公开(公告)号：US06573578B2

公开(公告)日：2003-06-03

申请号：US09922157

申请日：2001-08-06

申请人： Shigeharu Kimura ,  Kenji Maio ,  Takeshi Doi ,  Yoichi Tamaki ,  Takeshi Shimano

发明人： Shigeharu Kimura ,  Kenji Maio ,  Takeshi Doi ,  Yoichi Tamaki ,  Takeshi Shimano

IPC分类号： H01L2714

CPC分类号： H01L27/1443 ,  H01L31/02024

摘要： A photo semiconductor integrated circuit device has a photodiode portion and amplifier portion, each portion having a buried layer. The impurity concentration and/or depth of the buried layer for the photodiode portion is lower than that of the buried layer for the amplifier portion. As a result, the frequency band width is widened.

摘要翻译： 光半导体集成电路器件具有光电二极管部分和放大器部分，每个部分具有掩埋层。 用于光电二极管部分的掩埋层的杂质浓度和/或深度低于用于放大器部分的掩埋层的杂质浓度和/或深度。 结果，频带宽度变宽。

公开(公告)号：US06734730B2

公开(公告)日：2004-05-11

申请号：US10308003

申请日：2002-12-03

申请人： Takeshi Doi ,  Kenji Maio

发明人： Takeshi Doi ,  Kenji Maio

IPC分类号： H03G516

CPC分类号： H03G1/0088 ,  H03F3/72 ,  H03G3/3042

摘要： In order to provide a high sensitivity variable gain amplifier, there is provided a structure in which at least one path comprising at least a stage of the voltage-input/voltage-output amplifier+ a stage of voltage-input/current-output amplifier and a path comprising a stage of the voltage-input/current-output amplifier are connected in parallel between the input terminal and output terminal or, a structure in which a plurality of paths each comprising at least a stage of voltage-input/voltage-output amplifier+a stage of voltage-input/current-output amplifier are connected in parallel between the input terminal and output terminal. A gain is switched by selecting and operating any one of paths. When any one path is selected, an input impedance viewed from the input terminal is suppressed almost not to change or an output impedance viewed from the output terminal is suppressed almost not to change. Thereby, a high sensitivity wireless receiver can be realized.

摘要翻译： 为了提供高灵敏度可变增益放大器，提供了一种结构，其中至少一个路径包括电压输入/电压 - 输出放大器的至少一个级+电压输入/电流输出放大器的级和 包括电压输入/电流输出放大器的级的路径并联连接在输入端子和输出端子之间，或者其结构中，多个通路各自包括至少一级的电压输入/电压输出放大器 电压输入/电流输出放大器的一级在输入端子和输出端子之间并联连接。 通过选择和操作任何路径来切换增益。 当选择任何一个路径时，抑制从输入端子观察的输入阻抗几乎不变化，或者抑制从输出端子观察的输出阻抗几乎不改变。 因此，可以实现高灵敏度的无线接收器。

公开(公告)号：US07005922B2

公开(公告)日：2006-02-28

申请号：US10790184

申请日：2004-03-02

申请人： Takashi Oshima ,  Takeshi Doi ,  Kenji Maio ,  Irei Kyu

发明人： Takashi Oshima ,  Takeshi Doi ,  Kenji Maio ,  Irei Kyu

IPC分类号： H03G3/10

CPC分类号： H03G3/3068

摘要： In order to rapidly control the gains of a plurality of variable gain amplifiers VGAs, each of gain control circuits is configured to determine a gain to be set therein, based on gain control information received from other gain control circuits existing in its preceding stage or stages and the signal level detected by a level detector circuit connected thereto. By carrying out such gain control, a total application gain is stabilized more quickly by gain control. Therefore, even in receiving systems that the preparation period for reception is very short, desired gain control is achieved within this period and stable data reception can be performed.

摘要翻译： 为了快速地控制多个可变增益放大器VGA的增益，每个增益控制电路被配置为基于从其前一级或多级中存在的其他增益控制电路接收的增益控制信息来确定其中要设置的增益 以及由与其连接的电平检测器电路检测到的信号电平。 通过进行这种增益控制，通过增益控制可以更快地稳定总应用增益。 因此，即使在接收准备期间接收系统非常短的情况下，也能够在该期间内实现期望的增益控制，能够进行稳定的数据接收。

公开(公告)号：US06717471B2

公开(公告)日：2004-04-06

申请号：US10309140

申请日：2002-12-04

申请人： Satoshi Arayashiki ,  Kenji Maio ,  Takeshi Doi

发明人： Satoshi Arayashiki ,  Kenji Maio ,  Takeshi Doi

IPC分类号： H03G310

CPC分类号： H03G3/3052 ,  H03G3/3036

摘要： An automatic gain adjustment circuit for automatically adjusting the gain and DC output voltage of an amplifier against power supply fluctuations, temperature fluctuations and process variations and the amplifier using the circuit are provided. The gain and the DC output voltage are adjusted by providing a bias circuit for adjusting the operating current or gain of an amplifying element, connecting a load to the output electrode of the amplifying element to form an output terminal, connecting a variable current source for adjusting the operating voltage or DC output voltage of the amplifying element to the output electrode, connecting a gain detection circuit and a DC output voltage detection circuit to the output terminal, and feed backing the respective outputs of the detection circuits to the variable current source. A reference AC signal is inputted for gain adjustment. After the adjustment, changeover to a signal for amplifying the input is performed, while the output of the gain detection circuit is held in a Sample & Hold circuit.

摘要翻译： 提供一种自动增益调节电路，用于自动调节放大器的增益和直流输出电压，防止电源波动，温度波动和工艺变化以及使用该电路的放大器。 通过提供用于调整放大元件的工作电流或增益的偏置电路来调节增益和DC输出电压，将负载连接到放大元件的输出电极以形成输出端子，连接用于调节的可变电流源 将放大元件的工作电压或直流输出电压输出到输出电极，将增益检测电路和直流输出电压检测电路连接到输出端子，并将检测电路的各个输出馈送到可变电流源。 输入参考交流信号用于增益调整。 在调整之后，执行切换到用于放大输入的信号，同时将增益检测电路的输出保持在采样和保持电路中。

公开(公告)号：US09157990B2

公开(公告)日：2015-10-13

申请号：US13254657

申请日：2010-03-01

申请人： Atsushi Suzuki ,  Mitsuhiro Oshiki ,  Kanako Hatayama ,  Kenji Maio

发明人： Atsushi Suzuki ,  Mitsuhiro Oshiki ,  Kanako Hatayama ,  Kenji Maio

IPC分类号： G01S7/52 ,  A61B8/00 ,  G10K11/34 ,  G01N29/24

CPC分类号： G01S7/52079 ,  A61B8/4444 ,  A61B8/54 ,  A61B8/56 ,  B06B2201/76 ,  G01N29/24 ,  G01N2291/106 ,  G01S7/52017 ,  G10K11/341

摘要： An ultrasonic transmitting/receiving circuit equipped with: a semiconductor circuit element which comprises at least three terminals including a first terminal connected to a plurality of transducer elements that constitute an ultrasonic probe, a second terminal connected to a transmission signal generating circuit, and a third terminal serving as an output terminal of an amplifier of a reception signal from the transducer element, and which has a function of amplifying a signal inputted from one terminal by the other terminal and outputting the amplified signal between at least two terminals among the above-said three terminals; and a control unit which performs control so as to cause the semiconductor circuit element to perform a first function of functioning as a switch for inputting a transmission signal to the transducer element and a second function of amplifying the reception signal received from the transducer element.

摘要翻译： 一种超声波发射/接收电路，配备有：半导体电路元件，其包括至少三个端子，包括连接到构成超声波探头的多个换能器元件的第一端子，连接到发送信号发生电路的第二端子和第三端子 作为来自换能器元件的接收信号的放大器的输出端子，其具有放大由另一端子从一个端子输入的信号的功能，并且在上述的至少两个端子之间输出放大的信号 三个终端; 以及控制单元，其执行控制以使半导体电路元件执行用作向换能器元件输入发送信号的开关的第一功能和放大从换能器元件接收的接收信号的第二功能。

公开(公告)号：US20120046552A1

公开(公告)日：2012-02-23

申请号：US13254743

申请日：2010-03-01

申请人： Mitsuhiro Oshiki ,  Kenji Maio

发明人： Mitsuhiro Oshiki ,  Kenji Maio

IPC分类号： A61B8/14

CPC分类号： G01S7/52019 ,  A61B8/56 ,  B06B1/0207 ,  B06B2201/20 ,  G01S7/52023 ,  G01S7/5208 ,  G01S15/8915

摘要： In order to provide an ultrasonic diagnostic apparatus with a transceiver circuit configuration which has a small number of components and is suitable for miniaturization, an amplifier circuit used for both transmission and reception which can be built in an ultrasonic probe and has a function of adding currents of received signals from plural elements is provided in the ultrasonic diagnostic apparatus. In addition, an analog matrix switch (402) for arbitrarily adding received signals from plural transducers is provided. That is, a transmitted and received signal amplifier circuit is shared by using a transceiver circuit section, which is formed by an FET element serving as a source follower circuit, as a gate-grounded amplifier during a signal reception period. The received signals from the transducers which have been amplified by FET elements can be added for each group of arbitrary elements by the matrix current switch (402) formed by plural FET elements corresponding to the respective transducers.

摘要翻译： 为了提供具有少量部件并且适合于小型化的收发器电路配置的超声波诊断装置，用于传输和接收的放大器电路可以内置在超声波探头中并且具有增加电流的功能 来自多个元件的接收信号被设置在超声波诊断装置中。 此外，提供了用于任意地添加来自多个换能器的接收信号的模拟矩阵开关（402）。 也就是说，在信号接收期间，通过使用由作为源极跟随器电路的FET元件形成的收发器电路部分作为栅极接地放大器来共享发送和接收的信号放大器电路。 来自由FET元件放大的换能器的接收信号可以由对应于各个换能器的多个FET元件形成的矩阵电流开关（402）加到每组任意元件上。

公开(公告)号：US20120029351A1

公开(公告)日：2012-02-02

申请号：US13259347

申请日：2010-04-01

申请人： Kanako Hatayama ,  Kenji Maio

发明人： Kanako Hatayama ,  Kenji Maio

IPC分类号： A61B8/14

CPC分类号： B06B1/0207 ,  A61B8/00 ,  B06B2201/76 ,  G01S7/5202 ,  Y10S367/903

摘要： In order to simplify a manufacturing process and reduce cost and power consumption by providing an ultrasonic diagnostic apparatus including a carrier signal generating circuit excellent in IC implementation, a carrier signal generating circuit for generating an output voltage Vo applied to an ultrasonic probe 41 includes cascaded source follower type NMOSFETs 11 to 14, a variable current source 31, and a constant current source for biasing 32. The probe 41 can be made to generate the output voltage Vo with arbitrary amplitude by controlling a gate voltage V4 by controlling the output current value of the variable current source 31. In addition, a voltage applied to each NMOSFET can be divided by connecting the NMOSFETs 11 to 14 in a multi-stage manner. Accordingly, the withstand voltage of the NMOSFET may be low.

摘要翻译： 为了简化制造过程并通过提供包括IC实现方面优异的载体信号发生电路的超声波诊断装置来降低成本和功耗，用于产生施加到超声波探头41的输出电压Vo的载波信号发生电路包括级联源 跟随器型NMOSFET 11至14，可变电流源31和用于偏置32的恒流源。探针41可以通过控制栅极电压V4来控制栅极电压V4，从而产生具有任意幅度的输出电压Vo 可变电流源31.此外，通过以多级方式连接NMOSFET 11至14，可以分压施加到每个NMOSFET的电压。 因此，NMOSFET的耐压可能较低。

公开(公告)号：US06867936B2

公开(公告)日：2005-03-15

申请号：US09941867

申请日：2001-08-30

申请人： Yasuyuki Ookuma ,  Kenji Maio ,  Yoichiro Kobayashi ,  Hiroyasu Yoshizawa

发明人： Yasuyuki Ookuma ,  Kenji Maio ,  Yoichiro Kobayashi ,  Hiroyasu Yoshizawa

IPC分类号： G11B5/09 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02

CPC分类号： G11B5/02 ,  G11B5/012 ,  G11B2005/0013

摘要： A magnetic head driving circuit includes a main driving circuit symmetrical with respect to a centered recording coil, and at least two pairs of adding circuits, each pair including a positive pulse adding circuit and a negative pulse superposed circuit symmetrical with respect to the centered coil. And, by reversing the direction of the magnetic head coil current, at least one of the adding circuits is made to operate and make it as a magnetic head driving circuit for adding a potential equal to or higher than the power supply, thereby to drive as a sub-driving circuit arranged symmetrically with respect to the centered coil, which promotes the reversal of the magnetic head coil current, and which drives stably with a central potential of the coil at about the disk potential.

摘要翻译： 磁头驱动电路包括相对于中心记录线圈对称的主驱动电路和至少两对加法电路，每对加法电路包括相对于中心线圈对称的正脉冲加法电路和负脉冲叠加电路。 并且，通过使磁头线圈电流的方向反转，使加法电路中的至少一个进行工作，并将其作为用于增加等于或高于电源的电位的磁头驱动电路，从而作为 子驱动电路相对于中心线圈对称地布置，其促进磁头线圈电流的反转，并且以围绕盘电位的线圈的中心电位稳定地驱动。

公开(公告)号：US4125825A

公开(公告)日：1978-11-14

申请号：US680865

申请日：1976-04-27

申请人： Yasuhisa Takeuchi ,  Kenji Maio ,  Junichiro Matsumoto

发明人： Yasuhisa Takeuchi ,  Kenji Maio ,  Junichiro Matsumoto

IPC分类号： B60T8/72 ,  B60T8/88 ,  B60T8/10

CPC分类号： B60T8/885 ,  B60T2270/416

摘要： In an automatic brake controller having a vehicle velocity detector for detecting vehicle velocity and a wheel velocity detector for detecting wheel velocity, a failure detecting system is provided for the vehicle velocity detector and the wheel velocity detector. A comparator which makes a comparison between the vehicle velocity signal obtained from said vehicle velocity detector and the wheel velocity signal obtained from said wheel velocity detector generates a predetermined output signal when the difference between both the output signals of said detectors exceeds a predetermined value, and a logical circuit is responsive to said output signal from said comparator to provide a failure signal when a signal representative of a normal transit condition is being generated.

摘要翻译： 在具有用于检测车速的车速检测器和用于检测车轮速度的车轮速度检测器的自动制动控制器中，为车速检测器和车轮速度检测器提供故障检测系统。 当所述检测器的两个输出信号之间的差超过预定值时，将从所述车速检测器获得的车速信号与从所述车轮速度检测器获得的车轮速度信号进行比较的比较器产生预定的输出信号， 当正在产生表示正常转接条件的信号时，逻辑电路响应于来自所述比较器的所述输出信号以提供故障信号。

公开(公告)号：US20120113759A1

公开(公告)日：2012-05-10

申请号：US13148306

申请日：2010-02-02

申请人： Mitsuhiro Oshiki ,  Atsushi Suzuki ,  Kanako Hatayama ,  Kenji Maio

发明人： Mitsuhiro Oshiki ,  Atsushi Suzuki ,  Kanako Hatayama ,  Kenji Maio

IPC分类号： G01V1/18

CPC分类号： A61B8/00 ,  G01N29/24 ,  G01N29/262 ,  G01S7/52019 ,  G01S7/5208 ,  G01S7/52082 ,  G01S15/8915 ,  G10K11/346

摘要： An ultrasonic diagnostic apparatus characterized by comprising, a probe which has a transducer and which transmits and receives ultrasonic waves, an ultrasonic diagnostic apparatus main body; and a cable through which signals are transmitted and received between the ultrasonic diagnostic apparatus main body and the probe, wherein the probe includes a transmission signal generator that generates an ultrasonic transmission signal, a transmission circuit that amplifies the generated transmission signal, and a transmission phasing circuit that adjusts the timing of the transmission signal.

摘要翻译： 一种超声波诊断装置，其特征在于，包括：具有换能器并且发送和接收超声波的探针;超声波诊断装置主体; 以及在超声波诊断装置主体和探头之间传送和接收信号的电缆，其中探头包括产生超声波发送信号的发送信号发生器，放大所产生的发送信号的发送电路和发送定相 调整发送信号的定时的电路。