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公开(公告)号：US20200100195A1
公开(公告)日：2020-03-26
申请号：US16217364
申请日：2018-12-12
Applicant: Apple Inc.
Inventor： Dhruv Khati , Shiva Krishna Narra , Sanjeevi Balasubramanian , Anjaneyulu Maganti , Lydi Smaini , Tarik Tabet , Mohit Narang , Tiberiu Muresan
Abstract: A power control method for device-to-device communication includes dynamically backing off transmit power value for synchronization signals and discovery messages when the distance between the two devices is less than a pre-determined threshold. The threshold distance may correspond to a distance where the receive power may exceed a pre-determined value. Embodiments may loop the transmit power of synchronization signals between a default transmit power value and backed-off values in consecutive slots of each frame.
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公开(公告)号：US10477741B1
公开(公告)日：2019-11-12
申请号：US15019607
申请日：2016-02-09
Applicant: Apple Inc.
Inventor： Mun Soo Bae , Bing Jiang , Haejoon Jung , Indranil S. Sen , Mohit Narang , Ruben Caballero
IPC: H05K9/00
Abstract: An inductive power transmission system electromagnetic field shielding apparatus includes an enclosure. The enclosure is configured to surround an electronic device and an inductive power transmitter that inductively transmits power to the electronic device. A communication window or high pass filter is formed in the enclosure. The communication window may include an arrangement of one or more conductive materials defining one or more apertures. The enclosure and the communication window block passage of magnetic flux generated by the inductive power transmitter. The communication window allows passage of communication transmissions associated with the electronic device.
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公开(公告)号：US10187856B2
公开(公告)日：2019-01-22
申请号：US15874678
申请日：2018-01-18
Applicant: Apple Inc.
Inventor： Mohit Narang , Peter M. Agboh , Qiyang Wu , Ruben Caballero , Vusthla Sunil Reddy , Xi Yang
Abstract: A host device is configured to increase the power output by an internal amplifier of its wireless chipset in response to requests from a remote device. Once the internal amplifier has reached its maximum power, further requests for power increases from the remove device do not similarly lead to automatic power increases being delivered by a external amplifier of the host device. Rather, the host device determines the strength of the link between it and the remote device. If the signal strength is too low, it is an indication that the signal power output by the remote device may not be sufficient to maintain the link and that any further increases in signal power by the host device will have little or no effect on the link. However, if the signal strength from the remote device is sufficient, the host device determines an error rate between it and the remote device. If the error rate is sufficiently low to maintain the link, then the host device will not further increase its signal output power. However, if the error rate is too high, the host device will turn on and/or increase power from its external amplifier to boost the power of its output signal and, thus, improve the error rate between it and the remote device.
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公开(公告)号：US10158997B2
公开(公告)日：2018-12-18
申请号：US15468016
申请日：2017-03-23
Applicant: Apple Inc.
Inventor： Alejandro J. Marquez , Tushar R. Shah , Mohit Narang , Indranil S. Sen , Shang-Te Yang
Abstract: A wireless network may include devices that wirelessly transmit and receive packets. Each packet may include a preamble, a start-of-frame delimiter, a physical layer header, a sequence of symbols between the start-of-frame delimiter and the physical layer header, and a data payload. The sequence of symbols may have a pattern that is resistant to spoofing attacks. A receiving device may have a correlator that correlates known symbols against the symbols in the sequence using overlapping three-symbol-length correlation windows. Early arrival peaks in the output of the correlator may be used to correct time stamp information in the packets and late arrival peaks corresponding to spoofed signals from an attacker may be ignored. Time stamp information may be processed to determine ranges between transmitting and receiving devices.
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公开(公告)号：US10063964B2
公开(公告)日：2018-08-28
申请号：US15446793
申请日：2017-03-01
Applicant: Apple Inc.
Inventor： Ruben Caballero , Michael DiVincent , Indranil S. Sen , Robert W. Schlub , Mohit Narang , Ricardo R. Velasco , Christopher B. Crowe , Scott Vernon
CPC classification number: H04R3/00 , G01S7/539 , G01S15/02 , H04B1/0343 , H04B1/3838 , H04B1/385 , H04M2250/12 , H04W52/0209 , H04W52/282 , Y02D70/00 , Y02D70/142 , Y02D70/144 , Y02D70/164 , Y02D70/166 , Y02D70/23 , Y02D70/26 , Y02D70/40
Abstract: An electronic device may include wireless circuitry that is configured to transmit wireless signals during operation. A maximum transmit power level may be established that serves as a cap on how much power is transmitted from the electronic device. Adjustments may be made to the maximum transmit power level in real time based on sensor signals and other information on the operating state of the electronic device. The sensor signals may include motion signals from an accelerometer. The sensor signals may also include ultrasonic sound detected by a microphone. Device orientation data may be used by the device to select whether to measure the ultrasonic sound using a front facing or rear facing microphone. Maximum transmit power level may also be adjusted based on whether or not sound is playing through an ear speaker in the device.
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Patent Agency Ranking
公开(公告)号：US10020563B2
公开(公告)日：2018-07-10
申请号：US15795810
申请日：2017-10-27
Applicant: Apple Inc.
Inventor： Ruben Caballero , Mattia Pascolini , Mohit Narang , Matt A. Mow , Robert W. Schlub
IPC: H01Q1/24 , H01Q21/00 , H04M1/02 , H01Q9/04 , H01Q9/42 , H01Q21/28 , H01Q7/00 , H04B1/401 , H04B7/06
CPC classification number: H01Q1/243 , H01Q7/00 , H01Q9/0421 , H01Q9/42 , H01Q21/28 , H04B1/401 , H04B7/0602 , H04B7/0689 , H04M1/0202
Abstract: Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry and first and second antennas. An electronic device may include a housing. The first antenna may be located at an upper end of the housing and the second antenna may be located at a lower end of the housing. A peripheral conductive member may run around the edges of the housing and may be used in forming the first and second antennas. The radio-frequency transceiver circuitry may have a transmit-receive port and a receive port. Switching circuitry may connect the first antenna to the transmit-receive port and the second antenna to the receiver port or may connect the first antenna to the receive port and the second antenna to the transmit-receive port.
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公开(公告)号：US20180091952A1
公开(公告)日：2018-03-29
申请号：US15619171
申请日：2017-06-09
Applicant: Apple Inc.
Inventor： Amit S. Sant , Alejandro J. Marquez , Indranil S. Sen , Mohit Narang , Shang-Te Yang
CPC classification number: H04W4/029 , G01S5/00 , G01S5/12 , G01S5/14 , H04W4/023 , H04W4/024 , H04W4/026 , H04W4/33 , H04W64/00 , H04W88/02
Abstract: Methods and devices useful in performing precise indoor localization and tracking are provided. By way of example, a method includes locating and tracking, via a first wireless electronic device, a plurality of other wireless electronic devices within an indoor environment. The method also includes performing front-back detection, performing stationary node detection, performing angle of arrival (AoA) error correction, and performing field of view (FOV) filtering. Performing indoor localization and tracking of the plurality of other wireless electronic devices includes providing an indication of a physical location of the plurality of other wireless electronic devices within the indoor environment.
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公开(公告)号：US20180084456A1
公开(公告)日：2018-03-22
申请号：US15708521
申请日：2017-09-19
Applicant: APPLE INC.
Inventor： Anatoli GOSTEV , Louay Alsakka , Axel Berny , Tad Dreier , Joachim Hammerschmidt , Lei Li , Xiaojun Chen , Vusthla Sunil Reddy , Peter M. Agboh , Mohit Narang
Abstract: Exemplary embodiments include a system having a first wireless audio output device configured to connect to a source device via a first piconet and a second wireless audio output device configured to connect to the first wireless audio output device via a second piconet. A schedule of the first piconet includes a plurality of slots associated with an audio packet, a first subset of the slots used by the source device to transmit the audio packet, the first and second wireless audio output devices tuning to the first piconet to listen for the transmissions of the audio packet, and when, after a last one of the first subset of slots, the first or second wireless audio output devices did not receive the audio packet, the first and second wireless audio output devices exchange information via the second piconet such that the both wireless audio output device receive the audio packet.
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公开(公告)号：US20170373819A1
公开(公告)日：2017-12-28
申请号：US15189874
申请日：2016-06-22
Applicant: APPLE INC.
Inventor： Hsin-Yuo Liu , Peter M. Agboh , Mohit Narang , Indranil S. Sen , Nicholas M. McDonnell , Chia-Yiaw Chong
CPC classification number: H04L5/1461 , H03F3/245 , H03F3/68 , H03F2200/111 , H03F2200/451 , H03H9/02007 , H03H9/171 , H03H9/64 , H04B7/0413 , H04L5/0023 , H04L5/0028 , H04L5/0066 , H04W4/80 , H04W84/12 , H04W88/06
Abstract: Devices and systems useful in concurrently receiving and transmitting Wi-Fi signals and Bluetooth signals in the same frequency band are provided. By way of example, an electronic device includes a transceiver configured to transmit data and to receive data over channels of a first wireless network and a second wireless network concurrently. The transceiver includes a plurality of filters configured to allow the transceiver to transmit the data and to receive the data in the same frequency band by reducing interference between signals of the first wireless network and the second wireless network.
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公开(公告)号：US20170242092A1
公开(公告)日：2017-08-24
申请号：US15050153
申请日：2016-02-22
Applicant: Apple Inc.
Inventor： Alejandro J. Marquez , Mohit Narang , Ruben Caballero , Indranil S. Sen , Shang-Te Yang
IPC: G01S3/46
Abstract: Systems, methods, and devices are provided to estimate angle of arrival of wireless signals. An electronic device may include two or more antennas that receive a wireless transmission. The wireless transmission includes a first frequency signal at a first frequency and a second frequency signal at a second frequency. The electronic device includes angle of arrival logic that may determine one or more angles of arrival of the wireless transmission to the electronic device using phase difference on arrival based on each of the first and second frequency signals.
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