公开(公告)号：US20100214006A1

公开(公告)日：2010-08-26

申请号：US12685024

申请日：2010-01-11

申请人： Satoshi HANAZAWA ,  Toshio Shinomiya ,  Hiroyasu Yoshizawa

发明人： Satoshi HANAZAWA ,  Toshio Shinomiya ,  Hiroyasu Yoshizawa

IPC分类号： H03K17/687

CPC分类号： H03K17/74 ,  H03K17/6874

摘要： There is provided a circuit whose output is free from high impedance to improve wrong transmission and waveform overshoot, realizing a semiconductor integrated circuit device in which plural channels is integrated with transmitter circuit as unit channel, in the transmitter circuit used in a medical ultrasound system and drives a transducer by voltage pulses having plural positive and negative electric potentials including ground potential. The transmitter circuit includes a conventional pulse generating circuit supplied with positive and negative voltage largest in absolute value, a P-channel analog switching pulse generating circuit supplied with positive voltage being the second largest therein, an N-channel analog switching pulse generating circuit supplied with negative voltage being the second largest, and an N-channel analog switching ground level damping circuit supplied with ground potential. The circuits are connected to output terminal. Switch control signals drive ultrasound transducers by turning on and off the circuits.

摘要翻译： 提供了一种电路，其输出没有高阻抗以改善错误的传输和波形过冲，实现了在用于医疗超声系统的发射机电路中多个信道与作为单位信道的发射机电路集成的半导体集成电路器件， 通过具有包括地电位的多个正电位和负电位的电压脉冲驱动换能器。 发送器电路包括以绝对值最大的正，负电压供给的常规脉冲发生电路，提供有其中第二大的正电压的P沟道模拟开关脉冲发生电路，提供有N沟道模拟开关脉冲发生电路 负电压为第二大，N沟道模拟开关接地电平阻尼电路提供地电位。 电路连接到输出端子。 开关控制信号通过打开和关闭电路来驱动超声波换能器。

公开(公告)号：US20100137720A1

公开(公告)日：2010-06-03

申请号：US12700625

申请日：2010-02-04

申请人： Satoshi HANAZAWA ,  Hiroyasu Yoshizawa

发明人： Satoshi HANAZAWA ,  Hiroyasu Yoshizawa

IPC分类号： A61B8/00 ,  H03K3/00

CPC分类号： H02M7/538 ,  H03K3/356113 ,  H03K19/018521

摘要： With an ultrasound pulser suitable for application to a medical ultrasound system, and so forth, a high voltage power supply of a transducer drive circuitry, on both high potential and low potential sides, is rendered variable in a range of 0 V on the order of ±200 V, thereby implementing a semiconductor integrated circuit wherein a plurality of the ultrasound pulsers corresponding to a plurality of channels, respectively, are integrally formed on a small area. The ultrasound pulser has a configuration wherein, in a MOSFET gate drive circuitry, an input voltage pulse is converted into a current pulse, and the current pulse is converted again into a voltage pulse on the basis of a high potential side voltage +HV, and a low potential side voltage −HV, applied to a transducer drive circuitry, whereupon voltage level shift in the input voltage pulse is attained, and a voltage pulse swing of an output buffer of the MOSFET gate drive circuitry receiving a shifted voltage pulse is generated by the MOSFET gate drive circuitry similarly on the basis of the high potential side voltage +HV, and the low potential side voltage −HV, applied to the transducer drive circuitry. The MOSFET gate drive circuitry is DC-coupled with the transducer drive circuitry.

摘要翻译： 利用适用于医疗超声系统的超声波脉冲发生器等，在高电位和低电位侧的换能器驱动电路的高电压电源可以在0V的范围内变化， ±200V，由此实现半导体集成电路，其中分别对应于多个通道的多个超声波脉冲器一体地形成在小区域上。 超声波脉冲发生器具有这样的结构，其中在MOSFET栅极驱动电路中，将输入电压脉冲转换为电流脉冲，并且基于高电位侧电压+ HV将电流脉冲再次转换为电压脉冲，以及 施加到换能器驱动电路的低电位侧电压-HV，由此获得输入电压脉冲中的电压电平偏移，并且通过接收移位的电压脉冲的MOSFET栅极驱动电路的输出缓冲器的电压脉冲摆幅由 MOSFET栅极驱动电路类似地基于施加到换能器驱动电路的高电位侧电压+ HV和低电位侧电压-HV。 MOSFET栅极驱动电路与换能器驱动电路直流耦合。

公开(公告)号：US20120249210A1

公开(公告)日：2012-10-04

申请号：US13350801

申请日：2012-01-15

申请人： Tetsuhiro SHIMIZU ,  Satoshi HANAZAWA ,  Toshio SHINOMIYA ,  Hiroyasu YOSHIZAWA

发明人： Tetsuhiro SHIMIZU ,  Satoshi HANAZAWA ,  Toshio SHINOMIYA ,  Hiroyasu YOSHIZAWA

IPC分类号： H03L5/00

CPC分类号： H03K17/6874 ,  G01S7/52017

摘要： A T/R switch applicable to an ultrasonograph and capable of transmitting a signal reflected from a living body over a wide band with low noise without causing erroneous operation of the switch or element destruction even when the potential of a transmission signal or reflected signal changes includes: a common source terminal commonly and serially coupling the source terminals of two MOS transistors; a common gate terminal commonly coupling the gate terminals of the two MOS transistors; a main switch, the drain terminals of which are connected to input/output terminals; and a floating voltage circuit which is connected to the common gate terminal and common source terminal, makes the common gate terminal potential follow, in phase, variation in the common source terminal potential, and sends a signal to turn the switch on or off to the common gate terminal.

摘要翻译： 适用于超声波诊断装置的AT / R开关，能够以较低的噪声在宽频带内以较低的噪声发送来自活体的信号，即使在发送信号或反射信号的电位变化的情况下，也不会导致开关或元件破坏的错误操作， 公共源极端子共同并串联耦合两个MOS晶体管的源极端子; 通常连接两个MOS晶体管的栅极端子的公共栅极端子; 主开关，其漏极端子连接到输入/输出端子; 以及与公共栅极端子和公共源极端子连接的浮置电压电路，使公共栅极电位跟随同相源极端子电位的相位变化，并发送信号将开关接通或断开 普通门终端。