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公开(公告)号：US11796637B1
公开(公告)日：2023-10-24
申请号：US17016746
申请日：2020-09-10
Applicant: Amazon Technologies, Inc.
Inventor： Kandarp Shah , Jayashree Subramanian , Pratik Kalpesh Patel , Srinath Byregowda , James J Wolfe
CPC classification number: G01S7/415 , G01S7/412 , G01S13/42 , G06T7/246 , G06T7/60 , G06T2207/10028 , G06T2207/10044 , G06T2207/20081 , G06T2207/30196
Abstract: Systems and methods for fall detection on uneven surfaces utilizing radar are disclosed. For example, an electronic device may receive reflected energy from surfaces in an environment. Corresponding sensor data associated with an object moving on an uneven surface may be utilized to determine a velocity of the object and a height change of the object. When the velocity indicates that the object has stopped moving toward or away from the sensing device, and the height values indicate a sudden decrease in height, a fall event may be detected.
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公开(公告)号：US09407297B1
公开(公告)日：2016-08-02
申请号：US14300465
申请日：2014-06-10
Applicant: Amazon Technologies, Inc.
Inventor： Jay Praful Desai , Anuj Dron , Amit Shailesh Gaikwad , Felix Liu , Pratik Kalpesh Patel
CPC classification number: H04B1/0458
Abstract: Techniques are described for dynamically tuning mobile device antennas. Input derived from multiple sources and representing a variety of scenarios is provided to the RF modem of a mobile device. The modem is configured to select antenna tuning settings based on this input, each of which tunes the antenna by modifying its impedance as appropriate for the corresponding scenario.
Abstract translation: 描述了用于动态调整移动设备天线的技术。 从多个源导出并表示各种场景的输入被提供给移动设备的RF调制解调器。 调制解调器被配置为基于该输入来选择天线调谐设置，每个天线调谐设置通过根据相应的场景修改其阻抗来调谐天线。
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公开(公告)号：US11818742B1
公开(公告)日：2023-11-14
申请号：US17884809
申请日：2022-08-10
Applicant: Amazon Technologies, Inc.
Inventor： Milos Jorgovanovic , Ravi Ichapurapu , Morris Yuanhsiang Hsu , Ateet Kapur , Pratik Kalpesh Patel , Latha Srinivasan
IPC: H04W72/542 , H04W72/02 , H04W4/80 , H04W72/0453 , H04W72/541 , H04W76/10
CPC classification number: H04W72/542 , H04W4/80 , H04W72/02 , H04W72/0453 , H04W72/541 , H04W76/10
Abstract: A system and method for network channel selection is provided. A device includes WIFI, ZIGBEE, and BLUETOOTH communication controllers. The device's processor is configured to determine, using the communication controllers, a WIFI channel designated for communications and a first set of ZIGBEE channels designated for communications. The processor is configured to determine that a number of available BLUETOOTH channels that do not overlap the WIFI channel or any in-use ZIGBEE channels is less than a threshold number of BLUETOOTH channels required for communication using a BLUETOOTH protocol. The processor then determines the WIFI channel has a minimum duty cycle from among duty cycles of the WIFI channel and each ZIGBEE channel, determines a first BLUETOOTH channel that at least partially overlaps the WIFI channel, and causes the BLUETOOTH communication controller to transmit data using the first BLUETOOTH channel.
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公开(公告)号：US10098136B1
公开(公告)日：2018-10-09
申请号：US15637840
申请日：2017-06-29
Applicant: Amazon Technologies, Inc.
Inventor： Milos Jorgovanovic , Pratik Kalpesh Patel , Ateet Kapur
Abstract: A multi-radio wireless device capable of communicating on several wireless communication protocols (WCP) such as Wi-Fi, Bluetooth, etc. while avoiding on-device interference between radios operating using different WCPs. The device may measure an isolation value between radios during a calibration phase. During runtime operations, if a transmit activity is detected, the device may set a maximum receive gain using the expected transmit power and the isolation value. If a receive activity is detected, the device may set a maximum transmit power using an expected receive gain and the isolation value. The maximum receive gain and/or transmit powers may be obtained from a lookup table matching receive gain values to reference values where the reference values are a combination of transmit powers and isolation values.
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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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Patent Agency Ranking
公开(公告)号：US09929753B1
公开(公告)日：2018-03-27
申请号：US15385807
申请日：2016-12-20
Applicant: Amazon Technologies, Inc.
Inventor： Morris Yuanhsiang Hsu , Pratik Kalpesh Patel , Qinghai Gao , Ateet Kapur , Milos Jorgovanovic , Jay Praful Desai , Jin Guo , King Shaw
CPC classification number: H04B1/0064 , H04B7/26
Abstract: Techniques for harmonizing wireless communications performed by a computing device which communicates using varying wireless communication standards are described herein. For instance, a computing device may include multiple chipsets with associated antennas that are configured to perform wireless communications using separate wireless standards which operate at overlapping frequencies. To avoid performance degradation experienced in simultaneous use cases with communications operating at overlapping frequencies, the multiple chipsets may be configured with logic to determine which communications are prioritized when multiple chipsets attempt to communicate simultaneously. The multiple chipsets may be communicatively coupled to coordinate their communications by prioritizing certain types of communications over other types of communications to avoid simultaneous communications in overlapping frequencies. In this way, multiple chipsets that communicate using different standards at overlapping frequencies may avoid performance issues experienced in simultaneous use cases, while performing the communications which are of a highest priority level.
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公开(公告)号：US09917604B1
公开(公告)日：2018-03-13
申请号：US15080024
申请日：2016-03-24
Applicant: Amazon Technologies, Inc.
Inventor： Milos Jorgovanovic , Pratik Kalpesh Patel
CPC classification number: H04B1/109 , H03G3/3052 , H03G3/3078 , H04B1/1027
Abstract: A wireless communication device may reduce a receive sensitivity in the face of a high number of interfering communications to improve uplink throughput. In a listen-before-talk scenario, a device detecting a large number of undesired received communications may not transmit uplink data in the face of crowded traffic conditions. To avoid this scenario, if a desired communication link has a sufficiently high RSSI, a device may reduce its receive sensitivity to reduce the number of detected undesired communications while maintaining sufficient quality of the desired communication link. This approach will increase uplink throughput and improve communication performance.
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公开(公告)号：US11452110B1
公开(公告)日：2022-09-20
申请号：US15837790
申请日：2017-12-11
Applicant: Amazon Technologies, Inc.
Inventor： Milos Jorgovanovic , Ravi Ichapurapu , Morris Yuanhsiang Hsu , Ateet Kapur , Pratik Kalpesh Patel , Latha Srinivasan
Abstract: A system and method for network channel selection is provided. A device includes WIFI, ZIGBEE, and BLUETOOTH communication controllers. The device's processor is configured to determine, using the communication controllers, a WIFI channel designated for communications and a first set of ZIGBEE channels designated for communications. The processor is configured to determine that a number of available BLUETOOTH channels that do not overlap the WIFI channel or any in-use ZIGBEE channels is less than a threshold number of BLUETOOTH channels required for communication using a BLUETOOTH protocol. The processor then determines the WIFI channel has a minimum duty cycle from among duty cycles of the WIFI channel and each ZIGBEE channel, determines a first BLUETOOTH channel that at least partially overlaps the WIFI channel, and causes the BLUETOOTH communication controller to transmit data using the first BLUETOOTH channel.
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9.发明授权公开(公告)号：US10425508B1
公开(公告)日：2019-09-24
申请号：US15612430
申请日：2017-06-02
Applicant: AMAZON TECHNOLOGIES, INC.
Inventor： Pratik Kalpesh Patel , Ateet Kapur , Milos Jorgovanovic , Morris Yuanhsiang Hsu , Latha Srinivasan , Jian Lu
Abstract: Described are techniques for enabling a computing device, such as a slave device using a Bluetooth Advanced Audio Distribution Protocol (A2DP), to determine times when a master device is likely to be idle, during which communications using an alternate protocol, such as Wi-Fi may be exchanged. The length of a delay period may be determined based in part on counts of successive communications received from a master device. The length of a transmission period for use of the alternate protocol may be determined based in part on lengths of time between sets of communications received from a master device. If no communication is received from the master device for a length of time greater than or equal to the delay period, data may be communicated using the alternate protocol for a length of time less than or equal to the transmission period.
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公开(公告)号：US10270481B1
公开(公告)日：2019-04-23
申请号：US14978493
申请日：2015-12-22
Applicant: AMAZON TECHNOLOGIES, INC.
Inventor： Milos Jorgovanovic , Pratik Kalpesh Patel
Abstract: A first device may establish wireless connections with multiple devices using a single channel. The first device acquires reception data about these multiple devices that is indicative of a device identifier and received signal strength at the first device. Based on the reception data, a receiver gain is determined. A wireless network interface is configured to use the receiver gain. As a result, communication between the first device and the multiple devices is improved.
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