公开(公告)号：US11184810B2

公开(公告)日：2021-11-23

申请号：US16540301

申请日：2019-08-14

Applicant: Apple Inc.

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

IPC: H04W36/00 ,  H04W64/00 ,  H04W36/30 ,  H04W76/15

Abstract: Methods and apparatuses are presented to locate a wireless communication device. A target device may be out of range of a source device for normal ranging communications according to a first radio access technology (RAT), such as ultra wideband (UWB) communications. A source device may therefore modify communications according to the first RAT, to increase the transmit power, while removing the data payload. The target device may utilize the signal strength and angle of arrival of the modified communications to guide the user to move toward the source device, e.g., until the target device is within range to perform normal ranging communications. A second RAT, such as Bluetooth, may be used to communicate between the two devices while the target device is out of range of the first RAT. For example, the target device may use the second RAT to communicate to the source device to start/stop transmitting modified communications.

公开(公告)号：US20210041292A1

公开(公告)日：2021-02-11

申请号：US16536233

申请日：2019-08-08

Applicant: Apple Inc.

Inventor： Chia-Chi Chen ,  Vusthla Sunil Reddy ,  Sireesha Ramisetti ,  Peter M. Agboh ,  Mohit Narang ,  Vijendrakumar K. Ashiwal

IPC: G01J3/42 ,  G01N21/3581

Abstract: Embodiments are disclosed for terahertz spectroscopy and imaging in dynamic environments. In an embodiment, a transmitter of an electronic device emits a continuous electromagnetic (EM) wave in the terahertz (THz) frequency band into a dynamic environment that includes a transmission medium that changes over time. A receiver of the electronic device, receives an EM wave reflected off an object in the environment and determines a spectral response of the reflected EM wave. The spectral response includes absorption spectra at a frequency in the THz frequency band that is indicative of a known target transmission medium. The absorption spectra of the target transmission medium and a path length of the reflected EM wave signal are used to obtain the concentration level of the target transmission medium from a reference library of known concentration levels.

公开(公告)号：US10681773B2

公开(公告)日：2020-06-09

申请号：US16238750

申请日：2019-01-03

Applicant: APPLE INC.

Inventor： Lei Li ,  Xiaojun Chen ,  Vusthla Sunil Reddy ,  Peter M. Agboh ,  Mohit Narang

IPC: H04W88/04 ,  H04L5/00 ,  H04W84/18 ,  H04W72/08 ,  H04W72/04 ,  H04W88/06 ,  H04W4/80 ,  H04L1/00

Abstract: Exemplary embodiments include a system having a first wireless audio output device and a second wireless audio output device. One of the first or second audio output devices is configured to one of connect as a slave to a source device in a first piconet and connect as a master to the other one of the first or second audio output devices in a second piconet. The one of the first or second wireless audio output devices determines whether an audio packet transmitted by the source device via the first piconet was received by the first wireless audio output device and the second wireless audio output device, and, when at least one of the first wireless audio output device or the second wireless audio output device did not receive the audio packet, the audio packet is exchanged between the first and second wireless audio output devices via the second piconet.

公开(公告)号：US10517111B2

公开(公告)日：2019-12-24

申请号：US15708746

申请日：2017-09-19

Applicant: APPLE INC.

Inventor： Lei Li ,  Xiaojun Chen ,  Vusthla Sunil Reddy ,  Mohit Narang ,  Qiyang Wu ,  Peter M. Agboh

IPC: H04W4/00 ,  H04W72/12 ,  H04W72/04 ,  H04W84/20 ,  H04W4/80 ,  H04W4/70

Abstract: Exemplary embodiments include a method performed by a wireless device configured as a slave in a first piconet and configured as a master in a second piconet. The method includes determining whether the wireless device has data to transmit over the second piconet to an other wireless device, determining an availability of a full slot in a first piconet schedule, selecting a data transmission scheme based on the availability of the full slot in the first piconet schedule and transmitting the data via the second piconet to the other wireless device in accordance with the selected data transmission scheme.

公开(公告)号：US10416747B2

公开(公告)日：2019-09-17

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

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：US20190097664A1

公开(公告)日：2019-03-28

申请号：US15716430

申请日：2017-09-26

Applicant: Apple Inc.

Inventor： Xinping ZENG ,  Mohit Narang ,  Peter M. Agboh ,  Vusthla Sunil Reddy

IPC: H04B1/30 ,  H03H7/06

CPC classification number: H04B1/30 ,  H03D1/00 ,  H03D1/22 ,  H03D3/005 ,  H03D3/008 ,  H03H7/06 ,  H04B5/0081 ,  H04B2001/305

Abstract: A transceiver that allows dynamic high-pass filter (HPF) cut-off frequency adjustment may include a mixer circuit to mix a local oscillator (LO) signal with a receive (RX) signal received from a transmitter to generate a baseband signal. The transceiver may further include a high-pass filter (HPF) having an adjustable cut-off frequency that is used to reduce a DC offset of the baseband signal. A control circuit can dynamically control components of the HPF to set the adjustable cut-off frequency at a first frequency during a first time period and at a second frequency during a second time period.

公开(公告)号：US20180146435A1

公开(公告)日：2018-05-24

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

IPC: H04W52/20 ,  H04W52/36 ,  H04W52/24 ,  H04L12/26

CPC classification number: H04W52/20 ,  H04L43/0847 ,  H04L43/16 ,  H04W4/80 ,  H04W52/245 ,  H04W52/246 ,  H04W52/367

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.

公开(公告)号：US09913223B2

公开(公告)日：2018-03-06

申请号：US14746133

申请日：2015-06-22

Applicant: APPLE INC.

Inventor： Mohit Narang ,  Peter M. Agboh ,  Qiyang Wu ,  Ruben Caballero ,  Vusthla Sunil Reddy ,  Xi Yang

IPC: G08C17/00 ,  H04W52/20 ,  H04W4/00 ,  H04L12/26 ,  H04W52/24 ,  H04W52/36

CPC classification number: H04W52/20 ,  H04L43/0847 ,  H04L43/16 ,  H04W4/80 ,  H04W52/245 ,  H04W52/246 ,  H04W52/367

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 coupled via a data link. Once the internal amplifier has reached its maximum power, the host device may determine the strength of the data link between it and the remote device. If the strength is low, it is an indication that further increases in signal power by the host device may have little effect on the link. If the signal strength from the remote device is sufficient, the host device determines an error rate. If the error rate is sufficiently low, the host device will not increase its signal output power. However, if the error rate is too high, the host device may increase power from its external amplifier to improve the error rate of the data link.

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：US11108424B2

公开(公告)日：2021-08-31

申请号：US16517383

申请日：2019-07-19

Applicant: Apple Inc.

Inventor： Stephen T. Schooley ,  Ross D. Arriens ,  Sara Rusignuolo ,  Craig S. Ogden ,  Ho Cheung Chung ,  Vusthla Sunil Reddy ,  Jeremy D. Bataillou ,  Xinping Zeng

IPC: H04B1/3827 ,  H04B1/3888 ,  H04M1/72412 ,  H04M1/72454 ,  H04W12/06

Abstract: Accessory devices are described herein. An accessory device may include a receptacle for receiving an electronic device. The accessory device may include a case that covers the housing of the electronic device, or a folio that additionally includes a cover can conceal the display of the electronic device. Accessory devices described herein further include wireless circuitry used to communicate with wireless circuitry in the electronic device. The wireless circuitry can be used for various functions and features. For instance, the wireless circuitry in the accessory device can respond to authentication requests from the electronic device, and/or to send authentication requests to the electronic device. Further, the wireless circuitry in the accessory device can send information to the electronic device. Such information may include properties of the accessory device, or information stored on the accessory device that is presented on a display of the electronic device.