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    • 73. 发明申请
    • PROCESS-LIQUID SUPPLY MECHANISM AND PROCESS-LIQUID SUPPLY METHOD
    • 过程液体供应机制和工艺液体供应方法
    • US20100037963A1
    • 2010-02-18
    • US12593996
    • 2008-09-22
    • Shu Yamamoto
    • Shu Yamamoto
    • B01J4/00B67D7/78G01F23/00
    • G01F23/00B01J4/008Y10T137/0324Y10T137/7303
    • A process-liquid supply part includes: a supply tank configured to contain a process liquid; a level gauge pipe connected to the supply tank, the level gauge pipe being provided with level sensors for detecting a remaining amount of the process liquid contained in the supply tank; and a measuring part configured to measure a remaining amount of the process liquid based on signals from the level sensors provided on the level gauge pipe. Connected to the supply tank are a process-liquid supply pipe configured to drain the process liquid contained in the supply tank, and a process-liquid return pipe configured to introduce the process liquid drained through the process-liquid supply pipe to the supply tank. A connection pipe, in which an openable and closable valve is provided, disposed between the process-liquid supply pipe or the process-liquid return pipe and the level gauge pipe.
    • 处理液供给部包括:供给槽,其配置成容纳处理液; 液位计管连接到供应罐,液位计管设有液位传感器,用于检测包含在供应罐中的处理液的剩余量; 以及测量部,其被配置为基于来自设置在液位计管上的液位传感器的信号来测量处理液的剩余量。 与供给罐连接的是处理液供给管,其配置为排出供给槽中所含有的处理液,以及处理液返回管,其配置为将通过处理液供给管排出的处理液引入供给槽。 设置在处理液供给管或处理液返回管与液位计管之间的连接管,其中设置有可开闭阀。
    • 75. 发明授权
    • Surveillance method of optical communication line
    • 光通信线路监控方法
    • US5903375A
    • 1999-05-11
    • US778249
    • 1997-01-08
    • Yukio HoriuchiShu Yamamoto
    • Yukio HoriuchiShu Yamamoto
    • G01M11/00G02F1/35H04B10/035H04B10/07H04B10/071H04B10/077H04B10/17
    • H04B10/07H04B10/071
    • To enable the surveillance of a long-distance optical fiber line that a method using the reflection lights and Rayleigh backscatter lights cannot cover, a plurality of optical reflection elements P1-Pn are interposed in the optical fiber line at each specific distance. Each of the optical reflection elements P1-Pn reflects only a light signal of one of specific wavelengths .lambda.1-.lambda.n on a constant level. Light pulses of the specific wavelengths .lambda.1-.lambda.n are transmitted to the optical fiber line to measure intensities of the light pulses reflected by the optical reflection elements P1-Pn. From the measurement, surveillance of the optical fiber line can be done between the transmitter and each of positions of the optical reflection elements P1-Pn. The reflectance of the optical reflection elements P1-Pn can be set to 100%, and the surveillance becomes possible even if the length of the optical fiber line exceeds 200 km.
    • 为了能够对使用反射光和瑞利后向散射光的方法不能覆盖的长距离光纤线路的监视,在光纤线路中以各特定距离插入多个光反射元件P1-Pn。 每个光学反射元件P1-Pn仅反射一个特定波长λ1-λn之一的光信号为恒定电平。 特定波长λ1-λn的光脉冲被发送到光纤线路以测量由光反射元件P1-Pn反射的光脉冲的强度。 通过测量,可以在发送器与光反射元件P1-Pn的各个位置之间进行光纤线路的监视。 光反射元件P1-Pn的反射率可以设定为100%,即使光纤线路的长度超过200km也可以进行监视。
    • 78. 发明授权
    • Optical access system
    • 光接入系统
    • US5930015A
    • 1999-07-27
    • US794048
    • 1997-02-03
    • Takaya YamamotoKatsuyuki YamazakiShu YamamotoYotaro Yatsuzuka
    • Takaya YamamotoKatsuyuki YamazakiShu YamamotoYotaro Yatsuzuka
    • H04J14/00H04B10/03H04B10/07H04B10/079H04B10/27H04B10/293H04B10/524H04B10/564H04B10/572H04J1/00H04J14/02H04J14/08H04L7/00H04L7/04
    • H04J14/02H04B10/2587H04J14/08H04L7/0075H04L7/041
    • An optical access system is disclosed in which subscribers' terminals and optical coupler-splitters of nodes are maintenance-free and required control is effected on the part of the central office alone. At a first position, down-link optical digital signals are generated, which are made "1s" every n bits (n being an integer equal to greater than 2). The optical digital signals, except a train of optical pulses every n bits, are sent as down-link information over a transmission line. At a second position, the optical digital signals, except the optical pulse train, are demodulated from the transmitted down-link optical digital signals, and in an optical gate circuit on which the down-link optical digital signals are incident, up-link optical digital signals based on up-link message data is formed in synchronization with the optical pulses corresponding to every n-th bits and is transmitted to the first position over the transmission line. At the first position, the up-link optical digital signals sent from the second position is received from the transmission line.
    • 公开了一种光接入系统,其中节点的用户终端和光耦合器分离器是免维护的,并且仅在中心局的部分进行所需的控制。 在第一位置,产生下行链路光数字信号,其每n位(n等于大于2的整数)被制成“1”。 每n位除了一列光脉冲之外的光数字信号通过传输线作为下行链路信息发送。 在第二位置,除了光脉冲序列之外的光数字信号从发送的下行链路光数字信号中解调,并且在下行链路光数字信号入射的光栅电路中,上行链路光 基于上行链路消息数据的数字信号与对应于每个第n位的光脉冲同步地形成,并通过传输线传输到第一位置。 在第一位置,从传输线接收从第二位置发送的上行链路光数字信号。
    • 79. 发明授权
    • Optical wavelength monitoring apparatus
    • 光波长监测仪
    • US5898502A
    • 1999-04-27
    • US878543
    • 1997-06-19
    • Yukio HoriuchiShu Yamamoto
    • Yukio HoriuchiShu Yamamoto
    • G01J1/16G01J9/00H04B10/07H04B10/079H04B110/08G01J3/51
    • G01J1/1626G01J9/00
    • In an optical wavelength monitoring apparatus for easily monitoring wavelength deviation, light introduced from a laser source 10 to an optical transmission line 12 is divided by directional couplers 14, 20. Optical output of the directional coupler 14 is converted into an electrical signal by a photodiode 16, and logarithmic-amplified by a logarithmic amplifier 18. Optical output of the directional coupler 20 is introduced to a photodiode 26 via an optical filter 24. The optical filter 24 is an optical element whose transmittance decreases as the incident light deviates from a specific wavelength .lambda.a. Optical output from the optical filter 24 is converted into an electrical signal by a photodiode 26, and logarithmic-amplified by a logarithmic amplifier 28. A differential amplifier 30 outputs a difference between outputs of the amplifiers 18, 28. A comparator 32 compares the output of the differential amplifier 30 with an alarm threshold Vref, and outputs an alarm-on signal when the difference is Vref or higher.
    • 在用于容易监测波长偏差的光波长监测装置中,从激光源10引入到光传输线12的光被定向耦合器14,20分开。定向耦合器14的光输出由光电二极管转换成电信号 定向耦合器20的光输出通过滤光器24被引入光电二极管26.光学滤光器24是一种光学元件,其透光率随着入射光偏离特定的光学元件而降低 波长λa。 来自滤光器24的光输出由光电二极管26转换成电信号,由对数放大器28对数放大。差分放大器30输出放大器18,28的输出之间的差。比较器32将输出 差分放大器30具有报警阈值Vref,并且当差值为Vref或更高时输出报警开启信号。