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1. 发明申请

US20160241341A1 OPTICAL TRANSMISSION APPARATUS, OPTICAL TRANSMISSION SYSTEM, AND POLARIZATION DEPENDENT LOSS MONITOR 有权
标题翻译：光传输装置，光传输系统和极化相关损失监测器
公开(公告)号：US20160241341A1
公开(公告)日：2016-08-18
申请号：US15013190
申请日：2016-02-02
申请人： FUJITSU LIMITED
发明人： Taketo Endo , Kosuke Komaki , Taku Saito , Hirofumi Araki , Makoto SHIMIZU , Hiroshi Nishida
IPC分类号： H04B10/50 , H04L25/03 , H04B10/079
CPC分类号： H04B10/50 , H04B10/0795 , H04B10/612 , H04B10/614 , H04B10/6162 , H04J14/02 , H04L25/03343
摘要： An optical transmission apparatus includes: a coherent detector configured to receive light including different polarization components from an optical transmission path, and perform coherent detection of received light including the different polarization components; an adaptive equalizer configured to adaptively equalize, by a digital filter, a complex electric signal for each of the polarization components obtained by the coherent detection, a gain value for controlling an amplitude of the complex electric signal being applied to the complex electric signal; and a polarization dependent loss monitor configured to determine a polarization dependent loss of the optical transmission path, based on a correction filter parameter obtained by correcting a filter parameter of the digital filter according to the gain value, the filter parameter being adaptively updated by an adaptive equalization of the adaptive equalizer.
摘要翻译：光传输装置包括：相干检测器，被配置为从光传输路径接收包括不同偏振分量的光，并对包括不同偏振分量的接收光进行相干检测; 自适应均衡器，被配置为通过数字滤波器自适应地均衡通过相干检测获得的每个偏振分量的复电信号，用于控制施加到复电信号的复信号的幅度的增益值; 以及偏振相关损耗监视器，其被配置为基于通过根据所述增益值校正所述数字滤波器的滤波器参数而获得的校正滤波器参数来确定所述光传输路径的偏振相关损耗，所述滤波器参数由适应性自适应地更新自适应均衡器的均衡。

2. 发明申请

US20230087839A1 POLARIZATION VARIATION MONITORING SYSTEM AND POLARIZATION VARIATION MONITORING METHOD 有权
公开(公告)号：US20230087839A1
公开(公告)日：2023-03-23
申请号：US17941643
申请日：2022-09-09
申请人： FUJITSU LIMITED
发明人： Ichiro YOKOKURA , Junichi SUGIYAMA , Makoto SHIMIZU , Toshihiro SUZUKI , Takeshi NOMA , Hisao NAKASHIMA , Yuji IKEGAMI
IPC分类号： H04B10/079
摘要： First transmission device includes a first counter that generates counter value incremented in a specified cycle. Second transmission device includes a second counter that generates counter value incremented in the specified cycle. Polarization variation monitoring device acquires a first counter value generated by the first counter and a second counter value extracted by the first transmission device from a received frame transmitted from the second transmission device when the first transmission device detects polarization variation, and a third counter value generated by the second counter and a fourth counter value extracted by the second transmission device from a frame transmitted from the first transmission device when the second detector detects the polarization variation. The polarization variation monitoring device determines an occurrence position of the polarization variation based on the first counter value, the second counter value, the third counter value and the fourth counter value.

3. 发明申请

US20230082206A1 POLARIZATION VARIATION MONITORING SYSTEM AND POLARIZATION VARIATION MONITORING METHOD 有权
公开(公告)号：US20230082206A1
公开(公告)日：2023-03-16
申请号：US17841989
申请日：2022-06-16
申请人： FUJITSU LIMITED
发明人： Ichiro YOKOKURA , Junichi SUGIYAMA , Makoto SHIMIZU , Toshihiro SUZUKI , Takeshi NOMA , Hisao NAKASHIMA
IPC分类号： H04B10/532 , H04B10/61 , H04B10/077
摘要： First transmission device includes a first counter that generates counter value incremented in a specified cycle. Second transmission device includes a second counter that. generates counter value incremented in the specified cycle. Polarization variation monitoring device acquires a first counter value generated by the first counter and a second counter value extracted by the first transmission device from a received frame transmitted from the second transmission device when the first transmission device detects polarization variation, and a third counter value generated by the second counter and a fourth counter value extracted by the second transmission device from a frame transmitted from the first transmission. device when the second detector detects the polarization variation. The polarization variation monitoring device determines an occurrence position of the polarization variation based on the first counter value, the second counter value, the third counter value and the fourth counter value.

4. 发明申请

US20200328806A1 MEASUREMENT DEVICE, TRANSMISSION DEVICE, AND NETWORK SYSTEM 审中-公开
公开(公告)号：US20200328806A1
公开(公告)日：2020-10-15
申请号：US16816378
申请日：2020-03-12
申请人： FUJITSU LIMITED
发明人： Makoto SHIMIZU , Naoki AINAKA , Kenji Ota
IPC分类号： H04B10/079
摘要： A measurement device includes a memory, and circuitry coupled to the memory and configured to obtain first time stamp information transmitted from the first transmission device and added to a first frame in which an error has occurred in the transmission line, obtain second time stamp information transmitted from the second transmission device and added to a second frame in which an error has occurred in the transmission line, and specifies the error occurrence position in the transmission line on the basis of the first time stamp information, the second time stamp information, and a light speed, wherein the first time stamp information is added to the first frame by the first transmission device in time synchronization with the second transmission device, and the second time stamp information is added to the second frame by the second transmission device in time synchronization with the first transmission device.

5. 发明申请

US20140040679A1 RELAY DEVICE AND RECOVERY METHOD 有权
标题翻译：继电器和恢复方法
公开(公告)号：US20140040679A1
公开(公告)日：2014-02-06
申请号：US14054401
申请日：2013-10-15
申请人： FUJITSU LIMITED
发明人： Makoto SHIMIZU , Hidenori SUGAI
IPC分类号： G06F11/16
CPC分类号： G06F11/1666 , G06F11/0745 , G06F11/0763 , H04L49/9057
摘要： A relay device for dividing a storage device into a plurality of unit areas, assigning an unused unit area from among the plurality of unit areas to received channel-specified data, and performing at least one of adjustment of a transmission timing of the data and conversion of the data by using the assigned unit area, is disclosed. The relay device includes an error detector configured to detect an error where the unit area from which the data is to be read is not specified; and an error control configured to recognize a channel of data stored in the unit area that is not specified due to the error detected by the error detector as a target channel, and to invalidate an assignment of the unit area to the recognized target channel.
摘要翻译：一种用于将存储设备划分成多个单元区域的中继设备，将多个单元区域中的未使用单元区域分配给接收到的信道指定数据，并且执行数据的发送定时和转换的调整中的至少一个通过使用分配单元区域的数据。所述中继装置包括：错误检测器，被配置为检测未指定要读取数据的单位区域的错误; 以及错误控制，被配置为识别由于由错误检测器检测到的错误而未被指定的存储在单位区域中的数据的信道作为目标信道，并且将单位区域的分配无效化到识别的目标信道。

6. 发明申请

US20130243114A1 TRANSMISSION APPARATUS, TRANSMISSION METHOD AND METHOD OF ALTERING TRANSMISSION BAND 有权
标题翻译：传动装置，传动方法及变速箱换档方法
公开(公告)号：US20130243114A1
公开(公告)日：2013-09-19
申请号：US13787856
申请日：2013-03-07
申请人： FUJITSU LIMITED
发明人： Junichi SUGIYAMA , Makoto SHIMIZU , Wataru ODASHIMA , Shota SHINOHARA , Hiroyuki HOMMA
IPC分类号： H04L7/00
CPC分类号： H04L7/0016 , H04J3/0691
摘要： A transmission apparatus for transmitting frames accommodating client data over a transmission network, comprising a clock generation unit that generates a clock for timing processing period of signal processing, a deviation detection unit that detects clock deviation between the clock generated by the clock generation unit and the clock used for timing processing period of signal processing by other transmission apparatus that receives the client data from outside the transmission network and adds them to frames, and a timing generation unit that generates timing signal of processing period of signal processing corrected with the clock deviation.
摘要翻译：一种发送装置，用于通过传输网络传送容纳客户端数据的帧，包括产生用于信号处理的定时处理周期的时钟的时钟产生单元，检测由时钟发生单元产生的时钟和时钟偏差之间的时钟偏差的偏差检测单元用于由传输网络外部接收客户端数据的其他传输装置的信号处理定时处理周期的时钟，并将其相加到帧;以及定时生成单元，生成用时钟偏差校正的信号处理的处理周期的定时信号。

7. 发明申请

US20130232371A1 CLOCK CONVERSION APPARATUS, FRAME PROCESSING APPARATUS AND FREQUENCY CONTROL METHOD 有权
标题翻译：时钟转换装置，框架加工装置和频率控制方法
公开(公告)号：US20130232371A1
公开(公告)日：2013-09-05
申请号：US13846248
申请日：2013-03-18
申请人： FUJITSU LIMITED
发明人： Makoto SHIMIZU , Masato HORI
IPC分类号： G06F1/12
CPC分类号： G06F1/12 , H04J3/076 , H04L7/005 , H04L7/033 , H04L7/0337
摘要： A clock conversion apparatus comprising, an elastic store memory in which data are written in synchronization with a first clock and from which data are read out in synchronization with a second clock, a phase comparator for detecting phase difference between a third clock obtained by imparting a first variable phase shift to a divided clock of the first clock and a fourth clock obtained by imparting a second variable phase shift to a divided clock of the second clock, and an oscillator for generating a clock having frequency in accordance with the phase difference as the second clock.
摘要翻译：一种时钟转换装置，包括：与第一时钟同步地写入数据并与第二时钟同步地从其读出数据的弹性存储器;相位比较器，用于检测通过赋予第一时钟获得的第三时钟之间的相位差; 第一可变相移到第一时钟的分频时钟和通过对第二时钟的分频时钟赋予第二可变相移而获得的第四时钟，以及振荡器，用于产生具有根据相位差的频率的时钟作为第二时钟。

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