Patents by Inventor Antonio Davide Leone

Antonio Davide Leone has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11150279
    Abstract: A circuit includes a switching circuit including a first switch and a second switch. A current sensing circuit is coupled to the switching circuit to sense a first current through the first switch and to generate a first sensed current signal based on the sensed first current, and configured to sense a second current through the second switch and to generate a second sensed current signal based on the sensed second current. An output circuit is coupled to the current sensing circuit and is configured to generate a failure signal based on the first sensed current signal and the second sensed current signal.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: October 19, 2021
    Assignee: STMicroelectronics S.r.l.
    Inventors: Vanni Poletto, Riccardo Miglierina, Antonio Davide Leone, Sergio Lecce
  • Publication number: 20190383861
    Abstract: A circuit includes a switching circuit including a first switch and a second switch. A current sensing circuit is coupled to the switching circuit to sense a first current through the first switch and to generate a first sensed current signal based on the sensed first current, and configured to sense a second current through the second switch and to generate a second sensed current signal based on the sensed second current. An output circuit is coupled to the current sensing circuit and is configured to generate a failure signal based on the first sensed current signal and the second sensed current signal.
    Type: Application
    Filed: August 28, 2019
    Publication date: December 19, 2019
    Inventors: Vanni Poletto, Riccardo Miglierina, Antonio Davide Leone, Sergio Lecce
  • Patent number: 10444264
    Abstract: A device measures the current in an inductive load using two separate current-measuring paths to detect the current in the inductive load. The inductive load is connected between first and second nodes, and the first node connected to a first voltage. The device includes first and second transistors cascaded together between the first node and a third node that is connected to a second voltage. First and second sense amplifiers measure the current in the inductive load. The first and second sense amplifiers are connected to at least one terminal of the first and second transistors. Two blocks sample and hold signals from the first and second sense amplifiers, which represent, respectively, the currents in the two separate current-measuring paths. The two currents are subtracted in a comparison node for generating an error signal that is compared with a predefined window and if outside the window a failure signal is generated.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: October 15, 2019
    Assignee: STMicroelectronics S.r.l.
    Inventors: Vanni Poletto, Riccardo Miglierina, Antonio Davide Leone, Sergio Lecce
  • Publication number: 20190162759
    Abstract: A device measures the current in an inductive load using two separate current-measuring paths to detect the current in the inductive load. The inductive load is connected between first and second nodes, and the first node connected to a first voltage. The device includes first and second transistors cascaded together between the first node and a third node that is connected to a second voltage. First and second sense amplifiers measure the current in the inductive load. The first and second sense amplifiers are connected to at least one terminal of the first and second transistors. Two blocks sample and hold signals from the first and second sense amplifiers, which represent, respectively, the currents in the two separate current-measuring paths. The two currents are subtracted in a comparison node for generating an error signal that is compared with a predefined window and if outside the window a failure signal is generated.
    Type: Application
    Filed: January 30, 2019
    Publication date: May 30, 2019
    Inventors: Vanni Poletto, Riccardo Miglierina, Antonio Davide Leone, Sergio Lecce
  • Patent number: 10215782
    Abstract: A device measures the current in an inductive load using two separate current-measuring paths to detect the current in the inductive load. The inductive load is connected between first and second nodes, and the first node connected to a first voltage. The device includes first and second transistors cascaded together between the first node and a third node that is connected to a second voltage. First and second sense amplifiers measure the current in the inductive load. The first and second sense amplifiers are connected to at least one terminal of the first and second transistors. Two blocks sample and hold signals from the first and second sense amplifiers, which represent, respectively, the currents in the two separate current-measuring paths. The two currents are subtracted in a comparison node for generating an error signal that is compared with a predefined window and if outside the window a failure signal is generated.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: February 26, 2019
    Assignee: STMicroelectronics S.R.L.
    Inventors: Vanni Poletto, Riccardo Miglierina, Antonio Davide Leone, Sergio Lecce
  • Patent number: 10145728
    Abstract: Described herein is a transceiver circuit for a capacitive micromachined ultrasonic transducer (CMUT), provided with: a transmitter stage, which generates excitation pulses for a first node of the CMUT transducer during a transmitting phase, a second node of the CMUT transducer being coupled to a biasing voltage; a receiver stage that is selectively coupled to the first node during a receiving phase and has an amplification stage; a switching stage that couples the receiver stage to the first node during the receiving phase and decouples the receiver stage from the first node during the transmitting phase. The amplification stage is provided with a charge amplifier that has an input terminal and is biased as a function of a biasing voltage; and the switching stage is coupled to the same biasing voltage thereby minimizing an injection of charge into the input terminal upon switching from the transmitting phase to the receiving phase.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: December 4, 2018
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Antonio Davide Leone, Davide Ugo Ghisu, Fabio Quaglia
  • Patent number: 10114114
    Abstract: An ultrasonic probe includes: an ultrasonic transducer; an amplification stage; a bias circuit, which determines a bias voltage on an input terminal of the amplification stage; and a selector having an intermediate node, a high-voltage switch between the intermediate node and the transducer, and a first low-voltage switch between the intermediate node and the input terminal. A control unit controls the high-voltage switch and the first low-voltage switch so as to alternately couple and decouple the amplification stage and the transducer. A precharge circuit determines a precharge voltage on the intermediate node as a function of the bias voltage, before the amplification stage and the transducer are coupled.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: October 30, 2018
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Antonio Davide Leone, Davide Ugo Ghisu, Fabio Quaglia
  • Publication number: 20170322240
    Abstract: A device measures the current in an inductive load using two separate current-measuring paths to detect the current in the inductive load. The inductive load is connected between first and second nodes, and the first node connected to a first voltage. The device includes first and second transistors cascaded together between the first node and a third node that is connected to a second voltage. First and second sense amplifiers measure the current in the inductive load. The first and second sense amplifiers are connected to at least one terminal of the first and second transistors. Two blocks sample and hold signals from the first and second sense amplifiers, which represent, respectively, the currents in the two separate current-measuring paths. The two currents are subtracted in a comparison node for generating an error signal that is compared with a predefined window and if outside the window a failure signal is generated.
    Type: Application
    Filed: December 7, 2016
    Publication date: November 9, 2017
    Inventors: Vanni Poletto, Riccardo Miglierina, Antonio Davide Leone, Sergio Lecce
  • Patent number: 9772645
    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. 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. A current integrator integrates current-integrator drive currents generated by current generator circuit to generate transducer drive signals.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: September 26, 2017
    Assignee: STMICROELECTRONICS S.R.L
    Inventors: Sandro Rossi, Davide Ugo Ghisu, Fabio Quaglia, Antonio Davide Leone
  • Publication number: 20160204778
    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. 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. A current integrator integrates current-integrator drive currents generated by current generator circuit to generate transducer drive signals.
    Type: Application
    Filed: March 21, 2016
    Publication date: July 14, 2016
    Inventors: Sandro Rossi, Davide Ugo Ghisu, Fabio Quaglia, Antonio Davide Leone
  • Patent number: 9323270
    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.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: April 26, 2016
    Assignee: STMicroelectronics S.r.l.
    Inventors: Sandro Rossi, Davide Ugo Ghisu, Fabio Quaglia, Antonio Davide Leone
  • Publication number: 20160076933
    Abstract: Described herein is a transceiver circuit for a capacitive micromachined ultrasonic transducer (CMUT), provided with: a transmitter stage, which generates excitation pulses for a first node of the CMUT transducer during a transmitting phase, a second node of the CMUT transducer being coupled to a biasing voltage; a receiver stage that is selectively coupled to the first node during a receiving phase and has an amplification stage; a switching stage that couples the receiver stage to the first node during the receiving phase and decouples the receiver stage from the first node during the transmitting phase. The amplification stage is provided with a charge amplifier that has an input terminal and is biased as a function of a biasing voltage; and the switching stage is coupled to the same biasing voltage thereby minimizing an injection of charge into the input terminal upon switching from the transmitting phase to the receiving phase.
    Type: Application
    Filed: June 25, 2015
    Publication date: March 17, 2016
    Inventors: Antonio Davide Leone, Davide Ugo Ghisu, Fabio Quaglia
  • Publication number: 20160077198
    Abstract: An ultrasonic probe includes: an ultrasonic transducer; an amplification stage; a bias circuit, which determines a bias voltage on an input terminal of the amplification stage; and a selector having an intermediate node, a high-voltage switch between the intermediate node and the transducer, and a first low-voltage switch between the intermediate node and the input terminal. A control unit controls the high-voltage switch and the first low-voltage switch so as to alternately couple and decouple the amplification stage and the transducer. A precharge circuit determines a precharge voltage on the intermediate node as a function of the bias voltage, before the amplification stage and the transducer are coupled.
    Type: Application
    Filed: March 26, 2015
    Publication date: March 17, 2016
    Inventors: Antonio Davide Leone, Davide Ugo Ghisu, Fabio Quaglia