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公开(公告)号：US11979694B2
公开(公告)日：2024-05-07
申请号：US17795603
申请日：2020-01-30
发明人： Osamu Moriwaki , Shunichi Soma , Keita Yamaguchi , Kenya Suzuki , Seiki Kuwabara , Tetsuro Inui , Shuto Yamamoto , Seiji Okamoto , Hideki Nishizawa
IPC分类号： H04Q11/00
CPC分类号： H04Q11/0071
摘要： An optical and electronic integrated switch includes a network processor that controls the functions of the packet switch, a plurality of optical transceivers having photoelectric conversion functions, and a plurality of optical switches. The optical switches include different types of optical core switch and a plurality of optical-path selection switches. The optical transceivers provided near the processor have a regenerative relay function that regenerates optical signals and turns back the optical signals, and perform optical communication with a communication counterpart via the optical switches. In the optical communication, optical switches of the different types can cooperate to set paths for optical cut-through in which path selection is performed such that inputted optical signals are outputted without the intervention of the processor. This optical cut-through can be effectively performed without imposing a signal processing burden that consumes electric power on the processor.
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公开(公告)号：US10756819B2
公开(公告)日：2020-08-25
申请号：US16842117
申请日：2020-04-07
IPC分类号： H04B10/54 , H04J14/02 , H04B10/548 , H04B10/516 , H04B10/50 , H04L1/00
摘要： An encoding device includes an encoding unit, DA converters, light sources, intensity modulators, and wavelength multiplexers. The encoding unit adds (NM/2) to an encoded signal having a negative minimum value in a range of the encoded signal among encoded signals of N channels of (NM+1) values obtained by calculating an inner product of a Hadamard matrix of N rows and N columns and a matrix having elements of N intensity signals of (M+1) values. The DA converters of the channels convert the encoded signals of the channels from digital signals into electrical analog signals. The light sources output light of wavelengths for use in the channels. The light intensity modulators of the channels intensity-modulate the light output from the light sources with the encoded signals converted into the electrical analog signals by the DA converters. The wavelength multiplexer outputs a wavelength-multiplexed signal obtained by wavelength-multiplexing the light intensity-modulated by the light intensity modulators.
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公开(公告)号：US12034484B2
公开(公告)日：2024-07-09
申请号：US17797743
申请日：2020-02-17
发明人： Takafumi Tanaka , Hideki Nishizawa , Tetsuro Inui , Seiki Kuwabara , Shuto Yamamoto , Seiji Okamoto
摘要： A virtual environment optical communication network is generated by setting configuration parameters of physical packages of a real environment optical communication network in package emulators that a computer program has virtually constructed to implement the physical packages, the real environment optical communication network being constructed by a plurality of node devices in which the physical packages are mounted, pieces of configuration data are generated based on pieces of resource data indicating resources required for optical paths detected based on acquired configuration parameters and a requested transmission mode, optical paths are set in the virtual environment optical communication network based on the generated pieces of configuration data, and optical paths are set in the real environment optical communication network based on the pieces of configuration data that have been used to set the optical paths.
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公开(公告)号：US10651945B2
公开(公告)日：2020-05-12
申请号：US16340658
申请日：2017-10-16
IPC分类号： H04B10/54 , H04J14/02 , H04B10/548 , H04B10/516 , H04B10/50
摘要： An encoding device includes an encoding unit, DA converters, light sources, intensity modulators, and wavelength multiplexers. The encoding unit adds (NM/2) to an encoded signal having a negative minimum value in a range of the encoded signal among encoded signals of N channels of (NM+1) values obtained by calculating an inner product of a Hadamard matrix of N rows and N columns and a matrix having elements of N intensity signals of (M+1) values. The DA converters of the channels convert the encoded signals of the channels from digital signals into electrical analog signals. The light sources output light of wavelengths for use in the channels. The light intensity modulators of the channels intensity-modulate the light output from the light sources with the encoded signals converted into the electrical analog signals by the DA converters. The wavelength multiplexer outputs a wavelength-multiplexed signal obtained by wavelength-multiplexing the light intensity-modulated by the light intensity modulators.
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公开(公告)号：US11706065B2
公开(公告)日：2023-07-18
申请号：US17594926
申请日：2020-05-08
IPC分类号： H04L27/01
CPC分类号： H04L27/01
摘要： A device generates a symbol sequence by performing adaptive equalization by an estimation inverse transfer function of a transmission line on a reception signal sequence extracted from the transmission line, and performing provisional determination on the symbol sequence generated; generates a plurality of the symbol sequences indicating transmission line states in a range of a provisional determination symbol provisionally determined and nearby symbols of the provisional determination symbol; generates, based on the plurality of the symbol sequences indicating the transmission line states generated and an estimation transfer function of the transmission line, an estimation reception symbol sequence for each of the transmission line states; calculates a metric between the symbol sequence obtained from the reception signal sequence and each of a plurality of the estimation reception symbol sequences; selects a most likelihood estimation reception symbol sequence of the plurality of the estimation reception symbol sequences, based on the calculated metric, the provisional determination symbol, and the nearby symbols of the provisional determination symbol; and determines a transmission symbol sequence.
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公开(公告)号：US20230082854A1
公开(公告)日：2023-03-16
申请号：US17801130
申请日：2020-02-26
发明人： Hideki Nishizawa , Seiki Kuwabara , Seiji Okamoto , Shuto Yamamoto , Tetsuro Inui , Shunichi Soma , Kenya Suzuki , Osamu Moriwaki , Keita Yamaguchi
IPC分类号： H04B10/61 , H04L45/00 , H04B10/2575
摘要： A photo-electron fusion switch that can perform optical communications without any trouble, even when nodes of a communication source and a communication partner that are large in transmission capacity are connected, and makes it possible to realize a concentrated arrangement of devices having similar functions and reduce the communication processing time is connected to communication source's information processing devices and communication partner's information processing devices and information processing devices that are each different in transmission speed so as to configure an optical network system. The photo-electron fusion switch includes a network processor of an electronic circuit for controlling packet switch functions, a plurality of optical transmitter/receivers that can support coherent communications and has a photoelectric conversion function capable of transmitting and receiving optical signals different in transmission speed, an optical line switching device, and a plurality of multiplexing/separators. Each multiplexing/separator simultaneously transmits and receives respective optical signals different in transmission speed to and from the nodes via optical waveguides.
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公开(公告)号：US20230073384A1
公开(公告)日：2023-03-09
申请号：US17795603
申请日：2020-01-30
发明人： Osamu Moriwaki , Shunichi Soma , Keita Yamaguchi , Kenya Suzuki , Seiki Kuwabara , Tetsuro Inui , Shuto Yamamoto , Seiji Okamoto , Hideki Nishizawa
IPC分类号： H04Q11/00
摘要： An optical and electronic integrated switch includes a network processor that controls the functions of the packet switch, a plurality of optical transceivers having photoelectric conversion functions, and a plurality of optical switches. The optical switches include different types of optical core switch and a plurality of optical-path selection switches. The optical transceivers provided near the processor have a regenerative relay function that regenerates optical signals and turns back the optical signals, and perform optical communication with a communication counterpart via the optical switches. In the optical communication, optical switches of the different types can cooperate to set paths for optical cut-through in which path selection is performed such that inputted optical signals are outputted without the intervention of the processor. This optical cut-through can be effectively performed without imposing a signal processing burden that consumes electric power on the processor.
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公开(公告)号：US10693562B2
公开(公告)日：2020-06-23
申请号：US16340658
申请日：2017-10-16
IPC分类号： H04B10/54 , H04J14/02 , H04B10/548 , H04B10/516 , H04B10/50
摘要： An encoding device includes an encoding unit, DA converters, light sources, intensity modulators, and wavelength multiplexers. The encoding unit adds (NM/2) to an encoded signal having a negative minimum value in a range of the encoded signal among encoded signals of N channels of (NM+1) values obtained by calculating an inner product of a Hadamard matrix of N rows and N columns and a matrix having elements of N intensity signals of (M+1) values. The DA converters of the channels convert the encoded signals of the channels from digital signals into electrical analog signals. The light sources output light of wavelengths for use in the channels. The light intensity modulators of the channels intensity-modulate the light output from the light sources with the encoded signals converted into the electrical analog signals by the DA converters. The wavelength multiplexer outputs a wavelength-multiplexed signal obtained by wavelength-multiplexing the light intensity-modulated by the light intensity modulators.
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公开(公告)号：US12107762B2
公开(公告)日：2024-10-01
申请号：US17794526
申请日：2020-01-30
发明人： Osamu Moriwaki , Shunichi Soma , Keita Yamaguchi , Kenya Suzuki , Seiki Kuwabara , Tetsuro Inui , Shuto Yamamoto , Seiji Okamoto , Hideki Nishizawa
CPC分类号： H04L45/60 , H04Q11/0005 , H04Q2011/0015 , H04Q2011/0022 , H04Q2011/0041
摘要： A high-performance optical and electronic integrated switch capable of effectively extending the transmission distance includes a network processor that controls the functions of the packet switch, a plurality of optical transceivers provided near the processor and having a photoelectric conversion function, and an optical relay switch. A plurality of optical waveguides are connected to the input and output sides of the optical relay switch. Each optical transceiver has a regeneration function that performs optical-electrical conversion on inputted optical signals, then turns back the converted signals, and performs signal conversion on them, and its input side is connected with a routing optical waveguide included in the optical waveguides on the output side of the switch and its output side is connected with a routing optical waveguide included in the optical waveguides on the input side of the switch. The optical waveguides include ones for connecting to an external communication counterpart.
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公开(公告)号：US11881897B2
公开(公告)日：2024-01-23
申请号：US17801130
申请日：2020-02-26
发明人： Hideki Nishizawa , Seiki Kuwabara , Seiji Okamoto , Shuto Yamamoto , Tetsuro Inui , Shunichi Soma , Kenya Suzuki , Osamu Moriwaki , Keita Yamaguchi
IPC分类号： H04B10/61 , H04B10/2575 , H04L45/00
CPC分类号： H04B10/61 , H04B10/25759 , H04L45/56
摘要： A photo-electron fusion switch that can perform optical communications without any trouble, even when nodes of a communication source and a communication partner that are large in transmission capacity are connected, and makes it possible to realize a concentrated arrangement of devices having similar functions and reduce the communication processing time is connected to communication source's information processing devices and communication partner's information processing devices and information processing devices that are each different in transmission speed so as to configure an optical network system. The photo-electron fusion switch includes a network processor of an electronic circuit for controlling packet switch functions, a plurality of optical transmitter/receivers that can support coherent communications and has a photoelectric conversion function capable of transmitting and receiving optical signals different in transmission speed, an optical line switching device, and a plurality of multiplexing/separators. Each multiplexing/separator simultaneously transmits and receives respective optical signals different in transmission speed to and from the nodes via optical waveguides.
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