Computer system including display control system

• US 5,936,608 A
• Filed: 08/30/1996
• Issued: 08/10/1999
• Est. Priority Date: 08/30/1996
• Status: Expired due to Term

• Current Assignee: Dell USA LP (Dell Technologies Inc.)
• Original Assignee: Dell USA LP (Dell Technologies Inc.)
• Inventors: Springer, David
• Primary Examiner(s): Powell, Mark R.
• Assistant Examiner(s): Kovalick, Vincent E.
• Application Number:
  US08/706,101
• Time in Patent Office: 1,075 Days
• Field of Search: 345/74, 345/75, 345/147, 345/211, 345/212, 345/213, 345/145, 345/343, 345/348, 315/169.3, 395/750.01, 395/750.03, 395/750.06, 395/750.07, 395/750.08
• US Class Current: 345/690
• 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: G09G 2320/0606 Manual adjustment
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 3/22 using controlled light sources
• CPC Class Codes: G09G 5/06 using colour palettes, e.g. look-up tables
• CPC Class Codes: G09G 5/14 Display of multiple viewports
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A computer system and methodology for controlling the brightness of visual objects displayed on an electron beam flat panel display monitor used in a computer system having a multitasking operating system and a graphics controller coupled to the display monitor. The display control system includes an operating rules module, an activity monitoring module, and a palette manager module. The operating rules module identifies one or more predetermined conditions of operating system events; which require a variation in the brightness of selected visual objects pertaining to the predetermined conditions. The activity monitoring module monitors and filters the operating system events for the predetermined conditions and transmits instructions to a palette manager module to vary the brightness of the selected visual objects when a predetermined condition has been met. The palette manager module varies the brightness of the selected visual objects using the graphics controller.

Claims

1. A computer system comprising:

a processor;

a memory coupled to the processor;

a multitasking operating system stored in the memory, the multitasking operating system tracking operating system events;

a graphics controller coupled to the processor;

a display for which power consumption can be controlled pixel by pixel, the display coupled to said graphics controller, the display monitor displaying visual objects;

an operating rules module for identifying one or more predetermined conditions of operating system events which require a variation in the brightness of a visual object selected from among a plurality of visual objects based on said predetermined conditions;

an activity monitoring module for monitoring and filtering operating system events for said predetermined conditions and for transmitting instructions to vary the brightness of the selected visual objects; and

a palette manager module for receiving instructions from the activity monitoring module and for managing the variation of brightness of the selected visual objects using the graphics controller.

2. The computer system of claim 1 wherein the palette manager module manages multiple sets of system colors including at least one set each of normal system colors and reduced brightness system colors, and transmits messages to the selected visual objects to use either normal system colors or reduced brightness system colors, and accomplishes the system colors variation of the selected visual objects by varying, in increments, the brightness of individual pixels on the display monitor.

3. The computer system of claim 2 wherein the graphics controller has a video palette digital to analog converter (DAC) and the palette manager module manages the sets of system colors through the video palette DAC.

4. The computer system of claim 1 wherein the predetermined conditions are automatically modified using heuristic algorithms.

5. The computer system of claim 1 wherein the predetermined conditions are modified by a computer system user.

6. The computer system of claim 1 wherein the operating rules module further identifies a length of time said predetermined condition must exist before varying the selected visual objects on the display monitor.

7. The computer system of claim 1 wherein the operating rules module further identifies a magnitude of variation in the brightness of the selected visual objects on the display monitor for each predetermined condition.

8. The computer system of claim 1 wherein said predetermined conditions include a change in a computer system user'"'"'s focus from one visual object to another visual object on the display monitor and wherein the palette manager module reduces the brightness of those selected visual objects not in the computer system user'"'"'s focus using the graphics controller, whereby the power consumed by the display monitor is reduced.

9. The computer system of claim 1 wherein the multitasking operating system is a windows based multitasking operating system and wherein the selected visual objects are window types.

10. The computer system of claim 9 wherein said predetermined conditions include a change in the computer system user'"'"'s focus from one window type to another window type and wherein the palette manager module reduces the brightness of those windows not in the computer system user'"'"'s focus using the graphics controller, whereby the power consumed by the display monitor is reduced.

11. A method for controlling brightness of visual objects displayed on a display for which power consumption can be controlled pixel by pixel the display monitor used in a system having at multitasking operating system and a graphics controller coupled to the display monitor, the method comprising the steps of:

identifying one or more predetermined conditions of operating system events which require a variation in the brightness of a visual object selected from among a plurality of visual objects based on said predetermined conditions;

monitoring the operating system events;

filtering the operating system events for the predetermined conditions; and

varying the brightness of the selected visual objects using the graphics controller.

12. The method of claim 11 wherein the varying, step comprises:

managing multiple sets of system colors including at least one set each of normal system colors and reduced brightness system colors;

transmitting messages to the selected visual objects to use either normal system colors or reduced brightness system colors; and

accomplishing the system color variation of the selected visual objects by varying, incrementally, the brightness of individual pixels on the, display monitor.

13. The method of claim 12 further comprising varying the brightness of groups of pixels on the display monitor wherein either normal system colors or reduced brightness system colors are displayed.

14. The method of claim 11 further comprising the step of automatically modifying the predetermined conditions using heuristic algorithms.

15. The method of claim 11 further comprising the step of modifying the predetermined conditions by a computer system user.

16. The method of claim 11 wherein the step of identifying one or more predetermined conditions is further defined by determining a length of time said predetermined condition must exist before varying the selected visual objects on the display monitor.

17. The method of claim 11 wherein the step of identifying one, or more predetermined conditions is further defined by determining a magnitude of variation in the brightness of visual objects on the display monitor for each predetermined condition.

18. The method of claim 11 wherein said predetermined conditions include a change in a computer system user'"'"'s focus from one visual object to another visual object and wherein the palette manager module reduces the brightness of those selected visual objects not in the computer system user'"'"'s focus, whereby the power consumed by the display monitor is reduced.

19. The method of claim 11 wherein the multitasking operating system is a windows based multitasking operating system and wherein the selected visual objects are window types.

20. The method of claim 19 wherein said predetermined conditions include a change in the computer system user'"'"'s focus from one window type to another window type and wherein the palette manager module reduces the brightness of those windows not in the computer system user'"'"'s focus using the graphics controller, whereby the power consumed by the display monitor is reduced.

21. An apparatus comprising:

a non-volatile memory;

an operating rules means, stored in non-volatile memory, for identifying one or more predetermined conditions of operating system events which require a variation in the brightness of a visual object selected from among a plurality of visual objects based on said predetermined conditions;

an activity monitoring means, stored in non-volatile memory, for monitoring and filtering the operating system events for the predetermined conditions; and

a palette manager means, stored in non-volatile memory, for varying the brightness of the selected visual objects using the graphics controller.

22. The apparatus of claim 21 wherein said palette manager means includes:

means for managing multiple sets of system colors including at least one set each of normal system colors and reduced brightness system colors;

means for transmitting messages to the selected visual objects to use either normal system colors or reduced brightness system colors; and

means for accomplishing the system color variation of the selected visual objects by varying, incrementally, the brightness of individual pixels on a display for which power consumption can be controlled pixel by pixel.

23. The apparatus of claim 22 further including a means for varying the brightness of groups of pixels on the display monitor wherein either normal system colors or reduced brightness system colors are displayed.

24. The apparatus of claim 21 further including a means for automatically modifying the predetermined conditions using heuristic algorithms.

25. The apparatus of claim 21 further including a means for modifying the predetermined conditions by a computer system user.

26. The apparatus of claim 21 wherein the operating rules means further includes determining a length of time said predetermined condition must exist before varying the selected visual objects on the display monitor.

27. The apparatus of claim 21 wherein the operating rules means further includes determining a magnitude of variation in the brightness of visual objects on the display monitor for each predetermined condition.

28. The apparatus of claim 21 wherein said predetermined conditions include a change in a computer system user'"'"'s focus from one visual object to another visual object and wherein said palette manager means further includes reducing the brightness of those selected visual objects not in the computer system user'"'"'s focus, whereby the power consumed by the display monitor is reduced.

29. The apparatus of claim 21 wherein the multitasking operating system is a windows based multitasking operating system and wherein the selected visual objects are window types.

30. The apparatus of claim 29 wherein said predetermined conditions include a change in the computer system user'"'"'s focus from one window type to another window type and wherein said palette manager means further includes reducing the brightness of those windows not in the computer system user'"'"'s focus using the graphics controller, whereby the power consumed by the display monitor is reduced.