公开(公告)号：US07400830B2

公开(公告)日：2008-07-15

申请号：US10806330

申请日：2004-03-23

申请人： Kenichi Torii ,  Takao Naito ,  Hiroshi Nakamoto ,  Toru Katagiri

发明人： Kenichi Torii ,  Takao Naito ,  Hiroshi Nakamoto ,  Toru Katagiri

IPC分类号： H04B10/08

CPC分类号： H04B10/07953

摘要： The present invention has an object to provide a technology for monitoring the quality of a WDM signal light, capable of quickly and accurately judging an occurrence of quality deterioration of signal light and a deterioration factor thereof. To this end, according to a quality monitoring apparatus of WDM signal light of the present invention, a part of the WDM signal light being propagated through an optical transmission path is branched as a monitor light, a signal light of one wavelength contained in the monitor light is selected as a channel to be measured. Then, the frequency of occurrences of bit error for the channel to be measured is repeatedly measured for a plurality of times, and whether or not the signal quality is deteriorated is judged, together with the deterioration factor based on the measurement results, and a control signal light for adjusting the signal light power according to the judgment result is transmitted to the optical transmission path, to achieve the improvement of a characteristic of the WDM signal light.

摘要翻译： 本发明的目的是提供一种用于监视WDM信号光的质量的技术，其能够快速且准确地判断信号光的质量劣化的发生及其劣化因素。 为此，根据本发明的WDM信号光的质量监视装置，通过光传输路径传播的WDM信号光的一部分被分支为监视光，监视器中包含一个波长的信号光 选择光作为待测量的通道。 然后，重复地测量要测量的通道的位错误的发生频率，并且判断信号质量是否劣化，以及基于测量结果的劣化因子以及控制 将根据判断结果调整信号光功率的信号光发送到光传输路径，以实现WDM信号光的特性的提高。

公开(公告)号：US20080138252A1

公开(公告)日：2008-06-12

申请号：US11597756

申请日：2006-03-17

申请人： Masaaki Sasaki ,  Hirofumi Takahashi ,  Kouji Maeba ,  Takao Naito ,  Kouichirou Terada ,  Takashi Yamaguchi ,  Takuya Saeki

发明人： Masaaki Sasaki ,  Hirofumi Takahashi ,  Kouji Maeba ,  Takao Naito ,  Kouichirou Terada ,  Takashi Yamaguchi ,  Takuya Saeki

IPC分类号： B01J19/00

CPC分类号： C01B7/0725 ,  B01D53/18 ,  B01D53/68 ,  B01D2251/304 ,  B01D2251/306 ,  B01D2257/2045 ,  C01B7/04 ,  C07C263/10 ,  C07C265/14

摘要： A polyisocyanate production system is provided that can stably produce chlorine from hydrogen chloride produced secondarily while reacting stably between carbonyl chloride and polyamine and can perform an effective treatment of the hydrochloric gas produced secondarily. A hydrochloric gas control unit 32 controls a flow-rate control valve 23 to keep constant an amount of hydrogen chloride supplied from a hydrogen chloride purifying tank 4 to a hydrogen chloride oxidation reactor 6 via a second hydrochloric-gas connection line 11 to be constant, and also controls a pressure control valve 22 based on an inner pressure of the hydrogen chloride purifying tank 4 input from a pressure sensor 25 to discharge the hydrochloric gas from the hydrogen chloride purifying tank 4 to the hydrogen chloride absorbing column 5 via a first hydrochloric-gas connection line 10, so as to keep an inner pressure of the hydrogen chloride purifying tank 4 to be constant.

摘要翻译： 提供了一种多异氰酸酯生产系统，其能够在氯化碳和多胺之间稳定反应的同时使氯化氢稳定地产生氯，同时可以对二次生成的盐酸进行有效的处理。 盐酸气体控制单元32控制流量控制阀23，使得从氯化氢净化槽4经由第二盐酸气体连接管线11将氯化氢供给到氯化氢氧化反应器6的量恒定， 并且还基于从压力传感器25输入的氯化氢净化槽4的内部压力来控制压力控制阀22，以通过第一盐酸盐排出氯化氢净化槽4的氯化氢气体到氯化氢吸收塔5。 气体连接管线10，以使氯化氢净化槽4的内部压力保持恒定。

公开(公告)号：US20070166043A1

公开(公告)日：2007-07-19

申请号：US11620144

申请日：2007-01-05

申请人： Martin Bouda ,  Takao Naito

发明人： Martin Bouda ,  Takao Naito

IPC分类号： H04B10/12

CPC分类号： H04J14/0226 ,  H04B10/66 ,  H04J3/0682 ,  H04J14/0227 ,  H04J14/0232 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0289 ,  H04J14/0297 ,  H04J14/0298 ,  H04Q11/0067 ,  H04Q11/0071 ,  H04Q2011/0069

摘要： A method is provided for increasing downstream bandwidth in an optical network that includes providing a downstream terminal comprising a digital output path and an analog output path. The method also includes receiving a signal comprising at least one wavelength at the downstream terminal. The method further includes selectively processing the signal at the downstream terminal. The signal is selectively processed at the downstream terminal by processing the signal on the analog output path if the signal comprises analog video data and processing the signal on the digital output path if the signal comprises data to be converted to a digital bit stream.

摘要翻译： 提供了一种用于增加光网络中的下行带宽的方法，其包括提供包括数字输出路径和模拟输出路径的下游终端。 该方法还包括在下游终端接收包括至少一个波长的信号。 该方法还包括在下游终端处选择性地处理该信号。 如果信号包括模拟视频数据并在数字输出路径上处理信号，如果信号包括要转换为数字位流的数据，则通过处理模拟输出路径上的信号，在下游端口选择性地处理该信号。

公开(公告)号：US20060039703A1

公开(公告)日：2006-02-23

申请号：US10995179

申请日：2004-11-24

申请人： Toru Katagiri ,  Takao Naito

发明人： Toru Katagiri ,  Takao Naito

IPC分类号： H04B10/12

CPC分类号： H04B10/25133

摘要： The objective of the present invention is to realize a chromatic dispersion compensation method which does not depend on a wavelength path in a photonic network to which a HUB node is applied and its monitoring control. In order to achieve this purpose, the present invention controls a plurality of variable chromatic dispersion compensators arbitrarily disposed in the photonic network based on the measured results of a plurality of chromatic dispersion monitors arbitrarily disposed in the photonic network and wavelength path information kept by the network management system which manages the entire photonic network. Here, the variable chromatic dispersion compensator within the network that should be controlled and the chromatic dispersion compensated quantity thereof are determined based on the measured results of the chromatic dispersion monitor and the wavelength path information kept by NMS.

公开(公告)号：US20060029391A1

公开(公告)日：2006-02-09

申请号：US11038281

申请日：2005-01-21

申请人： Masahiro Yuki ,  Toru Katagiri ,  Takao Naito

发明人： Masahiro Yuki ,  Toru Katagiri ,  Takao Naito

IPC分类号： H04J14/00

CPC分类号： H04J14/0227 ,  H04J14/0221 ,  H04J14/0241 ,  H04J14/0284

摘要： An optical network system enabling confirmation of connection and tracking of wavelength paths at a high speed and a low cost without introducing any special hardware by having a wavelength path monitoring unit in an NMS give temporary change of optical power through a change generating unit to an optical signal S from an optical transmitting/receiving node, by having a change detecting unit confirm that this change of optical power has propagated through an optical transmission line and appeared at each node on the way, and confirming connections and monitoring the wavelength path while confirming the presence of the change.

摘要翻译： 通过在NMS中具有波长路径监视单元，能够以高速和低成本确认波长路径的连接和跟踪而不引入任何特殊硬件的光网络系统通过改变生成单元将光功率暂时改变为光 来自光发送/接收节点的信号S通过使变化检测单元确认光功率的这种变化已经通过光传输线传播并出现在路径上的每个节点处，并确认连接并监测波长路径，同时确认 存在变化。

公开(公告)号：US06882466B1

公开(公告)日：2005-04-19

申请号：US09634912

申请日：2000-08-09

申请人： Naomasa Shimojoh ,  Takao Naito

发明人： Naomasa Shimojoh ,  Takao Naito

IPC分类号： H01S3/10 ,  G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/23 ,  H01S3/30 ,  H04B10/07 ,  H04B10/2525 ,  H04B10/29 ,  H04B10/296 ,  H04J14/00 ,  H04J14/02 ,  H01S3/00

CPC分类号： H04B10/2931 ,  H01S3/06758 ,  H01S3/094042 ,  H01S3/1608 ,  H01S3/2375 ,  H01S3/2383 ,  H01S3/302 ,  H04B10/2916 ,  H04B2210/258

摘要： An optical amplifier is provided for performing amplification of optical signals of two wavelength bands, where deterioration in the optical SN ratio relative to one wavelength band is reduced, with a simple construction which can deal with restrictions on installation space, power consumption and the like. To this end, the present optical amplifier has a C/L band optical amplifying section for amplifying respective optical signals of a C band and an L band, a demultiplexer for demultiplexing output light from the C/L band optical amplifying section into the C band and the L band, an L band optical amplifying section for amplifying L band optical signals which have been demultiplexed by the demultiplexer, and a multiplexer for multiplexing the C band optical signals which have been demultiplexed by the demultiplexer and the L band optical signals which have been amplified by the L band optical amplifying section. The construction is such that a part of excitation light of a 1480 nm band used in the C/L band optical amplifying section is supplied via an input terminal to a Raman amplification producing medium of a transmission path, and Raman amplified L band optical signals are input to the C/L band optical amplifying section.

摘要翻译： 提供一种光放大器，用于执行两个波长带的光信号的放大，其中相对于一个波长带的光SN比的劣化被减少，具有可以解决对安装空间，功耗等的限制的简单结构。 为此，本光放大器具有用于放大C波段和L波段的各个光信号的C / L波段光放大部分，用于将来自C / L波段光放大部分的输出光解复用为C波段的解复用器 L波段，用于放大由解复用器解复用的L波段光信号的L波段光放大部分，以及多路复用器，用于多路复用已由解复用器解复用的C波段光信号和L波段光信号， 被L波段光放大部分放大。 该结构使得在C / L频带光放大部分中使用的1480nm波段的激发光的一部分经由输入端子被提供给传输路径的拉曼放大产生介质，并且拉曼放大的L波段光信号是 输入到C / L频带光放大部分。

公开(公告)号：US06814804B2

公开(公告)日：2004-11-09

申请号：US10119940

申请日：2002-04-11

申请人： Hiroaki Onishi ,  Shoji Sato ,  Takao Naito ,  Takaaki Higashida ,  Akira Kabeshita

发明人： Hiroaki Onishi ,  Shoji Sato ,  Takao Naito ,  Takaaki Higashida ,  Akira Kabeshita

IPC分类号： B05C1102

CPC分类号： H05K3/1233 ,  B41F15/42 ,  H05K2203/0139

摘要： A filling squeegee and a scraping squeegee are provided in a printing apparatus. The filling squeegee is moved without contacting a surface of a mask in order to fill a solder paste into openings of the mask. Unnecessary solder paste on the surface of the mask is scraped by the scraping squeegee. The solder paste is prevented from being improperly filled in or scraped from the openings even if a speed of the squeegee is increased, so that the solder paste can be printed stably on circuit board.

公开(公告)号：US06630517B2

公开(公告)日：2003-10-07

申请号：US09355338

申请日：1999-10-07

申请人： Satoshi Nishida ,  Osamu Kato ,  Yoshiyuki Nagase ,  Ryuichi Fukuzato ,  Masahiro Yamagata ,  Katsuhisa Kodama ,  Terukazu Matsuda ,  Shigetoshi Suzuki ,  Takao Naito

发明人： Satoshi Nishida ,  Osamu Kato ,  Yoshiyuki Nagase ,  Ryuichi Fukuzato ,  Masahiro Yamagata ,  Katsuhisa Kodama ,  Terukazu Matsuda ,  Shigetoshi Suzuki ,  Takao Naito

IPC分类号： C08J1104

CPC分类号： C08J11/14 ,  C07C209/62 ,  C08J2375/00 ,  C08J2375/04 ,  Y02W30/704 ,  C07C211/50

摘要： A process for hydrolyzing and recycling polyurethanes as target compounds to be hydrolyzed into raw materials or derivatives thereof for the target compounds, comprising bringing pressurized water in a liquid state at a temperature of 190 to 370° C. into contact with the target compounds in a reactor to hydrolyze the target compound; followed by post-processings, such as dewatering, addition, distillation, separation, and liquid separation for a hydrolyzed reaction product discharged from the reactor.

摘要翻译： 将作为待水解的目标化合物的聚氨酯水解和再循环到目标化合物的原料或其衍生物中的方法，包括将液态的加压水在190〜370℃的温度下与目标化合物接触， 反应器水解目标化合物; 然后进行后处理，例如从反应器排出的水解反应产物的脱水，添加，蒸馏，分离和液体分离。

公开(公告)号：US6061172A

公开(公告)日：2000-05-09

申请号：US162144

申请日：1998-09-29

申请人： Takao Naito ,  Naomasa Shimojoh ,  Takafumi Terahara

发明人： Takao Naito ,  Naomasa Shimojoh ,  Takafumi Terahara

IPC分类号： G02B5/18 ,  G02B6/02 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/094 ,  H01S3/10 ,  H01S3/16 ,  H01S3/00

CPC分类号： H01S3/094003 ,  H01S3/0675 ,  H01S3/1608

摘要： The present invention aims at providing an active optical fiber and an optical fiber amplifier, in which a conversion efficiency of pumping light to be input into the active optical fiber is increased to thereby improve optical amplification characteristic. To this end, the active optical fiber of the present invention is formed with fiber gratings arranged over a predetermined region along the longitudinal direction within the optical fiber doped with a rare earth element, and transmitting signal light and reflecting pumping light. Further, the optical fiber amplifier of the present invention is constituted to comprise a pumping light source for generating pumping light, and a multiplexer for multiplexing signal light and the pumping light to thereby output them into one end of the active optical fiber. Thus, the pumping light is reflected by the fiber gratings so as to go and return within the active optical fiber, thereby improving the conversion efficiency of the pumping light.

摘要翻译： 本发明的目的在于提供一种有源光纤和光纤放大器，其中增加输入有源光纤的泵浦光的转换效率，从而提高光放大特性。 为此，本发明的有源光纤由掺杂有稀土元素的光纤内沿着长度方向的预定区域配置的光纤光栅形成，并且传输信号光并反射泵浦光。 此外，本发明的光纤放大器构成为包括用于产生泵浦光的泵浦光源和用于复用信号光的多路复用器和泵浦光，从而将其输出到有源光纤的一端。 因此，泵浦光被光纤光栅反射，从而在有源光纤内返回，从而提高了泵浦光的转换效率。

公开(公告)号：US6036994A

公开(公告)日：2000-03-14

申请号：US180267

申请日：1998-11-06

申请人： Tetsuya Tanaka ,  Ken Takahashi ,  Akihiko Wachi ,  Takao Naito

发明人： Tetsuya Tanaka ,  Ken Takahashi ,  Akihiko Wachi ,  Takao Naito

IPC分类号： B41F15/08 ,  B41F15/10 ,  B41F15/26 ,  B41F33/00 ,  B41F33/14 ,  B41M1/12 ,  H05K3/12 ,  H05K3/34 ,  B05D5/12 ,  B05C17/06

CPC分类号： B41F15/10 ,  B41F15/0818 ,  B41F33/0081 ,  H05K3/1216 ,  B41P2215/114 ,  B41P2233/52 ,  Y10S101/36

摘要： A screen printing method is provided in which the exchange of machine types is achieved in a short time and even minute patterns or narrowly pitched patterns can be precisely positioned for screen printing. The method comprises finding an amount of movement of the circuit board from positions of recognition marks (2, 2) on a circuit board (1) and positions of recognition marks (5, 5) on a screen plate (4), positioning the circuit board (1) in relation to the screen plate (4) on the basis of the amount of movement of the circuit board (1), detecting a discrepancy between a pattern of apertures (18) and a pattern of lands (19) in a particular portion of the circuit board (1), finding a positional correction from the discrepancy, and positioning the circuit board (1) in relation to the screen plate (4) on the basis of the amount of movement of the circuit board and the positional correction.

摘要翻译： PCT No.PCT / JP97 / 01702 Sec。 371日期：1998年11月6日 102（e）日期1998年11月6日PCT提交1997年5月20日PCT公布。 出版物WO97 / 44192 日期1997年11月27日提供了一种丝网印刷方法，其中可以在短时间内实现机器类型的更换，甚至可以精确地定位几分之一的图案或狭窄的图案，以进行丝网印刷。 该方法包括从电路板（1）上的识别标记（2）和屏幕板（4）上的识别标记（5,5）的位置以及电路板上的识别标记位置（5）找到电路板的移动量， 基于电路板（1）的移动量相对于屏板（4）的板（1），检测孔（18）的图案与区域（19）的图案之间的差异 电路板（1）的特定部分，根据该差异找到位置校正，并且基于电路板的移动量和位置来相对于屏板（4）定位电路板（1） 更正。