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公开(公告)号：US09958537B2
公开(公告)日：2018-05-01
申请号：US15645771
申请日：2017-07-10
Applicant: Butterfly Network, Inc.
Inventor： Kailiang Chen , Tyler S. Ralston
IPC: A61B8/00 , G01S7/524 , G01S7/521 , H03K19/0175
CPC classification number: G01S7/524 , A61B8/4483 , A61B8/54 , G01S7/5202 , G01S7/5208 , G01S7/52096 , G01S7/521 , H03K19/017545
Abstract: Apparatus and methods are provided directed to a device, including at least one ultrasonic transducer, a multi-level pulser coupled to the at least one ultrasonic transducer; the multi-level pulser including a plurality of input terminals configured to receive respective input voltages, an output terminal configured to provide an output voltage, and a signal path between a first input terminal and the output terminal including a first transistor having a first conductivity type coupled to a first diode and, in parallel, a second transistor having a second conductivity type coupled to a second diode.
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32.发明申请公开(公告)号：US20170264307A1
公开(公告)日：2017-09-14
申请号：US15605469
申请日：2017-05-25
Applicant: Butterfly Network, Inc.
Inventor： Kailiang Chen , Tyler S. Ralston
CPC classification number: H03M1/002 , A61B8/4483 , A61B8/4494 , A61B8/54 , H03M1/125 , H03M1/462
Abstract: An ultrasound device including an asynchronous successive approximation analog-to-digital converter and method are provided. The device includes at least one ultrasonic transducer, a plurality of asynchronous successive-approximation-register (SAR) analog-to-digital converters (ADC) coupled to the at least one ultrasonic transducer, at least one asynchronous SAR in the plurality having a sample and hold stage, a digital-to-analog converter (DAC), a comparator, and control circuitry, wherein a DAC update event following at least one bit conversion is synchronized to a corresponding DAC update event of at least one other ADC in the plurality of ADCs.
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公开(公告)号：US20170163225A1
公开(公告)日：2017-06-08
申请号：US14957395
申请日：2015-12-02
Applicant: Butterfly Network, Inc.
Inventor： Kailiang Chen , Keith G. Fife , Nevada J. Sanchez , Andrew J. Casper , Tyler S. Ralston
CPC classification number: H03F3/16 , A61B5/6801 , A61B8/4444 , A61B8/5207 , G01S7/52025 , H03F1/086 , H03F3/45183 , H03F2200/408 , H03F2200/555 , H03F2203/45471 , H03F2203/45504 , H03F2203/45631 , H03F2203/45634 , H03F2203/45646 , H03F2203/45648 , H03F2203/45674 , H03F2203/45686 , H03F2203/45692 , H03F2203/45726
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.
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34.发明申请公开(公告)号：US20170157646A1
公开(公告)日：2017-06-08
申请号：US14957098
申请日：2015-12-02
Applicant: Butterfly Network, Inc.
Inventor： Susan A. Alie , Jaime Scott Zahorian , Kailiang Chen
IPC: B06B1/02
CPC classification number: B06B1/02 , B06B1/0292
Abstract: Electrical biasing of ultrasonic transducers of an ultrasound device is described. The ultrasonic transducers may be capacitive micromachined ultrasonic transducers (CMUTs). The ultrasonic transducers may be grouped together, with the different groups receiving different bias voltages. The bias voltages for the various groups of ultrasonic transducers may be selected to account for differences between the groups.
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公开(公告)号：US09492144B1
公开(公告)日：2016-11-15
申请号：US14957382
申请日：2015-12-02
Applicant: Butterfly Network, Inc.
Inventor： Kailiang Chen , Tyler S. Ralston
CPC classification number: G01S7/524 , A61B8/4483 , A61B8/54 , G01S7/5202 , G01S7/5208 , G01S7/52096 , G01S7/521 , H03K19/017545
Abstract: Apparatus and methods are provided directed to a device, including at least one ultrasonic transducer, a multi-level pulser coupled to the at least one ultrasonic transducer; the multi-level pulser including a plurality of input terminals configured to receive respective input voltages, an output terminal configured to provide an output voltage, and a signal path between a first input terminal and the output terminal including a first transistor having a first conductivity type coupled to a first diode and, in parallel, a second transistor having a second conductivity type coupled to a second diode.
Abstract translation: 设备和方法被提供给设备，包括至少一个超声波换能器，耦合到所述至少一个超声波换能器的多电平脉冲发生器; 所述多电平脉冲发生器包括被配置为接收相应的输入电压的多个输入端子，被配置为提供输出电压的输出端子以及第一输入端子和所述输出端子之间的信号路径，所述信号路径包括具有第一导电类型的第一晶体管 耦合到第一二极管，并联的是具有耦合到第二二极管的第二导电类型的第二晶体管。
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Patent Agency Ranking
公开(公告)号：US11061125B2
公开(公告)日：2021-07-13
申请号：US16035552
申请日：2018-07-13
Applicant: Butterfly Network, Inc.
Inventor： Kailiang Chen , Tyler S. Ralston , Keith G. Fife
IPC: H03K17/68 , G01S7/521 , H03K17/687 , G01S7/52 , G01S15/89
Abstract: Circuitry for ultrasound devices is described. A multilevel pulser is described, which can provide bipolar pulses of multiple levels. The multilevel pulser includes a pulsing circuit and pulser and feedback circuit. Symmetric switches are also described. The symmetric switches can be positioned as inputs to ultrasound receiving circuitry to block signals from the receiving circuitry.
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公开(公告)号：US10857567B2
公开(公告)日：2020-12-08
申请号：US16011776
申请日：2018-06-19
Applicant: Butterfly Network, Inc.
Inventor： Amandeep Singh , Kailiang Chen , Tyler S. Ralston
Abstract: An ultrasound device is describe in which analog ultrasonic transducer output signal are directly converted to digital signals. The ultrasound device includes microfabricated ultrasonic transducers directly coupled to a sigma delta analog-to-digital converter in some instances. The direct digital conversion may allow for omission of undesirable analog processing stages in the ultrasound circuitry chain. In some situations, the ADC may be integrated on the same substrate as the ultrasound transducer.
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38.发明申请公开(公告)号：US20190336111A1
公开(公告)日：2019-11-07
申请号：US16513677
申请日：2019-07-16
Applicant: Butterfly Network, Inc.
Inventor： Kailiang Chen , Keith G. Fife
Abstract: A time gain compensation (TGC) circuit for an ultrasound device includes a first amplifier having an integrating capacitor and a control circuit configured to generate a TGC control signal that controls an integration time of the integrating capacitor, thereby controlling a gain of the first amplifier. The integration time is an amount of time an input signal is coupled to the first amplifier before the input signal is isolated from the first amplifier.
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39.发明申请公开(公告)号：US20190142393A1
公开(公告)日：2019-05-16
申请号：US16243546
申请日：2019-01-09
Applicant: Butterfly Network, Inc.
Inventor： Kailiang Chen , Keith G. Fife
CPC classification number: A61B8/56 , A61B8/5207 , A61B8/54 , G01S7/52033 , H03M1/0617 , H03M1/1245 , H03M1/129
Abstract: A time gain compensation (TGC) circuit for an ultrasound device includes a first amplifier having an integrating capacitor and a control circuit configured to generate a TGC control signal that controls an integration time of the integrating capacitor, thereby controlling a gain of the first amplifier. The integration time is an amount of time an input signal is coupled to the first amplifier before the input signal is isolated from the first amplifier.
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公开(公告)号：US10175347B2
公开(公告)日：2019-01-08
申请号：US14957051
申请日：2015-12-02
Applicant: Butterfly Network, Inc.
Inventor： Kailiang Chen , Keith G. Fife , Tyler S. Ralston , Nevada J. Sanchez , Andrew J. Casper
Abstract: Methods and apparatus are described for implementing a coding scheme on ultrasound signals received by a plurality of ultrasonic transducers. The coding, and subsequent decoding, may allow for multiple ultrasonic transducers to be operated in a receive mode simultaneously while still differentiating the contribution of the individual ultrasonic transducers. Improved signal characteristics may result, including improved signal-to-noise ratio (SNR).
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