Patent Grant
9954571
The described embodiments generally relate to portable electronic devices. More particularly, the present embodiments describe various releasable attachment techniques well suited for portable electronic devices.
Recent advances in portable computing includes the introduction of hand held electronic devices and computing platforms along the lines of the iPad™ tablet manufactured by Apple Inc. of Cupertino, Calif. These handheld computing devices can be configured such that a substantial portion of the electronic device takes the form of a display assembly used for presenting visual content. The display assembly generally includes an active display area configured to present visual content and a top protective layer used to provide protection against external effects, such as would be expected during normal use. However, in some cases, additional protection can be afforded both the tablet device and display assembly using a separate accessory device that takes the form of a protective cover attached to the tablet device. However, due to the relatively large size of the display in relation to the tablet device as a whole, little space is available for attaching the protective cover to the tablet device.
Moreover, conventional attachment mechanisms such as mechanical fasteners, clasps, and so forth typically require an externally accessible attaching feature on the electronic device to mate with a corresponding attaching feature on the accessory device. This arrangement can detract from the overall look and feel of the handheld computing device as well as add unwanted weight and complexity as well as degrade the appearance of the hand held computing device.
Therefore a cover that provides protection to a tablet device that is at least aesthetically pleasing and easy to attach/detach is desired.
This paper describes various embodiments that relate to a system, method, and apparatus for releasably attaching an accessory to an electronic device.
A protective cover is described. The protective cover can be used with an electronic device such as a tablet device. The protective cover can include at least a segmented flap comprising a plurality of independently foldable segments separated from each other by a folding region. The segmented flap includes a top layer formed of a layer of protective finishing material having a first surface exposed to an external environment and a second surface opposite the first surface, and a laminate structure. In the described embodiment, the laminate structure includes a flexible net backing layer having a size and shape in accordance with the protective top layer. The layer of flexible net backing is adhered to the second surface of the protective top layer, the net backing layer provides resilient support for the protective top layer. The laminate structure of the protective cover also includes a support panel associated with and having a size and shape in accordance with each of the independently foldable segments separated from each other by a gap corresponding to the folding region, and a stiffener ring that is attached to and extends around most of an exterior perimeter of the protective top layer, the stiffener ring providing resilient support for the protective cover. The protective cover also includes a segmented bottom layer, the bottom layer including a layer of micro-fiber material segmented in a manner in accordance with the segmented flap.
In a particular embodiment of the protective cover, an integrated hinge is formed of a hinge tail in the form of a continuation of the layer of finishing material that wraps around an attachment mechanism used to releasably attach the protective cover to a host device such as the tablet device.
In another embodiment a consumer electronic product is described. The consumer electronic product includes at least an electronic device that, in turn, includes, a housing having side walls and a front facing opening, a display disposed in the front facing opening that includes a protective top layer, and a first magnetic attachment mechanism disposed at a first side wall of the housing. The consumer electronic product further includes a protective cover that includes a segmented flap having a plurality of independently foldable segments separated from each other by a folding region. In the described embodiment, the segmented flap includes a protective top layer formed of a layer of protective finishing material having a first surface exposed to an external environment and a second surface opposite the first surface. The protective cover also includes an integrated flexible hinge portion having a second magnetic attachment mechanism that cooperates with the first magnetic attachment mechanism to magnetically attach the protective cover and the electronic device. The hinge portion also includes a hinge tail formed of a continuation of the layer of protective finishing material that wraps around a second magnetic attachment mechanism to provide an appearance of continuity between the segmented flap and the integrated hinge portion.
In yet another embodiment, a consumer system includes a tablet device and a cover. The tablet device includes a housing having a front opening, a display assembly disposed within the front opening that includes a display, and a top protective layer disposed adjacent to the display. The tablet device also includes a plurality of sensors configured to detect a corresponding stimulus, and a magnetic attachment unit disposed within and secured to an inside side wall of the housing. In the described embodiment the cover includes a flap formed of a first material and having a size and shape in accordance with the display, an integral hinge assembly that includes a flexible hinge, the flexible hinge formed of a continuous layer of the first material of the flap, and a hinge magnetic attachment unit configured to activate the magnetic attachment unit causing the tablet device and the cover to magnetically attach to each other.
A method of producing a protective cover that includes a segmented flap having a plurality of independently foldable segment separated by a adjacent folding region, comprising is described. The method is carried out by providing a layer of protective finishing material having a first surface exposed to an external environment and a second surface opposite the first surface, attaching a net backing material to the second surface of the layer of protective finishing material, the net backing material having a size and shape in accordance with the layer of protective finishing material the net backing layer providing resilient support for the protective cover, attaching a support panel associated with and having a size and shape in accordance with each of the independently foldable segments separated from each other by a gap corresponding to the folding region between the net backing material and a resilient base layer, and attaching at bottom layer to the resilient base layer, the bottom layer conforming to the segments.
In a particular embodiment, an integrated hinge is formed using a continuation of the layer of protective finishing material that wraps around a magnetic attachment mechanism used to attach the protective cover to a host device.
Other aspects and advantages of the invention 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.
The invention will be readily understood by the following detailed description in conjunction with the accompanying drawings, wherein like reference numerals designate like structural elements, and in which:
Reference will now be made in detail to representative embodiments illustrated in the accompanying drawings. It should be understood that the following descriptions are not intended to limit the embodiments to one preferred embodiment. To the contrary, it is intended to cover alternatives, modifications, and equivalents as can be included within the spirit and scope of the described embodiments as defined by the appended claims.
The following description relates in general to a mechanism that can be used to attach together at least two suitably configured objects. In one embodiment, this can be accomplished without the use of conventional fasteners. Each of the objects can include an attachment feature arranged to provide a magnetic field having appropriate properties. When the attachment features are brought into proximity with each other, the magnetic fields can cooperatively interact based upon their respective properties, result in the objects magnetically attaching to each other in a desired and repeatable manner. For example, due at least in part to the cooperative nature of the interaction of the magnetic fields, the objects can attach to each other in a pre-determined position and relative orientation without external intervention. For example, the cooperative magnetic interaction can result in the objects self-aligning and self-centering in a desired orientation.
The objects can remain in the magnetically attached state if and until a releasing force of sufficient magnitude is applied that overcomes the overall net attractive magnetic force. In some cases, however, it can be desirable to detach the objects serially (along the lines of a zipper) in which case, the releasing force only need be of sufficient magnitude to overcome the net magnetic attractive force of one pair of magnetic elements at a time. Connectors such as mechanical fasteners are not required to attach the objects together. Furthermore, to prevent undue interference to the magnetic interaction between the magnetic attachment features, at least a portion of the objects in the vicinity of the magnetic attachment features can be formed of magnetically inactive materials such as plastic or non-ferrous metals such as aluminum or non-magnetic stainless steel.
The objects can take many forms and perform many functions. When magnetically attached to each other, the objects can communicate and interact with each other to form a cooperative system. The cooperating system can perform operations and provide functions that cannot be provided by the separate objects individually. In another embodiment, at least one device can be used as an accessory device. The accessory device can be magnetically attached to at least one electronic device. The accessory device can provide services and functions that can be used to enhance the operability of the electronic device(s). For example, the accessory device can take the form of a protective cover that can be magnetically attached to the electronic device. The protective cover can provide protection to certain aspects (such as a display) of the electronic device while enhancing the overall look and feel of the electronic device. The magnetic attachment mechanism used to magnetically attach the accessory and the electronic device can assure that the cover can only attach to the electronic device in a specific orientation. Moreover, the magnetic attachment mechanism can also assure proper alignment and positioning of the protective cover and the electronic device.
The protective cover can include at least a flexible hinge portion. The flexible hinge portion can include a flexible body, or tail, connected to a magnetic attachment mechanism that can include a plurality of magnets. A magnetic field provided by the magnets in the magnetic attachment mechanism can interact with a corresponding magnetic field provided by magnets in the electronic device. In this way, the hinge portion can be pivotally connected to the electronic device using only the magnets. In one embodiment, the protective cover can include a flap that is connected to the flexible hinge portion. The flap can therefore be smoothly rotated along a pivot line formed by the flexible hinge portion. When magnetically coupled to the tablet device, the smooth rotation of the flap about the pivot line can bring the flap in substantial contact with the display in a fully closed position. The flap can also be smoothly rotated about the pivot line to reveal most or all of the display. In one embodiment, the flap can be segmented by which it is meant that the flap can be divided into distinct portions that can fold and bend with respect to each other as well as the tablet device more specifically in some cases, the display. In this way, the segmented flap affords an additional option of revealing only specific portions of the display by folding individual segments to reveal a corresponding portion of the display while other segments remain in contact and therefore obscuring the display.
In some embodiments, the flap can include a variety of magnets that can be used to form a number of structures well suited for use with the electronic device. For example, the flap can include a first plurality of magnets linearly arrayed along a first edge (i.e., first edge magnets) and a second plurality of magnets positioned in corresponding locations along a second edge opposite the first edge (second edge magnets). In a particular embodiment, corresponding ones of the first and second edge magnets have opposite polarities. In this way, when the first edge and the second edge are brought into spatial proximity to each other, magnetic fields of the first and second edge magnets interact with each other to form a magnetic attractive force that causes the first and second edges to attach to each other. In this way, the flap can form a structure that can be used to enhance the functionality of the cover with regards to the electronic device.
For example, if the flap is constructed to have three independently foldable segments (referred to as segment A, segment B, and segment C) where segment A is attached to the foldable hinge at the first edge having the first edge magnets and segment C is opposite segment A that is defined in part by the second edge having the second edge magnets, a triangular structure ABC can be formed when the first edge magnets and the second edge magnets attract each other when segment A is within proximity to segment C. It should be noted that the properties of the triangular structure ABC can vary in accordance with the relative sizes of the segments A, B, and C. In other words, is segments A, B, and C are about equal in width, then triangular structure ABC can take the form of an equilateral triangle, whereas if two segments are about of equal width, then the triangular structure ABC can take on the shape of an isosceles triangle. It should be noted that in some embodiments, the triangular structure can be used to present the display at an angle of about 5-15° in a keyboard mode well suited for using a keyboard presented at the display or about 65-80° in a movie mode well suited for viewing visual content presented at the display at a comfortable viewing angle.
In one embodiment, the flap can include electronic circuits or other elements (passive or active) that can cooperate with electronic elements in the electronic device. As part of that cooperation, signals can be passed between the protective cover and the electronic device that can, for example, be used to modify operations of the electronic device, operations of electronic circuits or elements of the protective cover, and so forth. As an example, the electronic device can include one or more magnetically sensitive circuits such as a Hall Effect sensor and as such can detect the presence of a magnetic field. The Hall Effect sensor can respond to properties of a magnetic field (such as the presence of magnetic field, a magnetic field strength, polarity, etc.) by generating a signal. The signal can be used to alter an operating state of the electronic device.
Accordingly, the protective cover can include a magnetic element, or elements, such as a permanent magnet having a magnetic field that can be detected the Hall Effect sensor to generate the signal. The magnet(s) can be positioned in the protective cover in various locations in the flap that can be detected by the magnetic sensors when the magnets are proximate to the corresponding magnetic sensor. The magnetic sensors can send information to a processor in the electronic device that can evaluate the signals from the multiple sensors. The evaluation of the signals from the sensors can provide the processor with information that can be used to determine a spatial relationship between the flap and the electronic device or even if the protective cover is attached to the electronic device. For example, the processor can use the signals from the sensors to indicate a relative position of the flap to the electronic device and in response alter an operating state of the electronic device accordingly. For example, when the signals indicate that the flap is fully closed (i.e.; both magnetic sensors detect a corresponding magnetic field), then the processor can prevent the display from presenting visual content. On the other hand, if one sensor detects the corresponding magnetic field and the other sensor does not detect the corresponding magnetic field, then the processor can use this information to determine that only a portion of the display is viewable (that portion of the display corresponding to the portion of the flap having the magnet that is not detectable by the sensor). In this situation, the processor can cause the display to present visual content at only the viewable portion of the display.
These and other embodiments are discussed below with reference to
Electronic device 12 can take many forms. For example, electronic device 12 can take the form of a portable electronic device. In some examples, the portable electronic device can include housing 15. Housing 15 can enclose and provide support for components of the portable electronic device. Housing 15 can also provide support for at least a large and prominent display occupying a substantial portion of a front face of the portable electronic device. The display can be used to present visual content. The visual content can include still images, visual, textual data, as well as graphical data that can include icons used as part of a graphical user interface, or GUI.
In some cases, at least a portion of the display can be touch sensitive. By touch sensitive it is meant that during a touch event, an object (such as a finger, stylus, and so on) can be placed in contact with or in proximity to an upper surface of the display. The particulars of the touch event (location, pressure, duration, and so forth) can be used to provide information to the portable electronic device for processing. In some embodiments, in addition to or in place of information being provided to the portable electronic device, information can be provided by the portable electronic device in a tactile manner using, for example, haptic actuators. It should be appreciated however that this configuration is by way of example and not by way of limitation as the electronic device can be widely varied. In one example, the portable electronic device is a tablet device such as, for example, the iPad™ manufactured by Apple Inc. of Cupertino, Calif.
Article 10 can be widely varied and can take many forms such as, for example, an accessory or accoutrement of electronic device 12. As an accessory, article 10 can be configured as a cover, a stand, a dock, a hanger, an input/output device and so on. In a particularly useful form, article 10 can take the form of a protective cover that can include a member, such as a flap, that can be positioned over the display of the portable electronic device. Like the electronic device 12, the article 10 can also include housing 17 that can enclose and provide support for components of the article 10.
Either one or both of article 10 and electronic device 12 can include attachment features. For example, article 10 can include attachment system 13 and electronic device 12 can include corresponding attachment system 14. Attachment system 13 can cooperate with corresponding attachment system 14 to attach article 10 and electronic device 12 in a releasable manner. When attached to each other, article 10 and electronic device 12 can operate as a single operating unit. On the other hand, in the detached mode, article 10 and electronic device 12 can act separately, and if desired, as two individual parts. Attachment systems 13 and 14 can be configured in such a way that article 10 and electronic device 12 can attach to each other in a desired and repeatable manner. In other words, attachment systems 13 and 14 can repeatedly align article 10 and electronic device 12 together such that they are consistently in a pre-determined position relative to one another.
The attachment features can be widely varied. The attachment can be provided by various types of couplings including mechanical, electrical, static, magnetic, frictional, and/or the like. In one embodiment, the attachment cannot be seen from the outside of the article and/or electronic device. For example, the article and device can not include external visible attachment features that adversely affect the look and feel or ornamental appearance (e.g., snaps, latches, etc.), but rather attachment features that cannot be seen from the outside of the article or device and thus do not affect the look and feel or ornamental appearance of the article or device. By way of example, the attachment features can be provided by attraction surfaces that do not disturb the external surfaces of the article or device. In one embodiment, at least a portion of the attachment features utilize magnetic attraction to provide some or all of the attaching force.
The attachment systems can include one or more attachment features. If multiple features are used, the manner in which they secure can be the same or different. For example, in one implementation, a first attachment feature utilizes a first attachment mechanism while a second attachment feature utilizes a second attachment mechanism that is different than the first attachment mechanism. For example, the first attachment mechanism can utilize a friction coupling while the second attachment means can utilize magnetism. For example, the first and second attachment mechanisms can be provided by magnets. Although, the attachment mechanisms can be similar it should be appreciated that the configuration of the mechanisms can be different depending on the needs of the system. Further, any number and configuration of attachment mechanisms can be used.
In the illustrated embodiment, the attachment systems 13 and 14 each include at least a first set of corresponding attachment features 13a/14a and a second set of corresponding attachment features 13b/14b. Attachment feature 13a can cooperate with corresponding attachment feature 14a to attach article 10 and electronic device in a releasable manner. In one particular implementation this is accomplished with magnetic attraction. Further, attachment feature 13b can cooperate with corresponding attachment feature 14b to further attach article 10 and electronic device in a releasable manner. In one particular implementation this is accomplished with magnetic attraction. By way of example, attachment features 13a/14a can be provided at a first location while attachment features 13b/14b can be provided at a second location.
In a specific example, attachment feature 14a can, in cooperation with attachment feature 13a, secure electronic device 12 to article 10. In another example, attachment feature 13b can secure article 10 to the electronic device 12 using attachment feature 14b. It should be noted that the attachment systems 13 and 14 of this example can be separate or they can cooperate together to produce the attachment. If they cooperate, attachment features 14a and 14b correspond to or mate with one or more attachment features 13a and 13b. In any case, the attachment features in any of these examples can be accomplished through mechanical, static, suction, magnetic attachment and/or the like.
The placement of the attachment systems and the attachment features within the attachment systems can be widely varied. Regarding electronic device 12, attachment system 14 can be placed on front, back, top, bottom, and/or sides. Attachment features 14a and 14b can be placed any location within attachment system 14. Accordingly, attachment features 14a and 14b can be placed anywhere relative to the housing and/or the display. In one example, the attachment features 14a and 14b can provide engagement along one or more of the sides of the housing (e.g., top, bottom, left, right). In another example, attachment features 14a and 14b can provide engagement at the back of electronic device 12. In yet another example, attachment features 14a and 14b can provide engagement at the front (e.g., where, if present, a display is located) of electronic device 12. In some cases, a combination of attachment features can be located at different regions of electronic device 12 as for example at the sides and front. In one embodiment, attachment system 14 including attachment features 14a and 14b do not disturb the surfaces of electronic device 12. Similarly, attachment system 13 and in particular attachment features 13a and 13b do not disturb the surfaces of article 10.
In accordance with one embodiment, the attachment features can include magnetic elements. The magnetic elements can be configured to help in positioning article 10 relative to electronic device 12 into a mating arrangement. The magnetic elements can further help to secure article 10 and electronic device 12 into a mating engagement. It should be noted that the engagement of article 10 and electronic device 12 can be reversed by the application of an appropriate releasing force that allows article 10 and electronic device 12 to separate back into individual objects. However, the magnetic elements can permit the article 10 and electronic device 12 to subsequently resume the mating engagement without the requirement of fasteners of any sort, mechanical or otherwise. In this way, the magnetic elements provide a repeatable and consistent engagement between article 10 and electronic device 12.
Article 10 and electronic device 12 can further include components 16 and 18 respectively. Components 16 and 18 typically depend on the configuration of article 10 and electronic device 12 and can, for example, be mechanical or structural components used to provide support or they can be operational/functional components that can provide a specific set of operations/functions. The components can be dedicated to their respective devices or they may be configured for coupling with aspects of the corresponding article or device (e.g., wired or wireless). Examples of structural components can include frames, walls, fasteners, stiffeners, movement mechanisms (hinge), etc. Examples of operational components can include processors, memory, batteries, antennas, circuitry, sensors, display, inputs, and so on. Depending on their desired configuration, the components can be external (i.e., exposed at the surface) and/or internal (e.g., embedded within housing).
In other words, the magnetic field provided by magnetic surface 24 can have properties such that the net magnetic attractive force between article 20 and electronic device 22 is substantially perpendicular to engagement surface 26. Moreover, the magnetic field can result in the net magnetic attractive force between article 20 and electronic device 22 being applied uniformly along engagement surface 26. In order to release article 20 and electronic device 22, a releasing force can be applied to the two conjoined objects in order to overcome a net magnetic attractive force provided by the magnetic attachment system.
It also should be appreciated that although only one side wall is shown, in some cases different sidewalls and possibly a combination of sidewalls may be used depending on the needs of the attachment interface. It should be noted that the use of magnetic attachment precludes the need for mechanical attachments such as fasteners. Moreover, the lack of mechanical attachments and the uniformity of the overall magnetic attractive force can leave the surfaces of article 20 and electronic device 22 undisturbed helping to create an appearance of oneness by in which article 20 and electronic device 22 can appear as a single, unified entity. The uniformity in appearance can improve the overall aesthetic appeal of both article 20 and electronic device 22.
In one embodiment, a magnetic surface can be created by embedding magnetically attractable elements in the form of the magnetic attachment feature within the sidewalls of electronic device 22 and/or article 20. That is, the magnetically attractable elements can be disposed within article 20 and electronic device 22 as for example within the housing of electronic device 22. In this configuration, the housing can be formed of non-magnetic material such as plastic or non-ferrous metal such as aluminum. In this way, magnetic force lines can be configured to work through the walls of the housing. The magnetic attachment features do not disturb the physical appearance of the external surfaces of article 20 and electronic device 22. The magnetically attractable elements in article 20 and electronic device 22 can be arranged to produce magnetic fields that can cooperate with each other to generate a magnetic attractive force that attaches article 20 and electronic device 22 together in the mating engagement. The magnetic attractive force being configured to generate a magnetic attraction force normal to engagement surface 26 between electronic device 22 and article 20.
The magnetic attractive force between corresponding magnetic elements in article 20 and electronic device 22 can also be uniformly applied along engagement surface 26. The uniformity of the overall magnetic attractive force along engagement surface 26 can be a result of the uniformity of the separation distance between corresponding magnetic elements in article 20 and electronic device 22. The uniformity can also be a result of the consistency of magnetic flux density between corresponding magnetic elements in article 20 and electronic device 22. The uniformity of net magnetic attachment can be facilitated by the surfaces of article 20 and electronic device 22 each forming a well matched fit to each other. For example, one surface can be flat or have a concave geometry whereas the other surface can have a matching conforming convex geometry. In this way, by fitting tightly together, a separation distance between each of the corresponding magnetic elements in article 20 and electronic device 22 can be reduced to a minimum. The conformity of surface shapes can also enhance the overall look and feel of article 20 and electronic device 22 by reducing or eliminating the appearance of a seam at engagement surface 26. This seamless quality can provide an illusion of a single entity when article 20 and electronic device 22 are attached to each other.
In addition to enhancing the overall look and feel, the consistency of the separation distance between the magnetic elements can render the attachment force between article 20 and electronic device 22 uniform along engagement surface 26. In this way, the engagement force can be uniformly distributed across engagement surface 26 preventing buckling, weak spots, and so on that might otherwise affect the overall integrity of the engagement between article 20 and electronic device 22.
The placement of the magnetic elements can be such that only certain magnetically sensitive elements within electronic device 32 are affected by the magnetic field generated by the embedded magnetic elements. For example, a Hall Effect sensor can be used to detect whether or not article 30 is magnetically attached to and covering all or a portion of the display of electronic device 32 using the magnetic field generated by a magnetic element located in article 30. On the other hand, a magnetically sensitive element in electronic device 32 such as a compass that relies upon an external magnetic field (i.e., such as that provided by the Earth), must not be unduly affected by magnetic field lines generated by the embedded magnetic elements. Therefore, the magnetic elements can be limited to those locations in electronic device 32 positioned away from magnetically sensitive elements such as the compass.
In one embodiment, as shown in
Although the purpose of the magnetic elements is similar, i.e., attach article to electronic device, it should be appreciated that these mechanisms can widely vary. In some cases, the magnetic fields may be configured differently. By way of example, the side mounted magnetic surface may provide a first magnetic force and the front facing magnetic surface may provide a second magnetic force that is different than the first magnetic force. This may be in part due to different holding requirements as well as different surface areas, i.e., available space, and its effect on internal components of the electronic device. In one example, the side mounted magnetic surface provides a greater holding force for securing the article to the electronic device, i.e., it is the primary securing force while the front facing magnetic surface is the secondary securing force.
In one example, flap 50 includes multiple sections that are semi-rigid and bend relative to one another so as to make the flap movable and flexible. In one embodiment, flap 50 can be folded into one or more different configurations, and in some cases can be held in these configurations using a magnetic system similar to what is described above. These and other embodiments will be described in greater detail below. Moreover, it should be appreciated that the described embodiments are not limited to covers and that other configurations can be used including for example as an accessory device used as a hanging apparatus, as a support mechanism for the electronic device to improve viewing the display and as a support mechanism for or inputting touch events at a touch sensitive portion of the display, and so on.
The electronic device and article can take many forms. For the remainder of this discussion, the electronic device is described in terms of a handheld portable computing device. Accordingly,
Electronic device 100 can include housing 102. In some embodiments, housing 102 can take the form of a single piece housing formed of any number of materials such as plastic or non-magnetic metal which can be forged, molded, or otherwise formed into a desired shape. In those cases where electronic device 100 has a metal housing and incorporates radio frequency (RF) based functionality, a portion of housing 102 can include radio transparent materials such as ceramic, or plastic. Housing 102 can be configured to enclose a number of internal components. For example, housing 102 can enclose and support various structural and electrical components (including integrated circuit chips) to provide computing operations for electronic device 100. The integrated circuits can take the form of chips, chip sets, or modules any of which can be surface mounted to a printed circuit board, or PCB, or other support structure. For example, a main logic board (MLB) can have integrated circuits mounted thereon that can include at least a microprocessor, semi-conductor memory (such as FLASH), and various support circuits and so on. Housing 102 can include opening 104 for placing internal components and as necessary can be sized to accommodate display assembly for presenting visual content, the display assembly being covered and protected by protective layer 106. In some cases, the display assembly can be touch sensitive allowing tactile inputs that can be used to provide control signals to electronic device 100. In some cases, the display assembly may be a large prominent display area that covers a majority of the real estate on the front of the electronic device.
Electronic device 100 can include a magnetic attachment system that can be used to magnetically attach electronic device 100 to at least one other suitably configured object. The magnetic attachment system can include a number of magnetic attachment features distributed within and in some cases connected to housing 102. For example, the magnetic attachment system can include first magnetic attachment feature 108 and second magnetic attachment feature 110 located on different sides of electronic device 100. In particular, first magnetic attachment feature 108 can be located in proximity to side wall 102a of housing 102. Second magnetic attachment feature 110 can be located within opening 104 near side walls 102c and 102d proximate to side wall 102b of housing 102. By placing magnetic attachment feature 110 at opposite side walls, an amount of racking (or lateral movement) of a cover magnetically secured by attachment feature 110 can be substantially reduced. In those embodiments where electronic device 100 includes a display with cover glass 106 substantially filling opening 104, second attachment feature 110 (also referred to as securing attachment feature 110) can be placed beneath cover glass 106. It should be noted that without loss of generality, first magnetic attachment feature 108 will henceforth be referred to as device attachment feature 108.
Although not expressly shown, it is understood that the various magnetic attachment features of the magnetic attachment system can be located at any appropriate location of housing 102. For example, magnetic attachment features can be located at an interior bottom surface of housing 102 or along sides 102c and 102d of housing 102.
As shown in
In some cases, the portion of magnetic field 112 that is used in the magnetic attachment between device attachment feature 108 and another device can be enhanced with the use of a magnetic shunt (not shown). The magnetic shunt can be formed of magnetically active material, such as steel or iron, and be placed in a position that causes magnetic field lines that would otherwise be directed away from the attachment region to be at least partially re-directed towards the attachment region. The re-direction of the magnetic field lines can have the effect of increasing the average magnetic flux density in the attachment region.
Device attachment feature 108 can operate in an active state as in well as an inactive state. Magnetic flux density B112 can equal or exceed a magnetic flux density threshold Bthreshold inside the exterior surface of housing 102 but not outside in the inactive state. In other words, magnetic flux density B112 of magnetic field 112 at an exterior surface of housing 102 is less than a magnetic flux density threshold Bthreshold. Magnetic flux density threshold Bthreshold representing a magnetic flux value below which magnetically sensitive devices (such a magnetic strip on a credit card) can remain substantially unaffected. In addition, the presence of a magnetically active material (such as steel) in the region outside of electronic device 100 will not by itself trigger device attachment feature 108 to transition from the inactive state to the active state.
The properties of magnetic field 112 can include at least field strength, magnetic polarity, and so on. The properties of magnetic field 112 can be based upon the combination of the magnetic fields from each of the magnetic elements included in magnetic attachment feature 108 The combined magnetic fields can form in the aggregate magnetic field 112. For example, the magnetic elements can be arranged in such a way that the combination of the respective magnetic fields results in magnetic field 112 having desirable magnetic field properties (such as field strength). For example, the combination of one arrangement of magnetic elements can result in magnetic field 112 having characteristics (such a polarity and strength) that are for the most part symmetric about a particular axis (such as a geometric center line).
On the other hand, the magnetic elements can be arranged in such a way that the combination of the magnetic fields of the magnetic elements can result in magnetic field 112 having at least one property that is anti-symmetric about the center line. For example, a magnetic element on one side of the centerline can be positioned with a North magnetic pole pointing up whereas a corresponding magnetic element on the other side of the centerline can be arranged with a South magnetic pole pointing up. Hence, the magnetic properties of magnetic field 112 can be adjusted in any manner deemed appropriate to provide a desired mating engagement. For example, the magnetic properties of magnetic field 112 can be modified by arranging the magnetic elements in such a way that magnetic field 112 can cooperatively interact with another magnetic field (from another magnetic attachment system, for example). The cooperative interaction between the two magnetic fields can result in the two objects being magnetically attached to each other in a well-defined, precise, and repeatable manner.
The properties of magnetic field 112 can be stable. By stable it is meant that the properties of the magnetic field can remain essentially unchanged for an extended period of time. Hence, a stable version of magnetic field 112 can be created using magnetic elements having properties that are essentially constant (or nearly constant) over an extended period of time or at least any changes in one component is offset by a corresponding change in another component. The magnetic elements can be physically arranged in a fixed or at least substantially fixed configuration with respect other magnetic elements. For example, the magnetic elements can each have fixed sizes and polarities arranged in a specific order relative to each other providing the desired properties (shape, strength, polarity, etc.) of magnetic field 112. Hence, depending upon the properties and the nature of the magnetic elements, the shape of magnetic field 112 can remain substantially unchanged over the extended period of time (such as the anticipated operating life of electronic device 100).
In some embodiments, however, the properties of magnetic field 112 can be varied by modifying a magnetic or other physical property of at least one of the magnetic elements. When at least one magnetic element has magnetic properties (e.g., a polarity or field strength) that can be modified, the resulting magnetic field can also be modified. Accordingly, in some embodiments at least one of the magnetic elements can be characterized as having dynamic magnetic properties. By dynamic it is meant that at least one magnetic property, such as polarity, can be modified. In this way, the magnetic field properties of the resulting magnetic field can also vary. The resulting magnetic field, in turn, can alter the magnetic characteristics of magnetic field 112 that, in turn, can alter how the magnetic attachment system causes the objects to magnetically attach to each other (alignment, orientation, centering, and so forth). An electromagnet is one example of such a magnetic element whose magnetic properties can be modified as desired. Other examples include a malleable non-magnetic substrate impregnated with magnetic dopant (such as magnetite). In this way, the malleable substrate can be formed into a physical shape that can affect the nature of the magnetic field produced by the magnetic dopant material.
Turning now to other aspects of the magnetic attachment system, securing attachment feature 110 can include one or more of magnetic elements 116. When a plurality of magnetic elements is used, the arrangement of the plurality of magnetic elements 116 can be widely varied and can magnetically interact with a cooperating feature on another device. In one embodiment, the plurality of magnetic elements 116 associated with securing feature 110 can assist in securing at least a portion of another device otherwise attached to electronic device 100 by way of device attachment feature 108.
At least some of the plurality of magnetic elements 116 can have a fixed size and polarity (along the lines of a simple bar magnet) whereas other of the plurality of magnetic elements 116 can have magnetic properties that can vary (such as an electromagnet) while still others can be shaped to provide specific magnetic characteristics. For example, at least one of the plurality of magnetic elements 116 can be positioned and shaped (if need be) to interact with a magnetically responsive circuit included in the other device. Hence, the magnetically responsive circuit can respond to the presence (or absence) of a particular magnetic element(s) of securing feature 110. An example of the magnetically responsive circuit is described above with regards to the Hall Effect sensor(s) 118.
It should be noted that the magnetic field generated by magnetic elements 116 should not extend so far that magnetically sensitive circuits within electronic device 100 (such as Hall Effect sensors 118) are adversely affected. This is particularly important since the magnetic field is not generally contained within housing 102 since at least a portion of the magnetic field must extend in the z direction in order to interact with the magnetically active portion of other devices. Therefore, the magnetic field in {x,y} must be limited in extent to avoid magnetically sensitive circuits such as Hall Effect sensor 118 and compass 120. In one embodiment, the shaping of the magnetic field in {x,y} can be accomplished using what can be referred to as shaping magnets discussed in more detail below. Moreover, some or all of magnets 116 can be shaped (such as a trapezoid) that contours magnetic field lines between each of the magnets 116 to restrict the extent in {x,y} to avoid unduly affecting sensitive magnetic circuits such as compass 120.
In a particular implementation, the magnetic elements of device attachment feature 108 can be grouped into distinct magnetic regions. In this way, the magnetic fields from the magnetic regions can superpose to form magnetic field 112. The magnetic regions can include various magnetic elements that can be arranged into groups represented by magnetic elements 126 and 128. By grouping the magnetic element into separate magnetic regions, the ability of the magnetic attachment system to provide a magnetic field having desired characteristics can be substantially enhanced. Magnetic elements 126 and 128 can interact with each other to form magnetic field 112. In the one embodiment, the interaction can take the form of combination of magnetic properties of each of magnetic elements 126 and 128. In some cases, the arrangement of magnetic elements 126 and 128 can be related to each other in order to provide magnetic field 112 with desired characteristics. For example, magnetic elements 126 and 128 can be arranged in such a way relative to one another that magnetic field 112 is anti-symmetric (or symmetric) about a horizontal center line of magnetic attachment feature 108. In another embodiment, magnetic field 112 can be anti-symmetric (or symmetric) about a vertical center line of attachment feature 108. In still another embodiment, magnetic field 112 can be anti-symmetric (or symmetric) both horizontally and vertically.
Object 200 can take many forms including an accessory, peripheral, electronic device or the like. In one embodiment, object 200 can take the form of an electronic device along the lines of electronic device 100. Accordingly, electronic device 100 and electronic device 200 can be magnetically attached to each other using device attachment feature 108 and magnetic attachment feature 202 to form a cooperative electronic system. The cooperative electronic system can be one in which electronic elements in electronic device 100 and corresponding electronic elements in electronic device 200 cooperate with the other to perform functions that cannot be performed by either of the electronic devices separately. In one embodiment, information can be passed between electronic devices 100 and 200.
More specifically, magnetic attachment feature 202 can include at least magnetic elements 204 and 206 each of which can generate magnetic fields that cooperate with each other to provide magnetic field 208 (only a portion of which is shown). The properties of magnetic field 208 can be based upon the interaction of each of the plurality of magnetic elements 204 and 206. In this way, magnetic field 208 can have properties based upon the physical layout, relative size, and constituent magnetic polarities of each of the plurality of magnetic elements 204 and 206. For example, magnetic elements 204 and 206 can be disposed along a center line and have magnetic properties that superpose to provide magnetic field 208 with desired properties.
In addition to magnetic attachment feature 202, accessory device 200 can further include magnetic attachment feature 216 that can be used to interact with securing attachment feature 110. Magnetic attachment feature 216 can include a variety of magnetically active components. Some of the magnetic elements can take the form of magnetic elements arranged to cooperatively interact with corresponding magnetic elements in securing attachment feature 110. Other of the magnetic element can be more passive in nature in that they provide a mechanism for completing a magnetic circuit with magnetically active elements in securing attachment feature 110. An example of a magnetically passive element is a ferromagnetic material, such as iron or steel, that can be interact with a magnetic element actively providing an associated magnetic field. In this way, the ferromagnetic material can interact with the magnetic field to complete a magnetic circuit between the passive element in attachment feature 216 and the active element in securing attachment feature 110.
As shown in
FNET=Σ1nFneti
where Fneti is the net magnetic attractive force for each of n components. In one embodiment, net magnetic attractive force Fneti is substantially perpendicular to that portion of engagement surface 218 intersected by magnetic field 112 and magnetic field 208.
In order to assure that overall magnetic attachment force FNET is uniform along the engagement surface between device 100 and device 200, the separation distances between each corresponding magnetic element in attachment features 108 and 202 are well controlled. The separation distance can be well controlled by, for example, shaping the magnetic elements to conform to the shape of the devices. For example, if device 100 has a spline (curved) shaped housing, the magnetic elements in device 100 can be shaped to conform to the curved shape. In addition, the magnetic elements can be formed in such a way that the magnetic vectors of corresponding magnetic elements align with each other. In this way, the magnitude and direction of the net magnetic attractive force can be controlled as desired.
One result of the aligning of the magnetic vectors is that the direction of the net magnetic force between each magnetic element can be well controlled. Moreover, by reducing the separation distance between corresponding magnetic elements to a minimum, the net attractive magnetic force Fneti between each magnetic element can be maximized. In addition, maintaining a substantially uniform separation distance between the various magnetic elements, a correspondingly uniform magnetic attachment force can be provided along engagement surface 218. Moreover, by appropriately adjusting the corresponding magnetic vectors, Fnet can be applied normally to the engagement surface.
In addition to minimizing the separation distance between corresponding magnetic elements, the magnetic flux density between the corresponding magnetic elements can be increased by using magnetic shunts. A magnetic shunt formed of magnetically active material such as iron or steel can be placed on or near a magnetic element having the effect of directing magnetic flux lines in a desired direction. In this way, for example, magnetic flux lines that would otherwise propagate in a direction away from a corresponding magnetic element can be partially re-directed towards a desired direction, such as towards a magnetic attachment region between the devices thereby increasing the overall magnetic flux density. Hence, increasing the available magnetic flux density between the magnetic elements can result in a substantial increase in the net magnetic attractive force.
For the remainder of this discussion, various embodiments of accessory device 200 are discussed.
In one embodiment, accessory device 200 can include a number of protective elements that can be used to protect certain aspects of electronic device 100. For example, accessory device 200 can take the form of a protective cover. The protective cover can include a flap pivotally connected to a hinge assembly. The hinge assembly can, in turn, be coupled to electronic device 100 by way of accessory attachment feature 202. In this way, the flap portion can be used as a protective cover to protect aspects of electronic device 100 such as a display. The flap can be formed of various materials such as plastic, cloth, leather, and so forth. The flap can be segmented in such a way that a segment of the flap can be lifted to expose a corresponding portion of the display. The flap can also include a functional element that can cooperate with a corresponding functional element in electronic device 100. In this way, manipulating the flap can result in an alteration in the operation of electronic device 100.
The flap can include magnetic material that can be used to activate a magnetically sensitive circuit in electronic device 100 based upon, for example, the Hall Effect. The magnetically sensitive circuit can respond by generating a signal that can, in turn, be used to alter an operating state of electronic device 100. Since the cover can be easily attached directly to the housing of the tablet device without fasteners, the cover can essentially conform to the shape of electronic device 100. In this way, the cover will not detract or otherwise obscure the look and feel of electronic device 100.
Accessory device 200 can take the form of a support that can be used to enhance the functionality of electronic device 100. For example, accessory device 200 can be configured to act as a display stand on which a display of electronic device 100 can be viewed at a comfortable viewing angle such as 60°-85°. In other words, when placed upon a horizontal surface such as a table or desk, accessory device 200 can support electronic device 100 in such a way that the visual content presented at the display can be viewed at about a viewing angle of approximately 60°-85°. Accessory device 200 can also take the form of a support that can be used to enhance the functionality of electronic device 100 in a keyboard mode. In the keyboard mode, accessory device 200 can be used to present a touch pad surface at an angle that is ergonomically friendly. In this way, input touch events can be applied (to a virtual keyboard, for example) at an angle that does not overtax a user's wrist, hands, arms, etc.
The remainder of this discussion will describe particular embodiments of devices that can use the magnetic attachment system. In particular,
As shown in
Although not shown, the display assembly underlying cover glass 806 can be used to display images using any suitable display technology, such as LCD, LED, OLED, electronic or e-inks, and so on. The display assembly can be placed and secured within the cavity using a variety of mechanisms. In one embodiment, the display assembly is snapped into the cavity. It can be placed flush with the adjacent portion of the housing. In this way, the display can present visual content that can include video, still images, as well as icons such as graphical user interface (GUI) that can provide information the user (e.g., text, objects, graphics) as well as receive user provided inputs. In some cases, displayed icons can be moved by a user to a more convenient location on the display. In some embodiments, a display mask can be applied to, or incorporated within or under cover glass 806. The display mask can be used to accent an unmasked portion of the display used to present visual content and can be used to make less obvious device attachment feature 108 and securing attachment feature 110. Cover 900 can include flap 902 and (not shown) flexible hinge 904 that can magnetically interact with magnetic attachment feature 108 to form a magnetic attachment force suitable for magnetically attaching cover 900 and tablet device 800.
Cover assembly 900 is shown in
In order to transition from the closed to the open configuration, releasing force Frelease can be applied to flap 902. Releasing force Frelease can overcome the magnetic attractive force between attachment feature 216 in flap 902 and attachment feature 110 in tablet device 800. Hence, cover assembly 900 can be secured to tablet device 800 until releasing force Frelease is applied to flap 902. In this way, flap 902 can be used to protect cover glass 806. For example, cover assembly 900 can be magnetically attached to tablet device 900. Flap 902 can then be placed upon and magnetically secured to cover glass 806 by the magnetic interaction between magnetic attachment features 110 and 216. Flap 902 can be detached from cover glass 806 by the application of releasing force Frelease directly to flap 902. Releasing force Frelease can overcome the magnetic attraction between magnetic attachment features 110 and 216. Hence, flap 902 can then move away from cover glass 806 unhindered. In order to maintain a good magnetic attachment between flap 902 and magnetic attachment feature 110, flap 902 can include a number of magnetic elements. Some of the magnetic elements in flap 902 can interact with corresponding magnetic elements in magnetic attachment feature 110. The net magnetic attractive force generated between the magnetic elements can be strong enough to prevent inadvertent release of flap 902 from cover glass 806 during normal handling. The net magnetic attractive force, however, can be overcome by releasing force Frelease. It should be noted that using at least two magnetic attachment features 110 on either side of tablet device 800, lateral movement of cover 900 (also referred to as racking) can be essentially eliminated.
In some embodiments, flap 902 can be unitary in appearance by which it is meant that flap 902 can appear as a single unit such that flap 902 can bend slightly if formed of flexible material. However, in other cases, flap 902 can include a number of segments joined to adjacent segments by associated folding regions that permit the segments to fold independently of each other as well as with respect to tablet device 800. Accordingly,
In one embodiment, body 1002 can be formed of layers of material attached to one another forming a laminate structure. Each layer can take the form of a single piece of material that can have a size and shape in conformance with body 1002. Each layer can also have a size and shape that correspond to only a portion of body 1002. For example, a layer of rigid or semi-rigid material about the same size and shape of a segment can be attached to or otherwise associated with the segment. In another example, a layer of rigid or semi-rigid material having a size and shape in accordance with body 1002 can be used to provide segmented cover assembly 1000 as a whole with a resilient foundation. It should be noted that the layers can each be formed of materials having desired properties. For example, a layer of segmented cover assembly 1000 that comes in contact with delicate surfaces such as glass can be formed of a soft material that will mar or otherwise damage the delicate surface. In another embodiment, a material such as micro-fiber can be used that can passively clean the delicate surface. On the other hand, a layer that is exposed to the external environment can be formed of a more rugged and durable material such as plastic or leather.
In a specific embodiment, body 1002 can be partitioned into a number of segments that can be widely varied. In the embodiment shown in
For example, if segmented body 1002 is constructed to have three independently foldable segments (segment 1004, segment 1006, and segment 1008), a triangular structure can be formed by coupling segment 1004 and segment 1008 (using magnets as described below or simply friction coupling). It should be noted that the properties of the triangular structure can vary in accordance with the relative sizes of the segments 1004, 1006, and 1008. In other words, when segments 1004, 1006, and 1008 are about equal in width, then the triangular structure can take the form of an equilateral triangle, whereas when two segments are about of equal width, then the triangular structure can take on the shape of an isosceles triangle. In this way, the triangular structure can be shaped for a particular purpose. For example, in one configuration the triangular structure can be used to support tablet device 800 in a movie mode or in a keyboard mode.
In one embodiment, segmented body 1002 can include a number of magnets some of which can be used to form the triangular structure. For example, segment 1004 can include first edge attach magnets 1012 linearly arrayed along first edge 1014 of segmented body 1002 whereas segment 1008 can include second edge attach magnets 1016 linearly arrayed along second edge 1018 opposite to first edge 1014. In this embodiment, first edge attach magnets 1012 and second edge attach magnets 1016 have a one to one correspondence in which each first edge attach magnet 1012 can be associated with a corresponding one of second edge attach magnets 1016. Moreover, in order to create a maximum magnetic attractive force between first edge attach magnets 1012 and second edge attach magnets 1016, each magnet pair can exhibit opposite magnetic polarities. For example, when first edge attach magnets 1012 are arranged in first polarity pattern (alternating) M1{P1, P2, P1, P2, P1, P2, P1, P2}, then second edge attach magnets 1016 can be arranged in complementary priority pattern M2{P2, P1, P2, P1, P2, P1, P2, P1}. In this way, a maximum magnetic attachment force can be realized between the two magnetic arrays while minimizing magnetic fringe effects at the ends of the magnetic arrays. In one embodiment, first edge attach magnets 1012 and second edge attach magnets 1016 can have dimensions of approximately (L×W×H) of 10 mm×5 mm×8 mm formed of neodymium (N35SH) grade magnets. It should be noted that the number of edge attach magnets can vary from as few as two to more than 16.
It should be noted that in some cases, it can be desirable to constrain a magnetic field provided by first edge attach magnets 1012 and second edge attach magnets 1016 in order to avoid or at least control adverse magnetic affects on sensitive magnetic circuits such as compass 120 (whose position is indicated in relation to first edge attach magnets 1012 when segmented body 1002 is in the fully closed configuration). In order to control the adverse affects of the magnetic field generated by first edge attach magnets 1012, field shaping magnets 1022 can be placed in positions that can reduce a magnetic offset experienced by compass 120. Moreover, as shown in insert 1024, first edge attach magnets 1012 (as well as second edge attach magnets 1016) can be shaped in such a way that leakage magnetic flux Φleakage between the constituent magnets can be substantially reduced. In the embodiment shown in insert 1024, magnets 1026 are trapezoidal in form that limits the amount of magnetic flux Φleakage. In this way, the magnetic offset at compass 120 caused by first edge attach magnets 1012 can be maintained with an acceptable range. For example, the magnetic offset at compass 120 from edge attach magnets 1012 can be on the order of 10° or less at a reference location.
One approach to forming at least one triangular support structure can be to simply friction couple segment 1004 and segment 1008. By friction couple it is meant that surface friction created between segments 1004 and 1008 when brought in direct contact can be sufficient to maintain the triangular structure even when used to support tablet device 800 in the movie mode or the keyboard mode. Alternatively, the triangular structure can be formed by bringing first edge attach magnets 1012 in proximity to second edge attach magnets 1016 thereby forming a magnetic circuit. It should be noted that in some embodiments, first edge attach magnets 1012 and second edge attach magnets 1016 are not required to overlay one another but merely be in proximity separated by distance “d” (shown in
Segmented cover 1000 can also include holding magnets 1028 and 1030 that can be used to maintain segmented cover 1000 in a fixed position in relation to display 806 in the fully closed configuration. In other words, holding magnets 1028 and 1030 can reduce or even eliminate movement of cover 1000 from “side to side” (sometimes referred to as “racking”). In one embodiment, holding magnet 1030 can be oversized in relation to holding magnet 1028. In this way, first portion 1030a of holding magnet 1030 (i.e., that portion of holding magnet 1030 that does not function as an edge attach magnet) can cooperate with holding magnet 1028 to reduce racking of cover 1000 whereas edge attach portion 1030b of holding magnet 1030 can function as part of first edge attach magnets 1012.
In some cases, cover 1000 can also include magnets used to trigger magnetic sensors in tablet device 900. For example, segment 1004 can include first sensor magnet 1032 and segment 1006 can include second sensor magnet 1034. It should be noted that in some embodiments, first sensor magnet 1032 can be over-sized to prevent a false open condition in which tablet device 800 activates the display assembly even though body 1002 remains in the fully closed configuration. The false open condition can be triggered when body 1002 laterally moves (i.e., racking) to such an extent that a sensor disposed in tablet 800 can no longer detect the magnetic field generated by first sensor magnet 1032 causing the processor in tablet device 1032 to alter the operating state to active display mode. Therefore, the combination of oversizing of first sensor magnet 1032 and using holding magnets 1028 and 1030 to reduce racking, the incidence of false open condition can be greatly reduced.
In this arrangement, first sensor magnet 1032 can be detectable by a magnetically sensitive circuit (such as a Hall Effect sensor, or HFX) disposed within tablet 800. In particular, the HFX can detect a magnetic field provided by sensor magnets 1032 and 1034 through protective layer 806. In this way, a processor in tablet device 800 can use magnetic detection information to determine a spatial relationship between cover 1000 and tablet 800. More specifically, the detection information can provide an indication that segment 1004 is folded away from tablet 1000 (when sensor magnet 1032 is not detected and sensor magnet 1034 is detected). In this way, the processor can alter operation of tablet device 800 in accordance with the spatial relationship between cover 1000 and tablet 800. For example, when the processor determines that only segment 1004 is folded away to reveal a corresponding portion of display assembly 804, then the processor can change the operation of tablet 800 to provide visual content only by the revealed portion of display assembly 804 in what is referred to as peek mode. In some embodiments, tablet device 800 can operate in what is referred to as extended peek mode when sensor magnets 1032 and 1034 are not detected but the processor can determine that cover 1000 is magnetically attached to tablet 800 (in other words, segments 1004 and 1006 are folded away from tablet device 800 to reveal a corresponding portion of display assembly 804, but segment 1008 remains in place). In this way, tablet device 800 can present visual content in only that portion of display assembly 804 that is viewable (corresponding to folded away segments 1004 and 1006).
Cover 1000 can magnetically attach to tablet device 800 using flexible hinge assembly 1036 that can include flexible hinge 1038 and magnetic assembly 1040. Flexible hinge assembly 1036 can be integrated in the sense that there flexible hinge assembly 1036 is formed as part of segmented cover 1000. In some embodiments, flexible hinge assembly 1036 can be formed of the same material (fabric, leather, etc.) as is used to form a top portion of segmented cover 1000. In this way, the visual effect can be one of continuity when viewing segmented cover 1000. Further enhancing the sense of continuity is the wrap around nature of flexible hinge 1036. By wrap around it is meant that material that forms body 1002 (and in particular a top portion formed of fabric, for example) can continue beyond edge 1018 (sometimes referred to as a tail) to form flexible hinge 1038 that can wrap around magnetic assembly 1040. In this way, a sense of continuity between body 1002 and flexible hinge assembly 1036 can be achieved.
Flexible hinge assembly 1036 can include flexible hinge 1038 coupled to magnetic assembly 1040 configured to magnetically attach to magnetic attachment feature 108 in tablet device 800. In one embodiment, magnetic assembly 1040 can include a plurality of magnets configured to form a magnetic attachment with corresponding magnets in magnetic attachment feature 108. For example,
M3:{[P1,P2,P1],[P1,P2],[P2,P1],[P1,P2],[P2,P1,[P1,P2][P2,P1,P2]}
(where brackets [ ] indicate physically grouped magnets).
On the other hand, magnetic attachment feature 108 disposed in tablet device 800 can include a corresponding magnetic array 1044 arranged in a manner that is complementary to alternative pattern M3. By complementary it is meant that magnetic polarities are inverted in that a magnet having a P1 polarity will be paired with a magnet having a P2 polarity and so forth. In this way, a maximum amount of magnetic attractive force between the two magnets can be realized with a minimum of magnetic fringing effects at either end of the magnetic array.
However, in still other embodiments as represented by magnetic array 1046, specific magnets can be replaced by ferromagnetic blocks in order to conserve on the number of magnets used for magnetic attachment. For example, in one embodiment, a reduced number of magnets can be used in magnetic attachment feature 108 by replacing some magnets with ferromagnetic blocks (B) and can be arranged in polarity pattern M4 as follows:
M4:{[P1,B,P1],[P1,P2],[P2,P1],[P1,P2],[P2,P1,[P1,P2][P2,B,P2]}
where B represents a ferromagnetic block formed of ferromagnetic material such as 1010 steel. It should be noted that the arrangement of magnets in either magnetic attachment feature 108 or magnetic assembly 1040 can be widely varied. Any limitations can be due primarily to the relationship between the magnetic arrays and the desired properties of the magnetic attachment.
The cover can be produced by providing a layer of protective finishing material having a first surface exposed to an external environment and a second surface opposite the first surface, attaching a net backing material to the second surface of the layer of protective finishing material, the net backing material having a size and shape in accordance with the layer of protective finishing material the net backing layer providing resilient support for the protective cover, attaching a support panel associated with and having a size and shape in accordance with each of the independently foldable segments separated from each other by a gap corresponding to the folding region between the net backing material and a resilient base layer, and attaching at bottom layer to the resilient base layer, the bottom layer conforming to the segments. A flexible hinge portion integrated with the segmented flap, by wrapping a hinge tail about a magnetic attachment feature, the hinge tail being a continuation of the layer of protective finishing material, wherein a length of the hinge tail is adjusted to provide strain relief in accordance with expected stress incurred while the protective cover is magnetically attached to a host device and while being used.
It should be noted that in the case where neither Hall Effect sensors 118-1 or 118-2 detect either sensor magnet 1032 or 1034, then cover 1000 can be in one of two possible states. A first state being the fully open configuration in which substantially all of cover glass 806 is revealed such that substantially of the display assembly can present visual content. However, a second state (also referred to as extended peek mode) can be associated with segments 1004 and 1006 being folded away from cover glass 806 but segment 1008 remains in place. The fully open configuration can be distinguished from the extended peek state by determining if cover 1000 is magnetically attached to tablet device 800. This determination can be accomplished using magnetically sensitive circuits such as compass 120. If a magnetic offset consistent with the presence of magnetic attachment feature 108 being in active mode is experienced by compass 120, then the processor can infer that cover 1000 is magnetically attached to tablet device 800 and in so doing can alter the operation of tablet device 800 in accordance with the extended peek mode (such as presenting visual content at a viewable part of the display assembly).
Accordingly, when Hall Effect sensor 118-1 detects magnet 1032 and Hall Effect sensor 118-2 does not detect magnet 1034, then tablet device 800 can operate in accordance with first reverse folded configuration 1206. For example, in reverse folded configuration 1206, tablet device 800 can operate in a manner that facilitates use of the display assembly as a view finder. In an alternative embodiment shown in
In addition to providing protection to tablet device 800, segmented cover assembly 1000 can be manipulated to form useful support structures. Accordingly,
As shown in
Furthermore, as additional segments are lifted from cover glass 806 to further expose additional portions of cover glass 806, additional portions of the display can be activated corresponding to the lifted segments. In this way, in the “extended” peek mode, additional visual information can be presented in the portions of the display activated. In this way, as segments are lifted from cover glass 806, additional segments of the display can be activated providing the extended peek modes in accordance with the number of foldable segments. Alternatively, the tablet device 900 can respond to the signals from the Hall Effect sensor(s) by simply powering up the display when the flap is moved away from the display and power down (sleep) when the display is covered by the flap.
The electronic device 1750 also includes a user input device 1758 that allows a user of the electronic device 1750 to interact with the electronic device 1750. For example, the user input device 1758 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 sensor data, etc. Still further, the electronic device 1750 includes a display 1760 (screen display) that can be controlled by the processor 1752 to display information to the user. A data bus 1766 can facilitate data transfer between at least the file system 1754, the cache 1756, the processor 1752, and the CODEC 1763.
In one embodiment, the electronic device 1750 serves to store a plurality of media items (e.g., songs, podcasts, etc.) in the file system 1754. When a user desires to have the electronic device play a particular media item, a list of available media items is displayed on the display 1760. Then, using the user input device 1758, a user can select one of the available media items. The processor 1752, upon receiving a selection of a particular media item, supplies the media data (e.g., audio file) for the particular media item to a coder/decoder (CODEC) 1763. The CODEC 1763 then produces analog output signals for a speaker 1764. The speaker 1764 can be a speaker internal to the electronic device 1750 or external to the electronic device 1750. For example, headphones or earphones that connect to the electronic device 1750 would be considered an external speaker.
The electronic device 1750 also includes a network/bus interface 1761 that couples to a data link 1762. The data link 1762 allows the electronic device 1750 to couple to a host computer or to accessory devices. The data link 1762 can be provided over a wired connection or a wireless connection. In the case of a wireless connection, the network/bus interface 1761 can include a wireless transceiver. The media items (media assets) can pertain to one or more different types of media content. In one embodiment, the media items are audio tracks (e.g., songs, audio books, and podcasts). In another embodiment, the media items are images (e.g., photos). However, in other embodiments, the media items can be any combination of audio, graphical or visual content. Sensor 1776 can take the form of circuitry for detecting any number of stimuli. For example, sensor 1776 can include a Hall Effect sensor responsive to external magnetic field, an audio sensor, a light sensor such as a photometer, and so on.
The magnetic attachment feature can be used to magnetically attach at least two objects. The objects can take many forms and perform many functions. When magnetically attached to each other, the objects can communicate and interact with each other to form a cooperative system. The cooperating system can perform operations and provide functions that cannot be provided by the separate objects individually. For example, at least a first object and a second object can be magnetically attached to each other such that the first object can be configured to provide a support mechanism to the second object. The support mechanism can be mechanical in nature. For example, the first object can take the form of a stand that can be used to support the second object on a working surface such as a table. In another example, the first object can take the form of a hanging apparatus. As such, the first object can be used to hang the second object that can then be used as a display for presenting visual content such as a visual, still images like a picture, art work, and so on. The support mechanism can also be used as a handle for conveniently grasping or holding the second object. This arrangement can be particularly useful when the second object can present visual content such as images (still or visual), textual (as in an e-book) or has image capture capabilities in which case the second object can be used as an image capture device such as a still or visual camera and the first object can be configured to act as a support such as a tripod or handle.
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 non-transitory computer readable medium. The computer readable medium is defined as 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, 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, used 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 the specific embodiments described herein are presented for purposes of illustration and description. They are not target to be exhaustive or to limit the 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.
The advantages of the embodiments described are numerous. Different aspects, embodiments or implementations can yield one or more of the following advantages. Many features and advantages of the present embodiments are apparent from the written description and, thus, it is intended by the appended claims to cover all such features and advantages of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, the embodiments should not be limited to the exact construction and operation as illustrated and described. Hence, all suitable modifications and equivalents can be resorted to as falling within the scope of the invention.
This application is a continuation of U.S. patent application Ser. No. 13/612,208, filed Sep. 12, 2012, entitled “Cover for an Electronic Device,” now U.S. Pat. No. 9,326,576 issued May 3, 2016, which claims priority under 35 U.S.C. 119(e) to U.S. Provisional Patent Application No. 61/681,117, filed Aug. 8, 2012, entitled “Consumer Electronic Product,” the disclosure of each of which is incorporated herein by reference in its entirety for all purposes.
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| Number | Date | Country | |
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| Number | Date | Country | |
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| 61681117 | Aug 2012 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 13612208 | Sep 2012 | US |
| Child | 15142639 | US |
