Apple Inc.
CONCURRENTLY REFRESHING MULTIPLE AREAS OF A DISPLAY DEVICE USING MULTIPLE DIFFERENT REFRESH RATES

Abstract:

This application relates to methods and apparatus to refresh a display device at various frequencies. Specifically, multiple areas of the display device may be refreshed concurrently at different frequencies. In this way, when static content is being displayed in certain areas of the display device, those certain areas can be refreshed at a lower rate than areas displaying dynamic content such as video or animation. By refreshing at lower rates, the energy consumed by the display device and subsystems associated with the display device can be reduced. Additionally, processes for reducing flicker when refreshing the display device at different refresh rates are disclosed herein.