Background plateau manipulation for display device power conservation
Described herein are systems and methods that that reduce power consumption for an electronics device that includes a display. The power conservation systems and methods alter background video information not needed for interactive use when a user returns to a display after some period of inactivity. Power conservation also preserves video information for one or more graphical user interface items. Preserving a graphics item maintains a person's ability to detect the graphical user interface item, and return to it at a later time, even though the background video information has been altered to conserver power.
1. A method for reducing power consumed by an electronics device that includes a display device, the method comprising:
altering background video information to produce altered background video information such that the display device will consume less power when displaying the altered background video information than an amount of power that would be required to display the background video information without the alteration;
at least partially altering video information for a graphical user interface item such that the alteration of the video information for the graphical user interface item is different than the alteration of the background video information; and
displaying the altered background video information with the at least partially altered video information for the graphical user interface item.
2. The method of claim 1 , wherein the alteration of the background video information reduces average luminance of the background video information relative to average luminance for the graphical user interface item.
3. The method of claim 1 , wherein the alteration of the background video information increases the difference between an average luminance of the background video information and an average luminance for the graphical user interface item.
4. The method of claim 1 , wherein the alteration of the background video information comprises a luminance reduction for the background video information.
5. The method of claim 1 , wherein at least partially altering the video information for the graphical user interface item maintains a minimum luminance detection criterion for the graphical user interface item relative to the altered background video information.
6. The method of claim 5 , wherein at least partially altering the video information for the graphical user interface item maintains a minimum luminance difference between an average luminance for video information for the graphical user interface item and an average luminance for the altered background video information.
7. The method of claim 1 , wherein at least partially altering the video information for the graphical user interface item maintains characteristic color video information for the graphical user interface item.
8. The method of claim 1 , wherein at least partially altering the video information for the graphical user interface item maintains characteristic edge detection video information for the graphical user interface item that contributes to edge and/or shape recognition of the graphics component.
9. The method of claim 1 , wherein an average luminance for the at least partially altered video information for the graphical user interface item is greater than an average luminance for the altered background video information.
10. The method of claim 1 , wherein the graphical user interface item includes one of: an icon that permits a user of the electronics device to initiate a program, a toolbar, and a clock.
11. The method of claim 1 , wherein the alteration of the background video information increases contrast between the background and the graphical user interface item.
12. The method of claim 1 , wherein the display device is an LCD device.
13. The method of claim 12 , further comprising reducing the video information for the graphical user interface item to a maximum luminance that permits a reduction in backlight luminance level for an LCD display device.
14. The method of claim 1 , wherein the display device is included in one of: a laptop computer, a handheld computer, a portable phone or a portable music player.
15. A method for reducing power consumed by an electronics device that includes a display device, the method comprising:
altering video information for a graphical user interface item at a first rate to produce altered video information for the graphical user interface item;
altering background video information at a second rate, that is greater than the first rate, to produce altered background video information such that the display device will consume less power when displaying the altered background video information than an amount of power that would be required to display the background video information without the alteration; and
displaying the altered video information for the graphical user interface item and the background video information.
16. The method of claim 15 , wherein the second rate includes a higher frequency of alterations than the first rate.
17. The method of claim 15 , wherein the second rate and the first rate are altered at about the same frequency and the second rate includes a larger alteration than the first rate each alteration.
18. The method of claim 17 , wherein the larger alteration includes a larger luminance reduction for the background video information than a luminance reduction for the graphical user interface item video information.
19. The method of claim 15 , further comprising setting a power conservation scheme that selects the at least one graphical user interface item.
20. A non-transitory computer readable medium including instructions for reducing power consumed by an electronics device that includes a display device, the computer-readable medium comprising:
instructions for altering background video information to produce altered background video information such that the display device will consume less power when displaying the altered background video information than an amount of power that would be required to display the background video information without the alteration;
instructions for at least partially altering video information for a graphical user interface item such that the alteration of the video information for the graphical user interface item is different than the alteration of the background video information; and
instructions for displaying the altered background video information with the at least partially altered video information for the graphical user interface item.