公开(公告)号：US20090263133A1

公开(公告)日：2009-10-22

申请号：US12065155

申请日：2006-08-30

申请人： Junichi Nakagawa ,  Keiji Tanaka ,  Masato Kuwazuru ,  Noboru Edagawa

发明人： Junichi Nakagawa ,  Keiji Tanaka ,  Masato Kuwazuru ,  Noboru Edagawa

IPC分类号： H04J14/00

CPC分类号： H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0069 ,  H04Q2011/009

摘要： In a downstream channel communication, an individual downstream channel wavelength is allocated to each group of user nodes, and for user nodes in a same group, a central office performs a downstream-signal communication by a same communication method using the individual downstream channel wavelength. In an upstream channel communication, all user nodes perform an upstream-signal communication with the central office using a single upstream channel. A downstream signal from the central office is distributed to the groups for each individual downstream channel wavelength, and upstream signals from the user nodes are transmitted to the central office in a multiplexing manner.

摘要翻译： 在下游信道通信中，将各个下行信道波长分配给每组用户节点，并且对于同一组中的用户节点，中心局通过使用各个下游信道波长的相同通信方式执行下行信号通信。 在上游信道通信中，所有用户节点使用单个上游信道执行与中心局的上行信号通信。 来自中心局的下行信号被分配给每个单独下游信道波长的组，并且来自用户节点的上行信号以复用方式发送到中心局。

公开(公告)号：US20090079502A1

公开(公告)日：2009-03-26

申请号：US12232015

申请日：2008-09-09

申请人： Keiji Tanaka

发明人： Keiji Tanaka

IPC分类号： H03F3/45

CPC分类号： H03F3/45475 ,  H03F3/45183 ,  H03F3/45748 ,  H03F3/45973 ,  H03F2203/45138 ,  H03F2203/45212 ,  H03F2203/45441 ,  H03F2203/45521 ,  H03F2203/45588 ,  H03F2203/45682

摘要： A new offset canceling circuit for a differential circuit is disclosed whose input offset voltage may be cancelled independent of the variation of the input level, accordingly, enables the cut-off frequency of the canceling circuit unchanged. The offset canceller of the invention provides a buffer amplifier and a filter. The filter includes a capacitance multiplier including an operational amplifier (Op-Amp) operating in the inverting mode and a capacitor connected between the input and output of the Op-Amp. The Op-Amp operating in the inverting mode whose closed loop gain is solely determined by resistors, and the capacitance of the capacitor is multiplied by the closed loop gain of the Op-Amp by the Miller effect.

摘要翻译： 公开了一种用于差分电路的新的偏移消除电路，其输入偏移电压可以被取消，而与输入电平的变化无关，因此能够使取消电路的截止频率不变。 本发明的偏移消除器提供缓冲放大器和滤波器。 滤波器包括电容乘法器，其包括以反相模式工作的运算放大器（Op-Amp）和连接在运算放大器的输入和输出端之间的电容器。 运算在反相模式下的运算放大器，其闭环增益仅由电阻器确定，电容器的电容乘以运算放大器的闭环增益乘以米勒效应。

公开(公告)号：US20090035151A1

公开(公告)日：2009-02-05

申请号：US11813716

申请日：2006-04-07

申请人： Tetsuro Sugiura ,  Keiji Tanaka ,  Toshiharu Nakazawa ,  Koichi Kido ,  Tomoyuki Yamazaki

发明人： Tetsuro Sugiura ,  Keiji Tanaka ,  Toshiharu Nakazawa ,  Koichi Kido ,  Tomoyuki Yamazaki

IPC分类号： F04B49/06 ,  G05D7/00

CPC分类号： F04B51/00 ,  F04C18/126 ,  F04C18/16 ,  F04C23/001 ,  F04C25/02 ,  F04C2220/10 ,  F04C2270/80 ,  F04C2280/02

摘要： There are provided a vacuum pump self-diagnosis method, a vacuum pump self-diagnosis system, a vacuum pump central monitoring system capable of making self-diagnosis of a dry vacuum pump. A vacuum pump self-diagnosis method decides the occurrence of failure and generates an alarm when a predetermined alarm set value is exceeded by an integrated value or an average value of a current of a motor for rotating a rotor of said vacuum pump. In a vacuum pump self-diagnosis system for making self-diagnosis of a vacuum pump which comprises a casing and a rotor rotatably arranged in the casing for sucking and discharging a gas through rotations of the rotor, the rotor comprises a plurality of stages and a pressure sensor is provided between the rotor stages. A self-diagnosis unit is provided for calculating an integrated value or an average value of a current of a motor for rotating said rotor, and making self-diagnosis of the vacuum pump when the integrated value or average value exceeds a predetermined alarm set value. The self-diagnosis unit switches from one self-diagnosis calculation method to another or interrupts the self-diagnosis calculation based on a pressure value detected by said pressure sensor.

摘要翻译： 提供真空泵自诊断方法，真空泵自诊断系统，能够对干式真空泵进行自诊断的真空泵中央监控系统。 真空泵自诊断方法决定故障的发生，并且当超过预定的报警设定值的积分值或用于旋转所述真空泵的转子的电动机的电流的平均值时，产生报警。 在用于进行真空泵的自诊断的真空泵自诊断系统中，所述真空泵包括壳体和可转动地设置在所述壳体中的转子，用于通过所述转子的旋转吸入和排出气体，所述转子包括多个级和 压力传感器设置在转子级之间。 提供自诊断单元，用于计算用于旋转所述转子的电动机的电流的积分值或平均值，并且当所述积分值或平均值超过预定报警设定值时，进行所述真空泵的自诊断。 自诊断单元从一个自诊断计算方法切换到另一个，或者基于由所述压力传感器检测到的压力值中断自诊断计算。

公开(公告)号：US20080212628A1

公开(公告)日：2008-09-04

申请号：US12071056

申请日：2008-02-14

申请人： Keiji Tanaka

发明人： Keiji Tanaka

IPC分类号： H01S3/00

CPC分类号： H01S5/06832 ,  H01S5/0427 ,  H01S5/06804 ,  H01S5/06812

摘要： The present invention provides an auto-power control (APC) circuit and a method to stabilize the extinction ratio of an optical output from a laser diode (LD) in an optical transmitter. The APC circuit according to the invention includes two feedback loops for the modulation IM and the bias current IB each having variable loop gain. The extinction ratio of the optical output from the LD is kept constant by setting the ratio of the loop gains of respective APC circuits to be ER−1.

摘要翻译： 本发明提供一种自动功率控制（APC）电路和稳定来自光发射机中的激光二极管（LD）的光输出的消光比的方法。 根据本发明的APC电路包括用于调制I M和每个具有可变环路增益的偏置电流I B的两个反馈回路。 通过将各个APC电路的环路增益的比率设置为ER-1，LD的光输出的消光比保持恒定。

公开(公告)号：US20070098026A1

公开(公告)日：2007-05-03

申请号：US11583039

申请日：2006-10-19

申请人： Katsumi Uesaka ,  Keiji Tanaka

发明人： Katsumi Uesaka ,  Keiji Tanaka

IPC分类号： H01S3/13

CPC分类号： H01S5/042

摘要： The present invention is to provide a laser driver able to select configurations for the high speed application and for the lower speed and the lower power dissipation. The laser driver of the present invention provides a pair of transistors with the differential configuration whose outputs are complementary to each other, and a pair of load circuits connected between respective outputs of the paired transistor and the power supply line. Two outputs of the paired transistor are also connected to the anode and cathode of the laser diode and two load circuits each includes a switch to isolate the output of the transistor from the power supply line to vary the output impedance of the laser driver.

摘要翻译： 本发明提供一种激光驱动器，其能够选择用于高速应用和低速度以及较低功耗的配置。 本发明的激光驱动器提供一对具有彼此互补的差分配置的晶体管，以及连接在成对晶体管和电源线的各个输出端之间的一对负载电路。 成对晶体管的两个输出也连接到激光二极管的阳极和阴极，并且两个负载电路各自包括用于将晶体管的输出与电源线隔离的开关，以改变激光驱动器的输出阻抗。

公开(公告)号：US20060263100A1

公开(公告)日：2006-11-23

申请号：US11416389

申请日：2006-05-03

申请人： Katsumi Uesaka ,  Keiji Tanaka

发明人： Katsumi Uesaka ,  Keiji Tanaka

IPC分类号： H04B10/06

CPC分类号： H04B10/66 ,  H04B10/0799

摘要： The present invention provides an optical receiver able to monitor the level of the optical input signal in accurate even when the level is quite small. The optical receiver comprises a photodiode to generate a photocurrent Ipd, a current mirror circuit to reflect the photocurrent into a mirrored current Imon, a current-to-voltage converter to convert the mirrored current Imon to a voltage signal, switch to connect/cut the current mirror circuit with the current-to-voltage converter, and a correction unit for subtracting a signal when the switch is connected from a signal when the switch is cut.

摘要翻译： 本发明提供一种即使当该电平相当小时也能够准确地监视光输入信号的电平的光接收器。 光接收器包括光电二极管以产生光电流Ipd，将光电流反射成镜像电流Imon的电流镜电路，用于将镜像电流Imon转换成电压信号的电流 - 电压转换器，切换到连接/切割 具有电流 - 电压转换器的电流镜电路，以及用于当开关切断时从信号连接开关时减去信号的校正单元。

公开(公告)号：US20060006919A1

公开(公告)日：2006-01-12

申请号：US10995554

申请日：2004-11-24

申请人： Keiji Tanaka ,  Osamu Sarai ,  Fuminori Tanemura ,  Yoshito Date ,  Jun Suzuki

发明人： Keiji Tanaka ,  Osamu Sarai ,  Fuminori Tanemura ,  Yoshito Date ,  Jun Suzuki

IPC分类号： H03L5/00

CPC分类号： H03K17/223 ,  H03K3/356121 ,  H03K5/1506

摘要： A level shift circuit having a latch function includes a precharging PMOS transistor MP1 which is turned on in a precharge period to interrupt a through current of an input stage, an NMOS transistor MN1 which inputs data and performs discharging in a data input period, and a transistor MP2 for holding data after level shifting. Thus, each of the transistors can have a minimum configuration. Since the level shift circuit has a latch function, it is possible to omit a circuit for latching input data, thereby reducing a circuit area.

摘要翻译： 具有锁存功能的电平移位电路包括在预充电期间导通的中断输入级的通电的预充电PMOS晶体管MP1，在数据输入期间输入数据并进行放电的NMOS晶体管MN1， 以及用于在电平转换之后保持数据的晶体管MP2。 因此，每个晶体管可以具有最小的配置。 由于电平移位电路具有锁存功能，因此可以省略用于锁存输入数据的电路，从而减少电路面积。

公开(公告)号：US06951911B2

公开(公告)日：2005-10-04

申请号：US10272393

申请日：2002-10-15

申请人： Daisuke Tagawa ,  Tatsuya Asai ,  Yoshiyuki Iwasaki ,  Yoshihisa Ota ,  Keiji Tanaka

发明人： Daisuke Tagawa ,  Tatsuya Asai ,  Yoshiyuki Iwasaki ,  Yoshihisa Ota ,  Keiji Tanaka

IPC分类号： A61F13/15 ,  A61L15/60 ,  C08F2/00 ,  C08F4/06 ,  C08F8/12 ,  C08F220/04 ,  C08F220/06 ,  C08F220/56 ,  C08F120/06

CPC分类号： C08F220/06 ,  A61F13/15203 ,  A61L15/60 ,  C08F4/06 ,  C08F8/12 ,  C08F220/04 ,  C08F220/56 ,  C08F2810/20 ,  Y10S428/913 ,  Y10T428/31855 ,  Y10T442/20

摘要： A crosslinked polymer (A) which comprises, as essential structural units, units derived from (a) one or more vinyl monomers selected from the group consisting of water-soluble vinyl monomers and/or vinyl monomers which become water-soluble upon hydrolysis and units derived from (b) a crosslinking agent and which satisfies the following requirements: (1): (X)≧25 g/g, (2): (Y)≧15 g/g, and (3): (Y)≧−0.54 (X)+41. It has exceedingly high water retentivity and exceedingly high absorbing power under load. When applied to an absorbent structure and an absorbent article, the polymer has excellent absorbing performance. In the relationships, (X) is the amount of physiological saline retained through 1-hour absorption and (Y) is the amount of physiological saline absorbed through 1-hour standing under a load of 60 g/cm2.

摘要翻译： 一种交联聚合物（A），其包含作为必要结构单元的单元，所述单元衍生自（a）一种或多种选自水解乙烯基单体和/或乙烯基单体的乙烯基单体，所述水溶性乙烯基单体和/或乙烯基单体在水解时变得水溶性，并且单元 衍生自（b）交联剂并且满足以下要求：（1）：（X）> = 25g / g，（2）：（Y）> = 15g / g，（3）： ）= -0.54（X）+41。 它具有非常高的保水性和极高的负载吸收能力。 当应用于吸收性结构体和吸收性物品时，聚合物具有优异的吸收性能。 在这些关系中，（X）是通过1小时吸收保留的生理盐水的量，（Y）是在60g / cm 2的载荷下1小时静置吸收的生理盐水的量 >。

公开(公告)号：US20050185705A1

公开(公告)日：2005-08-25

申请号：US11061968

申请日：2005-02-16

申请人： Keiji Tanaka ,  Toshitaka Miyaoka ,  Noboru Edagawa

发明人： Keiji Tanaka ,  Toshitaka Miyaoka ,  Noboru Edagawa

IPC分类号： H04L29/08 ,  H04B1/38 ,  H04B3/23 ,  H04M11/00

CPC分类号： H04B3/238 ,  H04M3/2227 ,  H04M3/304

摘要： According to one embodiment of the invention, a control method of an xDSL modem to transmit/receive signals to/from an outer xDSL modem through an analog transmission line such as a telephone line is provided. A line quality of the analog transmission line is measured by training. A line profile is determined as a current profile of the analog transmission line according to the results from the training. A link is established with the determined current profile. Disconnected link is recovered with a standby profile.

摘要翻译： 根据本发明的一个实施例，提供了一种通过诸如电话线的模拟传输线路向/从外部xDSL调制解调器发送/接收信号的xDSL调制解调器的控制方法。 通过训练测量模拟传输线的线路质量。 根据训练的结果，线路轮廓被确定为模拟传输线的当前轮廓。 使用确定的当前配置文件建立链接。 备用配置文件恢复断开连接。

公开(公告)号：US06744823B1

公开(公告)日：2004-06-01

申请号：US09622216

申请日：2000-08-15

申请人： Akihiro Kamemura ,  Tadashi Araki ,  Kenji Kutsuki ,  Keiji Tanaka ,  Noriyuki Hirakata

发明人： Akihiro Kamemura ,  Tadashi Araki ,  Kenji Kutsuki ,  Keiji Tanaka ,  Noriyuki Hirakata

IPC分类号： H04B702

CPC分类号： G08G1/096716 ,  G08G1/094 ,  G08G1/09675 ,  G08G1/096775 ,  G08G1/096783 ,  H04B7/084 ,  H04B7/10 ,  H04B7/26 ,  H04B7/2609

摘要： Road transmission antennas (4a, 4b) are disposed along a road, each radiating a single cell (E) with electromagnetic waves at the same frequency and of the same content. A vehicle mounted device (3) receiving the waves from the road transmission antennas (4a, 4b) performs antenna pattern diversity reception. When entering a wave blocking area of a large vehicle, a small vehicle is provided with seamless communications with a stationary station (FIG. 1).

摘要翻译： 道路传输天线（4a，4b）沿着道路设置，每个辐射单个小区（E）具有相同频率和相同内容的电磁波。 接收来自道路发送天线（4a，4b）的波的车载装置（3）进行天线方向图分集接收。 当进入大型车辆的阻波区域时，小型车辆与固定站（图1）无缝通信。