求传送到用户分发部分。
    • 50. 发明申请
    • Device for filtering out null packet for MPEG-2 transmission
    • 用于过滤出用于MPEG-2传输的空分组的装置
    • US20050047341A1
    • 2005-03-03
    • US10771942
    • 2004-02-04
    • Yong-Deok KimJun-Ho KohChan-Yul KimYun-Je Oh
    • Yong-Deok KimJun-Ho KohChan-Yul KimYun-Je Oh
    • H04N7/12H04L12/28
    • H04N21/23611
    • Disclosed is a device for filtering out a null packet in a data stream for example an MPEG-2 TS (Transport Stream) to avoid bandwidth waste when it is transmitted to a backbone network. The device includes a plurality of receiving interfaces, a filter unit, and a controller. The receiving interfaces receive parallel data, such as DVB-ASI (Digital Video Broadcasting-Asynchronous Serial Interface) inputs as channel-by-channel MPEG-2 data. The filter unit counts the respective numbers of data packets and non-data packets of the data input from the receiving interfaces and filters a null packet in the data. A network transmission unit transmits the filtered data to a backbone network. The controller calculates a bit rate based on both of the count numbers received from the filter unit.
    • 公开了一种用于过滤出例如MPEG-2TS(传输流)的数据流中的零分组的装置,以避免在传输到骨干网络时的带宽浪费。 该装置包括多个接收接口,滤波器单元和控制器。 接收接口接收并行数据,例如作为逐个通道MPEG-2数据的DVB-ASI(数字视频广播 - 异步串行接口)输入。 滤波器单元对从接收接口输入的数据的数据分组和非数据分组的数量进行计数,并对数据中的零分组进行过滤。 网络传输单元将过滤的数据发送到骨干网络。 控制器基于从滤波器单元接收的两个计数值计算比特率。