公开(公告)号：US5711903A

公开(公告)日：1998-01-27

申请号：US698287

申请日：1996-08-14

申请人： Takeshi Yagi ,  Masato Oku ,  Takayuki Morikawa ,  Tsuguo Sato ,  Kazuaki Yoshida

发明人： Takeshi Yagi ,  Masato Oku ,  Takayuki Morikawa ,  Tsuguo Sato ,  Kazuaki Yoshida

IPC分类号： C01B33/12 ,  C03B37/012 ,  B29D11/00 ,  B27N3/00 ,  B29C59/00

CPC分类号： C01B33/126 ,  C01B33/12 ,  C03B37/0128 ,  C03B2201/02 ,  C03B2201/10 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/42

摘要： The present invention provides a method of manufacturing a porous preform for an optical fiber, including the steps of removing impure particles from silica powder while being stirred in an alkaline liquid phase, and obtaining the porous preform for an optical fiber by applying the powder forming method to the silica powder used as a main raw material. The present invention further has a method of manufacturing a porous preform for an optical fiber, including the step of preparing a forming material by adding fine particles having a particle diameter satisfying the following formula (I) to the silica powder, and obtaining the porous preform by applying the powder forming method to the forming material: ##EQU1## wherein d: diameter of fine particles, and D: diameter of silica powder.

摘要翻译： 本发明提供一种制造光纤用多孔预成型体的方法，包括以下步骤：在碱性液相中搅拌的同时从二氧化硅粉末中除去不纯的颗粒，并通过施加粉末形成方法获得光纤用多孔预成型体 以二氧化硅粉末为主要原料。 本发明还涉及一种制造光纤用多孔预成型体的方法，包括通过将具有下述通式（I）的粒径的微粒添加到二氧化硅粉末中而制备成形材料的步骤，得到多孔预成型体 通过对成形材料施加粉末形成方法：其中d：细颗粒直径，D：二氧化硅粉末的直径。

公开(公告)号：US5244485A

公开(公告)日：1993-09-14

申请号：US874179

申请日：1992-04-24

申请人： Hiroshi Hihara ,  Masato Oku ,  Takeshi Yagi ,  Noritsugu Enomoto ,  Tsuguo Sato ,  Kazuaki Yoshida ,  Takayuki Morikawa

发明人： Hiroshi Hihara ,  Masato Oku ,  Takeshi Yagi ,  Noritsugu Enomoto ,  Tsuguo Sato ,  Kazuaki Yoshida ,  Takayuki Morikawa

IPC分类号： C03B37/012

CPC分类号： C03B37/01282 ,  Y02P40/57

摘要： The method of manufacturing a silica glass preform comprises the steps of inserting a rod-like member mainly containing a ductile material, into a forming space of a mold, charging the remaining space of the forming space with a forming material containing silica glass powder or doped silica glass powder, compressing the mold charged with the forming material from outside such as to form a porous glass body of the forming material around the rod-like member, removing the rod-like member from the porous glass body, inserting a glass rod into the hole formed after removal of the rod-like member, purifying said porous glass body in which the glass rod is inserted, and consolidating said porous glass body purified in the above purifying step.

公开(公告)号：US5352259A

公开(公告)日：1994-10-04

申请号：US10670

申请日：1993-01-28

申请人： Masato Oku ,  Noritsugu Enomoto ,  Hiroshi Hihara ,  Tsuguo Sato ,  Kazuaki Yoshida ,  Takayuki Morikawa ,  Takeshi Yagi

发明人： Masato Oku ,  Noritsugu Enomoto ,  Hiroshi Hihara ,  Tsuguo Sato ,  Kazuaki Yoshida ,  Takayuki Morikawa ,  Takeshi Yagi

IPC分类号： C03B37/012 ,  C03B19/09

CPC分类号： C03B37/01282

摘要： The present invention provides a method of manufacturing an optical fiber preform having the steps of disposing a rod member made of a silica-based material within a cavity of a mold, followed by loading a molding material within the mold cavity, and applying pressure to the mold from the outside to form a porous layer on the surface of the rod member and, thus, to obtain a porous preform, wherein at least one end portion of the rod member extends outside the mold cavity in the step of applying pressure to the mold. The particular method permits manufacturing a high quality porous preform free from splits or cracks, making it possible to obtain a high quality optical fiber preform free from residual bubbles.

摘要翻译： 本发明提供一种制造光纤预制棒的方法，该方法具有以下步骤：将由二氧化硅基材料制成的杆件设置在模具的空腔内，然后将模制材料装入模腔内，并向 从外部模制以在杆构件的表面上形成多孔层，从而获得多孔预成型件，其中杆构件的至少一个端部在向模具施加压力的步骤中延伸到模腔外部 。 特定的方法允许制造高质量的多孔预制件，不存在裂缝或裂缝，从而可以获得没有残留气泡的高品质光纤预制件。

公开(公告)号：US5185020A

公开(公告)日：1993-02-09

申请号：US749900

申请日：1991-08-26

申请人： Tsuguo Satoh ,  Takayuki Morikawa ,  Hiroshi Hihara ,  Takeshi Yagi ,  Kazuaki Yoshida

发明人： Tsuguo Satoh ,  Takayuki Morikawa ,  Hiroshi Hihara ,  Takeshi Yagi ,  Kazuaki Yoshida

IPC分类号： C03B37/012 ,  C03B37/014 ,  C03B37/016

CPC分类号： C03B37/01282 ,  C03B37/01446 ,  C03B37/016 ,  Y02P40/57 ,  Y10S65/901

摘要： A silica-based glass rod is inserted into a space portion of a mold. Then, a slurry, which is obtained by dispersing a silica glass powder material in pure water, is poured into a molding space between the glass rod and the inner surface of the mold, whereby a porous glass shaped body is formed around the glass rod. Drying this shaped body results in a silica glass base material which includes the glass rod and the porous glass shaped body surrounding the same.

公开(公告)号：US5169421A

公开(公告)日：1992-12-08

申请号：US757902

申请日：1991-09-11

申请人： Takeshi Yagi ,  Hiroshi Hihara ,  Tsuguo Satoh ,  Takayuki Morikawa ,  Kazuaki Yoshida

发明人： Takeshi Yagi ,  Hiroshi Hihara ,  Tsuguo Satoh ,  Takayuki Morikawa ,  Kazuaki Yoshida

IPC分类号： B29C47/00 ,  C03B17/02 ,  C03B37/012

CPC分类号： C03B37/01288 ,  C03B17/025 ,  B29C47/00 ,  B29C47/0014 ,  Y02P40/57

摘要： An extruding apparatus having at least two independent inlet ports, one outlet port communicating with the inlet ports, and at least two passages connecting the inlet ports with the outlet port, in which a section of a joint portion of the passages has a central portion and an outer peripheral portion which are concentrically arranged, is prepared. A core material is supplied to one of the passages communicating with the central portion of the joint portion from a corresponding inlet port, and a cladding material is supplied to the other passage communicating with the outer peripheral portion from a corresponding inlet port, thereby causing the two materials to join each other at the joint portion. An integral shaped body having a portion corresponding to a core at its central portion and a portion corresponding to a cladding around the central portion is extruded from the outlet port. Water and a binder and other impurities are removed from the shaped body, and the resultant body is consolidated.

公开(公告)号：US5615295A

公开(公告)日：1997-03-25

申请号：US527559

申请日：1995-09-13

申请人： Kazuaki Yoshida ,  Takayuki Morikawa ,  Takeshi Yagi

发明人： Kazuaki Yoshida ,  Takayuki Morikawa ,  Takeshi Yagi

IPC分类号： C03B37/027 ,  C03B37/15 ,  G02B6/02 ,  G02B6/255 ,  G02B6/36

CPC分类号： G02B6/2552 ,  C03B37/027 ,  C03B37/15 ,  G02B6/02 ,  C03B2203/18 ,  C03B2205/10

摘要： A process for the production of an optical fiber a core which is elliptical in cross-section at one end and circular at the other end and which has little transmission loss and less of a reduction in the difference in indexes of refraction between the core and cladding, which consists of heating an optical fiber (1) having a core (c) having a uniform cross-sectional area in the longitudinal direction and a cladding (2) formed with at least one through hole (4A) along the longitudinal direction of the core while successively changing the heating temperature along the longitudinal direction of the optical fiber so as to continuously change the shape of the through hole, continuously change the cross-sectional shape of the core along the longitudinal direction of the optical fiber, and thereby make the cross-sectional shape of the core at one end of the optical fiber and the cross-sectional shape of the core at the other end different.

摘要翻译： 一种用于生产光纤的方法，该芯在一端具有椭圆形截面并且在另一端呈圆形，并且具有很小的传输损耗和较少的芯和包层之间的折射率差的减小 其特征在于，加热具有纵向均匀截面面积的芯（c）的光纤（1）和沿着所述纵向方向形成有至少一个通孔（4A）的包层（2） 在沿着光纤的长度方向连续地改变加热温度的同时，连续地改变通孔的形状，沿着光纤的长度方向连续地改变芯的横截面形状，从而使 在光纤的一端的芯的横截面形状和另一端的芯的横截面形状不同。

公开(公告)号：US5907797A

公开(公告)日：1999-05-25

申请号：US821768

申请日：1997-03-20

申请人： Masami Hanatatsu ,  Chihiro Tagawa ,  Takayuki Morikawa

发明人： Masami Hanatatsu ,  Chihiro Tagawa ,  Takayuki Morikawa

IPC分类号： H04B7/26 ,  H04B17/00 ,  H04B17/10 ,  H04B17/15 ,  H04Q7/34 ,  H04W24/00 ,  H04W24/06 ,  H04W88/02

CPC分类号： H04B17/00 ,  H04B17/104 ,  H04B17/16

摘要： A radio communication analyzer tests the signal characteristics of a carrier, as a target signal to be tested, which has undergone quadrature modulation using a digital data signal output from a radio unit to be tested. A quadrature demodulation section performs quadrature demodulation of the target signal and outputs a baseband signal. A storage section stores the waveform data of the baseband signal. A clock synchronous detection section detects clock synchronization information contained in the target signal based on the waveform data. A demodulation section sequentially reads out the waveform data and obtains demodulated digital data in accordance with the clock synchronization information. A burst synchronous detection section generates burst synchronization information representing a burst start position of the target signal on the basis of the demodulated digital data or the waveform data.

摘要翻译： 无线电通信分析器测试作为要测试的目标信号的载波的信号特性，其使用从要测试的无线电单元输出的数字数据信号进行正交调制。 正交解调部对目标信号进行正交解调，输出基带信号。 存储部存储基带信号的波形数据。 时钟同步检测部分基于波形数据检测包含在目标信号中的时钟同步信息。 解调部分依次读出波形数据并根据时钟同步信息获得解调的数字数据。 突发同步检测部分根据解调的数字数据或波形数据产生表示目标信号的突发起始位置的突发同步信息。

公开(公告)号：US08160810B2

公开(公告)日：2012-04-17

申请号：US12341397

申请日：2008-12-22

申请人： Takayuki Morikawa ,  Toshiyuki Yamamoto ,  Tomio Miwa ,  Akinori Satou ,  Enjian Yao ,  Yasuhiro Sugisaki

发明人： Takayuki Morikawa ,  Toshiyuki Yamamoto ,  Tomio Miwa ,  Akinori Satou ,  Enjian Yao ,  Yasuhiro Sugisaki

IPC分类号： G01C21/36

CPC分类号： G01C21/3469 ,  G01C21/3492

摘要： The route search system of the present invention receives the provision request of the information about route search from a route search terminal. The information included in the provision request from a route search terminal is acquired, calculation processing of the environmental load value of the relevant vehicle and the environmental load value of other vehicle by which it is generated with movement of a relevant vehicle from the acquired information is carried out using an environmental load calculation unit.

摘要翻译： 本发明的路由搜索系统从路由搜索终端接收关于路由搜索的信息的提供请求。 获取来自路径搜索终端的提供请求中包含的信息，相关车辆的环境负荷值的计算处理和相关车辆的运动产生的其他车辆的环境负荷值根据所获取的信息， 使用环境负荷计算单元进行。

公开(公告)号：US07263355B2

公开(公告)日：2007-08-28

申请号：US10866298

申请日：2004-06-10

申请人： Takayuki Morikawa ,  Tsuyoshi Doi ,  Osamu Miyashita

发明人： Takayuki Morikawa ,  Tsuyoshi Doi ,  Osamu Miyashita

IPC分类号： H04B17/00

CPC分类号： H04W24/00

摘要： A test apparatus main body mounted in a single housing has a connection unit, a common bus, terminal control units, measurement units, and a total control unit. The connection unit can connect at least two terminals of identical or different type of communication systems. The terminal control units output test signals including signals that respectively control the terminals which can be connected to the connection unit based on predetermined test programs according to the type of communication systems, and measurement instructions, which are supplied via the common bus. The second measurement units perform measurements designated by the measurement instructions upon reception of response signals which are output from the terminals in response to the test signals from the terminal control units. The total control unit supplies, in advance, the predetermined test programs according to the type of communication systems and outputs the measurement instructions at predetermined timings to the terminal control units.

摘要翻译： 安装在单个壳体中的测试装置主体具有连接单元，公共总线，终端控制单元，测量单元和总控制单元。 连接单元可以连接相同或不同类型的通信系统的至少两个终端。 终端控制单元输出测试信号，包括根据通信系统的类型和经由公共总线提供的测量指令，基于预定的测试程序分别控制可连接到连接单元的终端的信号。 第二测量单元响应于来自终端控制单元的测试信号，在接收到从终端输出的响应信号时，执行由测量指令指定的测量。 总控制单元预先根据通信系统的类型提供预定的测试程序，并将预定定时的测量指令输出到终端控制单元。

公开(公告)号：US07069005B2

公开(公告)日：2006-06-27

申请号：US10381955

申请日：2002-07-05

申请人： Takayuki Morikawa ,  Katsuhisa Iiyoshi ,  Yuji Kanno ,  Hideo Zuinen

发明人： Takayuki Morikawa ,  Katsuhisa Iiyoshi ,  Yuji Kanno ,  Hideo Zuinen

IPC分类号： H04Q7/20

CPC分类号： H04J13/00 ,  H04J3/14

摘要： A measuring section measures a digital multiplex signal divided into slot units, as a signal to be measured. A display control section displays, on a screen, a measured waveform of the signal. An analyzing section analyzes, in the slot units, information relating to the measured waveform of the signal. A storage section stores the information relating to the measured waveform of the signal which is analyzed in the slot units, as analyzed information of the slot unit. A marker display control section displays a slot marker to designate an arbitrary slot, in correspondence with the measured waveform of the signal which is displayed on the screen. A slot information display control section reads, from the storage section, the analyzed information of the slot unit corresponding to the slot designated by the slot marker displayed on the screen, and displays the analyzed information of the slot unit in correspondence with the slot marker.

摘要翻译： 测量部分测量被划分为时隙单元的数字多路复用信号作为待测信号。 显示控制部分在屏幕上显示信号的测量波形。 分析部分在时隙单元中分析与信号的测量波形有关的信息。 存储部分将与时隙单元中分析的信号的测量波形相关的信息作为时隙单元的分析信息进行存储。 标记显示控制部分与显示在屏幕上的信号的测量波形相对应地显示用于指定任意时隙的时隙标记。 时隙信息显示控制部分从存储部分读取与由屏幕上显示的时隙标记指定的时隙相对应的时隙单元的分析信息，并且与时隙标记对应地显示时隙单元的分析信息。