Multi-touch device having dynamic haptic effects
A system for generating haptic effects senses at least two generally simultaneous touches on a touchscreen and, in response, generates a dynamic haptic effect.
1. A multi-touch device comprising:
a touchscreen;
a processor coupled to the touchscreen; and
a haptic feedback system coupled to the processor;
wherein the processor is adapted to sense at least two generally concurrent touches on a touchscreen; and
the processor is adapted to generate through the haptic feedback system a dynamic haptic effect in response to the sensing;
wherein the dynamic haptic effect is a vibration that comprises a variation of at least one parameter.
2. The multi-touch device of claim 1 , wherein the sensing comprises a determination that the concurrent touches apply pressure at each contact point.
3. The multi-touch device of claim 1 , wherein the concurrent touches apply different pressure at each contact point.
4. The multi-touch device of claim 1 , wherein the sensing comprises a determination of the concurrent touches as touches from different fingers.
5. A computer readable medium having instructions stored thereon that, when executed by a processor, causes the processor to:
sense at least two generally concurrent touches on a touchscreen; and
generate a dynamic haptic effect in response to the sensing;
wherein the dynamic haptic effect is a vibration that comprises a variation of at least one parameter.
6. The computer readable medium of claim 5 , wherein the sensing comprises a determination that the concurrent touches apply pressure at each contact point.
7. The computer readable medium of claim 5 , wherein the sensing comprises a determination of the concurrent touches as touches from different fingers.
8. The computer readable medium of claim 5 , wherein the sensing comprises determining a location of the touches.
9. The computer readable medium of claim 5 , wherein the sensing comprises determining a number of touches on the touchscreen.
10. The computer readable medium of claim 5 , wherein the at least one parameter is one or more of amplitude, frequency and duration.
11. The computer readable medium of claim 5 , wherein the dynamic haptic effect is generated by at least one actuator.
12. The computer readable medium of claim 5 , wherein the sensing comprises a first determination that a first finger and a second finger are being moved, and the dynamic haptic effect comprises changing the parameter.
13. The computer readable medium of claim 5 , wherein the sensing comprises a determination that a first finger and a second finger created a boundary box and the box is being dragged, wherein the dynamic haptic effect comprises generating a dragging.
14. The computer readable medium of claim 5 , wherein the dynamic haptic effect is generated substantially solely at points of contact of the touches.
15. A method of generating haptic effects comprising:
sensing at least two generally concurrent touches on a touchscreen; and
generating a dynamic haptic effect in response to the sensing;
wherein the dynamic haptic effect is a vibration that comprises a variation of at least one parameter.
16. The method of claim 15 , wherein the sensing comprises a determination that the concurrent touches apply pressure at each contact point.
17. The method of claim 16 , wherein the concurrent touches apply different pressure at each contact point.
18. The method of claim 15 , wherein the sensing comprises a determination of the concurrent touches as touches from different fingers.