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    • 3. 发明申请
    • Home network service platform apparatus employing IEEE 1394
    • 采用IEEE 1394的家庭网络服务平台装置
    • US20050114572A1
    • 2005-05-26
    • US10862252
    • 2004-06-07
    • Hee-Won CheungDo-In ChoiYun-Je OhLae-Kyoung Kim
    • Hee-Won CheungDo-In ChoiYun-Je OhLae-Kyoung Kim
    • H04L12/28G06F13/38H04L29/06
    • H04L69/08G06F2213/0012
    • A network service platform apparatus employing an IEEE 1394 protocol is disclosed. The network service platform apparatus includes a first optical transceiver connected to an external service gateway to receive downstream data from the external service gateway and transfer upstream data to the external service gateway, a first IEEE 1394 physical unit connected to the first optical transceiver to perform a physical layer operation of an IEEE 1394 protocol with respect to the downstream data, and to transfer the upstream data to the first optical transceiver, and an IEEE 1394 link unit connected to the first IEEE 1394 physical unit to deliver isochronous data of the downstream data by performing a link layer operation of the IEEE 1394 protocol, and to send asynchronous data to be delivered to the service gate to the first IEEE 1394 physical unit as upstream data by performing the link layer operation of the IEEE 1394 protocol with respect to the asynchronous data. In addition, the home network service platform apparatus includes an Application Protocol Interface connected to the IEEE 1394 link unit to output IEEE 1394 isochronous data, an IEEE 1394 bridge unit having a first bus connected to the first IEEE 1394 physical unit and a second bus connected to the first IEEE 1394 physical unit in order to transmit/receive data between the first bus and the second bus, and a second IEEE 1394 physical unit which is connected to the IEEE 1394 bridge unit through the second bus and connected to an IEEE 1394 unit using a bus independent of the IEEE 1394 apparatus.
    • 公开了一种采用IEEE 1394协议的网络服务平台装置。 网络服务平台装置包括连接到外部服务网关以从外部服务网关接收下游数据并将上行数据传送到外部服务网关的第一光收发器,连接到第一光收发器的第一IEEE 1394物理单元,以执行 IEEE 1394协议相对于下游数据的物理层操作,以及将上行数据传送到第一光收发器,以及连接到第一IEEE 1394物理单元的IEEE 1394链路单元,以通过以下方式传送下行数据的等时数据: 执行IEEE 1394协议的链路层操作,并且通过相对于异步数据执行IEEE 1394协议的链路层操作,发送要传送到作为上行数据的第一IEEE 1394物理单元的服务门的异步数据 。 此外,家庭网络服务平台装置包括连接到IEEE 1394链路单元以输出IEEE 1394同步数据的应用协议接口,具有连接到第一IEEE 1394物理单元的第一总线的IEEE 1394桥接单元和连接到第一总线的第二总线 到第一IEEE 1394物理单元以在第一总线和第二总线之间发送/接收数据,以及第二IEEE 1394物理单元,其通过第二总线连接到IEEE 1394桥接器单元并连接到IEEE 1394单元 使用独立于IEEE 1394设备的总线。
    • 7. 发明授权
    • Duobinary optical transmitter
    • 双色光发射机
    • US07215892B2
    • 2007-05-08
    • US10638814
    • 2003-08-11
    • Han-Lim LeeSeong-Taek HwangHee-Won CheungYun-Je OhJi-Chai JeongByung-Chang Kang
    • Han-Lim LeeSeong-Taek HwangHee-Won CheungYun-Je OhJi-Chai JeongByung-Chang Kang
    • H04B10/04
    • H04B10/505H04B10/5055H04B10/5167
    • Disclosed is a duobinary optical transmitter, which includes a laser source for outputting light with a predetermined wavelength; a Mach-Zehnder interferometer-type optical intensity modulator for modulating the intensity of the light according to a three-level data signal inputted through a modulation terminal; a low-pass filter for converting an inputted two-level binary data signal into a three-level data signal through an interference among codes; and, a modulator driver/amplifier for amplifying the three-level data signal and then outputting it to the modulation terminal, wherein the overall bandwidth of the low-pass filter, the modulator driver/amplifier, and the optical intensity modulator corresponds to approximately ¼ of the clock frequency of the two-level binary data signal.
    • 公开了一种双向光学发射机,其包括用于输出具有预定波长的光的激光源; 用于根据通过调制端子输入的三电平数据信号来调制光强度的马赫 - 曾德干涉仪型光强度调制器; 低通滤波器,用于通过码之间的干扰将输入的二电平二进制数据信号转换为三电平数据信号; 以及用于放大三电平数据信号然后将其输出到调制终端的调制器驱动器/放大器,其中低通滤波器,调制器驱动器/放大器和光强度调制器的总带宽对应于大约1/4 的二级二进制数据信号的时钟频率。