公开(公告)号：EP3402146A1

公开(公告)日：2018-11-14

申请号：EP17813006.8

申请日：2017-04-13

申请人： NTT Electronics Corporation ,  Nippon Telegraph And Telephone Corporation

发明人： YAMAZAKI, Etsushi ,  NOUCHI, Hiroyuki ,  ONUMA, Yasuharu ,  TAKAMUKU, Tomohiro ,  OYAMA, Katsuichi ,  TAKEI, Kazuhito ,  TOMIZAWA, Masahito ,  KISAKA, Yoshiaki ,  YOSHIDA, Mitsuteru ,  NAKAMURA, Masanori

IPC分类号： H04L27/01 ,  H04B10/61 ,  H04L27/38

摘要： A symbol phase difference compensating portion (6) calculates a first phase difference which is a phase difference between a known pattern extracted from a received signal and a true value of the known pattern and performs phase compensation for the received signal based on the first phase difference. A tentative determination portion (12) tentatively determines an output signal of the symbol phase difference compensating portion (6) to acquire an estimated value of a phase. A first phase difference acquiring portion (13) acquires a second phase difference which is a phase difference between a phase of the output signal and the estimated value of the phase acquired by the tentative determination portion (12). A first phase difference compensating portion (14) performs phase compensation for the output signal based on the second phase difference.

公开(公告)号：EP3319246A1

公开(公告)日：2018-05-09

申请号：EP16846301.6

申请日：2016-09-05

申请人： NTT Electronics Corporation ,  Nippon Telegraph And Telephone Corporation

发明人： ISHIDA, Osamu ,  YAMAZAKI, Etsushi ,  TAKEI, Kazuhito ,  TOMIZAWA, Masahito ,  NISHIZAWA, Hideki

IPC分类号： H04B10/50 ,  H04B10/60

摘要： Signal processing sections (6a,6b) selectively switch modulation/demodulation in low-efficiency modulation system and modulation/demodulation in high-efficiency modulation system, and perform digital signal processing. Parallel-side interfaces of input/output interface sections (A,B) are electrically connected to the signal processing section (6a). A serial-side interface of the input/output interface section (B) is electrically connected to a serial-side interface of the input/output interface section (D). A selection section (7) electrically connects a parallel-side interface of the input/output interface section (C) to the signal processing section (6b) when the low-efficiency modulation system is selected, and electrically connects the parallel-side interface of the input/output interface section (C) to a parallel-side interface of the input/output interface section (D) when the high-efficiency modulation system is selected.

摘要翻译： 信号处理部分（6a，6b）选择性地切换低效率调制系统中的调制/解调和高效率调制系统中的调制/解调，并执行数字信号处理。 输入/输出接口部分（A，B）的并行侧接口电连接到信号处理部分（6a）。 输入/输出接口部分（B）的串行侧接口电连接到输入/输出接口部分（D）的串行侧接口。 当选择低效率调制系统时，选择部分（7）将输入/输出接口部分（C）的并行侧接口电连接到信号处理部分（6b），并且电连接 当选择高效率调制系统时，将输入/输出接口部分（C）连接到输入/输出接口部分（D）的并行侧接口。

公开(公告)号：EP3255815B1

公开(公告)日：2019-12-11

申请号：EP16861870.0

申请日：2016-10-04

申请人： NTT Electronics Corporation ,  Nippon Telegraph and Telephone Corporation

发明人： YAMAZAKI, Etsushi ,  TAKAMUKU, Tomohiro ,  YOSHIDA, Yuki ,  YOSHIDA, Mitsuteru ,  SHIBAHARA, Koki ,  HORIKOSHI, Kengo ,  KISAKA, Yoshiaki

IPC分类号： H04B10/079 ,  G01M11/02 ,  H04B3/06 ,  H04B10/2513 ,  H04B10/61

公开(公告)号：EP3276873B1

公开(公告)日：2019-11-27

申请号：EP17762697.5

申请日：2017-01-16

申请人： NTT Electronics Corporation ,  Nippon Telegraph and Telephone Corporation

发明人： ONUMA, Yasuharu ,  TACHIBANA, Masahiro ,  YAMAZAKI, Etsushi ,  TAKEI, Kazuhito ,  YOSHIDA, Yuki ,  IKEDA, Masayuki ,  KISAKA, Yoshiaki ,  TOMIZAWA, Masahito

IPC分类号： H04L7/00 ,  H03H17/02 ,  H03H17/06

公开(公告)号：EP3273376A1

公开(公告)日：2018-01-24

申请号：EP16764722.1

申请日：2016-03-03

申请人： NTT Electronics Corporation ,  Nippon Telegraph and Telephone Corporation

发明人： YAMAZAKI, Etsushi ,  ISHIDA, Osamu ,  TAKEI, Kazuhito ,  SUZUKI, Yasuhiro ,  NISHIZAWA, Hideki

IPC分类号： G06F21/12 ,  G06F21/10 ,  H04B10/27 ,  H04L12/24 ,  H04L12/28

CPC分类号： G06F21/12 ,  G06F21/10 ,  G06F21/71 ,  G06F2221/0704 ,  H04B10/27 ,  H04B10/40 ,  H04L12/28 ,  H04L41/00

摘要： A processing equipment includes a processing unit (12) having a plurality of functions. A retaining unit (11) retains a device identifier capable of identifying the processing equipment. An interface unit (6) receives a function authentication key which is a code for setting a specific function among the plurality of functions to be enabled or disabled. A control unit (13) sets the specific function to be enabled or disabled according to the function authentication key when a device identifier included in the received function authentication key coincides with the device identifier retained in the retaining unit (11).

摘要翻译： 处理设备包括具有多个功能的处理单元（12）。 保留单元（11）保留能够识别处理设备的设备标识符。 接口单元（6）接收功能验证密钥，该功能验证密钥是用于设置要启用或禁用的多个功能中的特定功能的代码。 当接收到的功能验证密钥中包括的设备标识符与保留单元（11）中保存的设备标识符一致时，控制单元（13）根据功能验证密钥设置特定功能的使能或禁用。

公开(公告)号：EP2434665A1

公开(公告)日：2012-03-28

申请号：EP10777559.5

申请日：2010-05-18

申请人： Nippon Telegraph And Telephone Corporation

发明人： ISHIHARA, Koichi ,  KOBAYASHI, Takayuki ,  KUDO, Riichi ,  TAKATORI, Yasushi ,  MATSUI, Munehiro ,  MIZOGUCHI, Masato ,  SANO, Akihide ,  YAMANAKA, Shogo ,  YAMAZAKI, Etsushi ,  MIYAMOTO, Yutaka ,  YOSHIDA, Eiji ,  NAKAGAWA, Tadao

IPC分类号： H04B10/04 ,  H04B10/02 ,  H04B10/06 ,  H04B10/14 ,  H04B10/18 ,  H04B10/26 ,  H04B10/28 ,  H04L7/08

CPC分类号： H04B10/50 ,  H04B10/07951 ,  H04B10/2513 ,  H04B10/556 ,  H04B10/616 ,  H04B10/6161 ,  H04L7/027

摘要： To enable signal position detection, frequency offset compensation, clock offset compensation, and chromatic dispersion amount estimation in a communication system based on coherent detection using an optical signal, even on a signal having a great offset in an arrival time depending on a frequency due to chromatic dispersion. An optical signal transmitting apparatus generates specific frequency band signals having power concentrated on two or more specific frequencies and transmits a signal including the specific frequency band signals. An optical signal receiving apparatus converts a received signal into a digital signal, detects positions of the specific frequency band signals from the converted digital signal, estimates frequency positions of the detected specific frequency band signals, and detects a frequency offset between an optical signal receiving apparatus and an optical signal transmitting apparatus. Moreover, the optical signal receiving apparatus detects a clock offset between the optical signal receiving apparatus and the optical signal transmitting apparatus from an interval between the estimated frequency positions of the specific frequency band signals. Furthermore, the optical signal receiving apparatus estimates temporal positions of the detected specific frequency band signals and detects a chromatic dispersion amount from a difference between the temporal positions of the specific frequency band signals corresponding to different frequencies.

摘要翻译： 基于使用光学信号相干检测使得能够在通信系统中信号的位置检测，频率偏移补偿，时钟偏移补偿，而色散量估计，即使在信号具有大的到达时间偏移依赖于频率由于 色散。 一种光信号发送装置基因率具有功率的特定频带的信号集中在两个或更多个特定频率，并发送一个信号包括特定频带信号。 的光信号接收装置接收到的信号转换成数字信号转换，检测从转换后的数字信号的特定频带信号的位置，估计检测到的特定频带信号的频率位置，并检测频率在光信号接收装置之间的偏移 和光信号发送装置。 更完了，光信号接收装置检测一个时钟光信号接收装置，并从所述特定频带的信号的估计的频率位置之间的间隔的光信号发送装置之间的时间偏移。 进一步地，光信号接收装置估计检测到的特定频带信号的时间位置和色散从特定频带信号对应于不同频率的时间位置之间的差来检测量。

公开(公告)号：EP3435562B1

公开(公告)日：2020-09-16

申请号：EP17845847.7

申请日：2017-06-21

申请人： NTT Electronics Corporation ,  Nippon Telegraph and Telephone Corporation

发明人： ONUMA, Yasuharu ,  YAMAZAKI, Etsushi ,  TAKAMUKU, Tomohiro ,  TACHIBANA, Masahiro ,  YOSHIDA, Mitsuteru ,  TOMIZAWA, Masahito ,  OKAMOTO, Seiji

IPC分类号： H04B10/61 ,  H04L7/04 ,  H04L7/08 ,  H04L27/26

公开(公告)号：EP3273376B1

公开(公告)日：2020-08-19

申请号：EP16764722.1

申请日：2016-03-03

申请人： NTT Electronics Corporation ,  Nippon Telegraph and Telephone Corporation

发明人： YAMAZAKI, Etsushi ,  ISHIDA, Osamu ,  TAKEI, Kazuhito ,  SUZUKI, Yasuhiro ,  NISHIZAWA, Hideki

IPC分类号： G06F21/12 ,  G06F21/10 ,  H04B10/27 ,  H04L12/24 ,  H04L12/28 ,  H04B10/40

公开(公告)号：EP3435562A1

公开(公告)日：2019-01-30

申请号：EP17845847.7

申请日：2017-06-21

申请人： NTT Electronics Corporation ,  Nippon Telegraph and Telephone Corporation

发明人： ONUMA, Yasuharu ,  YAMAZAKI, Etsushi ,  TAKAMUKU, Tomohiro ,  TACHIBANA, Masahiro ,  YOSHIDA, Mitsuteru ,  TOMIZAWA, Masahito ,  OKAMOTO, Seiji

IPC分类号： H04B10/61 ,  H04L7/04 ,  H04L7/08

摘要： Fourier transform is performed on a reception signal to obtain a first calculation value. Fourier transform is performed on a known signal to obtain a second calculation value. The first calculation value is divided by the second calculation value to obtain a third calculation value. Inverse Fourier transform is performed on the third calculation value to obtain a fourth calculation value. A maximum value of an amplitude of the fourth calculation value and a sample point at which the maximum value is obtained are detected. The position of the known signal in the reception signal is detected from the sample point at which the maximum value is obtained.

公开(公告)号：EP3258598A1

公开(公告)日：2017-12-20

申请号：EP17757454.8

申请日：2017-01-16

申请人： NTT Electronics Corporation ,  Nippon Telegraph and Telephone Corporation

发明人： ONUMA, Yasuharu ,  YAMAZAKI, Etsushi ,  TAKEI, Kazuhito ,  ISHIDA, Osamu ,  HORIKOSHI, Kengo ,  YOSHIDA, Mitsuteru ,  KISAKA, Yoshiaki ,  TOMIZAWA, Masahito

IPC分类号： H03H17/00 ,  H03H17/06

CPC分类号： H03H17/0227 ,  H03H17/00 ,  H03H17/0213 ,  H03H17/06 ,  H03H2017/0214 ,  H03H2017/0245 ,  H03H2017/0298 ,  H04L7/0029 ,  H04L7/0087

摘要： A parallel transfer rate converter (4) inputs first parallel data with number of samples being S1 pieces in synchronism with a first clock, and outputs second parallel data with number of samples being S2=S1×(m/p) pieces (p is an integer equal to or larger than 1) in synchronism with a second clock having a frequency which is p/m times of a frequency of the first clock. A convolution operation device (5) inputs the second parallel data in synchronism with the second clock, generates third parallel data with number of samples being S3=S2×(n/m) pieces (S3 is an integer equal to or larger than 1) by executing a convolution operation with a coefficient indicating a transmission characteristic to the second parallel data, and outputs the third parallel data in synchronism with the second clock.

摘要翻译： 并行传送速率转换器（4）输入与第一时钟同步的具有S1个样本数的第一并行数据，并输出样本数为S2 = S1×（m / p）个片（p是 整数等于或大于1）与频率为第一时钟的频率的p / m倍的第二时钟同步。 卷积运算装置（5）与第2时钟同步地输入第2并行数据，生成样本数为S3 = S2×（n / m）个（S3为1以上的整数）的第3并行数据， 通过使用指示对第二并行数据的传输特性的系数执行卷积运算，并且与第二时钟同步地输出第三并行数据。