公开(公告)号：US06316862B1

公开(公告)日：2001-11-13

申请号：US09533858

申请日：2000-03-24

申请人： Masao Nakata ,  Motoya Yamamoto ,  Toshihiro Uchida ,  Teruhisa Matsushita

发明人： Masao Nakata ,  Motoya Yamamoto ,  Toshihiro Uchida ,  Teruhisa Matsushita

IPC分类号： H01L4104

CPC分类号： H02N2/147 ,  H02N2/142

摘要： In a motor drive apparatus for an ultrasonic motor, a microcomputer checks whether a starter is driven within a predetermined time period from a detection of motor lock, when the motor lock is detected before the detection of a decrease in a battery voltage. The starter drive is stored in its internal memory. The microcomputer checks whether the starter was driven within the predetermined time period, when the battery voltage is restored and the starter drive is completed. The microcomputer drives the ultrasonic motor again if the check result indicates that the starter motor was driven.

摘要翻译： 在超声波马达的马达驱动装置中，在检测到电池电压下降之前检测到马达锁定时，微型计算机检查起动器是否在从马达锁定的检测的预定时间段内被驱动。 启动器驱动器存储在其内部存储器中。 当电池电压恢复并且起动器驱动完成时，微型机检查起动器是否在预定时间段内被驱动。 如果检查结果表明启动电机被驱动，微型计算机再次驱动超声波电机。

公开(公告)号：US20090153951A1

公开(公告)日：2009-06-18

申请号：US12351560

申请日：2009-01-09

申请人： Maki Hiraizumi ,  Yoshio Shimano ,  Masao Nakata

发明人： Maki Hiraizumi ,  Yoshio Shimano ,  Masao Nakata

IPC分类号： H01S3/30

CPC分类号： H01S3/10015 ,  H01S3/005 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/0912 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/0775 ,  H04B10/2916

摘要： A pumping unit supplies pumping light to a fiber connecting medium, a light monitoring unit detects light power of multiple-wavelength light; and a control unit controls the pumping light based on light power detected by the light monitoring unit and connecting medium information indicating optical characteristics in the connecting medium. The connecting medium information includes information indicating a fiber type of the fiber connecting medium, information indicating a length of the fiber connecting medium, an average fiber loss coefficient of the fiber connecting medium and an intra-station loss value.

摘要翻译： 泵送单元向纤维连接介质提供泵浦光，光监测单元检测多波长光的光功率; 并且控制单元基于由光监视单元检测到的光功率和指示连接介质中的光学特性的连接介质信息来控制泵浦光。 连接介质信息包括指示光纤连接介质的光纤类型的信息，指示光纤连接介质的长度的信息，光纤连接介质的平均光纤损耗系数和站内损耗值。

公开(公告)号：US20080316591A1

公开(公告)日：2008-12-25

申请号：US12213565

申请日：2008-06-20

申请人： Tatsuya Tsuzuki ,  Norifumi Shukunami ,  Yuji Tamura ,  Yoshio Shimano ,  Masao Nakata ,  Takashi Satou

发明人： Tatsuya Tsuzuki ,  Norifumi Shukunami ,  Yuji Tamura ,  Yoshio Shimano ,  Masao Nakata ,  Takashi Satou

IPC分类号： H01S3/00

CPC分类号： H04B10/2942 ,  H01S3/06758 ,  H01S3/1301 ,  H01S2301/04

摘要： According to an aspect of the embodiment of the invention, an optical amplifier including an input port, an output port, a plurality of amplifying parts, an optical attenuator, a gain controller and an optical attenuator controller. The plurality of amplifying parts includes an optical amplification medium and a pumping light source for generating pump light. The optical attenuator is optically connected between the amplifying parts. The gain controller controls the pump light power of the pump sources, respectively, in such a way that the ratio decreases in accordance with the gain set value increasing and the ratio interpose between a first threshold level and a second threshold level. The optical attenuator controller controls attenuation of the optical attenuator in order to maintain the sum of generating gains of the amplifying parts in the gain set value in accordance with a state of the signal light inputted into the input port.

摘要翻译： 根据本发明实施例的一个方面，一种包括输入端口，输出端口，多个放大部件，光衰减器，增益控制器和光衰减器控制器的光放大器。 多个放大部件包括光放大介质和用于产生泵浦光的泵浦光源。 光衰减器光学连接在放大部件之间。 增益控制器分别控制泵浦源的泵浦光功率，使得该比率根据增益设定值增加而减小，并且比例介于第一阈值水平和第二阈值水平之间。 光衰减器控制器控制光衰减器的衰减，以便根据输入到输入端口的信号光的状态将放大部分的增益的总和保持在增益设定值中。

公开(公告)号：US20110019268A1

公开(公告)日：2011-01-27

申请号：US12873795

申请日：2010-09-01

申请人： Maki Hiraizumi ,  Yoshio Shimano ,  Masao Nakata

发明人： Maki Hiraizumi ,  Yoshio Shimano ,  Masao Nakata

IPC分类号： H01S3/30

CPC分类号： H01S3/10015 ,  H01S3/005 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/0912 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/0775 ,  H04B10/2916

摘要： A pumping unit supplies pumping light to a fiber connecting medium; a light monitoring unit detects light power of multiple-wavelength light; and a control unit controls the pumping light based on light power detected by the light monitoring unit and connecting medium information indicating optical characteristics in the connecting medium. The connecting medium information includes information indicating a fiber type of the fiber connecting medium, information indicating a length of the fiber connecting medium, an average fiber loss coefficient of the fiber connecting medium and an intra-station loss value.

公开(公告)号：US20080049303A1

公开(公告)日：2008-02-28

申请号：US11892531

申请日：2007-08-23

申请人： Masao Nakata

发明人： Masao Nakata

IPC分类号： H01S3/00

CPC分类号： H01S3/302

摘要： A Raman amplifier that amplifies a signal light intensity by using a Raman amplification effect of an optical fiber transmission channel has an excitation unit that supplies excitation lights of a plurality of wavelengths to the optical fiber transmission channel and performs Raman amplification, a signal light monitor that monitors the signal light intensity of each wavelength contained in the signal light that is Raman amplified, an output light intensity deviation monitoring circuit that finds a deviation in the intensity of each signal light detected by the signal light monitor, and an excitation light control circuit that controls an excitation light intensity from excitation light sources of each wavelength constituting the excitation unit so as to correspond to a predetermined characteristic based on a deviation of the intensity of signal light found by the output light intensity deviation monitoring circuit.

摘要翻译： 通过使用光纤传输通道的拉曼放大效应来放大信号光强度的拉曼放大器具有向光纤传输通道提供多个波长的激发光并执行拉曼放大的激励单元，信号光监视器 监视拉曼放大的信号光中包含的每个波长的信号光强度，发现由信号光监视器检测到的每个信号光的强度偏差的输出光强度偏差监视电路和激发光控制电路， 控制来自构成激励单元的各波长的激发光源的激发光强度，以便基于由输出光强度偏差监视电路发现的信号光强度的偏差对应于预定特性。

公开(公告)号：US06267131B1

公开(公告)日：2001-07-31

申请号：US09594345

申请日：2000-06-15

申请人： Mutsuo Masada ,  Masao Nakata ,  Masahiro Shiraishi ,  Makoto Ogawa ,  Katsuhiro Kato ,  Yukiharu Okubo

发明人： Mutsuo Masada ,  Masao Nakata ,  Masahiro Shiraishi ,  Makoto Ogawa ,  Katsuhiro Kato ,  Yukiharu Okubo

IPC分类号： G05D1620

CPC分类号： G05D16/2013 ,  Y10T137/0379 ,  Y10T137/0396 ,  Y10T137/2012 ,  Y10T137/4673 ,  Y10T137/7501 ,  Y10T137/7761

摘要： A method of controlling pressure in a chamber, wherein the pressure in a chamber in which measurement such as laser measurement is conducted is maintained at a set pressure with respect to fluctuations in external atmospheric pressure, characterized by comprising: detecting the external atmospheric pressure, obtaining a long-term flat pressure value with respect to short time fluctuations of the detected external atmospheric pressure, creating a set pressure in the chamber by adding a predetermined pressure to the obtained pressure value, and detecting the pressure in the chamber while introducing external air so that the pressure in the chamber reaches the set pressure.

摘要翻译： 一种控制室内的压力的方法，其中进行诸如激光测量的测量的室中的压力相对于外部大气压的波动保持在设定压力，其特征在于包括：检测外部大气压力，获得 相对于检测到的外部大气压力的短时间波动的长期平坦压力值，通过向所获得的压力值添加预定压力来产生室内的设定压力，并且在引入外部空气的同时检测腔室中的压力 室内的压力达到设定压力。

公开(公告)号：US20120307351A1

公开(公告)日：2012-12-06

申请号：US13562086

申请日：2012-07-30

申请人： Maki Hiraizumi ,  Yoshio Shimano ,  Masao Nakata

发明人： Maki Hiraizumi ,  Yoshio Shimano ,  Masao Nakata

IPC分类号： H01S3/30

CPC分类号： H01S3/10015 ,  H01S3/005 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/0912 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/0775 ,  H04B10/2916

摘要： A pumping unit supplies pumping light to a fiber connecting medium; a light monitoring unit detects light power of multiple-wavelength light; and a control unit controls the pumping light based on light power detected by the light monitoring unit and connecting medium information indicating optical characteristics in the connecting medium. The connecting medium information includes information indicating a fiber type of the fiber connecting medium, information indicating a length of the fiber connecting medium, an average fiber loss coefficient of the fiber connecting medium and an intra-station loss value.

摘要翻译： 泵送单元向光纤连接介质提供泵浦光; 光监视单元检测多波长光的光功率; 并且控制单元基于由光监视单元检测到的光功率和指示连接介质中的光学特性的连接介质信息来控制泵浦光。 连接介质信息包括指示光纤连接介质的光纤类型的信息，指示光纤连接介质的长度的信息，光纤连接介质的平均光纤损耗系数和站内损耗值。

公开(公告)号：US07835067B2

公开(公告)日：2010-11-16

申请号：US11960366

申请日：2007-12-19

申请人： Masao Nakata

发明人： Masao Nakata

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04B10/2916 ,  H01S3/06754 ,  H01S3/1305 ,  H01S3/302

摘要： When pump light is supplied to a transmission line fiber from a downstream station toward an upstream station and signal light from the upstream station is Raman-amplified, a corresponding intensity of amplified spontaneous scattering light is calculated from a required Raman gain by using a correlation between a Raman gain and the intensity of amplified spontaneous scattering light that occurs with Raman amplification, and further a target light intensity is calculated from the obtained intensity of the amplified spontaneous scattering light and the intensity of the amplified signal light. Then, the intensity of the pump light is controlled so that the intensity of light, which is measured by the downstream station, becomes equivalent to the target light intensity.

摘要翻译： 当泵浦光从下游站向上游站提供到传输线光纤并且来自上游站的信号光被拉曼放大时，通过使用所需拉曼增益来计算放大的自发散射光的相应强度， 通过拉曼放大发生的拉曼增益和放大的自发散射光的强度，并且从所获得的放大的自发散射光的强度和放大的信号光的强度计算目标光强度。 然后，控制泵浦光的强度，使得由下游站测量的光的强度变得等于目标光强度。

公开(公告)号：US07554721B2

公开(公告)日：2009-06-30

申请号：US10882266

申请日：2004-07-02

申请人： Maki Hiraizumi ,  Yoshio Shimano ,  Masao Nakata

发明人： Maki Hiraizumi ,  Yoshio Shimano ,  Masao Nakata

IPC分类号： H04B10/17

CPC分类号： H01S3/10015 ,  H01S3/005 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/0912 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/0775 ,  H04B10/2916

摘要： A pumping unit supplies pumping light to a fiber connecting medium; a light monitoring unit detects light power of multiple-wavelength light; and a control unit controls the pumping light based on light power detected by the light monitoring unit and connecting medium information indicating optical characteristics in the connecting medium. The connecting medium information includes information indicating a fiber type of the fiber connecting medium, information indicating a length of the fiber connecting medium, an average fiber loss coefficient of the fiber connecting medium and an intra-station loss value.

摘要翻译： 泵送单元向光纤连接介质提供泵浦光; 光监视单元检测多波长光的光功率; 并且控制单元基于由光监视单元检测到的光功率和指示连接介质中的光学特性的连接介质信息来控制泵浦光。 连接介质信息包括指示光纤连接介质的光纤类型的信息，指示光纤连接介质的长度的信息，光纤连接介质的平均光纤损耗系数和站内损耗值。

公开(公告)号：US07145717B2

公开(公告)日：2006-12-05

申请号：US10793273

申请日：2004-03-05

申请人： Masao Nakata ,  Kosuke Komaki ,  Yoshio Shimano

发明人： Masao Nakata ,  Kosuke Komaki ,  Yoshio Shimano

IPC分类号： H04B10/12

CPC分类号： H04B10/296 ,  H01S3/10015 ,  H01S3/1301 ,  H01S5/0617

摘要： An optical amplifier that improves transmission quality by driving an excitation light source according to a change in the level of an input optical signal and by compensating for a change in the characteristics of the excitation light source. An optical amplification section includes an amplification medium doped with an active substance for optical amplification and an excitation light source for emitting excitation light. A constant-gain control section finds out target excitation light power to be set according to a change in the level of an input optical signal on the basis of a correlation between a gain and excitation light power to obtain a target gain, finds out a target drive signal for making the excitation light source emit the target excitation light power on the basis of a correlation between a drive signal for driving the excitation light source and excitation light power, and exercises constant-gain control over the optical amplification section by a feedforward control system.

摘要翻译： 一种光放大器，其通过根据输入光信号的电平的变化驱动激励光源并补偿激发光源的特性的变化来提高传输质​​量。 光放大部分包括掺杂有用于光放大的活性物质的放大介质和用于发射激发光的激发光源。 恒定增益控制部根据增益与激励光功率之间的相关关系，根据输入光信号的电平的变化，求出要设定的目标激励光功率，求出目标增益，求出目标 驱动信号用于使激发光源基于用于驱动激励光源的驱动信号与激励光功率之间的相关性发射目标激励光功率，并且通过前馈控制对光放大部分进行恒定增益控制 系统。