公开(公告)号：EP3188404B1

公开(公告)日：2020-10-07

申请号：EP15837039.5

申请日：2015-08-20

申请人： NEC Corporation

发明人： OCHI, Takao ,  YOSHINO, Ken-ichiro ,  TAJIMA, Akio

IPC分类号： H04L9/08 ,  H04L9/12 ,  H04L12/803 ,  H04L12/863

公开(公告)号：EP4358437A1

公开(公告)日：2024-04-24

申请号：EP23202342.4

申请日：2023-10-09

申请人： NEC Corporation

发明人： YOSHINO, Ken-ichiro

IPC分类号： H04B10/50 ,  G02F1/21 ,  H04B10/556 ,  H04B10/70

CPC分类号： H04B10/5053 ,  H04B10/50572 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/556 ,  G02F1/212 ,  H04B10/70

摘要： A communication device includes a nested modulator composed of sub modulators and a phase shifter. The nested modulator is controlled by: modulating a double pulse by phase and intensity modulation according to transmission information, wherein the double pulse thus modulated is transmitted to another communication device; controlling bias voltages applied respectively to the sub modulators so that a first error rate on the intensity modulation is minimized; and controlling a bias voltage applied to the phase shifter so that a second error rate on the phase modulation is minimized.

公开(公告)号：EP3188404A1

公开(公告)日：2017-07-05

申请号：EP15837039.5

申请日：2015-08-20

申请人： NEC Corporation

发明人： OCHI, Takao ,  YOSHINO, Ken-ichiro ,  TAJIMA, Akio

IPC分类号： H04L9/12 ,  H04L9/08

摘要： In order to achieve the dispersion of a processing load between communication devices that perform information transmission, an information communication system according to an exemplary aspect of the present invention includes a first transmission system configured to transmit information in a direction from a first communication device to a second communication device; and a second transmission system configured to transmit information in a direction opposite to the direction of the first transmission system, wherein part of transmission information is received as received information in each of the first transmission system and the second transmission system.

摘要翻译： 为了实现执行信息传输的通信设备之间的处理负载的分散，根据本发明示例性方面的信息通信系统包括：第一传输系统，被配置为在从第一通信设备到第一通信设备的方向 第二通信设备; 以及第二传输系统，被配置为在与所述第一传输系统的方向相反的方向上传输信息，其中，在所述第一传输系统和所述第二传输系统中的每一个中接收部分传输信息作为接收到的信息。

公开(公告)号：EP3512158A1

公开(公告)日：2019-07-17

申请号：EP17848656.9

申请日：2017-08-31

申请人： NEC Corporation ,  National Institute of Information and Communications Technology ,  National University Corporation Hokkaido University

发明人： YOSHINO, Ken-ichiro ,  FUJIWARA, Mikio ,  SASAKI, Masahide ,  TOMITA, Akihisa

IPC分类号： H04L9/12 ,  H04B10/516 ,  H04B10/70 ,  H04L9/08

摘要： A quantum key distribution device is provided with an encoding unit which encodes an optical pulse train; an intensity modulating unit which subjects the encoded optical pulse train to N (where N is an integer at least equal to 3) types of intensity modulation having mutually different intensities, with different timings; and a first key distillation processing unit which generates an encryption key on the basis of a data sequence obtained by removing data obtained from an optical pulse having a specific modulation pattern from a data sequence used by the encoding unit and the intensity modulating unit.