DISPLAY RESOLUTION INCREASE WITH MECHANICAL ACTUATION

• US 20120188245A1
• Filed: 01/20/2011
• Published: 07/26/2012
• Est. Priority Date: 01/20/2011
• Status: Abandoned Application

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Hyatt, Edward Craig
• Application Number:
  US13/010,692
• Publication Number:
  US 20120188245A1
• Time in Patent Office: Days
• US Class Current: 345/428
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G09G 2340/12 Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
• 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 5/026 Control of mixing and/or overlay of colours in general G09G5/022 and G09G5/024 take precedence
• CPC Class Codes: G09G 5/377 for mixing or overlaying two or more graphic patterns G09G5/02, G09G5/397 take precedence
• CPC Class Codes: G09G 5/397 Arrangements specially adapted for transferring the contents of two or more bit-mapped memories to the screen simultaneously, e.g. for mixing or overlay G09G5/02 takes precedence

Abstract

There are provided apparatuses and methods for increasing the pixel density of a digital display through mechanical actuation. In some embodiments, a display device is described having a processor configured to provide an image for display and a memory coupled to the processor. The memory stores the image and is configured to map the image to a pixel matrix. A display controller is coupled to the memory and configured to sample portions of the image and to store the portions of the image into planes. Each sampled portion comprises a different set of pixels of the pixel matrix. A display is coupled to the display controller and is configured to display the contents of the sampled planes. In particular, the display controller is configured to sequentially provide the sampled planes to the display for sequential display. At least one actuator is coupled to the display to displace the display for the displaying of the sampled planes, so that pixels of each plane are displayed in a unique location from the pixels of other planes.

Claims

1. A display device comprising:

a processor configured to read an image for display;

a memory coupled to the processor configured to store the image and to map the image to a pixel matrix;

a display controller coupled to the memory, the controller configured to sample portions of the image and store the portions of the image into planes, wherein each sampled portion comprises a different set of pixels of the pixel matrix;

a display coupled to the controller, the display configured to display the contents of the sampled planes, wherein the display controller is configured to sequentially provide the sampled planes to the display; and

at least one actuator coupled to the display to displace the display so that the contents of each plane are displayed in a unique position relative to the contents of the other planes.

2. The display device of claim 1, wherein the display comprises a liquid crystal display.

3. The display device of claim 1, wherein the display comprises a light emitting diode display.

4. The display device of claim 1, wherein the at least one actuator comprises at least one piezo element.

5. The display device of claim 1, wherein the at least one actuator comprises at least one magnetic element.

6. The display device of claim 1, wherein the display controller actuates the at least one actuator.

7. The display device of claim 1, wherein the at least one actuator comprises a first actuator configured to displace the display in a first direction, and a second actuator configured to displace the display in a second direction generally different from the first direction.

8. The display device of claim 1 further comprising at least one lens through which light emitted from the display passes.

9. The display device of claim 8 further comprising at least one actuator coupled to the lens and configured to shift the lens to displace the location of the contents of the planes.

10. The display device of claim 1 further comprising at least one mirror configured to reflect light emitted from the display.

11. The display device of claim 10 further comprising at least one actuator coupled to the mirror and configured to displace the mirror to alter the location of the content of the planes.

12. A method of increasing resolution through mechanical actuation comprising:

sending, by a processor, an image to a memory buffer;

mapping the image to a pixel matrix;

dividing the pixel matrix with the image into multiple planes, wherein each plane comprises a different set of pixels of the image;

sequentially displaying the planes with their respective set of pixels; and

shifting the display with an actuator so that pixels of each plane display in a unique location.

13. The method of claim 12, wherein the pixel matrix is divided into four planes.

14. The method of claim 12, wherein the method is configured to multiply an effective pixel density by a factor of at least two.

15. The method of claim 12, wherein shifting the display comprises shifting the display in a first direction for display of pixels of a first plane and in a second direction for display of pixels of a second plane.

16. The method of claim 12 further comprising shifting a lens through which light from the display passes.

17. The method of claim 12 further comprising displacing a mirror which reflects light from the display.

18. A display device comprising:

a processor configured to read in an image having a first resolution;

a memory buffer coupled to the processor and configured to receive the image;

a display controller coupled to the memory buffer, the display controller configured to sample a first portion of the image and save the first portion of the image into a first plane, and sample a second portion of the image and save the second portion of the image into a second plane wherein the first portion and the second portion comprise different portions of the image;

a display coupled to the display controller, the display comprising a number of physical pixels which corresponds to a number of pixels in the first and second portions of the image; and

an actuator coupled to the display, wherein the display is configured to sequentially display the pixels of the first plane and the second plane, wherein further the actuator is configured to displace the display after display of the pixels of the first plane so that the pixels of the second plane are displayed in a second position.

19. The display device of claim 18 further comprising:

a lens through which light from the display passes; and

a mirror configured to reflect light from the display for viewing.

20. The display device of claim 20 comprising a heads-up display.