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    • 62. 发明申请
    • Bi-directional add/drop node
    • 双向添加/删除节点
    • US20050141894A1
    • 2005-06-30
    • US10860717
    • 2004-06-03
    • Sung-Kee KimYun-Je OhSeong-Taek HwangSung-Bum Park
    • Sung-Kee KimYun-Je OhSeong-Taek HwangSung-Bum Park
    • H04B10/03H04B10/00H04B10/038H04B10/07H04B10/079H04B10/2507H04B10/275H04B10/29H04J14/02
    • H04J14/0227H04J14/0208H04J14/0216H04J14/0241H04J14/0283
    • A bi-directional add/drop node employed in a bi-directional path-switching network linked by an optical fiber in a loop form is disclosed. The bi-directional add/drop node has a first terminal point and a second terminal point for receiving channels over the optical fiber such that odd channels are inputted through the first terminal point are outputted through the second terminal point and even channels are inputted through the second terminal point are outputted through the first terminal point. The bi-directional add/drop node comprises, a circulation section for circulating the even and odd channels in a predetermined direction, a first input-output section located between the circulation section and the first terminal point wherein the first input-output section outputs the odd channels inputted from the first terminal point to the circulation section through a first input line and outputs the even channels inputted from the circulation section to the first terminal point through a first output line, and a second input-output section positioned between the circulation section and the second terminal point, wherein the second input-output section outputs the even channels inputted from the second terminal point to the circulation section through a second input line and outputs the odd channels inputted from the circulation section to the second terminal point through a second output line.
    • 公开了一种在由光纤以环形形式链接的双向路径交换网络中采用的双向加/减节点。 双向分插节点具有用于在光纤上接收信道的第一终端点和第二终端点,使得通过第一终端点输入奇数信道,并通过第二终端点输入偶数信道 第二终点通过第一终点输出。 双向分插节点包括:循环部分,用于沿预定方向循环偶数和奇数通道;第一输入 - 输出部分,位于循环部分和第一终点之间,其中第一输入 - 输出部分输出 通过第一输入线从第一终端点输入到循环部的奇数通道,并且通过第一输出线将从循环部输入的偶数通道输出到第一终点;以及位于循环部之间的第二输入输出部 和第二终点,其中第二输入 - 输出部分通过第二输入线将从第二终端点输入的偶数通道输出到循环部分,并且通过第二输出部分将从循环部分输入的奇数通道输出到第二终点 输出线。
    • 63. 发明申请
    • Transport stream transmission apparatus
    • 传输流传输装置
    • US20050141623A1
    • 2005-06-30
    • US10862610
    • 2004-06-07
    • Jae-Hun ChoSang-Ho KimChan-Yul KimJun-Ho KohYun-Je Oh
    • Jae-Hun ChoSang-Ho KimChan-Yul KimJun-Ho KohYun-Je Oh
    • H04L29/10H04N7/12H04N7/24
    • H04L12/413H04L65/607H04N21/23608H04N21/4344H04N21/43632
    • Disclosed is a transport stream transmission apparatus, for example an MPEG Motion Picture Experts Group)—transport stream transmission apparatus. The transmission apparatus comprising a transmitter including a first media independent interface to generate a data stream, the data stream having a preamble and at least one transport stream, and a first physical layer device to receive a data frame from the first media independent interface, a back plane board to receive the data frame from the transmitter, and enable distribution of the received data frame to individual subscribers, and a second media independent interface to receive at least one transport stream from the second physical layer device, and enable individual subscribers to received transport stream, wherein the second media independent interface includes a second physical layer device to identify a preamble of the data frame received from the back plane board, perform a clock recovery operation, and generate at least one transport stream of the data frame.
    • 公开了传输流传输装置,例如MPEG运动图像专家组) - 传输流传输装置。 传输设备包括发射机,其包括用于生成数据流的第一媒体独立接口,所述数据流具有前导码和至少一个传输流,以及第一物理层设备,用于从所述第一媒体独立接口接收数据帧; 背板接收来自发射机的数据帧,并且使接收到的数据帧能够分配给各个用户;以及第二媒体独立接口,用于从第二物理层设备接收至少一个传输流,并使各个用户能够接收 传输流,其中所述第二媒体独立接口包括第二物理层设备,以识别从所述背板接收的数据帧的前同步码,执行时钟恢复操作,并且生成所述数据帧的至少一个传输流。
    • 64. 发明授权
    • Bi-directional optical-amplifier module
    • 双向光放大器模块
    • US06894830B2
    • 2005-05-17
    • US10054322
    • 2002-01-22
    • Chang-Hee LeeYun-Je OhSeong-Taek HwangHyun Deok KimJeong-Hun ShinYunhee Cho
    • Chang-Hee LeeYun-Je OhSeong-Taek HwangHyun Deok KimJeong-Hun ShinYunhee Cho
    • H01S3/10G02B6/42H01S3/30H01S5/50H04B10/00H04B10/2525H04B10/29H04B10/294H04B10/297H04J14/00H04J14/02G02F1/35H04B10/16
    • H04B10/297
    • Disclosed is a bi-directional optical-amplifier module including first through fourth optical amplifiers, a mid-stage device for performing a desired signal processing for an upward or downward optical signal passing therethrough, a first optical-signal-path-setting device for supplying an optical signal inputted to a first input/output terminal of the bi-directional optical-amplifier module while outputting an optical signal outputted from the fourth optical amplifier to the first input/output terminal, a second optical-signal-path-setting device for supplying an optical signal inputted to a second input/output terminal of the bi-directional optical-amplifier module while outputting an optical signal outputted from the third optical amplifier to the second input/output terminal, a third optical-signal-path-setting device for outputting an optical signal outputted from the first optical amplifier to a first input/output terminal of the mid-stage device while supplying an optical signal outputted from the first input/output terminal of the mid-stage device to the fourth optical amplifier, and a fourth optical-signal-path-setting device for outputting an optical signal outputted from the second optical amplifier to a second input/output terminal of the mid-stage device while supplying an optical signal outputted from the second input/output terminal of the mid-stage device to the third optical amplifier.
    • 公开了一种双向光放大器模块,包括第一到第四光放大器,用于对通过其的向上或向下的光信号执行期望的信号处理的中级装置,用于供应的第一光信号路径设置装置 输出到所述双向光放大器模块的第一输入/输出端的光信号,同时将从所述第四光放大器输出的光信号输出到所述第一输入/输出端;第二光信号路径设置装置, 提供输入到双向光放大器模块的第二输入/输出端的光信号,同时将从第三光放大器输出的光信号输出到第二输入/输出端;第三光信号路径设定装置 用于在提供光信号的同时将从第一光放大器输出的光信号输出到中级装置的第一输入/输出端 从中段装置的第一输入/输出端子输出到第四光放大器;以及第四光信号路径设置装置,用于将从第二光放大器输出的光信号输出到第二输入/输出端 中间级装置,同时将从中级装置的第二输入/输出端子输出的光信号提供给第三光放大器。
    • 66. 发明申请
    • Wavelength-division-multiplexed passive optical network system using wavelength-seeded light source
    • 使用波长种子光源的波分复用无源光网络系统
    • US20050074240A1
    • 2005-04-07
    • US10778426
    • 2004-02-13
    • Dae-Kwang JungYun-Je OhSeong-Taek Hwang
    • Dae-Kwang JungYun-Je OhSeong-Taek Hwang
    • H04B10/24H04B10/207H04J14/02H04J14/00
    • H04J14/0226H04J14/02H04J14/0246H04J14/025H04J14/0282
    • An economical wavelength-division-multiplexed passive optical network (WDM-PON) system is realized by directly modulating a wavelength-seeded light source to transmit upstream or downstream data, without using an expensive external modulator. A multiplexed signal having the same wavelength as the waveguide grating is generated and used to control the temperature of the waveguide grating and adjust the wavelength of a wavelength-division-multiplexed signal routed to a transfer link. The wavelength selectivity and stabilization of each light source are not required. Since upstream and downstream signals can be multiplexed and demultiplexed concurrently by each waveguide grating located in the central office and the remote node, it is possible to reduce the number of waveguide gratings used in a WDM optical network. In addition, upstream and downstream signals can be transmitted concurrently using a single-strand transfer optical fiber, thereby realizing an economical and efficient WDM-PON.
    • 通过直接调制波长种子光源来传输上游或下游数据,实现了经济的波分复用无源光网络(WDM-PON)系统,而不需要昂贵的外部调制器。 产生具有与波导光栅相同波长的多路复用信号,并用于控制波导光栅的温度并调节路由到传输链路的波分复用信号的波长。 不需要每个光源的波长选择性和稳定性。 由于可以通过位于中心局和远程节点中的每个波导光栅同时复用和解复用上游和下行信号,所以可以减少在WDM光网络中使用的波导光栅的数量。 此外,可以使用单股传输光纤同时传输上行和下行信号,从而实现经济高效的WDM-PON。