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    • 41. 发明申请
    • OPTICAL LINE TERMINAL AND OPTICAL LINE TRANSMISSION AND RECEPTION SYSTEM
    • 光线终端和光线传输和接收系统
    • US20100129072A1
    • 2010-05-27
    • US12620876
    • 2009-11-18
    • Hideya YOSHIUCHIHiroki IkedaYing Shi
    • Hideya YOSHIUCHIHiroki IkedaYing Shi
    • H04B10/08
    • H04J3/1694H04B10/6911
    • An optical line terminal includes an optical network interface having an optical receiver unit to convert an optical signal received from an optical network unit into an electrical signal and output a direct current bias monitoring signal and an error code detector to detect an error code in the electrical signal to output an error code indication signal, a storage to store therein a direct current bias table indicating a direct current bias corresponding to a direct current bias control parameter of the optical network units and a dynamic band allocation information table indicating communication time slot information allotted to each optical network unit and a control unit to receive the direct current bias monitoring signal and the error code indication signal and supply the direct current bias control signal to the optical receiver unit to thereby form one feedback circuit together with the optical network interface.
    • 光线路终端包括光网络接口,其具有光接收单元,用于将从光网络单元接收的光信号转换为电信号并输出​​直流偏置监视信号,并且错误代码检测器检测电气中的错误代码 信号以输出错误代码指示信号,存储器存储指示对应于光网络单元的直流偏置控制参数的直流偏置的直流偏置表和指示分配的通信时隙信息的动态频带分配信息表 到每个光网络单元和控制单元,以接收直流偏置监视信号和错误代码指示信号,并将直流偏置控制信号提供给光接收器单元,从而与光网络接口一起形成一个反馈电路。
    • 44. 发明授权
    • Storage function method and apparatus in a passive optical network
    • 无源光网络中的存储功能方法和装置
    • US07660309B2
    • 2010-02-09
    • US11650428
    • 2007-01-08
    • Hiroki IkedaNa Zhang
    • Hiroki IkedaNa Zhang
    • H04L12/56
    • H04L29/08729H04L65/4084H04N5/765H04N21/2541H04N21/2747H04N21/6405H04N21/64322
    • A method and an apparatus for implementing a storage function in a passive optical network (PON) system. On the basis of a LINK ID held by the data, data requiring storage, e.g. data making exclusive use of a wide bandwidth such as audiovisual data and large-volume data packages, are determined among all the data sent to an optical network unit. These data requiring storage are stored in a storage device installed in the optical network unit. In case the user requests data stored in the storage device, the stored data are transferred directly to the user, without any need to request and send these data for the second time via an IPTV server and the core network. It is possible to avoid duplicate transfers of data, and in particular to avoid duplicate transfers of data making exclusive use of a comparatively wide bandwidth such as audiovisual data and large-volume data packages, to improve the utilization factor of the downlink bandwidth, and to reduce flow congestion and data delays.
    • 一种在无源光网络(PON)系统中实现存储功能的方法和装置。 基于由数据保存的LINK ID,需要存储的数据,例如, 在发送到光网络单元的所有数据中确定专门使用诸如视听数据和大容量数据包之类的宽带宽的数据。 这些需要存储的数据被存储在安装在光网络单元中的存储设备中。 在用户请求存储在存储设备中的数据的情况下,将所存储的数据直接传送给用户,而无需通过IPTV服务器和核心网络第二次请求和发送这些数据。 可以避免数据的重复传输,特别是为了避免重复传输专门使用诸如视听数据和大容量数据包之类的较宽带宽的数据,以提高下行链路带宽的利用率,并且 减少流量拥塞和数据延迟。
    • 45. 发明授权
    • Channel switching system and method of IPTV service in passive optical network
    • 无源光网络中IPTV业务的信道交换系统及方法
    • US07639905B2
    • 2009-12-29
    • US11727511
    • 2007-03-27
    • Hiroki IkedaNie Yaling
    • Hiroki IkedaNie Yaling
    • G02B6/26
    • H04J3/1694H04N7/22
    • Channel switching system and method of an IPTV service in a passive optical network (PON) are disclosed. To reduce a channel switching time of an IPTV system in the passive optical network, the system and the method use a channel switching control module and a channel list module in the passive optical network. In a case where a passive optical network system receives an IPTV channel switching request transmitted from a terminal user, the channel switching control module checks a recording of a channel list module and a recording of an authentication list module, and then updates a filter recording of an optical network unit to thereby directly transmit an image flow of a new channel in the passive optical network. When such system and method are applied to the passive optical network, high-speed switching of the IPTV service channel by the terminal user can be realized.
    • 公开了无源光网络(PON)中的IPTV业务的信道切换系统和方法。 为了减少无源光网络中IPTV系统的信道切换时间,系统和方法使用无源光网络中的信道切换控制模块和信道列表模块。 在无源光网络系统接收到从终端用户发送的IPTV信道切换请求的情况下,信道切换控制模块检查信道列表模块的记录和认证列表模块的记录,然后更新过滤器记录 光网络单元,从而在无源光网络中直接发送新信道的图像流。 当将这种系统和方法应用于无源光网络时,可以实现终端用户对IPTV业务信道的高速交换。
    • 47. 发明申请
    • NETWORK SYSTEM, OPTICAL NETWORK UNIT AND OPTICAL LINE TERMINAL
    • 网络系统,光网络单元和光线终端
    • US20090162063A1
    • 2009-06-25
    • US12337790
    • 2008-12-18
    • Masahiko MizutaniToshiki SugawaraHiroki Ikeda
    • Masahiko MizutaniToshiki SugawaraHiroki Ikeda
    • H04B10/20
    • H04J3/0682H04J3/1694
    • It is necessary to completely remove overlapping of signals between plural PONs in order to make the PONs coexist. Accordingly, it is required to share or intensively manage bandwidth use conditions over an optical fiber that serves as a common band between plural systems. Therefore, transmission clocks should be synchronized with high accuracy between plural systems. A reference clock is provided from an external device or a representative OLT to the entire systems to perform clock synchronization between plural systems, so that the overall systems are synchronized by synchronizing each OLT with the reference clock. A hierarchical management method is selected that manages ONUs under the control of each OLT by managing band use information arranged for each OLT with respect to an external device or a representative OLT for sharing of bandwidth use conditions between plural systems.
    • 为了使PON共存,必须完全消除多个PON之间的信号重叠。 因此,需要在用作多个系统之间的公共频带的光纤上共享或集中管理带宽使用条件。 因此,传输时钟应该在多个系统之间以高精度同步。 从外部设备或代表性OLT向整个系统提供参考时钟以在多个系统之间执行时钟同步,使得通过使每个OLT与参考时钟同步来使整个系统同步。 选择分级管理方法,通过管理针对每个OLT针对外部设备或代表性的OLT布置的用于共享多个系统之间的带宽使用条件的代表性OLT来管理在每个OLT的控制下的ONU。