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公开(公告)号：US11066083B2
公开(公告)日：2021-07-20
申请号：US16634881
申请日：2018-08-02
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Yasuhiro Fujita
Abstract: To allow an alarm vibration generated by a vibration generator to be recognized by a user through a vibration transmission member. A vehicle alarm device (100) includes a vibration generator (30) configured to generate an alarm vibration having a frequency corresponding to a frequency of a received alarm signal, a vibration transmission member (90) configured to transmit the alarm vibration to a user, a travel situation information acquisition unit (70) configured to acquire travel situation information in accordance with a travel situation of the vehicle, and an alarm signal generator (70) configured to generate the alarm signal such that when the value of the acquired travel situation information is high, a signal to be inputted to the vibration generator (30) includes at least a high-band frequency and such that when the value of the travel situation information is low, the signal to be inputted to the vibration generator (30) includes at least a low-band frequency.
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公开(公告)号：US10179592B2
公开(公告)日：2019-01-15
申请号：US15778224
申请日：2016-11-02
Applicant: CLARION CO., LTD.
Inventor： Yasuhiro Fujita , Takeshi Hashimoto , Kenji Kono
Abstract: To make a notification to the driver so that the driver can distinguish or recognize the notification. A vehicle notification device (1a) inputs a first sweep signal whose frequency is changed in a predetermined frequency range, to a vibrator (4), calculates frequency characteristics of a vibration in the vehicle interior, detects a frequency range in which the signal level of vehicle-travel-time frequency characteristics is higher than the signal level of vehicle-stop-time frequency characteristics by a predetermined level amount or more, generates a second sweep signal whose frequency is changed in a range obtained by excluding the detected frequency range from the predetermined frequency range of the first sweep signal, and outputs the second sweep signal from the vibrator (4).
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公开(公告)号：US11265651B2
公开(公告)日：2022-03-01
申请号：US16892285
申请日：2020-06-04
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Yasuhiro Fujita
IPC: H04R3/04
Abstract: A frequency compressor of a vibration output apparatus generates a compressed signal by converting frequency components of a mid-band signal into low-band frequency components of a low-band signal by increasing the total number of samples by a factor of n and thus compressing the frequency of amplitude information included in mid-band frequency components of the mid-band signal to 1/n. If the level of a low-band envelope signal is lower than a predetermined threshold level, a vibration signal generator generates a vibration signal by combining the compressed signal with the low-band signal consisting of the low-band frequency components of an acoustic signal. If the level of the low-band envelope signal is higher than the predetermined threshold level, the vibration signal generator generates a vibration signal by directly using the low-band signal. A vibration output unit outputs a vibration on the basis of the generated vibration signal.
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公开(公告)号：US11104257B2
公开(公告)日：2021-08-31
申请号：US16981283
申请日：2019-03-19
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Yasuhiro Fujita
Abstract: A notification apparatus (1a) includes a first signal converter (50) disposed in a cushion of a seat (80) and configured to convert a vibration transmitted to the seat (80) into a seat vibration signal, a second signal converter (60) disposed in a position other than the cushion and configured to detect a transmitted vibration and to convert into an input vibration signal, a level difference calculator (30a) configured to calculate a signal level difference ΔG by subtracting a signal level of the seat vibration signal from a signal level of the input vibration signal, a notification aspect determination unit (100) configured to determine a notification aspect for making a notification to a user, on the basis of a value of the signal level difference ΔG, and a notification execution unit (55) configured to, when acquiring notification information, make the notification on the basis of the notification aspect.
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公开(公告)号：US10362396B2
公开(公告)日：2019-07-23
申请号：US15551752
申请日：2016-02-16
Applicant: Clarion Co., Ltd.
Inventor： Takeshi Hashimoto , Tetsuo Watanabe , Hideyuki Morita , Takatomi Kumagai , Yasuhiro Fujita , Kazutomo Fukue
IPC: H04R3/00 , H04R3/04 , H04R3/14 , H04S1/00 , H04S3/00 , H04S5/02 , H03H17/00 , H03H17/02 , H03H17/08
Abstract: A phase control signal generation device generating a phase control signal for each of frequency bands for an audio signal converted into a frequency domain, the phase control signal generation device comprising: a setting change means that is able to change setting of a propagation delay time for each of predetermined frequency bands; a difference obtaining means that obtains a difference between propagation delay times before and after setting change; an updating means that updates a phase control amount of the frequency band for which the propagation delay time is changed, based on the obtained difference; and a phase control signal generating means that generates a phase control signal of each frequency band by performing a smoothing process for the phase control amount in a frequency domain using the updated phase control amount.
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Patent Agency Ranking
公开(公告)号：US10354675B2
公开(公告)日：2019-07-16
申请号：US15322194
申请日：2015-06-22
Applicant: Clarion Co., Ltd.
Inventor： Takeshi Hashimoto , Tetsuo Watanabe , Yasuhiro Fujita , Kazutomo Fukue , Takatomi Kumagai
IPC: G10L21/0332 , G10L21/0232 , G10L21/0388
Abstract: There is provided a signal processing device, comprising: a frequency detecting means that detects a frequency satisfying a predetermined condition from an audio signal; an offset means that gives an offset to the detected frequency by the frequency detecting means in accordance with a frequency property at the detected frequency or around the detected frequency; a reference signal generating means that generates a reference signal by extracting a signal from the audio signal based on the detected frequency offset by the offset means; an interpolation signal generating means that generates an interpolation signal based on the generated reference signal; and a signal synthesizing means that performs high band interpolation by synthesizing the generated interpolation signal and the audio signal.
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公开(公告)号：US09866960B2
公开(公告)日：2018-01-09
申请号：US15129827
申请日：2015-02-20
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Tetsuo Watanabe , Yasuhiro Fujita , Kazutomo Fukue
CPC classification number: H04R3/04 , B06B1/0238 , B06B2201/52 , B06B2201/70 , H04R1/00 , H04R1/025 , H04R3/00 , H04R5/023 , H04R29/001 , H04R2201/028 , H04R2499/13
Abstract: The present invention provides a vibration audio system for transmitting an audio signal outputted from a sound source to a listener in the form of vibration while reducing output level of the signal and power consumption. The system includes an envelope detection unit (204) for detecting an envelope signal of the audio signal outputted from a sound source, a vibration transmission member for allowing the listener to perceive vibration of a low-frequency sound outputted from a low-frequency output speaker that outputs audio signals, and a frequency conversion unit (205) for generating an audio signal frequency-converted on the basis of resonant frequencies by multiplying the envelope signal by sine waves having the same frequencies as resonance frequencies obtained from an impulse response of the low-frequency output speaker disposed in the vibration transmission member. The audio signal frequency-converted by the frequency conversion unit (205) is outputted from the low-frequency output speaker.
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公开(公告)号：US11786933B2
公开(公告)日：2023-10-17
申请号：US16919037
申请日：2020-07-01
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Yasuhiro Fujita
CPC classification number: B06B1/0238 , H04R1/025 , H04R5/023 , B06B2201/70 , H04R2201/028
Abstract: A vibration signal generation apparatus includes an absolute value signal generator configured to generate an absolute value signal by detecting an absolute value of amplitude of an acoustic signal, an envelope signal generator configured to generate an envelope signal by detecting an envelope of the absolute value signal, a differentiator configured to differentiate the envelope signal, an amplitude limiter configured to generate an amplitude-limited signal by limiting amplitude of the envelope signal so that an amplitude value of the differentiated envelope signal becomes zero or greater, and a vibration signal generator configured to generate a vibration signal by multiplying the amplitude-limited signal by a reference signal having a frequency that allows a human to perceive a vibration.
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公开(公告)号：US10960804B2
公开(公告)日：2021-03-30
申请号：US16617499
申请日：2018-05-17
Applicant: CLARION CO., LTD.
Inventor： Yasuhiro Fujita , Takeshi Hashimoto , Kazutomo Fukue
Abstract: A vibration generation device (200) includes a frequency information recorder (80) configured to record frequency values of inputted measurement signals such that the frequency values are associated with measurement positions of vibrations on the seat originally generated by the vibration generator (20) on the basis of the measurement signals and transmitted to the seat by the vibration transmission member and an output signal generator (70) configured to obtain a frequency value of a measurement position corresponding to a desired position from the frequency information recorder (80) and to generate an output signal having the frequency value.
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公开(公告)号：US10750283B2
公开(公告)日：2020-08-18
申请号：US16475495
申请日：2018-01-31
Applicant: CLARION CO., LTD.
Inventor： Kazutomo Fukue , Takeshi Hashimoto , Kenji Kono , Yasuhiro Fujita
Abstract: Attenuation of output levels is suppressed while interference due to a plurality of vibrators is reduced.An acoustic control device 30 performs correction processing of correcting phase delay characteristics including transmission systems from exciters 21L and 21R which are first and second vibrators connected with a rigid body, on acoustic signals SR and SL. Thereafter, the acoustic control device 30 controls the exciters 21L and 21R on the basis of the corrected acoustic signals SL1 and SR1.
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