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1. 发明授权

US07180582B2 Apparatus and method for measuring characteristics of optical fibers 有权
标题翻译：光纤特性测量装置及方法
公开(公告)号：US07180582B2
公开(公告)日：2007-02-20
申请号：US10863883
申请日：2004-06-08
申请人： Tetsuo Yano , Emiko Fujiwara , Shouichi Aoki
发明人： Tetsuo Yano , Emiko Fujiwara , Shouichi Aoki
IPC分类号： G01N21/00
CPC分类号： G01M11/3181 , G01N21/23
摘要： An apparatus and method for accurate measurement of characteristics of optical fibers (distribution of polarization mode dispersion and distribution of magnitude of birefringence). Pulse light is inputted to a subject optical fiber, back scattered light of the pulse light from the subject optical fiber is detected by a photodetector to find a Stokes vector, and polarization mode dispersion in a longitudinal direction is measured. The apparatus comprises a light source unit for outputting the pulse light having at least three different angular frequencies, and an arithmetic operation unit for calculating the magnitude of linear polarization components and the magnitude of a circular polarization component of a polarization dispersion vector on the basis of the Stokes vector and thus calculating polarization mode dispersion.
摘要翻译：用于精确测量光纤特性的装置和方法（偏振模色散的分布和双折射大小分布）。脉冲光被输入到目标光纤中，由光电检测器检测来自目标光纤的脉冲光的反向散射光，以找到斯托克斯矢量，并测量纵向上的偏振模色散。该装置包括用于输出具有至少三个不同角频率的脉冲光的光源单元和用于基于以下方式计算偏振分散向量的线性偏振分量的大小和偏振分散矢量的大小的算术运算单元斯托克斯矢量，从而计算偏振模色散。

2. 发明申请

US20050018174A1 Apparatus and method for measuring characteristics of iptical fibers 有权
标题翻译：用于测量光纤特性的装置和方法
公开(公告)号：US20050018174A1
公开(公告)日：2005-01-27
申请号：US10863883
申请日：2004-06-08
申请人： Tetsuo Yano , Emiko Fujiwara , Shouichi Aoki
发明人： Tetsuo Yano , Emiko Fujiwara , Shouichi Aoki
IPC分类号： G01M11/02 , G01M11/00 , G01N21/23 , G01N21/00
CPC分类号： G01M11/3181 , G01N21/23
摘要： An apparatus and method for measuring characteristics of optical fibers that enable accurate measurement of characteristics of optical fibers (distribution of polarization mode dispersion and distribution of magnitude of birefringence) are to be realized. This invention is an improvement of an optical fiber characteristics measuring apparatus in which pulse light is inputted to a subject optical fiber, back scattered light of the pulse light from the subject optical fiber is detected by a photodetector to find a Stokes vector, and polarization mode dispersion in a longitudinal direction is measured. The apparatus comprises a light source unit for outputting the pulse light having at least three different angular frequencies, and an arithmetic operation unit for calculating the magnitude of linear polarization components and the magnitude of a circular polarization component of a polarization dispersion vector on the basis of the Stokes vector and thus calculating polarization mode dispersion.
摘要翻译：可以实现用于测量光纤特性的精确测量（偏振模色散分布和双折射大小分布）的光纤特性的装置和方法。本发明是将脉冲光输入到被摄体光纤的光纤特性测量装置的改进，由光检测器检测来自对象光纤的脉冲光的反向散射光，以找到斯托克斯矢量，并且偏振模式测量纵向的分散。该装置包括用于输出具有至少三个不同角频率的脉冲光的光源单元和用于基于以下方式计算偏振分散向量的线性偏振分量的大小和偏振分散矢量的大小的算术运算单元斯托克斯矢量，从而计算偏振模色散。

3. 发明授权

US06794857B2 Apparatus and method for measuring a phase delay characteristic 失效
标题翻译：用于测量相位延迟特性的装置和方法
公开(公告)号：US06794857B2
公开(公告)日：2004-09-21
申请号：US10235529
申请日：2002-09-05
申请人： Seiji Toyoda , Emiko Fujiwara
发明人： Seiji Toyoda , Emiko Fujiwara
IPC分类号： G01R2500
CPC分类号： G01R25/00
摘要： A phase delay characteristic measuring apparatus includes an in-phase component calculating means for outputting a correlation value between input sampling data of the input signal and the output signal and ideal sine waveform data as a baseband I signal (in-phase component), a quadrature component calculating means for outputting a correlation value between the input sampling data of the input signal and the output signal and ideal cosine waveform data as a baseband Q signal (quadrature component), a phase angle calculating means for outputting phase angles of the input signal and the output signal based on the baseband I signal and the baseband Q signal, and a phase delay calculating means for calculating an amount of phase delay of the tested device from the phase angles of the input signal and the output signal.
摘要翻译：相位延迟特性测量装置包括：同相分量计算装置，用于输出输入信号的输入采样数据和输出信号与理想正弦波形数据之间的相关值作为基带I信号（同相分量），正交分频分量计算装置，用于输出输入信号的输入采样数据和输出信号与理想余弦波形数据之间的相关值作为基带Q信号（正交分量）;相位角计算装置，用于输出输入信号的相位角和基于基带I信号和基带Q信号的输出信号，以及相位延迟计算装置，用于根据输入信号和输出信号的相位角计算被测试装置的相位延迟量。

4. 发明授权

US06342849B1 Method and apparatus for peak detection of an analog signal 失效
标题翻译：用于模拟信号峰值检测的方法和装置
公开(公告)号：US06342849B1
公开(公告)日：2002-01-29
申请号：US09537221
申请日：2000-03-29
申请人： Emiko Fujiwara
发明人： Emiko Fujiwara
IPC分类号： H03M100
CPC分类号： G01R19/04 , G01R19/2506
摘要： A peak detecting device which can efficiently detect a peak of an analog signal in a smaller error for a short time without making a sampling frequency higher. The analog signal processing apparatus (1) as the peak detecting device comprises: the frequency-dividing ratio setting device (2) for outputting the frequency-dividing ratio setting signal (2a); the frequency divider (3) for frequency-dividing the frequency of the reference clock signal (1b) by the frequency-dividing ratio which is changed by the frequency-dividing ratio setting signal (2a), to generate the sampling clock signal (3a); the A/D converter (4) for carrying out the sampling of the analog input signal (1a) at the clock timing which is synchronized with the sampling clock signal (3a); the sampling data memory (5) for memorizing the digital data (4a) which are obtained by sampling by the A/D converter (4); and the data processor (6) for reading out the digital data (4a) as the digital data (5a), to determine the peak of the digital data (5a).
摘要翻译：一种峰值检测装置，其能够在不使采样频率更高的情况下在较短时间内以较小误差有效地检测模拟信号的峰值。作为峰值检测装置的模拟信号处理装置（1）包括：分频比设定装置（2），用于输出分频比设定信号（2a）; 用于将由基准时钟信号（1b）的频率分频的分频器（3）除以由分频比设置信号（2a）改变的分频比，以产生采样时钟信号（3a） ; 用于在与采样时钟信号（3a）同步的时钟定时执行模拟输入信号（1a）的采样的A / D转换器（4）; 用于存储通过A / D转换器（4）采样获得的数字数据（4a）的采样数据存储器（5）; 以及用于读出作为数字数据（5a）的数字数据（4a）的数据处理器（6），以确定数字数据（5a）的峰值。

5. 发明授权

US5522105A Health pillow 失效
标题翻译：健康枕头
公开(公告)号：US5522105A
公开(公告)日：1996-06-04
申请号：US392165
申请日：1995-02-22
申请人： Emiko Fujiwara , Fujio Soga
发明人： Emiko Fujiwara , Fujio Soga
IPC分类号： A47C27/00 , A47G9/00 , A47G9/10
CPC分类号： A47C31/005 , A47G9/007 , Y10S5/951
摘要： A health pillow which emits the fragrance of wood and induces a pleasant mood leading to peaceful sleep. A plurality of cylindrical, hollow wood sections improve air circulation in the pillow while at the same time emitting a fragrance which lasts for a long time. Wooden sheets which include a plurality of half-cylindrical shaped pieces are fastened together to form a sheet of wooden tubes. This sheet is cut into individual tubes which are cut into pieces ranging in length from several millimeters to fifteen to sixteen millimeters, thus producing numerous small tubular pieces of wood. These small tubular pieces of wood are used to fill the interior of the pillow.
摘要翻译：一种健康的枕头，发出木材的香味，诱发愉快的心情，平静的睡眠。多个圆柱形的中空木材部分改善了枕头中的空气循环，同时发出持续很长时间的香料。包括多个半圆柱形件的木片被紧固在一起以形成一块木管。将该片切成单个管，其切割成长度为几毫米至十五至十六毫米的片，从而产生许多小管状木片。这些小管状木头用于填充枕头的内部。

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