公开(公告)号：WO2023064139A1

公开(公告)日：2023-04-20

申请号：PCT/US2022/045705

申请日：2022-10-04

Applicant: APPLE INC.

Inventor： SANTHANAM, Karthick ,  CHIEN, Eric, L. ,  GARRIDO, Christopher, M. ,  HORN, Kyle, W. ,  BAIRD, Ian, J. ,  SUN, Qian ,  BIDERMAN, David, L.

IPC: H04N7/14

Abstract: The subject technology receives, at a local device, a requested camera format based on specifications of a display associated with a remote device. The remote device and the local device are devices participating in a video conference. The requested camera format includes a first resolution. Camera formats supported by a camera associated with the local device are determined. If a second resolution of a first camera format matches among the supported camera formats matches with the first resolution, the first camera format is selected for capturing the video stream by the camera. Otherwise, a second camera format among the supported camera formats is determined for capturing the video stream so as to maximize a field of view of the video stream relative to other camera formats supported by the camera.

公开(公告)号：WO2020010515A1

公开(公告)日：2020-01-16

申请号：PCT/CN2018/095137

申请日：2018-07-10

Applicant: APPLE INC. ,  GUO, Shu

Inventor： GUO, Shu ,  YANG, Xiangying ,  ZHANG, Lijia ,  SUN, Qian ,  LIANG, Huarui ,  XU, Fangli ,  CHEN, Yuqin ,  HU, Haijing ,  ZHANG, Dawei

IPC: H04L29/06

Abstract: Techniques for identity-based message integrity protection and verification between a user equipment (UE) and a wireless network entity, include use of signatures derived from identity-based keys. To protect against attacks from rogue network entities before activation of a security context with a network entity, the UE verifies integrity of messages by checking a signature using an identity-based public key PK ID derived by the UE based on (i) an identity value (ID) of the network entity and (ii) a separate public key PK PKG of a private key generator (PKG) server. The network entity generates signatures for messages using an identity-based private key SK ID obtained from the PKG server, which generates the identity-based private key SK ID using (i) the ID value of the network entity and (ii) a private key SK PKG that is known only by the PKG server and corresponds to the public key PK PKG .