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公开(公告)号：US12203894B2
公开(公告)日：2025-01-21
申请号：US18507509
申请日：2023-11-13
Applicant: BFLY OPERATIONS, INC.
Inventor： Chao Chen , Youn-Jae Kook , Jihee Lee , Kailiang Chen , Leung Kin Chiu , Joseph Lutsky , Nevada J. Sanchez , Sebastian Schaetz , Hamid Soleimani
IPC: G01N29/24 , A61B8/00 , B06B1/02 , G01N29/30 , G01S7/52 , G01S15/89 , H03F1/32 , H03F3/45 , H03K5/24 , H03M3/00
Abstract: Aspects of the technology described herein relate to built-in self-testing (BIST) of circuitry (e.g., a pulser or receive circuitry) and/or transducers in an ultrasound device. A BIST circuit may include a transconductance amplifier coupled between a pulser and receive circuitry, a capacitor network coupled between a pulser and receive circuitry, and/or a current source couplable to the input terminal of receive circuitry to which a transducer is also couplable. The collapse voltages of transducers may be characterized using BIST circuitry, and a bias voltage may be applied to the membranes of the transducers based at least in part on their collapse voltages. The capacitances of transducers may also be measured using BIST circuitry and a notification may be generated based on the sets of measurements.
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2.发明公开公开(公告)号：US20240159714A1
公开(公告)日：2024-05-16
申请号：US18507509
申请日：2023-11-13
Applicant: BFLY OPERATIONS, INC.
Inventor： Chao Chen , Youn-Jae Kook , Jihee Lee , Kailiang Chen , Leung Kin Chiu , Joseph Lutsky , Nevada J. Sanchez , Sebastian Schaetz , Hamid Soleimani
CPC classification number: G01N29/2406 , A61B8/58 , G01N29/30 , G01S7/5205 , H03F1/3211 , H03F3/45475 , H03K5/24 , H03M3/458 , B06B1/0292
Abstract: Aspects of the technology described herein relate to built-in self-testing (BIST) of circuitry (e.g., a pulser or receive circuitry) and/or transducers in an ultrasound device. A BIST circuit may include a transconductance amplifier coupled between a pulser and receive circuitry, a capacitor network coupled between a pulser and receive circuitry, and/or a current source couplable to the input terminal of receive circuitry to which a transducer is also couplable. The collapse voltages of transducers may be characterized using BIST circuitry, and a bias voltage may be applied to the membranes of the transducers based at least in part on their collapse voltages. The capacitances of transducers may also be measured using BIST circuitry and a notification may be generated based on the sets of measurements.
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公开(公告)号：US11662447B2
公开(公告)日：2023-05-30
申请号：US16678830
申请日：2019-11-08
Applicant: BFLY OPERATIONS, INC.
Inventor： Kailiang Chen , Chao Chen , Keith G. Fife
CPC classification number: G01S7/52025 , G01S15/8906 , H03F3/187 , H03F3/45183 , H03F2200/129 , H03F2200/141 , H03F2200/228
Abstract: A variable-current trans-impedance amplifier (TIA) for an ultrasound device is described. The TIA may be coupled to an ultrasonic transducer to amplify an output signal of the ultrasonic transducer representing an ultrasound signal received by the ultrasonic transducer. During acquisition of the ultrasound signal by the ultrasonic transducer, one or more current sources in the TIA may be varied. The variable-current trans-impedance amplifier may include multiple stages, including a first stage having N-P transistor pairs configured to receive an input signal and produce a single-ended amplified signal.
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公开(公告)号：US11815492B2
公开(公告)日：2023-11-14
申请号：US17232100
申请日：2021-04-15
Applicant: BFLY Operations, Inc.
Inventor： Chao Chen , Youn-Jae Kook , Jihee Lee , Kailiang Chen , Leung Kin Chiu , Joseph Lutsky , Nevada J. Sanchez , Sebastian Schaetz , Hamid Soleimani
IPC: G01N29/24 , A61B8/00 , H03F1/32 , H03K5/24 , H03M3/00 , G01N29/30 , G01S7/52 , B06B1/02 , G01S15/89 , H03F3/45
CPC classification number: G01N29/2406 , A61B8/58 , G01N29/30 , G01S7/5205 , H03F1/3211 , H03F3/45475 , H03K5/24 , H03M3/458 , B06B1/0292 , G01N2291/02475 , G01S15/8915 , H03F2200/129 , H03F2203/45116
Abstract: Aspects of the technology described herein relate to built-in self-testing (BIST) of circuitry (e.g., a pulser or receive circuitry) and/or transducers in an ultrasound device. A BIST circuit may include a transconductance amplifier coupled between a pulser and receive circuitry, a capacitor network coupled between a pulser and receive circuitry, and/or a current source couplable to the input terminal of receive circuitry to which a transducer is also couplable. The collapse voltages of transducers may be characterized using BIST circuitry, and a bias voltage may be applied to the membranes of the transducers based at least in part on their collapse voltages. The capacitances of transducers may also be measured using BIST circuitry and a notification may be generated based on the sets of measurements.
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