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公开(公告)号：US12192701B2
公开(公告)日：2025-01-07
申请号：US17887044
申请日：2022-08-12
Inventor： Hiromichi Kato , Nobuyuki Otake , Takashi Inoue , Takayuki Shibata
IPC: H04R17/00
Abstract: An ultrasonic generator has a speaker element having a first resonance frequency and a speaker element having a second resonance frequency. The first resonance frequency and the second resonance frequency are adjacent resonance frequencies in the speaker. The distance between the elements is set so that the sound from the first speaker element and the sound from the second speaker element have a predetermined relationship at a target position. The target position is two or more positions on the object located in the target space. A predetermined relationship is a relationship in which a sound from the first speaker element and a sound from the second speaker element strengthen each other at an intermediate frequency between the first resonance frequency and the second resonance frequency.
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公开(公告)号：US20220268859A1
公开(公告)日：2022-08-25
申请号：US17675109
申请日：2022-02-18
Applicant: DENSO CORPORATION
Inventor： Yuki Anno , Takayuki Shibata , Kazuhiro Oyama
IPC: G01R33/032 , H01F7/20
Abstract: A magnetic field generator includes: an upper layer coil composed of a first conductive material and forming a loop circuit having a coil portion; a lower layer coil composed of a second conductive material and forming a loop circuit having a coil portion arranged opposite to the coil portion of the upper layer coil at a predetermined distance; and a substrate supporting the upper layer coil and the lower layer coil and having a dielectric material between the upper layer coil and the lower layer coil. High-frequency currents of opposite phases are passed through the upper layer coil and the lower layer coil, respectively, and a length per loop of the coil portion in the upper layer coil and the coil portion in the lower layer coil is matched to one wavelength of the high-frequency current.
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公开(公告)号：US11860247B2
公开(公告)日：2024-01-02
申请号：US18174140
申请日：2023-02-24
Applicant: DENSO CORPORATION
Inventor： Yuki Anno , Takayuki Shibata , Kazuhiro Oyama
IPC: G01R33/032 , H01F7/20 , H01F27/28
CPC classification number: G01R33/032 , H01F7/20 , H01F27/28
Abstract: A magnetic field generator includes: an upper layer resonance coil composed of a first conductive material and forming a loop circuit having a coil portion; a lower layer coil composed of a second conductive material and forming a loop circuit having a coil portion arranged opposite to the coil portion of the upper layer coil at a predetermined distance; and a substrate supporting the upper layer coil and the lower layer coil and having a dielectric material between the upper layer coil and the lower layer coil. A high-frequency current is supplied to the lower layer coil and a high-frequency current having a phase opposite to that of the high frequency current supplied to the lower layer coil flows through the upper layer coil. A length per loop of the coil portion in the upper layer coil and the coil portion in the lower layer coil is matched to one wavelength of the high-frequency current.
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Patent Agency Ranking
公开(公告)号：US20230221384A1
公开(公告)日：2023-07-13
申请号：US18174140
申请日：2023-02-24
Applicant: DENSO CORPORATION
Inventor： Yuki Anno , Takayuki Shibata , Kazuhiro Oyama
IPC: H01F7/20 , G01R33/032 , H01F27/28
CPC classification number: H01F7/20 , G01R33/032 , H01F27/28
Abstract: A magnetic field generator includes: an upper layer coil composed of a first conductive material and forming a loop circuit having a coil portion; a lower layer coil composed of a second conductive material and forming a loop circuit having a coil portion arranged opposite to the coil portion of the upper layer coil at a predetermined distance; and a substrate supporting the upper layer coil and the lower layer coil and having a dielectric material between the upper layer coil and the lower layer coil. High-frequency currents of opposite phases are passed through the upper layer coil and the lower layer coil, respectively, and a length per loop of the coil portion in the upper layer coil and the coil portion in the lower layer coil is matched to one wavelength of the high-frequency current.
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公开(公告)号：US10247633B2
公开(公告)日：2019-04-02
申请号：US15103032
申请日：2015-01-12
Applicant: DENSO CORPORATION
Inventor： Takayuki Shibata , Kouji Ooya
Abstract: In a combustion pressure sensor having built-in charge amplifier, signal line overheating and deterioration of detection accuracy is restricted. The combustion pressure sensor includes a sensor body that includes a piezoelectric element having one end connected to chassis ground through a housing and detects pressure in a combustion chamber of engine, and a charge amplifier that includes at least a voltage converting unit converting output of the sensor body into voltage signal and a reference voltage generating unit generating reference voltage supplied to the voltage converting unit and operates on power supplied from a signal processing unit disposed outside. The reference voltage generating unit includes a voltage generating circuit having a constant current circuit and a resistor connected in series. The voltage generating circuit has one end connected to power line extending from the signal processing unit, and the other end connected to the end of the piezoelectric element.
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公开(公告)号：US08908468B2
公开(公告)日：2014-12-09
申请号：US13625040
申请日：2012-09-24
Applicant: DENSO Corporation
Inventor： Takayuki Shibata
CPC classification number: G01K11/265
Abstract: In an ON state, a first switch generates a transmission signal by pulse modulating a carrier. A SAW sensor outputs a reception signal after a delay from receipt of the transmission signal. In an input state, a second switch receives and transmits the transmission signal to the SAW sensor. In an output state, the second switch receives and outputs the reception signal. A SAW delay element outputs a local signal after the delay from receipt of the transmission signal. A mixer generates a synchronous detection signal by mixing the reception and local signals. During the input state of the second switch, the first switch switches from the OFF state, to the ON state, and back to the OFF state. The second switch switches from the input state to the output state before the delay after the first switch switches back to the OFF state.
Abstract translation: 在接通状态下，第一开关通过脉冲调制载波来产生发送信号。 SAW传感器在接收到发送信号的延迟之后输出接收信号。 在输入状态下，第二开关接收发送信号到SAW传感器。 在输出状态下，第二开关接收并输出接收信号。 SAW延迟元件在接收到发送信号的延迟之后输出本地信号。 混频器通过混合接收和本地信号来产生同步检测信号。 在第二开关的输入状态期间，第一开关从OFF状态切换到ON状态并返回OFF状态。 在第一开关切换回到OFF状态之后，第二开关从延迟之前的输入状态切换到输出状态。
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公开(公告)号：US20130077666A1
公开(公告)日：2013-03-28
申请号：US13625040
申请日：2012-09-24
Applicant: DENSO CORPORATION
Inventor： Takayuki Shibata
IPC: H04B17/00
CPC classification number: G01K11/265
Abstract: In an ON state, a first switch generates a transmission signal by pulse modulating a carrier. A SAW sensor outputs a reception signal after a delay from receipt of the transmission signal. In an input state, a second switch receives and transmits the transmission signal to the SAW sensor. In an output state, the second switch receives and outputs the reception signal. A SAW delay element outputs a local signal after the delay from receipt of the transmission signal. A mixer generates a synchronous detection signal by mixing the reception and local signals. During the input state of the second switch, the first switch switches from the OFF state, to the ON state, and back to the OFF state. The second switch switches from the input state to the output state before the delay after the first switch switches back to the OFF state.
Abstract translation: 在接通状态下，第一开关通过脉冲调制载波来产生发送信号。 SAW传感器在接收到发送信号的延迟之后输出接收信号。 在输入状态下，第二开关接收发送信号到SAW传感器。 在输出状态下，第二开关接收并输出接收信号。 SAW延迟元件在接收到发送信号的延迟之后输出本地信号。 混频器通过混合接收和本地信号来产生同步检测信号。 在第二开关的输入状态期间，第一开关从OFF状态切换到ON状态并返回OFF状态。 在第一开关切换回OFF状态之后，第二开关从延迟之前的输入状态切换到输出状态。
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公开(公告)号：US11686785B2
公开(公告)日：2023-06-27
申请号：US17675109
申请日：2022-02-18
Applicant: DENSO CORPORATION
Inventor： Yuki Anno , Takayuki Shibata , Kazuhiro Oyama
IPC: G01R33/032 , H01F7/20
CPC classification number: G01R33/032 , H01F7/20
Abstract: A magnetic field generator includes: an upper layer coil composed of a first conductive material and forming a loop circuit having a coil portion; a lower layer coil composed of a second conductive material and forming a loop circuit having a coil portion arranged opposite to the coil portion of the upper layer coil at a predetermined distance; and a substrate supporting the upper layer coil and the lower layer coil and having a dielectric material between the upper layer coil and the lower layer coil. High-frequency currents of opposite phases are passed through the upper layer coil and the lower layer coil, respectively, and a length per loop of the coil portion in the upper layer coil and the coil portion in the lower layer coil is matched to one wavelength of the high-frequency current.
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