公开(公告)号：US20200380926A1

公开(公告)日：2020-12-03

申请号：US16888606

申请日：2020-05-29

Applicant: Apple Inc.

Inventor： Simon M. DOUGLAS ,  Ross THOMPSON ,  Russell A. BLAINE ,  Arthur L. SPENCE ,  Brad W. SIMERAL ,  Giovanni M. AGNOLI ,  Chendi ZHANG ,  Jacob Z. WEISS ,  Yiqiang NIE ,  Brent W. SCHORSCH

IPC: G09G3/36 ,  G06F1/3218

Abstract: A device implementing a system for displaying an image includes a processor configured to, generate, during a first power state of a device, a data structure specifying image frames and a respective display time for each of the image frames, and retrieve, during a second power state of the device and from the data structure, an image frame based on the respective display time for the image frame. The at least one processor is further configured to display, during a third power state of the device, the retrieved image frame on a display of the device.

公开(公告)号：US20210365389A1

公开(公告)日：2021-11-25

申请号：US17397966

申请日：2021-08-09

Applicant: Apple Inc.

Inventor： Jeremy C. ANDRUS ,  Joseph R. Auricchio ,  Russell A. BLAINE ,  Daniel A. CHIMENE ,  Simon M. DOUGLAS ,  Landon J. FULLER ,  Yevgen GORYACHOK ,  John K. KIM-BIGGS ,  Arnold S. LIU ,  James M. MAGEE ,  Daniel A. STEFFEN ,  Roberto G. YEPEZ

IPC: G06F13/10 ,  G06F13/40 ,  G06F9/54 ,  G06F9/445 ,  G06F13/16

Abstract: Embodiments described herein provide techniques to manage drivers in a user space in a data processing system. One embodiment provides a data processing system configured perform operations, comprising discovering a hardware device communicatively coupled to the communication bus, launching a user space driver daemon, establishing an inter-process communication (IPC) link between a first proxy interface for the user space driver daemon and a second proxy interface for a server process in a kernel space, receiving, at the first proxy interface, an access right to enable access to a memory buffer in the kernel space, and relaying an access request for the memory buffer from the user space driver daemon via a third-party proxy interface to enable the user space driver daemon to access the memory buffer, the access request based on the access right.