公开(公告)号：US09455693B2

公开(公告)日：2016-09-27

申请号：US13907493

申请日：2013-05-31

Applicant: STMicroelectronics S.r.l.

Inventor： Davide Ugo Ghisu ,  Antonio Ricciardo ,  Sandro Rossi

IPC: H03K17/00 ,  H04B11/00 ,  H03K5/08 ,  H03K17/10 ,  H03K17/687 ,  H03K17/693

CPC classification number: H03K5/084 ,  H03K17/102 ,  H03K17/6872 ,  H03K17/6874 ,  H03K17/693 ,  H03K2217/0054 ,  H04B11/00

Abstract: A switching circuit for transmission channel for ultrasound applications is electrically coupled between a connection terminal and a low voltage output terminal. The switching circuit includes a receiving switch, a high voltage clamp circuit electrically coupled between the connection terminal and a central node, and a low voltage clamping switch electrically coupled between said central node and a reference voltage. The receiving switch is a low voltage switch and is electrically coupled between the central node and the low voltage output terminal. The clamping switch and the receiving switch are controlled in a complementary way with respect to each other. A transmission channel for ultrasound applications includes the switching circuit.

Abstract translation: 用于超声应用的传输通道的切换电路电耦合在连接端子和低电压输出端子之间。 开关电路包括接收开关，电连接在连接端子和中心节点之间的高电压钳位电路以及电耦合在所述中心节点和参考电压之间的低压钳位开关。 接收开关是低压开关，并且电耦合在中心节点和低压输出端子之间。 夹紧开关和接收开关以互补的方式相互控制。 用于超声应用的传输通道包括开关电路。

公开(公告)号：US20160179121A1

公开(公告)日：2016-06-23

申请号：US14573438

申请日：2014-12-17

Applicant: STMicroelectronics S.r.l.

Inventor： Davide Ugo Ghisu ,  Sandro Rossi ,  Dario Bianchi

IPC: G05F3/02 ,  H03K19/0185

CPC classification number: B06B1/0215 ,  A61B8/4483 ,  G05F3/02 ,  H03K3/356182 ,  H03K17/0822 ,  H03K17/687 ,  H03K19/018521 ,  H03K2217/0063

Abstract: A transmission channel transmits high-voltage pulses and receives echos of the high-voltage pulses. The transmission channel includes a buffer with anti-memory circuitry to couple drains of the buffer transistors to voltage reference terminals during a clamping phase.

Abstract translation: 传输通道传输高电压脉冲并接收高电压脉冲的回波。 传输通道包括具有防存储器电路的缓冲器，以在夹持阶段将缓冲晶体管的漏极耦合到电压参考端子。

公开(公告)号：US09323270B1

公开(公告)日：2016-04-26

申请号：US14553749

申请日：2014-11-25

Applicant: STMicroelectronics S.r.l.

Inventor： Sandro Rossi ,  Davide Ugo Ghisu ,  Fabio Quaglia ,  Antonio Davide Leone

IPC: G05F3/02

CPC classification number: G05F3/02 ,  B06B1/0215 ,  H03K4/94 ,  H03K17/162

Abstract: A transmission channel transmits high-voltage pulses and receives echos of the high-voltage pulses. The transmission channel includes a current generator circuit, which generates current-integrator drive currents, a receiver, which amplifies transducer-echo signals, and control circuitry. The control circuitry generates one or more control signals to control generation of current-integrator drive currents by the current generator circuit during transducer-driving periods and reception of transducer-echo signals by the receiver during echo-reception periods. A current integrator integrates current-integrator drive currents generated by current generator circuit to generate transducer drive signals.

Abstract translation: 传输通道传输高电压脉冲并接收高电压脉冲的回波。 传输通道包括产生电流积分器驱动电流的电流发生器电路，放大换能器回波信号的接收器和控制电路。 控制电路产生一个或多个控制信号，以在换能器驱动期间由电流发生器电路控制电流积分器驱动电流的产生，并且在回波接收周期期间由接收器接收换能器 - 回波信号。 电流积分器集成了由电流发生器电路产生的电流积分器驱动电流以产生换能器驱动信号。