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公开(公告)号：US20240073586A1
公开(公告)日：2024-02-29
申请号：US18240137
申请日：2023-08-30
申请人： EM-TECH Co., Ltd.
发明人： Chan Ho Jeong , Young Seok Noh , Byung Min Yu
CPC分类号： H04R1/24 , H04R9/025 , H04R2400/11
摘要： A two-way speaker includes: a frame having a space for accommodating parts; a yoke partitioning the space of the frame vertically and having a lower surface and a side wall; a first speaker unit disposed below the yoke and having a magnet, a top plate, a voice coil, and a diaphragm; a protector disposed below the first speaker unit and protecting the diaphragm; a second speaker unit disposed above the yoke and having a magnetic circuit and a flexible-printed coil membrane (F-PCM) diaphragm having a coil pattern formed on a polymer film; and a sound emission yoke attached to an upper surface of the second speaker unit.
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公开(公告)号：US20230389871A1
公开(公告)日：2023-12-07
申请号：US18335297
申请日：2023-06-15
发明人： Seung Wan Kang , Tae-gyun Jeong , Jong Myung Kim , Bo Hyon Sim
CPC分类号： A61B5/6803 , A61B5/369
摘要： The present disclosure relates to an EEG measuring device which is in close contact with a head of a subject while having an adjustable size to fit the head of the subject.
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3.发明公开公开(公告)号：US20230156406A1
公开(公告)日：2023-05-18
申请号：US17986979
申请日：2022-11-15
申请人： EM-TECH Co., Ltd.
发明人： Byung Min Yu , Ji Young Lee
摘要： Provided are a diaphragm for a high water pressure waterproof microspeaker and a high pressure waterproof microspeaker including the same. The diaphragm for a high pressure waterproof microspeaker, which is provided in a microspeaker to reproduce sound, includes a center diaphragm and a side diaphragm, includes a center diaphragm attachment portion having a ring shape with a perforated center overall and attached to an outer periphery of the center diaphragm, a frame attachment portion attached to a frame, and a dome portion located between the center diaphragm attachment portion and the frame attachment portion and protruding upwardly or downwardly. The center diaphragm attachment portion of the side diaphragm includes an upper attachment portion attached to an upper surface of the center diaphragm and a lower attachment portion attached to a lower surface of the center diaphragm.
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公开(公告)号：US20230156405A1
公开(公告)日：2023-05-18
申请号：US17986480
申请日：2022-11-14
申请人： EM-TECH Co., Ltd.
发明人： Byung Min Yu , Jae Hwa Lim , Young Uk Jo , Yong Hee Oh , Yong Dae So
摘要： A microspeaker in which a diaphragm and a voice coil are replaced with a flexible printed circuit board (FPCB) is provided. The microspeaker includes: a magnetic circuit having a yoke and a magnet; and an FPCB diaphragm installed on the magnetic circuit and having a conductive coil pattern formed on a non-conductive film. When an electric signal is applied to the conductive coil pattern of the FPCB diaphragm, the FPCB diaphragm vibrates by mutual electromagnetic force with the magnetic circuit to generate sound.
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公开(公告)号：US20230023601A1
公开(公告)日：2023-01-26
申请号：US17869404
申请日：2022-07-20
申请人： EM-TECH Co., Ltd.
发明人： Yong Hee Oh , Jae Hwa Lim
IPC分类号： H04R1/28
摘要： The present disclosure provides a microspeaker enclosure including a block formed of a porous material. The microspeaker enclosure including a block formed of a porous material includes a microspeaker, an enclosure case in which the microspeaker is mounted, the enclosure case including a back volume communicating with the microspeaker, a porous block installed in the back volume, having 3-nm pores having air adsorption performance and 6-nm pores serving as a passage for air circulation in a predetermined ratio, and including porous particles combined as a block, and a film attached to one surface of the porous block.
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公开(公告)号：US20230022009A1
公开(公告)日：2023-01-26
申请号：US17869338
申请日：2022-07-20
申请人： EM-TECH Co., Ltd.
发明人： Yong Hee Oh , Jae Hwa Lim
摘要： The present disclosure provides a microspeaker enclosure including a block formed of a porous material. The microspeaker enclosure includes a microspeaker, an enclosure case in which the microspeaker is mounted, the enclosure case including a back volume communicating with the microspeaker, and a porous block installed in the back volume and prepared by mixing first porous particles having excellent adsorption capacity of nitrogen or oxygen and second porous particles having a porosity of 50% or more.
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公开(公告)号：US11564026B2
公开(公告)日：2023-01-24
申请号：US17363922
申请日：2021-06-30
申请人： EM-TECH Co., Ltd.
发明人： Yong Ju Ji , Jun Hee Han , Young Woo Kim
摘要： Provided is an earphone having a pressure equilibrium structure capable of preventing a decrease in acoustic characteristics or sound pressure, while having a structure capable of achieving equilibrium within an ear canal. The earphone includes a receiver including a frame, a magnetic circuit, a voice coil, and a diaphragm, a front housing surrounding a front and a side surface of the receiver and including a sound tube, a rear housing attached to a rear of the receiver and coupled to the front housing, and a duct located between the diaphragm and the sound tube. An acoustic path through which sound is emitted is formed from the receiver to an end of the sound tube. The front housing or the rear housing includes a leakage hole. An inner end of the duct is connected to the acoustic path. An outer end of the duct is connected to the leakage hole.
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公开(公告)号：US20220038810A1
公开(公告)日：2022-02-03
申请号：US17388139
申请日：2021-07-29
申请人： EM-TECH Co., Ltd.
发明人： Yong Ju Ji , Young Woo Kim
摘要： A receiver having a pressure equilibrium structure includes a magnetic circuit including a yoke, a permanent magnet coupled to the yoke, and a top plate attached to the permanent magnet, a voice coil configured to vibrate by mutual electromagnetic force with the magnetic circuit, a diaphragm allowing the voice coil to be attached thereto and vibrated by the voice coil to generate sound, and a protector coupled to an upper surface of the diaphragm and surrounding an outer side of the magnetic circuit with a gap from an outer periphery of the magnetic circuit, wherein the protector has a hole communicating with a gap portion with the magnetic circuit and an air path is formed by the hole of the protector and the gap between the magnetic circuit and the protector.
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公开(公告)号：US20220007101A1
公开(公告)日：2022-01-06
申请号：US17363922
申请日：2021-06-30
申请人： EM-TECH Co., Ltd.
发明人： Yong Ju Ji , Jun Hee Han , Young Woo Kim
摘要： Provided is an earphone having a pressure equilibrium structure capable of preventing a decrease in acoustic characteristics or sound pressure, while having a structure capable of achieving equilibrium within an ear canal. The earphone includes a receiver including a frame, a magnetic circuit, a voice coil, and a diaphragm, a front housing surrounding a front and a side surface of the receiver and including a sound tube, a rear housing attached to a rear of the receiver and coupled to the front housing, and a duct located between the diaphragm and the sound tube. An acoustic path through which sound is emitted is formed from the receiver to an end of the sound tube. The front housing or the rear housing includes a leakage hole. An inner end of the duct is connected to the acoustic path. An outer end of the duct is connected to the leakage hole.
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公开(公告)号：US20210304788A1
公开(公告)日：2021-09-30
申请号：US17213470
申请日：2021-03-26
申请人： EM-TECH Co., Ltd.
发明人： Hyuk Won
摘要： Disclosed is a wireless sound converting system having a bio-signal detection function to detect a bio-signal from an ear with relatively little movement and provide optical and/or acoustic stimulation according to the detected bio-signal. At least one of wireless sound converting device includes: at least one detection sensor for detecting a bio-signal and a light irradiating unit for irradiating light to an ear or inside of the ear of a wearer, and a data processor for determining a physical condition of the wearer using a detection value from the detection sensor and performing at least one of an optical stimulation function based on light irradiation of the light irradiating unit or an acoustic stimulation function based on sound emission of the speaker unit according to the determined physical condition of the wearer.
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