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1. WO2018031315 - HAPTIC STYLUS

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[ EN ]

CLAIMS

1. A device comprising:

a housing;

a tip configured to be movable with respect to the housing;

a resilient element fixed to the tip, wherein the resilient element includes magnetic material;

a substrate fixed to the housing, wherein a surface of the substrate is positioned to face the resilient element and wherein the resilient element is configured to press against the surface in response to the tip receding toward the housing;

a coil mounted or patterned on the substrate; and

a controller configured to induce haptic feedback via the tip based on applying a signal to the coil, wherein the signal applied is configured to induce a magnetic driving force on the resilient element.

2. The device according to claim 1, wherein the resilient element is formed from an elastomer embedded with magnetic particles.

3. The device according to claim 1, wherein the resilient element includes conductive material and is capacitively coupled to conductive material of the coil.

4. The device according to claim 3, comprising an electrode patterned on the substrate, wherein the electrode is positioned on the substrate to be capacitively coupled with the resilient element.

5. The device according to claim 3, wherein the controller is configured to detect changes in the capacitive coupling based on deformation of the resilient element as it presses against the surface, wherein the controller is configured to detect pressure applied on the tip based on the detected capacitive coupling and wherein the haptic feedback is based on the pressure detected.

6. The device according to claim 1, wherein the device includes a tilt sensor and wherein the haptic feedback is based on output from the tilt sensor.

7. The device according to claim 1, wherein the coil is a planar coil that is patterned on the substrate.

8. The device according to claim 1, comprising a plurality of substrates formed in a pyramid structure, wherein each of at least two substrates is patterned with a planar coil that is magnetically coupled to the resilient element, wherein the controller is configured to simultaneously apply signals on each of the planar coils, wherein in the signals are either the same signal or signals that differ in at least one of amplitude, frequency and phase.

9. The device according to claim 8, wherein the resilient element is a rounded element fitted into the pyramid structure and configured to press against each of the substrates of the pyramid structure.

10. The device according to claim 8, wherein the tip is configured to both tilt and recede into the housing based on contact pressure applied on the tip and wherein the control is configured to apply haptic feedback in three dimensions based on applying signals to each of the planar coils.

11. The device according to claim 8, wherein the controller is configured to detect force applied on the tip in three dimensions based on a detected capacitive coupling between the resilient element and a conductive element on each of the substrates, wherein the conductive element is the planar coil or an electrode patterned on the substrate.

12. The device according to claim 1, wherein the resilient element is a generally flat element that is fixed to the tip at a normal angle with respect to the tip and the coil is mounted on the surface of the substrate and encompassing the resilient element.

13. A method compri sing :

fixing a resilient element to a tip that extends out of a housing and is movable with respect to the housing, wherein the resilient element includes magnetic material;

positioning a substrate to face the resilient element, wherein the substrate is fixed to the housing and wherein the resilient element is configured to press against the surface in response to the tip receding toward the housing;

wherein the substrate includes a coil that is mounted or patterned on the substrate; and

inducing haptic feedback via the tip based on applying a signal on the coil, wherein the signal applied is configured to induce a magnetic driving force on the resilient element.

14. The method according to claim 13 comprising:

detecting pressure on the tip based on changes in the capacitive coupling between the resilient element and a conductive element on the substrate, wherein the changes in capacitive coupling is based on deformation of the resilient element as it presses against the surface; and

defining the haptic feedback based on the pressure detected.

15. The method according to claim 13, comprising:

fitting the resilient element in a pyramid structure formed with a plurality of substrates, wherein at least two of the plurality of substrates includes a coil; and

simultaneously applying signals on each planar coil, wherein in the signals are

either the same signal or signals that differ in at least one of amplitude, frequency and phase.