Method to render global 5 DoF motion effect with multiple local force-feedback

Patent metadata

Field	Value
Publication number	US-9717997-B2
Application number	US-201314391496-A
Country	US
Kind code	B2
Filing date	Apr 10, 2013
Priority date	Apr 13, 2012
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

In order to generate force feedback data for a haptic device for providing simulated six degrees of freedom movement, a three dimensional acceleration component corresponding to the movement to be simulated is determined, a three dimensional velocity component corresponding to the movement to be simulated is determined and control signals for controlling at least three force feedback devices are determined, wherein each of the three force feedback devices provides three dimensional force effects to a fixation point associated to each of it, the three force feedback devices being arranged at defined positions with regard to each other, and the three fixation points define a geometric plane.

First claim

The invention claimed is:

1. A method of automatic generation of force feedback data for a haptic device, wherein the method comprises:
determining a three dimensional acceleration component corresponding to a movement to be simulated;
determining a three dimensional velocity component corresponding to the movement to be simulated;
determining control signals for controlling three force feedback devices, wherein each of the three force feedback devices provides three dimensional force effects to a fixation point associated with each of the three force feedback devices, the three force feedback devices being arranged at defined positions with regard to each other, and the three fixation points define a geometric plane, the defined positions moving over time.

2. The method according to claim 1 , wherein the determining of the control signals for controlling the three force feedback devices comprises determining three dimensional displacement of each fixation point depending on the three dimensional acceleration component and the three dimensional angular velocity.

3. The method according to claim 2 , wherein the determining of the three dimensional displacement of each fixation point comprises: applying a scaling factor to scale the three dimensional displacements to be determined such that the workspace of the force feedback devices is utilized.

4. The method according to claim 1 , wherein the three dimensional displacements of the three fixation points are determined under the assumption that the fixation points are located in a left armrest, a right armrest and a headrest of a chair, respectively.

5. The method according to claim 1 , wherein the determining of the three dimensional displacement of each fixation point is based on a skeleton model.

6. The method according to claim 1 , wherein the movement to be simulated being based on at least part of a movie or gaming content.

7. The method according to claim 6 , wherein the movement to be simulated is controlled back according to said at least part of a movie or gaming content.

8. A device configured for rendering haptic interactions, wherein the device comprises at least three force feedback devices, wherein each of the three force feedback devices provides three dimensional force effects to a fixation point and the three force feedback devices are arranged at defined positions with regard to each other, and the three fixation points define a geometric plane, the defined positions moving over time.

9. The device according to claim 8 , wherein the device is integrated into a chair and one of the force feedback devices is integrated into the left armrest, the right armrest and the headrest, respectively.

10. The device according to claim 9 , wherein at least one further force feedback device is integrated into at least one legrest.

11. The device according to claim 9 , further comprising a control unit that generates control signals to control the at least three force feedback devices dependent on each other in a way that the movements of the fixation points of the at least three force feedback devices provide six degrees of freedom movement to an object fixed between the three fixation points.

12. Control unit configured for controlling a haptic device, wherein the control unit comprises at least one processor configured for:
determining a three dimensional acceleration component corresponding to a movement to be simulated;
determining a three dimensional velocity component corresponding to the movement to be simulated;
generating control signals for controlling at least three force feedback devices, wherein each of the at least three force feedback devices provides three dimensional force effects to a fixation point associated with each of the three force feedback devices, the at least three force feedback devices being arranged at defined positions with regard to each other, the defined positions moving over time.

13. Computer program product comprising instructions of program code for executing steps of the method according to claim 1 , when said program is executed on a computer.

14. The control unit according to claim 12 , wherein the at least one processor is further configured for determining three dimensional displacement of each fixation point depending on the three dimensional acceleration component and the three dimensional angular velocity.

15. The control unit according to claim 14 , wherein the at least one processor is further configured for applying a scaling factor to scale the three dimensional displacements to be determined such that the workspace of the force feedback devices is utilized.

16. The control unit according to claim 12 , wherein the at least one processor is further configured for determining the three dimensional displacements of the three fixation points under the assumption that the fixation points are located in a left armrest, a right armrest and a headrest of a chair, respectively.

17. The control unit according to claim 12 , wherein the determining of the three dimensional displacement of each fixation point is based on a skeleton model.

18. The control unit according to claim 12 , wherein the movement to be simulated being based on at least part of a movie or gaming content.

19. The control unit according to claim 12 , wherein the at least one processor is configured for controlling back the movement to be simulated according to said at least part of a movie or gaming content.

Assignees

• Thomson Licensing

Inventors

• Danieau Fabien
• Fleureau Julien
• Guillotel Philippe
• Mollet Nicolas
• Lecuyer Anatole

Classifications

• G06F3/016

  Input arrangements with force or tactile feedback as computer generated output to the user · CPC title

• G08B6/00

  Tactile signalling systems, e.g. tactile personal calling systems · CPC title

• A63F2300/10

  characterized by input arrangements for converting player-generated signals into game device control signals · CPC title

• A63F2300/1037

  being specially adapted for converting control signals received from the game device into a haptic signal, e.g. using force feedback · CPC title

• G09B9/00

  Simulators for teaching or training purposes (for the use of weapons F41; computing aspects G06; {protocols for games, networked simulations or virtual reality H04L67/131}) · CPC title