Composite display

• US 20090002270A1
• Filed: 10/02/2007
• Published: 01/01/2009
• Est. Priority Date: 06/28/2007
• Status: Active Grant

• Current Assignee: Snaptrack Incorporated (Qualcomm, Inc.)
• Original Assignee: Boundary Net, Inc.
• Inventors: Chui, Clarence
• Granted Patent: US 8,111,209 B2
• Time in Patent Office: Days
• US Class Current: 345/31
• CPC Class Codes: G09F 19/12 using special optical effects
• CPC Class Codes: G09F 9/33 being semiconductor devices, e.g. diodes
• CPC Class Codes: G09F 9/37 being movable elements G09F9/302 takes precedence
• CPC Class Codes: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: G09G 3/005 forming an image using a quickly moving array of imaging elements, causing the human eye to perceive an image which has a larger resolution than the array, e.g. an image on a cylinder formed by a rotating line of LEDs parallel to the axis of rotation
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]

Abstract

A composite display is disclosed. A first paddle has a first plurality of pixel elements wherein the first paddle is arranged to sweep out a first area during a first paddle cycle. A second paddle has a second plurality of pixel elements wherein the second paddle is arranged to sweep out a second area during a second paddle cycle and wherein the first and second areas include first and second nonoverlapping portions. A first pixel element on the first paddle is configured to be activated when the first pixel element coincides with a first image pixel. A second pixel element on the second paddle is configured to be activated when the second pixel element coincides with a second image pixel. An image corresponding to the first and second image pixels is represented on the composite display by activating the first and second pixel elements.

Claims

1. A composite display including:

a first paddle having a first plurality of pixel elements wherein the first paddle is arranged to sweep out a first area during a first paddle cycle;

a second paddle having a second plurality of pixel elements wherein the second paddle is arranged to sweep out a second area during a second paddle cycle and wherein the first and second areas include first and second nonoverlapping portions;

a first pixel element on the first paddle configured to be activated when the first pixel element coincides with a first image pixel; and

a second pixel element on the second paddle configured to be activated when the second pixel element coincides with a second image pixel;

wherein an image corresponding to the first and second image pixels is represented on the composite display by activating the first and second pixel elements.

2. A display as recited in claim 1, wherein the first and second areas do not overlap in an x-y projection.

3. A display as recited in claim 1, wherein the first image pixel corresponds to the first nonoverlapping portion in the first area.

4. A display as recited in claim 1, wherein an overlapping portion of the first and second areas overlap in an x-y projection.

5. A display as recited in claim 4, wherein the first image pixel corresponds to the overlapping portion in the first area.

6. A display as recited in claim 1, wherein at least one of the first pixel element and the second pixel element is a light emitting diode (LED).

7. A display as recited in claim 1, wherein activating includes activating the first pixel element over a specified duty cycle.

8. A display as recited in claim 1, wherein the first image pixel is mapped to a first temporal pixel associated with the first pixel element, such that the first pixel element coincides with the first image pixel.

9. A display as recited in claim 8, wherein the first temporal pixel includes a first pixel element on the first paddle and a first time in a first paddle cycle.

10. A display as recited in claim 8, wherein the first temporal pixel includes a first pixel element on the first paddle and a first angle in a first paddle cycle.

11. A display as recited in claim 8, wherein the first temporal pixel is mapped to an intensity value.

12. A display as recited in claim 1, wherein the first image pixel is mapped to a first temporal pixel and a second temporal pixel.

13. A display as recited in claim 1, wherein the first image pixel is mapped to a first temporal pixel and a second temporal pixel wherein a pixel element associated with the first temporal pixel is sometimes activated and a pixel element associated with the second temporal pixel is sometimes activated.

14. A display as recited in claim 1, wherein at least one of the first and second paddles is configured to rotate about an axis of rotation.

15. A display as recited in claim 1, wherein the first and second paddles are each configured sweep in phase with each other.

16. A display as recited in claim 1, wherein the first and second paddles are each configured to sweep out of phase with each other.

17. A display as recited in claim 1, wherein the first and second paddles are arranged to sweep in different sweep planes.

18. A display as recited in claim 1, wherein the first and the second paddles have different sizes.

19. A display as recited in claim 1, wherein at least one of the first and second paddles is configured to start from rest by ramping up from an initial speed to a final speed.

20. A display as recited in claim 1, wherein control data for at least one of the first and second pixel elements is provided according to a clock.

21. A display as recited in claim 1, wherein the first and second pixel elements are activated based on data received via at least one optical fiber.

22. A display as recited in claim 1, wherein the first image pixel is mapped to a first temporal pixel that is closest to the first image pixel.

23. A display as recited in claim 1, wherein an overlapping portion of the first and second areas overlap in an x-y projection and wherein a mask is configured to occlude the overlapping portion.

24. A display as recited in claim 1, wherein an overlapping portion of the first and second areas overlap in an x-y projection and wherein at least one of the first and second paddles is shaped such that is occludes the overlapping portion.

25. A method of providing a composite display including:

sweeping out a first area during a first paddle cycle, wherein the first area is associated with a first paddle having a plurality of pixel elements;

sweeping out a second area during a second paddle cycle and wherein the first and second areas include first and second nonoverlapping portions, wherein the second area is associated with a second paddle having a plurality of pixel elements;

activating a first pixel element on the first paddle when the first pixel element coincides with a first image pixel; and

activating a second pixel element on the second paddle when the second pixel element coincides with a second image pixel;

wherein an image corresponding to the first and second image pixels is represented on the composite display by activating the first and second pixel elements.