公开(公告)号：US08937565B2

公开(公告)日：2015-01-20

申请号：US13591781

申请日：2012-08-22

Applicant: Isaac Terasuth Ko ,  Ka Wai Ho ,  Wan Tim Chan

Inventor： Isaac Terasuth Ko ,  Ka Wai Ho ,  Wan Tim Chan

IPC: H03M1/00 ,  H03H11/30 ,  H04N19/126 ,  H03M1/36 ,  H03M1/12 ,  H03M1/06

CPC classification number: H03H11/30 ,  H03M1/00 ,  H03M1/0695 ,  H03M1/12 ,  H03M1/365 ,  H04N19/126

Abstract: An impedance matching transmission circuit for a transducer has a transmission medium connected to the transducer. A transmitting circuit is connected to the transmission medium with the transmitting circuit terminating in a reference circuit element. The transmitting circuit comprises an analog to digital converter having an analog input connected to the reference circuit element, and having a digital output. A digital to analog converter receives the digital output and generates an analog output signal in response thereto. A driver circuit is connected to the transmission medium and receives the analog output signal and supplies a driver signal to the transmission medium.

Abstract translation: 用于换能器的阻抗匹配传输电路具有连接到换能器的传输介质。 发送电路连接到传输介质，发射电路终止于参考电路元件。 发射电路包括具有连接到参考电路元件的模拟输入并且具有数字输出的模数转换器。 数模转换器接收数字输出并响应于此产生模拟输出信号。 驱动器电路连接到传输介质并接收模拟输出信号并将驱动信号提供给传输介质。

公开(公告)号：US08269656B2

公开(公告)日：2012-09-18

申请号：US12786345

申请日：2010-05-24

Applicant: Isaac Terasuth Ko ,  Ka Wai Ho ,  Wan Tim Chan

Inventor： Isaac Terasuth Ko ,  Ka Wai Ho ,  Wan Tim Chan

IPC: H03M1/00

CPC classification number: H03H11/30 ,  H03M1/00 ,  H03M1/0695 ,  H03M1/12 ,  H03M1/365 ,  H04N19/126

Abstract: An impedance matching transmission circuit for a transducer has a transmission medium connected to the transducer. A transmitting circuit is connected to the transmission medium with the transmitting circuit terminating in a reference circuit element. The transmitting circuit comprises an analog to digital converter having an analog input connected to the reference circuit element, and having a digital output. A digital to analog converter receives the digital output and generates an analog output signal in response thereto. A driver circuit is connected to the transmission medium and receives the analog output signal and supplies a driver signal to the transmission medium.

Abstract translation: 用于换能器的阻抗匹配传输电路具有连接到换能器的传输介质。 发送电路连接到传输介质，发射电路终止于参考电路元件。 发射电路包括具有连接到参考电路元件的模拟输入并且具有数字输出的模数转换器。 数模转换器接收数字输出并响应于此产生模拟输出信号。 驱动器电路连接到传输介质并接收模拟输出信号并将驱动信号提供给传输介质。

公开(公告)号：US08193839B2

公开(公告)日：2012-06-05

申请号：US12786331

申请日：2010-05-24

Applicant: Isaac Terasuth Ko ,  Ka Wai Ho ,  Wan Tim Chan

Inventor： Isaac Terasuth Ko ,  Ka Wai Ho ,  Wan Tim Chan

IPC: H03B1/00 ,  H03K3/00

CPC classification number: H01L41/042 ,  B06B1/0207 ,  B06B2201/51 ,  B06B2201/55 ,  H03K4/02 ,  H03K5/156 ,  H03K19/0002

Abstract: A multi-level transmitter circuit with substantially constant output impedance has a capacitive transducer connected between a voltage input and ground. A first voltage path connects the voltage input to a first positive voltage source. The first voltage path is controlled by a first control signal. A second voltage path connects the voltage input to a second positive voltage source, less than the first positive voltage source. The second voltage path passes through a diode and is controlled by a second control signal. A third voltage path connects the voltage input to a third voltage source, less than ground, and is controlled by the second control signal. The impedance at the voltage input during the first control signal is substantially the same as the impedance at the voltage input during the second control signal.

Abstract translation: 具有基本上恒定的输出阻抗的多电平发射机电路具有连接在电压输入和地之间的电容式换能器。 第一电压路径将电压输入连接到第一正电压源。 第一电压路径由第一控制信号控制。 第二电压路径将电压输入连接到第二正电压源，小于第一正电压源。 第二电压路径通过二极管并由第二控制信号控制。 第三电压路径将电压输入连接到小于地的第三电压源，并由第二控制信号控制。 第一控制信号期间的电压输入端的阻抗与第二控制信号期间的电压输入处的阻抗基本相同。

公开(公告)号：US20120313485A1

公开(公告)日：2012-12-13

申请号：US13591781

申请日：2012-08-22

Applicant: Isaac Terasuth KO ,  Ka Wai HO ,  Wan Tim CHAN

Inventor： Isaac Terasuth KO ,  Ka Wai HO ,  Wan Tim CHAN

IPC: H01L41/09

CPC classification number: H03H11/30 ,  H03M1/00 ,  H03M1/0695 ,  H03M1/12 ,  H03M1/365 ,  H04N19/126

Abstract: An impedance matching transmission circuit for a transducer has a transmission medium connected to the transducer. A transmitting circuit is connected to the transmission medium with the transmitting circuit terminating in a reference circuit element. The transmitting circuit comprises an analog to digital converter having an analog input connected to the reference circuit element, and having a digital output. A digital to analog converter receives the digital output and generates an analog output signal in response thereto. A driver circuit is connected to the transmission medium and receives the analog output signal and supplies a driver signal to the transmission medium.

Abstract translation: 用于换能器的阻抗匹配传输电路具有连接到换能器的传输介质。 发送电路连接到传输介质，发射电路终止于参考电路元件。 发射电路包括具有连接到参考电路元件的模拟输入并且具有数字输出的模数转换器。 数模转换器接收数字输出并响应于此产生模拟输出信号。 驱动器电路连接到传输介质并接收模拟输出信号并将驱动信号提供给传输介质。

公开(公告)号：US20110285561A1

公开(公告)日：2011-11-24

申请号：US12786345

申请日：2010-05-24

Applicant: Isaac Terasuth Ko ,  Ka Wai Ho ,  Wan Tim Chan

Inventor： Isaac Terasuth Ko ,  Ka Wai Ho ,  Wan Tim Chan

IPC: H03M1/02

CPC classification number: H03H11/30 ,  H03M1/00 ,  H03M1/0695 ,  H03M1/12 ,  H03M1/365 ,  H04N19/126

Abstract: An impedance matching transmission circuit for a transducer has a transmission medium connected to the transducer. A transmitting circuit is connected to the transmission medium with the transmitting circuit terminating in a reference circuit element. The transmitting circuit comprises an analog to digital converter having an analog input connected to the reference circuit element, and having a digital output. A digital to analog converter receives the digital output and generates an analog output signal in response thereto. A driver circuit is connected to the transmission medium and receives the analog output signal and supplies a driver signal to the transmission medium.

Abstract translation: 用于换能器的阻抗匹配传输电路具有连接到换能器的传输介质。 发送电路连接到传输介质，发射电路终止于参考电路元件。 发射电路包括具有连接到参考电路元件的模拟输入并且具有数字输出的模数转换器。 数模转换器接收数字输出并响应于此产生模拟输出信号。 驱动器电路连接到传输介质并接收模拟输出信号并将驱动信号提供给传输介质。

公开(公告)号：US20110285457A1

公开(公告)日：2011-11-24

申请号：US12786331

申请日：2010-05-24

Applicant: Isaac Terasuth Ko ,  Ka Wai Ho ,  Wan Tim Chan

Inventor： Isaac Terasuth Ko ,  Ka Wai Ho ,  Wan Tim Chan

IPC: G05F3/02

CPC classification number: H01L41/042 ,  B06B1/0207 ,  B06B2201/51 ,  B06B2201/55 ,  H03K4/02 ,  H03K5/156 ,  H03K19/0002

Abstract: A multi-level transmitter circuit with substantially constant output impedance has a capacitive transducer connected between a voltage input and ground. A first voltage path connects the voltage input to a first positive voltage source. The first voltage path is controlled by a first control signal. A second voltage path connects the voltage input to a second positive voltage source, less than the first positive voltage source. The second voltage path passes through a diode and is controlled by a second control signal. A third voltage path connects the voltage input to a third voltage source, less than ground, and is controlled by the second control signal. The impedance at the voltage input during the first control signal is substantially the same as the impedance at the voltage input during the second control signal.

Abstract translation: 具有基本上恒定的输出阻抗的多电平发射机电路具有连接在电压输入和地之间的电容式换能器。 第一电压路径将电压输入连接到第一正电压源。 第一电压路径由第一控制信号控制。 第二电压路径将电压输入连接到第二正电压源，小于第一正电压源。 第二电压路径通过二极管并由第二控制信号控制。 第三电压路径将电压输入连接到小于地的第三电压源，并由第二控制信号控制。 第一控制信号期间的电压输入端的阻抗与第二控制信号期间的电压输入处的阻抗基本相同。