This application describes, among other things, systems, methods and devices for overlaying video/graphics onto displayed television programs.
Technologies associated with the communication of information have evolved rapidly over the last several decades. Television, cellular telephony, the Internet and optical communication techniques (to name just a few things) combine to inundate consumers with available information and entertainment options. Taking television as an example, the last three decades have seen the introduction of cable television service, satellite television service, pay-per-view movies and video-on-demand. Whereas television viewers of the 1960s could typically receive perhaps four or five over-the-air TV channels on their television sets, today's TV watchers have the opportunity to select from hundreds, thousands, and potentially millions of channels of shows and information. Video-on-demand technology, currently used primarily in hotels and the like, provides the potential for in-home entertainment selection from among thousands of movie titles.
The technological ability to provide so much information and content to end users provides both opportunities and challenges to system designers and service providers. One challenge is that while end users typically prefer having more choices rather than fewer, this preference is counterweighted by their desire that the selection process be both fast and simple. Unfortunately, the development of the systems and interfaces by which end users access media items has resulted in selection processes which are neither fast nor simple. Consider again the example of television programs. When television was in its infancy, determining which program to watch was a relatively simple process primarily due to the small number of choices. One would consult a printed guide which was formatted, for example, as series of columns and rows which showed the correspondence between (1) nearby television channels, (2) programs being transmitted on those channels and (3) date and time. The television was tuned to the desired channel by adjusting a tuner knob and the viewer watched the selected program. Later, remote control devices were introduced that permitted viewers to tune the television from a distance. This addition to the user-television interface created the phenomenon known as “channel surfing” whereby a viewer could rapidly view short segments being broadcast on a number of channels to quickly learn what programs were available at any given time.
Despite the fact that the number of channels and amount of viewable content has dramatically increased, the generally available user interface, control device options and frameworks for televisions has not changed much over the last 30 years. Printed guides are still the most prevalent mechanism for conveying programming information. The multiple button remote control with up and down arrows is still the most prevalent channel/content selection mechanism. The reaction of those who design and implement the TV user interface to the increase in available media content has been a straightforward extension of the existing selection procedures and interface objects. Thus, the number of rows in the printed guides has been increased to accommodate more channels. The number of buttons on the remote control devices has been increased to support additional functionality and content handling, e.g., as shown in
In addition to increases in bandwidth and content, the user interface bottleneck problem is being exacerbated by the aggregation of technologies. Consumers are reacting positively to having the option of buying integrated systems rather than a number of segregable components. An example of this trend is the combination television/VCR/DVD in which three previously independent components are frequently sold today as an integrated unit. This trend is likely to continue, potentially with an end result that most if not all of the communication devices currently found in the household will be packaged together as an integrated unit, e.g., a television/VCR/DVD/internet access/radio/stereo unit. Even those who continue to buy separate components will likely desire seamless control of, and interworking between, the separate components. With this increased aggregation comes the potential for more complexity in the user interface. For example, when so-called “universal” remote units were introduced, e.g., to combine the functionality of TV remote units and VCR remote units, the number of buttons on these universal remote units was typically more than the number of buttons on either the TV remote unit or VCR remote unit individually. This added number of buttons and functionality makes it very difficult to control anything but the simplest aspects of a TV or VCR without hunting for exactly the right button on the remote. Many times, these universal remotes do not provide enough buttons to access many levels of control or features unique to certain TVs. In these cases, the original device remote unit is still needed, and the original hassle of handling multiple remotes remains due to user interface issues arising from the complexity of aggregation. Some remote units have addressed this problem by adding “soft” buttons that can be programmed with the expert commands. These soft buttons sometimes have accompanying LCD displays to indicate their action. These too have the flaw that they are difficult to use without looking away from the TV to the remote control. Yet another flaw in these remote units is the use of modes in an attempt to reduce the number of buttons. In these “moded” universal remote units, a special button exists to select whether the remote should communicate with the TV, DVD player, cable set-top box, VCR, etc. This causes many usability issues including sending commands to the wrong device, forcing the user to look at the remote to make sure that it is in the right mode, and it does not provide any simplification to the integration of multiple devices. The most advanced of these universal remote units provide some integration by allowing the user to program sequences of commands to multiple devices into the remote. This is such a difficult task that many users hire professional installers to program their universal remote units.
Some attempts have also been made to modernize the screen interface between end users and media systems. However, these attempts typically suffer from, among other drawbacks, an inability to easily scale between large collections of media items and small collections of media items. For example, interfaces which rely on lists of items may work well for small collections of media items, but are tedious to browse for large collections of media items. Interfaces which rely on hierarchical navigation (e.g., tree structures) may be speedier to traverse than list interfaces for large collections of media items, but are not readily adaptable to small collections of media items. Additionally, users tend to lose interest in selection processes wherein the user has to move through three or more layers in a tree structure. For all of these cases, current remote units make this selection process even more tedious by forcing the user to repeatedly depress the up and down buttons to navigate the list or hierarchies. When selection skipping controls are available such as page up and page down, the user usually has to look at the remote to find these special buttons or be trained to know that they even exist. Accordingly, organizing frameworks, techniques and systems which simplify the control and screen interface between users and media systems as well as accelerate the selection process, while at the same time permitting service providers to take advantage of the increases in available bandwidth to end user equipment by facilitating the supply of a large number of media items and new services to the user have been proposed in U.S. patent application Ser. No. 10/768,432, filed on Jan. 30, 2004, entitled “A Control Framework with a Zoomable Graphical User Interface for Organizing, Selecting and Launching Media Items”, the disclosure of which is incorporated here by reference.
Of particular interest for this specification are the remote devices usable to interact with such frameworks, as well as other applications, systems and methods for these remote devices for interacting with such frameworks. As mentioned in the above-incorporated application, various different types of remote devices can be used with such frameworks including, for example, trackballs, “mouse”-type pointing devices, light pens, etc. However, another category of remote devices which can be used with such frameworks (and other applications) is 3D pointing devices with scroll wheels. The phrase “3D pointing” is used in this specification to refer to the ability of an input device to move in three (or more) dimensions in the air in front of, e.g., a display screen, and the corresponding ability of the user interface to translate those motions directly into user interface commands, e.g., movement of a cursor on the display screen. The transfer of data between the 3D pointing device may be performed wirelessly or via a wire connecting the 3D pointing device to another device. Thus “3D pointing” differs from, e.g., conventional computer mouse pointing techniques which use a surface, e.g., a desk surface or mousepad, as a proxy surface from which relative movement of the mouse is translated into cursor movement on the computer display screen. An example of a 3D pointing device can be found in U.S. patent application Ser. No. 11/119,663, the disclosure of which is incorporated here by reference.
Content which is displayed on televisions is, today, highly controlled by the content distributor, e.g., cable television providers, satellite television providers and the like. Additionally, as compared to, for example, personal computers, interactive services are extremely limited on televisions. Accordingly, it would be desirable to provide services, methods, devices and systems which address these concerns.
According to an exemplary embodiment, there is a method for overlaying graphics by a first device on top of a video content, the method includes: receiving the video content; overlaying a first graphics on top of the video content; creating a composite output of the video content and the overlaid first graphics; and transmitting the composite output to a television (TV).
According to another exemplary embodiment, there is a first device for overlaying graphics on top of a video content, the first device includes: a communications interface configured to receive the video content; a processor configured to overlay a first graphics on top of the video content and configured to create a composite output of the video content and the overlaid first graphics; and the communications interface configured to transmit the composite output to a television (TV).
The accompanying drawings illustrate exemplary embodiments of the present invention, wherein:
The following detailed description of the invention refers to the accompanying drawings. The same reference numbers in different drawings identify the same or similar elements. Also, the following detailed description does not limit the invention. Instead, the scope of the invention is defined by the appended claims.
In order to provide some context for this discussion, an exemplary aggregated media system 200 in which the present invention can be implemented will first be described with respect to
In this exemplary embodiment, the media system 200 includes a television/monitor 212, a video cassette recorder (VCR) 214, digital video disk (DVD) recorder/playback device 216, audio/video tuner 218 and compact disk player 220 coupled to the I/O bus 210. The VCR 214, DVD 216 and compact disk player 220 may be single disk or single cassette devices, or alternatively may be multiple disk or multiple cassette devices. They may be independent units or integrated together. In addition, the media system 200 includes a microphone/speaker system 222, video camera 224 and a wireless I/O control device 226. According to exemplary embodiments of the present invention, the wireless I/O control device 226 is a 3D pointing device. The wireless I/O control device 226 can communicate with the entertainment system 200 using, e.g., an IR or RF transmitter or transceiver. Alternatively, the I/O control device can be connected to the entertainment system 200 via a wire.
The entertainment system 200 also includes a system controller 228. According to one exemplary embodiment of the present invention, the system controller 228 operates to store and display entertainment system data available from a plurality of entertainment system data sources and to control a wide variety of features associated with each of the system components. As shown in
As further illustrated in
More details regarding this exemplary entertainment system and frameworks associated therewith can be found in the above-incorporated by reference U.S. patent application “A Control Framework with a Zoomable Graphical User Interface for Organizing, Selecting and Launching Media Items”. Alternatively, remote devices and interaction techniques between remote devices and user interfaces in accordance with the present invention can be used in conjunction with other types of systems, for example computer systems including, e.g., a display, a processor and a memory system or with various other systems and applications.
As mentioned in the Background section, remote devices which operate as 3D pointers are of particular interest for the present specification, although the present invention is not limited to systems including 3D pointers. Such devices enable the translation of movement of the device, e.g., linear movement, rotational movement, acceleration or any combination thereof, into commands to a user interface. An exemplary loop-shaped, 3D pointing device 300 is depicted in
According to exemplary embodiments of the present invention, it is anticipated that 3D pointing devices 300 will be held by a user in front of a display 308 and that motion of the 3D pointing device 300 will be translated by the 3D pointing device into output which is usable to interact with the information displayed on display 308, e.g., to move the cursor 310 on the display 308. For example, such 3D pointing devices and their associated user interfaces can be used to make media selections on a television as shown in
Referring again to
Returning now to the application illustrated in
Of particular interest for exemplary embodiments of the present invention are the global navigation objects 324 displayed above the UI objects 322 that are associated with various media applications. Global navigation objects 324 provide short cuts to significant applications, frequently used UI views or the like, without cluttering up the interface and in a manner which is consistent with other aspects of the particular user interface in which they are implemented. Initially some functional examples will be described below, followed by some more general characteristics of global navigation objects according to exemplary embodiments of the present invention.
Although the global navigation objects 324 are displayed in
The other global navigation objects 402 through 406 similarly provide shortcut access to various UI views and/or functionality. For example, global navigation object 402 is an “up” global navigation object. Actuation of this global navigation object will result in the user interface displaying a next “highest” user interface view relative to the currently displayed user interface view. The relationship between a currently displayed user interface view and its next “highest” user interface view will depend upon the particular user interface implementation. According to exemplary embodiments of the present invention, user interfaces may use, at least in part, zooming techniques for moving between user interface views. In the context of such user interfaces, the next “highest” user interface view that will be reached by actuating global navigation object 402 is the UI view which is one zoom level higher than the currently displayed UI view. Thus, actuation of the global navigation object 402 will result in a transition from a currently displayed UI view to a zoomed out UI view which can be displayed along with a zooming transition effect. The zooming transition effect can be performed by progressive scaling and displaying of at least some of the UI objects displayed on the current UI view to provide a visual impression of movement of those UI objects away from an observer. In another functional aspect of the present invention, user interfaces may zoom-in in response to user interaction with the user interface which will, likewise, result in the progressive scaling and display of UI objects that provide the visual impression of movement toward an observer. More information relating to zoomable user interfaces can be found in U.S. patent application Ser. No. 10/768,432, filed on Jan. 30, 2004, entitled “A Control Framework with a Zoomable Graphical User Interface for Organizing, Selecting and Launching Media Items”, and U.S. patent application Ser. No. 09/829,263, filed on Apr. 9, 2001, entitled “Interactive Content Guide for Television Programming”, the disclosures of which are incorporated here by reference.
Movement within the user interface between different user interface views is not limited to zooming. Other non-zooming techniques can be used to transition between user interface views. For example, panning can be performed by progressive translation and display of at least some of the user interface objects which are currently displayed in a user interface view. This provides the visual impression of lateral movement of those user interface objects to an observer.
Regardless of the different techniques which are employed in a particular user interface implementation to transition between user interface views, the provision of a global navigation object 402 which provides an up function may be particularly beneficial for user interfaces in which there are multiple paths available for a user to reach the same UI view. For example, consider the UI view 500 shown in
Returning to
Upon actuating a control element 604, e.g., by clicking a button on a the 3D pointing device 300 when a particular element 604 has the focus, the corresponding alphanumeric input is displayed in the textbox 602, disposed above the text entry widget, and one or more groups of displayed items related to the alphanumeric input provided via the control element(s) can be displayed on the interface, e.g., below the text entry widget. Thus, the GUI screen depicted in
Returning again to
Comparing
In their over display state, which is triggered by the presence of a cursor proximate and/or over one of the global navigation objects 324, that global navigation object has its outline filled in to become opaque. Once in its over display state, the corresponding global navigation object 400-406 can be actuated, e.g., by a button click of the 3D pointing device 300.
Lastly, for at least some UI views, the global navigation objects 324 can also have a non-displayed state, wherein the global navigation objects 324 become completely invisible. This non-displayed state can be used, for example, in UI views such as the live TV view 700 where it is desirable for the UI objects which operate as controls to overlay the live TV feed only when the user wants to use those controls. This can be implemented by, for example, having the global navigation objects 324 move from their watermark display state to their non-displayed state after a predetermined amount of time has elapsed without input to the user interface from the user while a predetermined UI view is currently being displayed. Thus, if the live TV view 700 is currently being displayed on the television and the user interface does not receive any input, e.g., motion of the 3D pointing device 300, for more than 3 or 5 seconds, then the global navigation objects 324 can be removed from the display.
Global navigation objects 324 may have other attributes according to exemplary embodiments of the present invention, including the number of global navigation objects, their location as a group on the display, their location as individual objects within the group and their effects. Regarding the former attribute, the total number of global navigation objects should be minimized to provide needed short-cut functionality, but without obscuring the primary objectives of the user interface, e.g., access to media items, or overly complicating the interface so that the user can learn the interface and form navigation habits which facilitate quick and easy navigation among the media items. Thus according to various exemplary embodiments of the present invention, the number of global navigation objects 324 provided on any one UI view may be 1, 2, 3, 4, 5, 6 or 7 but preferably not more than 7 global navigation objects will be provided to any given user interface. The previously discussed and illustrated exemplary embodiments illustrate the global navigation objects 324 being generally centered along a horizontal axis of the user interface and proximate a top portion thereof, however other exemplary embodiments of the present invention may render the global navigation objects in other locations, e.g., the upper righthand or lefthand corners of the user interface. Whichever portion of the user interface is designated for display of the global navigation buttons, that portion of the user interface should be reserved for such use, i.e., such that the other UI objects are not selectable within the portion of the user interface which is reserved for the global navigation objects 324.
Additionally, location of individual global navigation objects 324 within the group of global navigation objects, regardless of where the group as a whole is positioned on the display, can be specified based on, e.g., frequency of usage. For example, it may be easier for users to accurately point to global navigation objects 324 at the beginning or end of a row that those global navigation objects in the middle of the row. Thus the global navigation objects 324 which are anticipated to be most frequently used, e.g., the home and live TV global navigation objects in the above-described examples, can be placed at the beginning and end of the row of global navigation objects 324 in the exemplary embodiment of
According to some exemplary embodiments of the present invention, global navigation objects can have other characteristics regarding their placement throughout the user interface. According to one exemplary embodiment, the entire set of global navigation objects are displayed, at least initially, on each and every UI view which is available in a user interface (albeit the global navigation objects may acquire their non-displayed state on at least some of those UI views as described above). This provides a consistency to the user interface which facilitates navigation through large collections of UI objects. On the other hand, according to other exemplary embodiments, there may be some UI views on which global navigation objects are not displayed at all, such that the user interface as a whole will only have global navigation objects displayed on substantially every UI view in the user interface.
Likewise, it is generally preferable that, for each UI view in which the global navigation objects are displayed, they be displayed in an identical manner, e.g., the same group of global navigation objects, the same images/text/icons used to represent each global navigation function, the same group location, the same order within the group, etc. However there may be some circumstances wherein, for example, the functional nature of the user interface suggests a slight variance to this rule, e.g., wherein one or more global navigation objects are permitted to vary based on a context of the UI view in which it is displayed. For example, for a UI view where direct access to live TV is already available, the live TV global navigation object 406 can be replaced or removed completely. In the above-described exemplary embodiment this can occur when, for example, a user zooms-in on the application entitled “Guide” in
Still another feature of global navigation objects according to some exemplary embodiments of the present invention is the manner in which they are handled during transition from one UI view to another UI view. For example, as mentioned above some user interfaces according to exemplary embodiments of the present invention employ zooming and/or panning animations to convey a sense of position change within a “Zuiverse” of UI objects as a user navigates between UI views. However, according to some exemplary embodiments of the present invention, the global navigation objects are exempt from these transition effects. That is, the global navigation objects do not zoom, pan or translate and are, instead, fixed in their originally displayed position while the remaining UI objects shift from, e.g., a zoomed-out view to a zoomed-in view. This enables user interfaces to, on the one hand, provide the global navigation objects as visual anchors, while, on the other hand, not detract from conveying the desired sense of movement within the user interface by virtue of having the global navigation buttons in their default watermark (transparent) state.
Although not shown in
The third region, defined by border 1104, is indicative of the portion of the content which will be displayed if the user actuates a user control to display the content associated with rectangle 1104, e.g., by panning to that portion of the entire web page or image shown in rectangle 1100. That is, the third region may include a to be displayed version of the content item. This rectangle 1104 is movable within rectangle 1100 like a cursor based on movement of an input device, such as the 3D pointing device described above. Each of the borders associated with the three rectangles 1100, 1102 and 1104 may be displayed with different colors to further distinguish their respective functions.
According to other exemplary embodiments, overlaid graphics can be provided directly on top of typical TV programs, video on demand, or the like, either under the control of the end user, e.g., the viewer of the TV program as it is being displayed/output via his or her television, or under the control of a 3rd party (e.g., an advertiser) or both. These overlaid graphics can be implemented using a relatively seamless integration with the current TV watching experience that does not force the user to have to choose between interaction with the overlaid graphics and watching the TV program. Instead, according to exemplary embodiments, the overlaid graphics can, in many cases, be implemented to appear as a natural choice or as additional value to the user in the context of the user's normal TV viewing habits.
According to exemplary embodiments, the use of a pointing-based interface can create a natural interaction between the viewer and the watching experience. This can be done by, for example, evolving the user experience by integrating some traditional controls where necessary, but generally shifting the user towards a pointer-based experience that offers a broader array of user options. According to exemplary embodiments, overlaid graphics and so-called “shared screen” technologies can be used to integrate the TV screen with the interactive experience. It is believed that the fuller integration of these options, according to exemplary embodiments described below, with the more traditional TV viewing will blur the line between the overlaid graphics and the TV program, thus simply becoming an interactive TV experience, not one or the other. In support of this implementation, evolving web technology platforms, e.g., HTML5, can provide a lightweight engine for use. Additionally, the use of one or more non-proprietary languages can expand opportunities for developers and producers, which in turn can produce more and varied content for end users and advertisers.
According to exemplary embodiments, the overlaid graphics can be part of a system which can include any or all of, but are not limited to, a full screen TV picture, a partial screen TV picture, a main application portal, playback controls, single sign on ability, a web browser, an on demand search and integrated overlay displays. The main application portal can be an access point to applications as well as features which can include an Application Store, system settings, accounts and help information. Playback controls can include traditional controls such as, channel selection, play, pause, stop, fast forward, rewind, skip and volume controls, preferably provided via a convenient and clear access. Various applications, including search on tap, as well as examples of various overlaid graphics are described, according to exemplary embodiments, in more detail below.
The above described features can be accomplished by, according to exemplary embodiments, providing an overlay box 1200 between a content source (or numerous content sources) 1202 and the television 1204. As will be described below, the overlay box 1200 receives the raw or native video and/or audio feed from the content source 1202 and overlays graphics on top of the raw or native video and/or audio feed to provide a composite output on the television 1204. Some examples of features which can be delivered to the end user using this technology will first be shown and described with respect to
Starting with
Note that another interesting feature of some exemplary embodiments, although not required, is that graphics which are overlaid on one television, e.g., under the control of the end user, can be captured, conveyed and rendered on to the TV screen of another user, as will be described shortly. To this end,
According to some exemplary embodiments, functionality is provided which enables the end user to pause the video feed from the content source on the full screen, while the live video continues to be displayed as a picture-in-picture 1306, e.g., in the upper right hand corner of the TV screen as shown in
According to exemplary embodiments, the size and location of the displayed TV contents, e.g., a live TV program or video on demand (VoD), shown on the TV screen can be modified as shown with respect to
According to exemplary embodiments, applications and overlaid graphics can be displayed to further enhance a viewer's experience. For one example, a viewer can personalize a ticker (which can be displayed as an overlay which may have elements which are transparent, translucent or opaque) to include desired information, e.g., specific weather, sports or news information. An example of this is shown in
Additionally, a so-called “TVAmie” experience can be had by watching TV while interacting with friends over a variety of platforms, e.g., TVs, smart phones, and the web, as shown in the layout 1332 of
According to exemplary embodiments, commercial activities can be supported while watching a TV program. For example, while watching a TV program an actress comes onto the screen carrying a designer handbag. The TV program viewing area can be reduced and specific information can be displayed describing the designer handbag including a link for purchasing the designer handbag. Alternatively, this information could be overlaid on the screen. While using a designer handbag in this purely illustrative example, various other purchasable items can be offered in this manner. Additionally, the item of interest can be highlighted or outlined by overlaid graphics as desired.
According to another exemplary embodiment, an overlay menu can be transparently (or an opaque exact copy) overlaid onto a menu which is currently being displayed on a TV program. In this case, the overlaid menu can look exactly like the menu which the overlay box received as a part of the received video content. The menu, in this example, described upcoming (or previously covered) segments of a TV show. A user can select the segment of interest and skip to that segment for viewing. Additionally, any skipped over commercial breaks can be played prior to the selected segment of interest. The overlay box 1200 can also remember which commercials have been played and if desired not necessarily repeat the commercial if the user decides to repeat the same section of the TV program for repetitive views.
According to exemplary embodiments, the various functions of an overlay box 1200 can, for example, be provided by using an architecture such as that shown in
In addition to enabling user generated graphical overlays, which may be conveyed to a community of friends, according to exemplary embodiments such technology enables 3rd parties, e.g., advertisers to have a mechanism for introducing graphic overlays over top of content sources which are feeding a television. For example, such graphic overlay technologies enable, among other things, personalized stats and news—real-time scores, real-time in-depth game stats, and fantasy player updates. It can also include news for your favorite teams and players. This is all personalized and configured on a website; community experience—live community experiences for your sports game day. Additionally, it can include a personal telestrator (that can be shared with friends), chatting/talking, viewing sports pool results, seeing live polls (should the call be overturned or not), booing and cheering, and twitter feeds; breaking action—alerts for the breaking game day action so that the sports fan never misses a good game which can be personalizable for particular interests.
According to exemplary embodiments, advertisers can be selectively permitted to download advertisements to overlay boxes, e.g., based on user selected permissions or based upon applications uploaded to each user's overlay box. Such advertisements can then be overlaid onto displayed TV programs, e.g., when particular incoming TV content is recognized. For example, an overlaid advertisement for a sports drink can be overlaid onto a TV program being watched by a user when the overlay box recognizes that the program is a sports program. This can be performed outside of the control of the content distributor, e.g., a cable company, providing 3rd parties with a mechanism to provide their message to the end users via a distribution channel other than that controlled by the content source provider/distributor.
Exemplary implementations of the overlay box are shown in
Systems and methods for processing data according to exemplary embodiments of the present invention can be performed by one or more processors executing sequences of instructions contained in a memory device. Such instructions may be read into the memory device from other computer-readable mediums such as secondary data storage device(s). Execution of the sequences of instructions contained in the memory device causes the processor to operate, for example, as described above. In alternative embodiments, hard-wire circuitry may be used in place of or in combination with software instructions to implement the present invention.
An exemplary device 1600 which can be used, for example, to act as the overlay box 1200, will now be described with respect to
Utilizing the above-described exemplary systems according to exemplary embodiments, a method for overlaying graphics by a first device on top of a video content is shown in the flowchart of
Numerous variations of the afore-described exemplary embodiments are contemplated. The above-described exemplary embodiments are intended to be illustrative in all respects, rather than restrictive, of the present invention. Thus the present invention is capable of many variations in detailed implementation that can be derived from the description contained herein by a person skilled in the art. All such variations and modifications are considered to be within the scope and spirit of the present invention as defined by the following claims. No element, act, or instruction used in the description of the present application should be construed as critical or essential to the invention unless explicitly described as such. Also, used herein, the article “a” is intended to include one or more items.
This application is a continuation of U.S. patent application Ser. No. 13/518,394, filed Jun. 22, 2012, which is a National Stage of PCT Application No. PCT/US11/00024, filed Jan. 6, 2011, which is related to, and claims priority from, U.S. Provisional Patent Application Ser. No. 61/292,684 filed Jan. 6, 2010, entitled “OVERLAY DEVICE, SYSTEM AND METHOD”, the disclosure of which is incorporated here by reference
Number | Date | Country | |
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61292684 | Jan 2010 | US |
Number | Date | Country | |
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Parent | 13518394 | Jun 2012 | US |
Child | 15477380 | US |