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    Programmable ultrasonic transceiver
    1.
    发明授权
    Programmable ultrasonic transceiver 有权

    公开(公告)号：US10700792B2

    公开(公告)日：2020-06-30

    申请号：US15920300

    申请日：2018-03-13

    Applicant: Chirp Microsystems, Inc.

    Inventor： Richard Przybyla ,  Mitchell Kline ,  David Horsley

    IPC: H04L29/00 ,  H04B11/00 ,  B06B1/02 ,  G01S7/523 ,  G06F8/65 ,  H04L9/08 ,  H04L9/30 ,  H04L29/08 ,  H04W12/02 ,  H04L27/34 ,  H04W88/02

    Abstract: An ultrasonic transceiver system includes a transmitter block, a receiver block, a state machine, a computer unit. The transmitter block contains circuitry configured to drive an ultrasound transducer. The receiver block contains circuitry configured to receive signals from the ultrasound transducer and convert the signals into digital data. The state machine is coupled to the transmitter and receiver blocks and contains circuitry configured to act as a controller for those blocks. The computing unit is coupled to the transmitter block, the receiver block, and the state machine and is configured to drive the transmitter block and process data received from the receiver block by executing instructions of a program. The program memory is coupled to the computing unit and is configured to store the program. The computing unit is configured to be reprogrammed with one or more additional programs stored in the program memory.

    Ultrasonic Liquid Level Sensing
    3.
    发明申请
    Ultrasonic Liquid Level Sensing 有权

    公开(公告)号：US20220316938A1

    公开(公告)日：2022-10-06

    申请号：US17707688

    申请日：2022-03-29

    Applicant: Chirp Microsystems, Inc.

    Inventor： Cristabel Yang ,  Richard J. Przybyla ,  Mitchell Kline

    IPC: G01F23/2962 ,  G01F23/296 ,  G01F25/20

    Abstract: Systems and methods for ultrasonic liquid level sensing. A circuit causes an ultrasonic transducer to transmit a sequence of ultrasonic pulses and receive a sequence of reflected signals. Each reflected signal includes at least one first reflection associated with at least one non-moveable surface and at least one second reflection associated with a moveable surface. A digital controller, for each reflected signal: determines at least one of a magnitude and a variance of the respective signal to form at least one output signal, identifies, in the at least one output signal, at least one first pulse indicative of the at least one non-moveable surface and at least one second pulse indicative of the moveable surface, and determines a distance of the moveable surface relative to the at least one non-moveable surface based on the identified first and second pulses.

    PROGRAMMABLE ULTRASONIC TRANSCEIVER
    4.
    发明申请
    PROGRAMMABLE ULTRASONIC TRANSCEIVER 审中-公开

    公开(公告)号：US20200328821A1

    公开(公告)日：2020-10-15

    申请号：US16908240

    申请日：2020-06-22

    Applicant: Chirp Microsystems, Inc.

    Inventor： Richard Przybyla ,  Mitchell Kline ,  David Horsley

    IPC: H04B11/00 ,  H04L27/36 ,  G06F8/65 ,  H04L9/30

    Abstract: An ultrasonic transceiver system includes a transmitter block, a receiver block, a state machine, a computer unit. The transmitter block contains circuitry configured to drive an ultrasound transducer. The receiver block contains circuitry configured to receive signals from the ultrasound transducer and convert the signals into digital data. The state machine is coupled to the transmitter and receiver blocks and contains circuitry configured to act as a controller for those blocks. The computing unit is coupled to the transmitter block, the receiver block, and the state machine and is configured to drive the transmitter block and process data received from the receiver block by executing instructions of a program. The program memory is coupled to the computing unit and is configured to store the program. The computing unit is configured to be reprogrammed with one or more additional programs stored in the program memory.

    Quadrature amplitude modulation circuitry for ultrasonic transducer
    5.
    发明授权
    Quadrature amplitude modulation circuitry for ultrasonic transducer 有权

    公开(公告)号：US11209533B2

    公开(公告)日：2021-12-28

    申请号：US15958363

    申请日：2018-04-20

    Applicant: Chirp Microsystems, Inc.

    Inventor： Mitchell Kline ,  Richard Przybyla ,  David Horsley

    IPC: G01S15/00 ,  G01S7/524 ,  B06B1/02 ,  G01S7/521 ,  G01S15/10 ,  G01S15/32 ,  G01S7/526

    Abstract: An ultrasonic transmitter system includes a digital controller, bandpass pulse-width modulator (BP-PWM) unit, a digital to analog converter (DAC), and an ultrasound transducer. The controller generates pulse width and phase reference signals. The BP-PWM configured receives these signals generates a pulse width modulation (PWM) output characterized by a pulse width and a phase based on the pulse width and phase reference signals. The DAC) receives the PWM output from the BP-PWM unit and generates an output characterized by the pulse width and phase. The ultrasonic transducer receives the output from the DAC and generates an output sound pressure in response to the output from the DAC. An amplitude of the RMS sound pressure depends on the pulse width of the output from the DAC.

    Ultrasonic input device
    7.
    发明授权
    Ultrasonic input device 有权

    公开(公告)号：US10712444B1

    公开(公告)日：2020-07-14

    申请号：US16165890

    申请日：2018-10-19

    Applicant: Chirp Microsystems, Inc.

    Inventor： Mitchell Kline ,  David Horsley ,  Richard J. Przybyla

    IPC: G01S15/00 ,  G01S15/89 ,  G01S15/66

    Abstract: An ultrasonic input includes two or more ultrasonic transceiver units having transducers separated from each other by a predetermined spacing and a processor coupled to the transceiver units. In some implementations one unit transmits while two receive and in other implementations one unit transmits and receives while the other just receives. The transmitter sends an ultrasonic pulse and first and second receivers receive echoes of the ultrasonic pulse from an object. The processor and/or transceiver units use first and second receive signals to determine first and second time-of-flight (ToF) measurements corresponding to times between transmitting an ultrasonic pulse and receiving an echo of the ultrasonic pulse.

    PROGRAMMABLE ULTRASONIC TRANSCEIVER
    8.
    发明申请
    PROGRAMMABLE ULTRASONIC TRANSCEIVER 审中-公开

    公开(公告)号：US20190089468A1

    公开(公告)日：2019-03-21

    申请号：US15920300

    申请日：2018-03-13

    Applicant: Chirp Microsystems, Inc.

    Inventor： Richard Przybyla ,  Mitchell Kline ,  David Horsley

    IPC: H04B11/00 ,  H04L9/30 ,  H04L9/08 ,  G06F8/65 ,  H04L29/08

    Abstract: An ultrasonic transceiver system includes a transmitter block, a receiver block, a state machine, a computer unit. The transmitter block contains circuitry configured to drive an ultrasound transducer. The receiver block contains circuitry configured to receive signals from the ultrasound transducer and convert the signals into digital data. The state machine is coupled to the transmitter and receiver blocks and contains circuitry configured to act as a controller for those blocks. The computing unit is coupled to the transmitter block, the receiver block, and the state machine and is configured to drive the transmitter block and process data received from the receiver block by executing instructions of a program. The program memory is coupled to the computing unit and is configured to store the program. The computing unit is configured to be reprogrammed with one or more additional programs stored in the program memory.

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