System and method for contextually managing digital display blue light intensity

• US 10,600,385 B2
• Filed: 11/11/2016
• Issued: 03/24/2020
• Est. Priority Date: 11/11/2016
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Peana, Stefan, Aurongzeb, Deeder M.
• Primary Examiner(s): Tswei, YuJang
• Application Number:
  US15/349,945
• Publication Number:
  US 20180137837A1
• Time in Patent Office: 1,229 Days
• Field of Search: None
• CPC Class Codes: G06F 3/147 using display panels
• CPC Class Codes: G06T 1/20 Processor architectures; Processor configuration, e.g. pipelining
• CPC Class Codes: G09G 2320/0633 by amplitude modulation of the brightness of the illumination source
• CPC Class Codes: G09G 2320/064 by time modulation of the brightness of the illumination source
• 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 2360/144 the light being ambient light
• CPC Class Codes: G09G 2360/16 Calculation or use of calculated indices related to luminance levels in display data
• CPC Class Codes: G09G 2380/08 Biomedical applications
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• CPC Class Codes: G09G 5/10 Intensity circuits
• CPC Class Codes: H05B 47/00 Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant

Abstract

A method of or an information handling system operating a contextual blue light management system comprising a digital display having a plurality of blue light emitters emitting light at a default luminous intensity to display a white point correlated color temperature and a memory for storing one or more internal data records correlating a blue light luminous intensity value with a preset adjusted display white point correlated color temperature, a defined condition under which to display the preset adjusted display white point correlated color temperature, and a preset duration of time for gradual shift of luminous intensity and operating the contextual blue light management system via a processor to receive and store in the one or more internal data records the preset adjusted display white point correlated color temperature, the defined condition under which to display the preset adjusted display white point correlated color temperature, and the preset duration of time, wherein the processor determines the defined condition has occurred and the graphics processing unit executes a gradual shift of luminous intensity of the plurality of the blue light emitters from the default luminous intensity to the blue light luminous intensity value of the preset adjusted display white point correlated color temperature correlated with the defined condition in the one or more internal data records over the preset duration of time.

Claims

1. An information handling system operating a contextual blue light management system comprising:

a digital display having a plurality of pixels with

each pixel having a red light emitter emitting light at a first red light intensity, a green light emitter emitting light at a first green light intensity, and a blue light emitter at a first blue light intensity

to display a default white point correlated color temperature;

a processor operatively connected to the digital display and memory for

operating at least a portion of a contextual blue light management system to receive sensor data indicating a defined condition to select a shift amount to a preset adjusted display white point correlated color temperature over a preset duration of time by a gradual shift of luminous intensity of the first blue light intensity to a second blue light intensity corresponding to the detected defined condition;

the information handling system executing an application program generating graphics output to the digital display; and

the processor executing the contextual blue light management system for determining whether the application program generating graphics output is at or below a graphics output intensity level threshold and

executing the gradual shift of luminous intensity of the blue light emitter from the first blue light intensity to the second blue light intensity when below the graphics output intensity level threshold and inhibiting the gradual shift of luminous intensity of the blue light emitter when the graphics output intensity level threshold is exceeded;

the red light emitter continuing to emit light at the first red light intensity; and

the green light emitter continuing to emit light at the first green light intensity.

2. The information handling system operating the contextual blue light management system of claim 1 wherein the gradual shift of luminous intensity of the plurality of the blue light emitters from the first blue light intensity to the second blue light intensity corresponding to the defined detected condition in the one or more internal data records follows one of a linear progression, a curvilinear progression, or a step progression over the preset duration of time.

3. The information handling system operating the contextual blue light management system of claim 2, further comprising:

a nearby external light source having an adaptive color gamut connected to the processor via a network;

a network interface device, operatively connected to the processor and the nearby external light source, communicating machine readable executable code instruction to instruct a corresponding shift to the nearby external light source to emit light having an external light source white point coordinated color temperature equivalent to the preset adjusted display white point coordinated color temperature.

4. The information handling system operating the contextual blue light management system of claim 1, wherein the defined detected condition is the processor receiving a threshold difference percentage measurement of a coordinated color temperature of an ambient light source, further comprising:

an ambient light detector operatively connected to the processor for conducting one or more measurements of the coordinated color temperature of the ambient light; and

the processor receiving the one or more measurements of the coordinated color temperature of the ambient light source, and determining an average of the measured coordinated color temperature of the ambient light source differs from the white point correlated color temperature of the digital display by at least threshold difference percentage of the value of the white point correlated color temperature of the digital display.

5. The information handling system operating the contextual blue light management system of claim 1, wherein the defined detected condition is the processor receiving a threshold difference percentage measurement of a coordinated color temperature for a nearby external light source, further comprising:

the nearby external light source having an adaptive color gamut operatively connected to the processor via one or more networks; and

the processor receiving the one or more measurements of the coordinated color temperature of the nearby external light source, and determining the measured coordinated color temperature of the nearby external light source differs from the white point correlated color temperature of the digital display by at least the threshold difference percentage of the value of the white point correlated color temperature of the digital display.

6. The information handling system operating the contextual blue light management system of claim 1, wherein the defined detected condition is identification of an indication of user fatigue, further comprising:

a digital camera operatively connected to the processor for capturing one or more digital images of a user;

the memory operatively connected to the digital camera for storing the one or more digital images of the user captured via the digital camera; and

the processor analyzing the one or more captured digital images of the user to identify one or more indications of user fatigue.

7. The information handling system operating the contextual blue light management system of claim 1, further comprising:

the processor identifying that the application program generating graphics output to the digital display has begun execution to exceed the graphics output intensity level threshold; and

the processor impeding the gradual shift of luminous intensity of the plurality of the blue light emitters from the first blue light intensity to the second blue light intensity.

8. A method for contextually managing digital display blue light intensity comprising:

emitting light from a digital display having a plurality of pixels each comprising a red light emitter emitting light at a first red light intensity, a green light emitter emitting light at a first green light intensity, and a blue light emitter emitting light at a first green light intensity generating a default white point correlated color temperature;

receiving and correlating a preset adjusted display white point correlated color temperature, a defined condition under which to display the preset adjusted display white point correlated color temperature, and a preset duration of time;

determining, via a processor executing a contextual blue light management system, to receive sensor data indicating that a defined detected condition has occurred and selecting a preset adjusted display white point correlated color temperature shift level and a preset duration of time for a gradual shift based on the defined detected condition;

determining whether an application program is executing to generate graphics output at or below a graphics output intensity level threshold;

executing, via the processor, a machine readable executable code instruction to perform the gradual shift of luminous intensity of the blue light emitter of each of the plurality of pixels from the first blue light intensity to the second blue light intensity when below the graphics output intensity level threshold to generate the preset adjusted display white point correlated color temperature correlated with the defined detected condition over the preset duration of time and inhibiting the gradual shift of luminous intensity of the blue light emitter when the graphics output intensity level threshold is exceeded; and

simultaneously maintaining emission of light via the red light emitter and green light emitter of each of the plurality of pixels at the first red light intensity and the first green light intensity.

9. The method for contextually managing digital display blue light intensity of claim 8 wherein the gradual shift of luminous intensity of the plurality of the blue light emitters from the first blue light intensity to the second blue light intensity correlated with the defined detected condition follows one of a linear progression or a curvilinear progression over the preset duration of time.

10. The method for contextually managing digital display blue light intensity of claim 8 wherein the gradual shift of luminous intensity of the plurality of the blue light emitters from the first blue light intensity to the second blue light intensity correlated with the defined detected condition follows a step progression at a plurality of intervals over the preset duration of time.

11. The method for contextually managing digital display blue light intensity of claim 8, further comprising:

identifying that the application program to generate graphics output to exceed the graphics output intensity level threshold has commenced operating; and

impeding the gradual shift of luminous intensity of the plurality of the blue light emitters from the the first blue light intensity to the second blue light intensity correlated with the defined detected condition.

12. The method for contextually managing digital display blue light intensity of claim 8, wherein the defined detected condition is receiving a threshold difference percentage measurement of a coordinated color temperature of an ambient light source, further comprising receiving one or more measurements of the coordinated color temperature of the ambient light source, and determining an average measured coordinated color temperature of the ambient light source differs from the default white point correlated color temperature of the digital display by at least the threshold difference percentage of the value of the white point correlated color temperature of the digital display.

13. The method for contextually managing digital display blue light intensity of claim 12, further comprising communicating machine readable executable code instruction to instruct the nearby external light source to emit light having an external light source white point coordinated color temperature equivalent to the preset adjusted display white point coordinated color temperature.

14. The method for contextually managing digital display blue light intensity of claim 8 further comprising:

determining that a second defined detected condition has occurred; and

performing a second gradual shift of luminous intensity of the plurality of blue light emitters to a third blue light intensity correlated with the second defined detected condition over a second preset duration of time.

15. An information handling system operating a contextual blue light management system comprising:

a digital display having a plurality of blue light emitters, emitting light at a default luminous intensity to display a default white point correlated color temperature;

the digital display having a first display pixel region displaying an output of a first application program having a first graphics intensity level and a second display pixel region displaying an output of a second application program having a second graphics intensity level;

a graphics processing unit operatively connected to the digital display operating to adjust luminous intensity of a first subset of the plurality of blue light emitters for the first display pixel region, and luminous intensity of a second subset of the plurality of the blue light emitters for the second display pixel region;

the graphics processing unit operating the contextual blue light management system to receive and correlate a first preset adjusted display white point correlated color temperature, a first defined condition under which to display the first preset adjusted display white point correlated color temperature, and a first preset duration of time;

the graphics processing unit determining the first defined condition has occurred, the first application program and second application program are currently operating, the first graphics intensity level is below a preset graphics intensity level, and the second graphics intensity level is above the preset graphics intensity level;

the graphics processing unit performing a first gradual shift of luminous intensity of the first subset of the plurality of blue light emitters associated with the first display pixel region displaying the output of the first application program having the first graphics intensity level from the default luminous intensity to the blue light luminous intensity value correlated with the first defined condition over the first preset duration of time; and

the graphics processing unit maintaining the default luminous intensity of the second subset of the plurality of the blue light emitters associated with the second display pixel region displaying the output of the second application program having the second graphics intensity level.

16. The information handling system operating the contextual blue light management system of claim 15 wherein the first gradual shift of the first subset of the plurality of blue light emitters associated with the first display pixel region displaying the output of the first application program having the first graphics intensity level from the default luminous intensity to the blue light luminous intensity value correlated with the first defined condition follows one of a linear progression, a curvilinear progression, or a step progression over the first preset duration of time.

17. The information handling system operating the contextual blue light management system of claim 16 further comprising:

the graphics processing unit operating the contextual blue light management system to receive and correlate a second preset adjusted display white point correlated color temperature, a second defined condition under which to display the second preset adjusted display white point correlated color temperature, and a second preset duration of time;

the graphics processing unit determining the second defined condition has occurred; and

the graphics processing unit performing a second gradual shift of luminous intensity of the first subset of the plurality of blue light emitters associated with the first display pixel region displaying the output of the first application program having the first graphics intensity level from the blue light luminous intensity value correlated with the first defined condition to the blue light luminous intensity value correlated with the second defined condition over the second preset duration of time.

18. The information handling system operating the contextual blue light management system of claim 16, wherein the first defined condition is the processor receiving a threshold difference percentage measurement of a coordinated color temperature of an ambient light source, further comprising:

an ambient light detector operatively connected to the processor for conducting one or more measurements of the coordinated color temperature of the ambient light source; and

the graphics processing unit receiving the one or more measurements of the coordinated color temperature of the ambient light source, and determining the average measured coordinated color temperature of the ambient light source differs from the default white point correlated color temperature of the digital display by at least the threshold difference percentage of the value of the default white point correlated color temperature of the digital display.

19. The information handling system operating the contextual blue light management system of claim 16, wherein the first gradual shift of luminous intensity of the plurality of the blue light emitters from the default luminous intensity to the blue light luminous intensity value correlated with the defined condition follows a step progression at a plurality of intervals over the preset duration of time.

20. The information handling system operating the contextual blue light management system of claim 16 further comprising:

the graphics processing unit the contextual blue light management system to receive and correlate a second preset adjusted display white point correlated color temperature, a second defined condition under which to display the second preset adjusted display white point correlated color temperature, and a second preset duration of time;

the graphics processing unit determining the second defined condition has occurred; and

the graphics processing unit performing a second gradual shift of luminous intensity of the second subset of the plurality of blue light emitters associated with the second display pixel region displaying the output of the second application program having the second graphics intensity level from the blue light luminous intensity value correlated with the second defined condition to the blue light luminous intensity value correlated with the second defined condition over the second preset duration of time.