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1. 发明公开

US20240179463A1 ACTIVE NOISE CONTROL DEVICE, ACTIVE NOISE CONTROL METHOD, AND ACTIVE NOISE CONTROL PROGRAM 审中-公开
公开(公告)号：US20240179463A1
公开(公告)日：2024-05-30
申请号：US18283159
申请日：2022-02-18
申请人： TRANSTRON INC.
发明人： Ryota OKAWA
IPC分类号： H04R3/04
CPC分类号： H04R3/04 , H04R2400/01
摘要： An active noise control device includes an adaptive filter that generates a control signal based on a vibration frequency generated by a vibration source and sequentially updating the adaptive filter, a reference signal generation device that generates a reference signal, an amplitude characteristic calculation device that acquires an acoustic characteristic including amplitude and phase information, the acoustic characteristic being an acoustic characteristic of a secondary path between a speaker and a microphone and calculating an amplitude characteristic of the secondary path, a smoothed signal generation device having a low-pass filter, a correction coefficient calculation device that calculates a correction coefficient according to a frequency, an adaptive filter update device that updates the adaptive filter by subtracting an update term including the correction coefficient from a first adaptive filter coefficient that is an immediately preceding adaptive filter coefficient, and a control signal generation device that generates the control signal.

2. 发明申请

US20230063634A1 ENGINE TEST METHOD, COMPUTER-READABLE RECORDING MEDIUM, AND ENGINE TEST APPARATUS 有权
公开(公告)号：US20230063634A1
公开(公告)日：2023-03-02
申请号：US17891624
申请日：2022-08-19
申请人： TRANSTRON INC.
发明人： Masatoshi OGAWA , Takuma DEGAWA
IPC分类号： G01M15/05
摘要： An engine test method that causes a computer to execute a process including, acquiring, by a processer on the computer, a first test pattern in which an operation variable that is used for an engine test is changed in time series, inputting, based on the first test pattern, a first operation variable to a mathematical model that represents a time series response of an engine obtained by inputting a test pattern as a simulation of the engine test, monitoring, as a first monitoring parameter of engine abnormality, at least one of an air excess ratio, pressure and temperature of an intake manifold, pressure and temperature of an exhaust manifold, and a maximum cylinder pressure rise rate that are obtained by inputting the first operation variable to the mathematical model, holding, when the first monitoring parameter exceeds a first threshold value, the first operation variable until the first monitoring parameter is less than the first threshold value, creating, a history of the first operation variable in the simulation as a second test pattern, monitoring, as a second monitoring parameter, at least one of the air excess ratio, the pressure and the temperature of the intake manifold, the pressure and the temperature of the exhaust manifold, and the maximum cylinder pressure rise rate that are obtained by inputting a second operation variable to a real engine based on the second test pattern, holding, when the second monitoring parameter exceeds a second threshold value, the second operation variable until the second monitoring parameter is less than the second threshold value, and acquiring, time series data of the second operation variable and a controlled variable.

3. 发明授权

US11039245B2 Echo suppression device, echo suppression method and echo suppression program 有权
公开(公告)号：US11039245B2
公开(公告)日：2021-06-15
申请号：US16605252
申请日：2018-05-15
申请人： TRANSTRON INC.
发明人： Yuki Satomi
IPC分类号： H04R3/04 , G10L21/0232 , G10L25/51 , G10L21/0216 , G10L21/0208
摘要： A double-talk state can be accurately detected, and based on a detection result, echo can be appropriately suppressed. When a sound is output from a speaker and only the output sound is input to a microphone, a comparison is made, for each of different frequency bands, between a frequency mask generated based on a power spectrum or an amplitude spectrum for a learning signal transmitted through a transmitting signal path and a value of a power spectrum or an amplitude spectrum for an input signal input from the microphone, to detect whether there is a double-talk state. In a case of detecting that no signal is being transmitted through the transmitting signal path and that a signal is being transmitted through the receiving signal path, an echo suppressor is used to execute processing of suppressing an echo in the input signal.

4. 发明申请

US20210144474A1 ECHO SUPPRESSION DEVICE, ECHO SUPPRESSION METHOD AND ECHO SUPPRESSION PROGRAM 有权
公开(公告)号：US20210144474A1
公开(公告)日：2021-05-13
申请号：US16605252
申请日：2018-05-15
申请人： TRANSTRON INC.
发明人： Yuki SATOMI
IPC分类号： H04R3/04 , G10L21/0232 , G10L25/51
摘要： A double-talk state can be accurately detected, and based on a detection result, echo can be appropriately suppressed. When a sound is output from a speaker and only the output sound is input to a microphone, a comparison is made, for each of different frequency bands, between a frequency mask generated based on a power spectrum or an amplitude spectrum for a learning signal transmitted through a transmitting signal path and a value of a power spectrum or an amplitude spectrum for an input signal input from the microphone, to detect whether there is a double-talk state. In a case of detecting that no signal is being transmitted through the transmitting signal path and that a signal is being transmitted through the receiving signal path, an echo suppressor is used to execute processing of suppressing an echo in the input signal.

5. 发明申请

US20200217259A1 INJECTOR INJECTION AMOUNT CONTROL DEVICE, INJECTOR INJECTION AMOUNT CONTROL METHOD, AND STORAGE MEDIUM 审中-公开
公开(公告)号：US20200217259A1
公开(公告)日：2020-07-09
申请号：US16824593
申请日：2020-03-19
申请人： TRANSTRON INC.
发明人： Masatoshi OGAWA , Hiromitsu SONEDA
IPC分类号： F02D41/04 , F02D41/40 , F02D41/34 , F02D45/00
摘要： An injector injection amount control device includes: acquiring a measured value of a crank angle that is a rotation angle of a crankshaft of an engine, determining instruction injection amounts of fuel from respective injectors, the respective injectors corresponding to a plurality of cylinders of the engine, estimating a torque arising in each of the plurality of cylinders of the engine based on a non-linear Kalman filter employing an error between the acquired measured value of the crank angle and an estimate value of the crank angle, and correcting the instruction injection amounts for the respective injectors corresponding to the plurality of cylinders such that each of the plurality of estimated torques falls within the same range.

6. 发明授权

US10346692B2 Malfunction diagnosis apparatus 有权
公开(公告)号：US10346692B2
公开(公告)日：2019-07-09
申请号：US15202527
申请日：2016-07-05
申请人： TRANSTRON INC
发明人： Yoshiaki Hishinuma , Naoyuki Urushizaki , Hirokazu Sugita , Kazuhiko Kobayashi
IPC分类号： G06K9/00 , B60W40/00 , G06F3/00 , G06F11/00 , G06T7/90 , H04N17/00 , H04N5/20 , H04N5/235
摘要： This malfunction diagnosis apparatus detects a line on a road surface by distinguishing the line from an asphalt surface other than the line. The malfunction diagnosis apparatus sets a first area corresponding to the line and a second area corresponding to the asphalt surface using a first image captured while the line is detected. The malfunction diagnosis apparatus calculates a first brightness in the first area and a second brightness in the second area using a second image captured while the vehicle is cruising and the line is not detected. Further, the malfunction diagnosis apparatus diagnoses the malfunction based on at least one of the first brightness and the second brightness.

7. 发明授权

US09045140B2 Coasting control device 有权
标题翻译：惯性控制装置
公开(公告)号：US09045140B2
公开(公告)日：2015-06-02
申请号：US13812935
申请日：2011-07-07
申请人： Nobuyuki Iwao , Yasushi Yamamoto , Kazuhiko Kobayashi , Hiroyuki Arai , Kouhei Takama
发明人： Nobuyuki Iwao , Yasushi Yamamoto , Kazuhiko Kobayashi , Hiroyuki Arai , Kouhei Takama
IPC分类号： B60W10/02 , B60W30/18 , B60T8/172 , B60W10/06 , F02D29/00 , F16D48/06 , F16D48/02
CPC分类号： B60W30/18072 , B60T8/172 , B60T2201/09 , B60T2210/12 , B60W10/02 , B60W10/06 , B60W2030/1809 , B60W2510/0283 , B60W2510/0604 , B60W2540/10 , B60W2540/106 , B60W2550/148 , F02D29/00 , F16D48/066 , F16D2048/023 , F16D2048/0254 , F16D2500/3114 , F16D2500/3125 , F16D2500/51 , F16D2500/70424 , F16D2500/7105 , Y02T10/76
摘要： A coasting control device capable of avoiding coasting control during running on road having a small coefficient of friction between a tire and a road surface (“low μ roads”) includes a low μ road running recognition unit which recognizes that a vehicle is running on a low μ road and a unit for prohibiting coasting control during low μ road running when the low μ road running recognition unit recognizes that the vehicle is running on a low μ road.
摘要翻译：能够避免在轮胎和路面之间具有小摩擦系数的路面上行驶时的惯性控制装置（“低μ路”）包括低μ道路行驶识别单元，其识别车辆在低μ路和低μ路运行识别单元识别车辆在低μ路上行驶时，在低μ路运行期间禁止惯性控制的单元。

8. 发明授权

US6094976A Method of specifying and diagnosing abnormalities in partially-connected clutch stroke levels 失效
标题翻译：指定和诊断部分接合离合器行程级别异常的方法
公开(公告)号：US6094976A
公开(公告)日：2000-08-01
申请号：US260572
申请日：1999-03-01
申请人： Masahiko Hayashi , Junichi Imai , Kazuhiko Kobayashi , Hiroyuki Arai
发明人： Masahiko Hayashi , Junichi Imai , Kazuhiko Kobayashi , Hiroyuki Arai
IPC分类号： F16D25/12 , F16D43/08 , F16D48/06 , F16D48/08 , G01M15/00
CPC分类号： F16D48/06 , F16D48/066 , F16D48/08 , F16D2500/1026 , F16D2500/10412 , F16D2500/1045 , F16D2500/3026 , F16D2500/50245 , F16D2500/5108
摘要： A method for automatic control of a friction clutch (1) in a vehicle, which clutch is designed to be disengaged and engaged by a clutch actuator (3) under automatic control. An initial partially engaged clutch stroke position (Q1) and an initial clutch stroke position (P1) at which fluid pressure in the clutch actuator reaches a prescribed value are detected to obtain a difference (R1) between said two clutch stroke positions prior to initiation of automatic clutch control. The friction clutch wears as it is used. Therefore, both of the partially engaged clutch stroke position and the clutch stroke position attaining the prescribed fluid pressure value change while the automatic clutch engagement/disengagement control is being performed. However, the difference between these two clutch stroke positions does not change. A current clutch stroke position attaining the predetermined fluid pressure is only detected during the automatic clutch control, and a current partially engaged clutch stroke position (Q2) is determined by adding the difference (R1) to the detected clutch stroke position (P2).
摘要翻译：一种用于自动控制车辆中的摩擦离合器（1）的方法，该离合器被设计成在自动控制下由离合器致动器（3）分离和接合。检测初始部分接合的离合器行程位置（Q1）和离合器致动器中的流体压力达到规定值的初始离合器行程位置（P1），以获得在起动前的所述两个离合器行程位置之间的差（R1）自动离合器控制摩擦离合器随着使用而磨损。因此，在执行自动离合器接合/分离控制的同时，达到规定的流体压力值的部分接合的离合器行程位置和离合器行程位置都改变。但是，这两个离合器行程位置之间的差别不会改变。在自动离合器控制期间仅检测到达到预定流体压力的当前离合器行程位置，并且通过将差值（R1）加到检测到的离合器行程位置（P2）来确定当前部分啮合的离合器行程位置（Q2）。

9. 发明授权

US11375066B2 Echo suppression device, echo suppression method, and echo suppression program 有权
公开(公告)号：US11375066B2
公开(公告)日：2022-06-28
申请号：US16973930
申请日：2019-06-05
申请人： TRANSTRON INC.
发明人： Yuki Satomi
IPC分类号： H04M9/08 , H04B3/20
摘要： An echo is allowed to be effectively removed while a processing load on an arithmetic device is reduced. When a magnitude of a reference signal transmitted to a speaker is equal to or greater than a first threshold, a learning algorithm using nonlinear processing is selected. When the magnitude of the reference signal is smaller than the first threshold, a learning algorithm using linear processing is selected. The echo is learnt using the selected learning algorithm to remove an echo included in an input signal picked up by a microphone based on a learning result.

10. 发明申请

US20220165286A1 ECHO SUPPRESSION DEVICE, ECHO SUPPRESSION METHOD, AND ECHO SUPPRESSION PROGRAM 有权
公开(公告)号：US20220165286A1
公开(公告)日：2022-05-26
申请号：US17437665
申请日：2020-03-17
申请人： TRANSTRON INC.
发明人： Yuki SATOMI
IPC分类号： G10L21/0208 , H04B3/23
摘要： A non-linear echo is allowed to be suppressed and voice deterioration is allowed to be suppressed. An echo suppression device for suppressing an echo generated by inputting a voice signal output from a speaker to a microphone includes a compressor on a receiving signal path for transmitting a signal of a receiving signal to the speaker. When a double-talk state has been detected, the compressor performs a compression process on a signal greater than a first threshold among the receiving signals.

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