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公开(公告)号：US11904234B2
公开(公告)日：2024-02-20
申请号：US15405032
申请日：2017-01-12
申请人： MediaTek Inc.
发明人： Vladimir A. Muratov , Da-shan Shiu , Yungszu Tu
IPC分类号： A63F13/211 , A63F13/212 , A63F13/235 , A63F13/428
CPC分类号： A63F13/211 , A63F13/212 , A63F13/235 , A63F13/428 , A63F2300/8082
摘要： A wearable sensor apparatus includes a band shaped and sized to be worn on a finger or limb of a user, a plurality of sensor coils configured to detect a magnetic field. A processor configured to calculate a position of the wearable sensor apparatus based upon signals from the plurality of sensor coils, and a communication module configured to transmit the position of the wearable sensor apparatus.
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公开(公告)号：US20210057939A1
公开(公告)日：2021-02-25
申请号：US17093272
申请日：2020-11-09
申请人： MediaTek Inc.
发明人： Vladimir A. Muratov , William Plumb
摘要： Methods, apparatus and computer-readable storage media for performing foreign object detection (FOD) in a wireless power transfer system. A plurality of FOD measurements may be performed and processed to perform FOD.
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公开(公告)号：US10211677B2
公开(公告)日：2019-02-19
申请号：US15275841
申请日：2016-09-26
申请人： MediaTek Inc.
摘要： A mobile device includes a housing having a conductive region and a wireless power receiver having a receive coil configured to receive wireless power through the conductive region. The thickness of the conductive region is less than δ/10, wherein δ is a skin depth of the conductive region at a primary frequency of an electromagnetic signal that provides the wireless power.
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公开(公告)号：US20170178800A1
公开(公告)日：2017-06-22
申请号：US15254439
申请日：2016-09-01
申请人： MediaTek Inc.
发明人： Vladimir A. Muratov
CPC分类号： H01F27/365 , H01F38/14 , H01F2003/106 , H04B5/0037
摘要： A wireless power assembly including a multi-layer magnetic shield is described. The wireless power assembly includes a wireless power coil and the multi-layer magnetic shield arranged adjacent to the wireless power coil. The magnetic shield includes a first layer comprising a first material and a second layer comprising a second material, wherein the second material has a higher permeability than the first material.
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公开(公告)号：US20160211702A1
公开(公告)日：2016-07-21
申请号：US15086367
申请日：2016-03-31
申请人： MediaTek Inc.
摘要： Apparatus and methods for dual-mode wireless power transfer are described. Two power transmit coils may be configured to provide magnetic resonant and magnetic inductance wireless power transfer from a same charging area of a wireless power transmitter. The coils and magnetic backing may be arranged to provide similar power transfer performance for the two power transfer methodologies.
摘要翻译： 描述了用于双模无线电力传输的装置和方法。 两个功率发射线圈可以被配置为提供来自无线功率发射器的相同充电区域的磁共振和磁感抗无线功率传输。 线圈和磁背衬可以被布置成为两种功率传递方法提供类似的功率传递性能。
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公开(公告)号：US11677273B2
公开(公告)日：2023-06-13
申请号：US17039124
申请日：2020-09-30
申请人： MediaTek Inc.
发明人： Vladimir A. Muratov , Yung-Chih Yen
CPC分类号： H02J50/20 , H02J50/10 , H02J50/12 , H02J50/402 , H04B5/0037
摘要： A multi-mode wireless power transmitter includes a first drive circuit of a first type and a second drive circuit of a second type. The first drive circuit is configured to drive a first transmit coil at a first frequency. The second drive circuit is configured to drive a second transmit coil at a second frequency higher than the first frequency.
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公开(公告)号：US10916972B2
公开(公告)日：2021-02-09
申请号：US16228556
申请日：2018-12-20
申请人： MediaTek Inc.
摘要： An apparatus and method for performing foreign object detection for a wireless power transmitter. A matching network and transmit coil are energized, and a resonance is excited. The resonance is allowed to decay. A temporal characteristic of the decay is measured. The temporal characteristic is analyzed to determine whether a foreign object is coupled to an electromagnetic field generated by the transmit coil.
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公开(公告)号：US10291081B2
公开(公告)日：2019-05-14
申请号：US15361720
申请日：2016-11-28
申请人： MediaTek Inc.
发明人： Vladimir A. Muratov
摘要： A wireless power system and methods for operating the same are provided for protection of a wireless power receiver during wireless power transfer. A signal strength limit for the wireless power transmitter is determined based upon a receiver limit, a sensitivity of the wireless power receiver and a scaling factor of the wireless power transmitter.
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公开(公告)号：US10291036B2
公开(公告)日：2019-05-14
申请号：US14990833
申请日：2016-01-08
申请人： MediaTek Inc.
发明人： Vladimir A. Muratov
摘要： A wireless power transmitter includes a multi-mode drive circuit having a controllable resonant frequency. The multi-mode drive circuit is controlled to have a first resonant frequency to drive wireless power transmission at a first transmit frequency. The multi-mode drive circuit is also controlled to have a second resonant frequency higher than the first resonant frequency to drive wireless power transmission at a second transmit frequency higher than the first transmit frequency.
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公开(公告)号：US20170163101A1
公开(公告)日：2017-06-08
申请号：US15361720
申请日：2016-11-28
申请人： MediaTek Inc.
发明人： Vladimir A. Muratov
摘要： A wireless power system and methods for operating the same are provided for protection of a wireless power receiver during wireless power transfer. A signal strength limit for the wireless power transmitter is determined based upon a receiver limit, a sensitivity of the wireless power receiver and a scaling factor of the wireless power transmitter.
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