Abstract:
A method and apparatus for displaying a segmented video by displaying the segmented in video in a chronologically ordered list. The system is further operative to permit a user to rearrange the order and contents of the list and to combine segments into a combined video and permitting the user to share combined segments from the list.

Description:
[0001]    This application claims priority from U.S. Provisional Application No. 61/775,332 filed Mar. 8, 2013. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    Portable electronic devices are becoming more ubiquitous. These devices, such as mobile phones, music players, cameras, tablets and the like often contain a combination of devices, thus rendering carrying multiple objects redundant. For example, current touch screen mobile phones, such as the Apple iPhone or Samsung Galaxy android phone contain video and still cameras, global positioning navigation system, internet browser, text and telephone, video and music player, and more. These devices are often enabled an multiple networks, such as WiFi, wired, and cellular, such as 3G, to transmit and received data. 
         [0003]    The quality of secondary features in portable electronics has been constantly improving. For example, early “camera phones” consisted of low resolution sensors with fixed focus lenses and no flash. Today, many mobile phones include full high definition video capabilities, editing and filtering tools, as well as high definition displays. With this improved capabilities, many users are using these devices as their primary photography devices. Hence, there is a demand for even more improved performance and professional grade embedded photography tools. Additionally, users wish to share their content with others in more ways that just printed photographs. These methods of sharing may include email, text, or social media websites, such as Facebook, twitter, YouTube or the like. 
         [0004]    Users may wish to share video content with others easily. Today, users must upload content to a video storage site or a social media site, such as YouTube. However, if the videos are too long, users must edit the content in a separate program to ready the content for upload. These features are not commonly available on mobile devices, so uses must first download the content to a computer to perform the editing. As this is often beyond either the skill level of the user, or requires too much time and effort to be practical, users often are dissuaded from sharing video content. Thus, it is desirable to overcome these problems with current cameras and software embedded in mobile electronic devices. 
       SUMMARY OF THE INVENTION 
       [0005]    A method and apparatus for generating a graphical list of media content and video segments. 
         [0006]    In accordance with an aspect of the present invention, an apparatus comprising a source of a plurality of video data, a processor operative to order said plurality of video data in a list according to a chronological order, reorder the order of said plurality of said video data in said list in response to a first user command and combine at least two of said plurality of video data to generate a combined video file in response to a second user command, and a memory operative to store said combined video file. 
         [0007]    In accordance with another aspect of the present invention, a method for of displaying a segmented video comprising the steps of receiving a plurality of video data, ordering said plurality of video data in a list according to a chronological order, displaying said list, reordering the order of said plurality of said video data in said list in response to a first user command, and combining at least two of said plurality of video data to generate a combined video file in response to a second user command. 
         [0008]    In accordance with yet another aspect of the present invention, a method comprising the steps of receiving a first video file, segmenting said first video file into a plurality of video data ordering said plurality of video data in a list according to a chronological order, displaying said list, reordering the order of said plurality of said video data in said list in response to a first user command, and combining at least two of said plurality of video data to generate a combined video file in response to a second user command. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0009]    These and other aspects, features and advantages of the present disclosure will be described or become apparent from the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings. 
           [0010]    In the drawings, wherein like reference numerals denote similar elements throughout the views: 
           [0011]      FIG. 1  shows a block diagram of an exemplary embodiment of mobile electronic device; 
           [0012]      FIG. 2  shows an exemplary mobile device display having an active display according to the present invention; 
           [0013]      FIG. 3  shows an exemplary process for image stabilization and reframing in accordance with the present disclosure; 
           [0014]      FIG. 4  shows an exemplary mobile device display having a capture initialization  400  according to the present invention; 
           [0015]      FIG. 5  shows an exemplary process for initiating an image or video capture  500  in accordance with the present disclosure; 
           [0016]      FIG. 6  shows, an exemplary embodiment of automatic video segmentation according to an aspect of the present invention. 
           [0017]      FIG. 7  shows a method of segmenting a video  700  in accordance with the present invention. 
           [0018]      FIG. 8  shows a light box application according to one aspect of the present invention. 
           [0019]      FIG. 9  shows various exemplary operations that can performed within the light box application. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0020]    The exemplifications set out herein illustrate preferred embodiments of the invention, and such exemplifications are not to be construed as limiting the scope of the invention in any manner. 
         [0021]    Referring to  FIG. 1 , a block diagram of an exemplary embodiment of mobile electronic device is shown. While the depicted mobile electronic device is a mobile phone  100 , the invention may equally be implemented on any number of devices, such as music players, cameras, tablets, global positioning navigation systems etc. A mobile phone typically includes the ability to send and receive phone calls and text messages, interface with the Internet either through the cellular network or a local wireless network, take pictures and videos, play back audio and video content, and run applications such as word processing, programs, or video games. Many mobile phones include GPS and also include a touch screen panel as part of the user interface. 
         [0022]    The mobile phone includes a main processor  150  that is coupled to each of the other major components. The main processor, or processors, routes the information between the various components, such as the network interfaces, camera  140 , touch screen  170 , and other input/output I/O interfaces  180 . The main processor  150  also processes audio and video content for play back either directly on the device or on an external device through the audio/video interface. The main processor  150  is operative to control the various sub devices, such as the camera  140 , touch screen  170 , and the USB interface  130 . The main processor  150  is further operative to execute subroutines in the mobile phone used to manipulate data similar to a computer. For example, the main processor may be used to manipulate image files after a photo has been taken by the camera function  140 . These manipulations may include cropping, compression, color and brightness adjustment, and the like. 
         [0023]    The cell network interface  110  is controlled by the main processor  150  and is used to receive and transmit information over a cellular wireless network. This information may be encoded in various formats, such as time division multiple access (TDMA), code division multiple access (CDMA) or Orthogonal frequency-division multiplexing (OFDM). Information is transmitted and received from the device trough a cell network interface  110 . The interface may consist of multiple antennas encoders, demodulators and the like used to encode and decode information into the appropriate formats for transmission. The cell network interface  110  may be used to facilitate voice or text transmissions, or transmit and receive information from the internet. This information may include video, audio, and or images. 
         [0024]    The wireless network interface  120 , or wifi network interface, is used to transmit and receive information over a wifi network. This information can be encoded in various formats according to different wifi standards, such as 802.11g, 802.11b, 802.11 ac and the like. The interface may consist of multiple antennas encoders, demodulators and the like used to encode and decode information into the appropriate formats for transmission and decode information for demodulation. The wifi network interface  120  may be used to facilitate voice or text transmissions, or transmit and receive information from the internet. This information may include video, audio, and or images. 
         [0025]    The universal serial bus (USB) interface  130  is used to transmit and receive information over a wired like, typically to a computer or other USB enabled device. The USB interface  120  can be used to transmit and receive information, connect to the internet, transmit and receive voice and text calls. Additionally, this wired link may be used to connect the USB enabled device to another network using the mobile devices cell network interface  110  or the wifi network interface  120 . The USB interface  120  can be used by the main processor  150  to send and receive configuration information to a computer. 
         [0026]    A memory  160 , or storage device, may be coupled to the main processor  150 . The memory  160  may be used for storing specific information related to operation of the mobile device and needed by the main processor  150 . The memory  160  may be used for storing audio, video, photos, or other data stored and retrieved by a user. 
         [0027]    The input output (I/O) interface  180 , includes buttons, a speaker/microphone for use with phone calls, audio recording and playback, or voice activation control. The mobile device may include a touch screen  170  coupled to the main processor  150  through a touch screen controller. The touch screen  170  may be either a single touch or multi touch screen using one or more of a capacitive and resistive touch sensor. The smartphone may also include additional user controls such as but not limited to an on/off button, an activation button, volume controls, ringer controls, and a multi-button keypad or keyboard 
         [0028]    Turning now to  FIG. 2  an exemplary mobile device display having an active display  200  according to the present invention is shown. The exemplary mobile device application is operative for allowing a user to record in any framing and freely rotate their device while shooting, visualizing the final output in an overlay on the device&#39;s viewfinder during shooting and ultimately correcting for their orientation in the final output. 
         [0029]    According to the exemplary embodiment, when a user begins shooting their current orientation is taken into account and the vector of gravity based on the device&#39;s sensors is used to register a horizon. For each possible orientation, such as portrait  210 , where the device&#39;s screen and related optical sensor is taller than wide, or landscape  250 , where the device&#39;s screen and related optical sensor is wider than tall, an optimal target aspect ratio is chosen. An inset rectangle  225  is inscribed within the overall sensor that is best-fit to the maximum boundaries of the sensor given the desired optimal aspect ratio for the given (current) orientation. The boundaries of the sensor are slightly padded in order to provide ‘breathing room’ for correction. This inset rectangle  225  is transformed to compensate for rotation  220 ,  230 ,  240  by essentially rotating in the inverse of the device&#39;s own rotation, which is sampled from the device&#39;s integrated gyroscope. The transformed inner rectangle  225  is inscribed optimally inside the maximum available bounds of the overall sensor minus the padding. Depending on the device&#39;s current most orientation, the dimensions of the transformed inner rectangle  225  are adjusted to interpolate between the two optimal aspect ratios, relative to the amount of rotation. 
         [0030]    For example, if the optimal aspect ratio selected for portrait orientation was square (1:1) and the optimal aspect ratio selected for landscape orientation was wide (16:9), the inscribed rectangle would interpolate optimally between 1:1 and 16:9 as it is rotated from one orientation to another. The inscribed rectangle is sampled and then transformed to fit an optimal output dimension. For example, if the optimal output dimension is 4:3 and the sampled rectangle is 1:1, the sampled rectangle would either be aspect filled (fully filling the 1:1 area optically, cropping data as necessary) or aspect fit (fully fitting inside the 1:1 area optically, blacking out any unused area with ‘letter boxing’ or ‘pillar boxing’. In the end the result is a fixed aspect asset where the content framing adjusts based on the dynamically provided aspect ratio during correction. So for example a 16:9 video comprised of 1:1 to 16:9 content would oscillate between being optically filled  260  (during 16:9 portions) and fit with pillar boxing  250  (during 1:1 portions). 
         [0031]    Additional refinements whereby the total aggregate of all movement is considered and weighed into the selection of optimal output aspect ratio are in place. For example, if a user records a video that is ‘mostly landscape’ with a minority of portrait content, the output format will be a landscape aspect ratio (pillar boxing the portrait segments). If a user records a video that is mostly portrait the opposite applies (the video will be portrait and fill the output optically, cropping any landscape content that falls outside the bounds of the output rectangle). 
         [0032]    Referring now to  FIG. 3 , an exemplary process for image stabilization and reframing  300  in accordance with the present disclosure is shown. The system is initialized in response to the capture mode of the camera being initiated. This initialization may be initiated according to a hardware or software button, or in response to another control signal generated in response to a user action. Once the capture mode of the device is initiated, the mobile device sensor  320  is chosen in response to user selections. User selections may be made through a setting on the touch screen device, through a menu system, or in response to how the button is actuated. For example, a button that is pushed once may select a photo sensor, while a button that is held down continuously may indicate a video sensor. Additionally, holding a button for a predetermined time, such as 3 seconds, may indicate that a video has been selected and video recording on the mobile device will continue until the button is actuated a second time. 
         [0033]    Once the appropriate capture sensor is selected, the system then requests a measurement from a rotational sensor  320 . The rotational sensor may be a gyroscope, accelerometer, axis orientation sensor, light sensor or the like, which is used to determine a horizontal and/or vertical indication of the position of the mobile device. The measurement sensor may send periodic measurements to the controlling processor thereby continuously indicating the vertical and/or horizontal orientation of the mobile device. Thus, as the device is rotated, the controlling processor can continuously update the display and save the video or image in a way which has a continuous consistent horizon. 
         [0034]    After the rotational sensor has returned an indication of the vertical and/or horizontal orientation of the mobile device, the mobile device depicts an inset rectangle on the display indicating the captured orientation of the video or image  340 . As the mobile device is rotated, the system processor continuously synchronizes inset rectangle with the rotational measurement received from the rotational sensor  350 . They user may optionally indicate a preferred final video or image ration, such as 1:1, 9:16, 16:9, or any ratio decided by the user. The system may also store user selections for different ratios according to orientation of the mobile device. For example, the user may indicate a 1:1 ratio for video recorded in the vertical orientation, but a 16:9 ratio for video recorded in the horizontal orientation. In this instance, the system may continuously or incrementally rescale video  360  as the mobile device is rotated. Thus a video may start out with a 1:1 orientation, but could gradually be rescaled to end in a 16:9 orientation in response to a user rotating from a vertical to horizontal orientation while filming. Optionally, a user may indicate that the beginning or ending orientation determines the final ratio of the video. 
         [0035]    Turning now to  FIG. 4 , an exemplary mobile device display having a capture initialization  400  according to the present invention is shown. An exemplary mobile device is show depicting a touch tone display for capturing images or video. According to an aspect of the present invention, the capture mode of the exemplary device may be initiated in response to a number of actions. Any of hardware buttons  410  of the mobile device may be depressed to initiate the capture sequence. Alternatively, a software button  420  may be activated through the touch screen to initiate the capture sequence. The software button  420  may be overlaid on the image  430  displayed on the touch screen. The image  430  acts as a viewfinder indicating the current image being captured by the image sensor. An inscribed rectangle  440  as described previous may also be overlaid on the image to indicate an aspect ratio of the image or video be captured. 
         [0036]    Referring now to  FIG. 5 , an exemplary process for initiating an image or video capture  500  in accordance with the present disclosure is shown. Once the imaging software has been initiated, the system waits for an indication to initiate image capture. Once the image capture indication has been received by the main processor  510 , the device begins to save the data sent from the image sensor  520 . In addition, the system initiates a timer. The system then continues to capture data from the image sensor as video data. In response to a second indication from the capture indication, indicating that capture has been ceased  530 , the system stops saving data from the image sensor and stops the timer. 
         [0037]    The system then compares the timer value to a predetermined time threshold  540 . The predetermined time threshold may be a default value determined by the software provider, such as 1 second for example, or it may be a configurable setting determined by a user. If the timer value is less than the predetermined threshold  540 , the system determines that a still image was desired and saves the first frame of the video capture as a still image in a still image format, such as jpeg or the like  560 . The system may optionally chose another frame as the still image. If the timer value is greater than the predetermined threshold  540 , the system determines that a video capture was desired. The system then saves the capture data as a video file in a video file format, such as mpeg or the like  550 . The system then may then return to the initialization mode, waiting for the capture mode to be initiated again. If the mobile device is equipped with different sensors for still image capture and video capture, the system may optionally save a still image from the still image sensor and start saving capture data from the video image sensor. When the timer value is compared to the predetermined time threshold, the desired data is saved, while the unwanted data is not saved. For example, if the timer value exceeds the threshold time value, the video data is saved and the image data is discarded. 
         [0038]    Turning now to  FIG. 6 , an exemplary embodiment of automatic video segmentation  600  is shown. The system is directed towards automatic video segmentation that aims to compute and output video that is sliced into segments that are as close to a predetermined time interval in seconds as possible. Additionally the segments may be longer or shorter dependant in response to attributes of the video being segmented. For example, it is not desirable to bisect content in an awkward way, such as in the middle of a spoken word. A timeline  610  is shown, depicting a video segmented into nine segments (1-9). Each of the segments is approximately 8 seconds long. The original video has a length of at least 1 minute and 4 seconds. 
         [0039]    In this exemplary embodiment, the time interval chosen for each video segment is 8 seconds. This initial time interval may be longer or shorter, or may be optionally configurable by the user. An 8 second base timing interval was chosen as it currently represents a manageable data segment having a reasonable data transmission size for downloading over various network types. An approximately 8 second clip would have a reasonable average duration to expect an end user to peruse a single clip of video content delivered in an exploratory manner on a mobile platform. A clip of approximately 8 seconds may be a perceptually memorable duration of time where an end user can theoretically retain a better visual memory of more of the content it displays. Additionally, 8 seconds is an even phrase length of 8 beats at 120 beats per minute, the most common tempo of modern Western music. This is approximately the duration of a short phrase of 4 bars (16 beats) which is the most common phrase length (duration of time to encapsulate an entire musical theme or section). This tempo is perceptually linked to an average active heart rate, suggesting action and activity and reinforcing alertness. Furthermore, having a small, known size clip facilitates easier bandwidth calculations based upon given that video compression rates and bandwidth are generally computed around base-8 numbers, such as megabits per second, where 8 megabits=1 megabyte, therefore each segment of video would be around 1 megabyte when encoded at 1 megabits per second. 
         [0040]    Turning now to  FIG. 7 , a method of segmenting a video  700  in accordance with the present invention is shown. In order to procedurally fragment video content into ideal segments of 8 seconds on perceptually good edit boundaries, a number of approaches to analyzing the video content may be applied within the system. First, an initial determination may made regarding the nature of the video content as to whether it originated from another application or was recorded using the current mobile device  720 . If the content originated from another source or application, the video content is analyzed first for obvious edit boundaries using scene break detection  725 . Any statistically significant boundaries may be marked, with emphasis on the boundaries on or nearest to the desired 8 second interval  730 . If the video content was recorded using the current mobile device, the sensor data may be logged while recording  735 . This may include the delta of movement of the device on all axes from the device&#39;s accelerometer and/or the rotation of the device on all axes based on the device&#39;s gyroscope. This logged data may be analyzed to find motion onsets, deltas that are statistically significant relative to the mean magnitude over time for any given vector. These deltas are logged with emphasis on the boundaries nearest to the desired 8 second interval  740 . 
         [0041]    The video content can be further perceptually analyzed for additional cues that can inform edit selection. If the device hardware, firmware or OS provides any integrated region of interest (ROI) detection, including face ROI selection, it is utilized to mark any ROIs in the scene  745 . The onset appearance or disappearance of these ROIs (i.e. the moments nearest when they appear in frame and disappear from frame) can be logged with emphasis on the boundaries nearest to the desired 8 second interval. 
         [0042]    Audio-based onset detection upon overall amplitude will look for statistically significant changes (increases or decreases) in amplitude relative to either the zero crossing, a noise floor or a running average power level  750 . Statistically significant changes will be logged with emphasis on those nearest to the desired 8 second interval. Audio-based onset detection upon amplitude within spectral band ranges will rely on converting the audio signal using a FFT algorithm into a number of overlapping FFT bins. Once converted, each bin may be discreetly analyzed for statistically significant changes in amplitude relative to its own running average. All bins are in turn averaged together and the most statistically significant results across all bands are logged as onsets, with emphasis on those nearest to the desired 8 second interval. Within this method the audio can be pre-processed with comb filters to selectively emphasize/deemphasize bands, for example, the bands in the range of normal human speech can be emphasized whereas high frequency bands synonymous with noise can be deemphasized. 
         [0043]    Visual analysis of the average motion within content can be determined for a video content to help establish an appropriate segmentation point  755 . At a limited frame resolution and sampling rate as required for real time performance characteristics, the magnitude of the average motion in-frame can be determined and used to look for statistically significant changes over time, logging results with emphasis on those nearest to the desired 8 second interval. Additionally, the average color and luminance of the content can be determined using a simple, low resolution analysis of the recorded data, logging statistically significant changes with emphasis on those nearest to the desired 8 second interval. 
         [0044]    Once any or all of the above analysis is completed, the final logged output may be analyzed weighting each result into an overall average  760 . This post-processing pass of the analysis data finds the most viable points in time based on the weighted and averaged outcome of all individual analysis processes. The final, strongest average points on or nearest the desired 8 second interval are computed as output that forms the model for fragmentation edit decisions. 
         [0045]    The post processing step  760  may consider any or all of the previously mentioned marked points on the video as indicators of preferred segmentation points. The different determination factors can be weighted. Also, determination points that vary too far from the preferred segment length, such as 8 seconds, may be weighted lower than those closest to the preferred segment length. 
         [0046]    Turning now to  FIG. 8 , a light box application  800  according to one aspect of the present invention is shown. The light box application is directed towards a method and system for using a list-driven selection process to improve video and media time-based editing. The light box application is shown in both the vertical  810  and the horizontal orientation  820 . The light box application may be initiated after a segmented video has been saved. Alternatively, the light box application may be initiated in response to a user command. Each of the segments is initially listed chronologically with a preview generated for each. The preview may be a single image taken from the video segment or a portion of the video segment. Additional media content or data can be added to the light box application. For example, photos or videos received from other sources may be included in the light box list to permit a user to share or edit the received content or combine these received contents with newly generated content. Thus, the application permits video and media time-based editing into a simple list driven selection process. 
         [0047]    The light box application may be used as a center point for sharing editorial decisions. The light box allows users to quickly and easily view content and decide what to keep, what to discard, and how and when to share with others. The light box function may work with the camera, with channel browsing or as a point to import media from other places. The light box view may contain a list of recent media or grouped sets of media. Each item, image or video, is displayed as at thumbnail, with a caption, aduration, and a possible group count. The caption may be generated automatically or by the user. The duration may be simplified, so as to present to the user the weight and pace of the media content. The light box title bar may include the category of the light box set with its item count, along with navigation to go back, import an item, or open a menu. 
         [0048]    The light box landscape view  820  offers a different layout, with media items listed on one side and optionally, a method of sharing in some immediately assessable form on the other side. This may include links or previews of facebook, twitter, or other social media applications. 
         [0049]    Turning now to  FIG. 9 , various exemplary operations  900  that can performed within the light box application are shown. Media that is captured, by an integrated camera feature for example, imported from the device&#39;s existing media library, possibly recorded with or created by other applications or downloaded from web based sources, or curated from content published directly within the related application is all collected into the light box in a preview mode  905 . The light box presents media in a simple vertical list, categorized into groups based on events, such as groupings of time, within which the media was collected. Each item is represented by a list row including a thumbnail or simplified duration for the given piece of media. By tapping on any item the media can be previewed in an expanded panel that displays in direct relation to the item. 
         [0050]    The light box application may optionally have an expanded items view  910 , which previews the item. The expanded items view  910  exposes options to processing the media item, captioning, and sharing it. Tapping the close button closes the item or tapping another item below it closes the item and opens another. 
         [0051]    Scrolling up or down within the light box application permits the user to navigate the media items  915 . The header may remain at the top of the list, or it may float atop the content. Scrolling to the end of a list may enable navigation to other, older lists  920 . The headings of the older lists may be revealed under tension while dragging. Dragging past tension transitions to the older lists. Holding and dragging on an item allows the user to reorder items or combine items by dragging one onto another  925 . Swiping an item to the left removes the item from the light box  930 . Removing items may or may not remove them from the device, not just the light box application. Dragging and dropping items onto other items may be used to combine the items into a group  935 , or combine the dragged item into a group. Pinching items together combines all items that were within the pinch rage into a group  940 . When previewing combined items, they play sequentially and show an item count that can be tapped to expand the combined items below the preview window  945 . The regular light box items may then be pushed down to permit the expanded items to be displayed as rows. 
         [0052]    Items can be manipulated by dragging on them from within the light box application. Items can be removed from the light box application by dragging left on any item the item for example  930 . By dragging right on any item, the item can be promoted to publish immediately  950 , which transitions to a screen allowing the user to share the given item&#39;s media on one or many sharing locations  955 . Tapping a share button when previewing may also enable the sharing of an item. By pressing holding on any item it becomes draggable, at which point the item can be dragged up and down to re-organize its position in the overall list. Time in the list is represented vertically, top-to-bottom. For example, the top most item is first in time were the media to be performed sequentially. Any whole group of items (kept under a single event heading) can be collectively previewed (played sequentially as a single preview comprised of all items in order of time), can be collectively deleted or published using the same gestures and means of control as a single list item. When previewing any item that contains video or time-based media, playback can be controlled by dragging left-to-right on the related list item row. The current position in time is marked by a small line that can be dragged to offset time during playback by the user. When previewing any item that contains video or time-based media, by pinching with 2 fingers horizontally upon the related list item row a selection range is defined which can be pinched and dragged in order to trim the original media as the final playback output. When previewing any item that contains an image or still media, by dragging left-to-right or right-to-left on the related list item row any additional adjacent frames captured can be selectively ‘scrubbed’. For example if during a single photo capture the camera records several frames of output, this gesture can allow the user to cycle through and select the best frame as the final still frame. 
         [0053]    Items that have recently been published (uploaded to one or many publishing destinations) are automatically cleared from the light box list. Items that time out, or live in the light box for longer than a prolonged inactivity period, such as several days, are automatically cleared from the light box list. The light box media is built upon a central, ubiquitous storage location on the device so that other applications who incorporate the same light box view all share from the same current pool of media. This makes multi-application collaboration on multimedia asset editing simple and synchronous. 
         [0054]    It should be understood that the elements shown and discussed above, may be implemented in various forms of hardware, software or combinations thereof. Preferably, these elements are implemented in a combination of hardware and software on one or more appropriately programmed general-purpose devices, which may include a processor, memory and input/output interfaces. The present description illustrates the principles of the present disclosure. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described or shown herein, embody the principles of the disclosure and are included within its scope. All examples and conditional language recited herein are intended for informational purposes to aid the reader in understanding the principles of the disclosure and the concepts contributed by the inventor to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions. Moreover, all statements herein reciting principles, aspects, and embodiments of the disclosure, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future, i.e., any elements developed that perform the same function, regardless of structure. Thus, for example, it will be appreciated by those skilled in the art that the block diagrams presented herewith represent conceptual views of illustrative circuitry embodying the principles of the disclosure. Similarly, it will be appreciated that any flow charts, flow diagrams, state transition diagrams, pseudocode, and the like represent various processes which may be substantially represented in computer readable media and so executed by a computer or processor, whether or not such computer or processor is explicitly shown.