-
公开(公告)号：US11705971B2
公开(公告)日：2023-07-18
申请号：US16756200
申请日：2018-08-15
Applicant: NEC Corporation
Inventor： Ryuji Aida , Eduardo Mateo Rodriguez
CPC classification number: H04B10/80 , H04B10/25 , H04Q11/0005
Abstract: An optical transmission apparatus outputs a main signal. An optical transmission apparatus superimposes a monitoring signal on an optical signal and outputs it. A submarine branching apparatus includes a return unit configured to return the monitoring signal received from the optical transmission apparatus and is configured to switch an output destination of the main signal received from the optical transmission apparatus to an optical transmission apparatus or the optical transmission apparatus. The optical transmission apparatus is configured to detect the monitoring signal returned from the return unit and notifies the optical transmission apparatus of a result of the detection. The optical transmission apparatus instructs the submarine branching apparatus to switch the output destination of the main signal in accordance with the notification.
-
公开(公告)号：US11658750B2
公开(公告)日：2023-05-23
申请号：US16756200
申请日：2018-08-15
Applicant: NEC Corporation
Inventor： Ryuji Aida , Eduardo Mateo Rodriguez
CPC classification number: H04B10/80 , H04B10/25 , H04Q11/0005
Abstract: An optical transmission apparatus outputs a main signal. An optical transmission apparatus superimposes a monitoring signal on an optical signal and outputs it. A submarine branching apparatus includes a return unit configured to return the monitoring signal received from the optical transmission apparatus and is configured to switch an output destination of the main signal received from the optical transmission apparatus to an optical transmission apparatus or the optical transmission apparatus. The optical transmission apparatus is configured to detect the monitoring signal returned from the return unit and notifies the optical transmission apparatus of a result of the detection. The optical transmission apparatus instructs the submarine branching apparatus to switch the output destination of the main signal in accordance with the notification.
-
公开(公告)号：US11159264B2
公开(公告)日：2021-10-26
申请号：US16971494
申请日：2019-03-11
Applicant: NEC Corporation
Inventor： Ryuji Aida
Abstract: In order to provide an optical transmission device capable of implementing the spectral control of WDM signals while taking into account optical component characteristics, an optical transmission device is provided with: a WSS; a wavelength monitor that outputs a signal expressing a first spectrum, which is the spectrum of the WSS optical output; an optical processing unit that subjects the WSS optical output to prescribed processing; a temperature monitor that outputs a signal indicating the temperature of an optical processing means; and a control unit that receives the input of the signal expressing the first spectrum and the signal indicating the temperature, and controls the transmission characteristics of the WSS on the basis of the first spectrum and the temperature.
-
公开(公告)号：US10153850B2
公开(公告)日：2018-12-11
申请号：US14913465
申请日：2014-08-20
Applicant: NEC Corporation
Inventor： Ryuji Aida
Abstract: This power feed line switching circuit for switching connection states among a plurality of power feed lines has a plurality of switching circuits, and a variable resistance unit. The switching circuits switch the connection states among the power feed lines. The variable resistance unit is disposed on the connecting paths among the power feed lines before and after the switching, and the resistance values thereof change in conjunction with operations of the switching circuits.
-
公开(公告)号：US20140308036A1
公开(公告)日：2014-10-16
申请号：US14353012
申请日：2012-09-21
Applicant: NEC CORPORATION
Inventor： Ryuji Aida
CPC classification number: H04Q11/0005 , H04B3/44 , H04B10/806
Abstract: A branching unit includes a supply destination switching section that switches one supply destination of each of a plurality of power lines that supply electric power to a unit that transfers an optical signal received from a terminal station unit through a transmission line to another supply destination corresponding to a control signal received from the terminal station unit; a current detection section that outputs a detection signal that includes information that denotes whether currents are flowing in the plurality of power lines and information that represents current directions if currents are flowing; and a monitor section that transmits a monitored result based on at least one of a plurality of detection signals received from the current detection section to the terminal station unit.
Abstract translation: 分支单元包括：供给目的地切换部，其将通过传输线将从终端站单元接收的光信号传递给单元的多个电力线中的每一个的供电目的地切换到对应于 从终端站单元接收的控制信号; 电流检测部，其输出包含表示电流是否流过所述多条电力线的信息的检测信号，以及如果电流流动则表示电流方向的信息; 以及监视部，其基于从所述当前检测部接收到的所述多个检测信号中的至少一个发送到所述终端站单元的监视结果。
-
Patent Agency Ranking
公开(公告)号：US11914191B2
公开(公告)日：2024-02-27
申请号：US17431229
申请日：2020-02-03
Applicant: NEC Corporation
Inventor： Ryuji Aida
IPC: G02B6/293 , G02B6/28 , H04B10/077 , H04J14/02
CPC classification number: G02B6/29383 , G02B6/2835 , G02B6/2938 , H04B10/077 , H04J14/02
Abstract: To provide an optical branch coupler which facilitates communizing the design of an optical transmission path, the optical branch coupler comprising: a first add drop unit for outputting a third optical signal to a first line in which a first optical signal received from the first line and a second optical signal inserted into the first line are multiplexed and outputting the first optical signal; and a second add drop unit for receiving the first optical signal, receiving a sixth optical signal from a second line different from the first line in which a fourth optical signal and a fifth optical signal dropped from the second line are wavelength multiplexed, demultiplexing the fourth and fifth optical signals, and outputting a seventh optical signal to the second line in which the fourth optical signal and the first optical signal transmitted by the first add drop unit are multiplexed.
-
公开(公告)号：US10715270B2
公开(公告)日：2020-07-14
申请号：US16341479
申请日：2017-10-20
Applicant: NEC CORPORATION
Inventor： Ryuji Aida
IPC: H04J14/02 , H04B10/032 , H04B10/03
Abstract: An optical branching/coupling device includes: a first optical branching unit that splits first light with a first and a second wavelength, and outputs second light and third light; a wavelength selector that receives the second light, receives fourth light with a third wavelength, output fifth and sixth light, one of the fifth light and the sixth light including an optical signal of the first wavelength of the second light and including the fourth light, and the other including an optical signal of the second wavelength; a first light switch that receives the fifth light and the sixth light, output one of the fifth light and the sixth light as seventh light, and output the other as eighth light; and a second light switch that receives the third light, receives the eighth light, and outputs the third or the eighth light that have been input as ninth light.
-
公开(公告)号：US10348440B2
公开(公告)日：2019-07-09
申请号：US15570462
申请日：2016-05-09
Applicant: NEC CORPORATION
Inventor： Ryuji Aida
Abstract: In order to provide a power supply path-switching device, a power supply path-switching system, and a power supply path-switching method with which it is possible to utilize to the maximum equipment in which a failure has not occurred without imparting a power supply function to a branch station side even when a failure has occurred in the power supply function of the trunk station side, a power supply path-switching device (10) is provided with a first switching means (20), a second switching means (30), a grounding means (40), and a power consumption circuit (50) that operates by being supplied with the power supply. When a failure occurs in a first power supply line (61), the power consumption circuit (50) grounds the first power supply line (61), one end of the power consumption circuit (50) being connected to the grounding means (40) and a second power supply line (62) being connected to the other end of the power consumption circuit (50). When a failure occurs in the second power supply line (62), the power consumption circuit (50) grounds the second power supply line (62), the first power supply line (61) being connected to one end of the power consumption circuit (50) and the other end of the power consumption circuit (50) being connected to a grounding means (24).
-
公开(公告)号：US20230344521A1
公开(公告)日：2023-10-26
申请号：US18022932
申请日：2021-09-27
Applicant: NEC Corporation
Inventor： Yutaka YANO , Yoshihisa Inada , Takehiro Nakano , Ryuji Aida
IPC: H04B10/524 , H04J14/08
CPC classification number: H04B10/524 , H04J14/08
Abstract: In order to avoid the phenomenon of communication being impeded and signals transmitted by the plurality of slave devices overlapping, a communication system according to the present invention has the first master device transmits a first pulsed light to the first transmission path and receives a return light of the first pulsed light from the second transmission path; each of the slave devices modulates the first pulsed light, and outputs the modulated first pulsed light as the return light of the first pulsed light; and the width of the first pulsed light is narrower than double the shortest distance from among the transmission distance between the slave device outputting the return light and the transmission distance between the first master device and the slave device outputting the return light.
-
公开(公告)号：US11438087B2
公开(公告)日：2022-09-06
申请号：US17368653
申请日：2021-07-06
Applicant: NEC Corporation
Inventor： Ryuji Aida
IPC: H04J14/02 , H04B10/03 , H04B10/032
Abstract: An optical branching/coupling device includes: a first optical branching unit that splits first light with a first and a second wavelength, and outputs second light and third light; a wavelength selector that receives the second light, receives fourth light with a third wavelength, output fifth and sixth light, one of the fifth light and the sixth light including an optical signal of the first wavelength of the second light and including the fourth light, and the other including an optical signal of the second wavelength; a first light switch that receives the fifth light and the sixth light, output one of the fifth light and the sixth light as seventh light, and output the other as eighth light; and a second light switch that receives the third light, receives the eighth light, and outputs the third or the eighth light that have been input as ninth light.
-
-
-
-
-
-
-
-
-
Search Results
32
records
(took 0.017 seconds)
