公开(公告)号：US11150717B2

公开(公告)日：2021-10-19

申请号：US16569383

申请日：2019-09-12

Applicant: Apple Inc.

Inventor： Diego C. Hernandez ,  Harneet Singh Oberoi ,  Indranil S. Sen ,  Kevin C. Camilleri ,  Raghuram C. Kamath ,  Vusthla Sunil Reddy

IPC: G06F1/00 ,  G06F1/3212 ,  G06F1/3234 ,  G06F1/3203 ,  G06F1/26

Abstract: A technique for dynamically adjusting power use of an input/output (I/O) interface of an electronic device is provided. The electronic device includes an input/output (I/O) interface that facilitates electronic communications with a receiving electronic device, at a particular transmission rate that is dynamically changeable by the electronic device. Transmission power and transmission rate adjustment circuitry determines whether a step-down in a transmission power used for signal transmission at the particular transmission rate is desirable. When desirable, the transmission power is dynamically adjusted down one step, such that less power is used by the I/O interface during the electronic communications.

公开(公告)号：US10784931B2

公开(公告)日：2020-09-22

申请号：US16003986

申请日：2018-06-08

Applicant: Apple Inc.

Inventor： Raghuram C. Kamath ,  Diego C. Hernandez ,  Harneet Singh Oberoi ,  Indranil S. Sen

IPC: H04W72/14 ,  H04B7/0452 ,  H04L29/06 ,  H04W40/04 ,  H04W84/12

Abstract: Systems, methods, and devices for grouping client devices based on sensor data in an assisted wireless communication system are provided. Sensor data may include device mobility, device type, and device application data usage, among other characteristics. An assisted wireless communication system may include client devices sending data to an access point. The clients may send conventional protocol data over a channel and, concurrently, send sensor data over an alternative channel. In some cases, client devices may exchange their protocol data, modify their own protocol data based on the exchanged data, and send the modified protocol data to the access point. This may allow the clients to adjust their grouping.

公开(公告)号：US20200067565A1

公开(公告)日：2020-02-27

申请号：US16106354

申请日：2018-08-21

Applicant: Apple Inc.

Inventor： Xiaoming Yu ,  Alejandro J. Marquez ,  Indranil S. Sen ,  Peter M. Agboh ,  Shang-Te Yang ,  Vusthla Sunil Reddy

IPC: H04B1/7103

Abstract: Methods and apparatuses are presented to reduce multiuser interference resulting from two or more overlapping ultra wideband (UWB) transmissions by randomizing the start time of packets and/or bursts within the packets. A random offset time may be generated for a packet, and transmission of the packet may be arbitrarily delayed by that random offset time, relative to an earlier time at which the packet is prepared for transmission. A random offset time may be generated for a pulse burst within a symbol of a packet, and transmission of the burst may be delayed by that random offset time, relative to a nominal transmission window within the symbol. The burst may therefore occupy a portion of a guard period following the nominal transmission window. Either procedure, or both procedures, may be used to reduce multiuser interference between two concurrently transmitted packets by randomizing overlap occurring between the bursts.

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.

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

IPC: H04W12/08 ,  H04L29/06 ,  H04W4/02 ,  H04L29/08

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.

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

IPC: H04B1/3827 ,  G01S15/02 ,  G01S7/539 ,  H04B1/034 ,  H04W52/28 ,  H04R3/00 ,  H04W52/02

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.

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

IPC: H04W4/04 ,  H04W24/08

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.

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

IPC: H04L5/14 ,  H04W4/00 ,  H03F3/24 ,  H03H9/17 ,  H03H9/02 ,  H03H9/64 ,  H04B7/0413 ,  H04W84/12

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.

公开(公告)号：US20170336850A1

公开(公告)日：2017-11-23

申请号：US15161776

申请日：2016-05-23

Applicant: APPLE INC.

Inventor： Diego C. Hernandez ,  Harneet Singh Oberoi ,  Indranil S. Sen ,  Kevin C. Camilleri ,  Raghuram C. Kamath ,  Vusthla Sunil Reddy

IPC: G06F1/32

Abstract: A technique for dynamically adjusting power use of an input/output (I/O) interface of an electronic device is provided. The electronic device includes an input/output (I/O) interface that facilitates electronic communications with a receiving electronic device, at a particular transmission rate that is dynamically changeable by the electronic device. Transmission power and transmission rate adjustment circuitry determines whether a step-down in a transmission power used for signal transmission at the particular transmission rate is desirable. When desirable, the transmission power is dynamically adjusted down one step, such that less power is used by the I/O interface during the electronic communications.

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

CPC classification number: G01S3/46 ,  G01S3/48 ,  G01S3/50

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.