POWER CONSERVATION FOR MOBILE DEVICE DISPLAYS

• US 20100317408A1
• Filed: 12/23/2009
• Published: 12/16/2010
• Est. Priority Date: 06/16/2009
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Durg, Ajaya, Li, Qingfeng, Ferren, Bran, Gandhi, Prashant, Krishnamurthy, Lakshman
• Granted Patent: US 8,446,398 B2
• Time in Patent Office: Days
• US Class Current: 455/566
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06F 1/3265 Power saving in display device
• CPC Class Codes: G06F 1/3287 by switching off individual functional units in the computer system
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2320/0686 with two or more screen areas displaying information with different brightness or colours
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/342 using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
• CPC Class Codes: H04W 52/0209 in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/027 by controlling a display operation or backlight unit
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Power conservation for mobile device displays. An embodiment of a method includes generating display images for a display screen of a mobile device, and transitioning the mobile device to a reduced power consumption state. The reduced power consumption state includes reducing one or more illumination factors for the display screen; and reducing one or more animation factors for the display screen.

Claims

1. A method comprising:

generating display images for a display screen of a mobile device;

transitioning the mobile device to a reduced power consumption state, wherein transitioning to the reduced power consumption state includes;

reducing one or more illumination factors for the display screen; and

reducing one or more animation factors for the display screen.

2. The method of claim 1, wherein the reduction of the one or more illumination factors and the one or more animation factors is based at least in part on a type of the display screen for the mobile device.

3. The method of claim 1, wherein reducing the one or more illumination factors includes reducing a level of illumination for the display screen.

4. The method of claim 1, wherein reducing the one or more illumination factors includes transitioning a background or foreground illumination to a color that requires less power than a previous color.

5. The method of claim 1, wherein reducing the one or more illumination factors includes turning off a background illumination for the display screen.

6. The method of claim 1, wherein reducing the one or more illumination factors includes turning off one or more but less than all of a plurality of sectors of a background illumination for the display screen.

7. The method of claim 1, wherein further reducing the one or more illumination factors includes turning off one or more but less than all of a plurality of sectors of the display screen.

8. The method of claim 1, wherein reducing the one or more animation factors includes changing an animation to a color that requires less power than a previous color.

9. The method of claim 1, wherein reducing the one or more animation factors includes capturing a series of still frames of an animation and replacing the animation with a sequence of the still frames.

10. The method of claim 1, wherein reducing the one or more animation factors includes capturing a single still frame of an animation and replacing the animation with the still frame.

11. A mobile device comprising:

a display screen to display elements, the elements including one or more animations;

an internal power supply to supply power to the mobile device; and

a power management system, the power management system to reduce power consumption related to the operation of the display through changes in one or more illumination factors for the display screen and changes in one or more animation factors for the display screen.

12. The mobile device of claim 11, wherein the power management system includes a processor of the mobile device.

13. The mobile device of claim 11, wherein the power management system includes a dedicated power manager element for the mobile device.

14. The mobile device of claim 11, wherein the power management system is to reduce power by gradually imposing the changes in the one or more illumination factors for the display screen and the one or more animation factors for the display screen based at least in part on a power state for the internal power supply.

15. The mobile device of claim 11, further comprising a memory containing a power setting, and wherein the power management system is to impose the changes in the one or more illumination factors for the display screen and the one or more animation factors for the display screen based on the power setting.

16. The mobile device of claim 11, wherein the internal power supply is a rechargeable battery.

17. The mobile device of claim 11, wherein the display screen is operable without a backlight, and wherein the changes to the one or more illumination factors includes turning off background illumination.

18. The mobile device of claim 11, wherein the display screen is an organic light emitting diode (OLED).

19. The mobile device of claim 11, wherein the display screen uses a backlight, and wherein the changes to the one or more illumination factors includes turning off the backlight to one or more but less than all of a plurality of sectors of the display screen.

20. The mobile device of claim 11, further comprising a location determination element, and wherein the changes in the one or more illumination factors and one or more animation factors are based at least in part on a physical location of the mobile device.

21. A system comprising:

a display screen to display elements, the elements including one or more animations;

a rechargeable battery to power the mobile device;

a power management system, the power management system to reduce power consumption related to the operation of the display through changes in one or more illumination factors for the display screen and changes in one or more animation factors for the display screen;

a transmitter to transmit data and a receiver to receive data, including data for display on the display screen; and

a dipole antenna for the transmission and reception of data.

22. The system of claim 21, wherein the system includes a plurality of power states, one or more the plurality of power states including a certain level of illumination factors and animation factors for the display screen.

23. The system of claim 22, wherein a transition from a first power state to a second power state includes one or more of a change in illumination to reduce power consumption or a change in animation to reduce power consumption.

24. The system of claim 23, wherein the transition to the second power state includes a change to one or more foreground or background colors to colors that require less power to display.

25. The system of claim 23, wherein the transition to the second power state includes elimination of background illumination.

26. The system of claim 23, wherein the transition to the second power state includes a transformation of an animation into a sequence of captured still images.

27. The system of claim 23, wherein the transition to the second power state includes a transformation of an animation into a single still image.

28. A power management system for a mobile device comprising:

a first power management subsystem, the first power management subsystem to reduce power consumed by a display screen of the mobile device by imposing changes in one or more illumination factors for the display screen; and

a second power management subsystem, the second power management subsystem to reduce power consumed by the display screen of the mobile device by imposing changes in one or more animation factors for the display screen.

29. The power management system of claim 28, wherein the changes in the one or more illumination factors for the display screen to be imposed by the first power management subsystem include one or more of:

reducing a level of illumination for the display screen;

transitioning a background or foreground illumination to a color that requires less power than a previous color;

turning off a background illumination for the display screen;

turning off one or more but less than all of a plurality of sectors of a background illumination for the display screen; and

turning off one or more but less than all of a plurality of sectors of the display screen.

30. The power management system of claim 28, wherein the changes in the one or more animation factors for the display screen to be imposed by the second power management subsystem include one or more of:

changing an animation to a color that requires less power than a previous color;

capturing a series of still frames of an animation, storing the series of still frames in a plurality of registers, and replacing the animation with a sequence of the still frames; and

capturing a single still frame of the animation and replacing the animation with the still frame.