Multi-perspective display of an image using illumination switching

Patent metadata

Field	Value
Publication number	US-11048108-B2
Application number	US-201916573915-A
Country	US
Kind code	B2
Filing date	Sep 17, 2019
Priority date	Sep 17, 2019
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

According to one implementation, a multi-perspective image display system includes a motor configured to spin a rotor, a display screen coupled to the rotor, and a controller. The controller is configured to cause the motor to spin the display screen, using the rotor, about an axis of rotation at a spin rate, and to determine, based on the spin rate, an illumination on-time for an illumination source of the display screen. The controller is also configured to sequentially render each of multiple different perspectives of an image on the display screen during each revolution of the display screen about the axis of rotation and, concurrently with sequentially rendering each of the plurality of perspectives of the image on the display screen, to strobe the illumination source of the display screen based on the determined illumination on-time to display the multiple different perspectives of the image.

First claim

What is claimed is:

1. A multi-perspective image display system comprising:
a motor configured to spin a rotor;
a display screen coupled to the rotor, the display screen having an illumination source;
a controller configured to:
cause the motor to spin the display screen, using the rotor, about an axis of rotation at a spin rate;
while the motor is causing the display screen to spin, determine, based on the spin rate, an illumination on-time for strobing the illumination source of the display screen;
sequentially render a plurality of perspectives of an image, one after another, on the display screen during each revolution of the display screen about the axis of rotation; and
concurrently with sequentially rendering, for each of the plurality of perspectives of the image, strobe the illumination source of the display screen for a period corresponding to the determined illumination on-time to display each of the plurality of perspectives of the image during the determined illumination on-time on the display screen.

2. The multi-perspective image display system of claim 1 , wherein the spin rate comprises a predetermined spin rate and a variance from the predetermined spin rate, and wherein the controller is further configured to:
detect the variance from the predetermined spin rate; and
adjust the spin rate to substantially match the predetermined spin rate using the motor.

3. The multi-perspective image display system of claim 1 , wherein the spin rate comprises a predetermined spin rate and a variance from the predetermined spin rate, and wherein the controller is further configured to:
detect the variance from the predetermined spin rate;
modify the determined on-time for the illumination source based on the variance from the predetermined spin rate, resulting in an adjusted illumination on-time; and
strobe the illumination source of the display screen based on the adjusted illumination on-time while spinning the display at the spin rate using the motor and the rotor.

4. The multi-perspective image display system of claim 1 , wherein the display screen is an emissive display screen and the illumination source is a backlight of the emissive display screen.

5. The multi-perspective image display system of claim 4 , wherein the display screen comprises an organic light-emitting diode (OLED) display screen, an in-plane switching (IPS) liquid-crystal display (LCD) screen, or a twisted nematic field effect (TN) LCD screen.

6. The multi-perspective image display system of claim 1 , wherein the controller is configured to determine the illumination on-time further based on a predetermined viewing angle for each of the plurality of perspectives of the image to be rendered on the display screen.

7. The multi-perspective image display system of claim 6 , wherein the controller is configured to determine the illumination on-time further based on a response time of the display screen.

8. The multi-perspective image display system of claim 7 , wherein the controller is configured to determine the illumination on-time further based on a ratio of the predetermined viewing angle to the spin rate, minus the response time of the display screen.

9. The multi-perspective image display system of claim 1 , wherein the controller is configured to determine the illumination on-time further based on a response time of the display screen.

10. The multi-perspective image display system of claim 1 , wherein the display screen is implemented as a reflective display screen and the illumination source is a frontlight.

11. A method for use by a multi-perspective image display system including a controller, a motor configured to spin a rotor, and a display screen coupled to the rotor, the method comprising:
causing, by the controller, motor to spin the display screen, using the rotor, about an axis of rotation at a spin rate;
while the motor is causing the display screen to spin, determining, by the controller, based on the spin rate, an illumination on-time for strobing the illumination source of the display screen;
sequentially rendering, by the controller, a plurality of perspectives of an image, one after another, on the display screen during each revolution of the display screen about the axis of rotation; and
concurrently with sequentially rendering, for each of the plurality of perspectives of the image, strobing, by the controller, the illumination source of the display screen for a period corresponding to the determined illumination on-time to display each of the plurality of perspectives of the image during the determined illumination on-time on the display screen.

12. The method of claim 11 , wherein the spin rate comprises a predetermined spin rate and a variance from the predetermined spin rate, the method further comprising:
detecting, by the controller, the variance from the predetermined spin rate; and
adjusting the spin rate, by the controller using the motor, to substantially match the predetermined spin rate.

13. The method of claim 11 , wherein the spin rate comprises a predetermined spin rate and a variance from the predetermined spin rate, the method further comprising:
detecting, by the controller, the variance from the predetermined spin rate;
modifying, by the controller, the determined on-time for the illumination source based on the variance from the predetermined spin rate, resulting in an adjusted illumination on-time; and
strobing, by the controller, the illumination source of the display screen based on the adjusted illumination on-time while spinning the display at the spin rate using the motor and the rotor.

14. The method of claim 11 , wherein the display screen is an emissive display screen and the illumination source is a backlight of the emissive display screen.

15. The method of claim 14 , wherein the display screen comprises an organic light-emitting diode (OLED) display screen, an in-plane switching (IPS) liquid-crystal display (LCD) screen, or a twisted nematic field effect (TN) LCD screen.

16. The method of claim 11 , wherein the controller is configured to determine the illumination on-time further based on a predetermined viewing angle for each of the plurality of perspectives of the image to be rendered on the display screen.

17. The method of claim 16 , wherein the controller is configured to determine the illumination on-time further based on a response time of the display screen.

18. The method of claim 17 , wherein the controller is configured to determine the illumination on-time further based on a ratio of the predetermined viewing angle to the spin rate, minus the response time of the display screen.

19. The method of claim 11 , wherein the controller is configured to determine the illumination on-time further based on a response time of the display screen.

20. The method of claim 11 , wherein the display screen is implemented as a reflective display screen and the illumination source is a frontlight.

Assignees

• Disney Entpr Inc

Inventors

• Nocon Nathan D
• Thornton Stephen A
• Wong Clifford
• Haseltine Eric C

Classifications

• G02F1/133602

  Direct backlight · CPC title

• H02P7/03

  for controlling the direction of rotation of DC motors · CPC title

• G06F3/011 Primary

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title

• G06F1/1626

  with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs] · CPC title

• G02B30/40

  giving the observer of a single two-dimensional [2D] image a perception of depth · CPC title