Generating single-color sub-frames for projection

• US 20070097017A1
• Filed: 11/02/2005
• Published: 05/03/2007
• Est. Priority Date: 11/02/2005
• Status: Abandoned Application

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Damera-Venkata, Niranjan, Widdowson, Simon, Chang, Nelson
• Application Number:
  US11/265,241
• Publication Number:
  US 20070097017A1
• Time in Patent Office: Days
• US Class Current: 345/1.3
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 2360/18 Use of a frame buffer in a display terminal, inclusive of the display panel
• CPC Class Codes: G09G 3/002 to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607

Abstract

A method of displaying images with a display system. The method includes receiving image data for the images. A plurality of multiple-color frames corresponding to the image data are generated. A first single-color frame is generated based on the plurality of multiple-color frames. The first single-color frame is processed, thereby generating a first processed single-color sub-frame. A first plurality of single-color sub-frames are generated based on the first processed single-color sub-frame. The first plurality of single-color sub-frames are projected onto a target surface with a first projector.

Claims

1. A method of displaying images with a display system, the method comprising:

receiving image data for the images;

generating a plurality of multiple-color frames corresponding to the image data;

generating a first single-color frame based on the plurality of multiple-color frames;

processing the first single-color frame, thereby generating a first processed single-color sub-frame;

generating a first plurality of single-color sub-frames based on the first processed single-color sub-frame; and

projecting the first plurality of single-color sub-frames onto a target surface with a first projector.

2. The method of claim 1, wherein each multiple-color frame includes a plurality of color fields, each color field corresponding to a different color.

3. The method of claim 2, further comprising:

combining a first one of the color fields from each of the multiple-color frames to generate the first single-color frame.

4. The method of claim 3, further comprising:

combining a second one of the color fields from each of the multiple-color frames to generate a second single-color frame;

processing the second single-color frame, thereby generating a second processed single-color sub-frame;

generating a second plurality of single-color sub-frames based on the second processed single-color sub-frame; and

projecting the second plurality of single-color sub-frames onto the target surface with a second projector.

5. The method of claim 4, wherein the sub-frames projected by the second projector at least partially overlap the sub-frames projected by the first projector.

6. The method of claim 4, wherein the single-color of the first plurality of sub-frames is different than the single-color of the second plurality of sub-frames.

7. The method of claim 1, wherein the first processed single-color sub-frame is generated based on maximization of a probability that a simulated image is the same as the image data.

8. The method of claim 7, wherein the simulated image is defined as a summation of up-sampled, filtered, and geometrically transformed sub-frames.

9. The method of claim 8, wherein the geometric transformation of the sub-frames is represented by an operator that geometrically transforms the sub-frames based on relative positions of projectors in the display system with respect to a hypothetical reference projector.

10. The method of claim 1, wherein the processing of the first single-color frame is performed by a graphical processing unit (GPU).

11. A system for displaying images based on received image data, the system comprising:

a frame generator configured to generate a plurality of multiple-color frames corresponding to the received image data;

a processor configured to generate a first single-color frame based on the plurality of multiple-color frames;

a processing unit configured to process the first single-color frame, thereby generating single-color sub-frame data for a first plurality of single-color sub-frames; and

a first projector configured to project the first plurality of single-color sub-frames onto a target surface.

12. The system of claim 11, wherein each of the multiple-color frames includes a plurality of color fields corresponding to different colors.

13. The system of claim 12, wherein the processor is configured to generate the first single-color frame by combining a first one of the color fields from each of the multiple-color frames.

14. The system of claim 13, further comprising:

a memory adapted to store the generated plurality of multiple-color frames.

15. The system of claim 13, wherein the processor is configured to combine a second one of the color fields from each of the multiple-color frames to form a second single-color sub-frame.

16. The system of claim 15, wherein the single-color of the first single-color sub-frame is different than the single-color of the second single-color sub-frame.

17. The system of claim 11, wherein the processing unit geometrically transforms the first single-color frame.

18. The system of claim 17, wherein the geometric transformation is based on a position of the first projector with respect to a hypothetical reference projector.

19. The system of claim 11, wherein the processing unit is a graphical processing unit (GPU).

20. The system of claim 11, wherein the processing unit is a field programmable gate array (FPGA).

21. The system of claim 11, wherein the processing unit is an application specific integrated circuit (ASIC).

22. A system for generating sub-frames for projection onto a viewing surface, the system comprising:

means for receiving image data;

means for generating a plurality of multiple-color frames corresponding to the image data, each of the multiple-color frames including a plurality of color fields corresponding to different colors;

means for combining a first one of the color fields from each of the multiple-color frames to form a first single-color frame; and

means for processing the first single-color frame, thereby generating processed single-color sub-frame data for a first plurality of single-color sub-frames.

23. The system of claim 22, further comprising:

means for combining a second one of the color fields from each of the multiple-color frames to form a second single-color frame.

24. The system of claim 23, further comprising:

means for processing the second single-color frame, thereby generating processed single-color sub-frame data for a second plurality of single-color sub-frames.

25. The system of claim 22, wherein the means for processing geometrically transforms the first single-color frame.

26. The system of claim 25, wherein the geometric transformation is based on a position of a projector with respect to a hypothetical reference projector.

27. A computer-readable medium having computer-executable instructions for performing a method-of generating low-resolution sub-frames for projection onto a viewing surface, the method comprising:

receiving image data;

generating a plurality of multiple-color frames corresponding to the image data, each of the multiple-color frames including a plurality of color fields, each color field corresponding to a different color;

combining a first one of the color fields from each of the multiple-color frames to form a first single-color frame;

processing the first single-color frame with a graphical processing unit, thereby generating a first set of processed single-color sub-frame data; and

generating a first plurality of single-color sub-frames based on the first set of processed single-color sub-frame data.

28. The computer-readable medium of claim 27, wherein the method further comprises:

combining a second one of the color fields from each of the multiple-color frames to form a second single-color frame;

processing the second single-color frame with the graphical processing unit, thereby generating a second set of processed single-color sub-frame data; and

generating a second plurality of single-color sub-frames based on the second set of processed single-color sub-frame data.

29. The computer-readable medium 27, wherein the first set of processed single-color sub-frame data is generated based on maximization of a probability that a stimulated image is the same as the image data.