公开(公告)号：US07457542B2

公开(公告)日：2008-11-25

申请号：US11335525

申请日：2006-01-20

申请人： Kenro Sekine ,  Nobuaki Tajimi

发明人： Kenro Sekine ,  Nobuaki Tajimi

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04B10/2507 ,  H04B10/272 ,  H04L12/66 ,  H04L25/03038 ,  H04L2025/03356 ,  H04L2025/03477 ,  H04L2025/03668

摘要： An optical access network system having a function of correcting upstream signal waveform distortions occurring in the PON section, wherein a central office side apparatus comprises a main controller to notify each subscriber connection apparatus of a transmission grant period, an equalizer of a tap gain adaptive control type to correct waveform distortions of signals received from the subscriber connection apparatuses, an equalizer controller, and a parameter table for storing, for each subscriber connection apparatus, the initial values of tap gains to be set for the equalizer. The main controller issues a switchover request for switching the equalization characteristic to the equalizer controller each time notifying a subscriber connection apparatus of a transmission grant period, and the equalizer controller retrieves the initial values of the tap gains for the subscriber connection apparatus from the parameter table in response to the switchover request, and sets these values to the equalizer.

摘要翻译： 具有校正PON部分中出现的上行信号波形失真的功能的光接入网络系统，其中，中心局侧设备包括：主控制器，用于向每个用户连接设备通知传输授权周期;抽头增益自适应控制的均衡器 类型以校正从用户连接装置接收的信号的波形失真，均衡器控制器和参数表，用于为每个用户连接装置存储要为均衡器设置的抽头增益的初始值。 主控制器每当向用户连接装置通知发送授权周期时发出将均衡特性切换到均衡器的切换请求，并且均衡器控制器从参数表中检索用户连接装置的抽头增益的初始值 响应切换请求，并将这些值设置为均衡器。

公开(公告)号：US20070172239A1

公开(公告)日：2007-07-26

申请号：US11526604

申请日：2006-09-26

申请人： Tomotaka Yamazaki ,  Ryuji Ishii ,  Shinji Sakano ,  Nobuaki Tajimi

发明人： Tomotaka Yamazaki ,  Ryuji Ishii ,  Shinji Sakano ,  Nobuaki Tajimi

IPC分类号： H04J14/00

CPC分类号： H04J14/0226 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282

摘要： It is configured to have a first optical line terminal for transmitting a video signal of a first wavelength; a second optical line terminal for transmitting a downstream data signal of a second wavelength and receiving an upstream data signal of a third wavelength; and a wavelength division multiplexer for wavelength division multiplexing the video signal and the upstream data signal and the descend data signal, where an attenuator is provided between the second optical line terminal and the wavelength division multiplexer, the attenuator having a characteristic that an attenuation amount given to the second wavelength is larger than an attenuation amount given to the third wavelength.

摘要翻译： 它被配置为具有用于发送第一波长的视频信号的第一光线路终端; 第二光线路终端，用于发送第二波长的下行数据信号并接收第三波长的上行数据信号; 以及波分多路复用器，用于对视频信号和上行数据信号以及下降数据信号进行波分复用，其中衰减器设置在第二光线路终端与波分复用器之间，衰减器具有给定的衰减量的特性 到第二波长大于给予第三波长的衰减量。

公开(公告)号：US20060280502A1

公开(公告)日：2006-12-14

申请号：US11335525

申请日：2006-01-20

申请人： Kenro Sekine ,  Nobuaki Tajimi

发明人： Kenro Sekine ,  Nobuaki Tajimi

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04B10/2507 ,  H04B10/272 ,  H04L12/66 ,  H04L25/03038 ,  H04L2025/03356 ,  H04L2025/03477 ,  H04L2025/03668

摘要： An optical access network system having a function of correcting upstream signal waveform distortions occurring in the PON section, wherein a central office side apparatus comprises a main controller to notify each subscriber connection apparatus of a transmission grant period, an equalizer of a tap gain adaptive control type to correct waveform distortions of signals received from the subscriber connection apparatuses, an equalizer controller, and a parameter table for storing, for each subscriber connection apparatus, the initial values of tap gains to be set for the equalizer. The main controller issues a switchover request for switching the equalization characteristic to the equalizer controller each time notifying a subscriber connection apparatus of a transmission grant period, and the equalizer controller retrieves the initial values of the tap gains for the subscriber connection apparatus from the parameter table in response to the switchover request, and sets these values to the equalizer.

摘要翻译： 具有校正PON部分中出现的上行信号波形失真的功能的光接入网络系统，其中，中心局侧设备包括：主控制器，用于向每个用户连接设备通知传输许可周期;抽头增益自适应控制的均衡器 类型以校正从用户连接装置接收的信号的波形失真，均衡器控制器和参数表，用于为每个用户连接装置存储要为均衡器设置的抽头增益的初始值。 主控制器每当向用户连接装置通知发送授权周期时发出将均衡特性切换到均衡器的切换请求，并且均衡器控制器从参数表中检索用户连接装置的抽头增益的初始值 响应切换请求，并将这些值设置为均衡器。