Electronic device with gesture detection system and methods for using the gesture detection system

1. A method in an electronic device, the method comprising:

causing light to be projected from a plurality of light sources;

detecting, using a sensor, light originating from at least two light sources of the plurality of light sources that is reflected from an eye of a user of the electronic device;

generating at least one signal based on the detected light, wherein the at least one signal comprises at least one signal indicating an angle at which the detected light is detected;

determining movement of the eye based on the at least one signal; and

carrying out a function on the electronic device based on the at least one signal.

2. The method of claim 1 , wherein the carrying out a function on the electronic device comprises carrying out a function on the electronic device based on relative strength of the detected light originating from the at least two light sources.

3. The method of claim 2 , further comprising reselecting at least one light source of the plurality of light sources if the detected light originating from at least one of the at least two light sources becomes weaker than detected light originating from the at least one light source.

4. The method of claim 2 , further comprising:

determining, based on the relative strength of the detected light, a difference between detected light originating from at least one light source of the at least two light sources having a stronger detected light and detected light originating from at least one light source of the at least two light sources having a weaker detected light; and

causing an increased amount of light to be projected from the at least one light source from which the weaker detected light originated based on the determined difference.

5. The method of claim 1 , wherein the at least one signal comprises at least one signal indicating a strength of the detected light.

6. The method of claim 1 , wherein the at least one signal comprises at least one signal indicating a direction from which the detected light is detected.

7. The method of claim 6 , further comprising reselecting at least one light source of the plurality of light sources based on the at least one signal indicating the direction from which the detected light is detected.

8. The method of claim 1 , wherein the plurality of light sources is disposed proximate to the perimeter of the electronic device.

9. The method of claim 1 , wherein the sensor is a front facing camera of the electronic device.

10. An electronic device comprising:

a plurality of light sources;

a sensor for detecting light originating from one or more of the plurality of light sources; and

a hardware processor that is configured to:

cause light to be projected from a plurality of light sources;

detect, using the sensor, light originating from at least two light sources of the plurality of light sources that is reflected from an eye of a user of the electronic device;

generate at least one signal based on the detected light, wherein the at least one signal comprises at least one signal indicating an angle at which the detected light is detected;

determine movement of the eye based on the at least one signal; and

carry out a function on the electronic device based on the at least one signal.

11. The device of claim 10 , wherein the hardware processor is further configured to: carry out a function on the electronic device based on relative strength of the detected light originating from the at least two light sources.

12. The device of claim 11 , wherein the hardware processor is further configured to reselect at least one light source of the plurality of light sources if the detected light originating from at least one of the at least two light sources becomes weaker than detected light originating from the at least one light source.

13. The device of claim 11 , wherein the hardware processor is further configured to:

determine, based on the relative strength of the detected light, a difference between detected light originating from at least one light source of the at least two light sources having a stronger detected light and detected light originating from at least one light source of the at least two light sources having a weaker detected light; and

cause an increased amount of light to be projected from the at least one light source from which the weaker detected light originated based on the determined difference.

14. The device of claim 10 , wherein the at least one signal comprises at least one signal indicating a strength of the detected light.

15. The device of claim 10 , wherein the at least one signal comprises at least one signal indicating a direction from which the detected light is detected.

16. The device of claim 15 , wherein the hardware processor is further configured to reselecting at least one light source of the plurality of light sources based on the at least one signal indicating the direction from which the detected light is detected.

17. The device of claim 10 , wherein the plurality of light sources is disposed proximate to the perimeter of the electronic device.

18. The device of claim 10 , wherein the sensor is a front facing camera of the electronic device.

19. A non-transitory computer-readable medium containing computer executable instructions that, when executed by a processor, cause the processor to perform a method in an electronic device, the method comprising:

causing light to be projected from a plurality of light sources;

detecting, using a sensor, light originating from at least two light sources of the plurality of light sources that is reflected from an eye of a user of the electronic device;

generating at least one signal based on the detected light, wherein the at least one signal comprises at least one signal indicating an angle at which the detected light is detected;

determining movement of the eye based on the at least one signal; and

carrying out a function on the electronic device based on the at least one signal.