Method and system for reducing motion sickness in virtual reality ride systems

Patent metadata

Field	Value
Publication number	US-10181212-B2
Application number	US-201514704922-A
Country	US
Kind code	B2
Filing date	May 5, 2015
Priority date	May 9, 2014
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

A virtual reality ride system including a headset, a control unit, and a dynamic platform. The headset includes a display unit configured to display a video of an animated virtual environment. The control unit includes one or more processors configured to perform render processing that renders the video of the virtual environment; event motion processing that generates first data representing motions associated with events in the virtual environment; and low-frequency motion processing that generates second data representing low-frequency vibrations unrelated to the events in the virtual environment. The dynamic platform is configured to produce the motions associated with the events in the virtual environment based on the first data, and to produce the low-frequency vibrations based on the second data. The low-frequency vibrations include a frequency between about 5 Hz and 70 Hz.

First claim

We claim:

1. A virtual reality ride system comprising:
a headset including a display unit configured to display a video of an animated virtual environment;
a dynamic platform; and
a control unit including one or more processors configured to:
render the video of the virtual environment;
generate first data based on events that occur in the virtual environment, wherein the first data represents motions corresponding to the events in the virtual environment; and
generate second data representing low-frequency vibrations, wherein the low-frequency vibrations are unrelated to the events in the virtual environment;

wherein the dynamic platform is configured to, while the headset is displaying the rendered video of the virtual environment, use the first data and the second data to:
move, based on the first data, in synchronization with the display of the rendered video of the virtual environment, wherein the movement of the dynamic platform based on the first data simulates the motions corresponding to the events in the virtual environment; and
move, based on the second data, wherein the movement of the dynamic platform based on the second data includes the low-frequency vibrations and is unrelated to events in the displayed video of the virtual environment,
wherein the low-frequency vibrations include a frequency between about 5 Hz and 70 Hz, and
wherein the dynamic platform is configured to move based on the second data only when the dynamic platform is not moving based on the first data.

2. The virtual reality ride system of claim 1 , wherein the low-frequency vibrations are not perceptible to a human sense of hearing.

3. The virtual reality ride system of claim 1 , wherein the low-frequency vibrations are not perceptible to a human sense of touch.

4. The virtual reality ride system of claim 1 , wherein the video is three-dimensional.

5. The virtual reality ride system of claim 1 , wherein the video shows a first-person perspective of the virtual environment.

6. The virtual reality ride system of claim 1 , wherein the dynamic platform is a seat.

7. The virtual reality system of claim 1 , wherein the headset is configured to produce the low-frequency vibrations unrelated to events in the displayed video of the virtual environment.

8. A method of generating a virtual reality ride, the method comprising:
rendering a video of an animated virtual environment, the video including events in the virtual environment;
determining movements for a dynamic platform based on the events that occur in the virtual environment, wherein the movements correspond to the events in the virtual environment;
determining low-frequency vibrations for the dynamic platform, wherein the low-frequency vibrations have a frequency between about 5 Hz and 70 Hz, and wherein the low-frequency vibrations are unrelated to the events in the virtual environment;
displaying the video on a display; and
moving the dynamic platform, wherein:
the movement of the dynamic platform based on the determined movements is in synchronization with the video of the virtual environment and simulates the motions corresponding to the events in the virtual environment, and
the movement of the dynamic platform based on the low-frequency vibrations occurs only when the dynamic platform is not moving based on the determined movements, and includes the low-frequency vibrations and is unrelated to events in the displayed video of the virtual environment.

9. The method of claim 8 , wherein the low-frequency vibrations are not perceptible to a human sense of hearing.

10. The method of claim 8 , wherein the low-frequency vibrations are not perceptible to a human sense of touch.

11. The method of claim 8 , wherein the video is three-dimensional.

12. The method of claim 8 , wherein the video shows a first-person perspective of the virtual environment.

13. The method of claim 8 , wherein the dynamic platform is a seat.

14. The method of claim 8 , further comprising:
moving a headset, wherein the headset includes the display displaying the video of the animated virtual environment and is configured to produce the low-frequency vibrations unrelated to events in the displayed video of the virtual environment.

15. A non-transitory computer-readable storage medium comprising computer-executable instructions for generating a virtual reality ride, the computer-executable instructions comprising instructions for:
rendering a video of an animated virtual environment, the video including events in the virtual environment;
determining movements for a dynamic platform based on the events that occur in the virtual environment, wherein the movements correspond to the events in the virtual environment;
determining low-frequency vibrations for the dynamic platform, wherein the low-frequency vibrations have a frequency between about 5 Hz and 70 Hz, and wherein the low-frequency vibrations are unrelated to the events in the virtual environment;
displaying the video on a display; and
moving the dynamic platform, wherein:
the movement of the dynamic platform based on the determined movements is in synchronization with the video of the virtual environment and simulates the motions corresponding to the events in the virtual environment, and
the movement of the dynamic platform based on the low-frequency vibrations occurs only when the dynamic platform is not moving based on the determined movements, and includes the low-frequency vibrations and is unrelated to events in the displayed video of the virtual environment.

16. The computer-readable storage medium of claim 15 , wherein the low-frequency vibrations are not perceptible to a human sense of hearing.

17. The computer-readable storage medium of claim 15 , wherein the low-frequency vibrations are not perceptible to a human sense of touch.

18. The computer-readable storage medium of claim 15 , wherein the video is three-dimensional.

19. The computer-readable storage medium of claim 15 , wherein the video shows a first-person perspective of the virtual environment.

20. The computer-readable storage medium of claim 15 , wherein the dynamic platform is a seat.

21. The computer-readable storage medium of claim 15 , wherein the computer-executable instructions further comprise instructions for:
moving a headset, wherein the headset includes the display displaying the video of the animated virtual environment and is configured to produce the low-frequency vibrations unrelated to events in the displayed video of the virtual environment.

Assignees

• Dreamworks Animation Llc
• Dreamworks Animation L L C

Inventors

• Herman Brad Kenneth
• Akmal Shiraz
• Lafollette Bryn

Classifications

• A61M2021/0011

  in a subliminal way, i.e. below the threshold of sensation · CPC title

• G02B27/017

  Head mounted · CPC title

• G06F3/016 Primary

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

• A63F13/428

  involving motion or position input signals, e.g. signals representing the rotation of an input controller or a player's arm motions sensed by accelerometers or gyroscopes · CPC title

• A61M21/00

  Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis · CPC title