Patent Publication Number: US-9905964-B2

Title: Magnetically aligned accessory to device connections

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of U.S. Provisional Patent Application No. 62/214,160, filed on Sep. 3, 2015, which is incorporated by reference herein in its entirety for all purposes. 
    
    
     FIELD 
     The described embodiments relate generally to consumer electronic devices. More particularly, the described embodiments relate to accessory devices that are used in conjunction with consumer electronic devices. 
     BACKGROUND 
     Accessory devices that are used in conjunction with consumer electronic devices are known. Various electronic devices can include visual displays having touch screens that include sensors designed to receive touches, gestures, and other inputs in response to touches to the display. Such electronic devices can have associated accessory devices that provide additional functions therewith, such as smart covers and the like. If desired, alignments and/or electrical connectivity between such accessory devices and electronic device can be facilitated through the use of magnets in some cases. Unfortunately, magnets can be limited in nature, such as where magnetic attractions are still strong even where component alignments are offset or inaccurate. As such, the use of mechanical alignment features typically accompany magnetic components for aligning and coupling accessory devices to electronic devices. While magnetic based accessory device to electronic device connections and couplings have thus worked well in the past, there can be room for improvement. Accordingly, there is a need for improved magnetic based accessory device to electronic device couplings and connections. 
     SUMMARY 
     Representative embodiments set forth herein disclose various structures, methods, and features thereof for the disclosed magnetically aligned accessory to device couplings and connections. In particular, the disclosed embodiments set forth accessory device to electronic device couplings and connections that are facilitated by magnetic arrays or arrangements. 
     According to various embodiments, a magnetically aligned accessory to device connection facilitates coupling an accessory to an electronic device. The magnetically aligned accessory to device connection can include at least: 1) a first magnet array arranged in a first pattern of alternating polarities, and 2) a second magnet array arranged in a second pattern of alternating polarities that corresponds to the first pattern to facilitate a magnetic coupling. Each pattern can have an inner portion of alternating polarities that is symmetric about an inner point and an outer portion of alternating pluralities that is asymmetric about the inner or center point. 
     In some embodiments, each pattern can be linear, and magnets can be of varying lengths. The magnetic coupling can have a normalized attraction force only at one intended orientation and alignment of one magnet array to the other, and less than one-third of the normalized attraction force at any other orientation and alignment. Magnet array(s) can include shunts to limit magnetic flux elsewhere about the electronic device. Also, pins disposed at one magnet array can align with and contact electrical contacts at the other magnet array to provide for device connectivity when the magnet arrays couple at the intended orientation and alignment. 
     This Summary is provided merely for purposes of summarizing some example embodiments so as to provide a basic understanding of some aspects of the subject matter described herein. Accordingly, it will be appreciated that the above-described features are merely examples and should not be construed to narrow the scope or spirit of the subject matter described herein in any way. Other features, aspects, and advantages of the subject matter described will become apparent from the following Detailed Description, Figures, and Claims. 
     Other aspects and advantages of the embodiments described herein will become apparent from the following detailed description taken in conjunction with the accompanying drawings which illustrate, by way of example, the principles of the described embodiments. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The included drawings are for illustrative purposes and serve only to provide examples of possible structures and methods for the disclosed magnetically aligned accessory to device connections. These drawings in no way limit any changes in form and detail that may be made to the embodiments by one skilled in the art without departing from the spirit and scope of the embodiments. The embodiments will be readily understood by the following detailed description in conjunction with the accompanying drawings, wherein like reference numerals designate like structural elements. 
         FIG. 1A  illustrates in top plan view an exemplary electronic device according to various embodiments of the present disclosure. 
         FIG. 1B  illustrates in front perspective view the exemplary electronic device of  FIG. 1A  according to various embodiments of the present disclosure. 
         FIG. 2A  illustrates in top plan view the exemplary electronic device of  FIG. 1A  and an associated accessory device coupled thereto in a wide-open configuration according to various embodiments of the present disclosure. 
         FIG. 2B  illustrates in top plan view the exemplary electronic device and accessory device combination of  FIG. 2A  in a fully closed configuration according to various embodiments of the present disclosure. 
         FIG. 2C  illustrates in side elevation view the exemplary electronic device and accessory device combination of  FIG. 2A  in a fully closed configuration according to various embodiments of the present disclosure. 
         FIG. 3A  illustrates in side elevation view the exemplary electronic device and accessory device combination of  FIG. 2A  in a keyboard mode configuration according to various embodiments of the present disclosure. 
         FIG. 3B  illustrates in front perspective view the exemplary electronic device and accessory device combination of  FIG. 2A  in a display mode configuration according to various embodiments of the present disclosure. 
         FIG. 3C  illustrates in front perspective view the exemplary electronic device and accessory device combination of  FIG. 2A  in a typing mode configuration according to various embodiments of the present disclosure. 
         FIG. 4  illustrates in side cross-sectional view an exemplary magnetically aligned accessory to device connection according to various embodiments of the present disclosure. 
         FIG. 5A  illustrates in side elevation view an exemplary electronic device having various components for forming a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. 
         FIG. 5B  illustrates in side elevation view an exemplary accessory device having various components for forming a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. 
         FIG. 5C  illustrates in side elevation view an exemplary pin to electrical contact arrangement for a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. 
         FIG. 6A  illustrates in side elevation view exemplary magnet arrays having a horizontal offset and resulting horizontal force therebetween according to various embodiments of the present disclosure. 
         FIG. 6B  illustrates in side cross-sectional view an exemplary magnetically aligned accessory to device connection having a vertical force at a magnet array thereof according to various embodiments of the present disclosure 
         FIG. 7A  illustrates in side elevation view an exemplary electronic device having a full-length magnet array for forming a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. 
         FIG. 7B  illustrates in side elevation view the full-length magnet array of  FIG. 7A  according to various embodiments of the present disclosure. 
         FIG. 7C  illustrates in side elevation view an exemplary series of electronic devices having varying length magnet arrays for forming magnetically aligned accessory to device connections according to various embodiments of the present disclosure. 
         FIG. 8A  illustrates in front elevation view an exemplary magnetic arrangement for a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. 
         FIG. 8B  illustrates in side elevation view an exemplary magnetic flux density field for a portion of the magnetic arrangement of  FIG. 8A  according to various embodiments of the present disclosure. 
         FIG. 8C  illustrates in side elevation view an exemplary shunt and magnet arrangement for the portion of the partial magnetic arrangement of  FIG. 8B  according to various embodiments of the present disclosure. 
         FIG. 8D  illustrates in side elevation view an alternative exemplary partial magnetic arrangement for a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. 
         FIG. 9A  illustrates in side cross-sectional view an exemplary magnetically connected accessory to device arrangement using a convex magnet according to various embodiments of the present disclosure. 
         FIG. 9B  illustrates in side cross-sectional view an exemplary magnetically connected accessory to device arrangement using a thin concave magnet according to various embodiments of the present disclosure. 
         FIG. 9C  illustrates in side cross-sectional view an exemplary magnetically connected accessory to device arrangement using a thick concave magnet according to various embodiments of the present disclosure. 
         FIG. 10  illustrates in front perspective view an exemplary magnet array portion having short and long concave magnets according to various embodiments of the present disclosure. 
         FIG. 11  illustrates in side elevation views various exemplary magnet array displacements for an exemplary magnetically connected accessory to an electronic device arrangement according to various embodiments of the present disclosure. 
         FIG. 12  illustrates a graph of forces based on displacement for an exemplary magnetically connected accessory to an electronic device arrangement according to various embodiments of the present disclosure. 
         FIG. 13  illustrates a flowchart of an exemplary method for magnetically connecting an accessory to an electronic device according to various embodiments of the present disclosure. 
         FIG. 14  illustrates in block diagram format an exemplary computing device that can be used to implement the various components and techniques described herein according to various embodiments of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Accessory devices that are used in conjunction with consumer electronic devices can provide additional functions therewith, such as by way of smart covers and the like. Couplings, alignments, and/or electrical connectivity between such accessory devices and other electronic devices can be facilitated through the use of magnets in some instances. Other mechanical alignment features are typically used as well, however, due to the generally inexact abilities of magnetic components to align different devices accurately as they are coupled. This can result in added parts, expenses, and complexities. It may thus be useful to provide improved components and ways for magnetically coupling accessories to consumer electronic devices. 
     The embodiments set forth herein provide various improved structures and methods for providing magnetically aligned accessory to device connections. A magnetically aligned accessory to device connection can include at least a first magnet array arranged in a first pattern of alternating polarities, and a second magnet array arranged in a second pattern of alternating polarities corresponding to the first pattern. Each magnet array can have a plurality of magnets arranged into the alternating polarity patterns, and the patterns can be matching inverses of each other, so as to facilitate a magnetic attachment and coupling through magnetic strength only. Each pattern can have an inner portion of alternating polarities that is symmetric about an inner point and an outer portion of alternating pluralities that is asymmetric about the inner point, which can be a center point. Each device or component to be coupled can have its own magnet array, such as a first magnet array for an electronic device and a second magnet array for an associated accessory device. In various embodiments, little to no added mechanical components or features are used to facilitate alignment and coupling of an accessory device to a primary or other electronic device. The magnetic coupling can have a normalized attraction force only at one intended orientation and alignment of one magnet array to the other, and less than one-half of the normalized attraction force at any other orientation and alignment. 
     In some embodiments, each magnet array pattern can be linear in nature and asymmetric about a central point, and the magnets can be of varying lengths. One or both magnet arrays can include shunts disposed between adjacent magnets to limit magnetic flux elsewhere about the electronic device. Further components can include a plurality of electrical contacts disposed at one magnet array, and a plurality of pins disposed at the other magnet array, wherein the pins align with and contact the electrical contacts when the magnet array couples to the first magnet array at the intended orientation and alignment. The pins and electrical contacts can be used to provide electrical connectivity between the devices. 
     The foregoing approaches provide various structures and methods for the disclosed magnetically aligned accessory to device connections. A more detailed discussion of these structures, methods, and features thereof is set forth below and described in conjunction with  FIGS. 1-10 , which illustrate detailed diagrams of devices and components that can be used to implement these structures, methods, and features. 
     Turning first to  FIGS. 1A and 1B , an exemplary consumer electronic device is illustrated in top plan and front perspective views. Electronic device  100  can be a tablet computing device, for example, although other similar types and varieties of electronic devices can also apply for the various disclosed components and features disclosed herein. Electronic device  100  can include an outer housing  102  having a device coupling surface  103  or region suitable for coupling an associated accessory or accessory device (not shown). Outer housing  102  can be adapted to hold various processing and electronic components inside, and can also provide space for an exterior touchscreen or other display  104 , and one or more buttons  106 , among other possible device components. 
     Continuing with  FIG. 2A  the exemplary electronic device of  FIG. 1A  and an associated accessory device coupled thereto in a wide-open configuration is shown in top plan view according to various embodiments of the present disclosure. Wide-open configuration  200  can involve electronic device  100  being coupled to an accessory device  210 , which can be, for example, a smart cover or other accessory adapted to cover the touchscreen or other display of the electronic device  100 . Accessory device  210  can be adapted to provide additional functionalities and/or features with respect to the electronic device  100 , as is generally known. Accessory device  210  can include a plurality of flaps  212  or foldable sections, and can couple to the electronic device  100  at a coupling component  220 , which can include at least a magnetic attachment feature and a hinge, among other possible components. 
       FIGS. 2B  and  FIG. 2C  illustrate in top plan and side elevation views the exemplary electronic device and accessory device combination of  FIG. 2A  in a fully closed configuration according to various embodiments of the present disclosure. Fully closed configuration  202  can similarly involve electronic device  100  coupled to accessory device  210 , such as about a coupling component  220 . Again, accessory device  210  can include a plurality of flaps  212  or foldable sections, such that only portions of the whole electronic device display can be exposed or covered, as is known. Further known accessory functions and features may also apply. 
     Alternative configurations for the exemplary electronic device and accessory device combination of  FIG. 2A  are shown in  FIGS. 3A-3C .  FIG. 3A  depicts in side elevation view the electronic device  100  coupled to the accessory device  210  in a keyboard mode configuration  300  that can be particularly suited for using a keyboard. As shown, accessory device  210  can be folded into an arrangement that supports the electronic device  100  in an upright position at a high angle, while a physical keyboard  214  located at or integrated into the accessory device  210  at a readily usable flat position in front of the display  104  on the electronic device  100 .  FIG. 3B  depicts in front perspective view the electronic device  100  coupled to the accessory device  210  in a display mode configuration  302  that can be particularly suited for watching video or other media. As shown, accessory device  210  can be folded into an arrangement that supports the electronic device  100  in an upright position at a medium angle, such that the display  104  on the electronic device  100  can be readily viewed for display watching.  FIG. 3C  depicts in side elevation view the electronic device  100  coupled to the accessory device  210  in a typing mode configuration  304  that can be particularly suited for typing or using a stylus. As shown, accessory device  210  can be folded into an arrangement that supports the electronic device  100  in an lowered position at a low angle, such that the touchscreen function on display  104  can be used for direct typing or stylus use. 
     As will be readily appreciated, accessory device  210  can be coupled to the electronic device  100  at coupling component  220  for each of the various configurations and modes illustrated above, as well as for further configurations and modes not shown for purposes of brevity. The coupling between the accessory device  210  and the electronic device  100  can be magnetic in nature, and can be arranged such that the accessory device  210  can be removed from the electronic device  100  simply by providing enough force to overcome the magnetic coupling and pull the two devices apart. Further, the magnetic coupling at coupling component  220  can remain in place as the accessory device  210  is folded, moved, and repositioned across various different configurations involving the electronic device  100 , such as those illustrated above. In various embodiments, most or all of the coupling force, alignment, and hold experienced between the accessory device  210  and the electronic device  100  can be provided by way of magnets located at or about the two devices. In some embodiments, the alignment and hold provided by magnets only can be proper within tight enough tolerances such that electrical contacts can be maintained between the accessory device  210  and the electronic device  100 , as set forth in detail below. 
     Transitioning to  FIG. 4 , an exemplary magnetically aligned accessory to device connection according to various embodiments of the present disclosure is illustrated in side cross-sectional view. Configuration  400  can include an accessory device  210  to an electronic device  100  at a coupling component  220 . Again, accessory device  210  can be a smart cover, for example, and can include flaps  212  or foldable sections, which can be used to partially or fully cover a display  104  of the electronic device  100 . A coupling component  220  can be integrally formed or otherwise coupled to accessory device  210 , and can include a hinge (not shown) a support member  222  configured to support and hold at fixed positions a plurality of magnets  240  disposed therein. An accessory coupling surface  223  can be disposed proximate the plurality of magnets  240  and can facilitate a magnetic coupling between the accessory device  210  and the electronic device  100 . In various embodiments, the plurality of magnets  240  can form a magnet array having a pattern, as set forth in detail below. 
     Electronic device  100  in configuration  400  can have a plurality of magnets  130  that matches or corresponds to the plurality of magnets  240  at the accessory device  210 . A device coupling surface  103  that is located along outer housing  102  can be disposed proximate the plurality of magnets  130 , and can facilitate a magnetic coupling between the electronic device  100  and the accessory device  210 , such as along accessory coupling surface  223  thereof. The plurality of magnets  130  can similarly form a magnet array having a pattern, as set forth in detail below. In addition, one or more shunts  150  can be situated between the plurality of magnets  130 , such that the overall magnetic flux at one or more surfaces of the electronic device is reduced. One or more carriers  134  can be used to position and/or hold the plurality of magnets  130  at a fixed location within the electronic device  100 . Such carrier(s)  134  can be non-ferrous or non-magnetic. The plurality of magnets  130  and plurality of magnets  240  can have an attraction force  460  therebetween based on their relative alignments and positions with respect to each other. Since attraction force  460  is perpendicular or normal to a general plane or area of contact where accessory coupling surface  223  contacts with device coupling surface  103 , attraction force can be a “Z-component” force acting to couple the accessory device  210  to the electronic device  100 . In various embodiments, this Z-component attraction force  460  can be sufficient to support the weight of the electronic device  100  when only the accessory device  210  is held, or vice-versa. Also, the attraction force  460  can vary depending upon the orientation, position, and alignment of the accessory device  210  with respect to the electronic device  100 , due to the magnet array patterns. 
       FIG. 5A  illustrates in side elevation view an exemplary electronic device having various components for forming a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. Electronic device  500  can be the same or substantially similar to electronic device  100  above in some embodiments. A device coupling surface  503  can provide a region where an associated accessory device (not shown) couples to the electronic device  500 . A first magnet array  535  can be disposed behind and proximate to device coupling surface  503  and can include a first plurality of magnets  530  having different lengths from each other. Some or all of the first plurality of magnets  530  can connect to, contact, or be disposed next to each other, and the first plurality of magnets  530  can be arranged in a first pattern of alternating polarities that forms a straight line, as shown. The first plurality of magnets  530  can include multiple first polarity magnets  531  that form the first pattern of alternating polarities with multiple second polarity magnets  532 . The first polarity can be positive or north, while the second polarity can be negative or south, as will be readily understood. 
     In various embodiments, first magnet array  535  can be discontinuous about an inner point or region, such as at the center. Accordingly, first magnet array  535  may be broken into two or more separate continuous segments of magnets arranged in patterns of alternating polarities. One or more electrical contacts  570  can be disposed proximate the first magnet array  535 . For example, three separate electrical contacts  570  can be located together as a set at a central region of first magnet array  535  such that two separate continuous segments of magnets are formed on both sides of the set of electrical contacts  570 . An insulator region  572  may include a non-conductive material that can be disposed around one or more of the electrical contacts  570  to prevent electrical shorting or other issues. Insulator region  572  can isolate electrical contacts  570  from each other, and also from the housing material at device coupling surface  503  in the event that this is formed from a conductive material, such as aluminum. 
       FIG. 5B  illustrates in side elevation view an exemplary accessory device having various components for forming a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. Accessory device  510  can be the same or substantially similar to accessory device  210  above in some embodiments. Further accessory device  510  can be configured or suitable for coupling with electronic device  500  in  FIG. 5A . An accessory coupling surface  523  can provide a region where an associated electronic device, such as electronic device  500 , couples to the accessory device  510 . A second magnet array  545  can be disposed behind and proximate to accessory coupling surface  523  and can include a second plurality of magnets  540  having different lengths from each other. Some or all of the second plurality of magnets  540  can connect to or abut each other, and the second plurality of magnets  540  can also be arranged in a pattern of alternating polarities that forms a straight line, as shown. The second plurality of magnets  540  can also include multiple first polarity magnets  541  that form a second pattern of alternating polarities with multiple second polarity magnets  542 . As in the case of first and second polarity magnets  531 ,  532  above, the first polarity can be positive or north, while the second polarity can be negative or south. In various embodiments, the second pattern of alternating polarities can correspond to and even be an inverse of the first pattern of alternating polarities. 
     Similar to first magnet array  535  above, second magnet array  545  can also be discontinuous about an inner point or region, such as at the center. Second magnet array  545  may thus be broken into two or more separate continuous segments of magnets arranged in patterns of alternating polarities. One or more pins  574  can be disposed proximate the second magnet array  545 . For example, three separate pins  574  can be located together as a set at a central region of second magnet array  545  such that two separate continuous segments of magnets are formed on both sides of the set of the pins  574 . In various embodiments, the set of pins  574  on the accessory device  510  can correspond to the set of electrical contacts  570  on the electronic device  500 . When the accessory device  510  is properly aligned and coupled to the electronic device  500  as set forth herein, the pins  574  can contact the electrical contacts  570  such that an electrical connection is formed and held between the pins and contacts. In this manner, the plurality of pins  574  and the plurality of electrical contacts combine to provide conduits for electrical connectivity between the accessory device  510  and the electronic device  500 . 
       FIG. 5C  illustrates in side elevation view an exemplary pin to electrical contact arrangement for a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. Arrangement  575  depicts a pin  574  that is contacting an electrical contact  570  to form an electrical connection between an accessory device and an electronic device. Again, an isolator region  572  can electrically isolate the pin  574  and electrical contact  570  arrangement, such that interference or shorting is not experienced with any other pins, electrical contacts, or a device coupling surface  503  that may be conductive. Friction forces between the pin  574  and electrical contact  570  can include an “X-component” friction force  562  and a “Y-component” friction force  564 . These friction forces  562 ,  564  are forces that may be readily overcome by magnetic forces that are adapted to align and to couple the magnetic arrays automatically. This automatic alignment and coupling between first magnet array  535  and second magnet array  545  then also serves to automatically align and couple the accessory device  510  with the electronic device  500 . 
       FIG. 6A  illustrates in side elevation view exemplary magnet arrays having a horizontal offset and resulting horizontal force therebetween according to various embodiments of the present disclosure. Arrangement  600  can include a first magnet array  535  and a second magnet array  545  that are configured to interact with each other. In some embodiments, the first magnet array  535  can be configured to be used within an electronic device, while the second magnet array  545  can be configured to be used within an accessory device that couples to the electronic device. Further, the magnet arrays can each form a pattern of alternating polarities, and the patterns can be inverses of each other. 
     Attraction forces  660  between complementary magnets in each magnet array can pull the second magnet array  545  toward the first magnet array  535 . As shown, however, there can be a horizontal offset between the alignment of the first and second magnet arrays. In such cases, the attraction forces  660  will not exist all along the arrays, but only at those locations where opposite magnets overlap. For some regions, similar magnets will overlap due to the overall horizontal offset. This can then result in a repelling force at those regions. The overall combination of attraction and repelling forces along the magnet arrays results in a horizontal correction force  662 , which can function to align the magnet arrays properly. The magnitude of this horizontal correction force  662  can be a function of the number of different magnets there are in the alternating polarity pattern within each magnet array. With more magnets arranged into instances of alternating polarity along the magnet array, the overall horizontal correction force  662  can increase. This is because the increase in alternating polarities then results in an increase for the number of places where repelling forces are acting against the magnet arrays to force them into the proper alignment. 
       FIG. 6B  illustrates in side cross-sectional view an exemplary magnetically aligned accessory to device connection having a vertical force at a magnet array thereof according to various embodiments of the present disclosure. Arrangement  602  can be identical or substantially similar to configuration  400  above, for example. As shown, a plurality of magnets  130  in electronic device  100  and a plurality of magnets  240  in accessory device  210  can be arranged such that they attract each other and create a coupling between the devices. A vertical force component  664  can largely depend upon how tall the magnets are in the magnet arrays. Where the magnets are tall, the amount of vertical force or corresponding relative movement in that direction can be large. Where the magnets are short, there is a reduced amount of height or space for the magnets to attract and couple to each other. Accordingly, it is preferable to have shorter magnets so as to limit the amount of possible movement or misalignment along the direction of vertical force component  664 . 
       FIG. 7A  illustrates in side elevation view an exemplary electronic device having a full-length magnet array for forming a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. Electronic device  700  can be similar to electronic device  500  above in some embodiments. One or more electrical contacts  770  can be disposed within a magnet array having a plurality of individual magnets  730 , which can be disposed behind and proximate to a surface of electronic device  700 . Electronic device  700  can be full-sized, such that the magnets  730  can form a full-length magnet array. Again, the magnet array can include a pattern of alternating polarities. 
       FIG. 7B  illustrates in side elevation view the full-length magnet array of  FIG. 7A  according to various embodiments of the present disclosure. Plurality of magnets  730  form a full-length magnet array  735  when taken in their entirety. Overall, magnet array  735  can be asymmetric about an inner point, such as a center point. This can result in an inability for the magnet array  735  to couple in a properly aligned manner with a corresponding magnet array when the magnet array  735  is reversed or flipped. A shortened or truncated portion  736  of magnet array  735  can also be asymmetric about an inner or central point. In various embodiments, the overall magnet array  735  can include an inner portion  737  that also has alternating polarities for multiple magnets. 
     Unlike overall magnet array  735  and truncated portion  736 , however, inner portion  737  can be symmetric about an inner or central point. In this particular illustrative example, inner portion  737  of magnet array  735  can have four magnets or magnetic sections that are symmetric about a central point. An outer portion for magnet array  735  can include all portions of the magnet array that are not inner portion  737 , or may simply include those portions that are within truncated portion  736  and are not inner portion  737 . In such instances, the outer portion can include at least four additional magnets or magnetic sections that are asymmetric about the central point. Of course, 5, 8, 10, or more magnets or magnetic sections may also be included. 
     By having an asymmetric pattern about an inner or central point, the overall magnet array patterns work to encourage and better support orientations, alignments, and couplings that are proper according to device design and aesthetics. Where the accessory device is reversed or flipped in orientation, certain alignments may still result in some magnetic attraction force between the accessory and electronic device, but such attraction forces will be far lower than a normalized attraction force that is achievable only at a single intended orientation and alignment of the accessory and electronic device with each other. Further, the magnet array patterns can be designed such that even where some attraction force exists and can weakly hold or couple the accessory to the electronic device in a reversed or flipped orientation, the actual alignment can be slightly but noticeably offset. Thus, there can be both a reduced amount of attraction force and also an obvious offset between the devices for any coupling using an improper orientation, such that a user would be readily aware that something is not right. 
     Due to the asymmetric matching magnet patterns on both the accessory and the electronic device, the intended orientation and alignment of the two devices can result in the normalized attraction force that represents the maximum amount of magnetic attraction force achievable between the two magnet arrays in the respective devices. At other orientations and/or alignments, a lower magnetic attraction force may be observed between the two magnet arrays. At still other orientations and/or alignments, a magnetic repelling force may be observed. Regardless of the orientation and/or alignment, only the proper or intended orientation and alignment results in a magnetic attraction force that is even close to the maximum possible or normalized attraction force. In various embodiments, every other orientation and alignment results in either a repelling force, or an attraction force that is no greater than one-half of the normalized attraction force. In some embodiments, no greater than one-third of the normalized attraction force can be achieved at any alignment and/or orientation that is not the proper or intended orientation and alignment. 
       FIG. 7C  illustrates in side elevation view an exemplary series of electronic devices having varying length magnet arrays for forming magnetically aligned accessory to device connections according to various embodiments of the present disclosure. Electronic device  700  can be a full-size electronic device, such that it has a full-length magnet array disposed therewithin. Electronic device  701  can be a mid-sized electronic device, such that it has a mid-sized or truncated magnet array disposed therewith. Electronic device  702  can be a small sized electronic device, such that it has a short magnet array disposed therewithin. As can be seen in  FIG. 7C , the pattern for each magnet array can be the same with respect to the center or other inner point of the magnet array. The only differences between magnet arrays then can be with respect to their lengths, with shorter magnet arrays simply not having additional magnets toward the ends of their arrays. With respect to the center and nearby regions of each magnet array, these portions can all be identical with respect to the magnets that are there. 
     In essence, the longer magnet array patterns are extensions of the shorter magnet array patterns, with the portions that match the shorter lengths having the same pattern for those portions or lengths. With the patterns of the different sized magnet arrays being arranged in this manner, there can still be significant functionality for magnetic coupling and electrical connection formation and holding even where different sized electronic devices and accessory devices are used, since at least the central portions of the magnet arrays for each such device will still match and be able to facilitate some form of alignment and coupling. In the event that the longer magnet array patterns are used by both devices and can be taken advantage of, then greater amounts of magnetic attraction can be observed. 
     Although it can be useful for increasing magnetic forces and conserving space, various issues can be observed by placing multiple magnets in contact with or in close proximity with each other when forming a magnetic array.  FIG. 8A  illustrates in front elevation view an exemplary magnetic arrangement for a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. Magnetic arrangement  830  can include first polarity magnets  831  and second polarity magnets  832  arranged into a pattern of alternating polarities. In particular, magnets  831  and  832  are arranged such that they are either in contact or are in close proximity with each other. 
       FIG. 8B  illustrates in side elevation view an exemplary magnetic flux density field for a portion of the magnetic arrangement of  FIG. 8A . Magnetic arrangement portion  836  can include a first polarity magnet  831  that is in contact or close proximity with one or more second polarity magnets (not shown). As a result, a relatively large magnetic flux density field  837  can be generated, particular at the locations where first polarity magnet  831  contacts or is next to second polarity magnet(s). Having this large magnetic flux density field  837  can be helpful for added magnetic strength, but can also be problematic with respect to other items. For example, credit cards and/or other magnetic components located outside of the respective electronic device, such as at a surface thereof, can be affected by such a large magnetic flux. In some cases, such as large magnetic flux can erase or otherwise destroy data on magnetic stripe cards. 
       FIG. 8C  illustrates in side elevation view an exemplary shunt and magnet arrangement for the portion of the partial magnetic arrangement of  FIG. 8B  according to various embodiments of the present disclosure. Magnetic arrangement  838  can again include a first polarity magnet  831  that may be in contact with or in close proximity to one or more second polarity magnets (not shown), such that a large magnetic flux density field might be generated. A carrier  834  can be located at a back side of first polarity magnet  831 , such as to hold the magnet at a fixed position within its respective device. In addition, a shunt  850  can be located at or about a front surface of the first polarity magnet  831 . Shunt  850  can be formed from a ferrous or other suitable material in order to block or shield a magnetic flux density field from extending away from first polarity magnet  831  to an exterior surface of its respective device. In this manner, magnets within a magnet array can be placed in contact or close proximity to each other to create higher magnetic flux density fields, and these higher fields are still effectively shielded from affecting other items outside of the respective device. Although not shown, a shunt  850  may also be located at or about a back surface of magnet  831  as well. 
       FIG. 8D  illustrates in side elevation view an alternative exemplary partial magnetic arrangement for a magnetically aligned accessory to device connection according to various embodiments of the present disclosure. Magnetic arrangement  838  can be similar to magnetic arrangement  830  above in that it may include first polarity magnets  831  and second polarity magnets  832  arranged into a pattern of alternating polarities. Also similar, magnets  831  and  832  are arranged such that they are either in contact or are in close proximity with each other. In addition, a plurality of shunts  850  can be positioned in front of the magnets  831  and  832 , and in particular can be positioned where the magnets meet. In this manner, the large amounts of magnetic flux that can be generated at the intersection of differing polarity magnets can be effectively shielded from causing significant problems outside of the overall device. Again, shunts may also be located behind the magnets  831  and  832  as well, if desired. 
       FIG. 9A  illustrates in side cross-sectional view an exemplary magnetically connected accessory to device arrangement using a convex magnet according to various embodiments of the present disclosure. Arrangement  901  can be similar to arrangements  602  shown in  FIG. 6B and 838  shown in  FIG. 8C , with magnets  931  and shunts  950  belonging to the electronic device, and magnets  940  belonging to the accessory device. As shown, one or more of magnets  931  can have a mating surface  937  that is convex in nature. In such arrangements, it can be preferable to shield or otherwise control magnetic flux at the ends of the magnets by using shunts  950 , such as by that which is shown in  FIGS. 8C and 8D . Unfortunately, the use of shunts at the ends of the magnets can result in an effective loss of force or utility across a full array of alternating magnets. Accordingly, other ways of controlling flux at the ends of the magnets may allow for a more robust use of a full magnet array while still allowing the ends of alternating magnets to abut or be relatively close to each other. 
       FIG. 9B  illustrates in side cross-sectional view an exemplary magnetically connected accessory to device arrangement using a thin concave magnet according to various embodiments of the present disclosure. Arrangement  902  can be similar to arrangement  901  above, with a notable exception of the magnet shape in the electronic device. As shown, one or more of magnets  932  can have a mating surface  938  that is concave in nature. In such arrangements, the specific shape of the magnet at concave mating surface  938  serves to control magnetic flux at the ends of the magnets without the use of shunts, and without spacing magnets apart. In some embodiments, magnets  932  in the magnet array within the electronic device can abut each other. Magnets  932  can be relatively thin and can be located close to the inner surface of the device within which they are located. 
       FIG. 9C  illustrates in side cross-sectional view an exemplary magnetically connected accessory to device arrangement using a thick concave magnet according to various embodiments of the present disclosure. Arrangement  903  can be similar to arrangements  901  and  902  above, with a notable exception of the magnet shape and location in the electronic device. As shown, one or more of magnets  933  can also have a mating surface that is concave in nature. Again, the specific shape of the magnet at concave mating surface  938  serves to control magnetic flux at the ends of the magnets without the use of shunts, and without spacing magnets apart, such as where magnets in the array abut each other. Unlike the relatively thin magnets  932  in arrangement  902 , however, magnets  933  in arrangement  903  can be relatively thick and can be located at a distance  939  that is relatively farther away from the inner surface of the device within which they are located. As will be readily appreciated, a magnet that is thicker can be spaced farther away from a mating magnet  940  and still generate more magnetic attraction or force than a thinner magnet that is spaced closer to the mating magnet  940 . 
     In addition to controlling magnetic flux at the ends of each magnet, the specific shape of each magnet can be used for specific control of the amount and location of magnetic force exerted by that magnet. More complex magnet shapes can be used to exert the exact amount of force desired. Such complex magnet shapes can help to facilitate alignment control of one magnet array onto another in both X and Y (lateral and vertical) directions, if desired. 
       FIG. 10  illustrates in front perspective view an exemplary magnet array portion having short and long concave magnets according to various embodiments of the present disclosure. Magnet array portion  1035  can be a portion of a longer full-length magnet array, such as that which is shown in magnet array  735  above, for example. Magnet array portion  1035  can include magnets of alternating polarities as described above, although not illustrated here for purposes of simplicity. Magnet array portion  1035  can include multiple short magnets  1036  and multiple long magnets  1037 , both of which can include concave mating surfaces, and both of which can include one or both polarities. As shown, the shape of short magnets  1036  can be relatively simple, and can be substantially similar to magnets  932  or  933  depicted above. The shape of long magnets  1037  can be more complex, and can include thinner or tapered ends, as well as a concave shaped center region  1038 . This more complex shape can provide a desired amount of magnetic force while still limiting the amount of flux at the ends of magnets  1037 . 
       FIG. 11  illustrates in side elevation views various exemplary magnet array displacements for an exemplary magnetically connected accessory to an electronic device arrangement according to various embodiments of the present disclosure. Arrangement  1181  shows magnet array portion  1130  positioned with respect to several key elements on a corresponding mating magnet array. Although only a portion of a magnet array is shown for purposed of illustration, it will be appreciated that the full magnet array may include additional magnets that extend further from one or both ends of magnet array portion  1130 . Magnet array portion  1130 , which can be located on an accessory device, for example, can include one or more pins  1174  at a central region, as well as a given magnet  1131  and given magnet combination  1133 . The pins  1174  can be designed to align with and contact electrical contacts  1170 , while given magnet  1131  can be designed to align with corresponding given magnet  1141 , and given magnet combination  1133  can be designed to align with and corresponding given magnet combination  1143 . As shown in arrangement  1181 , the entire magnet array portion  1130  has an offset or displacement to the left of where it should be aligned with respect to the corresponding mating array. It will appreciated that while only several key elements have been identified on both magnet array portions, the entire magnet array portion is similarly offset by the same displacement amount. This displacement can be a given amount such that there is some magnetic attraction between the offset magnetic elements in both arrays, but not the optimal or maximum magnetic attraction that would exist for an accurate alignment of both magnet arrays. At this arrangement  1181 , the magnet arrays will attract and couple to each other, but the amount of offset will clearly indicate that an optimal alignment between the magnet arrays (and corresponding accessory and electronic devices) is not taking place. As one example, this displacement to the left can be on the order of about 10-30 mm. Of course, other offset dimensions or amounts are also possible. 
     Arrangement  1182  depicts magnet array portion  1130  that is optimally positioned with respect to the key elements on the corresponding mating magnet array. That is, given magnet  1131  aligns directly with corresponding given magnet  1141 , pins  1174  align directly with electrical contacts  1170 , and given magnet combination  1133  aligns directly with given magnet combination  1143 . At this accurate alignment, the mating magnet arrays experience the maximum possible magnetic attraction force, as all magnetic elements are aligned as designed. Arrangement  1183  is similar to arrangement  1181 , only with the magnet array portion  1130  having an offset or displacement to the right of where it should be aligned with respect to the corresponding mating array. Again, this displacement can be a given amount such that there is some magnetic attraction between the offset magnetic elements in both arrays, but not the optimal or maximum magnetic attraction that would exist for an accurate alignment of both magnet arrays, and the amount of offset will clearly indicate that an optimal alignment between the magnet arrays is not taking place. As one example, this displacement to the left can be on the order of about 10-30 mm. Of course, other offset dimensions or amounts are also possible. 
       FIG. 12  illustrates a graph of forces based on displacement for an exemplary magnetically connected accessory to an electronic device arrangement according to various embodiments of the present disclosure. The magnetic force can be measured in Newtons, while the displacement can be measured in mm from optimal. Graphed line  1201  can represent F y , which can be the amount of attraction force between the mating magnet arrays. Graphed line  1202  can represent F x , which can be the amount of lateral force experienced in the mating magnet arrays. As will be readily appreciated, the mating magnet arrays will tend to move laterally relative to each other to couple at locations where F x  is zero. Each of displacement positions  1281 ,  1282 , and  1283  can correspond to the previous arrangements  1181 ,  1182 ,  1183 . As can be seen, the lateral force F x  is zero at each of displacement locations  1281 ,  1282 ,  1283 , such that these displacements reflect positions or offsets where the magnet arrays naturally move laterally relative to each other for coupling. Of the three displacement positions, clearly optimal position  1282  at zero displacement has the greatest magnetic attraction force F y , since this is the position where all magnetic elements in both arrays are properly aligned with a corresponding proper mating magnetic element. Again, while the magnetic arrays will attract and couple at displacement locations or positions  1281  and  1283 , the magnetic attraction force F y  will be noticeably weaker at these locations, and the amount of lateral offset will be noticeable. Other offset or displacement locations may also exist, with the magnetic attraction force being even weaker and the amount of lateral offset being even greater for such other locations. 
       FIG. 13  illustrates a flowchart of an exemplary method for facilitating a magnetically aligned accessory to electronic device connection according to various embodiments of the present disclosure. Method  1300  can include process steps that can be performed entirely by a maker of an accessory or electronic device, entirely by a user of the accessory and electronic device, or entirely a processor configured to facilitate the described use of the accessory and electronic device, among other possibilities. At a first process step  1302 , a first magnet array can be positioned proximate to or at a coupling surface of an electronic device. As noted above, the first magnet array can include a first plurality of magnets arranged in a first pattern of alternating polarities. Among other possible arrangements, the first pattern can have an inner portion of alternating polarities that is symmetric about an inner point and an outer portion of alternating pluralities that is asymmetric about the inner point. Further details set forth above regarding the first pattern may also be applied. In some embodiments, the first magnet array can be positioned by being installed or placed within the electronic device, such as by manual or automated assembly. In some embodiments, the first magnet array can be positioned due to handling by a user of the electronic device. 
     At the next process step  1304 , a second magnet array can be positioned proximate to or at a coupling surface of an accessory or accessory device. The second magnet array can include a second plurality of magnets arranged in a second pattern of alternating polarities that corresponds to the first pattern of alternating polarities. Similarly, the second magnet array can be positioned by being installed or placed within the accessory device, or can be positioned due to handling by a user of the accessory device. At process step  1306 , a plurality of electrical contacts can be provided proximate the first magnet array at the coupling surface of the electronic device, and at process step  1308 , a plurality of pins can be provided proximate the second magnet array at the coupling surface of the accessory device. Similar to the foregoing, these electrical contacts and pins can be provided by being installed or placed at the electronic device and the accessory device respectively, or can be provided due to handling and resulting exposure or arrangement by a user of these devices. 
     At a subsequent process step  1310 , an arrangement can be facilitated such that the first magnetic array and the second magnetic array are automatically coupled at a particular alignment under certain conditions. In particular, the facilitated arrangement results in the second magnet array automatically coupling to the first magnet array with a normalized attraction force at a specifically intended orientation and alignment when the first magnet array is placed near the second magnet array at a general orientation and alignment that is similar to the specific orientation and alignment. In various embodiments, the automatic coupling results in the accessory device being properly oriented and aligned with the associated electronic device to specifically tight tolerances. In particular, the tolerances are tight enough such that the plurality of pins always or almost always aligns with and contacts the plurality of electrical contacts to provide conduits for electrical connectivity between the accessory device and the electronic device as a result of the automatic coupling. Again, this facilitated arrangement can be performed by a maker or a user of the electronic device and accessory device. 
     For the foregoing flowchart, it will be readily appreciated that not every step provided is always necessary, and that further steps not set forth herein may also be included. For example, added steps that involve alternative couplings at reduced attraction forces for offset distances and/or reversed configurations may be added. Also, steps that provide more detail with respect to the magnet arrays and patterns may also be added. Furthermore, the exact order of steps may be altered as desired, and some steps may be performed simultaneously. For example, steps  902  and  904  may be performed together or in reverse order. Simultaneous performance of all steps may also be possible in some instances. 
       FIG. 14  illustrates in block diagram format an exemplary computing device  1400  that can be used to implement the various components and techniques described herein, according to some embodiments. In particular, the detailed view illustrates various components that can be included in the electronic device  100  illustrated in  FIGS. 1A and 1B . Such components can include various magnetically aligned accessory to device connection items, as well as a processor that facilitates electrical conductivity or communications between the electronic device  100  and an accessory when the electronic device and accessory are magnetically aligned and coupled, such as by way of that which is set forth in the foregoing examples. As shown in  FIG. 14 , the computing device  1400  can include a processor  1402  that represents a microprocessor or controller for controlling the overall operation of computing device  1400 . The computing device  1400  can also include a user input device  1408  that allows a user of the computing device  1400  to interact with the computing device  1400 . For example, the user input device  1408  can take a variety of forms, such as a button, keypad, dial, touch screen, audio input interface, visual/image capture input interface, input in the form of other sensor data, etc. Still further, the computing device  1400  can include a display  1410  (screen display) that can be controlled by the processor  1402  to display information to the user (for example, a movie or other AV or media content). A data bus  1416  can facilitate data transfer between at least a storage device  1440 , the processor  1402 , and a controller  1413 . The controller  1413  can be used to interface with and control different equipment through and equipment control bus  1414 . The computing device  1400  can also include a network/bus interface  1411  that couples to a data link  1412 . In the case of a wireless connection, the network/bus interface  1411  can include a wireless transceiver. 
     The computing device  1400  can also include a storage device  1440 , which can comprise a single disk or a plurality of disks (e.g., hard drives), and includes a storage management module that manages one or more partitions within the storage device  1440 . In some embodiments, storage device  1440  can include flash memory, semiconductor (solid state) memory or the like. The computing device  1400  can also include a Random Access Memory (RAM)  1420  and a Read-Only Memory (ROM)  1422 . The ROM  1422  can store programs, utilities or processes to be executed in a non-volatile manner. The RAM  1420  can provide volatile data storage, and stores instructions related to the operation of the computing device  1400 . 
     The various aspects, embodiments, implementations or features of the described embodiments can be used separately or in any combination. Various aspects of the described embodiments can be implemented by software, hardware or a combination of hardware and software. The described embodiments can also be embodied as computer readable code on a computer readable medium. The computer readable medium is any data storage device that can store data which can thereafter be read by a computer system. Examples of the computer readable medium include read-only memory, random-access memory, CD-ROMs, DVDs, magnetic tape, hard disk drives, solid state drives, and optical data storage devices. The computer readable medium can also be distributed over network-coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. 
     The foregoing description, for purposes of explanation, uses specific nomenclature to provide a thorough understanding of the described embodiments. However, it will be apparent to one skilled in the art that the specific details are not required in order to practice the described embodiments. Thus, the foregoing descriptions of specific embodiments are presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the described embodiments to the precise forms disclosed. It will be apparent to one of ordinary skill in the art that many modifications and variations are possible in view of the above teachings.