High display power consumption can lead to reduced battery life and/or device overheating. While reducing display brightness can mitigate these issues, lower brightness can make the displayed content harder for a user to view and reduces the quality of user experience. This disclosure describes techniques that enable specifying precise power budgets for an electronic device with emissive or non-emissive display. The precise power budgeting optimizes power consumption while maintaining display and visibility. Per the techniques, the power consumption of a display is determined in real time and the display brightness is dynamically adjusted to keep display power usage within a desired power budget. The power budget is adjusted based on the device temperature to ensure that the device operates within safe thermal limits. For non-emissive displays, an image gain factor can be used to recoup at least a portion of the final lost image luminance when backlight power is reduced. A feedback controller is used to maintain smooth brightness transitions as the display power consumption changes, and to determine acceptable quality loss under the current viewing conditions.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.