Apparatus, system, and method for controlling an electronic display

• US 8,378,960 B2
• Filed: 08/13/2009
• Issued: 02/19/2013
• Est. Priority Date: 08/13/2009
• Status: Active Grant

• Current Assignee: Lenovo International Limited (Lenovo Group Ltd.)
• Original Assignee: International Business Machines Corporation
• Inventors: Kangas, Paul D., Noble, Robert T.
• Primary Examiner(s): PHAM, VIET DAVID
• Application Number:
  US12/541,016
• Publication Number:
  US 20110037781A1
• Time in Patent Office: 1,286 Days
• Field of Search: 345/102, 345/211
• US Class Current: 345/102
• CPC Class Codes: G09G 2320/043 Preventing or counteracting the effects of ageing
• 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 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336

Abstract

An apparatus, system, and method are disclosed for controlling an electronic display. An activity module receives a brightness restore signal and sets a brightness level of an electronic display to a default brightness level in response to the brightness restore signal. A brightness decay module dims the brightness level of the electronic display from the default brightness level to an intermediate brightness level at a first dimming rate. The intermediate brightness level is selected from one or more intermediate brightness levels. A plateau module maintains the brightness level of the electronic display at the intermediate brightness level for a predefined period of time. A minimum brightness module dims the brightness level of the electronic display from an intermediate brightness level to a minimum brightness level at a second dimming rate.

Claims

1. An apparatus to control an electronic display, the apparatus comprising:

an activity module that receives a brightness restore signal and sets a brightness level of an electronic display to a default brightness level in response to the brightness restore signal;

a brightness decay module that dims the brightness level of the electronic display from the default brightness level to an intermediate brightness level at a first dimming rate, the intermediate brightness level selected from one or more intermediate brightness levels, wherein the first dimming rate is such that a time that the brightness level decreases from the default brightness level to the intermediate brightness level is such that the user perceives the decrease in the brightness level as a gradual dim from the default brightness level to the intermediate brightness level, and wherein dimming the brightness level decreases power consumption of the electronic display;

a plateau module that maintains the brightness level of the electronic display at the intermediate brightness level for a predefined period of time, wherein the predefined period of time begins in response to dimming by the brightness decay module reaching the intermediate brightness level, and wherein the brightness level is maintained at the intermediate brightness level for the predefined period of time, the defined time period comprising a time period long enough such that the user perceives the brightness level to remain constant at the intermediate brightness level during the default time period; and

a minimum brightness module that dims the brightness level of the electronic display from the intermediate brightness level to a minimum brightness level at a second dimming rate, wherein the dimming at the second dimming rate begins in response to the end of the predefined period of time, wherein the second dimming rate is such that a time that the brightness level decreases from the intermediate brightness level to the minimum brightness level is such that the user perceives the decrease in the brightness level as a gradual dim from the intermediate brightness level to the minimum brightness level,

wherein the minimum brightness module maintains the electronic display at the minimum brightness level until one of the activity module receives a brightness restore signal and the electronic display is turned off.

2. The apparatus of claim 1, further comprising a configuration module that receives a custom definition of at least one of the intermediate brightness level, the default brightness level, the predefined period of time, the first dimming rate, the second dimming rate, and the minimum brightness level, the first dimming rate, the predefined period of time, and second dimming rate defined such that the user perceives the predefined period of time and a time that the electronic display dims from the default brightness level to the intermediate brightness level and from the intermediate brightness level to the minimum brightness level.

3. The apparatus of claim 2, wherein the configuration module receives the custom definition over a network from a display management server that manages display settings for a plurality of electronic displays.

4. The apparatus of claim 2, wherein the configuration module receives the custom definition over a Display Data Channel (“

DDC”

) Inter-Integrated Circuit (“

I2C”

) communications bus.

5. The apparatus of claim 1, wherein the predefined period of time begins running in response to the plateau module receiving a brightness release signal.

6. The apparatus of claim 1, further comprising a multiple plateau module that dims the brightness level of the electronic display from the intermediate brightness level to one or more additional intermediate brightness levels at a dimming rate and maintains the brightness level of the electronic display at each of the additional intermediate brightness levels for one or more predefined periods of time, the dimming rate and the predefined periods of time at the additional intermediate brightness levels defined such that the user perceives the predefined periods of time and a time that the electronic display dims between brightness levels.

7. The apparatus of claim 1, further comprising a brightness override mode module that temporarily sets the brightness level of the electronic display to a brightness level higher than a maximum normal use brightness level.

8. The apparatus of claim 1, wherein the brightness decay module begins dimming the brightness level of the electronic display from the default brightness level to the intermediate brightness level substantially immediately in response to the activity module setting the brightness level of the electronic display to the default brightness level.

9. The apparatus of claim 8, wherein the brightness decay module begins dimming the brightness level of the electronic display within about ten seconds of the activity module setting the brightness level of the electronic display to the default brightness level.

10. The apparatus of claim 1, wherein the activity module receives the brightness restore signal from a user input device.

11. The apparatus of claim 1, wherein dimming the brightness level of the electronic display comprises dimming the brightness level of the electronic display in discrete increments that are imperceptible to a user.

12. The apparatus of claim 1, wherein the first dimming rate and the second dimming rate comprise nonlinear dimming rates.

13. The apparatus of claim 12, wherein a slope of the first dimming rate increases as the brightness level of the electronic display approaches the intermediate brightness level and wherein a slope of the second dimming rate decreases as the brightness level of the electronic display approaches the minimum brightness level.

14. The apparatus of claim 1, wherein the intermediate brightness level comprises a visible brightness level, wherein a displayed image is distinguishable to a user at the visible brightness level, and further wherein the electronic display is off at the minimum brightness level.

15. An apparatus to control an electronic display, the apparatus comprising:

a configuration module that receives a custom definition of at least one of a default brightness level, an intermediate brightness level, a predefined period of time, a first dimming rate, a second dimming rate, and a minimum brightness level over a network from a display management server over a Display Data Channel (“

DDC”

) Inter-Integrated Circuit (“

I2C”

) communications bus, the display management server managing display settings for a plurality of electronic displays;

an activity module that receives a brightness restore signal from a user input device and sets a brightness level of an electronic display to the default brightness level in response to the brightness restore signal;

a brightness decay module that dims the brightness level of the electronic display from the default brightness level to the intermediate brightness level at the first dimming rate, the intermediate brightness level selected from one or more intermediate brightness levels, wherein the first dimming rate is such that a time that the brightness level decreases from the default brightness level to the intermediate brightness level is such that the user perceives the decrease in the brightness level as a gradual dim from the default brightness level to the intermediate brightness level, and wherein dimming the brightness level decreases power consumption of the electronic display;

a plateau module that maintains the brightness level of the electronic display at the intermediate brightness level for the predefined period of time, the predefined period of time beginning to run in response to the plateau module receiving a brightness release signal, and wherein the brightness level is maintained at the intermediate brightness level for the predefined period of time, the defined time period comprising a time period long enough such that the user perceives the brightness level to remain constant at the intermediate brightness level during the default time period; and

a minimum brightness module that dims the brightness level of the electronic display from the intermediate brightness level to the minimum brightness level at the second dimming rate, wherein the dimming at the second dimming rate begins in response to the end of the predefined period of time, wherein the second dimming rate is such that a time that the brightness level decreases from the intermediate brightness level to the minimum brightness level is such that the user perceives the decrease in the brightness level as a gradual dim from the intermediate brightness level to the minimum brightness level,

wherein the minimum brightness module maintains the electronic display at the minimum brightness level until one of the activity module receives a brightness restore signal and the electronic display is turned off.

16. A system to control an electronic display, the system comprising:

an electronic display having a brightness level that is adjustable;

a display controller that sets the brightness level of the electronic display, the display controller comprising,

an activity module that receives a brightness restore signal and sets the brightness level of the electronic display to a default brightness level in response to the brightness restore signal;

a brightness decay module that dims the brightness level of the electronic display from the default brightness level to an intermediate brightness level at a first dimming rate, the intermediate brightness level selected from one or more intermediate brightness levels, wherein the first dimming rate is such that a time that the brightness level decreases from the default brightness level to the intermediate brightness level is such that the user perceives the decrease in the brightness level as a gradual dim from the default brightness level to the intermediate brightness level, and wherein dimming the brightness level decreases power consumption of the electronic display;

a plateau module that maintains the brightness level of the electronic display at the intermediate brightness level for a predefined period of time, wherein the predefined period of time begins in response to the dimming decay module dimming the brightness level to the intermediate brightness level, and wherein the brightness level is maintained at the intermediate brightness level for the predefined period of time, the defined time period comprising a time period long enough such that the user perceives the brightness level to remain constant at the intermediate brightness level during the default time period; and

a minimum brightness module that dims the brightness level of the electronic display from the intermediate brightness level to a minimum brightness level at a second dimming rate, wherein the dimming at the second dimming rate begins in response to the end of the predefined period of time, wherein the second dimming rate is such that a time that the brightness level decreases from the intermediate brightness level to the minimum brightness level is such that the user perceives the decrease in the brightness level as a gradual dim from the intermediate brightness level to the minimum brightness level,

wherein the minimum brightness module maintains the electronic display at the minimum brightness level until one of the activity module receives a brightness restore signal and the electronic display is turned off.

17. The system of claim 16, further comprising a display management server that manages display settings for the electronic display and for a plurality of additional electronic displays and defines at least one of the intermediate brightness level, the default brightness level, the predefined period of time, the first dimming rate, the second dimming rate, and the minimum brightness level over a network.

18. A method for controlling an electronic display, the method comprising:

receiving a brightness restore signal;

setting a brightness level of an electronic display to a default brightness level in response to the brightness restore signal;

dimming the brightness level of the electronic display from the default brightness level to an intermediate brightness level at a first dimming rate, the intermediate brightness level selected from one or more intermediate brightness levels, wherein the predefined period of time begins in response to the brightness level reaching the intermediate brightness level, wherein the first dimming rate is such that a time that the brightness level decreases from the default brightness level to the intermediate brightness level is such that the user perceives the decrease in the brightness level as a gradual dim from the default brightness level to the intermediate brightness level, and wherein dimming the brightness level decreases power consumption of the electronic display;

maintaining the brightness level of the electronic display at the intermediate brightness level for a predefined period of time, the defined time period comprising a time period long enough such that the user perceives the brightness level to remain constant at the intermediate brightness level during the default time period;

dimming the brightness level of the electronic display from an intermediate brightness level to a minimum brightness level at a second dimming rate, wherein the dimming at the second dimming rate begins in response to the end of the predefined period of time, wherein the second dimming rate is such that a time that the brightness level decreases from the intermediate brightness level to the minimum brightness level is such that the user perceives the decrease in the brightness level as a gradual dim from the intermediate brightness level to the minimum brightness level,

wherein maintaining the electronic display at the minimum brightness level until one of receiving a brightness restore signal and turning of the electronic display.

19. The method of claim 18, further comprising dimming the brightness level of the electronic display from the intermediate brightness level to a second intermediate brightness level and maintaining the brightness level of the electronic display at the second intermediate brightness level for a second predefined period of time.