Pulse Width Modulation Display Pixels with Spatial Manipulation

• US 20100066770A1
• Filed: 09/18/2008
• Published: 03/18/2010
• Est. Priority Date: 09/18/2008
• Status: Abandoned Application

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Agostinelli, John A., Fredlund, John R.
• Application Number:
  US12/212,785
• Publication Number:
  US 20100066770A1
• Time in Patent Office: Days
• US Class Current: 345/691
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• 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 3/02 by tracing or scanning a light beam on a screen
• CPC Class Codes: H04N 9/3129 scanning a light beam on the display screen scanning a light beam on a screen in displays other than projection devices G09G3/02; scanning systems in general G02B26/10; projectors using laser light sources in general H04N9/3161
• CPC Class Codes: H04N 9/3164 using multiple light sources

Abstract

Systems and methods of producing images are provided. Data corresponding to a first set of display pixels is received. When it is determined that a transition occurs in the first set of display pixels, a position of at least one display pixel in the first set of display pixels is adjusted based on the determined transition. The adjustment can involve adjusting a center of a pulse that causes formation of the display pixel away from a center of a modulation window.

Claims

1. A method of producing an image, the method comprising the acts of:

receiving data corresponding to a first set of display pixels;

determining that a transition occurs in the first set of display pixels; and

adjusting a position of at least one display pixel in the first set of display pixels based on the determined transition.

2. The method of claim 1, wherein the adjustment of the position of the at least one display pixel comprises the act of:

adjusting a center of a pulse that causes formation of the display pixel away from a center of a modulation window.

3. The method of claim 2, wherein the pulse is a pulse that directs modulation of a laser.

4. The method of claim 2, wherein the center of the pulse is adjusted such that a portion of the display pixel is moved into a display column of an adjacent display pixel.

5. The method of claim 1, wherein when the at least one display pixel comprises more than one color, the adjustment of the position of the display pixel comprises the acts of:

adjusting a position of one of the colors in a direction of a previous display column; and

adjusting a position of another of the colors in a direction of a subsequent display column.

6. The method of claim 5, wherein the position of the one of the colors is shifted such that a portion of the one of the colors is in the previous display column.

7. The method of claim 6, wherein the position of the one of the colors is shifted such that the entire color is in the previous display column.

8. The method of claim 7, wherein a position of a display pixel in the previous display column is shifted towards a display column adjacent to the previous display column.

9. The method of claim 1, wherein a size of the at least one display pixel is reduced.

10. The method of claim 9, wherein the size of the at least one display pixel is reduced when the at least one display pixel, prior to reduction in size, occupies substantially an entire width of a display column.

11. The method of claim 1, wherein the at least one display pixel comprises more than one color, the method further comprising the acts of:

reducing a width of a pulse that directs modulation of a laser of a first of the colors;

adjusting a center of the pulse that directs modulation of the laser of the first of the colors; and

adjusting a center of a pulse that directs modulation of a laser of a second of the colors.

12. The method of claim 1, wherein the first set of display pixels is displayed on a same horizontal display line.

13. The method of claim 1, wherein the determination of the transition is performed using a single luminance channel.

14. The method of claim 1, wherein the transition is a color transition.

15. The method of claim 1, wherein the transition is an edge in an image formed by the first set of display pixels.

16. A system that produces an image, the system comprising:

an output component that forms an image comprising a first set of display pixels; and

a processor, coupled to the output component, the processor receiving data corresponding to the first set of display pixels, and the processor comprising

logic that determines that a transition occurs in the first set of display pixels; and

logic that adjusts a position of at least one display pixel in the first set of display pixels based on the determined transition.

17. The system of claim 16, wherein the adjustment of the position of the at least one display pixel involves adjusting a center of a pulse that causes formation of the display pixel away from a center of a modulation window.

18. The system of claim 17, wherein the pulse is a pulse that directs modulation of a laser of the output component.

19. The system of claim 17, wherein the center of the pulse is adjusted such that a portion of the display pixel is moved into a display column of an adjacent display pixel.

20. The system of claim 16, wherein when the at least one display pixel comprises more than one color, the adjustment of the position of the display pixel involves adjusting a position of one of the colors in a direction of a previous display column and adjusting a position of another of the colors in a direction of a subsequent display column.

21. The system of claim 20, wherein the position of the one of the colors is shifted such that a portion of the one of the colors is in the previous display column.

22. The system of claim 21, wherein the position of the one of the colors is shifted such that the entire color is in the previous display column.

23. The system of claim 22, wherein a position of a display pixel in the previous display column is shifted towards a display column adjacent to the previous display column.

24. The system of claim 16, wherein a size of the at least one display pixel is reduced.

25. The system of claim 24, wherein the size of the at least one display pixel is reduced when the at least one display pixel, prior to reduction in size, occupies substantially an entire width of a display column.

26. The system of claim 16, wherein the at least one display pixel comprises more than one color, a width of a pulse that directs modulation of a laser of a first of the colors is reduced, a center of the pulse that directs modulation of the laser of the first of the colors is adjusted, and a center of a pulse that directs modulation of a laser of a second of the colors is adjusted.