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1. 发明申请

US20220209870A1 SERVER, OPTICAL TRANSMISSION METHOD, OPTICAL TRANSMISSION SYSTEM, AND OPTICAL TRANSMISSION PROGRAM 有权
公开(公告)号：US20220209870A1
公开(公告)日：2022-06-30
申请号：US17606249
申请日：2019-05-08
申请人： Nippon Telegraph and Telephone Corporation
发明人： Toshiya Matsuda , Kana Masumoto , Kazuyuki Matsumura
IPC分类号： H04B10/61 , H04L1/00 , H04B10/516
摘要： A server (1A) that performs optical transmission using an optical transmission line (f) includes a transmitter (Tx 11a) that transmits an optical signal to another server (1B), a receiver (Rx 12a) that receives the optical signal from the other server (1B), a storage device (20a) that stores data and an error correction code (ECC) added to the data, and a control unit (CPU 21a) that controls conversion of the data and the ECC into the optical signal, conversion of the optical signal into the data and the ECC, and error correction of the data using the ECC, and a transmission distance of the optical transmission line (f) is a transmission distance for which an error rate does not exceed an allowable value of the error rate before correction which makes the error rate after correction based on the error correction using the ECC be equal to or less than a reference error rate.

2. 发明授权

US11206086B2 Optical transceiver 有权
公开(公告)号：US11206086B2
公开(公告)日：2021-12-21
申请号：US17054596
申请日：2019-05-22
申请人： Nippon Telegraph and Telephone Corporation
发明人： Toshiya Matsuda , Toru Homemoto , Kana Masumoto , Masaru Katayama , Kazuyuki Matsumura
IPC分类号： H04B10/00 , H04B10/40 , H04B10/077 , H04B10/50 , H04B10/572 , H04B10/69
摘要： [Problem] To allow addition of new functions to an optical module at a low cost.
[Solution] An optical transceiver 11a includes a CPU 21 configured to perform download control of a program for executing an additional function to be newly added to the optical transceiver 11a, a wireless transmitting and receiving device 22 configured to receive, in accordance with the download control, the program from a terminal device 13 that stores various programs, and a memory unit 23 configured to store the program that is received. The CPU 21 is configured to perform, by interrupting a monitoring and control signal from a transmission device 12, control to write data related to transmission and reception processing of a Tx 25a and a Rx 26a in accordance with execution of the programs stored in the memory unit 23 in a storage area at a specific address of an EEPROM 24.

3. 发明授权

US10951344B2 Optical transmitter, optical receiver, and optical transmission system 有权
公开(公告)号：US10951344B2
公开(公告)日：2021-03-16
申请号：US16626468
申请日：2018-06-21
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Toshiya Matsuda , Toru Homemoto , Kana Masumoto , Masaru Katayama , Katsutoshi Koda
IPC分类号： H04J14/02 , H04J14/06 , H04B10/516 , H04B10/60
摘要： An optical transmitter generates two modulated optical signals by modulating two optical carriers respectively with two binary bit sequences by on-off keying and generates an orthogonal polarization multiplexed optical signal from the two modulated optical signals. The two optical carriers respectively have peak frequency components spaced apart from each other by a predetermined frequency difference and located such that a central frequency of a WDM channel of a WDM grid falls between the peak frequency components. An optical receiver separates the orthogonal polarization multiplexed optical signal into two signals in which components of the two modulated optical signals are combined with different combination ratios, by means of a 1-input, 2-output asymmetric filter whose two optical transmittances intersect at the WDM grid and each have a free spectral range equal to or twice the channel spacing of the WDM grid, and restores the two modulated optical signals from the separated two signals using a DSP.

4. 发明申请

US20150236796A1 DIGITAL SIGNAL PROCESSING DEVICE 有权
标题翻译：数字信号处理装置
公开(公告)号：US20150236796A1
公开(公告)日：2015-08-20
申请号：US14426054
申请日：2013-07-18
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Fukutaro Hamaoka , Takeshi Seki , Toshiya Matsuda , Akira Naka
IPC分类号： H04B10/61 , H04L27/227 , H04L27/22
CPC分类号： H04B10/6165 , H04L25/03 , H04L25/06 , H04L27/223 , H04L27/227
摘要： A digital signal processor which performs digital signal processing of a digital signal includes a statistical analysis method which calculates a moving average and a standard deviation from the digital signal, performs statistical decision deciding whether or not the digital signal is within a predetermined range obtained from the moving average and the standard deviation, and corrects the digital signal outside the range within the range. Statistical analysis of the digital signal is performed, thereby suppressing transient changes without increasing the number of times of averaging during the digital signal processing.
摘要翻译：执行数字信号的数字信号处理的数字信号处理器包括：计算与数字信号的移动平均值和标准偏差的统计分析方法，执行统计判定，判定数字信号是否在从移动平均值和标准偏差，并将范围内的数字信号校正。执行数字信号的统计分析，由此抑制瞬时变化而不增加在数字信号处理期间的平均次数。

5. 发明授权

US11595120B2 Optical transmission system and unused channel verification method 有权
公开(公告)号：US11595120B2
公开(公告)日：2023-02-28
申请号：US17293320
申请日：2019-10-30
申请人： Nippon Telegraph and Telephone Corporation
发明人： Kana Masumoto , Toshiya Matsuda
IPC分类号： H04B10/032 , H04B10/516
摘要： A function of detecting an unused path through which actual data is not transmitted in a long-distance redundant network is realized at low cost. In an optical transmission system 20, each of the optical transceivers 21a and 21b that are connected to each other by an optical fiber cable 22 and disposed separately includes a protocol IC unit 35. The protocol IC unit 35 transmits an idle signal A1 with empty data using an optical signal P1 to an unused path of the optical fiber cable 22. At the time of this transmission, the protocol IC unit 35 outputs, to the transmission unit 33, a control signal C1 for performing, at a fixed modulation period, ON/OFF modulation on the optical signal P1 on which the idle signal A1 is superimposed. Also, the protocol IC unit 35 transmits an OAM signal O1 at an OAM period that is a period different from a modulation period, and performs control to turn ON the control signal C1 at the time of this transmission. The protocol IC unit 35 performs control to set the QAM period T2 as a period longer than or equal to a plurality of modulation periods T1. The transmission unit 33 is configured to perform ON/OFF modulation on the optical signal P1 using the control signal C1, and transmits the modulated optical signal P1.

6. 发明申请

US20220352990A1 OPTICAL RECEIVER 有权
公开(公告)号：US20220352990A1
公开(公告)日：2022-11-03
申请号：US17296572
申请日：2019-11-15
申请人： Nippon Telegraph and Telephone Corporation
发明人： Toshiya Matsuda , Kana Masumoto , Kazuyuki Matsumura
IPC分类号： H04B10/61 , H04J14/06
摘要： [Problem] An optical receiver using a polarization demultiplexing technique is miniaturized.
[Solution] An optical receiver 100A for receiving a polarization multiplexed signal obtained by performing orthogonal polarization multiplexing on two optical signals. The optical receiver includes an IL 1 splitting the polarization multiplexed signal into two transmitted signals that are asymmetric in terms of a light transmission characteristic, O/Es 2a and 2b converting the transmitted signals resulting from the split into electrical signals, a downsampler 3 downsampling the electrical signals resulting from the conversion to generate low-speed digital signals, a calculator 4 calculating coefficients of a polarization separation matrix from the resultant low-speed digital signals, a level adjuster 5A adjusting, in accordance with the coefficients resulting from the calculation, signal levels of the electrical signals resulting from the conversion to generate a plurality of adjustment signals, adders 6Aa and 6Ab adding the generated adjustment signals to generate addition signals, and discriminators 7a and 7b restoring and extracting the two optical signals from the generated addition signals.

7. 发明授权

US11451293B2 Optical transmission system and unused channel verification method 有权
公开(公告)号：US11451293B2
公开(公告)日：2022-09-20
申请号：US17291520
申请日：2019-10-30
申请人： Nippon Telegraph and Telephone Corporation
发明人： Kana Masumoto , Toshiya Matsuda
IPC分类号： H04B10/073 , H04B10/50 , H04B10/60 , H04B10/40 , H04B10/43
摘要： An unused path through which actual data is not transmitted in a long-distance redundant network can be appropriately detect, and this function is realized at low cost. A transmission unit 33 of optical transceivers 21a and 21b connected to each other by an optical fiber cable 22 in an optical transmission system 20 includes a laser 37 for emitting a laser beam serving as an optical signal P1 to the optical fiber cable 22, and an optical intensity control unit 35 for performing control to change the optical level of the optical signal of the laser beam. Each of the optical transceivers 21a and 21b includes a control unit 31 for superimposing each of an idle signal A1, an OAM signal O1, and an actual data signal D1 on an XGMII signal 31s and outputting this XGMII signal 31s to the transmission unit 33 that transmits the optical signal P1, and a signal determination unit 32 for determining unique information regarding each signal output to the transmission unit 33 and outputting a determination result signal 32s. The optical intensity control unit 35 performs control to change the optical level of the optical signal P1 on which a signal of the determination of each signal indicated by the determination result signal 32s is superimposed to different optical levels L1 to L3 between the signals.

8. 发明申请

US20220006522A1 OPTICAL TRANSMISSION SYSTEM AND UNUSED CHANNEL VERIFICATION METHOD 有权
公开(公告)号：US20220006522A1
公开(公告)日：2022-01-06
申请号：US17291520
申请日：2019-10-30
申请人： Nippon Telegraph and Telephone Corporation
发明人： Kana Masumoto , Toshiya Matsuda
IPC分类号： H04B10/073 , H04B10/50
摘要： An unused path through which actual data is not transmitted in a long-distance redundant network can be appropriately detect, and this function is realized at low cost. A transmission unit 33 of optical transceivers 21a and 21b connected to each other by an optical fiber cable 22 in an optical transmission system 20 includes a laser 37 for emitting a laser beam serving as an optical signal P1 to the optical fiber cable 22, and an optical intensity control unit 35 for performing control to change the optical level of the optical signal of the laser beam. Each of the optical transceivers 21a and 21b includes a control unit 31 for superimposing each of an idle signal A1, an OAM signal O1, and an actual data signal D1 on an XGMII signal 31s and outputting this XGMII signal 31s to the transmission unit 33 that transmits the optical signal P1, and a signal determination unit 32 for determining unique information regarding each signal output to the transmission unit 33 and outputting a determination result signal 32s. The optical intensity control unit 35 performs control to change the optical level of the optical signal P1 on which a signal of the determination of each signal indicated by the determination result signal 32s is superimposed to different optical levels L1 to L3 between the signals.

9. 发明申请

US20210143911A1 OPTICAL TRANSCEIVER 有权
公开(公告)号：US20210143911A1
公开(公告)日：2021-05-13
申请号：US17054596
申请日：2019-05-22
申请人： Nippon Telegraph and Telephone Corporation
发明人： Toshiya Matsuda , Toru Homemoto , Kana Masumoto , Masaru Katayama , Kazuyuki Matsumura
IPC分类号： H04B10/40 , H04B10/077 , H04B10/50 , H04B10/572 , H04B10/69
摘要： [Problem] To allow addition of new functions to an optical module at a low cost.
[Solution] An optical transceiver 11a includes a CPU 21 configured to perform download control of a program for executing an additional function to be newly added to the optical transceiver 11a, a wireless transmitting and receiving device 22 configured to receive, in accordance with the download control, the program from a terminal device 13 that stores various programs, and a memory unit 23 configured to store the program that is received. The CPU 21 is configured to perform, by interrupting a monitoring and control signal from a transmission device 12, control to write data related to transmission and reception processing of a Tx 25a and a Rx 26a in accordance with execution of the programs stored in the memory unit 23 in a storage area at a specific address of an EEPROM 24.

10. 发明授权

US09749061B2 Digital signal processing device 有权
公开(公告)号：US09749061B2
公开(公告)日：2017-08-29
申请号：US14426054
申请日：2013-07-18
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Fukutaro Hamaoka , Takeshi Seki , Toshiya Matsuda , Akira Naka
IPC分类号： H04B10/61 , H04L27/22 , H04L27/227
CPC分类号： H04B10/6165 , H04L25/03 , H04L25/06 , H04L27/223 , H04L27/227
摘要： A digital signal processor which performs digital signal processing of a digital signal includes a statistical analysis method which calculates a moving average and a standard deviation from the digital signal, performs statistical decision deciding whether or not the digital signal is within a predetermined range obtained from the moving average and the standard deviation, and corrects the digital signal outside the range within the range. Statistical analysis of the digital signal is performed, thereby suppressing transient changes without increasing the number of times of averaging during the digital signal processing.

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