ADAPTABLE PARALLAX BARRIER SUPPORTING MIXED 2D AND STEREOSCOPIC 3D DISPLAY REGIONS
A display system is provided that enables two-dimensional and three-dimensional images to be displayed. The display system includes a pixel array and a parallax barrier, and may include backlighting. The parallax barrier includes a plurality of barrier elements arranged in a barrier element array. Each barrier element is configured to be selectively opaque or transparent. The barrier element array is configured to filter light from the pixel array to form a plurality of images in a viewing space. Pairs of the images may be perceived by viewers in the viewing space as three-dimensional. Different regions of the barrier element array may be configured to filter light from the pixel array in different ways to form corresponding different images in the viewing space, including simultaneously delivering one or more two-dimensional views and/or three-dimensional views to viewers in the viewing space.
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This application claims the benefit of U.S. Provisional Application No. 61/291,818, filed on Dec. 31, 2009, which is incorporated by reference herein in its entirety; and
This application claims the benefit of U.S. Provisional Application No. 61/303,119, filed on Feb. 10, 2010, which is incorporated by reference herein in its entirety.
BACKGROUND OF THE INVENTION1. Field of the Invention
The present invention relates to three-dimensional image displays.
2. Background Art
Images may be generated for display in various forms. For instance, television (TV) is a widely used telecommunication medium for transmitting and displaying images in monochromatic (“black and white”) or color form. Conventionally, images are provided in analog form and are displayed by display devices in two-dimensions. More recently, images are being provided in digital form for display in two-dimensions on display devices having improved resolution (e.g., “high definition” or “HD”). Even more recently, images capable of being displayed in three-dimensions are being generated.
Conventional displays may use a variety of techniques to achieve three-dimensional image viewing functionality. For example, various types of glasses have been developed that may be worn by users to view three-dimensional images displayed by a conventional display. Examples of such glasses include glasses that utilize color filters or polarized filters. In each case, the lenses of the glasses pass two-dimensional images of differing perspective to the user's left and right eyes. The images are combined in the visual center of the brain of the user to be perceived as a three-dimensional image. In another example, synchronized left eye, right eye LCD (liquid crystal display) shutter glasses may be used with conventional two-dimensional displays to create a three-dimensional viewing illusion. In still another example, LCD display glasses are being used to display three-dimensional images to a user. The lenses of the LCD display glasses include corresponding displays that provide images of differing perspective to the user's eyes, to be perceived by the user as three-dimensional.
Problems exist with such techniques for viewing three-dimensional images. For instance, persons that use such displays and systems to view three-dimensional images may suffer from headaches, eyestrain, and/or nausea after long exposure. Furthermore, some content, such as two-dimensional text, may be more difficult to read and interpret when displayed three-dimensionally. To address these problems, some manufacturers have created display devices that may be toggled between three-dimensional viewing and two-dimensional viewing. A display device of this type may be switched to a three-dimensional mode for viewing of three-dimensional images, and may be switched to a two-dimensional mode for viewing of two-dimensional images (and/or to provide a respite from the viewing of three-dimensional images).
A parallax barrier is another example of a device that enables images to be displayed in three-dimensions. A parallax barrier includes of a layer of material with a series of precision slits. The parallax barrier is placed proximal to a display so that a user's eyes each see a different set of pixels to create a sense of depth through parallax. A disadvantage of parallax barriers is that the viewer must be positioned in a well-defined location in order to experience the three-dimensional effect. If the viewer moves his/her eyes away from this “sweet spot,” image flipping and/or exacerbation of the eyestrain, headaches and nausea that may be associated with prolonged three-dimensional image viewing may result. Conventional three-dimensional displays that utilize parallax barriers are also constrained in that the displays must be entirely in a two-dimensional image mode or a three-dimensional image mode at any time.
BRIEF SUMMARY OF THE INVENTIONMethods, systems, and apparatuses are described for displays having adaptable parallax barriers substantially as shown in and/or described herein in connection with at least one of the figures, as set forth more completely in the claims.
The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate the present invention and, together with the description, further serve to explain the principles of the invention and to enable a person skilled in the pertinent art to make and use the invention.
The present invention will now be described with reference to the accompanying drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Additionally, the left-most digit(s) of a reference number identifies the drawing in which the reference number first appears.
DETAILED DESCRIPTION OF THE INVENTION I. IntroductionThe present specification discloses one or more embodiments that incorporate the features of the invention. The disclosed embodiment(s) merely exemplify the invention. The scope of the invention is not limited to the disclosed embodiment(s). The invention is defined by the claims appended hereto.
References in the specification to “one embodiment,” “an embodiment,” “an example embodiment,” etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
Furthermore, it should be understood that spatial descriptions (e.g., “above,” “below,” “up,” “left,” “right,” “down,” “top,” “bottom,” “vertical,” “horizontal,” etc.) used herein are for purposes of illustration only, and that practical implementations of the structures described herein can be spatially arranged in any orientation or manner.
II. Example EmbodimentsEmbodiments of the present invention relate to display devices that include a parallax barrier that may be dynamically modified, thereby changing the manner in which images are delivered to the eyes of one or more viewers. The parallax barrier may be configured to enable the adaptive display of multiple types of images to users. For instance, embodiments enable the adaptive accommodation of a changing viewer sweet spot, switching between two-dimensional (2D), stereoscopic three-dimensional (3D), and multi-view 3D images, as well as the simultaneous display of 2D, stereoscopic 3D, and multi-view 3D images. Example features of the parallax barrier that may be dynamically modified include one or more of a number of slits in the parallax barrier, the dimensions of each slit, the spacing between the slits, and the orientation of the slits. Slits of the parallax barrier may also be turned on or off in relation to certain regions of the screen such that simultaneous mixed 2D, stereoscopic 3D, and multi-view 3D presentations can be accommodated.
The following subsections describe numerous example embodiments of the present invention. It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made to the embodiments described herein without departing from the spirit and scope of the invention. Thus, the breadth and scope of the present invention should not be limited by any of exemplary embodiments described herein.
A. Example Display System and Method Embodiments
In embodiments, a display device may include an adaptive parallax barrier to enable various display capabilities. For instance,
When present, backlighting 116 emits light that is filtered by parallax barrier 104, and the filtered light is received by pixel array 114, which imposes image information on the filtered light by performing further filtering. When backlighting 116 is not present, pixel array 114 may be configured to emit light which includes the image information, and the emitted light is filtered by parallax barrier 104. Parallax barrier 104 operates as an image filter or “light manipulator” to filter received light with a plurality of barrier elements (also referred to as “blocking regions”) that are selectively substantially opaque or transparent to enable three-dimensional images to be generated from the image information provided by pixel array 114. The image information may include one or more still images, motion (e.g., video) images, etc. As shown in
Display device 112 may be implemented in various ways. For instance, display device 112 may be a television display (e.g., an LCD (liquid crystal display) television, a plasma television, etc.), a computer monitor, or any other type of display device. Image generator 102 may be any suitable type or combination of light and image generating devices, including an LCD screen, a plasma screen, an LED (light emitting device) screen (e.g., an OLED (organic LED) screen), etc. Parallax barrier 104 may be any suitable light filtering device, including an LCD filter, a mechanical filter (e.g., that incorporates individually controllable shutters), etc., and may be configured in any manner, including as a thin-film device (e.g., formed of a stack of thin film layers), etc. Backlighting 116 may be any suitable light emitting device, including a panel of LEDs or other light emitting elements.
Pixel array 208 includes a two-dimensional array of pixels (e.g., arranged in a grid or other distribution). Pixel array 208 is a self-illuminating or light-generating pixel array such that the pixels of pixel array 208 each emit light included in light 252 emitted from image generator 102. Each pixel may be a separately addressable light source (e.g., a pixel of a plasma display, an LCD display, an LED display such as an OLED display, or of other type of display). Each pixel of pixel array 208 may be individually controllable to vary color and intensity. In an embodiment, each pixel of pixel array 208 may include a plurality of sub-pixels that correspond to separate color channels, such as a trio of red, green, and blue sub-pixels included in each pixel.
Parallax barrier 104 is positioned proximate to a surface of pixel array 208. Barrier element array 210 is a layer of parallax barrier 104 that includes a plurality of barrier elements or blocking regions arranged in an array. Each barrier element of the array is configured to be selectively opaque or transparent. For instance,
For example, in one embodiment, each barrier element 304 may have a “band” shape that extends a vertical length of barrier element array 302, such that barrier element array 302 includes a single horizontal row of barrier elements 304. Each barrier element 304 may include one or more of such bands, and different portions of barrier element array 302 may include barrier elements 304 that include different numbers of such bands. One advantage of such a configuration is that barrier elements 304 extending a vertical length of barrier element array 302 do not need to have spacing between them because there is no need for drive signal routing in such space. For instance, in a two-dimensional LCD array configuration, such as TFT (thin film transistor) display, a transistor-plus-capacitor circuit is typically placed onsite at the corner of a single pixel in the array, and control signals for such transistors are routed between the LCD pixels (row-column control, for example). In a pixel configuration for a parallax barrier, local transistor control may not be necessary because barrier elements 304 may not need to be changing as rapidly as display pixels (e.g., pixels of pixel array 208). For a single row of vertical bands of barrier elements 304, control signals may be routed to the top and/or bottom of barrier elements 304. Because in such a configuration control signal routing between rows is not needed, the vertical bands can be arranged side-by-side with little-to-no space in between. Thus, if the vertical bands are thin and oriented edge-to-edge, one band or multiple adjacent bands (e.g., five bands) may comprise a barrier element 304 in a blocking state, followed by one band or multiple adjacent bands (e.g., two bands) that comprise a barrier element 304 in a non-blocking state (a slit), and so on. In the example of five bands in a blocking state and two bands in a non-blocking state, the five bands may combine to offer a single black barrier element of approximately 2.5 times the width of a single transparent slit with no spaces therein.
Barrier element array 302 may include any number of barrier elements 304. For example, in
Each barrier element 304 of barrier element array 302 is selectable to be substantially opaque or transparent. For instance,
Display controller 202 is configured to generate control signals to enable display device 250 to display two-dimensional and three-dimensional images to users 218 in viewing space 106. For example, pixel array controller 204 is configured to generate a control signal 214 that is received by pixel array 208. Control signal 214 may include one or more control signals used to cause pixels of pixel array 208 to emit light 252 of particular desired colors and/or intensity. Barrier array controller 206 is configured to generate a control signal 216 that is received by barrier element array 210. Control signal 216 may include one or more control signals used to cause each of barrier elements 304 of barrier element array 302 to be transparent or opaque. In this manner, barrier element array 210 filters light 252 to generate filtered light 110 that includes one or more two-dimensional and/or three-dimensional images that may be viewed by users 218 in viewing space 106.
For example, control signal 214 may control sets of pixels of pixel array 208 to each emit light representative of a respective image, to provide a plurality of images. Control signal 216 may control barrier elements 304 of barrier element array 210 to filter the light received from pixel array 208 according to the provided images such that one or more of the images are received by users 218 in two-dimensional form. For instance, control signal 216 may select one or more sets of barrier elements 304 of barrier element array 302 to be transparent, to transmit one or more corresponding two-dimensional images or views to users 218. Furthermore, control signal 216 may control sections of barrier element array 210 to include opaque and transparent barrier elements 304 to filter the light received from pixel array 208 so that one or more pairs of images or views provided by pixel array 208 are each received by users 218 as a corresponding three-dimensional image or view. For example, control signal 216 may select parallel strips of barrier elements 304 of barrier element array 302 to be transparent to form slits that enable three-dimensional images to be received by users 218.
In embodiments, control signal 216 may be generated by barrier array controller 206 to configure one or more characteristics of barrier element array 210. For example, control signal 216 may be generated to form any number of parallel strips of barrier elements 304 of barrier element array 302 to be transparent, to modify the number and/or spacing of parallel strips of barrier elements 304 of barrier element array 302 that are transparent, to select and/or modify a width and/or a length (in barrier elements 304) of one or more strips of barrier elements 304 of barrier element array 302 that are transparent or opaque, to select and/or modify an orientation of one or more strips of barrier elements 304 of barrier element array 302 that are transparent, to select one or more areas of barrier element array 302 to include all transparent or all opaque barrier elements 304, etc.
Backlighting 116 is a backlight panel that emits light 238. Light element array 236 (or “backlight array”) of backlighting 116 includes a two-dimensional array of light sources. Such light sources may be arranged, for example, in a rectangular grid. Each light source in light element array 236 is individually addressable and controllable to select an amount of light emitted thereby. A single light source may comprise one or more light-emitting elements depending upon the implementation. In one embodiment, each light source in light element array 236 comprises a single light-emitting diode (LED) although this example is not intended to be limiting.
Parallax barrier 104 is positioned proximate to a surface of backlighting 116 (e.g., a surface of the backlight panel). As described above, barrier element array 210 is a layer of parallax barrier 104 that includes a plurality of barrier elements or blocking regions arranged in an array. Each barrier element of the array is configured to be selectively opaque or transparent.
Similarly to pixel array 208 of
Display controller 202 of
For example, control signal 234 may control sets of light sources of light element array 236 to emit light 238. Control signal 216 may control barrier elements 304 of barrier element array 210 to filter light 238 received from light element array 236 to enable filtered light 240 to enable two- and/or three-dimensionality. Control signal 232 may control sets of pixels of pixel array 222 to filter filtered light 240 according to respective images, to provide a plurality of images. For instance, control signal 216 may select one or more sets of the barrier elements 304 of barrier element array 302 to be transparent, to enable one or more corresponding two-dimensional images to be delivered to users 218. Furthermore, control signal 216 may control sections of barrier element array 210 to include opaque and transparent barrier elements 304 to filter the light received from light element array 236 so that one or more pairs of images provided by pixel array 222 are each enabled to be received by users 218 as a corresponding three-dimensional image. For example, control signal 216 may select parallel strips of barrier elements 304 of barrier element array 302 to be transparent to form slits that enable three-dimensional images to be received by users 218.
Two-dimensional and three-dimensional images may be generated by system 100 of
Flowchart 600 begins with step 602. In step 602, light is received at an array of barrier elements. For example, as shown in
In step 604, a first set of the barrier elements of the array of barrier elements is configured in the blocking state and a second set of the barrier elements of the array of barrier elements is configured in the non-blocking state to enable a viewer to be delivered a three-dimensional view. Three-dimensional image content may be provided for viewing in viewing space 106. In such case, referring to
For instance,
Referring back to
For example, as shown in
Furthermore, light emanating from pixel array 702 is filtered by barrier element array 704 to form a plurality of images in a viewing space 726, including a first image 706a at a first location 708a and a second image 706b at a second location 708b. A portion of the light emanating from pixel array 702 is blocked by blocking barrier elements 710, while another portion of the light emanating from pixel array 702 passes through non-blocking barrier elements 712, according to the filtering by barrier element array 704. For instance, light 724a from pixel 714a is blocked by blocking barrier element 710a, and light 724b and light 724c from pixel 714b are blocked by blocking barrier elements 710b and 710c, respectively. In contrast, light 718a from pixel 714a is passed by non-blocking barrier element 712a and light 718b from pixel 714b is passed by non-blocking barrier element 712b.
By forming parallel non-blocking slits in a barrier element array, light from a pixel array can be filtered to form multiple images or views in a viewing space. For instance, system 700 shown in
For instance,
distance 1006/distance 1004=spacing 722/(distance 1004−distance 1012) Equation 1
As such, spacing 722 may be calculated (e.g., by slit spacing calculator 902) according to Equation 2 shown below, where slit spacing 722 is less than pixel separation distance 1006:
spacing 722=distance 1006×(distance 1004−distance 1012)/distance 1004 Equation 2
For instance, in one example embodiment, distance 1006 may equal 1.0 mm, distance 1004 may equal 2.0 meters, and distance 1012 may equal 5.0 mm. In such an example, spacing 722 may be calculated according to Equation 2 as follows:
spacing 722=1.0×(2000−5)/2000=0.9975 mm
In the above example, the centers of adjacent non-blocking barrier elements 712a-712e may be separated by spacing 722 of 0.9975 mm to form image 1002 at 2.0 meters from pixel array 702. As shown in
For example, if spacing 722 corresponds to the width of two barrier elements, single non-blocking barrier elements 712 having a width of 0.9975/2=0.4988 mm may be alternated with single blocking barrier elements 710 having the width of 0.4988 mm in barrier element array 704. Alternatively, if spacing 722 corresponds to the width of more than two barrier elements, one or more non-blocking barrier elements may be alternated with one or more blocking barrier elements to for non-blocking slits every 0.9975 mm. In one example, single non-blocking barrier elements 712 having a width of 0.9975/399=0.0025 mm may be alternated with three hundred and ninety-eight blocking barrier elements 710 each having the width of 0.0025 mm in barrier element array 704. In another example, ten non-blocking barrier elements 712 each having a width of 0.0025 mm may be alternated with three hundred and eighty-nine blocking barrier elements 710 each having the width of 0.0025 mm in barrier element array 704.
Thus, referring to
It is noted that in the examples of
First and second images 706a and 706b are configured to be perceived by a user as a three-dimensional image or view. For example,
In such an embodiment, first and second images 706a and 706b may be formed by display system 700 such that their centers are spaced apart a width of a user's pupils (e.g., an “interocular distance” 1106). For example, the spacing of first and second images 706a and 706b may be approximately 65 mm (or other suitable spacing) to generally be equivalent to interocular distance 1106. As described above, multiple instances of first and second images 706a and 706b may be formed by display system 700 that repeat in a viewing space. Thus, first and second images 706a and 706b shown in
It is noted that user 1102 of
Furthermore, although
As described, in an embodiment, display system 700 may be configured to generate a two-dimensional image for viewing by users in a viewing space. For example, flowchart 600 (
B. Example Parallax Barrier Configurations
As described above, various characteristics of a parallax barrier may be modified to provide various parallax barrier configurations that deliver three-dimensional views with different characteristics and/or at different locations (e.g., at a changed viewer position). For instance,
For instance,
In embodiments, blocking strips may be modified to be wider or narrower by any desired number of barrier elements 304, including a single barrier element (as in
For instance,
As shown in
For example, Equation 2 shown above may be rewritten as Equation 3 shown below to solve for distance 1004 in
distance 1004=(distance 1006×distance 1012)/(distance 1006−spacing 722) Equation 3
As indicated by Equation 3, if spacing 722 is less than the value of distance 1006, and is increased towards the value of distance 1006, distance 1004 increases. If spacing 722 is less than the value of distance 1006, and is decreased further from the value of distance 1006, distance 1004 decreases.
C. Example Embodiments Enabling Multiple Simultaneous Three-Dimensional Views
As described above, in embodiments, a parallax barrier may be configured to enable two or more three-dimensional views to be simultaneously delivered to a viewer. For example, in an embodiment, a flowchart 1600 shown in
Thus, according to flowchart 1600, a first three-dimensional view is enabled by a first set of barrier elements in the blocking state and a second set of barrier elements in the non-blocking state, and a second three-dimensional view is enabled by a third set of barrier elements in the blocking state and a fourth set of barrier elements in the non-blocking state, where the first-fourth sets of barrier elements are non-overlapping. As such, a first portion of a display device corresponding to the first and second sets of barrier elements delivers the first three-dimensional view to the viewer, and a second portion of the display device corresponding to the third and fourth sets of barrier elements simultaneously delivers the first three-dimensional view to the viewer. In embodiments, a barrier element array may include any number of such portions (that each include a set of blocking elements and a set of non-blocking barrier elements) to simultaneously deliver a corresponding number of three-dimensional views. Furthermore, the different regions of the barrier element array may be configured differently to deliver three-dimensional views having different characteristics, including providing differing degrees of stereoscopic three-dimensionality, views at different distances from the display device, and/or other different characteristics described elsewhere herein.
For instance, as indicated in step 1302 (
Furthermore, as shown in
Thus, in embodiments, a width of non-blocking slits in a barrier element may be modified in different barrier array configurations. The width of the non-blocking slits may be modified to have any width of one or more barrier elements 304. Furthermore, one or more portions of a barrier element array may include non-blocking slits having widths that are different than the widths of non-blocking slits elsewhere in the barrier element array to provide corresponding three-dimensional views. The widths of non-blocking slits may be widened or narrowed for various reasons, including decreasing or increasing display resolution, decreasing or increasing clarity of images generated by one or more portions of the barrier element array, etc. Furthermore, other characteristics of the different portions of the barrier element array may be modified in a similar manner to enable multiple three-dimensional views to be delivered to a viewer from a display device, including modifying the distance between adjacent non-blocking slits, a width of the parallel non-blocking slits, etc.
D. Example Image Orientation Embodiments
As described above, in embodiments, parallel transparent slits may be implemented in a barrier element array to generate three-dimensional images. In such an embodiment, the slits are oriented such that an axis that crosses through both eyes of a user (e.g., user 1104 in
For instance,
Furthermore, as shown in
As such, in
Note that in the example of
E. Example Two-Dimensional and Three-Dimensional Image Display Embodiments
In embodiments, a barrier element array may be configured to enable any combination and number of two-dimensional images and/or three-dimensional images to be displayed simultaneously. For example, the barrier element array may include one or more transparent portions to deliver one or more two-dimensional images and one or more portions that include parallel transparent slits to deliver one or more three-dimensional images. For instance,
In step 2002 of flowchart 2000, a first set of barrier elements of the barrier element array is configured to filter light from the first set of pixels to form a first image at a right eye location and to filter light from the second set of pixels to form a second image at a left eye location. For example, as shown in
In step 2004, a second set of barrier elements of the barrier element array is selected to be non-blocking to pass light from the third set of pixels to form a third image. For example, as shown in
As such, in
In
It is noted that although second portions 2204 and 2304 are shown for illustrative purposes in
Furthermore, although flowchart 2000 (and
F. Example Viewer Position Determining and Image Tuning Embodiments
As described above, parallax barriers may be reconfigured to change the locations of delivered views based on changing viewer positions. As such, a position of a viewer may be determined/tracked so that a parallax barrier may be reconfigured to deliver views consistent with the changing position of the viewer. In embodiments, a position of a viewer may be determined/tracked by determining a position of the viewer directly, or by determining a position of a device associated with the viewer (e.g., a device worn by the viewer, held by the viewer, sitting in the viewer's lap, in the viewer's pocket, sitting next the viewer, etc.). If multiple viewers are in a viewing space that are being delivered corresponding views (e.g., first and second viewers being delivered first and second three-dimensional views, respectively), the position of each viewer may be determined so that a parallax barrier may be reconfigured to deliver the views consistent with the changing positions of the viewers.
For instance,
Remote device 2404 may be configured in various ways to enable the position of viewer 2406 to be tracked. For instance,
Positioning module 2504 may be included in remote device 2404 to determine a position of remote device 2404 according to a positioning technique, such triangulation or trilateration. For instance, positioning module 2504 may include one or more receivers that receive satellite broadcast signals (e.g., a global positioning system (GPS) module that receives signals from GPS satellites). Position calculator 2506 may calculate the position of remote device 2404 by precisely timing the received signals according to GPS techniques. In another embodiment, positioning module 2504 may include one or more receivers that receive signals transmitted by display device 2402 that are used by position calculator 2506 to calculate the position of remote device 2404. In other embodiments, positioning module 2504 and position calculator 2506 may implement other types of positioning techniques.
User interface module 2508 may be present to enable viewer 2406 to interact with remote device 2404. For example, user interface module 2508 may include any number and combination of user interface elements, such as a keyboard, a thumb wheel, a pointing device, a roller ball, a stick pointer, a joystick, a thumb pad, a display, a touch sensitive display, any number of virtual interface elements, a voice recognition system, a haptic interface, and/or other user interface elements described elsewhere herein or otherwise known. User interface module 2508 may be configured to enable viewer 2406 to manually enter position information for viewer 2406 into remote device 2404, including manually entering coordinates of viewer 2406 in viewing space 106, entering an indication of a predetermined location in viewing space 106 into remote device 2404 (e.g., a “location A”, a “seat D,” etc.), or providing position information in any other manner.
Camera(s) 2510 may be present in remote device 2404 to enable optical position detection of viewer 2406. For example, camera(s) 2510 may be pointed by viewer 2406 at display device 2402, which may display a symbol or code, and one or more images of the displayed symbol or code may be captured by camera(s) 2510. Image processing system 2512 may receive the captured image(s), and determine a position of remote device 2404 relative to display device 2402 based on the captured image(s). For example, in an embodiment, camera(s) 2510 may include a pair of cameras, and image processing system 2512 may perform dual image processing to determine the position of remote device 2404 relative to display device 2402.
Transmitter 2502 is configured to transmit position information 2410 to display device 2402 from remote device 2404. Position information 2410 may include a determined position for remote device 2404 (e.g., calculated by position calculator 2506 or image processing system 2512), and/or may include captured data (e.g., received signal data received by positioning module 2504, images captured by camera(s) 2510, etc.) so that display device 2402 may determine the position of remote device 2404 based on the captured data.
Display device 2402 may have any form, such as any one or more of a display or monitor, a game console, a set top box, a stereo receiver, a computer, any other display device mentioned elsewhere herein or otherwise known, or any combination of such devices. Display device 2402 may be configured in various ways to enable the position of viewer 2406 to be tracked. For instance,
When present, microphone array 2608 includes one or more microphones that may be positioned in various microphone locations in and/or around display device 2402 to capture sounds (e.g., voice) from viewer 2406. Microphone array 2608 produces signals representative of the received sounds, which may be received by position calculator 2606. Position calculator 2606 may be configured to use the received signals to determine the location of viewer 2406. For example, position calculator 2606 may use voice recognition techniques to determine that the sounds are received from viewer 2406, and may perform audio localization techniques to determine a position of viewer 2406 based on the sounds.
Camera(s) 2610 may be present in display device 2402 to enable optical position detection of viewer 2406. For example, camera(s) 2610 may be pointed from display device 2402 to viewing space 106 to capture images of viewer 2406 and/or remote device 2404. Viewer 2406 and/or remote device 2404 may optionally display a symbol or code, and the displayed symbol or code may be captured in the images. Image processing system 2612 may receive the captured image(s), and determine a position of viewer 2406 and/or remote device 2404 relative to display device 2402 based on the captured image(s) (e.g., using facial recognition, image processing of the symbol or code, etc.). For example, in an embodiment, camera(s) 2610 may include a pair of cameras, and image processing system 2612 may perform dual image processing to determine the position of viewer 2406 and/or remote device 2404 relative to display device 2402.
When present, transmitter(s) may be configured to transmit signals that may be received by positioning module 2504 to determine a position of remote device 2404, as described above with respect to
Receiver 2602 may be configured to receive position information 2410 from remote device 2404. As described above, position information 2410 may include a determined position for remote device 2404 and/or may include captured data (e.g., received signal data, images, etc.). Display device 2402 may determine the position of remote device 2404 based on the captured data. For example, position calculator 2506 may determine a position of remote device 2404 based on the signal data received by positioning module 2504 at remote device 2404. Alternatively, image processing system 2512 may determine a position of remote device 2404 based on the images captured by camera(s) 2510 at remote device 2404.
In embodiments with multiple viewers that are receiving corresponding different views, the position of each viewer may be tracked in a similar manner (e.g., each viewer may have a corresponding remote device 2404) so that display device 2402 may be adapted to deliver views to the multiple viewers as they may reposition within the viewing space.
III. Example Display Controller ImplementationsDisplay controller 202, pixel array controller 204, barrier array controller 206, pixel array controller 228, light source controller 230, slit spacing calculator 902, positioning module 2504, position calculator 2506, image processing system 2512, position determiner module 2614, position calculator 2606, and image processing system 2612 may be implemented in hardware, software, firmware, or any combination thereof. For example, display controller 202, pixel array controller 204, barrier array controller 206, pixel array controller 228, light source controller 230, slit spacing calculator 902, positioning module 2504, position calculator 2506, image processing system 2512, position determiner module 2614, position calculator 2606, and/or image processing system 2612 may be implemented as computer program code configured to be executed in one or more processors. Alternatively, display controller 202, pixel array controller 204, barrier array controller 206, pixel array controller 228, light source controller 230, slit spacing calculator 902, positioning module 2504, position calculator 2506, image processing system 2512, position determiner module 2614, position calculator 2606, and/or image processing system 2612 may be implemented as hardware logic/electrical circuitry.
For instance,
Display controller 202 also includes a primary or main memory 2706, such as random access memory (RAM). Main memory 2706 has stored therein control logic 2728A (computer software), and data.
Display controller 202 also includes one or more secondary storage devices 2710. Secondary storage devices 2710 include, for example, a hard disk drive 2712 and/or a removable storage device or drive 2714, as well as other types of storage devices, such as memory cards and memory sticks. For instance, display controller 202 may include an industry standard interface, such a universal serial bus (USB) interface for interfacing with devices such as a memory stick. Removable storage drive 2714 represents a floppy disk drive, a magnetic tape drive, a compact disk drive, an optical storage device, tape backup, etc.
Removable storage drive 2714 interacts with a removable storage unit 2716. Removable storage unit 2716 includes a computer useable or readable storage medium 2724 having stored therein computer software 2728B (control logic) and/or data. Removable storage unit 2716 represents a floppy disk, magnetic tape, compact disk, DVD, optical storage disk, or any other computer data storage device. Removable storage drive 2714 reads from and/or writes to removable storage unit 2716 in a well known manner.
Display controller 202 further includes a communication or network interface 2718. Communication interface 2718 enables the display controller 202 to communicate with remote devices. For example, communication interface 2718 allows display controller 202 to communicate over communication networks or mediums 2742 (representing a form of a computer useable or readable medium), such as LANs, WANs, the Internet, etc. Network interface 2718 may interface with remote sites or networks via wired or wireless connections.
Control logic 2728C may be transmitted to and from display controller 202 via the communication medium 2742.
Any apparatus or manufacture comprising a computer useable or readable medium having control logic (software) stored therein is referred to herein as a computer program product or program storage device. This includes, but is not limited to, display controller 202, main memory 2706, secondary storage devices 2710, and removable storage unit 2716. Such computer program products, having control logic stored therein that, when executed by one or more data processing devices, cause such data processing devices to operate as described herein, represent embodiments of the invention.
Devices in which embodiments may be implemented may include storage, such as storage drives, memory devices, and further types of computer-readable media. Examples of such computer-readable storage media include a hard disk, a removable magnetic disk, a removable optical disk, flash memory cards, digital video disks, random access memories (RAMs), read only memories (ROM), and the like. As used herein, the terms “computer program medium” and “computer-readable medium” are used to generally refer to the hard disk associated with a hard disk drive, a removable magnetic disk, a removable optical disk (e.g., CDROMs, DVDs, etc.), zip disks, tapes, magnetic storage devices, MEMS (micro-electromechanical systems) storage, nanotechnology-based storage devices, as well as other media such as flash memory cards, digital video discs, RAM devices, ROM devices, and the like. Such computer-readable storage media may store program modules that include computer program logic for display controller 202, pixel array controller 204, barrier array controller 206, pixel array controller 228, light source controller 230, slit spacing calculator 902, positioning module 2504, position calculator 2506, image processing system 2512, position determiner module 2614, position calculator 2606, image processing system 2612, flowchart 600, step 1202, step 1302, flowchart 1600, step 1802, flowchart 2000 (including any one or more steps of flowcharts 600, 1600, and 2000), and/or further embodiments of the present invention described herein. Embodiments of the invention are directed to computer program products comprising such logic (e.g., in the form of program code or software) stored on any computer useable medium. Such program code, when executed in one or more processors, causes a device to operate as described herein.
The invention can work with software, hardware, and/or operating system implementations other than those described herein. Any software, hardware, and operating system implementations suitable for performing the functions described herein can be used.
As described herein, display controller 202 may be implemented in association with a variety of types of display devices. Such display devices may be implemented in or in association with a variety of types of media devices, such as a stand-alone display (e.g., a television display such as flat panel display, etc.), a computer, a game console, a set top box, a digital video recorder (DVR), etc. Media content that is delivered in two-dimensional or three-dimensional form according to embodiments described herein may be stored locally or received from remote locations. For instance, such media content may be locally stored for playback (replay TV, DVR), may be stored in removable memory (e.g. DVDs, memory sticks, etc.), may be received on wireless and/or wired pathways through a network such as a home network, through Internet download streaming, through a cable network, a satellite network, and/or a fiber network, etc. For instance,
While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not limitation. It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.
Claims
1. A display system that delivers multiple pairs of left eye views and right eye views to a viewer, the viewer being enabled to perceive each delivered pair as a three-dimensional view, the display system comprising:
- a pixel array; and
- an array of barrier elements positioned proximate to the pixel array, each of the barrier elements of the array of barrier elements having a blocking state and a non-blocking state;
- a first set of the barrier elements of the array of barrier elements being in the blocking state and a second set of the barrier elements of the array of barrier elements being in the non-blocking state;
- a third set of the barrier elements of the array of barrier elements being in the blocking state and a fourth set of the barrier elements of the array of barrier elements being in the non-blocking state; and
- the first and second sets of barrier elements being configured to enable a first three-dimensional view to be delivered to a viewer, and the third and fourth sets of barrier elements being configured to enable a second three-dimensional view to be delivered to the viewer simultaneously to the first three-dimensional view.
2. The display system of claim 1, wherein the pixel array includes a first set of pixels, a second set of pixels, a third set of pixels, and a fourth set of pixels; and
- wherein the first and second sets of the barrier elements of the array of barrier elements filter light from the pixel array to form a first image corresponding to the first set of pixels at a first right eye location and to form a second image corresponding to the second set of pixels at a first left eye location, and the third and fourth sets of the barrier elements of the array of barrier elements filter light from the pixel array to form a third image corresponding to the third set of pixels at a second right eye location and to form a fourth image corresponding to the fourth set of pixels at a second left eye location.
3. The display system of claim 2, wherein the pixel array further includes a fifth set of pixels; and
- wherein a fifth set of barrier elements of the array of barrier elements is selected to be non-blocking to pass light from the fifth set of pixels to form a fifth image, the fifth image being configured to be perceived as a two-dimensional image by the viewer.
4. The display system of claim 1, further comprising:
- a backlighting panel;
- wherein the pixel array includes a first set of pixels, a second set of pixels, a third set of pixels, and a fourth set of pixels;
- wherein the array of barrier elements is positioned between the backlighting panel and the pixel array, and the pixel array is positioned between the array of barrier elements and a viewing space;
- wherein the backlighting panel emits light that is filtered by the first and second sets of the barrier elements of the array of barrier elements, and the light filtered by the first and second sets of the barrier elements of the array of barrier elements is filtered by the first and second sets of pixels to deliver the first three-dimensional view to the viewer; and
- wherein the light emitted by the backlighting panel is filtered by the third and fourth sets of the barrier elements of the array of barrier elements, and the light filtered by the third and fourth sets of the barrier elements of the array of barrier elements is filtered by the third and fourth sets of pixels to deliver the second three-dimensional view to the viewer.
5. The display system of claim 4, wherein the pixel array further includes a fifth set of pixels;
- wherein a fifth set of barrier elements of the array of barrier elements is selected to be non-blocking; and
- wherein the light emitted by the backlighting panel passes through the fifth set of barrier elements and the fifth set of pixels to deliver the two-dimensional image to the viewer.
6. The display system of claim 1, wherein the barrier elements of the first set are arranged in a first plurality of parallel blocking strips and the barrier elements of the second set are arranged in a first plurality of parallel non-blocking strips interleaved with the first plurality of blocking parallel strips; and
- wherein the barrier elements of the third set are arranged in a second plurality of parallel blocking strips and the barrier elements of the fourth set are arranged in a second plurality of parallel non-blocking strips interleaved with the second plurality of blocking parallel strips.
7. The display system of claim 6, wherein a non-blocking strip of the first plurality of parallel non-blocking strips has a first width corresponding to a first number of barrier elements selected to be non-blocking, and a non-blocking strip of the second plurality of parallel non-blocking strips has a second width corresponding to a second number of barrier elements selected to be non-blocking, the first width being different from the second width.
8. The display system of claim 6, wherein a non-blocking strip of the first plurality of parallel non-blocking strips is oriented perpendicularly to a non-blocking strip of the second plurality of parallel non-blocking strips.
9. The display system of claim 8, wherein the first three-dimensional image is oriented perpendicularly to the second three-dimensional image.
10. The display system of claim 1, wherein the first three-dimensional image is oriented parallel to the second three-dimensional image.
11. A display system that delivers multiple views to a viewer, the display system comprising:
- a pixel array; and
- an array of barrier elements positioned proximate to the pixel array, each of the barrier elements of the array of barrier elements having a blocking state and a non-blocking state;
- a first set of the barrier elements of the array of barrier elements being in the blocking state and a second set of the barrier elements of the array of barrier elements being in the non-blocking state;
- a third set of the barrier elements of the array of barrier elements being in the non-blocking state; and
- the first and second sets of barrier elements being configured to enable a three-dimensional view to be delivered to a viewer, and the third set of barrier elements being configured to enable a two-dimensional view to be delivered to the viewer simultaneously to the three-dimensional view.
12. The display system of claim 11, wherein the pixel array includes a first set of pixels, a second set of pixels, and a third set of pixels;
- wherein the first and second sets of the barrier elements of the array of barrier elements filter light from the pixel array to form a first image corresponding to the first set of pixels at a first right eye location and to form a second image corresponding to the second set of pixels at a first left eye location, the first image and the second image being configured to be perceived as the three-dimensional view by the viewer; and
- wherein the third set of the barrier elements of the array of barrier elements passes light from the third set of pixels to form a third image configured to be perceived as the two-dimensional view by the viewer.
13. A method for delivering multiple pairs of left eye views and right eye views to a viewer, the viewer being enabled to perceive each delivered pair as a three-dimensional view, the method comprising:
- receiving light at an array of barrier elements, each of the barrier elements of the array of barrier elements having a blocking state and a non-blocking state;
- configuring a first set of the barrier elements of the array of barrier elements in the blocking state and a second set of the barrier elements of the array of barrier elements being in the non-blocking state to enable a first three-dimensional view to be delivered to a viewer; and
- configuring a third set of the barrier elements of the array of barrier elements in the blocking state and a fourth set of the barrier elements of the array of barrier elements being in the non-blocking state to enable a second three-dimensional view to be delivered to the viewer.
14. The method of claim 13, wherein a pixel array includes a first set of pixels, a second set of pixels, a third set of pixels, and a fourth set of pixels, the method further comprising:
- filtering light from the pixel array with the first and second sets of the barrier elements of the array of barrier elements to form a first image corresponding to the first set of pixels at a first right eye location and to form a second image corresponding to the second set of pixels at a first left eye location; and
- filtering light from the pixel array with the third and fourth sets of the barrier elements of the array of barrier elements to form a third image corresponding to the third set of pixels at a second right eye location and to form a fourth image corresponding to the fourth set of pixels at a second left eye location.
15. The method of claim 14, wherein the pixel array further includes a fifth set of pixels, the method further comprising:
- selecting a fifth set of barrier elements of the array of barrier elements to be non-blocking to pass light from the fifth set of pixels to form a fifth image, the fifth image being configured to be perceived as a two-dimensional image by the viewer.
16. The method of claim 13, wherein the pixel array includes a first set of pixels, a second set of pixels, a third set of pixels, and a fourth set of pixels, wherein said receiving light at an array of barrier elements comprises: the method further comprising:
- receiving the light from a backlighting panel;
- filtering the light received from the backlighting panel by the first and second sets of the barrier elements of the array of barrier elements and the first and second sets of pixels to deliver the first three-dimensional view to the viewer; and
- filtering the light received from the backlighting panel by the third and fourth sets of the barrier elements of the array of barrier elements and the third and fourth sets of pixels to deliver the second three-dimensional view to the viewer.
17. The method of claim 16, wherein the pixel array further includes a fifth set of pixels, the method further comprising:
- configuring a fifth set of barrier elements of the array of barrier elements to be non-blocking; and
- enabling the light received from the backlighting panel to pass through the fifth set of barrier elements and the fifth set of pixels to deliver the two-dimensional image to the viewer.
18. The method of claim 13, wherein said configuring a first set of the barrier elements of the array of barrier elements in the blocking state and a second set of the barrier elements of the array of barrier elements being in the non-blocking state to enable a first three-dimensional view to be delivered to a viewer comprises: wherein said configuring a third set of the barrier elements of the array of barrier elements in the blocking state and a fourth set of the barrier elements of the array of barrier elements being in the non-blocking state to enable a second three-dimensional view to be delivered to the viewer comprises:
- configuring the barrier elements of the first set in a first plurality of parallel blocking strips and the barrier elements of the second set in a first plurality of parallel non-blocking strips interleaved with the first plurality of blocking parallel strips; and
- configuring the barrier elements of the third set in a second plurality of parallel blocking strips and the barrier elements of the fourth set in a second plurality of parallel non-blocking strips interleaved with the second plurality of blocking parallel strips.
19. The method of claim 18, further comprising:
- configuring a non-blocking strip of the first plurality of parallel non-blocking strips to have a first width corresponding to a first number of barrier elements selected to be non-blocking; and
- configuring a non-blocking strip of the second plurality of parallel non-blocking strips to have a second width corresponding to a second number of barrier elements selected to be non-blocking, the first width being different from the second width.
20. The method of claim 18, further comprising:
- orienting a non-blocking strip of the first plurality of parallel non-blocking strips perpendicularly to a non-blocking strip of the second plurality of parallel non-blocking strips.
21. The method of claim 20, wherein the first three-dimensional image is oriented perpendicularly to the second three-dimensional image.
22. The method of claim 13, wherein the first three-dimensional image is oriented parallel to the second three-dimensional image.
Type: Application
Filed: Jul 28, 2010
Publication Date: Jun 30, 2011
Applicant: BROADCOM CORPORATION (Irvine, CA)
Inventors: James D. Bennett (Hroznetin), Jeyhan Karaoguz (Irvine, CA)
Application Number: 12/845,440