Vision corrective display

Patent metadata

Field	Value
Publication number	US-9406253-B2
Application number	US-201313931836-A
Country	US
Kind code	B2
Filing date	Jun 29, 2013
Priority date	Mar 14, 2013
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

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.

First claim

Therefore, at least the following is claimed:

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 modifie

Assignees

• Broadcom Corp

Inventors

• Blanche Bradley
• Szeto Raymond

Classifications

• H04N13/302

  for viewing without the aid of special glasses, i.e. using autostereoscopic displays · CPC title

• G09G3/20 Primary

  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 title

• G09G3/003

  to produce spatial visual effects · CPC title

• H04N13/0402

  Electricity · mapped topic