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公开(公告)号：US10856845B2
公开(公告)日：2020-12-08
申请号：US15763124
申请日：2016-10-04
申请人： Hitachi, Ltd.
发明人： Yusaku Katsube , Tatsuo Nakagawa , Yasuyuki Okuma , Yohei Nakamura , Takahide Terada , Shinya Kajiyama , Takuma Nishimoto , Yutaka Igarashi
摘要： An ultrasound diagnosis device includes: an ultrasound probe which transmits an ultrasound wave toward a examinee and receives a reflected wave from the examinee; and a main device which controls the transmitting and receiving of the ultrasound waves from the ultrasound probe and is operated to receive a receiving signal obtained by receiving the reflected wave from the examinee by the ultrasound probe, to generate an ultrasound image of the examinee, and to display the ultrasound image on a display screen, wherein the ultrasound probe includes a plurality of subarrays having a plurality of element circuits transmitting and receiving ultrasound signals and a plurality of reference voltage sources, and the plurality of subarrays and the plurality of reference voltage sources have a one-to-one correspondence.
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公开(公告)号：US11660076B2
公开(公告)日：2023-05-30
申请号：US16596917
申请日：2019-10-09
申请人： Hitachi, Ltd.
CPC分类号： A61B8/54 , A61B8/44 , G01S7/52077
摘要： A switch circuit connected to a transducer, a reception circuit connected to the switch circuit, a first switch element connected to a reception terminal provided between the switch circuit and the reception circuit, a first resistance element connected to a control terminal of the switch circuit, a second resistance element provided inside the reception circuit, and a second switch element provided inside the reception circuit are provided.
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公开(公告)号：US10517570B2
公开(公告)日：2019-12-31
申请号：US15313147
申请日：2014-06-13
申请人： HITACHI, LTD.
发明人： Shinya Kajiyama , Yutaka Igarashi , Toru Yazaki
摘要： A transmit receive switch circuit has a first MOSFET (MN1) and a second MOSFET (MN2), goes into a switch-off state at the time of transmission, and goes into a switch-on state at the time of reception. The first MOSFET (MN1) and the second MOSFET (MN2) are connected between an input terminal (SWIN) and an output terminal (SWOUT). The switch circuit includes a shunt circuit (SHNT) that is connected between a common gate (COMG) and a common source (COMS), the common gate being connected to the gates of the first and second MOSFETs, and the common source being connected to the sources of the first and second MOSFETs. When a signal having a negative voltage relative to a reference voltage is applied to the input terminal, a switch that temporarily turns on causes the shunt circuit to short-circuit the common gate and the common source.
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公开(公告)号：US11534144B2
公开(公告)日：2022-12-27
申请号：US16575527
申请日：2019-09-19
申请人： Hitachi, Ltd.
发明人： Shinya Kajiyama , Shinta Takano
摘要： An ultrasonic probe includes: a plurality of transducers that perform electro-acoustic conversion on transmission pulses applied thereto to generate a transmission beam of ultrasonic waves; and transmission/reception circuits that are provided so as to correspond to each of the plurality of transducers. The transmission/reception circuits set transmission/reception switching timings at which the ultrasonic waves are switched from transmission to reception independently for each of the plurality of transducers.
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公开(公告)号：US11191527B2
公开(公告)日：2021-12-07
申请号：US16361858
申请日：2019-03-22
申请人： Hitachi, Ltd.
发明人： Yutaka Igarashi , Shinya Kajiyama , Yohei Nakamura , Kengo Imagawa , Kazuhiro Amino , Takayuki Iwashita
摘要： Provided is a probe which transmits an ultrasonic wave to a diagnostic site and receives a reception signal which is a reflected wave. The probe includes: a plurality of transducers; a plurality of low-noise amplifying circuits respectively corresponding to the plurality of transducers; and a single differential converter which converts a control signal rising with the elapse of time to a first bias signal rising with the elapse of time and a second bias signal falling with the elapse of time to control the plurality of low-noise amplifying circuits, and the low-noise amplifying circuit includes an attenuator which attenuates: an electric signal from the transducer; a first amplifying circuit which sets the first bias signal as a bias and amplifies an output signal of the attenuator to be gradually increased with the elapse of time; a second amplifying circuit which sets the second bias signal as a bias and amplifies the output signal of the attenuator to be gradually reduced with the elapse of time; and a subtractor which subtracts an output of the first amplifying circuit and an output of the second amplifying circuit.
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公开(公告)号：US10809061B2
公开(公告)日：2020-10-20
申请号：US15756826
申请日：2016-01-27
申请人： Hitachi, Ltd.
发明人： Yuhua Zhang , Joan Giner , Shinya Kajiyama
IPC分类号： G01C19/5684 , G01C19/574 , G01C19/5677
摘要： Provided is a gyroscope including: a first inertial body that is displaceable in a first direction and a second direction perpendicular to the first direction; a second inertial body that is displaceable in the first direction and the second direction; a third inertial body that is displaceable in the first direction and the second direction; a fourth inertial body that is displaceable in the first direction and the second direction; a first connection unit that supports the first inertial body; a second connection unit that supports the second inertial body; a third connection unit that supports the third inertial body; a fourth connection unit that supports the fourth inertial body; and a connection body that is provided among the first inertial body, the second inertial body, the third inertial body, and the fourth inertial body and connects the first inertial body, the second inertial body, the third inertial body, and the fourth inertial body.
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公开(公告)号：US12115020B2
公开(公告)日：2024-10-15
申请号：US17229916
申请日：2021-04-14
申请人： HITACHI, LTD.
CPC分类号： A61B8/4494 , A61B8/4444 , B06B1/0207 , G01S15/8925 , G01S15/8927 , G01S15/8993 , A61B8/145 , B06B2201/76
摘要： Provided are a two-dimensional array ultrasonic probe and an addition circuit that switch an addition unit of a reception signal according to a reception channel of a main unit while preventing an increase in a chip area. The addition circuit includes, between addition output terminals that output an addition signal and transducer channels, wirings provided for each transducer channel row including the transducer channels arranged in a vertical direction on a subarray basis and coupled to the transducer channels of the corresponding transducer channel row, output switches provided for each of the wirings and coupled to the corresponding transducer channel row wiring, and an inter-output switch that couples wirings corresponding to transducer channel rows adjacent in the horizontal direction via the output switches.
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公开(公告)号：US11921241B2
公开(公告)日：2024-03-05
申请号：US17184730
申请日：2021-02-25
申请人： Hitachi, Ltd.
发明人： Yutaka Igarashi , Shinya Kajiyama , Kengo Imagawa
CPC分类号： G01S7/52033 , G01S7/52046 , G01S15/8925 , G01S7/5208
摘要： An ultrasonic probe including: a plurality of transducers; a plurality of low-noise amplifier circuits individually corresponding to the plurality of transducers, the plurality of low-noise amplifier circuits having a variable resistor feedback unit making a resistance value variable by an electrical signal inputted to a control terminal; and a control circuit; wherein the control circuit has a dummy circuit generating a bias voltage of a feedback unit of the low-noise amplifier circuit, and an adding circuit outputting an added signal of a bias voltage by the dummy circuit and a control signal increasing or decreasing with a lapse of time; and the plurality of low-noise amplifier circuits input an output of the adding circuit to the control terminal of the variable resistor feedback unit to perform variable control on a gain of the low-noise amplifier circuit.
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公开(公告)号：US11357476B2
公开(公告)日：2022-06-14
申请号：US16361406
申请日：2019-03-22
申请人： Hitachi, Ltd.
发明人： Yutaka Igarashi , Shinya Kajiyama , Yohei Nakamura , Kengo Imagawa , Kazuhiro Amino , Takayuki Iwashita
IPC分类号： A61B8/00 , B06B1/02 , B06B3/00 , H03F3/45 , A61B8/08 , G01S7/52 , A61B8/13 , A61B8/06 , G01S15/89
摘要： Provided is a probe which transmits an ultrasonic wave to a diagnostic site and receives a reception signal which is a reflected wave. The probe includes: a plurality of transducers; a plurality of low-noise amplifying circuits respectively corresponding to the plurality of transducers; and a single differential converter which converts a control signal rising with the elapse of time to a first bias signal rising with the elapse of time and a second bias signal falling with the elapse of time to control the plurality of low-noise amplifying circuits, and the low-noise amplifying circuit includes: an attenuator which attenuates an electric signal from the transducer; a first amplifying circuit which sets the first bias signal as a bias and amplifies an output signal of the attenuator to be gradually increased with the elapse of time; a second amplifying circuit which sets the second bias signal as a bias and amplifies the output signal of the attenuator to be gradually reduced with the elapse of time; and a subtractor which subtracts an output of the first amplifying circuit and an output of the second amplifying circuit.
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公开(公告)号：US11284859B2
公开(公告)日：2022-03-29
申请号：US16361406
申请日：2019-03-22
申请人： Hitachi, Ltd.
发明人： Yutaka Igarashi , Shinya Kajiyama , Yohei Nakamura , Kengo Imagawa , Kazuhiro Amino , Takayuki Iwashita
IPC分类号： A61B8/00 , B06B1/02 , B06B3/00 , H03F3/45 , A61B8/08 , G01S7/52 , A61B8/13 , A61B8/06 , G01S15/89
摘要： Provided is a probe which transmits an ultrasonic wave to a diagnostic site and receives a reception signal which is a reflected wave. The probe includes: a plurality of transducers; a plurality of low-noise amplifying circuits respectively corresponding to the plurality of transducers; and a single differential converter which converts a control signal rising with the elapse of time to a first bias signal rising with the elapse of time and a second bias signal falling with the elapse of time to control the plurality of low-noise amplifying circuits, and the low-noise amplifying circuit includes: an attenuator which attenuates an electric signal from the transducer; a first amplifying circuit which sets the first bias signal as a bias and amplifies an output signal of the attenuator to be gradually increased with the elapse of time; a second amplifying circuit which sets the second bias signal as a bias and amplifies the output signal of the attenuator to be gradually reduced with the elapse of time; and a subtractor which subtracts an output of the first amplifying circuit and an output of the second amplifying circuit.
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