Targeted haptic projection

1. A non-transitory computer readable medium having instructions stored thereon that, when executed by a processor, cause the processor to provide haptic functionality by:

determining a location of a user body area relative to a location of a haptic device, wherein the haptic device comprises an ultrasound emitter;

determining an intensity threshold associated with the user body area;

determining a haptic effect and an intensity that the haptic effect would have at the user body area;

projecting the haptic effect to the user body area by the ultrasound emitter of the haptic device when the intensity does not exceed the intensity threshold; and

preventing the haptic effect from being projected to the user body area when the intensity exceeds the intensity threshold.

2. The non-transitory computer readable medium of claim 1 , wherein the instructions cause the processor to provide the haptic functionality further by:

determining a change in the location of the user body area; and

adjusting the projecting based on the change.

3. The non-transitory computer readable medium of claim 2 , wherein the adjusting comprises moving the ultrasound emitter based on the change.

4. The non-transitory computer readable medium of claim 1 , wherein the location of the user body area is determined based on one or more images or sounds.

5. The non-transitory computer readable medium of claim 1 , wherein the haptic effect corresponds to a notification or an alarm.

6. The non-transitory computer readable medium of claim 5 , wherein the notification or the alarm is received from a communication device.

7. The non-transitory computer readable medium of claim 1 , wherein the haptic effect corresponds to a user movement or user interaction or to multimedia.

8. The non-transitory computer readable medium of claim 7 , wherein the determining of the haptic effect comprises:

receiving a haptic track related to the multimedia; and

determining corresponding haptic parameters for the haptic device.

9. A method of providing haptic functionality, comprising:

determining a location of a user body area relative to a location of a haptic device, wherein the haptic device comprises an ultrasound emitter;

determining an intensity threshold associated with the user body area;

determining a haptic effect and an intensity that the haptic effect would have at the user body area; and

projecting the haptic effect to the user body area by the ultrasound emitter of the haptic device when the intensity does not exceed the intensity threshold; and

preventing the haptic effect from being projected to the user body area when the intensity exceeds the intensity threshold,

wherein the user body area is one of a plurality of user body areas to which the ultrasound emitter can direct the haptic effect, wherein the plurality of user body areas are associated with different respective intensity thresholds, and wherein the intensity threshold that is determined is one of the different respective intensity thresholds.

10. The method of claim 9 , further comprising:

determining a change in the location of the user body area; and

adjusting the projecting based on the change.

11. The method of claim 10 , wherein the adjusting comprises moving the ultrasound emitter based on the change.

12. The method of claim 9 , wherein the location of the user body area is determined based on one or more images or sounds.

13. The method of claim 9 , wherein the haptic effect corresponds to a notification or an alarm.

14. The method of claim 13 , wherein the notification or the alarm is received from a communication device.

15. The method of claim 9 , wherein the haptic effect corresponds to a user movement or user interaction performed or to multimedia.

16. The method of claim 15 , wherein the determining of the haptic effect comprises:

receiving a haptic track related to the multimedia; and

determining corresponding haptic parameters for the haptic device.

17. A system for providing haptic functionality, comprising:

a haptic device that comprises an ultrasound emitter;

a processor in communication with the haptic device, wherein the processor is configured

to determine a location of a user body area relative to a location of the haptic device;

to determine an intensity threshold associated with the user body area;

to determine a haptic effect and an intensity that the haptic effect would have at the user body area; and

to cause the ultrasound emitter of the haptic device to project the haptic effect to the user body area when the intensity does not exceed the intensity threshold; and

to prevent the haptic effect from being projected to the user body area when the intensity exceeds the intensity threshold.

18. The non-transitory computer-readable medium of claim 1 , wherein different user body areas are associated with different respective intensity thresholds in the non-transitory computer-readable medium.

19. The non-transitory computer-readable medium of claim 1 , wherein the instructions cause the processor to select the user body area from among a plurality of user body areas.

20. The non-transitory computer-readable medium of claim 1 , wherein the instructions further cause the processor to determine parameters of the haptic effect, the parameters including a direction in which to project the haptic effect from the ultrasound emitter.