公开(公告)号：US20240396655A1

公开(公告)日：2024-11-28

申请号：US18366134

申请日：2023-08-07

Applicant: Apple Inc.

Inventor： Haley A. Taylor ,  Daniel E. Loffgren ,  Glenn D. Henshaw ,  Kevin M. Duffy ,  Sean L. Carstensen

IPC: H04J3/06

Abstract: An electronic device can receive power from a powered accessory and can include a first communication system that communicates with the powered accessory; an internal clock; and a first processing system. Upon connection of the electronic device to the powered accessory, the first processing system can send a time update request to the powered accessory and can update the internal clock based on a time update received from the powered accessory. The powered accessory can include an energy storage device that delivers power to the electronic device; a second communication system that communicates with the electronic device; a real time clock; and a second processing system. Upon connection of the electronic device to the powered accessory and receiving the time update request from the electronic device the processing system can send the time update to the electronic device.

公开(公告)号：US11451931B1

公开(公告)日：2022-09-20

申请号：US17112376

申请日：2020-12-04

Applicant: Apple Inc.

Inventor： Sriram Hariharan ,  John D. Blackwell ,  Jonathan C. Shavit ,  Jay N. Bruins ,  Carter B. Peterson ,  Daniel E. Loffgren ,  Akifumi Kobashi ,  Jacob S. Weiss ,  Todd Wheeler

IPC: H04W4/029 ,  H04W4/38 ,  H04W76/10 ,  H04W56/00 ,  G06K9/62

Abstract: Immersive audio can be generated and/or updated in real-time as an accessory device presenting the audio is moved with respect to a computing device presenting accompanying video content. This real-time immersive audio is enabled by determining positions of the accessory device with respect to the computing device, based on real-time analysis of sensor information from the accessory device and the computing device. Accurate positions can be determined by synchronizing timestamped sensor data from the multiple devices through the use of a clock of a common wireless communication link (e.g., a Bluetooth connection), which may have lower drift than the global clocks of the devices themselves. Calculated offsets associated with differences between the clock of the wireless communication link and the global clocks of the multiple devices can be used to account for inaccuracies in the global clocks of the multiple devices with respect to one another.