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1. 发明授权

US06775483B1 System, device, and method for wavelength-division multiplex optical transmission 失效
标题翻译：用于波分复用光传输的系统，设备和方法
公开(公告)号：US06775483B1
公开(公告)日：2004-08-10
申请号：US09659758
申请日：2000-09-11
申请人： Tsuyoshi Ikushima , Hiroyuki Sasai , Masaru Fuse
发明人： Tsuyoshi Ikushima , Hiroyuki Sasai , Masaru Fuse
IPC分类号： H04B1004
CPC分类号： H04J14/02 , H04B2201/70715
摘要： A wavelength-division multiplex optical transmission system is provided with: preliminary optical modulators 111 to 11n for outputting optical signals having different wavelengths from each other after being modulated by communications signals 11 to 1n that are signals to be supplied to specific optical receiving parts; an optical fiber 510 for transmitting the multiplexed optical signal; a subsequent optical modulator 210 for collectively modulating the transmitted optical signal so as to collectively modulate the optical signals being multiplexed by a broadcast signal 20 that is to be supplied equally to all optical receiving parts; and an optical fiber 520 for transmitting the modulated optical signal. A frequency band for the broadcast signal 20 is set not to overlap with any of those of the communications signals 11 to 1n. Accordingly, in each of optical receiving parts 411 to 41n, an electrical signal in which the communication signal 11 to 1n and the broadcast signal 20 are frequency-multiplexed can be obtained.
摘要翻译：波分多路复用光传输系统具有：用于在通过被提供给特定的光接收部分的信号的通信信号11至1n调制之后，输出具有不同波长的光信号的初步光调制器111至11n; 用于发送复用的光信号的光纤510; 随后的光调制器210，用于集中调制所发送的光信号，以便共同地调制由要被均等地提供给所有光接收部分的广播信号20复用的光信号; 以及用于发送调制光信号的光纤520。广播信号20的频带被设定为不与通信信号11至1n中的任一个重叠。因此，在每个光接收部分411至41n中，可以获得通信信号11至1n和广播信号20被频率复用的电信号。

2. 发明授权

US06626588B1 Optical transmission apparatus 失效
标题翻译：光传输装置
公开(公告)号：US06626588B1
公开(公告)日：2003-09-30
申请号：US09503030
申请日：2000-02-14
申请人： Hiroyuki Sasai , Tsuyoshi Ikushima , Masaru Fuse
发明人： Hiroyuki Sasai , Tsuyoshi Ikushima , Masaru Fuse
IPC分类号： H04B1008
CPC分类号： H04B10/2537
摘要： An optical transmission apparatus capable of suppressing SBS by multiplexing an input signal with a pilot signal, and further capable of eliminating an adverse effect of intermodulation distortion between the input signal and the pilot signal is provided. When the input signal is a frequency-multiplexed signal obtained by multiplexing a plurality of signals aligned on a frequency axis at regular intervals &Dgr;f (&Dgr;f>0), a pilot signal generation part generates the pilot signal having a frequency {m−(1/2)}×&Dgr;f (m is an arbitrary natural number). A multiplex part multiplexes the input signal (electrical signal to be transmitted) with the pilot signal generated by the pilot signal generation part. An electrical-optical conversion part converts an electric signal outputted from the multiplex part into an optical signal through direct intensity modulation.
摘要翻译：提供一种能够通过将输入信号与导频信号进行复用来抑制SBS，并且还能够消除输入信号和导频信号之间的互调失真的不利影响的光传输装置。当输入信号是通过以规则间隔Deltaf（Deltaf> 0）复用在频率轴上排列的多个信号而获得的频率复用信号时，导频信号产生部分产生具有频率{m-（1 / 2xDeltaf（m是任意自然数），多路复用部分将输入信号（要发送的电信号）与由导频信号产生部分产生的导频信号进行多路复用，电光转换部分将从多路复用通过直接强度调制部分成为光信号。

3. 发明授权

US08180052B2 Data communication apparatus 失效
标题翻译：数据通信装置
公开(公告)号：US08180052B2
公开(公告)日：2012-05-15
申请号：US11661313
申请日：2005-08-31
申请人： Masaru Fuse , Satoshi Furusawa , Tsuyoshi Ikushima , Toru Shiozaki
发明人： Masaru Fuse , Satoshi Furusawa , Tsuyoshi Ikushima , Toru Shiozaki
IPC分类号： H04K1/00
CPC分类号： H04L9/088 , H04L9/12 , H04L2209/08
摘要： A data communication apparatus wherein stealthiness is enhanced by significantly increasing the time required for a wiretapper to decrypt an encrypted text. The data communication apparatus is constituted by connecting a data transmitting apparatus and a data receiving apparatus via a transmission path. The data transmitting apparatus receives a first predetermined initial value (key information) and information data, generates a multi-valued signal, the level of which varies substantially in a random number manner, and converts the multi-valued signal to a modulated signal of a predetermined modulation format for transmission. The data receiving apparatus demodulates the modulated signal to output the multi-valued signal, and then reproduces the information data from the multi-valued signal and a received second predetermined initial value (key information).
摘要翻译：一种数据通信装置，其中通过显着增加窃听者解密加密文本所需的时间来增强隐身性。数据通信装置通过经由传输路径连接数据发送装置和数据接收装置构成。数据发送装置接收第一预定初始值（密钥信息）和信息数据，生成其电平基本上以随机数方式变化的多值信号，并将多值信号转换为用于传输的预定调制格式。数据接收装置解调调制信号以输出多值信号，然后从多值信号和接收到的第二预定初始值（密钥信息）再现信息数据。

4. 发明授权

US07839946B2 Data communication apparatus and data communication method 有权
标题翻译：数据通信装置和数据通信方法
公开(公告)号：US07839946B2
公开(公告)日：2010-11-23
申请号：US11889708
申请日：2007-08-15
申请人： Tomokazu Sada , Masaru Fuse , Satoshi Furusawa , Tsuyoshi Ikushima , Tomoaki Ohira
发明人： Tomokazu Sada , Masaru Fuse , Satoshi Furusawa , Tsuyoshi Ikushima , Tomoaki Ohira
IPC分类号： H04L25/34
CPC分类号： H04L25/4917
摘要： A data communication apparatus improves security against eavesdropping for secret communication by using Y-00 protocol. A multi-level code generation section generates, based on key information, a multi-level code sequence in which a signal level changes so as to be approximately random numbers. A level conversion section irreversibly converts the multi-level code sequence such that a converted multi-level code sequence does not constitute a mapping of the multi-level code sequence. A multi-level processing section generates a multi-level signal having a plurality of levels each corresponding to a combination between the information data and the multi-level code sequence. A modulator section modulates a multi-level signal in a predetermined modulation method and outputs a modulated signal.
摘要翻译：一种数据通信装置通过使用Y-00协议提高对秘密通信窃听的安全性。多级代码生成部基于密钥信息生成信号电平变化为多个随机数的多级代码序列。电平转换部分不可逆地转换多电平码序列，使得转换的多电平码序列不构成多电平码序列的映射。多级处理部分生成具有多个级别的多级信号，每级都对应于信息数据和多级代码序列之间的组合。调制器部分以预定的调制方式调制多电平信号并输出调制信号。

5. 发明授权

US07801300B2 Data transmitter and data receiver 有权
标题翻译：数据发射机和数据接收机
公开(公告)号：US07801300B2
公开(公告)日：2010-09-21
申请号：US11651037
申请日：2007-01-09
申请人： Masaru Fuse , Satoshi Furusawa , Tsuyoshi Ikushima , Tomokazu Sada
发明人： Masaru Fuse , Satoshi Furusawa , Tsuyoshi Ikushima , Tomokazu Sada
IPC分类号： H04N7/16 , H04L29/00 , H04L9/00 , H04L9/20
CPC分类号： H04K1/02 , H04L9/0662 , H04L2209/34
摘要： A data communication apparatus which causes the eavesdropper to take a significantly increased time to analyze a cipher text and provides high concealability is provided. A multi-level code generation section 111a generates, based on predetermined key information 11, a multi-level code sequence 12 in which a signal level changes so as to be approximately random numbers. A multi-level processing section 111b combines the multi-level code sequence 12 and information data 10, and generates a multi-level signal 13 having a plurality of levels corresponding to the combination of the multi-level code sequence 12 and the information data 10. A modulator section 112 treats the multi-level signal a predetermined modulating processing and generates a modulated signal. The multi-level code generation section 111a generates the multi-level code sequence 12 in accordance with a changed random number sequence which results from changing a bit series of a binary random number sequence generated based on the predetermined key information.
摘要翻译：提供一种数据通信装置，其使得窃听者显着增加时间来分析密文并提供高隐藏性。多级代码生成单元111a基于规定的键信息11生成信号电平变化为大致随机数的多级代码序列12。多级处理部分111b组合多级代码序列12和信息数据10，并且生成具有与多级代码序列12和信息数据10的组合相对应的多个级别的多级信号13 调制器部分112对多电平信号进行预定的调制处理，并产生调制信号。多级代码生成部111a根据改变的随机数序列生成多级代码序列12，该随机数序列是根据预定的密钥信息生成的二进制随机数序列的位序列的改变而得到的。

6. 发明申请

US20090103721A1 DATA TRANSMITTING APPARATUS, DATA RECEIVING APPARATUS AND DATA COMMUNICATION APPARATUS 失效
标题翻译：数据发送装置，数据接收装置和数据通信装置
公开(公告)号：US20090103721A1
公开(公告)日：2009-04-23
申请号：US12063003
申请日：2006-10-13
申请人： Tomokazu Sada , Masaru Fuse , Satoshi Furusawa , Tsuyoshi Ikushima
发明人： Tomokazu Sada , Masaru Fuse , Satoshi Furusawa , Tsuyoshi Ikushima
IPC分类号： H04L9/28
CPC分类号： H04K1/02 , H04L9/0656 , H04L9/0852
摘要： Provided is a data communication apparatus which is highly concealable and significantly increases time necessary for an eavesdropper to analyze cipher text. A multi-level code generation section (156a) generates, by using predetermined key information, a multi-level code sequence in which a signal level changes so as to be random numbers. The multi-level processing section (111b) combines a multi-level code sequence and information data, and generates a multi-level signal having a level corresponding to a combination of the multi-level code sequence and the information data. In the multi-level code generation section (156a), a random number sequence generation section (157) generates a binary random number sequence by using the predetermined key information. A multi-level conversion section (158) generates a multi-level code sequence from the binary random number sequence in accordance with a predetermined encoding rule.
摘要翻译：提供了高度可隐藏的数据通信设备，并且显着增加了窃听者分析密文所需的时间。多级代码生成部分（156a）通过使用预定的密钥信息生成其中信号电平改变为随机数的多级代码序列。多级处理部（111b）组合多级代码序列和信息数据，生成具有与多级代码序列和信息数据的组合对应的级别的多级信号。在多级代码生成部（156a）中，随机数序列生成部（157）通过使用规定的密钥信息生成二进制随机数序列。多级转换部分（158）根据预定的编码规则从二进制随机数序列生成多级代码序列。

7. 发明授权

US07321733B2 Split-band optical transmission system and optical transmission method used therein 失效
标题翻译：分光带光传输系统及其中使用的光传输方法
公开(公告)号：US07321733B2
公开(公告)日：2008-01-22
申请号：US10515228
申请日：2004-06-04
申请人： Tsuyoshi Ikushima , Masaru Fuse
发明人： Tsuyoshi Ikushima , Masaru Fuse
IPC分类号： H04B10/12
CPC分类号： H04L1/24 , H04J14/02 , H04J14/0298 , H04L1/0003 , H04L1/0025 , H04L25/4917 , Y02D50/10
摘要： An optical transmission system including an optical transmitting device and an optical receiving device. The optical transmitting device includes a data signal splitting section for splitting data signal information into at least two parts and generating at least two electrical signals having different center frequencies and bands, a frequency multiplexing section for performing frequency multiplexing for the at least two electrical signals, and an electrical-to-optical conversion section for converting the frequency-multiplexed signal to an optical signal and sending it to an optical transmission path. The optical receiving device includes an optical-to-electrical conversion section for converting the optical signal to a frequency-multiplexed signal, a band demultiplexing section for demultiplexing the frequency-multiplexed signal to obtain at least two electrical signals, and a data signal recovering section for recovering the data signal based on the at least two demultiplexed electrical signals.
摘要翻译：一种光传输系统，包括光发射装置和光接收装置。光发送装置包括数据信号分离部分，用于将数据信号信息分成至少两部分并产生具有不同中心频率和频带的至少两个电信号;频率复用部分，用于对至少两个电信号执行频率复用; 以及电 - 光转换部分，用于将频率复用的信号转换为光信号并将其发送到光传输路径。光接收装置包括用于将光信号转换为频率复用信号的光电转换部，用于解复用多路复用信号以获得至少两个电信号的频带解复用部分，以及数据信号恢复部分用于基于所述至少两个解复用的电信号恢复数据信号。

8. 发明授权

US08107628B2 Data transmitting apparatus and data receiving apparatus 失效
标题翻译：数据发送装置和数据接收装置
公开(公告)号：US08107628B2
公开(公告)日：2012-01-31
申请号：US12127210
申请日：2008-05-27
申请人： Tsuyoshi Ikushima , Masaru Fuse , Satoshi Furusawa , Tomokazu Sada
发明人： Tsuyoshi Ikushima , Masaru Fuse , Satoshi Furusawa , Tomokazu Sada
IPC分类号： H04L29/06
CPC分类号： H04L9/0852 , H04L9/0662 , H04L2209/08
摘要： A data communication apparatus, performing a secret communication, is provided to reduce a random number generation speed using a plurality of random number generators. The data communication apparatus includes random number generation sections generating random numbers, which are each a multi-level pseudo random number, using predetermined key information includes a multi-level signal modulation section selecting a level, from among multi-levels previously prepared, selected level corresponding to information data and a multi-level sequence, which is composed of a combination of values of the random numbers and generating a multi-level modulated signal including a noise having a predetermined noise level using the selected level. Levels of a multi-level signal are in a range of the noise level, and a signal point allocation is set such that all values which are possibly taken by each of the random numbers are allocated to the plurality of levels of the multi-level signal.
摘要翻译：提供执行秘密通信的数据通信装置，以使用多个随机数发生器来减少随机数生成速度。数据通信装置包括随机数生成部分，其生成随机数，其分别是多级伪随机数，使用预定密钥信息，包括从预先准备的多级中选择的级别中选择级别的多级信号调制部分对应于信息数据和多级序列，其由随机数的值的组合组成，并且使用所选择的电平生成包括具有预定噪声电平的噪声的多电平调制信号。多电平信号的电平处于噪声电平的范围内，并且设置信号点分配，使得每个随机数可能采用的所有值被分配给多电平信号的多个电平。

9. 发明申请

US20080063208A1 Data Transmitting Apparatus 审中-公开
标题翻译：数据传输设备
公开(公告)号：US20080063208A1
公开(公告)日：2008-03-13
申请号：US11665684
申请日：2005-11-04
申请人： Tsuyoshi Ikushima , Satoshi Furusawa , Masaru Fuse
发明人： Tsuyoshi Ikushima , Satoshi Furusawa , Masaru Fuse
IPC分类号： H04L9/08 , H04L9/28
CPC分类号： H04L25/4917 , H04K1/02 , H04L9/0852 , H04L2209/08
摘要： A data communication system is provided in which a time required for a wiretapper to decrypt an encrypted text is significantly increased so that concealment is improved. In a data transmitting apparatus (17105), a multilevel encoding part (111) switches a plurality of key information to generate a multilevel code sequence in which the average values of signal levels are different, and then combines the generated multilevel code sequence with information data to generate a multilevel signal having a level corresponding to the combination of the two signal levels. A light modulating part (125) converts the multilevel signal into a modulated signal of a predetermined modulation scheme and transmits it. In a data receiving apparatus (17205), a light demodulating part (219) demodulates the received modulated signal into the multilevel signal. A multilevel decoding part (212) switches a plurality of key information to generate a multilevel code sequence in which the average values of signal levels are different, and then identifies the multilevel signal based on this generated multilevel code sequence to regenerate the information data.
摘要翻译：提供了一种数据通信系统，其中窃听者解密加密文本所需的时间显着增加，从而改善了隐藏。在数据发送装置（17105）中，多级编码部（111）切换多个密钥信息，生成信号电平的平均值不同的多级代码序列，然后将生成的多级代码序列与信息数据以产生具有与两个信号电平的组合相对应的电平的多电平信号。光调制部分（125）将多电平信号转换为预定调制方案的调制信号并将其发送。在数据接收装置（17205）中，光解调部（219）将接收到的调制信号解调为多电平信号。多级解码部分（212）切换多个密钥信息以产生其中信号电平的平均值不同的多级代码序列，然后基于该生成的多级代码序列来识别多级信号以再生信息数据。

10. 发明申请

US20080063109A1 Data transmitting apparatus 失效
标题翻译：数据发送装置
公开(公告)号：US20080063109A1
公开(公告)日：2008-03-13
申请号：US11882250
申请日：2007-07-31
申请人： Tsuyoshi Ikushima , Satoshi Furusawa , Tomokazu Sada , Masaru Fuse , Tomoaki Ohira
发明人： Tsuyoshi Ikushima , Satoshi Furusawa , Tomokazu Sada , Masaru Fuse , Tomoaki Ohira
IPC分类号： H04L25/34
CPC分类号： H04L25/4917
摘要： A data transmitting apparatus which improves security against eavesdropping is provided for secret communication using Y-00 protocol. The multi-level code generation section 111 generates, based on key information 11, a multi-level code sequence 12 in which a signal level changes so as to be approximately random numbers. The multi-level processing section 112 generates a multi-level signal 13 having a level which corresponds to a combination between information data 10 and the multi-level code sequence 12. The error signal generation section 113 generates an error signal 21 which changes randomly. The accumulation section 114 accumulates the error signal 21, and outputs an accumulated error signal 22. The adding section 116 adds the accumulated error signal 22 to the multi-level signal 13, and outputs a variable multi-level signal 23. The modulator section 117 modulates the variable multi-level signal 23, and outputs a modulated signal 14.
摘要翻译：提供了使用Y-00协议进行秘密通信的提高针对窃听的安全性的数据发送装置。多级代码生成部111基于密钥信息11生成信号电平变化为近似随机数的多级代码序列12。多级处理部分112产生具有对应于信息数据10和多级代码序列12之间的组合的级别的多级信号13。误差信号生成部113生成随机变化的误差信号21。累加部分114累积误差信号21，并输出累积误差信号22。加法部116将积分误差信号22加到多电平信号13，并输出可变多电平信号23。调制部117对可变多电平信号23进行调制，输出调制信号14。

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