Vision corrective display

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.

TECHNICAL FIELD

The present disclosure relates generally to displaying an image on a display device and, more particularly but not exclusively, to a visually corrective display that modifies the display to account for vision impairments.

BACKGROUND

A person who does not have 20/20 vision often sees parts of the world out of focus. Some eye conditions associated with poor vision include myopia (near-sightedness), hyperopia (far-sightedness), astigmatism, diplopia and presbyopia. A non-surgical solution is to wear corrective lenses such as eye glasses or contact lenses. However, if the person does not wear corrective lenses, the problem of out of focus images remains.

DETAILED DESCRIPTION

The present disclosure relates to displaying an image on a display device such that the displayed image may be selected so as to possess certain visual characteristics. In one or more embodiments, display is referred to as a vision corrective display or a visually self-corrective display, such that the image displayed on the display may be modified to account for vision impairments. For example, the vision corrective display is able to modify the display of an image to account for different viewer focal points, thereby allowing the focus of the displayed image to be adjusted through operation of the display and allowing a viewer to perceive an image in focus without requiring wearable lenses (i.e., glasses or contact lenses). Through simple operation of the vision corrective display, blurriness of an image to a vision impaired viewer can be reduced or eliminated. According to various embodiments, vision correction may use a selective direction display.

According to various embodiments, a vision corrective display is provided through which an image is presented in a manner where the image may be adjusted so as to modify its appearance to a viewer. In one or more embodiments and as illustrated in connection withFIGS. 1A and 1B, operation of the vision corrective display10can be controlled such that the image being displayed appears to be more in focus to a vision impaired viewer. For example, the presented image on the display10can be adjusted to account for visual impairment of the viewer (e.g., to account for the eye prescription of the viewer). As shown inFIG. 1A, an image12abeing displayed on the vision corrective display10may be out of focus (or otherwise possess an undesirable appearance) to a viewer based on the visual impairment of the viewer. The viewer ofFIG. 1Ais vision impaired such that objects that are close to the viewer appear in focus while objects far away from the viewer appear out of focus. Thus, an input device13such as a remote control that is near the viewer may be in focus for the viewer, while the display10, the image12arendered on the display, and objects near the display (e.g., a display stand) appear out of focus.

Operation of the vision corrective display10can be controlled to adjust the displayed image12buntil it appears more in focus (or otherwise appears more desirable) for the viewer, as illustrated inFIG. 1B. According to the viewer's eyesight or visual preferences, the displayed image12bmay be adjusted or modified in a controlled manner to achieve a desired result (e.g., an in-focus image for the viewer). As shown inFIG. 1B, the display10may render an image12bthat appears to be more in focus for the viewer ofFIG. 1Ahaving impaired vision. However, objects near the image12b(e.g., a display stand) continue to be out of focus. According to various embodiments, the viewer may utilize an input device13to submit his or her visual preferences to the display10to render images12bthat are in focus.

AlthoughFIGS. 1A and 1Bdepict a non-limiting example of a display10configured to visually correct an image12bfor an eyesight impaired viewer, various embodiments are no so limited. For example, the display10may render an image12bin a manner that accounts for a viewer who is impaired with hyperopia (farsightedness), astigmatism, myopia (near-sightedness), diplopia, presbyopia or any other vision impairment.

In various embodiments, the vision corrective display10includes a rear display14and a front barrier display16, as illustrated in an exploded manner inFIG. 2. In various embodiments, an image to be displayed is rendered on the rear display14while the front barrier display16functions to control which portions of the image displayed on the rear display14are visible to the viewer. The front barrier display16provides an adjustable barrier layer that allows selected portions of the image displayed on the rear display14to be viewed by the viewer. In one or more embodiments, the image displayed on the rear display14and the front barrier display16are adjusted in conjunction with one another (e.g., on a frame-by-frame basis or on a certain clock or timing cycle) so that the image being viewed remains in a desired focus or other visual appearance over time (e.g., when the image is a video having changing images or characteristics over time).

In one or more embodiments, the functional operation of the vision corrective display10adjusts for visual impairments of a viewer, where an overview of some visual impairments and associated image adjustments performed by the vision corrective display10will now be described with reference toFIGS. 3A-3C and 4A-4C. With reference toFIG. 3A, shown is an optical diagram of light rays passing through portions of an eye100with correct vision. An object105is perceived by portions of an eye100. The object105may comprise any light source that radiates light rays102, where the object105may be, for example, a pixel rendered on a display. Light rays102emitted from the object105pass through a lens108of the eye100. After passing through the lens108, the light rays102converge toward a focal point110within the eye100. For an eye100with unimpaired vision, the focal point110where the light rays102converge falls on the retina111of the eye100. To this end, an object105that focuses on the retina111is perceived correctly with a reduced amount of blur.

Referring now toFIG. 3B, shown is an optical diagram of light rays102passing through portions of an eye100with slightly impaired vision. The non-limiting example ofFIG. 3Bdepicts an eye100with poor vision attributed to hyperopia. The object105is still perceived by portions of the eye100. However, after passing through the lens108, the light rays102do not converge at the retina111. Instead, the light rays102converge toward a focal point117located behind the retina111. In various cases, the light does not converge at the retina111as a result of vision disorders affecting the eye and/or the shape of the eye, such as the reduced ability for the lens108to focus light on the retina111. Since the light rays102corresponding to the object105received at the retina111do not converge at the retina111, the object105will be perceived by the viewer as being out of focus or blurry, instead of being perceived as a sharp or in focus image.

Referring further toFIG. 3C, shown is an optical diagram of light rays102passing through portions of an eye100with even greater impaired vision than the eye depicted inFIG. 3B. The object105inFIG. 3Chas a focal point121that falls farther behind the retina111than the focal point117that is depicted inFIG. 3B. Thus, the light rays102corresponding to the object105are even more spaced apart when received by the retina111in the eye100ofFIG. 3C, resulting in an even greater degree of blurriness or out of focus image of the object105than in the eye ofFIG. 3B.

In the context above, various embodiments of the present disclosure are directed to manipulating the manner in which the object105is presented on a vision corrected display10in order to modify the manner in which a viewer perceives the image so as to improve the focus of the object105and/or reduce the degree of blurriness perceived by a viewer's eye.

With reference toFIG. 4A, shown is an optical diagram of light rays102passing through portions of an eye100that requires vision correction. An object105positioned a distance201away from the eye100emits light rays102that pass through the lens108of the eye100, where the lens108focuses an image of the object105at a focal point205. The focal point205falls behind the retina111, thereby causing the object105to be out of focus to the viewer (e.g., represented by a blurred image213where the spaced apart light rays102are received by the retina111due to their convergence focal point205being located away from the retina111). In this respect, the object105appears to be less sharp, larger, and blurrier for a person with poor vision having eyesight corresponding toFIG. 4A.

With reference toFIG. 4B, shown is an optical diagram of light rays102passing through portions of the eye100ofFIG. 4Athat requires vision correction.FIG. 4Bprovides an example of where the object105should be positioned for a vision impaired viewer to correctly perceive the object105in focus (e.g., where the light rays102for the object105converge at a focal point215located on the retina111). The non-limiting example ofFIG. 4Bdepicts relocating an object105to achieve a focal point215that falls on the retina111of a viewer with poor vision. Specifically, for a person with poor vision who is not wearing corrective lenses, such as a person having the condition of hyperopia, the location of an object105should be moved from the original distance201further away from the viewer to a greater distance222to allow the visually impaired lens108of the eye100to focus the light rays102at a focal point215. In other words, the distance222indicates where the object105should be located in order for the vision impaired viewer to observe the object105in focus. If the object105is not moved away from the viewer, the object105appears out of focus because the light rays102are received in a non-focused region213of the retina111, as shown inFIG. 4A.

However, in the context of a display presenting images to a viewer (e.g., displaying images on a television display, computer display, hand held display, etc.), it may not be desirable or possible to adjust the location of the display screen with respect to the viewer in order to attempt to bring a displayed image into focus. Instead of physically moving the location of the display screen with respect to a viewer, in accordance with one or more embodiments of the present disclosure, the light rays corresponding to an object or image being viewed on the vision corrective display10can be controlled to manipulate how the light rays for the image are received and perceived by a viewer.

Referring now toFIG. 4C, shown is an optical diagram of light rays102passing through portions of the eye100ofFIGS. 4A and 4Bthat requires vision correction. Specifically, the non-limiting example ofFIG. 4Cdemonstrates how a vision corrective display10operating in accordance with the present disclosure positioned at a display location201could alter the presentation of a vision corrected object219at distance201from the viewer's eye100(corresponding to object105positioned at a distance222from the viewer's eye100) without requiring the vision impaired viewer to move the object105to a distance222. As shown inFIG. 4C, the vision corrective display10is configured to modify, adjust, distort and/or expand the presentation of object105to the vision corrected object219shown on the display screen (e.g., at a distance201). To this end, the display is configured to project the vision corrected object219in a manner that would place the vision corrected object219in correct focus at the display location201, such that it appears as an in-focus image of the object105without having to physically move object105to a distance222away from the viewer's eye.

Referring now toFIG. 5, shown is a block schematic illustration of an example of a vision corrective display303, according to various embodiments of the present disclosure. In one or more embodiments, the vision corrective display303may be described as being lensless in that it modifies the visual attributes of an image (e.g., brings an image into focus for a viewer) for a viewer without requiring a viewer to wear corrective lenses and/or without requiring a refractive lens on the display303itself that would refract light passing therethrough. In one or more embodiments, the vision corrective display includes a rear display318for displaying images and a barrier display321for selectively allowing light to pass there through or otherwise selectively allowing portions of the images displayed on the rear display318to be viewed by a viewer. In one or more embodiments, the rear display318and/or the barrier display321may comprise a liquid crystal display (LCD), a light emitting diode (LED) display, an organic-LED (OLED) display, a plasma screen or any other type of display screen or display device capable of displaying images. In various embodiments, the barrier display321operates in a manner that is similar to a parallax barrier layer by selectively directing light to a viewer. The barrier display321comprises a device for selectively creating a barrier to light passage between the rear display318and a viewer of the vision corrective display303so as to control the portions of the image(s) being displayed on the rear display318that can be viewed by a viewer of the vision corrective display303by blocking certain portions of light emitted from the rear display318from being seen by the viewer and by allowing other portions of light emitted from the rear display318to be seen by the viewer. In one or more embodiments, the barrier display321may be, for example, a barrier layer positioned to be in front of the rear display318with respect to the viewer. The vision corrective display303may, for example, correspond to the vision corrective display10illustrated inFIGS. 1 and 2.

According to various embodiments, the barrier display321may comprise a barrier layer that is removable or otherwise attachable/detachable to the rear display318or the vision corrective display303. A removable embodiment of the barrier display321may allow any current display device to be modified (e.g., retrofitted) with the barrier display to achieve a vision corrective display, where the current display device could function in accordance with the rear display318described herein. The removable barrier display may be an attachable LCD screen that is controlled in conjunction with rear display318. The removable barrier display may include one or more ports to allow for either wired or wireless connectivity with the rear display318and/or the processing circuitry334of vision corrective display303. For example, for wireless connectivity, the removable barrier display may connect to the other components via any known wireless protocol such as but not limited to WLAN (e.g., IEEE 802.11), Bluetooth, NFC or other wireless protocols. In various embodiments, rather communicatively coupling the removable barrier display to the rear display318, the removable barrier display and the rear display318can otherwise be synchronized to operate in concert with one another.

The vision corrective display303further comprises processing circuitry334. In various embodiments, the processing circuitry334is implemented to include at least a portion of a microprocessor. In various embodiments, the processing circuitry334may include one or more circuits, one or more processors, application specific integrated circuits, dedicated hardware, digital signal processors, microcomputers, central processing units, field programmable gate arrays, programmable logic devices, state machines, or any combination thereof. In various embodiments, processing circuitry334may include one or more software modules executable by or within one or more processing circuits. The processing circuitry334may further include memory350configured to store instructions and/or code that causes the processing circuitry334to execute the functionality of the vision corrective display303described herein.

In various embodiments, the processing circuitry334receives a video signal337for processing and rendering for display to a viewer. The video signal337may comprise an image, a video stream made up of a series of images, graphics, textual information or other content that may be displayed on the rear display318, referred to hereinafter as “display content.” The display content may comprise, for example, an image, a picture or any other collection of pixels.

The processing circuitry334further comprises a barrier controller342for controlling the display of the barrier display321, such as, for example, controlling the images or patterns being displayed on the barrier display321by blocking certain portions of light emitted from the rear display318from being seen by the viewer and by allowing other portions of light emitted from the rear display318to be seen by the viewer. The processing circuitry334comprises an image controller345for controlling images rendered by the rear display318. In one or more embodiments, the processing circuitry334also includes an image corrector348for modifying, changing or replacing images expressed in a video signal337(e.g., to account for vision correction or other modification of visual attributes). The image corrector348is configured to receive or obtain visual parameters352associated with certain desired display characteristics for the vision corrective display303. In one or more embodiments, the visual parameters352may comprise visual attributes for an image, a vision parameter for a viewer, a distance between the viewer and the vision corrective display303, information used to determine a visual parameter, or any other parameter used for modifying, changing or replacing the video signal337(e.g., to provide a desired vision correction for a viewer). In one or more embodiments, a visual parameter352may comprise, for example, a corrective lens prescription of the viewer (e.g., a diopter value, etc.), a focal length value of the viewer's eye, and optical power of the viewer's eye, etc. In one or more embodiments, the visual parameter352may be input by a viewer of the vision corrective display303through an input source or input device13(FIGS. 1A and 1B) (e.g., keyboard, keypad, touch screen, remote control, camera, image sensor for gesture control, microphone with voice recognition for voice control, etc.). In one or more embodiments, the visual parameter352may be sensed by the vision corrective display303, such as by using image and/or audio sensors to provide visual and/or audio recognition of a viewer to sense a viewer's location (e.g., distance, position, angle, etc.) with respect to the vision corrective display303or otherwise sense visual parameters of the viewer. The relative distance between the viewer and the vision corrective display303may be expressed in any units of distance that indicate how far away a viewer is from the vision corrective display303. In one or more embodiments, the vision corrective display303may sense certain conditions in its surrounding environment (e.g., brightness, glare) and adjust one or more visual parameter352accordingly. In one or more embodiments, the visual parameter352may be provided together with the content contained in the video signal337.

Next, a general description of the operation of the various components of the vision corrective display303is provided in accordance with one or more embodiments. The image corrector348and/or image controller345receive a video signal337that contains an image. The image corrector348and/or image controller345are configured to process the image based on visual parameters352and render it for display to a viewer, such that the rear display318and the barrier display321are controlled accordingly to modify the perception of the image to a viewer who has vision impairment so as to reduce or eliminate such impairment (e.g., bring the image into focus for the viewer). The image corrector348may also be configured to receive user input (e.g., as part of visual parameters352) to determine the extent of vision correction needed to correct the image for display to the viewer.

According to various embodiments, the processing circuitry334may generate a user interface to calculate the visual parameter352. For example, the user interface may perform an eye examination for identifying the severity of impaired vision of the viewer. For example, the eye examination may comprise controlling the rear display318and the barrier display321to present a series of images having different visual attributes (e.g., images associated with different viewer focal lengths that may range in blurriness to a viewer). The viewer may select the image containing the desired characteristics, such as the image that is perceived to be in focus the most to the viewer or the viewer may use an input source or input device13to adjust the visual attributes of the images until they possess desired characteristics. Each image may correspond to a respective visual parameter (e.g., a different corrective lens prescription). The selected image may then indicate a suitable visual parameter for the viewer, such that this visual parameter may be utilized by the image corrector348to control the rear display318and the barrier display321to adjust their displays, respectively, to associate all images with such visual parameter.

In performing image modification or correction, the image corrector348generates a signal to the image controller345for rendering a vision corrected image on the rear display318. The image corrector348modifies, shifts, expands or otherwise distorts a received image based on the visual parameters352. The distorted image is rendered on the rear display318via the image controller345. In one or more embodiments, the particular pixels to be illuminated and/or the attributes of the individual pixels in the rear display318associated with the image to be displayed are modified by the image corrector348in accordance with the desired operation of the vision corrective display303to allow the image to be viewed in focus by a viewer.

In various embodiments, the image corrector348generates a signal to the barrier controller342for controlling operation of the barrier display321to effectuate vision correction of the image. In various embodiments, the barrier display321may be in a substantially transparent state when images are not being displayed and operation of the barrier display321will be described as displaying a desired pattern on the barrier display321that functions to block certain portions of light emitted from the rear display318from being seen by the viewer and by allowing other portions of light emitted from the rear display318to be seen by the viewer, such that only certain portions of the image displayed on the rear display318can be seen by a viewer and these visible portions of the image contain the desired visual attributes for the viewer. While the image displayed on the barrier display321may be described as a desired pattern in various embodiments described herein, it is understood that the barrier display321may control the ability of a viewer to view certain portions of the rear display318. In one or more embodiments, the pattern displayed on the barrier display321may completely block the passage of light through certain regions of the barrier display321displaying the pattern while allowing light to pass through other regions of the barrier display321on which the pattern is not displayed. In one or more embodiments, the pattern displayed on the barrier display321may not completely block the passage of light through certain regions of the barrier display321displaying the pattern but may instead simply modify the characteristics of the light passing therethrough, so as to adjust the visually perceivable characteristics of the image being displayed on the rear display318(e.g., the barrier display321may serve as a type of light filter in certain situations).

In one or more embodiments, the image corrector348instructs the barrier controller342to render a dynamically changeable pattern on the barrier display321for selectively directing light that is emitted from the rear display318towards the viewer. In this manner, the images displayed on the rear display318and the patterns displayed on the barrier display321are coordinated by the barrier controller342, image corrector348and/or image controller345to work in conjunction with one another to create the desired visual effect for the viewer. In one or more embodiments, the image corrector348, barrier controller342and/or image controller345may be configured to adjust the altered image to be displayed on the rear display318and/or the dynamic pattern that is rendered by the barrier display321based on the visual parameters352and/or particular images present in the video signal337. In one or more embodiments, the image corrector348, the barrier controller342and the image controller345may comprise separate components, may comprise the same component, may combine some components or may have their operations divided among even additional components.

Referring next toFIG. 6A, shown is an optical diagram of light rays403emitted from a vision corrective display303ofFIG. 5observed by a viewer having impaired vision. In the non-limiting example ofFIG. 6A, the vision corrective display303is configured to create an in-focus corrected image for the viewer, which otherwise would be perceived by the viewer to be out of focus as a result of the viewer's impaired vision having a focal point406located behind the viewer's retina111for an image viewed a distance417from the viewer's eye. As a result, images rendered by this display without correction would appear to be out of focus and blurry to the viewer based on the viewer's vision impairment.

According to various embodiments, the vision corrective display303of the present disclosure is directed to account for the vision impairment of the viewer by causing images rendered by the vision corrective display303to converge at a focal point409located at the retina111, thereby causing the images to be perceived in-focus. Assuming that the viewer wishes to correctly perceive a hypothetical object412, the hypothetical object412would, for example, need to be displayed on a display303as if it were located at a position located behind the vision corrective display303to account for the particular viewer's vision impairment.

In view of the display distance417between the display303and the viewer's eye being different than the distance to the hypothetical object412needs to be positioned for make the hypothetical object412appear in focus to the viewer without corrective lenses, the vision corrective display303is configured to adjust the presentation of the hypothetical object412. That is, the vision corrective display303generates a vision corrected object415by modifying the hypothetical object412for display on the vision corrective display303to appear in focus to the viewer (e.g., modifying the hypothetical object412so that it is perceived in focus whereas simply displaying the hypothetical object412on the rear display318in an unmodified manner would appear out of focus due to the viewer's visual impairment). For example, the vision corrective display303modifies a presentation of the hypothetical object412by shifting, expanding, or otherwise distorting presentation of the hypothetical object412on the rear display318. Expanding may comprise, for example, taking a hypothetical object412to be displayed and reproducing the object412into one or more reproduced versions415of the object412as depicted inFIG. 6A. In one or more embodiments, the reproduced versions415may be shifted on the rear display318when displayed. In one or more embodiments, expanding may also comprising scaling the size of the hypothetical object412along one or more axes. In various embodiments, an image corrector348(FIG. 5) is operable to cause a modification, an expansion or distortion to render the vision corrected object(s)415.

In addition to generating a vision corrected object415, the vision corrective display303may be further configured to direct different portions of the vision corrected object415to the viewer at different points in time. To direct portions of the vision corrected object415, the vision corrective display303may comprise a rear display318and a barrier display321. The rear display318may comprise, for example, a Liquid Crystal Display (LCD), a gas plasma-based flat panel display, an organic light emitting diode (OLED) display, an LCD projector, or other type of display device for rendering images. Specifically, the rear display318may be configured to render the vision corrected object415.

The barrier display321may comprise, for example, an LCD), a gas plasma-based flat panel display, an organic light emitting diode (OLED) display, an LCD projector, or other type of display device for rendering images that may selectively block/transmit the passage of light originating from the rear display318. Thus, the barrier display321may selectively allow or prevent or alter the passage of light generated by the rear display318to control which portions of the vision corrected object415are received by the retina111. Through the use of the barrier display321and the rear display318, images rendered by the vision corrective display303arrive at a suitable focal point on the retina111of the vision impaired viewer.

In one or more embodiments, the vision corrective display303may use a barrier controller342(FIG. 5) to render patterns via the barrier display321and use an image controller345(FIG. 5) to render images via the rear display318.

Referring next toFIG. 6B, shown is a non-limiting example of an optical diagram of light rays433emitted from a vision corrective display303observed by a viewer having impaired vision who experiences a condition of hyperopia that is more extreme than the case depicted in the non-limiting example ofFIG. 6A. In this example, images normally rendered on a display at a distance417would focus at a focal point425even further behind the viewer's retina111. As a result, unmodified images rendered on a display at this distance would appear to be out of focus and blurry to the viewer without corrective lenses. Moreover, when compared to the non-limiting example ofFIG. 6A, the focal point425ofFIG. 6Bis further deviated from the retina111than the focal point406ofFIG. 6A. To account for this further deviation, a hypothetical object428would be required to be placed even further away from the viewer than that which is represented inFIG. 6Ain order for the viewer to view the unmodified hypothetical object428in focus.

Because the viewer inFIG. 6Bexperiences even greater impaired vision than the viewer ofFIG. 6A, in one or more embodiments the vision corrected object431should be distorted to a greater extent than that which is depicted inFIG. 6A(e.g., by selecting different pixels having a different location, spacing, pattern or characteristics to be illuminated in comparison toFIG. 6A). According to various embodiments, the vision corrected object431may comprise one or more reproduced versions431of the hypothetical object428that are offset from each other along a horizontal axis and/or vertical axis. The offset may be based on the severity of the impaired vision. Moreover, the number of reproduced versions may also depend at least upon the severity of the impaired vision. For example, the greater the severity in vision impairment, the greater the degree of expansion and the greater the number of reproduced versions to achieve the greater degree of expansion.

With reference toFIG. 7A, shown is an optical diagram of light rays481,483of multiple hypothetical objects503a,503brendered by a vision corrective display303in accordance with one or more embodiments as observed by a viewer who requires vision correction.FIG. 7Adepicts vision correction before light emitted from the vision corrective display303is selectively directed to the viewer at varying points in time. Specifically, the non-limiting example ofFIG. 7Adepicts a vision corrective display303that is configured to present multiple objects such as, for example, a first object506and a second object511.

In one or more embodiments, there may exist situations where, when multiple objects503a,503bto be displayed are modified to be displayed as vision corrected objects506and511on the vision corrective display303, it may be the case that multiple vision corrected objects506and511overlap with one another when presented on the rear display318of the vision corrective display303. If not accounted for, the resulting image516in the eye of the viewer could be blurry because the eye could be unable to separate and distinguish the overlapping multiple vision corrected objects506,511as separate objects503a,503b. In this respect, the edges may be blurred, particularly in the case when the vision corrected objects506,511are made up of different colors. To account for this, the vision corrective display303may be configured to selectively direct portions of the multiple vision corrected objects506,511to the viewer's eye so that they can be perceived separately, as is shown in one example inFIG. 7B.

With reference toFIG. 7B, shown is an optical diagram of light rays481,483of multiple objects506and511emitted from a vision corrective display303ofFIG. 5observed by a viewer who requires vision correction. In one or more implementations,FIG. 7Bdepicts vision correction after light emitted from the vision corrective display303is selectively directed to the viewer at varying points in time. For example, a barrier layer may be utilized for barrier display321(as shown inFIG. 5) to selectively direct light emitted by the vision corrective display303toward a viewer.

The non-limiting example ofFIG. 7Bdepicts multiple vision corrected objects506,511that are projected by a vision corrective display303at a display location544(i.e., rear display318). By selectively directing portions of the multiple vision corrected objects displayed on the rear display318at varying points in time, the light rays481,483received at the retina111of the vision impaired viewer such that the perceived image(s)519are perceived with reduced blurriness with relatively distinct edges.

With reference toFIGS. 8A and 8B, shown is an optical diagram of light rays481,483emitted from multiple objects rendered on a vision corrective display303ofFIG. 5in accordance with one or more embodiments in which the vision corrective display303modifies the displayed objects to account for a viewer who requires vision correction. Specifically, the non-limiting examples ofFIGS. 8A and 8Bdepict the use of a barrier display321to selectively direct portions of light481,483emitted by a rear display318toward a viewer, such as by selectively blocking certain portions of light emitted from the rear display318from being seen by the viewer while allowing other portions of light emitted from the rear display318to be seen by the viewer at varying points in time. The resulting image524,526perceived by a viewer is visually corrected (e.g., possesses reduced or eliminated blurriness) because the light rays481,483selected to be directed to the viewer converge at the viewer's retina111.

FIG. 8Adepicts a first barrier configuration500for displaying objects on the vision corrective display303andFIG. 8Bdepicts a second barrier configuration501for displaying objects on the vision corrective display303. In one or more embodiments, the first and second barrier configurations500,501may represent different respective versions of the same image or content to be displayed, where the first barrier configuration500may be configured to direct light481a-ctoward a viewer based on a first visual setting (e.g., a certain focal setting or eyesight configuration) while the second barrier configuration501may be configured to direct light483a-ctoward a viewer based on a second visual setting (e.g., a different focal setting or eyesight configuration).

In one or more embodiments, the rear display318and the barrier display321are controlled to operate in concert with one another according to the configuration of the vision corrective display303. For example, for the same underlying content to be displayed, the rear display318and the barrier display321may be configured to operate in a first manner to display the content (e.g., first barrier configuration500ofFIG. 8A) and/or may be configured to operate in a different manner to display the same content (e.g., second barrier configuration501ofFIG. 8B). In one or more embodiments, the vision corrective display303is configured to selectively render objects on certain portions of the rear display318while selectively activating corresponding portions of the barrier display321to either block the passage of light481,483or allow the passage of light481,483, so as to control which light rays481,483are directed to the viewer. In the examples illustrated inFIGS. 8A and 8B, two different vision corrected objects506and511may be presented on the rear display318such that different respective areas of the barrier display321may be activated to allow a viewer to view one vision corrected object506or another vision corrected object511, according to configurations of the vision corrective display303.

In one or more embodiments, the first vision corrected object506may be generated by modifying the display characteristics of an object or content to be displayed, such as by shifting the location of the object on the rear display318in any direction (i.e., vertical, horizontal and/or both), expanding or reducing the size of the object, modifying the location or locations where the object is to be displayed, distorting the object, etc. To this end, the first vision corrected object506may comprise multiple reproduced images506a-cthat are offset with respect to one another. The multiple reproduced images506a-cmay be intended to be perceived individually or, alternatively, may be intended to be perceived by a viewer in combination to perceive the image506. Similarly, the second vision corrected object511may also be generated in a similar manner to image506, such that the second vision corrected object511may comprise multiple reproduced images511a-cthat are offset with respect to one another on the rear display318. Different respective portions of the barrier display321may then be activated in a corresponding manner based on the first and second barrier configurations500,501to either allow light rays481a-cassociated with multiple reproduced images506a-cto converge on the retina111of a viewer to perceive a first vision corrected object506or to allow light rays483a-cassociated with multiple reproduced images511a-cto converge on the retina111of a viewer at526to perceive a second vision corrected object511.

In one or more embodiments, the first and second barrier configurations500,501may represent images to be displayed at respective first and second points in time (i.e., different images or content having different intended focal points). The barrier pattern selectively created by the barrier display321may oscillate or cycle between the first barrier configuration500and the second barrier configuration501according to a clock. The first point in time may correspond to a first clock cycle and the second point in time may correspond to a second clock cycle. In various embodiments of the present disclosure, a clock oscillates between even clock cycles and odd clock cycles such that the first barrier configuration500is used on even clock cycles while the second barrier configuration501is used on the odd clock cycles. To this end, light that is emitted by the rear display318passes through the barrier display321at a rate that is based on the clock cycle frequency. The clock cycle frequency may be set to be greater than the fastest frame rate that a human eye may perceive.

In one or more embodiments, such adjustment and control of the barrier display321may be performed to direct respective light rays to the left and right eyes of the viewer in alternate clock cycles. By selectively directing different light (e.g., images or content to be perceived) to different eyes of the viewer, the vision corrective display303can be configured to account for different visual impairments that may exist between the viewer's left and right eyes. For example, it is common for a person to have a dominant eye or to have eye disorders or impairments that manifest differently between a person's left and right eyes. By selectively directing left eye images to a viewer's left eye and right eye images to a viewer's right eye during different clock cycles, the vision corrective display303is able to account for individual left and right eye impairments of a viewer. Furthermore, in one or more embodiments, the vision corrective display303may selectively direct left eye images to a viewer's left eye and right eye images to a viewer's right eye during different clock cycles so as to create a stereoscopic or 3D effect, without requiring a viewer to even wear stereoscopic or 3D glasses. Conventionally, stereoscopic or 3D glasses (e.g., those with active shutters or passive filters) have been required in order to avoid crosstalk between the viewer's two eyes and prevent left eye images from being seen by a viewer's right eye and right eye images from being seen by a viewer's left eye. In accordance with various embodiments, the selective control and direction of images by the vision corrective display303can avoid this crosstalk between a viewer's eyes by precisely controlling the light (and respective images) sent to each of the viewer's right and left eyes. In one or more embodiments, left and right eye content can be presented simultaneously on the vision corrective display303(through precise light direction) or may presented in alternating clock cycles.

In one or more embodiments, in order to control the particular content displayed on the rear display318that is directed to a viewer's eyes, the barrier display321may render a dynamic pattern that changes based on particular configurations of the vision corrective display303. For example, the barrier configuration500,501may comprise a geometric shape or pattern (e.g., stripes, checkerboard pattern) or other non-uniform configurations that are made of different types of regions on the barrier display321: opaque regions, transparent regions and/or semi-opaque or semi-transparent regions. Each region in the barrier configuration may be made up of one pixel or a block of multiple pixels in any size array, depending upon the particular desired barrier to be created. In alternative embodiments, the regions of the barrier configuration may be configured to a honeycomb shape, circle, oval, polygon, or any other geometric shape that is capable of being displayed on the barrier display321. In this respect, each geometric shape possesses either opaque or transparent characteristics.

In one or more embodiments, the first barrier configuration500may comprise a first barrier pattern to be displayed on the barrier display321while the second barrier configuration501comprises a second barrier pattern to be displayed on the barrier display321with respect to the first barrier configuration500. In one or more embodiments, the second barrier pattern may be an inverse of the first barrier pattern. For example, if the first barrier configuration500is a checkerboard pattern, then the second barrier configuration501may be an inverse checkerboard pattern. To this end, a square represented in the barrier display321oscillates between opacity and transparency according to a clock frequency. By using a dynamic pattern that oscillates between a first barrier configuration500and a second barrier configuration501, in some embodiments the image received by the retina111is made up of two separated images rather than a single blended image, thereby providing the eye with an image that has an improved resolution.

In the first barrier configuration500, the barrier display321permits portions of the first vision corrected object506to reach the viewer's retina111while blocking portions of the second vision corrected object511from reaching the viewer's retina111. At another point time, the barrier display321is configured to the second barrier configuration501to permit portions of the second vision corrected object511to reach the viewer's retina111while blocking portions of the first vision corrected object506from reaching the viewer's retina111. In one or more embodiments, by switching the configuration of the barrier display321back and forth between the first barrier configuration500and the second barrier configuration501, the viewer perceives two separated images that correspond to the first vision corrected object506and the second vision corrected object511, respectively.

While various embodiments described herein describe first and second barrier configurations500,501for ease of illustration of representative examples, it is understood that any number of barrier configurations may be variably generated in correspondence with the particular content being displayed on the rear display318at any given time.

Turning now toFIG. 9A, shown is a drawing of an example of an object703rendered on a rear display318ofFIG. 5before the object703is subjected to vision correction. The rear display318includes a matrix of rows (e.g., rows0-5) and columns (e.g., columns A-K) that make up a matrix of display cells (e.g., A0, A1, A2. . . K5, etc.). For example, each display cell may be a pixel in the rear display318, where an object703may be rendered on the rear display318using any number of pixels. For a viewer without impaired vision, no vision correction is needed. Thus, the viewer accurately perceives the object inFIG. 9Aas it is rendered on the rear display318. The object703of the example ofFIG. 9Ais rendered using the pixels E1, E2, E3, F1, F2, and F3.

Referring now toFIG. 9B, shown is a drawing of an example of the object703ofFIG. 9Arendered on a rear display318ofFIG. 5after the object703is subjected to one possible modification to account for vision correction. If a viewer has impaired vision, then the object703rendered by the rear display318is subjected to vision correction. The particular modification of the display of the object703will be selected based on the type and/or degree of vision correction that is required for a particular viewer, such as being based on a visual parameter such as an eye power of the viewer or any other vision prescription metric. By applying an appropriate vision correction to the object703(e.g., based on visual parameters352), the object703may be displayed in a different manner on the rear display318. In various embodiments, the object703is reproduced to generate reproduced versions707(e.g.,707a,707b,707c) of the object703at selected locations on the rear display318. The reproduced versions707a,707b,707care displayed at different locations with respect to one another, where the different locations may be selected based on the visual parameters352. In some embodiments, the reproduced versions707a,707b,707cmay be offset with respect to one another in any direction, where the offset amount may be based on the visual parameters352. For example, a viewer with poor vision may require a relatively small offset while viewers with very poor vision may require a relatively greater offset. To this end, reproduced versions707of the original object703effectively provide different locations on the rear display318to display the original object703such that the vision corrective display303allows a viewer to view and perceive the original object703with appropriate vision correct (e.g., a viewer can view the original object703in focus when displayed in a different manner on the rear display318with light direction functionality provided by the barrier display321).

Although the non-limiting example ofFIG. 9Bdepicts expanding an object along the horizontal axis, various embodiments of the present disclosure are directed to expanding an object in the horizontal axis as well as the vertical axis or a combination of both axes. Moreover, the display of the expanded object707may occur over the course of multiple display cycles. That is to say, the reproduced versions707a,707b,707cmay be displayed at varying points in time.

Referring now toFIG. 9C, shown is a drawing of an example of the object ofFIG. 9Arendered on a rear display318ofFIG. 5after the object is subjected to vision correction. Specifically,FIG. 9Cdemonstrates an example of expanding the object ofFIG. 9Aby scaling the size of the object to generate a scaled object711. The object may be scaled to enlarge or reduce the size of the original object703along the horizontal and/or vertical axes. In the example ofFIG. 9C, the scaled object711has been expanded to occupy a greater number of display cells or pixels than the original object703.

Furthermore, the scaling of an object for vision correction may be made based on the visual parameters352, including but not limited to cylindrical curvature of the viewer's eye. For example, the scaling along the horizontal axis may differ from the scaling along the vertical axis in order to account for different vision impairments that affect different viewers (e.g., differing cylinder values of different viewers' eyes).

Referring now toFIG. 10A, shown is a drawing of an example of two objects812and815rendered on a rear display318ofFIG. 5before the objects are subjected to vision correction. The rear display318includes a matrix of rows (e.g., rows0-5) and columns (e.g., columns A-J) that make up a matrix of display cells (e.g., A0, A1, A2. . . J5, etc.). It is understood that the particular number of rows and columns (i.e., resolution) that make up the matrix of display cells may vary based on the particular displays being utilized in the vision corrective display (e.g., being used for the rear display318and/or the barrier display321). An object may be rendered on the rear display318using any number of pixels. For a viewer without impaired vision, no vision correction is needed. Thus, the viewer accurately perceives the object inFIG. 10Aas it is rendered on the rear display318.FIG. 10Aprovides an example of displaying a first object812and a second object815.

Referring now toFIG. 10B, shown is a drawing of an example of the first object812(FIG. 10A) and second object815(FIG. 10A) rendered on a rear display318ofFIG. 5. According to various embodiments, the rear display318may comprise a high resolution display such as, for example, an Ultra HD display (i.e.,4K×2K), an8K×bK display or any high resolution display. A high resolution display may be any display that has a pixel density that is greater than a display with lower resolution. For example, a4K×2K display has approximately four times higher resolution than a conventional HD quality display (i.e., 1920×1080 pixels) by doubling the number of pixels in each direction, and an8K×4K display has approximately sixteen times higher resolution than a conventional HD quality display. As display technologies advance, higher and higher resolutions will continue to be achievable. These higher resolutions provide flexibility in modifying the objects or content to be displayed through the use of all of the available pixels in the higher resolution, while still being able to display objects or content with sufficient resolution that the objects or content are perceived as being a desired level of satisfaction. For example, a4K×2K display has sufficient resolution to display four conventional HD quality images on the same screen, such that HD quality or better resolution can still be achieved on a higher resolution display in accordance with various embodiments described herein where original objects or content are modified, reproduced or expanded when being displayed on the rear display318.

For example, this higher resolution display may allow a single pixel from the display ofFIG. 10Ato be mapped for display in multiple pixels, as illustrated inFIG. 10B. For example,FIG. 10Bhas doubled the number of available pixels in both of the vertical and horizontal axes. In the example ofFIG. 10B, a first mapped object818corresponds to the first object812and second mapped object821corresponds to the second object815.

According to various embodiments, a vision corrective display303(FIG. 5) may leverage the high resolution properties of a high-resolution display to modify an object for generating a corresponding vision corrected object. As shown in the non-limiting example ofFIG. 10B, the pixel of C1inFIG. 10Ais mapped to one or more of the pixels C10, c10, C11, and c11ofFIG. 10B. Each pixel ofFIG. 108Acorresponds to a set of four sub pixels in the higher resolution display ofFIG. 10B. However, only a portion of the sub pixels may be used. After mapping the object to a higher resolution display, the vision corrective display303modifies the object reproducing and shifting each reproduced object by an offset amount, where the offset amount may depend on the optical power of the viewer's eye. This is discussed in further detail with respect to at leastFIG. 100.

Referring next toFIG. 100, shown is a drawing of an example of modifying the mapped objects818,821ofFIG. 10B. The mapped objects may be reproduced to generate reproduced objects. As shown in the non-limiting exampleFIG. 100, a mapped object is reproduced four times to generate four reproduced objects. Each reproduced object may be shifted by an offset amount that is based on a visual parameter such as, for example, the optical power of the viewer. In the non-limiting example ofFIG. 100, a first reproduced object825ais shifted horizontally to the right by five pixels, a second reproduced object825bis shifted vertically down by five pixels, a third reproduced object825cis shifted horizontally to the right by five pixels and vertically down by five pixels, and a fourth reproduced object825dis not shifted.

The non-limiting examples ofFIGS. 10B-Cprovide one among many schemes to expand an object vertically and horizontally. Specifically,FIGS. 10B-Cdemonstrate a scheme for reproducing particular pixels and shifting the reproduced pixels to achieve an effect of expanding an object in the rear display318. Other examples of expanding an object to generate a vision corrected object include scaling the object along a vector. In this example, a group of pixels are expanded by a scale factor and extended along a horizontal and/or vertical axis. The scale factor may depend on the visual parameter.

As discussed above, an object812(FIG. 10A) may be mapped from a lower resolution display to a higher resolution display to generate a mapped object818(FIG. 10B). The mapped object818may be modified by being reproduced, shifted, scaled, and/or scattered to generate one or more reproduced objects825. Through this process of rendering a vision corrected object in a rear display318, it may be the case that the higher resolution properties of a high resolution display are sacrificed to achieve a rendering of sharper (e.g., more in-focus) objects for a viewer with impaired vision.

Referring next toFIG. 11, shown is a flowchart that provides one example of the operation of a portion of the logic executed by the processing circuitry334, according to various embodiments. It is understood that the flowchart ofFIG. 11provides merely an example of the many different types of functional arrangements that may be employed to implement the operation of the portion of the logic executed by the processing circuitry334as described herein. As an alternative, the flowchart ofFIG. 11may be viewed as depicting an example of steps of a method implemented in the processing circuitry334according to one or more embodiments.

The processing circuitry334receives an image (906). The image may be a static picture in a video signal337(FIG. 5). Furthermore, the image may be formatted as raw pixel data. The processing circuitry334expands a region in the image to generate a modified region (909). An image controller345(FIG. 5) of the processing circuitry334may modify the image or a portion of the image to cause a rendering of a modified image on a rear display318(FIG. 5). The processing circuitry334may modify the image such that the image appears to be more in focus for a viewer with impaired vision. Furthermore, the processing circuitry334modifies the image according to the visual parameter352.

In various embodiments of the present disclosure, a viewer selects a portion of the display for identifying a region that is subject to vision correction. The region may be, for example, a lower portion of the display where subtitles are likely to be presented. Alternatively, the processing circuitry334may be configured to automatically identify regions for vision correction based on content that is to be displayed in those regions. Alternatively, the processing circuitry334may be configured to perform vision correction based the type of content that is to be displayed. For example, the processing circuitry334may be configured to identify content or regions of the image that include text, such that vision correction is applied to the textual information (e.g., program guides that are displayed to a viewer, subtitles, or other text to be displayed). In various embodiments, a region of an image for vision correction may comprise a macro block, a sub macro block, a slice, or any other division of a picture to be displayed. For example, a particular object in an image may be modified (e.g., brought into focus) separately or differently than the remaining content in the image so as to highlight or emphasize the particular object, such as for use in advertising or otherwise.

Once the content of an image, object and/or region is determined, the content is modified to generate a modified region. In various embodiments, pixels in the content to be modified are reproduced to generate reproduced pixels and the reproduced pixels are offset from one another to cause an expansion or other modification of the content. The content may also be modified by performing a scaling operation on pixels of the content. The content is expanded or modified to generate a modified region based on the visual parameter352. The severity of the user's vision impairment may correlate to the degree of modification of the content. The modified content is rendered on the rear display318.

The processing circuitry334directs a first portion of the modified content to the viewer (912). The processing circuitry334may direct the first portion of the modified content by masking the modified content using a barrier display321(FIG. 5). The processing circuitry334may then direct a second portion of the modified content to the viewer (915). A barrier display321may adjust its configuration according to a dynamic pattern to cause display of the second portion of the modified content. In this respect, the barrier display321may use a dynamically changing mask for selectively directing portions of the modified content at varying points in time. In this respect, the first portion may be directed to the viewer for a first period of time and the second portion may be directed to the viewer for a second period of time. As another example, the first portion may be directed to the viewer's left eye while the second portion is directed to the viewer's right eye. According to various embodiments, the barrier display321oscillates between two or more patterns to selectively direct the light emitted from the rear display318towards the viewer. The resulting image in the viewer's eye corresponds to focal point that is at or near the retina111(FIG. 1) of the viewer. To this end, images rendered by the vision corrective display303have increased sharpness and/or reduced blurriness based on the viewer's vision impairment.

A barrier display321may be configured to selectively direct the light emitted from the rear display318by rendering dynamic patterns that mask portions of the rear display318. In an alternative embodiment, the pixels of the rear display318may include light steering or beam steering functionality to direct the light emitted from the pixels of the rear display318in particular directions. In this alternative embodiment, individual pixels that make up modified vision corrected content may be controlled to selectively direct their emitted light toward a viewer using light steering/beam steering functionality in order to control the particular light rays that are received by the viewer's eyes. In such an alternative embodiment, the beam steering pixels of the rear display318can be used in place of the barrier display321to direct light to viewer.

The flowchart ofFIG. 11show the functionality and operation of an implementation of portions of the processing circuitry334implemented in a vision corrective display303(FIG. 5). If embodied in software, each reference number, represented as a block, may represent a module, segment, or portion of code that comprises program instructions to implement the specified logical function(s). The program instructions may be embodied in the form of source code that comprises human-readable statements written in a programming language or machine code that comprises numerical instructions recognizable by a suitable execution system such as a processor in a computer system or other system. The machine code may be converted from the source code, etc. If embodied in hardware, each block may represent a circuit or a number of interconnected circuits to implement the specified logical function(s).

Although the flowchart ofFIG. 11shows a specific order of execution, it is understood that the order of execution may differ from that which is depicted. For example, the order of execution of two or more blocks may be scrambled relative to the order shown.

Also, two or more blocks shown in succession inFIG. 11and/or other procedures or flowcharts described herein may be executed concurrently or with partial concurrence. Further, in some embodiments, one or more of the blocks shown inFIG. 11may be skipped or omitted. In addition, any number of counters, state variables, warning semaphores, or messages might be added to the logical flow described herein, for purposes of enhanced utility, accounting, performance measurement, or providing troubleshooting aids, etc. It is understood that all such variations are within the scope of the present disclosure.

With reference toFIGS. 12A-12C, shown is a non-limiting example of a viewer who configures a vision corrective display303to view an object1203rendered on the vision corrective display at varying distances. InFIG. 12A, the viewer views an object1203arendered on the vision corrective display303at a particular distance1201. At this distance1201, the viewer's eye100is positioned a distance away from the vision corrective display303such that the viewer may accurately view content on the vision corrective display303without the vision corrective display303providing vision correction. In this respect, the object1203ais rendered on a rear display318without modification, such that no compensation for the viewer's vision is required in order for the viewer to view the object1203ain a desired manner (e.g., viewing the object1203ain focus). Furthermore, the barrier display321may be configured to permit the light radiating from the rear display318to pass to the viewer without blocking, filtering, masking or selectively directing the light to the viewer's eye100. Thus, the barrier display321may be operated to be in an effectively transparent state.

If the viewer moves closer to the vision corrective display303, the object1203amay become out of focus as a result of the viewer's vision impairment and inability to focus at this closer distance1209. According to various embodiments, the vision corrective display303may be configured to adjust the rendering of the object1203ato account for the change in distance. As shown inFIG. 12B, the viewer may move closer to the vision corrective display303at a distance1209that is less than the distance1201ofFIG. 12A. Without vision correction, the objects may appear out of focus at this distance1209ofFIG. 12B. By applying vision correction, objects at this distance1209are modified to appear in focus to the farsighted viewer.

For example, the rear display318may render an object1203bsuch that the object1203bis a modified version of the object1203aofFIG. 12A. Specifically, the rear display318may expand, reproduce, shift, or otherwise modify the object1203aofFIG. 12Ato product the object1203bofFIG. 12Bby accounting for the distance1209of the viewer. Thus, the degree of modification is based on the distance1209and/or based on any other visual parameter352, such as the vision prescription of the viewer.

Furthermore, the barrier display321may be selectively activated (e.g., to render a pattern1206b) that causes portions of the rear display318to be selectively directed to the eye100of the viewer. The pattern1206bmay block portions of light radiating from the rear display318to allow the viewer to view the object1203bin a manner that is relatively in focus or to otherwise contain desired visual characteristics.

With reference toFIG. 12C, the viewer may move even closer to the vision corrective display303at a distance1212that is shorter than the distance1209ofFIG. 12B. While some vision correction may be needed for the viewer at a distance1209depicted inFIG. 12B, a greater degree of vision correction may be needed at the distance1212depicted inFIG. 12C. Thus, the object1203aofFIG. 12Amay be modified by the rear display318to a different degree to render the object1203cofFIG. 12C. To this end, the degree of scaling, expanding, modifying, reproducing, or offsetting of the object1203cis different in the example ofFIG. 12Cthan in the exampleFIG. 12Bbecause of the change of distance. Moreover, the pattern1206crendered by the barrier display321may be different than the pattern1206bofFIG. 12B. For example, the granularity or rate of change of the pattern1206cmay be adjusted when moving from one distance1209to a closer distance1212.

While the non-limited examples ofFIGS. 12A-Care described in connection with a viewer moving closer to a vision corrective display303, it is understood that operation of the vision corrective display303can similarly be adjusted to account for any change in location of a viewer with respect to the vision corrective display303.

With reference toFIG. 13, shown is a schematic block diagram of portions of the processing circuitry334according to an embodiment of the present disclosure. The processing circuitry334includes at least one processor circuit, for example, having a processor1303and a memory1306, both of which are coupled to a local interface1309. The local interface1309may comprise, for example, a data bus with an accompanying address/control bus or other bus structure as can be appreciated.

Stored in the memory1306are both data and several components that are executable by the processor1303. In particular, stored in the memory1306and executable by the processor1303are the image controller345, image corrector348, barrier controller342, and potentially other applications. In this respect, the memory1306may comprise the memory350ofFIG. 5. In addition, the memory1306may comprise storage that stores data or files, system memory that allows for random access of data, and read only memory (ROM).

It is understood that there may be other applications that are stored in the memory1306and are executable by the processors1303as can be appreciated. Where any component discussed herein is implemented in the form of software, any one of a number of programming languages may be employed such as, for example, C, C++, C#, Objective C, Java, Javascript, Perl, PHP, Visual Basic, Python, Ruby, Delphi, Flash, or other programming languages.

A number of software components are stored in the memory1306and are executable by the processor1303. In this respect, the term “executable” means a program file that is in a form that can ultimately be run by the processor1303. Examples of executable programs may be, for example, a compiled program that can be translated into machine code in a format that can be loaded into a random access portion of the memory1306and run by the processor1303, source code that may be expressed in proper format such as object code that is capable of being loaded into a random access portion of the memory1306and executed by the processor1303, or source code that may be interpreted by another executable program to generate instructions in a random access portion of the memory1306to be executed by the processor1303, etc. An executable program may be stored in any portion or component of the memory1306including, for example, random access memory (RAM), read-only memory (ROM), hard drive, solid-state drive, USB flash drive, memory card, optical disc such as compact disc (CD) or digital versatile disc (DVD), floppy disk, magnetic tape, or other memory components.

Also, the processor1303may represent multiple processors1303and the memory1306may represent multiple memories1306that operate in parallel processing circuits, respectively. In such a case, the local interface1309may be an appropriate network that facilitates communication between any two of the multiple processors1303, between any processor1303and any of the memories1306, or between any two of the memories1306, etc. The local interface1309may comprise additional systems designed to coordinate this communication, including, for example, performing load balancing. The processor1303may be of electrical or of some other available construction.

The processing circuitry334may further include an output device interface1312to communicate with one or more output devices such as, for example, a rear display318, a barrier display321, or any other output device. The output device may implement one or more communication protocols to facilitate communication between the various components of the processing circuitry334and the various output devices.

The processing circuitry334may further include an input device interface1315to communicate with one or more input devices13such as, for example, one or more motion sensors, user input devices13, a video signal generator, or any other input device. The user input devices13may include a touch screen portion of the vision corrective display303, a keyboard, a mouse, a remote control, or any other user device that allows a user to make selections via a user interface. The video input generator may be any device that generates a video signal337or that provides a video stream. The input device interface may implement one or more communication protocols to facilitate communication between the various components of the processing circuitry334and the various input devices13.