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公开(公告)号：US20160225366A1
公开(公告)日：2016-08-04
申请号：US15002666
申请日：2016-01-21
Inventor： Tsuyoshi MAEDA , Yoshifumi ASAO
IPC: G10K11/178
CPC classification number: G10K11/178 , G10K11/17857 , G10K11/17881 , G10K2210/1281 , G10K2210/3027 , G10K2210/3219
Abstract: A noise reduction device includes a plurality of noise microphones, noise controller, and control speakers. Noise controller generates a control-sound signal to reduce a noise, at a control center of a control space, with the noise being detected by the plurality of noise microphones. Noise microphone disposed at a shorter distance from the control center than distance “d” indicated by Relational Expression (1) is smaller in number than noise microphones disposed at longer distances than distance “d” where “λ” is a wavelength corresponding to control upper-limit frequency “f” in noise microphones, “d0” is a distance from the control center to control speakers, “t” is a control delay time in control speakers, and “v” is a sound speed. d=d0+t×v−λ/2 (1)
Abstract translation: 降噪装置包括多个噪声麦克风，噪声控制器和控制扬声器。 噪声控制器产生控制声音信号，以在控制空间的控制中心处降低由多个噪声麦克风检测的噪声的噪声。 设置在与控制中心相距较短距离处的噪声麦克风距离关系式（1）所示的距离“d”的数量小于距离“d”设置的噪声麦克风的数量，其中“λ”是对应于控制上限 在噪声麦克风中限制频率“f”，“d0”是控制中心到控制扬声器的距离，“t”是控制扬声器中的控制延迟时间，“v”是声速。 d = d0 + t×v-λ/ 2（1）
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公开(公告)号：US20180075835A1
公开(公告)日：2018-03-15
申请号：US15432285
申请日：2017-02-14
Inventor： Takeshi HATAKEYAMA , Tsuyoshi MAEDA
IPC: G10K11/178
CPC classification number: G10K11/178 , B60R13/0815 , B64C1/40 , G10K11/17857 , G10K2210/1281 , G10K2210/3219 , G10K2210/3221
Abstract: A noise reduction device includes: a noise detector that detects noise in a space at least partially surrounded by a shell; a noise controller that generates a control sound signal for reducing the noise detected by the noise detector; and a control sound outputter that outputs control sound to the space based on the generated control sound signal. A seat that is reclinable including a recliner having a seat surface at a variable angle with respect to a reference plane is provided in the space. When L (cm) represents the length of the recliner in the front-to-back direction, the control sound outputter is provided at a height of L×sin θ+8 (cm) above the reference plane where θ is between two degrees and eight degrees, inclusive.
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公开(公告)号：US20210166660A1
公开(公告)日：2021-06-03
申请号：US17105820
申请日：2020-11-27
Inventor： Yuto HIGASHIGAWA , Tsuyoshi MAEDA
Abstract: An information display terminal comprises a display controller configured to determine a range to be used by an image display device to display an image on a mirror surface and a sensor unit configured to detect an ambient condition. The display controller determines the range to be used to display an image on the mirror surface using information detected by the sensor unit. The information display terminal is a mirror display having a mirror function on a display surface as well as a function of displaying an image or information on an entire surface or a portion of the mirror surface so that it can provide information while keeping convenience as a mirror.
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公开(公告)号：US20170186417A1
公开(公告)日：2017-06-29
申请号：US15381546
申请日：2016-12-16
Inventor： Tsuyoshi MAEDA , Yoshifumi ASAO , Masaaki HIGASHIDA , Mitsuhiro TOSA , Kaname TOMITA , Toshihide ABE
IPC: G10K11/178 , H04R1/02
CPC classification number: G10K11/178 , G10K11/17857 , G10K2210/1281 , G10K2210/1283 , G10K2210/3027 , G10K2210/3044 , H04R1/023 , H04R1/025 , H04R2201/021 , H04R2499/13
Abstract: A noise reduction device is used together with a shell which surrounds at least a part of the periphery of reclinable seat. The device includes a plurality of noise microphones, a noise controller, and control speakers. Control speakers output a sound based on a control-sound signal that is generated by the noise controller. Each of noise microphones is accommodated in back wall configuring the shell and is set back from a surface of the back wall.
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