Optimized screen brightness control using multi-point light intensity input

Patent metadata

Field	Value
Publication number	US-9875722-B2
Application number	US-201514819133-A
Country	US
Kind code	B2
Filing date	Aug 5, 2015
Priority date	Aug 5, 2015
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A method for controlling a display screen brightness level for an electronic device. In one embodiment, the electronic device determines a first ambient light level and associates the first ambient light level with a first priority weight value. The electronic device further determines a second ambient light level and associates the second ambient light level with a second priority weight value. A display controller within the electronic device sets the display screen brightness level based, at least in part, on the first ambient light level, the second ambient light level, and at least one of the first and second priority weight values.

First claim

What is claimed is:

1. A method for controlling a display screen brightness level for an electronic device, said method comprising:
determining a first ambient light level at a first light sensor of the electronic device
determining a second ambient light level at a second light sensor of a user wearable device that is different from the electronic device; and
setting the display screen brightness level of the electronic device based, at least in part, on the first ambient light level and the second ambient light level.

2. The method of claim 1 , wherein said setting the display screen brightness level comprises:
determining a normalization baseline for at least one of the first and second ambient light levels; and
normalizing at least one of the first and second ambient light levels based on the normalization baseline.

3. The method of claim 1 , wherein the first ambient light level is associated with a first priority weight value, wherein the second ambient light level is associated with a second priority weight value, wherein the display screen brightness level is further based, at least in part, on the first and second priority weight values, and wherein said setting the display screen brightness level comprises:
comparing the first and second ambient light levels; and
in response to determining that the second ambient light level exceeds the first ambient light level by a threshold amount, adjusting the second priority weight value.

4. The method of claim 3 , wherein said adjusting the second priority weight value comprises increasing the second priority weight value in proportion to a difference between the first and second ambient light levels.

5. The method of claim 1 , wherein the first light sensor is integrated with the electronic device, and wherein said determining the first ambient light level comprises detecting, by the first light sensor, the first ambient light level.

6. The method of claim 1 , wherein the electronic device is communicatively coupled with the user wearable device, and wherein said determining the second ambient light level comprises receiving from the user wearable device, the second ambient light level detected by the second light sensor.

7. The method of claim 1 , wherein the first ambient light level is associated with a first priority weight value, wherein the second ambient light level is associated with a second priority weight value, wherein the display screen brightness level is further based, at least in part, on the first and second priority weight values, and wherein said setting the display screen brightness level comprises:
generating an aggregate ambient light level value based on the first and second ambient light levels and the first and second priority weight values; and
sending the aggregate ambient light level value to a display feedback controller within the electronic device.

8. A computer program product for controlling a display screen brightness level of an electronic device, said computer program product comprising:
a computer readable storage medium having program instructions embodied therewith, the program instructions comprising program instructions to,
determine a first ambient light level at a first light sensor of the electronic device;
determine a second ambient light level at a second light sensor of a user wearable device that is different from the electronic device; and
set the display screen brightness level of the electronic device based, at least in part, on the first ambient light level and the second ambient light level.

9. The computer program product of claim 8 , wherein said program instructions to set the display screen brightness level comprise program instructions to:
determine a normalization baseline for at least one of the first and second ambient light levels; and
normalize at least one of the first and second ambient light levels based on the normalization baseline.

10. The computer program product of claim 8 , wherein the first ambient light level is associated with a first priority weight value, wherein the second ambient light level is associated with a second priority weight value, wherein the display screen brightness level is further based, at least in part, on the first and second priority weight values, and wherein said program instructions to set the display screen brightness level comprise program instructions to:
compare the first and second ambient light levels; and
in response to determining that the second ambient light level exceeds the first ambient light level by a threshold amount, adjust the second priority weight value.

11. The computer program product of claim 10 , wherein said program instructions to adjust the second priority weight value comprise program instructions to increase the second priority weight value in proportion to a difference between the first and second ambient light levels.

12. The computer program product of claim 8 , wherein the electronic device is communicatively coupled the user wearable device, and wherein said program instructions to determine the second ambient light level comprises program instructions to receive, from the user wearable device, the second ambient light level detected by the second light sensor.

13. The computer program product of claim 8 , wherein the first ambient light level is associated with a first priority weight value, wherein the second ambient light level is associated with a second priority weight value, wherein the display screen brightness level is further based, at least in part, on the first and second priority weight values, and wherein said program instructions to set the display screen brightness level comprise program instructions to:
generate an aggregate ambient light level value based on the first and second ambient light levels and the first and second priority weight values; and
send the aggregate ambient light level value to a display feedback controller within the electronic device.

14. A system to control a display screen brightness level for an electronic device comprising:
a processor; and
a computer readable storage medium having program instructions embodied therewith, the program instructions executable by the processor to cause the display screen brightness level control system to,
determine a first ambient light level at a first light sensor of the electronic device;
determine a second ambient light level at a second light sensor of a user wearable device that is different from the electronic device; and
set the display screen brightness level of the electronic device based, at least in part, on the first ambient light level and the second ambient light level.

15. The system of claim 14 , wherein said setting the display screen brightness level comprises:
determining a normalization baseline for at least one of the first and second ambient light levels; and
normalizing at least one of the first and second ambient light levels based on the normalization baseline.

16. The system of claim 14 , wherein the first ambient light level is associated with a first priority weight value, wherein the second ambient light level is associated with a second priority weight value, wherein the display screen brightness level is further based, at least in part, on the first and second priority weight values, and wherein said setting the display screen brightness level comprises:
comparing the first and second ambient light levels; and
in response to determining that the second ambient light level exceeds the first ambient light level by a threshold amount, adjusting the second priority weight valu

Assignees

• IBM

Inventors

• Ghosh Rahul
• Lariccia William R
• Muthukrishnan Ravi K
• Quirk Aaron J
• Zhu Xianjun

Classifications

• G09G2320/0626

  for control of overall brightness · CPC title

• G09G5/003 Primary

  Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto (specific for a CRT G09G1/165; for a flat panel G09G3/2092) · CPC title

• G09G2360/144

  the light being ambient light · CPC title