公开(公告)号：US10990349B2

公开(公告)日：2021-04-27

申请号：US16141776

申请日：2018-09-25

Applicant: Apple Inc.

Inventor： Aarti Kumar ,  Ahmad Rahmati ,  Natalia A. Fornshell ,  Sriram Hariharan

IPC: H04R3/12 ,  H04L5/00 ,  G06F3/16

Abstract: A host device communicating with a plurality of accessory devices transmits audio data packets via a broadcast channel to the plurality of accessory devices. When one of the plurality of accessory devices determines an audio data packet has not been received, the accessory device sends a negative-acknowledgement signal (NACK) via a unicast channel. The NACK indicates that the at least one of the accessory devices did not receive at least one audio data packet. The host device retransmits the at least one audio data packet indicated as not being received via the broadcast channel to the plurality of accessory devices. Other aspects are also described and claimed.

公开(公告)号：US11119624B2

公开(公告)日：2021-09-14

申请号：US16366503

申请日：2019-03-27

Applicant: Apple Inc.

Inventor： Paul V. Johnson ,  Ahmad Rahmati ,  Chaohao Wang ,  Cheng Chen ,  Graham B. Myhre ,  Jiaying Wu ,  Paolo Sacchetto ,  Sheng Zhang ,  Yunhui Hou ,  Xiaokai Li ,  Tim H. Cornelissen

IPC: G06F3/0485 ,  G06F3/0481 ,  G06F3/0488 ,  G06F3/0484 ,  G06F3/01

Abstract: An electronic device may include a display for displaying image content to a user and dynamic image stabilization circuitry for dynamically compensating the image content if the device is moving unpredictably to help keep the image content aligned with the user's gaze. The electronic device may include sensors for detecting the displacement of the device. The dynamic image stabilization circuitry may include a usage scenario detection circuit and a content displacement compensation calculation circuit. The usage scenario detection circuit receives data from the sensors and infers a usage scenario based on the sensor data. The content displacement compensation calculation circuit uses the inferred usage scenario to compute a displacement amount by which to adjust image content. When motion stops, the image content may gradually drift back to the center of the display.

公开(公告)号：US10667157B2

公开(公告)日：2020-05-26

申请号：US16107934

申请日：2018-08-21

Applicant: Apple Inc.

Inventor： Ahmad Rahmati ,  Natalia A. Fornshell ,  Aarti Kumar

IPC: H04W24/08 ,  H04L12/26 ,  H04L29/06

Abstract: A source device can transmit initial streaming content to a playback device (e.g., wireless ear buds) using first settings and measure playback performance of the content at a plurality of times. The measured performance values can relate to a quality of communication of the initial streaming content between the source device and the playback device, e.g., relating to packet loss, retransmission rates and patterns, fluctuations in a playback (jitter) buffer, and/or other values. The measured performance values can be used to determine one or more second settings to be used for a playback of subsequent streaming content between the source device and the playback device. In this manner, each source device can account for variations in communication behavior specific to a user (e.g., due to differences in body type as electromagnetic waves travel through the body when a source device is in a pocket).

公开(公告)号：US20190317659A1

公开(公告)日：2019-10-17

申请号：US16366503

申请日：2019-03-27

Applicant: Apple Inc.

Inventor： Paul V. Johnson ,  Ahmad Rahmati ,  Chaohao Wang ,  Cheng Chen ,  Graham B. Myhre ,  Jiaying Wu ,  Paolo Sacchetto ,  Sheng Zhang ,  Yunhui Hou ,  Xiaokai Li ,  Tim H. Cornelissen

IPC: G06F3/0484 ,  G06F3/01 ,  G06F3/0481

Abstract: An electronic device may include a display for displaying image content to a user and dynamic image stabilization circuitry for dynamically compensating the image content if the device is moving unpredictably to help keep the image content aligned with the user's gaze. The electronic device may include sensors for detecting the displacement of the device. The dynamic image stabilization circuitry may include a usage scenario detection circuit and a content displacement compensation calculation circuit. The usage scenario detection circuit receives data from the sensors and infers a usage scenario based on the sensor data. The content displacement compensation calculation circuit uses the inferred usage scenario to compute a displacement amount by which to adjust image content. When motion stops, the image content may gradually drift back to the center of the display.

公开(公告)号：US11595316B2

公开(公告)日：2023-02-28

申请号：US16116010

申请日：2018-08-29

Applicant: Apple Inc.

Inventor： Aarti Kumar ,  Natalia A. Fornshell ,  Suraj Sumangala ,  Ahmad Rahmati

IPC: H04L47/25 ,  H04L47/2416 ,  H04L65/61

Abstract: A source device executing the application can transmit the streaming content to the playback device. The size of the buffer can be changed during the playback of streaming content. To perform the change seamlessly, embodiments can cause the application to provide the streaming content at an increased or decreased rate, depending on how the size of the playback buffer is to be changed. The new buffer size (i.e., smaller or larger amount) can provide improved playback of the streaming content, e.g., based on a latency-reliability tradeoff as determined using various factors (e.g., quality of connection between the devices). The changed rate for providing the streaming content can be achieved by slowing down or speeding up a clock signal that is provided to the application.

公开(公告)号：US20190373490A1

公开(公告)日：2019-12-05

申请号：US16107934

申请日：2018-08-21

Applicant: Apple Inc.

Inventor： Ahmad Rahmati ,  Natalia A. Fornshell ,  Aarti Kumar

IPC: H04W24/08 ,  H04L12/26 ,  H04L29/06

Abstract: A source device can transmit initial streaming content to a playback device (e.g., wireless ear buds) using first settings and measure playback performance of the content at a plurality of times. The measured performance values can relate to a quality of communication of the initial streaming content between the source device and the playback device, e.g., relating to packet loss, retransmission rates and patterns, fluctuations in a playback (jitter) buffer, and/or other values. The measured performance values can be used to determine one or more second settings to be used for a playback of subsequent streaming content between the source device and the playback device. In this manner, each source device can account for variations in communication behavior specific to a user (e.g., due to differences in body type as electromagnetic waves travel through the body when a source device is in a pocket).

公开(公告)号：US20190102143A1

公开(公告)日：2019-04-04

申请号：US16141776

申请日：2018-09-25

Applicant: Apple Inc.

Inventor： Aarti Kumar ,  Ahmad Rahmati ,  Natalia A. Fornshell ,  Sriram Hariharan

IPC: G06F3/16 ,  H04R3/12 ,  H04L5/00

Abstract: A host device communicating with a plurality of accessory devices transmits audio data packets via a broadcast channel to the plurality of accessory devices. When one of the plurality of accessory devices determines an audio data packet has not been received, the accessory device sends a negative-acknowledgement signal (NACK) via a unicast channel. The NACK indicates that the at least one of the accessory devices did not receive at least one audio data packet. The host device retransmits the at least one audio data packet indicated as not being received via the broadcast channel to the plurality of accessory devices. Other aspects are also described and claimed.