Image display system and method

• US 20040028293A1
• Filed: 08/07/2002
• Published: 02/12/2004
• Est. Priority Date: 08/07/2002
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Howard, P. Guy, Allen, William J., Gorzynski, Mark E., McClellan, Paul J.
• Granted Patent: US 7,030,894 B2
• Time in Patent Office: Days
• US Class Current: 382/300
• CPC Class Codes: G09G 2330/08 Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
• CPC Class Codes: G09G 2330/10 Dealing with defective pixels
• CPC Class Codes: G09G 2340/0414 Vertical resolution change
• CPC Class Codes: G09G 2340/0421 Horizontal resolution change
• CPC Class Codes: G09G 2340/0435 Change or adaptation of the frame rate of the video stream
• 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 3/007 Use of pixel shift techniques, e.g. by mechanical shift of the physical pixels or by optical shift of the perceived pixels
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

Abstract

A method of displaying an image includes receiving image data for the image, buffering the image data for the image, including creating a frame of the image, defining a first sub-frame and at least a second sub-frame for the frame of the image from the image data, the second sub-frame being spatially offset from the first sub-frame, and alternating between displaying the first sub-frame in a first position and displaying the second sub-frame in a second position spatially offset from the first position.

Claims

1. A method of displaying an image, the method comprising:

receiving image data for the image;

buffering the image data for the image, including creating a frame of the image;

defining a first sub-frame and at least a second sub-frame for the frame of the image from the image data, the second sub-frame being spatially offset from the first sub-frame; and

alternating between displaying the first sub-frame in a first position and displaying the second sub-frame in a second position spatially offset from the first position.

2. The method of claim 1, wherein the image data includes individual pixels of the image, wherein the frame of the image includes a plurality of columns and a plurality of rows of the individual pixels of the image, and wherein defining the first sub-frame and the second sub-frame includes defining a first pixel matrix and at least a second pixel matrix for the frame of the image from the image data.

3. The method of claim 2, wherein alternating between displaying the first sub-frame and displaying the second sub-frame includes overlapping pixels of the first pixel matrix with pixels of the second pixel matrix.

4. The method of claim 1, wherein buffering the image data includes storing all of the image data for the frame of the image, and wherein creating the frame of the image includes retrieving all of the image data for the frame of the image.

5. The method of claim 1, wherein defining the first sub-frame and the second sub-frame includes adjusting a resolution of the image data.

6. The method of claim 5, wherein adjusting the resolution of the image data includes sub-sampling the image data and decreasing the resolution of the image data.

7. The method of claim 5, wherein adjusting the resolution of the image data includes interpolating the image data and one of increasing and decreasing the resolution of the image data.

8. The method of claim 1, wherein the second sub-frame is offset at least one of a vertical distance and a horizontal distance from the first sub-frame, and wherein alternating between displaying the first sub-frame and displaying the second sub-frame includes shifting display of the second sub-frame the at least one of the vertical distance and the horizontal distance from the first sub-frame.

9. The method of claim 1, wherein alternating between displaying the first sub-frame and displaying the second sub-frame includes completing one cycle of displaying the first sub-frame in the first position and displaying the second sub-frame in the second position for the frame of the image.

10. The method of claim 1, wherein alternating between displaying the first sub-frame and displaying the second sub-frame includes displaying the image and effectively increasing a resolution of the image.

11. The method of claim 1, wherein alternating between displaying the first sub-frame and displaying the second sub-frame includes displaying the first sub-frame and displaying the second sub-frame with a display device, including effectively increasing a resolution of the display device.

12. The method of claim 11, wherein the image data is of a resolution greater than the resolution of the display device, and wherein defining the first sub-frame and the second sub-frame includes decreasing the resolution of the image data to the resolution of the display device.

13. The method of claim 11, wherein the image data is of a resolution less than the resolution of the display device, and wherein defining the first sub-frame and the second sub-frame includes increasing the resolution of the image data to the resolution of the display device.

14. The method of claim 1, wherein defining the second sub-frame further includes defining a third sub-frame and a fourth sub-frame for the frame of the image from the image data, the fourth sub-frame being spatially offset from the third sub-frame and the third sub-frame and the fourth sub-frame both being spatially offset from the first sub-frame and the second sub-frame, and

wherein alternating between displaying the first sub-frame and displaying the second sub-frame further includes alternating between displaying the first sub-frame in the first position, displaying the second sub-frame in the second position, displaying the third sub-frame in a third position spatially offset from the first position and the second position, and displaying the fourth sub-frame in a fourth position spatially offset from the first position, the second position, and the third position.

15. The method of claim 14, wherein alternating between displaying the first sub-frame, displaying the second sub-frame, displaying the third sub-frame, and displaying the fourth sub-frame includes completing one cycle of displaying the first sub-frame, the second sub-frame, the third sub-frame, and the fourth sub-frame for the frame of the image.

16. A method of displaying an image with a display device, the method comprising:

receiving image data for the image, the image data including individual pixels of the image;

buffering the image data and creating a frame of the image, the frame of the image including a plurality of columns and a plurality of rows of the pixels of the image;

separating the frame of the image into a first pixel matrix and at least one second pixel matrix spatially offset from the first pixel matrix; and

displaying the first pixel matrix and the second pixel matrix with the display device, including spatially and temporally displaying the second pixel matrix relative to the first pixel matrix.

17. The method of claim 16, wherein spatially and temporally displaying the second pixel matrix relative to the first pixel matrix includes overlapping pixels of the first pixel matrix with pixels of the second pixel matrix.

18. The method of claim 16, wherein buffering the image data includes storing all of the image data for the frame of the image, and wherein creating the frame of the image includes retrieving all of the image data for the frame of the image.

19. The method of claim 16, further comprising:

matching a resolution of the image data to a resolution of the display device.

20. The method of claim 19, wherein matching the resolution of the image data to the resolution of the display device includes sub-sampling the image data and decreasing the resolution of the image data.

21. The method of claim 19, wherein matching the resolution of the image data to the resolution of the display device includes interpolating the image data and one of increasing and decreasing the resolution of the image data.

22. The method of claim 16, wherein displaying the first pixel matrix and the second pixel matrix includes completing one cycle of displaying the first pixel matrix and the second pixel matrix with the display device for the frame of the image.

23. The method of claim 16, wherein spatially and temporally displaying the second pixel matrix relative to the first pixel matrix includes effectively increasing a resolution of the image.

24. The method of claim 16, wherein spatially and temporally displaying the second pixel matrix relative to the first pixel matrix includes effectively increasing a resolution of the display device.

25. The method of claim 16, wherein separating the frame of the image into the first pixel matrix and the second pixel matrix further includes separating the frame of the image into a third pixel matrix and a fourth pixel matrix spatially offset from the third pixel matrix, the third pixel matrix and the fourth pixel matrix both being spatially offset from the first pixel matrix and the second pixel matrix, and wherein displaying the first pixel matrix and the second pixel matrix further includes displaying the first pixel matrix, the second pixel matrix, the third pixel matrix, and the fourth pixel matrix with the display device, including spatially and temporally displaying the first pixel matrix, the second pixel matrix, the third pixel matrix, and the fourth pixel matrix relative to each other.

26. A system for displaying an image, the system comprising:

a buffer adapted to receive image data for the image and buffer the image data to create a frame of the image;

an image processing unit adapted to define a first sub-frame and at least a second sub-frame for the frame of the image from the image data, the second sub-frame being spatially offset from the first sub-frame; and

a display device adapted to alternately display the first sub-frame in a first position and the second sub-frame in a second position spatially offset from the first position.

27. The system of claim 26, further comprising:

a frame rate conversion unit adapted to receive the image data for the image, store the image data in the buffer, and retrieve the image data from the buffer to create the image frame for the image.

28. The system of claim 27, wherein the frame rate conversion unit is adapted to receive the image data for the image at a first rate and retrieve the image data from the buffer at a second rate.

29. The system of claim 26, wherein the image processing unit is adapted to match a resolution of the image data to a resolution of the display device.

30. The system of claim 29, wherein the image processing unit is adapted to sub-sample the image data and decrease the resolution of the image data.

31. The system of claim 29, wherein the image processing unit is adapted to interpolate the image data and one of increase and decrease the resolution of the image data.

32. The system of claim 26, wherein the image data includes individual pixels of the image, wherein the frame of the image includes a plurality of columns and a plurality of rows of the individual pixels of the image, and wherein the image processing unit is adapted to define a first pixel matrix and at least a second pixel matrix of the image from the image data.

33. The system of claim 32, wherein the display device is adapted to overlap pixels of the first pixel matrix with pixels of the second pixel matrix.

34. The system of claim 26, wherein the second sub-frame is spatially offset at least one of a vertical distance and a horizontal distance from the first sub-frame, and wherein the display device is adapted to shift display of the second sub-frame from display of the first sub-frame by the at least one of the vertical distance and the horizontal distance.

35. The system of claim 26, wherein the display device is adapted to complete one cycle of display of the first sub-frame and display of the second sub-frame for the frame of the image.

36. The system of claim 26, wherein the display device is adapted to display the image and effectively increase a resolution of the image.

37. A system for displaying an image, the system comprising:

means for receiving image data for the image at a first rate and creating a frame of the image at a second rate;

means for defining a first sub-frame and at least a second sub-frame for the frame of the image from the image data, the second sub-frame being spatially offset from the first sub-frame; and

means for sequentially displaying the first sub-frame in a first position and the second sub-frame in a second position spatially offset from the first position.

38. The system of claim 37, wherein means for sequentially displaying the first sub-frame and the second sub-frame includes means for displaying the first sub-frame and the second sub-frame with a predetermined resolution, and further comprising:

means for adjusting a resolution of the image data for the image to the predetermined resolution.

39. The system of claim 38, wherein means for sequentially displaying the first sub-frame and the second sub-frame includes means for shifting between the first position and the second position.

40. The system of claim 39, further comprising:

means for synchronizing timing of creating the frame of the image, sequentially displaying the first sub-frame and the second sub-frame for the frame of the image, and shifting between the first position and the second position.

41. The system of claim 37, wherein the image data includes individual pixels of the image, and wherein means for sequentially displaying the first sub-frame and the second sub-frame includes means for overlapping pixels of the first sub-frame with pixels of the second sub-frame.