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公开(公告)号：US10149115B1
公开(公告)日：2018-12-04
申请号：US15416713
申请日：2017-01-26
Applicant: Amazon Technologies, Inc.
Inventor： Daniel Buchmueller , Ronald Joseph Degges, Jr. , Jin Dong Kim , Gur Kimchi , Sang Eun Lee , Subram Narasimhan , Koohyun Um
IPC: H04W76/10 , H04W4/04 , H04B1/3822 , H01Q3/08 , H01Q1/28
Abstract: Systems, methods, and apparatus are provided for enabling orientation of directional antennas even when one or more of the directional antennas are moving. Position information for each directional antenna is transmitted using an omnidirectional antenna transmitting at a low bandwidth and a low power. The position information of the directional antennas is used to orient the directional antennas so that a high bandwidth, low power wireless connection can be enabled and/or maintained between the directional antennas. The position information is periodically transmitted and the orientation of the directional antennas is updated as one or more of the directional antennas move so that the wireless connection between the directional antennas is maintained.
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公开(公告)号：US11271629B1
公开(公告)日：2022-03-08
申请号：US15906623
申请日：2018-02-27
Applicant: Amazon Technologies, Inc.
Inventor： Koohyun Um , Jungtao Liu , Ce Zhang
Abstract: A system that can determine states of human activity and transitions between those states using wireless signal data. A machine learning model such as a Hidden Markov Model (HMM) may be trained to determine transitions between states of human activity (e.g., static, slow movement, fast movement) using information from wireless signal data, such as channel state information gathered from Wi-Fi signal beacons. Depending on the state of the human activity the system may then cause certain commands to be executed corresponding to the human activity such as turning on a certain configuration of lights, playing certain music, or the like.
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公开(公告)号：US10674331B1
公开(公告)日：2020-06-02
申请号：US16299744
申请日：2019-03-12
Applicant: Amazon Technologies, Inc.
Inventor： Rongsheng Huang , Shao-Cheng Wang , Jungtao Liu , Koohyun Um
Abstract: Technology for indoor location estimation of wireless stations is described. In one embodiment, a processing device identifies a plurality of wireless stations that support a signal round-trip-time measurement protocol. The processing device associates the plurality of wireless stations with one another to form a logical grouping of the plurality of wireless stations and provides an indication of the plurality of wireless stations in the logical grouping to each of the plurality of wireless stations. The processing device receives a first round-trip-time measurement value for a signal transmitted between a first wireless station and a second wireless station of the logical grouping and a second round-trip-time measurement value for a signal transmitted between the first wireless station and a third wireless station of the logical grouping. These round-trip-time measurement values indicate a distance between the wireless stations, respectively. The processing device determines, using the first distance and the second distance, a position of the first wireless station relative to the second wireless station and the third wireless station.
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公开(公告)号：US10310079B1
公开(公告)日：2019-06-04
申请号：US15910897
申请日：2018-03-02
Applicant: Amazon Technologies, Inc.
Inventor： Koohyun Um , Ce Zhang , Jungtao Liu
Abstract: A method includes receiving, by a first wireless device, first data indicative of channel properties of a first communication link between the first wireless device and a second wireless device, the first wireless device and the second wireless device being located in a same vicinity. The method further includes detecting, using a supervised machine learning (ML) model applied to the first data, human movement and presence of stationary objects within the same vicinity and activating, by the first wireless device in response to detection of the human movement, an ultrasonic signal. The method further includes receiving, by the first wireless device, a reflected component of the ultrasonic signal and confirming, by the first wireless device using the reflected component, presence of a human in the same vicinity.
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公开(公告)号：US09698857B1
公开(公告)日：2017-07-04
申请号：US14632929
申请日：2015-02-26
Applicant: AMAZON TECHNOLOGIES, INC.
Inventor： Tzung-I Lee , Koohyun Um , In Chul Hyun , Mercyma Deeba Balachandran
CPC classification number: H04B1/401 , H01Q5/00 , H01Q7/00 , H01Q9/30 , H04B7/0413 , H04B7/0693 , H04W84/12 , H04W88/06
Abstract: Antenna structures and methods of operating the same of an electronic device are described. One apparatus includes an antenna element that is self-resonant at a first frequency in a first mode and self-resonant at a second frequency in a second mode. A radio frequency (RF) is coupled between the antenna element and a ground plane. A RF circuit, coupled to the antenna element via an RF feed, is operable to control the RF switch to switch the antenna element between the first mode and the second mode. The RF circuit is operable to cause the antenna element to radiate or receive electromagnetic energy in a first radiation pattern in the first mode and to radiate or electromagnetic energy in a second radiation pattern in the second mode.
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Patent Agency Ranking
公开(公告)号：US11925447B1
公开(公告)日：2024-03-12
申请号：US17183773
申请日：2021-02-24
Applicant: Amazon Technologies, Inc.
Inventor： Pratik Kalpesh Patel , Feng Zhang , Koohyun Um , James J. Wolfe
CPC classification number: A61B5/05 , A61B5/1115 , A61B5/113 , A61B5/4806 , G01S13/62 , G16H40/67 , G16H50/30 , A61B5/1128
Abstract: A method and system including a monitoring device to detect, during a session, a set of radar signals associated with first respiratory-related movements of a first person and second respiratory-related movements of a second person located within a detection zone comprising at least a portion of a bed. The method and system dynamically generate an out-of-bed zone adjacent to a side of the bed. The out-of-bed zone is monitored to detect motion within the zone to determine when the first person exits and enters the bed. The method and system identify a portion of the set of radar signals collected during a time period when the first person is determined to be out of the bed. The identified portion of the set of radar signals is removed from the set of radar signals collected during the sleep session.
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公开(公告)号：US09590298B1
公开(公告)日：2017-03-07
申请号：US14711737
申请日：2015-05-13
Applicant: Amazon Technologies, Inc.
Inventor： Daniel Buchmueller , Ronald Joseph Degges, Jr. , Jin Dong Kim , Gur Kimchi , Sang Eun Lee , Subram Narasimhan , Koohyun Um
IPC: H04B1/38 , H01Q3/08 , H01Q1/28 , H04B1/3822 , H04B1/48
CPC classification number: H01Q3/08 , H01Q1/1257 , H01Q1/28
Abstract: Systems, methods, and apparatus are provided for enabling orientation of directional antennas even when one or more of the directional antennas are moving. Position information for each directional antenna is transmitted using an omnidirectional antenna transmitting at a low bandwidth and a low power. The position information of the directional antennas is used to orient the directional antennas so that a high bandwidth, low power wireless connection can be enabled and/or maintained between the directional antennas. The position information is periodically transmitted and the orientation of the directional antennas is updated as one or more of the directional antennas move so that the wireless connection between the directional antennas is maintained.
Abstract translation: 提供了系统，方法和装置，用于即使当定向天线中的一个或多个正在移动时，定向天线的取向也是如此。 使用以低带宽和低功率发送的全向天线来发送每个定向天线的位置信息。 定向天线的位置信息用于定向方向天线，使得可以在定向天线之间启用和/或维持高带宽低功率无线连接。 周期性地发送位置信息，并且随着一个或多个定向天线的移动，定向天线的方向被更新，从而保持定向天线之间的无线连接。
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公开(公告)号：US11793425B1
公开(公告)日：2023-10-24
申请号：US17114399
申请日：2020-12-07
Applicant: Amazon Technologies, Inc.
Inventor： Durgaprasad Kashinath Shamain , Koohyun Um , Morris Yuanhsiang Hsu
CPC classification number: A61B5/1126 , A61B5/05 , A61B5/113 , A61B5/4815 , A61B5/7275 , G01S7/41 , G01S13/88 , G16H40/67 , G16H50/30
Abstract: Devices, systems, and methods are provided for disambiguating phase in radar-based waveforms. A method may include determining a first waveform, the first waveform associated with a first subcarrier and a second subcarrier in a frequency domain, and the first waveform based on radar measurements. The method may include determining a motion signal, and determining, based on the first subcarrier, the second subcarrier, a subcarrier spacing of the subcarriers, and the motion signal, a phase change differential value between the first subcarrier and the second subcarrier. The method may include generating, based on the phase change differential value, a second waveform, and generating a third waveform in the time domain by applying the second waveform to the first waveform.
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公开(公告)号：US10771939B1
公开(公告)日：2020-09-08
申请号：US16175377
申请日：2018-10-30
Applicant: Amazon Technologies, Inc.
Inventor： Daniel Buchmueller , Ronald Joseph Degges, Jr. , Jin Dong Kim , Gur Kimchi , Sang Eun Lee , Subram Narasimhan , Koohyun Um
IPC: H04W4/44 , H04W76/10 , H01Q3/08 , H04B1/3822 , H01Q1/28
Abstract: Systems, methods, and apparatus are provided for enabling orientation of directional antennas even when one or more of the directional antennas are moving. Position information for each directional antenna is transmitted using an omnidirectional antenna transmitting at a low bandwidth and a low power. The position information of the directional antennas is used to orient the directional antennas so that a high bandwidth, low power wireless connection can be enabled and/or maintained between the directional antennas. The position information is periodically transmitted and the orientation of the directional antennas is updated as one or more of the directional antennas move so that the wireless connection between the directional antennas is maintained.
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公开(公告)号：US10305766B1
公开(公告)日：2019-05-28
申请号：US15965449
申请日：2018-04-27
Applicant: Amazon Technologies, Inc.
Inventor： Ce Zhang , Koohyun Um , Jungtao Liu , Peruvemba Ranganathan Sai Ananthanarayanan
Abstract: A system and method include processing logic receiving, from a wireless transceiver of a first device, first data indicative of channel state information (CSI) of a first communication link between the wireless transceiver and a wireless transmitter of a second device, the first device and the second device being located in a building. The logic pre-preprocesses the first data to generate input vectors composed of statistical parameter values derived from sets of discrete samples of the first data. The logic processes, through a long short-term memory (LSTM) layer of a neural network, the input vectors to generate multiple hidden state values of the neural network. The logic processes, through a set of additional layers of the neural network, respective hidden state values of the multiple hidden state values to determine that a human is present in the building.
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