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公开(公告)号：US11451897B1
公开(公告)日：2022-09-20
申请号：US16707366
申请日：2019-12-09
Applicant: Amazon Technologies, Inc.
IPC: H04R1/10 , H04W4/80 , H04B17/318 , H04W24/08 , H04W76/10
Abstract: Systems, methods, and computer-readable media are disclosed for dynamic selection of a primary wireless earbud device. In one embodiment, an example system may include a first wireless earbud device having first memory and at least one first processor configured to access the first memory. The at least one first processor may execute computer-executable instructions to determine a first RSSI value for a first connection to a device, determine a first packet error rate value for the first connection, and determine a first link quality score using the first RSSI value and the first packet error rate value. The at least one first processor may execute computer-executable instructions to determine that the first link quality score is less than or equal to a handover threshold, disconnect from the device, and cause a second wireless earbud device to establish a second connection to the device.
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2.发明授权公开(公告)号：US11152966B1
公开(公告)日：2021-10-19
申请号：US16566598
申请日：2019-09-10
Applicant: Amazon Technologies, Inc.
Inventor： Basak Oyman , Sai Prashanth Chinnapalli , Morris Yuanhsiang Hsu
IPC: H04B1/00 , H04B1/10 , H04L5/14 , H04B1/04 , H04B1/16 , H04B1/525 , H04B1/715 , H04B15/00 , H04B1/7097 , H04B1/719 , H04B1/7107 , H04J11/00 , H04W4/80 , H04W84/12 , H04B1/62 , H04B1/12
Abstract: Technologies directed to digital active interference cancellation (d-AIC) for full duplex transmit-receive (TX-RX) concurrency. An integrated circuit can include first and second analog front-ends (AFE) and digital front-end (DFE) circuits and a digital AIC circuit that generates a scaled and delayed replica of a first quadrature (IQ) sample corresponding to first data transmitted by the first AFE circuit which is being coupled into the receiver as aggressor. The digital AIC circuit receives a second IQ sample from the second AFE circuit, the second IQ sample corresponding to second data being received by the second AFE circuit. The digital AIC circuit subtracts the scaled and delayed replica of the first IQ sample from the second IQ sample to obtain a third IQ sample and sends the third IQ sample to the second DFE circuit. Third IQ sample is the desired signal when d-AIC cancels the self-interference.
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公开(公告)号：US11284360B1
公开(公告)日：2022-03-22
申请号：US16745001
申请日：2020-01-16
Applicant: Amazon Technologies, Inc.
Inventor： Songping Wu , Sai Prashanth Chinnapalli
Abstract: Technologies directed to improving power for wireless transceivers are described. One method processes, in a first power mode, a first portion of a data packet, the first portion being modulated with a FSK modulation. The method determines a first gain value for an amplifier and determines that the first data packet has a second portion that is modulated with a PSK modulation. The method determines a receive signal strength indicator (RSSI) value associated with the first portion and determines that the RSSI does not exceed a threshold value corresponding to a throughput requirement. The method switches to a second power mode, the second power mode being higher in power than the first power mode. The method determines, in the second power mode, a second gain value for the amplifier and process the second portion of the first data packet. The second gain value is determined before the processing the second portion.
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公开(公告)号：US11071064B1
公开(公告)日：2021-07-20
申请号：US16745021
申请日：2020-01-16
Applicant: Amazon Technologies, Inc.
Inventor： Songping Wu , Sai Prashanth Chinnapalli
Abstract: Technologies directed to improving power for wireless transceivers are described. One method receives, in a low power mode, a data packet over a wireless link and determines a RSSI value and a receive signal quality indicator (RSQI) value. The method stores a record with the RSSI and RSQI values in memory. The method determines an average RSSI value and an average RSQI value from historical RSSI and RSQI values, respectively, stored in records. The method categorizes received data in a first channel quality indicator (CQI) category using the average RSSI value and the average RSQI value and configures the wireless device to operate in another power mode, responsive to the data being in the first CQI. The method processes a subsequent data packet while in the other power mode. In some cases, the other power mode is less than a maximum power mode specified by a wireless standard.
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公开(公告)号：US12008385B1
公开(公告)日：2024-06-11
申请号：US17360959
申请日：2021-06-28
Applicant: Amazon Technologies, Inc.
Inventor： F N U Rohit Kumar , Sai Prashanth Chinnapalli
CPC classification number: G06F9/44505 , G06F13/102
Abstract: The disclosure describes techniques for the isochronous transfer of data between a central device and one or more peripheral devices. For example, the central device may comprise any type of electronic device that is able to distribute data to peripheral devices using a wireless protocol. The isochronous transfer of data from the central device may provide an efficient method for wirelessly delivering data to multiple peripheral devices in an alternating pattern. In some examples, the isochronous transfer of data may help ensure that the peripheral devices receive timely and successful data transfers, improving the overall performance of the network of devices.
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Patent Agency Ranking
公开(公告)号：US11706716B1
公开(公告)日：2023-07-18
申请号：US17373467
申请日：2021-07-12
Applicant: Amazon Technologies, Inc.
Inventor： Songping Wu , Sai Prashanth Chinnapalli
CPC classification number: H04W52/0245 , H04B1/40 , H04B17/318 , H04L1/0026 , H04L1/20 , H04W52/20 , H04W52/241 , H04W52/245 , H04W88/06
Abstract: Technologies directed to improving power for wireless transceivers are described. One method determines, in a first mode, a first value associated with a wireless link and a second values associated with the wireless link, the first value being indicative of a first metric and the second value being indicative of a second metric different from the first metric. The first value and the second value collectively indicate a category of channel quality for the wireless link. The method determines that the wireless device can operate in a second mode for subsequent data based on the category of channel quality, wherein in the second mode the wireless device consumes less power than in the first power mode. The method receives, in the second mode, second data over the wireless link.
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公开(公告)号：US11206097B1
公开(公告)日：2021-12-21
申请号：US16813483
申请日：2020-03-09
Applicant: Amazon Technologies, Inc.
Inventor： Milos Jorgovanovic , Ganesha Batta , Sai Prashanth Chinnapalli
Abstract: A wireless headphone that receives a device identifier of an electronic device communicatively coupled to the wireless headphone and determines that the electronic device supports dynamic rate switching between a first data rate and a second data rate. The wireless headphone receives data from the electronic device at the second data rate and determines a packet error rate (PER) value associated with receiving the data. The wireless headphone requests the electronic device to transmit data at the second data rate.
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8.发明授权公开(公告)号：US11082270B1
公开(公告)日：2021-08-03
申请号：US16745010
申请日：2020-01-16
Applicant: Amazon Technologies, Inc.
Inventor： Songping Wu , Sai Prashanth Chinnapalli
Abstract: Technologies directed to improving signal quality in received wireless signals in the phase domain of shift keying demodulation are described. One method receives digital data, the digital data including a systematic error as a linear function of residual carrier frequency offset and phase noise (PN). The method extracts first phase data from the digital data, determines, in a phase domain, an estimate of the systematic error using historical phase error data of additional digital data received prior to the digital data, and generate second phase data by subtracting the estimate from the first phase data. The method determines a set of symbols from the second phase data and generates a bit sequence of a data packet from the set of symbols.
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公开(公告)号：US20240201779A1
公开(公告)日：2024-06-20
申请号：US18066703
申请日：2022-12-15
Applicant: Amazon Technologies, Inc.
Inventor： Zheda Li , Morris Yuanhsiang Hsu , Vivek Yenamandra , Aditya V. Padaki , Raghunandan M Rao , Abhishek Sanaka , Rohit Kumar , Sai Prashanth Chinnapalli
CPC classification number: G06F3/011 , G01S13/04 , H04N7/0255
Abstract: Techniques for a dynamic radar mode modulation feature are described herein. A computer system associated with a device may implement a first radar configuration for a radar sensor. The first radar configuration may correspond to a first mode and comprise a first frame per second rate and a first difference threshold. The computer system may receive first data from the radar sensor in the first radar configuration. The computer system may determine a presence of an object within a field of view of the radar sensor based on the first data and the first difference threshold. The computer system may instruct the device to turn on based on determining the presence of the user. The radar sensor may be instructed to implement a second radar configuration associated with a second mode.
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公开(公告)号：US11856256B1
公开(公告)日：2023-12-26
申请号：US17709198
申请日：2022-03-30
Applicant: Amazon Technologies, Inc.
Inventor： Zheda Li , Vivek Yenamandra , Aditya V Padaki , F N U Rohit Kumar , Morris Yuanhsiang Hsu , Sai Prashanth Chinnapalli
IPC: H04N21/442 , H04N21/443
CPC classification number: H04N21/44218 , H04N21/4436
Abstract: This disclosure describes, in part, techniques for using presence detection in order to switch between power modes of a display device. For instance, the display device may operate in a first power mode by deactivating a display. While operating in the first power mode, the display device may use a sensor to detect a presence of a possible object. The display device may then switch to a second power mode in order to verify that the possible object is an actual object. In response, the display device may switch to a third power mode by at least activating the display and presenting a user interface using the display. The display device may then receive an interaction. In response, the display device may switch to a fourth power mode by at least presenting content.
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