Vision corrective display

• US 9,406,253 B2
• Filed: 06/29/2013
• Issued: 08/02/2016
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Blanche, Bradley, Szeto, Raymond
• Primary Examiner(s): Hoang, Phi
• Assistant Examiner(s): BEARD, CHARLES LLOYD
• Application Number:
  US13/931,836
• Publication Number:
  US 20140267284A1
• Time in Patent Office: 1,130 Days
• US Class Current: 1/1
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• 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
• CPC Class Codes: H04N 13/302 for viewing without the aid of special glasses, i.e. using autostereoscopic displays

Abstract

Disclosed are various embodiments that relate to a display that renders corrected images to viewers so that users do not need to wear corrective lenses. The system obtains a vision parameter associated with a viewer and/or content to be displayed. The system receives an image for display to the viewer and modifies the image according to the vision parameter to generate a modified vision corrected image. The system renders the modified region on a rear display while rendering a selective barrier on a front barrier display to direct a vision corrected image to a viewer according to the vision parameter.

Claims

1. A method comprising:

obtaining a visual parameter associated with a degree of severity of a vision impairment of a viewer;

receiving content for display;

modifying display characteristics of the received content according to the visual parameter to generate modified content, the modified content comprising a plurality of reproduced objects, generating the modified content comprising;

determining an object within the received content to reproduce, wherein the object comprises a pixel or a group of pixels;

generating the plurality of reproduced objects based on the object;

determining an offset amount using the visual parameter, the offset amount varying in response to varying severity of the vision impairment of the viewer; and

generating the modified content including the plurality of reproduced objects offset from one another along an axis by the offset amount;

rendering the modified content on a rear display; and

selectively activating a front barrier display to control visibility of the modified content according at least in part to the visual parameter, selectively activating the front barrier display to control the visibility of the modified content comprising;

controlling one or more first areas of the front barrier display to cause a first portion of the modified content rendered on the rear display to be visible to the viewer using the visual parameter; and

controlling one or more second areas of the front barrier display to block a second portion of the modified content rendered on the rear display from visibility by the viewer using the visual parameter.

2. The method of claim 1, wherein obtaining the visual parameter comprises obtaining at least one of a parameter associated with the viewer'"'"'s eyesight, a focal length value of an eye of the viewer, or a corrective lens prescription of the viewer.

3. The method of claim 1, wherein the front barrier display is detachable with respect on the rear display, the detachable front barrier display communicating with the rear display wirelessly.

4. The method of claim 1, further comprising selectively activating the front barrier display to create a parallax barrier.

5. The method of claim 1, further comprising obtaining the visual parameter by obtaining a measure of distance between the viewer and the rear display.

6. The method of claim 1, further comprising selectively activating the front barrier display to block certain portions of the modified content rendered on the rear display from being seen by the viewer while allowing other portions of the modified content rendered on the rear display to be seen by the viewer.

7. The method of claim 1, further comprising selectively activating the front barrier display to prevent the passage of light emitted from the rear display in the direction of the viewer associated with certain portions of the modified content rendered on the rear display while allowing the passage of light emitted from the rear display in the direction of the viewer associated with other portions of the modified content rendered on the rear display.

8. The method of claim 7, further comprising generating the modified content and selectively activating the front barrier display to control visibility of the modified content so that the modified content appears in focus to the viewer.

9. The method of claim 1, further comprising generating the modified content and selectively activating the front barrier display to control visibility of the modified content to account for visual impairment of the viewer.

10. The method of claim 1, further comprising:

rendering the first portion of the modified content on the rear display at a first point in time; and

rendering a third portion of the modified content on the rear display at a third point in time, where the third portion of the modified content rendered on the rear display is visible to the viewer.

11. The method of claim 1, further comprising:

obtaining a first visual parameter and a second visual parameter associated with the viewer;

modifying display characteristics of the received content according to the first visual parameter to generating a first modified content;

modifying display characteristics of the received content according to the second visual parameter to generating a second modified content;

rendering the first and second modified contents on the rear display;

selectively activating a first portion of the front barrier display in a first configuration to allow the viewer to view the first modified content; and

selectively activating a second portion of the front barrier display in a second configuration to allow the viewer to view the second modified content, wherein the first configuration is associated with the first visual parameter and the second configuration is associated with the second visual parameter.

12. The method of claim 11, wherein the first configuration is associated with a first point in time corresponding to a first clock cycle and the second configuration is associated with a second point in time corresponding to a second clock cycle, the first and second clock cycle associating with one or more clock cycle frequencies, wherein each of the one or more clock cycle frequencies is greater than the fastest frame rate that the viewer can perceive.

13. The method of claim 1, further comprising:

receiving a plurality of contents for display to the viewer;

modifying display characteristics of each of the plurality of contents based at least upon the type of each of the plurality of contents to generate a plurality of modified contents;

rendering the plurality of modified contents on the rear display; and

selectively activating the front barrier display to control a first portion of the plurality of modified contents rendered on the rear display to be visible to the viewer and a second portion of the plurality of modified contents rendered on the rear display to be invisible to the viewer according at least in part to the visual parameter.

14. The method of claim 1, wherein the modifying display characteristics of the received content includes at least one of shifting, expanding and distorting at least a portion of the received content according to the visual parameter.

15. The method of claim 1, further comprising obtaining the visual parameter by obtaining a measure of at least one of a distance, a position and an angle with respect on the rear display.

16. The method of claim 1, further comprising obtaining motion of the viewer and selectively activating the front barrier display to control visibility of the modified content according at least in part to the motion of the viewer.

17. The method of claim 1, further comprising obtaining input from the viewer and selectively activating the front barrier display to control visibility of the modified content according at least in part to the input from the viewer, wherein the input from the viewer comprises one or more vision characteristics of the viewer.

18. The method of claim 1, wherein the object comprises a pixel.

19. The method of claim 1, wherein the object comprises a group of pixels.

20. A system comprising:

processing circuitry configured to;

obtain a visual parameter associated with a degree of severity of a vision impairment of a viewer;

receive content for display to the viewer;

modify display characteristics of at least a portion of the image according to the visual parameter to generate a modified content, the modified content comprising a plurality of reproduced objects, the processing circuitry configured to generate the modified content by;

determining an object within the received content to reproduce, wherein the object comprises a pixel or a group of pixels;

generating the plurality of reproduced objects based on the object;

determining an offset amount using the visual parameter, the offset amount varying in response to varying severity of the vision impairment of the viewer; and

generating the modified content including the plurality of reproduced objects offset from one another along an axis by the offset amount;

render the modified image on a rear display; and

selectively activate a front barrier display to selectively direct light emitted from the rear display to control visibility of the modified content according at least in part to the visual parameter, selectively activate the front barrier display to selectively direct light emitted from the rear display to control visibility of the modified content comprising;

controlling one or more first areas of the front barrier display to direct a first portion of the light emitted from the rear display to the viewer using the visual parameter; and

controlling one or more second areas of the front barrier display to block a second portion of the light emitted from the rear display from visibility by the viewer using the visual parameter.

21. The system of claim 20, wherein the processing circuitry is configured to obtain the visual parameter by obtaining at least one of a parameter associated with the viewer'"'"'s eyesight, a focal length of an eye of the viewer, or a corrective lens prescription of the viewer.

22. The system of claim 20, wherein the visual parameter is based at least in part on a measure of distance between the viewer and the rear display.

23. The system of claim 20, wherein, the processing circuitry is further configured to selectively activate the front barrier display to prevent the passage of light emitted from the rear display in the direction of the viewer associated with certain portions of the modified content rendered on the rear display while allowing the passage of light emitted from the rear display in the direction of the viewer associated with other portions of the modified content rendered on the rear display according at least in part to the visual parameter.

24. The system of claim 23, wherein the processing circuitry is configured to selectively activate the front barrier display to render a dynamic pattern to mask at least a portion of the light emitted from the rear display.

25. The system of claim 20, wherein the processing circuitry is further configured to generate the modified content and selectively activate the front barrier display to control visibility of the modified content to account for visual impairment of the viewer.

26. The system of claim 20, wherein the processing circuitry is further configured to generate the modified content and selectively activate the front barrier display to control visibility of the modified content so that the modified content appears in focus to the viewer.

27. The system of claim 20, wherein the front barrier display is detachable with respect on the rear display, the detachable front barrier display communicating with the rear display wirelessly.

28. A method comprising:

obtaining a visual parameter associated with a degree of severity of a vision impairment of a viewer;

modifying display characteristics of at least of a region of an image according to the visual parameter to generate a modified image, the modified image including at least one image region comprising a plurality of reproduced objects, generating the modified image comprising;

determining an object within the received content to reproduce, wherein the object comprises a pixel or a group of pixels;

generating the plurality of reproduced objects based on the object;

determining an offset amount using the visual parameter, the offset amount varying in response to varying severity of the vision impairment of the viewer; and

generating the modified content including the plurality of reproduced objects offset from one another along an axis by the offset amount;

rendering the modified image on a rear display; and

controlling visibility of the modified image according at least in part to the visual parameter, controlling visibility of the modified image comprising;

controlling a front barrier display to cause a first set of one or more of the reproduced objects rendered on the rear display to be visible to the viewer using the visual parameter; and

controlling the front barrier display to block a second set of one or more of the reproduced objects rendered on the rear display from visibility to the viewer using the visual parameter.

29. The method of claim 28, wherein the visual parameter is based at least in part on at least one of a parameter associated with the viewer'"'"'s eyesight, a focal length value of an eye of the viewer, or a corrective lens prescription of the viewer.

30. The method of claim 28, further comprising receiving information selecting the region of the image to be modified.

31. The method of claim 28, wherein the image is at least a portion of video content.

32. The method of claim 28, wherein the visibility is controlled by selectively activating a barrier display that masks certain portions of light emitted from the rear display according at least in part to the visual parameter.

33. The method of claim 32, further comprising generating the modified image and selectively activating the barrier display to control visibility of the modified image so that the modified content appears in focus to the viewer.

34. The method of claim 32, further comprising operating the barrier display to mask the light emitted from the rear display by rendering a dynamic pattern.

35. The method of claim 34, further comprising operating the barrier display to render a dynamic pattern that oscillates between a first pattern and a second pattern.

36. The method of claim 28, wherein the plurality of reproduced objects comprise a plurality of reproduced pixels.

37. The method of claim 36, controlling visibility of the modified image comprising:

controlling the front barrier display to cause a first set of one or more of the reproduced pixels to be visible to the viewer, the first set of reproduced pixels having an angle of incidence on an eye of the viewer causing at least a portion of the modified image to appear in focus to the viewer; and

controlling the front barrier display to block a second set of one or more of the reproduced pixels from visibility to the viewer, the second set of reproduced pixels having an angle of incidence on the eye of the viewer causing the at least a portion of the modified image to appear out of focus to the viewer.