公开(公告)号：WO2022055594A1

公开(公告)日：2022-03-17

申请号：PCT/US2021/039213

申请日：2021-06-25

Applicant: APPLE INC.

Inventor： RACHAKONDA, Ramana V. ,  GUPTA, Rohit K. ,  SIMERAL, Brad W. ,  HOLLAND, Peter F.

IPC: G06F1/3206 ,  G06F1/3228 ,  G06F1/3234 ,  G06F1/3287

Abstract: In an embodiment, a system may include one or more processors forming central processing units (CPUs) in the system, a display controller configured to display frames on a display device, a memory controller configured to control a memory, and a power management circuit. The power management circuit may be configured to establish one of a plurality of power states in the system. In a first power state, the display controller and the memory controller are powered on while the CPUs are powered off. The display controller may be configured to read a plurality of prerendered frames from the memory and display the plurality of prerendered frames at times specified for each of the plurality of prerendered frames.