Edge preservation for spatially varying power conservation

• US 7,602,388 B2
• Filed: 06/20/2005
• Issued: 10/13/2009
• Est. Priority Date: 07/16/2003
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Honeywood Technologies LLC
• Inventors: Plut, William J.
• Primary Examiner(s): Mengistu, Amare
• Assistant Examiner(s): LAM, VINH TANG
• Application Number:
  US11/157,112
• Publication Number:
  US 20060001658A1
• Time in Patent Office: 1,576 Days
• Field of Search: 345/52, 345/211, 315/169.1
• US Class Current: 345/211
• CPC Class Codes: G06F 1/3218 of display devices
• CPC Class Codes: G06F 1/3265 Power saving in display device
• CPC Class Codes: G09G 2310/04 Partial updating of the display screen
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/0646 Modulation of illumination source brightness and image signal correlated to each other
• CPC Class Codes: G09G 2320/0686 with two or more screen areas displaying information with different brightness or colours
• CPC Class Codes: G09G 2330/022 in absence of operation, e.g. no data being entered during a predetermined time
• CPC Class Codes: G09G 2360/16 Calculation or use of calculated indices related to luminance levels in display data
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

Described herein are systems and methods that reduce power consumption for an electronics device that includes a display. The systems and methods generate edge detection video information for a graphics component that allows a person to visually identify and locate the graphics component within a display area for the display device. Video information in the display area other than the edge detection video information is altered to conserve power. Preserving the edge detection video information for the window maintains a person'"'"'s ability to see and locate the window at a later time, even though other portions of the display area have been altered and potentially visually degraded to conserver power.

Claims

1. A method for reducing power consumed by an electronics device that includes a display device, the method comprising:

generating edge detection video information for a graphics component that allows a person to visually locate the graphics component in a display area for the display device, wherein the edge detection video information includes perimeter edge detection video information;

altering video information in the display area, wherein altering video information includes altering video information in an internal portion of the graphics component that is inside the perimeter edge detection video information and altering video information that is outside the perimeter edge detection video information, while visually preserving the edge detection video information relative to the video information in the internal portion of the graphics component and relative to the video information that is outside the perimeter edge detection video information, to produce altered video information, such that the display device will consume less power when displaying the altered video information than an amount of power that would be required to display the video information without the alteration; and

displaying the altered video information with the edge detection video information.

2. The method of claim 1 wherein preserving the edge detection video information includes not altering the edge detection video information.

3. The method of claim 1 wherein preserving the edge detection video information includes turning the edge detection video information to white.

4. The method of claim 2 wherein the graphics component outputs video information for one of:

a word processing program, an Internet Browser interface, a graphics control, a music player program, and a video game.

5. The method of claim 2 wherein edge detection video information includes a contour of pixel locations for the graphics component.

6. The method of claim 1 wherein the edge detection video information includes internal edge information that increases an amount of edge detection video information for the graphics component and distinguishes two similarly shaped graphics components.

7. The method of claim 1 wherein generating the edge detection video information uses logic to determine the edge detection video information.

8. The method of claim 1 wherein generating the edge detection video information uses an edge detection algorithm to determine the edge detection video information.

9. The method of claim 1 wherein the alteration comprises a luminance reduction for the video information in the display area other than the edge detection video information.

10. The method of claim 9 wherein the luminance reduction includes a histogram compression and a histogram shift for the video information in the display area other than the edge detection video information.

11. The method of claim 9 wherein the luminance reduction increases contrast between the altered video information and the edge detection video information.

12. The method of claim 9 displaying the altered video information with the edge detection video information includes superimposing the edge detection video information onto the altered video information.

13. The method of claim 1 wherein further comprising a second alteration of the video information in the display area other than the edge detection video information.

14. The method of claim 1 wherein the display device is an OLED device.

15. 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.

16. The method of claim 1 wherein the graphics component is one of:

a rectangular window, an icon, and a toggle.

17. A method for reducing power consumed by an electronics device that includes a display device, the method comprising:

generating edge detection video information for a graphics component in a display area for the display device that allows a person to visually locate the graphics component in the display area, wherein the edge detection video information includes perimeter edge detection video information;

monitoring user activity in the display area;

after a threshold inactivity time in the display area, wherein altering video information includes altering video information in an internal portion of the graphics component that is inside the perimeter edge detection video information and altering video information that is outside the perimeter edge detection video information, while visually preserving the edge detection video information relative to the video information in the internal portion of the graphics component and relative to the video information that is outside the perimeter edge detection video information, to produce altered video information, such that the display device will consume less power when displaying the altered video information than an amount of power that would be required to display the video information without the alteration; and

displaying the altered video information with the edge detection video information.

18. The method of claim 17 wherein the alteration comprises a luminance reduction for the video information other than the edge detection video information.

19. The method of claim 17 wherein further comprising a second alteration to the altered video information after inactivity in the display area for a power reduction interval that follows the threshold inactivity time.

20. A 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 generating edge detection video information for a graphics component that allows a person to visually locate the graphics component in a display area for the display device, wherein the edge detection video information includes perimeter edge detection video information;

instructions for altering video information in the display area, wherein altering video information includes altering video information in an internal portion of the graphics component that is inside the perimeter edge detection video information and altering video information that is outside the perimeter edge detection video information, while visually preserving the edge detection video information relative to the video information in the internal portion of the graphics component and relative to the video information that is outside the perimeter edge detection video information, to produce altered video information, such that the display device will consume less power when displaying the altered video information than an amount of power that would be required to display the video information without the alteration

instructions for displaying the altered video information with the edge detection video information.