Patents by Inventor Toshio Inoue
Toshio Inoue has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20250054484Abstract: An active noise reduction system includes a canceling sound output device configured to output a canceling sound, an error microphone configured to generate an error signal, and a controller configured to control the canceling sound output device based on the error signal. The controller includes a control signal generation unit including a control filter configured to generate a control signal for controlling the canceling sound output device, and a sound field learning unit including a secondary path filter that represents an estimation value of a transfer function of a secondary path from the canceling sound output device to the error microphone, the control filter and the secondary path filter are configured to be adaptively updated, and the controller is configured to differentiate a timing of an adaptive update of the control filter and a timing of an adaptive update of the secondary path filter.Type: ApplicationFiled: August 5, 2024Publication date: February 13, 2025Inventors: Xun WANG, Toshio INOUE
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Publication number: 20250054485Abstract: An active noise reduction system includes a canceling sound output device configured to output a canceling sound, an error microphone configured to generate an error signal, and a controller configured to control the canceling sound output device based on the error signal. The controller includes a control filter configured to generate a control signal for controlling the canceling sound output device, and a secondary path filter that represents an estimation value of a transfer function of a secondary path from the canceling sound output device to the error microphone. The active noise reduction system further includes a reference microphone provided separately from the error microphone, the reference microphone is configured to generate a determination signal based on at least a noise, and the controller is configured to determine whether the transfer function of the secondary path has changed based on the error signal and the determination signal.Type: ApplicationFiled: August 5, 2024Publication date: February 13, 2025Inventors: Xun WANG, Toshio INOUE
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Publication number: 20250029592Abstract: An active noise reduction system includes a canceling sound output device configured to output a canceling sound for canceling a noise, an error microphone configured to generate an error signal based on the noise and the canceling sound, and a controller configured to control the canceling sound output device based on the error signal, wherein the controller is configured to calculate a canceling sound propagation distance that is a distance from the canceling sound output device to the error microphone, and suppress a change in the canceling sound based on the canceling sound propagation distance.Type: ApplicationFiled: July 10, 2024Publication date: January 23, 2025Inventors: Xun WANG, Toshio INOUE
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Publication number: 20250022454Abstract: An active noise reduction system of an IMC type includes a canceling sound output device, an error microphone, and a controller. The error microphone is configured to generate an error signal. The controller includes a control filter and a secondary path filter. The secondary path filter is configured to generate a canceling sound estimation signal. The control filter is configured to generate a control signal based on a reference signal generated based on both the error signal and the canceling sound estimation signal. The controller further includes a primary path filter configured to generate a noise estimation signal based on the reference signal. The secondary path filter and the primary path filter are configured to be adaptively updated based on a virtual error signal generated based on both the reference signal and the noise estimation signal.Type: ApplicationFiled: July 10, 2024Publication date: January 16, 2025Inventors: Xun WANG, Toshio INOUE
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Patent number: 12159614Abstract: An active noise reduction system includes a canceling sound output device configured to output a canceling sound for canceling a noise, a noise signal generator configured to generate noise signals based on the noise, and a controller configured to control the canceling sound output device based on the noise signals, wherein the controller is configured to acquire buffer data in which the noise signals are stored in a time series, generate a plurality of divided data by dividing the buffer data, calculate a correlation value of the buffer data based on the plurality of divided data, detect presence/absence of disturbance mixed in the buffer data based on the correlation value, and switch control over the canceling sound output device according to the presence/absence of the disturbance mixed in the buffer data.Type: GrantFiled: March 22, 2023Date of Patent: December 3, 2024Assignee: HONDA MOTOR CO., LTD.Inventors: Xun Wang, Toshio Inoue
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Patent number: 12125467Abstract: An active noise reduction system includes a reference signal generator configured to generate a reference signal, a canceling sound generator configured to generate a canceling sound, an error detector configured to detect an error between a noise and the canceling sound and generate an error signal corresponding to the error, and a controller configured to control the canceling sound generator based on the reference signal and the error signal, wherein the controller is configured to update an estimation value of acoustic characteristics in an internal space of a mobile body based on the reference signal and the error signal, estimate a head position of an occupant in the internal space based on the updated estimation value of the acoustic characteristics, and update a control filter based on the estimated head position of the occupant, the control filter being a filter for controlling the canceling sound generator.Type: GrantFiled: February 15, 2023Date of Patent: October 22, 2024Assignee: HONDA MOTOR CO., LTD.Inventors: Xun Wang, Toshio Inoue
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Publication number: 20240274112Abstract: An active noise canceller device includes: a reference signal generation device, generating a reference signal corresponding to a noise; a cancellation sound output device, outputting cancellation sound for canceling the noise; an error detection device, detecting an error between the noise and the cancellation sound and generating an error signal corresponding to the error; and a control device, controlling the cancellation sound output device that further including: a reference signal correction part, correcting the reference signal; a noise estimation part, estimating a sound pressure; a sound pressure estimation part, estimating the sound pressure within an object range of the cancellation sound that cancels the noise; and a control filter, controlling the cancellation sound. The active noise canceller device updates the control filter based on the reference signal corrected by the reference signal correction part and a sound pressure estimated value of the sound pressure estimation part.Type: ApplicationFiled: December 7, 2023Publication date: August 15, 2024Applicant: Honda Motor Co., Ltd.Inventors: Xun WANG, Toshio INOUE
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Publication number: 20240274116Abstract: An active noise canceller device includes: a cancellation sound output device, outputting a cancellation sound for a noise; noise microphones, generating noise signals; a control device, controlling the cancellation sound output device based on the noise signals. The control device executes: obtaining noise signals, selecting reference signals corresponding to the noise and an error signal corresponding to an error of the noise and the cancellation sound from the noise signals, generating a correction reference signal, and generating a control signal. The control device includes: a control filter, generating the control signal of the control device; a primary path filter, generating a noise estimation signal from the reference signals; a secondary path filter, generating a cancellation sound estimation signal from the correction reference signal; and a stability judgment part, judging a stability of the cancellation sound from the control filter, the primary path filter, and the secondary path filter.Type: ApplicationFiled: December 15, 2023Publication date: August 15, 2024Applicant: Honda Motor Co., Ltd.Inventors: Xun WANG, Toshio INOUE
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Publication number: 20240274117Abstract: An active sound generation device is proposed to generate a sound effect in a vehicle interior. The active sound generation device includes: a low sampling rate generation part, generating a low sampling rate signal by lowering a sampling rate; a processing frequency setting part, setting the sampling rate of the low sampling rate generation part; a high sampling rate generation part, amplifying a sampling rate of the low sampling rate signal to generate a high sampling rate signal as the sound effect; and a speaker, outputting the sound effect.Type: ApplicationFiled: January 30, 2024Publication date: August 15, 2024Applicant: Honda Motor Co., Ltd.Inventors: Xun WANG, Toshio INOUE
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Publication number: 20240209916Abstract: An active vibration control device includes: an outer hollow cylinder; an inner hollow cylinder arranged radially inside the outer hollow cylinder; a magnet coil (magnetic field generator) to generate a magnetic field; a magnetic material to provide a magnetic circuit by the magnetic field; a first liquid chamber filled with magneto-viscoelastic fluid; and a second liquid chamber adjacent to the first liquid chamber and filled with liquid, wherein the magnet coil, the magnetic material, the first liquid chamber, and the second liquid chamber are provided radially between the inner hollow cylinder and the outer hollow cylinder, the first liquid chamber is separated from the second liquid chamber by a flexible member, and the first liquid chamber has an orifice, through which the magnetic circuit is provided.Type: ApplicationFiled: October 25, 2023Publication date: June 27, 2024Inventors: Yuho ITO, Toshio INOUE
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Publication number: 20240161724Abstract: An active noise control device controls a speaker on the basis of an error signal outputted from a detector that has detected, at a control point, a synthesized sound of a noise transmitted from a vibration source and a cancellation sound outputted from the speaker in order to cancel out the noise, and is provided with a control signal generation unit that generates a control signal for controlling the speaker by performing signal processing on a reference signal by a control filter corresponding to an error signal buffered at the end of an input buffer for buffering error signals on a time-series basis.Type: ApplicationFiled: March 26, 2021Publication date: May 16, 2024Inventors: Toshio INOUE, Xun WANG
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Patent number: 11970990Abstract: A control apparatus for a vehicle that includes a drive wheel, an engine and an automatic transmission configured to transmit power from the engine toward the drive wheel. When the automatic transmission is shifted, the control apparatus is configured to execute a shifting-time torque-down control by using an ignition retard method of retarding an ignition timing of the engine or a fuel cut method of restricting fuel supply to the engine. The control apparatus is configured to estimate a temperature of a predetermined portion of an exhaust pipe of the engine in a case in which the shifting-time torque-down control is executed by using the ignition retard method, and to execute the shifting-time torque-down control by using the fuel cut method when an estimated value of the temperature of the predetermined portion of the exhaust pipe is not lower than a predetermined upper-limit temperature value.Type: GrantFiled: August 15, 2023Date of Patent: April 30, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Toshio Inoue
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Publication number: 20240117778Abstract: A control apparatus for a vehicle that includes a drive wheel, an engine and an automatic transmission configured to transmit power from the engine toward the drive wheel. When the automatic transmission is shifted, the control apparatus is configured to execute a shifting-time torque-down control by using an ignition retard method of retarding an ignition timing of the engine or a fuel cut method of restricting fuel supply to the engine. The control apparatus is configured to estimate a temperature of a predetermined portion of an exhaust pipe of the engine in a case in which the shifting-time torque-down control is executed by using the ignition retard method, and to execute the shifting-time torque-down control by using the fuel cut method when an estimated value of the temperature of the predetermined portion of the exhaust pipe is not lower than a predetermined upper-limit temperature value.Type: ApplicationFiled: August 15, 2023Publication date: April 11, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Toshio INOUE
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Patent number: 11934195Abstract: A charging control system includes a lawn mower that includes a battery and performs a lawn mowing work while traveling autonomously, and a charging station for charging the battery. The lawn mower includes a superimposing unit for superimposing, on a charging current, a current indicating period information for defining a shutoff period of supply power to be supplied from the charging station. The charging station includes a current detector for detecting the charging current, an information acquisition unit for acquiring period information based on a detection result of the current detector, a switch for shutting off the supply power, and a shutoff controller for controlling the operation of the switch. The shutoff controller releases the shutoff of supply of power to the lawn mower based on the period information acquired by the information acquisition unit. Therefore, the power consumption of the lawn mower can be reduced.Type: GrantFiled: March 22, 2019Date of Patent: March 19, 2024Assignee: HONDA MOTOR CO., LTD.Inventors: Toshio Inoue, Toshiaki Kawakami, Takuya Kanisawa, Takumi Shiiyama, Jin Nishimura
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Patent number: 11854526Abstract: Provided is an active acoustic control program that can reduce noise in a vehicle interior irrespective of the vehicle type, due to being installed in a device that is easily available to anyone. This active acoustic control program is downloaded using a communicator that transmits and receives data to and from a server, and this program causes a computation process device to execute a process for generating a control signal that causes a canceling sound to be outputted from a speaker provided in an interior of a vehicle in order to reduce noise in the vehicle interior. Said program is provided with an adaptive notch filter that processes a reference signal as an adaptive signal to generate a control signal, and a control filter coefficient update unit that continuously updates a filter coefficient of the adaptive notch filter so that an error signal is minimized.Type: GrantFiled: March 30, 2021Date of Patent: December 26, 2023Assignee: Honda Motor Co., Ltd.Inventors: Toshio Inoue, Hiroyuki Yamada, Hiroshi Tokimoto
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Publication number: 20230347984Abstract: A vibration damping device for a vehicle includes a subframe to which a vibration of a wheel is transmitted, a plurality of mounts arranged between the subframe and a vehicle body and configured such that stiffness of each mount in a prescribed direction changes according to an excitation current supplied thereto, and a controller configured to control the excitation current supplied to each mount, wherein the controller is configured to set a target elastic center of the subframe, and individually calculate the excitation current supplied to each mount so as to match an actual elastic center of the subframe with the target elastic center.Type: ApplicationFiled: March 1, 2023Publication date: November 2, 2023Inventors: Xun WANG, Toshio INOUE, Yuho ITO
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Publication number: 20230324969Abstract: An information processing apparatus with a DC-DC converter, comprising: a calculation unit configured to calculate an impedance of a mobile battery attached to the information processing apparatus; and a control unit configured to control continuation or stop of a boost operation of the DC-DC converter on a basis of the impedance, wherein the control unit performs control to continue the boost operation of the DC-DC converter when the impedance is less than a threshold, and performs control to continue the boost operation by limiting some of functions of the information processing apparatus when the impedance is equal to or more than the threshold and less than a second threshold.Type: ApplicationFiled: June 15, 2023Publication date: October 12, 2023Inventors: Koichi TSUNO, Toshio INOUE
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Publication number: 20230319457Abstract: Provided is a sound field control device configured to produce a listening area where a travel sound effect is audible and a quiet area in a sound field in a vehicle using a plurality of speakers. The sound field control device includes: a periodic waveform generator configured to generate different phase two periodic waveforms related to the travel sound effect based on the vehicle speed, and a sound field controller configured to, for each of the plurality of speakers, individually amplify and combine the different phase two periodic waveforms to generate a combined result using an SAN filter having coefficients set for the speaker based on locations of the listening area and the quiet area and feed the combined result to the speaker.Type: ApplicationFiled: March 27, 2023Publication date: October 5, 2023Inventors: Xun WANG, Toshio INOUE
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Publication number: 20230319480Abstract: Provided is a sound field control device including: a non-control-target component extractor configured to extract a non-control-target component from a sound source signal; a speaker selector configured to select one of plural speakers as a speaker to output the non-control-target component, based on the location of the listening area; a control-target component extractor configured to extract a control-target component from the sound source signal; a sound controller configured to, for each of the plural speakers, adjust the amplitude and the phase of the control-target component, based on locations of the listening area and a quiet area using filters each having coefficients set for the speaker; and sound combiners provided respectively for the plural speakers, the sound combiners each configured to combine the control-target component whose amplitude and phase have been adjusted and the non-control-target component and to output the combined result to the corresponding speaker.Type: ApplicationFiled: March 28, 2023Publication date: October 5, 2023Inventors: Xun WANG, Toshio INOUE
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Publication number: 20230317050Abstract: An active noise reduction system reduces a noise in an internal space of a mobile body. The active noise reduction system includes a controller configured to control a canceling sound output device. The controller is configured to generate a first canceling estimation signal as an estimation signal of a canceling sound at a position of an error detector based on a reference signal, generate a second canceling estimation signal as an estimation signal of the canceling sound at a head position of an occupant by adjusting a time delay and an amplitude of the first canceling estimation signal based on a reference distance, and update a control filter for controlling the canceling sound output device based on the second canceling estimation signal.Type: ApplicationFiled: March 1, 2023Publication date: October 5, 2023Inventors: Xun WANG, Toshio INOUE