公开(公告)号：US4042851A

公开(公告)日：1977-08-16

申请号：US608402

申请日：1975-08-27

申请人： Yoshio Yasuoka ,  Fumihiko Ito ,  Kunitada Tsuboi ,  Kaori Jinno ,  Masaru Yamano

发明人： Yoshio Yasuoka ,  Fumihiko Ito ,  Kunitada Tsuboi ,  Kaori Jinno ,  Masaru Yamano

IPC分类号： H01J23/10 ,  H01J23/20 ,  H01J25/50

CPC分类号： H01J23/10

摘要： A magnetron constructed by locating a pair of permanent magnets in a vacuum container which is an anode cylinder (i.e. shell) of magnetic material and has upper and lower covers of magnetic material to form a magnetic circuit. A high frequency resonator is formed by attaching anode vanes directly to the internal wall of the anode cylinder and providing a film of highly conductive material on the internal wall of the anode cylinder between the anode vanes. Terminals for the supply of power to a cathode disposed between the permanent magnets pass through a hole in at least one of the permanent magnets and one of the covers of the magnetic material. An antenna, or probe, extends out of a hole in the side wall of the anode cylinder, and heat radiative fins are attached directly to the external wall of the anode cylinder.

摘要翻译： 通过将一对永磁体定位在作为磁性材料的阳极筒（即外壳）的真空容器中并具有磁性材料的上盖和下盖以形成磁路的构造的磁控管。 通过将阳极叶片直接附接到阳极筒的内壁并且在阳极叶片之间的阳极筒的内壁上提供高导电性材料的膜来形成高频谐振器。 用于向设置在永磁体之间的阴极供电的端子通过至少一个永磁体和磁性材料的一个盖中的孔。 天线或探头从阳极圆筒的侧壁中的孔延伸出来，热辐射翅片直接附着在阳极筒的外壁上。

公开(公告)号：US08928868B2

公开(公告)日：2015-01-06

申请号：US14119115

申请日：2012-05-31

申请人： Hiroshi Takahashi ,  Fumihiko Ito ,  Xinyu Fan ,  Yusuke Koshikiya

发明人： Hiroshi Takahashi ,  Fumihiko Ito ,  Xinyu Fan ,  Yusuke Koshikiya

IPC分类号： G01N21/00 ,  G01M11/00

CPC分类号： G01M11/3109 ,  G01M11/3136 ,  G01M11/319

摘要： A test pulse is generated from a first and a second test light beam pulse with different wavelengths, with a predetermined time difference applied between the first and the second test light beam pulse. A circulator inputs the test pulse to a trunk fiber of a measurement target fiber line. A reflected light is extracted which is output from an input end of the trunk fiber. A filter extracts stimulated Brillouin backscattered light. A receiver receives and converts the scattered light into an electrical signal. A processing device carries out the signal to determine in which of N branched fibers the stimulated Brillouin scattered light is generated, while varying a time difference between the first and the second test pulse.

摘要翻译： 从具有不同波长的第一和第二测试光束脉冲产生测试脉冲，并且在第一和第二测试光束脉冲之间施加预定的时间差。 循环器将测试脉冲输入到测量目标光纤线路的干线光纤。 提取从躯干光纤的输入端输出的反射光。 滤波器提取受激布里渊背散射光。 接收机接收并将散射光转换成电信号。 处理装置执行信号以确定在哪个N个分支光纤中产生受激布里渊散射光，同时改变第一和第二测试脉冲之间的时间差。

公开(公告)号：US07239596B2

公开(公告)日：2007-07-03

申请号：US10848612

申请日：2004-05-19

申请人： Ryo Saitoh ,  Fumihiko Ito ,  Yoshinari Yokochi ,  Makoto Itonaga

发明人： Ryo Saitoh ,  Fumihiko Ito ,  Yoshinari Yokochi ,  Makoto Itonaga

IPC分类号： G11B7/00

CPC分类号： G11B7/139 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1392 ,  G11B2007/0006

摘要： There is disclosed an optical pickup device including: a blue semiconductor laser which emits a first laser light having a wavelength of 450 nm or less to record on or reproduce from an extra-high density optical disc; a red semiconductor laser which emits a second laser light having a wavelength longer than that of the first laser light to record on or reproduce from a DVD having a low recording density; an objective lens; and an aberration correction element. The objective lens is designed for the extra-high density optical disc, and has a numerical aperture (NA) of 0.75 or more. The aberration correction element passes the first laser light as such and thereafter allows the light to be incident upon the objective lens, whereas the element limits an aperture with respect to the second laser light and diffracts the second laser light so as to correct an aberration with respect to the DVD and thereafter allows the light to be incident upon the objective lens.

摘要翻译： 公开了一种光拾取装置，包括：蓝色半导体激光器，其发射波长为450nm以下的第一激光以在超高密度光盘上记录或从超高密度光盘再现; 红色半导体激光器，其发射波长比第一激光的波长长的第二激光，以从具有低记录密度的DVD记录或再现; 物镜; 和像差校正元件。 物镜设计用于超高密度光盘，数值孔径（NA）为0.75以上。 像差校正元件本身通过第一激光，然后允许光入射到物镜上，而元件限制相对于第二激光的光圈，并衍射第二激光以校正像差 相对于DVD，然后允许光入射到物镜上。

公开(公告)号：US08149419B2

公开(公告)日：2012-04-03

申请号：US12525287

申请日：2008-02-21

申请人： Xinyu Fan ,  Fumihiko Ito ,  Yusuke Koshikiya

发明人： Xinyu Fan ,  Fumihiko Ito ,  Yusuke Koshikiya

IPC分类号： G01B9/02 ,  G01N21/55

CPC分类号： G01M11/3172

摘要： An object of the invention is to provide an optical reflectometry and an optical reflectometer, in which accurate measurement can be performed irrespective of a measurement distance. In the optical reflectometry and optical reflectometer according to the invention, in which a distribution of backscattered light intensity from a measurement target in an optical propagation direction is measured using Optical Frequency Domain Reflectometry (OFDR), a coherence monitor unit 12 that monitors a coherence property of a frequency sweep light source 1 is provided, and measurement result of a measuring unit 11 is corrected based on the monitor result of the coherence monitor unit 12.

摘要翻译： 本发明的目的是提供光学反射计和光学反射计，其中可以执行精确的测量而不考虑测量距离。 在根据本发明的光学反射测量和光学反射计中，其中使用光频域反射仪（OFDR）测量来自测量目标的在光学传播方向上的反向散射光强度的分布，其中监视相干性能 提供了频率扫描光源1，并且基于相干监视单元12的监视结果来校正测量单元11的测量结果。

公开(公告)号：US5264774A

公开(公告)日：1993-11-23

申请号：US916275

申请日：1992-07-21

申请人： Fumihiko Ito

发明人： Fumihiko Ito

IPC分类号： H02P6/00 ,  H02P7/00

CPC分类号： H02P6/28 ,  H02P6/34

摘要： A motor control circuit and a motor drive system using the same, in which a first transistor between the collector-emitter of which a first current in response to a drive signal for driving a motor is flown and a second transistor the base of which is connected to the base of the first transistor and between the collector-emitter of which a second current in response to the first current is flown are included, and the second current or a current dependent upon the second current is outputted to the coil of the motor as a motor drive current and the second transistor is turned to the saturation condition when the voltage at the coil rises more than a predetermined value, comprising a detection circuit of the saturation condition which is connected to the base of the second transistor and generates a detection signal in response to a voltage variation of the base of the second transistor when the second transistor operates under the saturation condition; and a feed-back circuit which decreases the second current by decreasing the first current flowing through the first transistor in response to the detection signal.

摘要翻译： 一种电动机控制电路和使用该电动机控制电路的电动机驱动系统，其中响应于用于驱动电动机的驱动信号的第一电流的集电极 - 发射极之间的第一晶体管和其基极连接的第二晶体管 包括第一晶体管的基极和其中流过第一电流的第二电流的集电极 - 发射极之间，并且依赖于第二电流的第二电流或电流被输出到电动机的线圈，作为 当线圈上的电压上升超过预定值时，电动机驱动电流和第二晶体管变为饱和状态，包括连接到第二晶体管的基极的饱和状态的检测电路并产生检测信号 响应于当第二晶体管在饱和条件下工作时第二晶体管的基极的电压变化; 以及反馈电路，其通过响应于检测信号减小流过第一晶体管的第一电流而减小第二电流。

公开(公告)号：US20110077887A1

公开(公告)日：2011-03-31

申请号：US12990741

申请日：2009-05-14

申请人： Fumihiko Ito ,  Keiji Okamoto

发明人： Fumihiko Ito ,  Keiji Okamoto

IPC分类号： G06F19/00 ,  G01R23/16 ,  G01J3/00

CPC分类号： G01J3/2889 ,  G01J11/00 ,  H04J14/0221

摘要： Light to be measured L and sampling pulse light LSP are each split into M beams, and a time delay of 0, T, 2T, . . . , (M−1)T is given to each of the M-split sampling pulse light beams. The M-split light beams to be measured are then respectively multiplexed with M optical 90-degree hybrids, and M electrical field amplitudes per time T are determined for the light beam to be measured, based on M sets of output currents received at a balance light receiving element that receives light emitted from each of the optical 90-degree hybrids. The amplitudes of the respective wavelength optical signals contained in the light beam to be measured are calculated through Fourier transformations of the field electrical amplitudes. Pulsed light with a spectral width that covers the total frequency bandwidth of the light to be measured is used as the sampling pulse light. Where the total frequency bandwidth of the light to be measured is Δftotal, and the frequency interval of the optical signals contained in the light to be measured is Δf, T≦1/Δftotal and 1/(MT)≦Δf are set.

摘要翻译： 待测光L和采样脉冲光LSP分为M个光束，时间延迟为0，T，2T，。 。 。 ，（M-1）T被赋予每个M分割采样脉冲光束。 然后将待测量的M个分割光束分别与M个光学90度混合复用，并且基于在平衡处接收的M组输出电流来确定针对待测量的光束的每时间T的M个电场幅度 光接收元件，其接收从每个光学90度混合物发射的光。 通过场电场的傅立叶变换来计算包含在待测光束中的各波长光信号的振幅。 使用覆盖要测量的光的总频带宽的光谱宽度的脉冲光用作采样脉冲光。 要测量的光的总频率带宽为＆Dgr; ftotal，并且待测光中包含的光信号的频率间隔为＆Dgr; f，T＆nlE; 1 /＆Dgr; ftotal和1 /（MT）＆nlE ;＆Dgr; f设置。

公开(公告)号：US07064840B2

公开(公告)日：2006-06-20

申请号：US10679906

申请日：2003-10-06

申请人： Fumihiko Ito

发明人： Fumihiko Ito

IPC分类号： G01B9/02

CPC分类号： H04B10/079 ,  G01J5/0806 ,  G01J5/0862

摘要： The optical sampling system performs by detecting the interference effect which is a linear correlation between the signal lights and the optical pulses, so that both the signal lights and the optical pulses can have relatively low intensities, and the reception sensitivity is high. Also, the pulse width of the optical pulses and the amount of delay given to the optical pulses are the only factors that limit the time resolution, so that it is possible to provide the optical sampling system with excellent time resolution and power consumption properties, and it is possible for the optical sampling system to monitor not only the intensity of the signal lights but also the frequency modulation component as well.

摘要翻译： 光采样系统通过检测信号光和光脉冲之间的线性相关的干涉效应来进行，使得信号光和光脉冲都能够具有相对低的强度，并且接收灵敏度高。 此外，光脉冲的脉冲宽度和给予光脉冲的延迟量是限制时间分辨率的唯一因素，使得可以为光学采样系统提供优异的时间分辨率和功耗特性，以及 光采样系统可以不仅监控信号灯的强度，还可以监视调频分量。

公开(公告)号：US5300873A

公开(公告)日：1994-04-05

申请号：US970569

申请日：1992-11-03

申请人： Kenji Otani ,  Fumihiko Ito

发明人： Kenji Otani ,  Fumihiko Ito

IPC分类号： G11B15/46 ,  G11B15/473 ,  G11B19/20 ,  G11B19/28 ,  H02P6/10 ,  H02P5/28

CPC分类号： H02P6/10 ,  G11B15/46 ,  G11B19/20 ,  G11B19/28 ,  G11B15/4731

摘要： A motor control apparatus for rotating a motor smoothly. A sine wave form which is an ideal wave form of a signal is stored, and the motor is driven by a signal having the ideal wave form obtained by correcting the period and the phase of the stored sine wave form. A comparator receives a detection signal which indicates the rotating state of the motor through an A/D converter, and obtains the correction values of the current period and phase. A wave form setting means corrects the set period and phase, generates a sine wave having the corrected period and phase on the basis of the sine wave data stored in a sine wave data region, and outputs a driving signal having the sine wave form through a D/A converter.

摘要翻译： 一种用于使电动机平稳旋转的电动机控制装置。 存储作为信号的理想波形的正弦波形式，并且通过校正所存储的正弦波形式的周期和相位而获得的具有理想波形的信号来驱动电动机。 比较器通过A / D转换器接收指示电动机的旋转状态的检测信号，并获得当前周期和相位的校正值。 波形设置装置校正设定周期和相位，根据存储在正弦波数据区域中的正弦波数据产生具有校正周期和相位的正弦波，并通过一个正弦波形式输出具有正弦波形状的驱动信号 D / A转换器。

公开(公告)号：US08401808B2

公开(公告)日：2013-03-19

申请号：US12990741

申请日：2009-05-14

申请人： Fumihiko Ito ,  Keiji Okamoto

发明人： Fumihiko Ito ,  Keiji Okamoto

IPC分类号： G06F19/00

CPC分类号： G01J3/2889 ,  G01J11/00 ,  H04J14/0221

摘要： Light to be measured L and sampling pulse light LSP are each split into M beams, and a time delay of 0, T, 2T, . . . , (M−1)T is given to each of the M-split sampling pulse light beams. The M-split light beams to be measured are then respectively multiplexed with M optical 90-degree hybrids, and M electrical field amplitudes per time T are determined for the light beam to be measured, based on M sets of output currents received at a balance light receiving element that receives light emitted from each of the optical 90-degree hybrids. The amplitudes of the respective wavelength optical signals contained in the light beam to be measured are calculated through Fourier transformations of the field electrical amplitudes. Pulsed light with a spectral width that covers the total frequency bandwidth of the light to be measured is used as the sampling pulse light. Where the total frequency bandwidth of the light to be measured is Δftotal, and the frequency interval of the optical signals contained in the light to be measured is Δf, T≦1/Δftotal and 1/(MT)≦Δf are set.

摘要翻译： 待测光L和采样脉冲光LSP分为M个光束，时间延迟为0，T，2T，。 。 。 ，（M-1）T被赋予每个M分割采样脉冲光束。 然后将待测量的M个分割光束分别与M个光学90度混合复用，并且基于在平衡处接收的M组输出电流来确定针对待测量的光束的每时间T的M个电场幅度 光接收元件，其接收从每个光学90度混合物发射的光。 通过场电场的傅立叶变换来计算包含在待测光束中的各波长光信号的振幅。 使用覆盖要测量的光的总频带宽的光谱宽度的脉冲光用作采样脉冲光。 要测量的光的总频率带宽为＆Dgr; ftotal，并且待测光中包含的光信号的频率间隔为＆Dgr; f，T＆nlE; 1 /＆Dgr; ftotal和1 /（MT）＆nlE ;＆Dgr; f设置。

公开(公告)号：US5594783A

公开(公告)日：1997-01-14

申请号：US632731

申请日：1996-04-18

申请人： Fumihiko Ito

发明人： Fumihiko Ito

IPC分类号： H04M1/64 ,  H04M1/65 ,  H04M1/652 ,  H04M1/654 ,  H04M11/00 ,  H04N1/00 ,  H04N1/327 ,  H04N1/32

CPC分类号： H04M1/652 ,  H04M1/654 ,  H04N1/32704 ,  H04N1/3271 ,  H04N1/32717 ,  H04N1/32719 ,  H04N1/32726

摘要： An telephone answering apparatus connected to a facsimile apparatus. A controller transmits a response message stored in a memory to the line, and starts recording an incoming message inputted from the line into the memory. In a case where a tone detector detects a tone signal, the controller releases the line and records a switching message stored in the memory instead of the incoming message. This prevents wasting incoming message storing capacity due to recording a tone signal and erroneous operation of the facsimile apparatus caused by reproducing a recorded tone signal.

摘要翻译： 连接到传真设备的电话应答设备。 控制器将存储在存储器中的响应消息发送到线路，并开始将从线路输入的输入消息记录到存储器中。 在音调检测器检测到音调信号的情况下，控制器释放线路并记录存储在存储器中而不是输入消息的切换消息。 这防止由于记录音频信号而浪费输入的消息存储容量，并且由于再现记录的音调信号而导致的传真设备的错误操作。