公开(公告)号：US20070212077A1

公开(公告)日：2007-09-13

申请号：US11587012

申请日：2005-06-10

申请人： Toshihiko Yasue ,  Toru Shiozaki ,  Masaru Fuse

发明人： Toshihiko Yasue ,  Toru Shiozaki ,  Masaru Fuse

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04B10/5561 ,  H04B1/7163 ,  H04B10/505 ,  H04B10/508 ,  H04B10/60 ,  H04J14/02

摘要： The ultra wideband communication system comprises: a pulse generation section for generating a pulse signal based on a data signal; a first optical phase modulation section for performing optical phase modulation in accordance with the pulse signal, and outputting a resultant signal as an optical pulse signal; an optical transmission path for propagating the optical pulse signal; a template generation section for outputting a template signal; a second optical phase modulation section for performing optical phase modulation on the optical pulse signal in accordance with the template signal, and outputting a resultant signal as an optical phase demodulation signal; an optical phase intensity conversion section for converting information about an optical phase of the optical phase demodulation signal into information about an optical intensity thereof, and outputting a resultant signal as an optical correlation signal; an optical-electrical conversion section for performing optical-electrical conversion on the optical correlation signal, and outputting a resultant signal as a correlation signal; and a signal identification section for identifying the correlation signal outputted from the optical-electrical conversion section, thereby detecting the data signal.

摘要翻译： 超宽带通信系统包括：脉冲发生部分，用于基于数据信号产生脉冲信号; 第一光相位调制部分，用于根据脉冲信号进行光相位调制，并输出结果信号作为光脉冲信号; 用于传播光脉冲信号的光传输路径; 模板生成部，其输出模板信号; 第二光相位调制部分，用于根据模板信号对光脉冲信号进行光相位调制，并输出合成信号作为光相位解调信号; 光相位强度转换部分，用于将关于光相位解调信号的光相位的信息转换成关于其光强度的信息，并输出所得信号作为光相关信号; 光电转换部，用于对所述光学相关信号进行光电转换，并输出合成信号作为相关信号; 以及信号识别部分，用于识别从光电转换部分输出的相关信号，从而检测数据信号。

公开(公告)号：US06891995B2

公开(公告)日：2005-05-10

申请号：US10373699

申请日：2003-02-27

申请人： Tsuyoshi Ikushima ,  Masaru Fuse ,  Toshihiko Yasue

发明人： Tsuyoshi Ikushima ,  Masaru Fuse ,  Toshihiko Yasue

IPC分类号： H04B10/02 ,  H04B10/08 ,  H04J14/02 ,  G02B6/28 ,  H04J14/00

CPC分类号： H04B10/00 ,  H04B2210/078 ,  H04J14/0221

摘要： A first transmitting section frequency-multiplexes a data signal and a monitor signal, and then converts the resultant signal to an optical signal for output. A first receiving section converts the optical signal transmitted via a first optical transmission path and a wavelength demultiplexer into an electrical signal, and then extracts the monitor signal. A difference detector compares a monitor signal level with a predetermined reference level, and then outputs wavelength information to a second optical transmission path. Based on the wavelength information transmitted via the second optical transmission path, a first wavelength controller adjusts the wavelength of the optical signal for stabilization at a predetermined wavelength. Thus, it is possible to achieve a wavelength division multiplex transmission system capable of controlling the wavelength of the optical signal at low cost.

摘要翻译： 第一发送部分对数据信号和监视信号进行频率复用，然后将得到的信号转换成光信号进行输出。 第一接收部分将经由第一光传输路径发送的光信号和波分解复用器转换为电信号，然后提取监视信号。 差分检测器将监视信号电平与预定参考电平进行比较，然后将波长信息输出到第二光传输路径。 基于经由第二光传输路径传输的波长信息，第一波长控制器调整光信号的波长以在预定波长下稳定。 因此，可以实现能够以低成本控制光信号的波长的波分复用传输系统。

公开(公告)号：US06834135B2

公开(公告)日：2004-12-21

申请号：US10723636

申请日：2003-11-26

申请人： Toshihiko Yasue ,  Masaru Fuse

发明人： Toshihiko Yasue ,  Masaru Fuse

IPC分类号： G02B626

CPC分类号： H04Q11/0005 ,  H04Q2011/0039 ,  H04Q2011/0077

摘要： An optical switching system that switches the output port of an optical signal as indicated by address information (a label) that is contained in optical data packets constituting the optical signal. The optical switching system reads the address information by detecting the electric power level of a label signal that has been subjected to an optical angular modulation, passed through an optical filter and been subjected to an optical detection.

摘要翻译： 如由包含在构成光信号的光数据分组中的地址信息（标号）所示，切换光信号的输出端口的光切换系统。 光开关系统通过检测经过光角度调制的标签信号的电功率电平，通过滤光器并进行光学检测来读取地址信息。

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。

公开(公告)号：US07035551B2

公开(公告)日：2006-04-25

申请号：US10378925

申请日：2003-03-05

申请人： Toru Shiozaki ,  Masaru Fuse

发明人： Toru Shiozaki ,  Masaru Fuse

IPC分类号： H04B10/04

CPC分类号： H04B10/505

摘要： A data unit 1010 outputs an information signal to be transmitted in the form of optical packets, as well as wavelength information representing a wavelength of each optical packet. A first modulating signal processing unit 1051 receives an information signal, and inserts an electric signal (“dummy signal”) in any no-data period during which the information signal is absent, and outputs the resultant signal as a modulating signal. The dummy signal has the same amplitude as that of the information signal. A wavelength information processing unit 1021 outputs a wavelength controlling current corresponding to the wavelength information, and in any no-data period, outputs a wavelength controlling current corresponding to a wavelength which is different from the wavelengths represented by the wavelength information. A wavelength-tunable light source 1030 outputs light of a wavelength corresponding to the wavelength controlling current. An optical modulation unit 1040 modulates the light outputted from the wavelength-tunable light source 1030 with the modulating signal, and outputs the modulated signal as optical packets. As a result, an optical surge is prevented from occurring at the time of amplifying intermittently generated optical packets.

公开(公告)号：US07236701B2

公开(公告)日：2007-06-26

申请号：US10648428

申请日：2003-08-27

申请人： Toshihiko Yasue ,  Hiroyuki Sasai ,  Masaru Fuse

发明人： Toshihiko Yasue ,  Hiroyuki Sasai ,  Masaru Fuse

IPC分类号： H04J4/00 ,  H04J14/00

CPC分类号： H04B10/5059 ,  H04B10/5057 ,  H04B10/58 ,  H04J14/0298 ,  H04L5/0005 ,  H04L5/0037 ,  H04L5/0046 ,  H04L5/006

摘要： The present invention provides a low-cost optical transmission system using a plurality of subscriber lines which is capable of efficiently utilizing an optical transmission path. A communication status observing section 116 in a transmitting device 1 classifies subscribers into a plurality of groups based on a communication status at each subscriber end, and outputs constellation level information and level information which are different for each group. For each constant cycle, a modulation control section 117 and a gain control section 118 respectively set a QAM constellation level and a signal level which are different for each group and used in a basic modulating section 103.

摘要翻译： 本发明提供一种使用多个用户线路的低成本光传输系统，其能够有效地利用光传输路径。 发送设备1中的通信状态观察部分116基于每个用户端的通信状态将用户分为多个组，并且输出对于每个组不同的星座级别信息和级别信息。 对于每个恒定周期，调制控制部分117和增益控制部分118分别设置在基本调制部分103中用于每个组并且用于基本调制部分103的QAM星座电平和信号电平。

公开(公告)号：US20050265730A1

公开(公告)日：2005-12-01

申请号：US10524675

申请日：2004-06-11

申请人： Toshihiko Yasue ,  Masaru Fuse

发明人： Toshihiko Yasue ,  Masaru Fuse

IPC分类号： H04B10/155 ,  H04J14/02 ,  H04L27/26 ,  H04B10/04

CPC分类号： H04B10/564 ,  H04B10/503 ,  H04J14/0298 ,  H04L27/2626

摘要： In a transmitter (11), a peak detection section (104) detects a peak factor of a frequency division multiplexed signal which is output from a frequency division multiplex section (103). A spurious calculation section (105) instructs a gain adjustment section (106) to adjust the signal level of the frequency division multiplexed signal so that the level of spurious components (e.g., adjacent channel leakage power ratio (ACLR)) is equal to or less than a predetermined level, based on the peak factor.

摘要翻译： 在发送器（11）中，峰值检测部（104）检测从频分复用部（103）输出的频分复用信号的峰值因数。 伪计算部（105）指示增益调整部（106）调整频分复用信号的信号电平，使得杂散分量的电平（例如相邻信道泄漏功率比（ACLR））等于或小于 基于峰值因子而不是预定水平。

公开(公告)号：US06437908B1

公开(公告)日：2002-08-20

申请号：US09773613

申请日：2001-02-02

申请人： Toru Shiozaki ,  Masaru Fuse

发明人： Toru Shiozaki ,  Masaru Fuse

IPC分类号： H04B1012

摘要： An optical brancher 110 branches an input optical signal into two. An optical detector 120 converts one optical signal branched by t e optical brancher 110 into an electrical signal. A first controller 122 generates a control electrical signal having a waveform obtained by inverting the envelope of the electrical signal. Based on the control electrical signal, an optical signal generator 124 produces a dummy optical signal having a waveform &lgr;d and an amplitude &agr;/2. The other signal branched by the optical brancher 110 is delayed by a delay unit 112 for a predetermined time, and then multiplexed by an optical multiplexer 114 with the dummy optical signal from the optical signal generator 124. An optical amplifier 116 amplifies a multiplexed optical signal. An optical filter 118 separates an optical signal of a wavelength &lgr;1 from the amplified optical signal. Thus optical signal amplification can be carried out without optical surges.

公开(公告)号：US20100266124A1

公开(公告)日：2010-10-21

申请号：US12814871

申请日：2010-06-14

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： H04L9/00

CPC分类号： H04L9/088 ,  H04L9/12 ,  H04L2209/08

摘要： A data communication apparatus wherein the stealthiness has been 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 like a random number, 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 second predetermined initial value (key information) that is received.

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，增强了隐身性。 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，生成其电平基本像随机数变化的多值信号，并将多值信号转换成预定调制信号 传输格式。 数据接收装置解调调制信号以输出多值信号，然后从多值信号再生信息数据和接收到的第二预定初始值（密钥信息）。

公开(公告)号：US07424222B2

公开(公告)日：2008-09-09

申请号：US10542652

申请日：2004-06-29

申请人： Toru Shiozaki ,  Masaru Fuse

发明人： Toru Shiozaki ,  Masaru Fuse

IPC分类号： H04J14/00 ,  H04B10/00

CPC分类号： H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0015 ,  H04Q2011/0039 ,  H04Q2011/0041

摘要： An optical packet exchanger is provided which prevents a transmittable capacity of an information signal from decreasing, and which facilitates the extracting an address signal even if a modulation speed for the information signal becomes high. An optical modulation section (102) outputs an optical packet obtained by subjecting output light from a light source (101) to an intensity modulation using an information signal and a phase modulation using an address signal corresponding to a transmission destination for the information signal. An optical splitter section (301) splits the optical packet into two optical packets. An address reading section (302) reads the address signal from the phase of one of the optical packets output from the optical splitter section (301). Based on the address signal output from the address reading section (302), a path switching section (303) determines an output port for the other optical packet output from the optical splitter section (301).

摘要翻译： 提供了一种防止信息信号的可发送容量减小的光分组交换机，即使信息信号的调制速度变高，也有助于提取地址信号。 光调制部分（102）通过使用信息信号和使用与信息信号的发送目的地相对应的地址信号的相位调制来输出通过使来自光源（101）的输出光进行强度调制而获得的光学分组。 光分路器部分（301）将光分组分成两个光分组。 地址读取部（302）从光分路部（301）输出的光分组的相位之一读出地址信号。 基于从地址读取部（302）输出的地址信号，路径切换部（303）确定从分光器部（301）输出的另一光分组的输出端口。