公开(公告)号：US20060221435A1

公开(公告)日：2006-10-05

申请号：US11155537

申请日：2005-06-20

申请人： Taizo Maeda ,  Satoru Okano ,  Takehiro Fujita

发明人： Taizo Maeda ,  Satoru Okano ,  Takehiro Fujita

IPC分类号： H01S3/00

CPC分类号： H04J14/0212 ,  H04B10/296 ,  H04B2210/258 ,  H04J14/0221

摘要： A wavelength division multiplexing (WDM) device, an optical leakage prevention method, and a WDM communication system are disclosed. The WDM device includes a level adjusting unit for receiving an optical signal, for adjusting the optical power level of the received optical signal, and for outputting the level-adjusted optical signal; and a controlling unit for analyzing the optical power level of the optical signal output from the level adjusting unit, for controlling the level adjusting unit so that the optical power level of the output optical signal stays at a constant level, and for transitioning to an “off-state” when the optical power level of the output optical signal becomes less than a predetermined disconnection-detection threshold so that the level adjusting unit gives a predetermined attenuation to the input optical signal. The controlling unit transitions from the “off-state” when the optical power level of the output optical signal is greater than a predetermined recovery threshold and an upstream WDM device is not in the “off-state”.

公开(公告)号：US07619813B2

公开(公告)日：2009-11-17

申请号：US11155537

申请日：2005-06-20

申请人： Taizo Maeda ,  Satoru Okano ,  Takehiro Fujita

发明人： Taizo Maeda ,  Satoru Okano ,  Takehiro Fujita

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04J14/0212 ,  H04B10/296 ,  H04B2210/258 ,  H04J14/0221

摘要： A wavelength division multiplexing (WDM) device, an optical leakage prevention method, and a WDM communication system are disclosed. The WDM device includes a level adjusting unit for receiving an optical signal, for adjusting the optical power level of the received optical signal, and for outputting the level-adjusted optical signal; and a controlling unit for analyzing the optical power level of the optical signal output from the level adjusting unit, for controlling the level adjusting unit so that the optical power level of the output optical signal stays at a constant level, and for transitioning to an “off-state” when the optical power level of the output optical signal becomes less than a predetermined disconnection-detection threshold so that the level adjusting unit gives a predetermined attenuation to the input optical signal. The controlling unit transitions from the “off-state” when the optical power level of the output optical signal is greater than a predetermined recovery threshold and an upstream WDM device is not in the “off-state”.

摘要翻译： 公开了一种波分复用（WDM）设备，防漏漏方法和WDM通信系统。 WDM装置包括：电平调整单元，用于接收光信号，用于调整接收到的光信号的光功率电平，并输出电平调整的光信号; 以及控制单元，用于分析从电平调整单元输出的光信号的光功率电平，用于控制电平调整单元，使得输出光信号的光功率电平保持在恒定电平，并转换到“ 当输出光信号的光功率电平变得小于预定的断开检测阈值时，电平调节单元给输入光信号预定的衰减。 当输出光信号的光功率电平大于预定恢复阈值并且上游WDM设备不处于“关闭状态”时，控制单元从“截止状态”转变。

公开(公告)号：US07248804B2

公开(公告)日：2007-07-24

申请号：US10892241

申请日：2004-07-16

申请人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

发明人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

IPC分类号： H04B10/16

CPC分类号： H04B10/2931

摘要： Conventionally, an adjustment of an optical power level of an input Pin of an optical amplifier module is made with an optical variable attenuator. An optical coupler for measuring the optical power level of Pin and an optical variable attenuator are replaced by a variable optical coupler. The branch ratio of the variable optical coupler is varied, whereby the input optical power level Pin to an optical amplifier module is adjusted. As a result, an optical loss is reduced by an amount corresponding to the elimination of the optical attenuator, and also the OSNR of the optical amplifier module is improved.

摘要翻译： 通常，利用光可变衰减器对光放大器模块的输入Pin的光功率电平进行调整。 用于测量Pin和光可变衰减器的光功率电平的光耦合器由可变光耦合器代替。 改变可变光耦合器的分支比例，从而调整到光放大器模块的输入光功率电平Pin。 结果，光损耗减少了对应于光衰减器的消除量，并且光放大器模块的OSNR也得到改善。

公开(公告)号：US07650072B2

公开(公告)日：2010-01-19

申请号：US12399275

申请日：2009-03-06

申请人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

发明人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

IPC分类号： H04B10/00 ,  H04B10/08 ,  H04B10/12 ,  H04J14/02

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0219

摘要： An optical node apparatus according to the present invention amplifies a WDM signal light input to an input port, and thereafter, branches the amplified WDM signal light by an optical branching coupler to send the branched lights to first and second optical paths, and selects the light propagated through the first optical path by an optical switch to amplify the selected light by a post-amplifier, thereby outputting the amplified light from an output port, when the optical node apparatus is operated as an optical amplification repeating node. When the operational state is upgraded to an optical add/drop multiplexing node, an OADM section is connected between a set of connecting ports on the second optical path, and the adjustment of the OADM section is performed utilizing the WDM signal light branched by the optical branching coupler, and thereafter, the switching of the optical switch is performed to select the light on the second optical path side. As a result, since the switching the operational state from the optical amplification repeating node to the OADM node can be performed in a short time, it becomes possible to provide the continued communication service at the low initial installation cost.

摘要翻译： 根据本发明的光节点装置放大输入到输入端口的WDM信号光，然后通过光分路耦合器对放大的WDM信号光进行分支，以将分支光发送到第一和第二光路，并选择光 通过光开关通过第一光路传播，以通过后置放大器放大所选择的光，从而当光节点装置作为光放大重复节点工作时，从输出端口输出放大的光。 当操作状态升级为光分插复用节点时，OADM部分连接在第二光路上的一组连接端口之间，并且利用由光学分支的WDM信号光进行OADM部分的调整 分支耦合器，然后进行光开关的切换以选择第二光路侧的光。 结果，由于可以在短时间内将操作状态从光放大重复节点切换到OADM节点，所以可以以低的初始安装成本提供持续的通信服务。

公开(公告)号：US20060127101A1

公开(公告)日：2006-06-15

申请号：US10892241

申请日：2004-07-16

申请人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

发明人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

IPC分类号： H04B10/00

CPC分类号： H04B10/2931

摘要： Conventionally, an adjustment of an optical power level of an input Pin of an optical amplifier module is made with an optical variable attenuator. An optical coupler for measuring the optical power level of Pin and an optical variable attenuator are replaced by a variable optical coupler. The branch ratio of the variable optical coupler is varied, whereby the input optical power level Pin to an optical amplifier module is adjusted. As a result, an optical loss is reduced by an amount corresponding to the elimination of the optical attenuator, and also the OSNR of the optical amplifier module is improved.

摘要翻译： 通常，利用光可变衰减器对光放大器模块的输入引脚的光功率电平进行调整。 用于测量Pin和光可变衰减器的光功率电平的光耦合器由可变光耦合器代替。 改变可变光耦合器的分支比例，从而调整到光放大器模块的输入光功率电平Pin。 结果，光损耗减少了对应于光衰减器的消除量，并且光放大器模块的OSNR也得到改善。

公开(公告)号：US07522839B2

公开(公告)日：2009-04-21

申请号：US11319376

申请日：2005-12-29

申请人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

发明人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

IPC分类号： H04B10/08 ,  H04J14/02

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0219

摘要： An optical node apparatus according to the present invention amplifies a WDM signal light input to an input port, and thereafter, branches the amplified WDM signal light by an optical branching coupler to send the branched lights to first and second optical paths, and selects the light propagated through the first optical path by an optical switch to amplify the selected light by a post-amplifier, thereby outputting the amplified light from an output port, when the optical node apparatus is operated as an optical amplification repeating node. When the operational state is upgraded to an optical add/drop multiplexing node, an OADM section is connected between a set of connecting ports on the second optical path, and the adjustment of the OADM section is performed utilizing the WDM signal light branched by the optical branching coupler, and thereafter, the switching of the optical switch is performed to select the light on the second optical path side. As a result, since the switching the operational state from the optical amplification repeating node to the OADM node can be performed in a short time, it becomes possible to provide the continued communication service at the low initial installation cost.

摘要翻译： 根据本发明的光节点装置放大输入到输入端口的WDM信号光，然后通过光分路耦合器对放大的WDM信号光进行分支，以将分支光发送到第一和第二光路，并选择光 通过光开关通过第一光路传播，以通过后置放大器放大所选择的光，从而当光节点装置作为光放大重复节点工作时，从输出端口输出放大的光。 当操作状态升级为光分插复用节点时，OADM部分连接在第二光路上的一组连接端口之间，并且利用由光学分支的WDM信号光进行OADM部分的调整 分支耦合器，然后进行光开关的切换以选择第二光路侧的光。 结果，由于可以在短时间内将操作状态从光放大重复节点切换到OADM节点，所以可以以低的初始安装成本提供持续的通信服务。

公开(公告)号：US08615167B2

公开(公告)日：2013-12-24

申请号：US13230048

申请日：2011-09-12

申请人： Yasushi Sugaya ,  Takehiro Fujita ,  Satoru Okano

发明人： Yasushi Sugaya ,  Takehiro Fujita ,  Satoru Okano

IPC分类号： H04B10/08 ,  H04J14/02

CPC分类号： H04B10/2935 ,  H04B10/294 ,  H04J14/0221

摘要： A WDM optical transmission system includes a plurality of optical nodes optically coupled by a transmission line, a processor that is operative to calculate an amount of adjustment of a reception level capable of increasing an optical signal-to-noise ratio for each channel of the WDM light reaching the optical node positioned at a receiving end of the unit section based on information on amplification operation of the WDM light in at least one optical-amplification repeating node disposed on the optical transmission line in the unit section, and to adjust a power level corresponding to each channel of the WDM light transmitted on the transmission line from the optical node positioned at a transmission end of the unit section in accordance with a calculation result of the calculation.

摘要翻译： WDM光传输系统包括通过传输线光耦合的多个光学节点，处理器，其可操作以计算能够增加WDM的每个信道的光信噪比的接收电平的调整量 基于设置在单元部分中的光传输线路上的至少一个光放大重复节点中的WDM光的放大操作的信息的信息，到位于单元部分的接收端的光节点的光，并且调整功率电平 对应于根据计算的计算结果，从位于单元部分的发送端的光节点在传输线上传输的WDM光的每个信道。

公开(公告)号：US20090226167A1

公开(公告)日：2009-09-10

申请号：US12399275

申请日：2009-03-06

申请人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

发明人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

IPC分类号： H04J14/00

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0219

摘要： An optical node apparatus according to the present invention amplifies a WDM signal light input to an input port, and thereafter, branches the amplified WDM signal light by an optical branching coupler to send the branched lights to first and second optical paths, and selects the light propagated through the first optical path by an optical switch to amplify the selected light by a post-amplifier, thereby outputting the amplified light from an output port, when the optical node apparatus is operated as an optical amplification repeating node. When the operational state is upgraded to an optical add/drop multiplexing node, an OADM section is connected between a set of connecting ports on the second optical path, and the adjustment of the OADM section is performed utilizing the WDM signal light branched by the optical branching coupler, and thereafter, the switching of the optical switch is performed to select the light on the second optical path side. As a result, since the switching the operational state from the optical amplification repeating node to the OADM node can be performed in a short time, it becomes possible to provide the continued communication service at the low initial installation cost.

摘要翻译： 根据本发明的光节点装置放大输入到输入端口的WDM信号光，然后通过光分路耦合器对放大的WDM信号光进行分支，以将分支光发送到第一和第二光路，并选择光 通过光开关通过第一光路传播，以通过后置放大器放大所选择的光，从而当光节点装置作为光放大重复节点工作时，从输出端口输出放大的光。 当操作状态升级为光分插复用节点时，OADM部分连接在第二光路上的一组连接端口之间，并且利用由光学分支的WDM信号光进行OADM部分的调整 分支耦合器，然后进行光开关的切换以选择第二光路侧的光。 结果，由于可以在短时间内将操作状态从光放大重复节点切换到OADM节点，所以可以以低的初始安装成本提供持续的通信服务。

公开(公告)号：US20080002978A1

公开(公告)日：2008-01-03

申请号：US11319376

申请日：2005-12-29

申请人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

发明人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

IPC分类号： H04B10/16

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0219

摘要： An optical node apparatus according to the present invention amplifies a WDM signal light input to an input port, and thereafter, branches the amplified WDM signal light by an optical branching coupler to send the branched lights to first and second optical paths, and selects the light propagated through the first optical path by an optical switch to amplify the selected light by a post-amplifier, thereby outputting the amplified light from an output port, when the optical node apparatus is operated as an optical amplification repeating node. When the operational state is upgraded to an optical add/drop multiplexing node, an OADM section is connected between a set of connecting ports on the second optical path, and the adjustment of the OADM section is performed utilizing the WDM signal light branched by the optical branching coupler, and thereafter, the switching of the optical switch is performed to select the light on the second optical path side. As a result, since the switching the operational state from the optical amplification repeating node to the OADM node can be performed in a short time, it becomes possible to provide the continued communication service at the low initial installation cost.

摘要翻译： 根据本发明的光节点装置放大输入到输入端口的WDM信号光，然后通过光分路耦合器对放大的WDM信号光进行分支，以将分支光发送到第一和第二光路，并选择光 通过光开关通过第一光路传播，以通过后置放大器放大所选择的光，从而当光节点装置作为光放大重复节点工作时，从输出端口输出放大的光。 当操作状态升级为光分插复用节点时，OADM部分连接在第二光路上的一组连接端口之间，并且利用由光学分支的WDM信号光进行OADM部分的调整 分支耦合器，然后进行光开关的切换以选择第二光路侧的光。 结果，由于可以在短时间内将操作状态从光放大重复节点切换到OADM节点，所以可以以低的初始安装成本提供持续的通信服务。

公开(公告)号：US09560368B2

公开(公告)日：2017-01-31

申请号：US13132426

申请日：2009-11-27

申请人： Masashi Takahashi ,  Muneaki Yamaguchi ,  Hiroaki Ito ,  Takehiro Fujita

发明人： Masashi Takahashi ,  Muneaki Yamaguchi ,  Hiroaki Ito ,  Takehiro Fujita

IPC分类号： H04N7/26 ,  H04N19/44 ,  H04N19/52 ,  H04N19/51

CPC分类号： H04N19/52 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44 ,  H04N19/51 ,  H04N19/61

摘要： High-quality video is provided using a small amount of coded bits. The moving picture decoding method performs inter-frame prediction processing. With the aforementioned inter-frame prediction processing, blocks with similar motion vectors from among the motion vectors in multiple blocks that have already been decoded are combined and a combined area is computed. A predicted vector for a target block to be decoded is computed using the motion vector of the aforementioned combined area, and a motion vector for the aforementioned target block is computed based on the aforementioned predicted vector and a difference vector which is included in a coded stream that is input. A predicted image is generated using the aforementioned motion vector, and a difference image which is included in the aforementioned coded stream and the aforementioned predicted image are added to generate a decoded image.

摘要翻译： 使用少量的编码位提供高质量视频。 运动图像解码方法执行帧间预测处理。 利用上述帧间预测处理，组合具有已经被解码的多个块中的运动矢量中具有相似运动矢量的块，并且计算组合区域。 使用上述组合区域的运动矢量来计算要解码的目标块的预测向量，并且基于上述预测矢量和包括在编码流中的差分矢量来计算上述目标块的运动矢量 那是输入。 使用上述运动矢量生成预测图像，并且添加包括在上述编码流和上述预测图像中的差分图像以生成解码图像。