PATENT DOCUMENT

Publication Number: US-11378225-B2
Application Number: US-201916563252-A
Country: US
Kind Code: B2

Title: Display support arm mount

Abstract:
Display assemblies for supporting displays on stands or support arms have mount portions to removably attach to the displays using magnetic assemblies and latches. The magnetic assemblies and latches can improve user experience and allow the display to be installed on a support arm from the viewing side of the display and without having to see or reach behind the display. Magnetic structures can center a mount portion of the support arm and a recess of the display and can attract them to each other. Laterally-extending latches can ensure the display is not inadvertently removed. Locking mechanisms can prevent the display from being rotated to a portrait orientation when sufficient space around the display and the necessary user intent is not provided.

Claims:
What is claimed is: 
     
       1. A display assembly, comprising:
 an electronic display having a display panel and a housing, the display panel being positioned in the housing, the housing having a mounting recess, the mounting recess having a sidewall surface with at least one laterally-extending recess; and 
 a support arm configured to support the electronic display relative to a ground surface, the support arm having a mount portion with a set of laterally-extending latches configured to be positioned in the at least one laterally-extending recess to retain the mount portion in the mounting recess of the electronic display, at least one latch of the set of laterally-extending latches being radially retractable relative to the mount portion, the support arm having a release mechanism operable along a non-radial axis relative to the mount portion to radially retract the at least one laterally-extending latch of the set of laterally extending latches, the non-radial axis being parallel to a plane in which the at least one laterally-extending latch retracts. 
 
     
     
       2. The display assembly of  claim 1 , further comprising:
 a display stand attached to the support arm at an end of the support arm opposite the mount portion; 
 wherein the at least one laterally-extending recess includes a set of laterally-extending recesses in the sidewall surface receiving the set of laterally-extending latches; 
 wherein the electronic display further comprises a first magnetic structure and the mount portion comprises a second magnetic structure, the first and second magnetic structures being attracted to each other while the mount portion is positioned in the mounting recess. 
 
     
     
       3. The display assembly of  claim 1 , wherein the mount portion is round and the set of laterally-extending latches are circumferentially spaced around the mount portion. 
     
     
       4. The display assembly of  claim 1 , wherein the at least one latch of the set of laterally-extending latches is biased into an extended position relative to the mount portion. 
     
     
       5. The display assembly of  claim 1 , wherein the release mechanism comprises a switch configured to retract the at least one latch of the set of laterally-extending latches. 
     
     
       6. The display assembly of  claim 1 , wherein the electronic display is rotatable relative to the mount portion while the mount portion is retained to the electronic display. 
     
     
       7. The display assembly of  claim 6 , wherein the electronic display is rotatable from a landscape orientation and a portrait orientation in only one rotational direction. 
     
     
       8. The display assembly of  claim 1 , wherein the housing comprises a first magnetic structure and the mount portion comprises a second magnetic structure, the first and second magnetic structures being attracted to each other while the mount portion is positioned in the mounting recess. 
     
     
       9. The display assembly of  claim 8 , wherein the first and second magnetic structures are aligned along an axis, and the first and second magnetic structures each comprise at least one magnetic portion having radially-oriented poles relative to the axis. 
     
     
       10. A display support arm, comprising:
 a first end configured to attach the arm to a support surface; 
 a second end configured to attach the arm to a display, the second end including a display-facing surface; 
 a first magnetic structure positioned in the second end and having a first magnetic axis perpendicular to the display-facing surface; 
 a second magnetic structure positioned in the second end and having a second magnetic axis parallel to the display-facing surface; and 
 a third magnetic structure positioned in the second end and having a third magnetic axis, the third magnetic axis being parallel to the display-facing surface and perpendicular to the second magnetic axis. 
 
     
     
       11. The display support arm of  claim 10 , wherein the third magnetic structure is positioned opposite the first magnetic structure relative to the second magnetic structure. 
     
     
       12. The display support arm of  claim 11 , wherein the second and third magnetic structures each comprise an inner end along the respective second and third magnetic axes, wherein polarities of the second and third magnetic structures at the inner ends match. 
     
     
       13. The display support arm of  claim 10 , wherein the second magnetic axis intersects the first magnetic axis. 
     
     
       14. The display support arm of  claim 10 , wherein the second magnetic axis extends through a width of the first magnetic structure. 
     
     
       15. The display support arm of  claim 10 , wherein the display-facing surface comprises a groove or ridge configured to interface a respective ridge or groove of the display. 
     
     
       16. The display support arm of  claim 15 , wherein the groove or ridge has an overall width across the display-facing surface, the overall width of the groove or ridge being greater than an overall width of the first and second magnetic structures. 
     
     
       17. A monitor assembly, comprising:
 a stand; 
 a support arm being pivotally attached to the stand, the support arm being rotatable relative to the stand between a raised position and a lowered position, the support arm having a monitor mount portion; and 
 a monitor being pivotally attached to the monitor mount portion, the monitor being rotatable relative to the support arm so as to permit rotation of the monitor from a landscape orientation to a portrait orientation while the support arm is in the raised position, prevent rotation of the monitor from the landscape orientation to the portrait orientation while the support arm is in the lowered position, and prevent rotation of the support arm relative to the stand while the monitor is in the portrait orientation. 
 
     
     
       18. The monitor assembly of  claim 17 , wherein a pin-and-slot feature of the support arm and the monitor prevents rotation of the monitor relative to the support arm. 
     
     
       19. The monitor assembly of  claim 17 , wherein rotation of the monitor to the portrait orientation prevents rotation of the support arm relative to the stand. 
     
     
       20. The monitor assembly of  claim 17 , wherein the monitor is disconnectable from the monitor mount portion.

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This claims priority to U.S. Provisional Patent Application No. 62/855,382, filed 31 May 2019, and entitled “DISPLAY SUPPORT ARM MOUNT,” and U.S. Provisional Patent Application No. 62/728,592, filed 7 Sep. 2018, and entitled “MAGNETIC ATTACHMENT MECHANISM WITH SAFETY LATCH FOR A DESKTOP DISPLAY,” the entire disclosures of which are hereby incorporated by reference. 
    
    
     FIELD 
     The described embodiments relate generally to stands and supports for electronic devices. More particularly, these embodiments relate to support arm mounts for a computer display. 
     BACKGROUND 
     Computer device designers often desire to control positioning of a computer monitor or similar display at whatever height and orientation best suited for the needs of the user. This allows the display to accommodate users and desktop surfaces of different heights, sizes, and postures. Users also generally prefer to adjust the positioning of the monitor with little expended effort. 
     While various existing display stands provide tilt, rotation, and vertical height adjustment of monitors, these features often come at the expense of being convenient and natural to use. For example, it can be difficult to mount the monitor to a stand, especially when the rear side of the monitor is not easily accessible or the monitor is to be mounted to the stand while the stand is in a standing position. These issues can make using a display stand difficult, awkward, and time consuming and impede the stand from having a high quality, satisfying user experience. There is therefore a constant need for improvements to stands and supports for electronic devices. 
     SUMMARY 
     An aspect of the present disclosure relates to a display assembly comprising an electronic display having a display panel and a housing, with the display panel being positioned in the housing, with the housing having a mounting recess, and with the mounting recess having a sidewall surface with at least one laterally-extending recess. The display assembly can also include a support arm configured to support the electronic display relative to a ground surface, with the support arm having a mount portion with a set of laterally-extending latches configured to be positioned in the at least one laterally-extending recess to retain the mount portion in the mounting recess of the electronic display, and with at least one latch of the set of laterally-extending latches being laterally retractable relative to the mount portion. 
     In some embodiments, the display assembly can further comprise a display stand attached to the support arm at an end of the support arm opposite the mount portion. The at least one laterally-extending recess can include a set of laterally-extending recesses in the sidewall surface that receive the set of laterally-extending latches. The electronic display can further comprise a first magnetic structure, and the mount portion can comprise a second magnetic structure with the first and second magnetic structures being attracted to each other while the mount portion is positioned in the mounting recess. 
     In some embodiments, the mount portion can be round, and the set of laterally-extending latches can be circumferentially spaced around the mount portion. The at least one latch of the set of laterally-extending latches can be biased into an extended position relative to the mount portion. The mount portion can comprise a switch configured to retract the at least one latch of the set of laterally-extending latches. The electronic display can be rotatable relative to the mount portion while the mount portion is retained to the electronic display. In some embodiments, the electronic display can be rotatable from a landscape orientation and a portrait orientation in only one rotational direction. 
     The housing can comprise a first magnetic structure and the mount portion can comprise a second magnetic structure, with the first and second magnetic structures being attracted to each other while the mount portion is positioned in the mounting recess. The first and second magnetic structures can be aligned along an axis, and the first and second magnetic structures can each comprise at least one magnetic portion having radially-oriented poles relative to the axis. 
     Another aspect of the disclosure relates to a display support arm comprising a first end configured to attach the arm to a support surface, a second end configured to attach the arm to a display, with the second end including a display-facing surface, a first magnetic structure positioned in the second end and having a first magnetic axis perpendicular to the display-facing surface, and a second magnetic structure positioned in the second end and having a second magnetic axis parallel to the display-facing surface. 
     The support arm can further comprise a third magnetic structure positioned in the second end and having a third magnetic axis parallel to the display-facing surface, with the third magnetic structure being positioned opposite the first magnetic structure relative to the second magnetic structure. The second and third magnetic structures can each comprise an inner end along the respective second and third magnetic axes, wherein polarities of the second and third magnetic structures at the inner ends match. 
     The second magnetic axis can intersect the first magnetic axis. The second magnetic axis can extend through a width of the first magnetic structure. The display-facing surface can comprise a groove or ridge configured to interface a respective ridge or groove of the display. The groove or ridge can have an overall width across the display-facing surface, with the overall width of the groove or ridge being greater than an overall width of the first and second magnetic structures. 
     Yet another aspect of the disclosure relates to a monitor assembly including a stand, a support arm pivotally attached to the stand, with the support arm being rotatable relative to the stand between a raised position and a lowered position and with the support arm having a monitor mount portion, and a monitor being pivotally attached to the monitor mount portion. The monitor can be rotatable relative to the support arm between a landscape orientation and a portrait orientation, and the monitor mount portion permits rotation of the monitor from the landscape orientation to the portrait orientation while the support arm is in the raised position, prevents rotation of the monitor from the landscape orientation to the portrait orientation while the support arm is in the lowered position, and prevents rotation of the support arm relative to the stand while the monitor is in the portrait orientation. 
     In some embodiments, a pin-and-slot feature of the support arm and the monitor prevents rotation of the monitor relative to the support arm. Rotation of the monitor to the portrait orientation can prevent rotation of the support arm relative to the stand. The monitor can be disconnectable from the monitor mount portion. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The disclosure 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: 
         FIG. 1  shows a front view of a display in a landscape orientation and lowered position relative to a stand. 
         FIG. 2  shows a right side view the display assembly of  FIG. 1 . 
         FIG. 3  shows a front view of the display assembly of  FIG. 1  with the display in a landscape orientation and a raised position relative to the stand. 
         FIG. 4  is a right side view of the display assembly of  FIG. 3 . 
         FIG. 5  shows a front view of the display assembly of  FIG. 1  with the display in a portrait orientation and a raised position relative to the stand. 
         FIG. 6  shows a side view of the display assembly of  FIG. 5 . 
         FIG. 7  shows an isometric view of the upper end of a stand and support arm of a display assembly. 
         FIG. 8  shows a side view of the components of  FIG. 7 . 
         FIG. 9  shows an end view of the display-facing side of a mounting portion of the support arm of  FIG. 7 . 
         FIG. 10  shows an end view of the arm-facing side of the mounting portion of the support arm of  FIG. 7 . 
         FIG. 11  shows a side section view of the support arm as taken through section lines  11 - 11  in  FIG. 9 . 
         FIG. 12  is an end view of the mounting portion of the support arm of  FIG. 7  with the outermost display-facing surfaces omitted to show internal detail. 
         FIG. 13  is a diagram of magnetic assemblies. 
         FIG. 14  is an isometric view of a rear side of a housing of a display. 
         FIG. 15  is an isometric view of a bottom end portion of a recess of the housing of  FIG. 14 . 
         FIG. 16  shows a diagrammatic side section view of a mounting portion and a recess of a display housing. 
         FIG. 17  shows a diagrammatic side section view of the mounting portion and recess of  FIG. 16  with the mounting portion inserted into the recess. 
         FIG. 18  shows a side section view of a lateral recess and a latch. 
         FIG. 19  shows a side section view of a lateral recess and a latch in a partially withdrawn configuration relative to  FIG. 18 . 
         FIG. 20  shows a side second view of a lateral recess and a latch in a further withdrawn configuration relative to  FIG. 19 . 
         FIG. 21  shows an isometric view of a support arm. 
         FIG. 22  shows an isometric view of a support arm. 
         FIG. 23  shows an inside view of a display mounting adapter. 
         FIG. 24  shows an outside view of the display mounting adapter of  FIG. 23 . 
         FIG. 25  shows an isometric view of the display mounting adapter of  FIG. 23  with certain components omitted. 
         FIG. 26  shows an inside view of the display mounting adapter of  FIG. 23  with certain components omitted. 
         FIG. 27  shows an isometric view of a cam follower of the display mounting adapter of  FIG. 23 . 
         FIG. 28  shows a side section view taken through section lines  28 - 28  of  FIG. 26 . 
         FIG. 29  shows an inside view of the display mounting adapter of  FIG. 23  with certain components omitted and the adapter being in a locked state. 
         FIG. 30  shows a side section view taken through section lines  30 - 30  of  FIG. 29 . 
         FIG. 31  shows a front end view of an alternate embodiment of a mounting portion of a support arm with some components omitted and with the mounting portion in a locked state. 
         FIG. 32  shows a side section view of the mounting portion and support arm as taken through section lines  32 - 32  in  FIG. 31 . 
         FIG. 33  shows a partial front end view of the mounting portion of  FIG. 31  with the mounting portion in an unlocked state. 
         FIG. 34  shows a side section view of the mounting portion and support arm as taken through section lines  34 - 34  in  FIG. 33 . 
         FIG. 35  shows a side section view of the mounting portion and support arm as taken through section lines  35 - 35  in  FIG. 31  and with the mounting portion inserted into a recess of a display housing. 
         FIG. 36  shows a side section view of the mounting portion and support arm as taken through section lines  35 - 35  in  FIG. 31  and with the mounting portion inserted into a recess of another embodiment of a display housing in a first orientation. 
         FIG. 37  shows a side section view of the mounting portion and support arm as taken through section lines  35 - 35  in  FIG. 31  and with the mounting portion inserted into a recess of another embodiment of a display housing in a second orientation. 
     
    
    
     DETAILED DESCRIPTION 
     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 any 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 disclosure relates to a display stand assembly and related methods that can make usage of the stand intuitive, secure, and robust. Traditional display stands comprise a top hook and spring latch or screw mount. Once assembled, the display can then rotate, relative to the stand, between landscape and portrait orientation. In either case, the user is required to actively move a latch or apply a screw to attach the display to the stand, and these activities can only be performed from the rear side of the screen. A user attempting to mount the display to the stand from the front of the display cannot do so. If the display stand or display are not movable to a position where the rear side of the display is accessible, the user is unable to mount the display. 
     Aspects of the present disclosure relate to an implementation of a display stand attachment method wherein a combination of magnetic features and latches work together to allow “blind” mounting of the display to a mounting portion (i.e., the mount portion or the “puck”) of the stand. In other words, the user can hold the display from the viewing side of the display and can mount the display to the stand without the mounting portion of the stand being visible and without having to awkwardly reach behind the display in order to secure the mounting portion to the display. In some embodiments, the user can quickly and easily “click in” the display to the mounting portion with a single horizontal movement of the display relative to the support arm on the stand and then let go without the display becoming disconnected from the mounting portion. 
     Magnets in the display and in the mounting portion of the support arm can guide and center the display relative to the mounting portion (or vice versa) to assist the user in inserting the mounting portion into a recess in the display. Thus, the magnets can reduce or eliminate the need for the user to see the location of the recess on the display relative to the mounting portion of the support arm due to magnetic attraction that guides the mounting portion to a receiving recess of the display. 
     A set of retractable latches of the mount portion can keep the display secured to the support arm once the two devices have been coupled. In this manner, the magnetic attachment between the display and the support arm can be less susceptible to being unmated when a relatively large moment or other inadvertent input force is applied to the display (e.g., the user pushes against a corner of the display or accidentally pulls on the edge of the display). The latches can be connected to a release mechanism to remove the display from the mount portion or to rotate the display relative to the mount portion. At least one of the latches can comprise a feature to prevent the display from unintentionally sliding off of the mount portion when the release mechanism is operated. 
     Another aspect of the present disclosure relates to apparatuses and methods for controlling the rotation and movement of the support arm and display while they are mated with each other. The support arm and display can include interactive features that limit rotation of the display relative to the mounting portion unless the display is in a raised position. For example, the display can be mechanically prevented from rotating from a landscape orientation to a portrait orientation when the display is in a lowered position relative to the stand, thereby preventing the display from being rotated into contact with a desktop or other support surface under the stand. At a raised position, the rotation of the display can be mechanically unlocked or otherwise enabled, thereby allowing the display to move to a portrait orientation when its height relative to the support surface is sufficient to provide clearance between the support surface and the rotating display. Additionally, the display can be mechanically prevented from vertically translating relative to the stand while the display is in a portrait orientation in order to limit contact between the portrait-oriented display and the support surface or stand. 
     These and other embodiments are discussed below with reference to the figures. Those skilled in the art will readily appreciate that the detailed description given herein with respect to these figures is for explanatory purposes only and should not be construed as limiting. Features from one embodiment can be implemented in other embodiments. 
       FIGS. 1-15  show various aspects of a display assembly  100 .  FIG. 1  shows a front view and  FIG. 2  shows a right side view of an electronic display  102  coupled to a support arm  104  that is coupled to a stand  106 .  FIGS. 3-4  show the display  102  coupled to the support arm  104  in a raised position relative to the configuration shown in  FIGS. 1-2 . In  FIGS. 1-4 , the display  102  is shown in a landscape orientation, and in  FIGS. 5-6 , the display is in a raised position and portrait orientation. As used herein, a “landscape orientation” or “landscape position” of a display is an orientation of the display device wherein the viewable display area of the device is elongated in a horizontal direction relative to the vertical direction. A “portrait orientation” or “portrait position” of a display device is an orientation wherein the viewable display area of the device is elongated in a vertical direction relative to the horizontal direction. Generally, a landscape orientation is rotated 90 degrees about a central axis Y relative to a portrait orientation. See  FIG. 8 . 
     The display assembly  100  can be a standalone assembly wherein the support arm  104  and stand  106  are configured to support the weight of a single display  102 . In some embodiments, the display assembly  100  can omit the stand  106 , and the support arm  104  can be coupled to another support surface or ground surface such as, for example, a vertical wall, a horizontal rail extending laterally across the width the display  102  and behind the display  102 , or another similar solid grounding structure. Additionally, stands and support arms having different configurations than those described below may be employed. 
     The display  102  can comprise an electronic display such as a monitor or similar visual output device for displaying information in pictorial form. The display  102  can comprise a display device (e.g., a thin film transistor liquid crystal display (TFT-LCD) with light-emitting diode (LED) or cold-cathode fluorescent lamp (CCFL) backlighting or an organic light-emitting diode (OLED) display), circuitry, a housing (e.g., housing  1420  in  FIG. 14 ) or casing, and a power supply. The display  102  can be configured to connect to a computer using connectors and ports such as a video graphics array (VGA) connector, digital visual interface (DVI) connector, DISPLAYPORT® connector, THUNDERBOLT® connector, wireless electrical communications interfaces, or other related or similar electrical interfaces. 
     The display  102  can comprise a front-facing surface  108  configured to face and display information to the user for viewing. The viewable display area of the display  102  can be viewed through or at the front-facing surface  108 . Thus, the front-facing surface  108  can be referred to as a viewing surface. The front-facing surface  108  can be substantially planar and flat, or it can be curved (e.g., cylindrically concave or convex). The display  102  can comprise a rear-facing surface  110  configured to face away from the user. The support arm  104  can be positioned between the rear-facing surface  110  and the stand  106 . The support arm  104  can be releasably coupled to the display  102  at the rear-facing surface  110  or in rear side portions of the display  102 . A mounting portion  111  of the support arm  104  can connect the display  102  to the support arm  104 . See also  FIGS. 7-12 . 
     The support arm  104  can also be coupled to the stand  106 . The stand  106  can comprise a base  112  configured to extend underneath the display  102  and can comprise a vertical support  114  configured to extend upward from the base  112  and behind the rear-facing surface  110  of the display  102 . The vertical support  114  can have a top end at which the support arm  104  is attached at a stand attachment point  116 . The stand  106  can therefore be referred to as having a generally L-shaped profile with the display  102  being positioned above a base portion  112  of the L-shape, as shown in  FIGS. 2, 4, and 6 . In some embodiments, the stand  106  can comprise a horizontal rail, rail and shuttle, or similar structure extending behind the rear-facing surface  110  and to which the support arm  104  is attached. 
     The support arm  104  can hold the display  102  in place relative to the stand  106  and can keep the display  102  in a user-selected vertical position relative to the stand  106 . The support arm  104  can retain the display in multiple different positions including a lowered position (as shown in  FIGS. 1-2 ) and a raised position (as shown in  FIGS. 3-6 ) with the position of the display  102  remaining static (i.e., without drifting or sagging downward due to the weight of the display  102  pulling down on and rotating the support arm  104 ). A user can provide an input force oriented in a vertical direction to raise the display  102  relative to the stand  106 , as indicated by force F 1  in  FIG. 2 , or the user can provide a vertically-oriented input force F 2  to lower the display  102  relative to the stand  106 , as shown in  FIG. 4 . As the display  102  moves, it can travel through an arc-shaped path with a radius defined by the length of the support arm  104 . The display  102  can, by virtue of a parallel motion linkage in the support arm  104 , remain vertical (e.g., parallel to the vertical support  114 , perpendicular to the base portion  112 , or otherwise remaining in a single angular orientation relative to the stand  106 ) while traveling through the arc-shaped path. 
     A user can also provide an input moment M 1  to rotate the display  102  from a landscape orientation (see  FIG. 3 ) to a portrait orientation or an opposite input moment M 2  to rotate the display  102  from a portrait orientation (see  FIG. 5 ) to a landscape orientation. Moment M 1  is shown as being a counterclockwise moment, and moment M 2  is shown as being a clockwise moment, but the display  102  can be designed to use either direction for moments M 1  and M 2  as long as the moments M 1 , M 2  oppose each other. Additionally, in some embodiments, each moment M 1 , M 2  can be applied to rotate the display  102  between landscape and portrait orientation. For example, a user can apply moment M 1  to turn the display  102  from the landscape orientation of  FIG. 3  to the portrait orientation of  FIG. 5  and can apply a moment in the same direction to continue rotating the display  102  from the portrait orientation back to a landscape orientation (e.g., an upside-down/inverted landscape orientation or the orientation of  FIG. 3 ). 
     Additional detail about the display  102 , support arm  104 , and stand  106  is provided in  FIGS. 7-20 . The support arm  104  can rotate relative to the stand  106  and relative to the display  102  about axes  118  and  120 , as shown by the arrows in  FIG. 8 . In some embodiments, the support arm  104  can rotate independently relative to the stand  106  and independently relative to the display  102 . The support arm  104  can also rotate in a manner keeping the mounting portion  111  parallel to the stand  106 . Accordingly, with the display  102  mounted to the support arm  104 , movement of the support arm  104  can change the vertical position of the display  102 , as shown in  FIGS. 1-4 . 
     The mounting portion  111  of the support arm  104  can comprise a set of laterally-extending latches  122 ,  124 ,  126 , wherein the latches extend laterally (i.e., to the left, right, upward, or downward), or radially, relative to a central axis Y, which extends perpendicularly and centrally through the mounting portion  111 . See  FIGS. 7 and 8 . The mounting portion  111  can also include a central face  128 , a ring-shaped ridge  130  having a first pin  132  and a second pin  134 , an outer face  136  having a third pin  138 , and an edge face  140  adjacent to or through which the latches  122 ,  124 ,  126  extend. See  FIGS. 7-10 . 
     The mounting portion  111  can have a generally circular shape, as shown in the end views of  FIGS. 9 and 10 . In various embodiments, the mounting portion  111  can comprise other shapes, such as an elliptical shape, a triangular shape, a square or other rectangular shape, or another polygonal shape. The general shape of the mounting portion  111  can be configured to match the general shape of a recess in the display  102  with which the mounting portion  111  is mated, providing keyed structures for desired mating of the display  102  with the mounting portion  111 . See  FIGS. 14-17 . Latches  122 ,  124 ,  126  can extend from rounded surfaces such as edge face  140  or from straight surfaces (e.g., on a rectangular shaped mounting portion  111 ). 
       FIG. 7  shows an isometric view of the upper end of the stand  106 , the support arm  104 , and the mounting portion  111 .  FIG. 8  shows a side view of those components.  FIG. 9  shows an end view of the display-facing side of the mounting portion  111 , and  FIG. 10  shows an end view of the arm-facing side of the mounting portion  111 .  FIG. 11  shows a side section view of the mounting portion  111  as taken through section lines  11 - 11  in  FIG. 9 .  FIG. 12  is an end view of the mounting portion  111  with the outermost display-facing surfaces (i.e., central face  128 , ridge  130 , and outer face  136 ) omitted to show detail of the interior of the mounting portion  111 . 
     The central face  128  of the mounting portion  111  can be a generally flat portion of the mounting portion  111  that covers a magnetic assembly  142 . See  FIGS. 9 and 12 . The magnetic assembly  142  can be substantially planar and arranged parallel to the central face  128  within the mounting portion  111 . The magnetic assembly  142  can comprise a first magnetic structure  144 , a second magnetic structure  146 , a third magnetic structure  148 , a fourth magnetic structure  150 , and a fifth magnetic structure  152 . See  FIG. 12 . 
     The first magnetic structure  144  can be positioned centrally aligned with the central axis Y of the mounting portion  111 . The second through fifth magnetic structures can be positioned circumferentially spaced around the first magnetic structure  144 . The first magnetic structure  144  can be circular, as shown, and in some cases can have another polygonal or elliptical shape. The second through fifth magnetic structures can therefore be positioned around a circumference or a perimeter of the polygonal or elliptical shape of the first magnetic structure  144 . In some embodiments, fewer than four additional magnetic structures are positioned around the first magnetic structure  144 . For example, the first magnetic structure  144  can be the only magnetic structure or there can be a total of two, three, or four magnetic structures including the first magnetic structure  144  located centrally within the others. In some cases, the first magnetic structure  144  can be omitted, and the second through fifth magnetic structures (or a subset thereof) can be provided alone. 
     The magnetic structures  144 ,  146 ,  148 ,  150 ,  152  can comprise parts magnetically attracted to other magnetic structures (e.g.,  1302  or  1650 / 1652 / 1654  in  FIGS. 13, 16, and 17 ) in the display. Thus, the magnetic structures  144 ,  146 ,  148 ,  150 ,  152  can comprise permanent magnets (e.g., rare earth magnets), electromagnets, ferrous materials, similar magnetic materials, and combinations thereof. The function of the magnetic structures  144 ,  146 ,  148 ,  150 ,  152  of the mounting portion  111  is described in more detail below in connection with  FIGS. 13 and 16-17 . 
     The ring-shaped ridge  130  can extend away from the central face  128  and the outer face  136  in an axial direction (i.e., parallel to central axis Y). The ridge  130  can be configured to be seated in a groove  1404  (see  FIG. 14 ) in the display  102 . In some embodiments, the ridge  130  can be a recess and the groove  1404  of the display  102  can be a ridge, thereby reversing their roles. The ridge  130  can mechanically prevent the mounting portion  111  from translating laterally relative to the display  102  while the ridge is positioned within the groove  1404 . Thus, with the ridge  130  and groove  1404  mated, the user can be sure that the display  102  is properly positioned on the mounting portion  111  and will not easily slide off of the mounting portion  111  or apply radial pressure to the latches  122 ,  124 ,  126 . In one embodiment, the ridge  130  can have an overall or maximum width/diameter and a minimum width/diameter that are each greater than the overall width/diameter of the magnetic assembly  142 . 
     The first pin  132  can extend from a display-facing surface of the ridge  130  in an axial direction (parallel to the Y axis). As shown in  FIGS. 10 and 11 , the first pin  132  can be a peg or bolt shape extending through the display-facing side of the mounting portion  111  and through the arm-facing side of the mounting portion  111 . The first pin  132  can be seated in a bushing  154  in the mounting portion  111  and can be slidable relative to the bushing  154  and relative to the mounting portion  111 . As explained in further detail below, the first pin  132  can limit movement of the support arm  104  relative to the stand  106  when the release mechanism  156  of the mounting portion  111  is operated. 
     The second pin  134  can extend from the display-facing surface of the ridge  130  in an axial direction. The second pin  134  can be stationary relative to the ridge  130  and can mechanically interface with a second recess  1408  in the housing  1420  of the display  102 , as explained in further detail below. See  FIG. 14 . 
     The outer face  136  can comprise a generally flat surface that is parallel to or in-plane with the central face  128 . The outer face  136  can comprise a high-friction material relative to the ridge  130  and relative to the central face  128 . For example, the outer face  136  can comprise a silicone surface covering that generates relatively high friction when pressed against the display  102 . The high-friction material can help prevent relative sliding between the display  102  and the mounting portion  111  and can reduce scratching or marring of the rear surfaces of the display  102 . Beneath the surface covering, the outer face  136  can comprise a rigid material such as a metal material (e.g., steel or aluminum). 
     The third pin  138  can extend from the outer face  136  in an axial direction. The third pin can be axially retractable into the outer face  136  as the display  102  is rotated relative to the mounting portion  111 . The third pin  138  can be configured to resist or prevent being axially retracted in this manner when the support arm  104  is not in the raised position. The third pin  138  can be prevented from retracting into the outer face  136  unless the release mechanism  156  is operated. 
     The edge face  140  can be a beveled, chamfered, or otherwise angled face surrounding the outer face  136 . The edge face  140  can therefore help guide or funnel the mounting portion  111  into the recess  1400  of the display  102 , as explained in further detail below in connection with  FIGS. 16 and 17 . 
     The release mechanism  156  is shown in  FIGS. 8, 10, and 12 .  FIG. 8  shows a side view,  FIG. 10  shows an outer end view, and  FIG. 12  shows an inside end view. The release mechanism  156  is shown protruding from a rear surface  158  of the mounting portion  111  in a manner that makes it easy to find by blind touch, i.e., by a user&#39;s hand even when the user cannot look behind the display  102  to see the rear surface  158 . In some embodiments, the release mechanism  156  does not protrude or is recessed into the rear surface  158 . The release mechanism  156  can be laterally slidable (i.e., slidable along axis X in  FIG. 10 ) relative to the mounting portion  111  between a first position shown in  FIG. 10  and a second position at position  156 - a  in  FIG. 10 . 
     The release mechanism  156  can be operated to release the display  102  from the mounting portion  111  or to release the display  102  from being locked in the landscape orientation relative to the mounting portion  111 . The release mechanism  156  is coupled, via a pin  160 , to a rotatable ring  162  within the mounting portion  111 . See  FIG. 12 . Sliding the release mechanism  156  to position  156 - a  in  FIG. 10  can therefore cause the rotatable ring  162  to rotate about the central axis Y. Ramped surfaces  164 ,  166  of the rotatable ring  162  can engage portions of the first and third pins  132 ,  138  and can retract them when the rotatable ring  162  is turned (or can allow them to be retracted) into the mounting portion  111 . The ramped surfaces  164 ,  166  can prevent rotation of the ring  162  if the support arm  104  is not at is maximum raised position due to the first pin  132  being prevented from retracting by the locking member  204 . See  FIG. 11  and its related descriptions herein. 
     The rotatable ring  162  can also comprise a first latch pin opening  168 , a second latch pin opening  170 , and a third latch pin opening  172  in which respective first, second, and third pins  174 ,  176 ,  178  of the first, second, and third latches  122 ,  124 ,  126  are located. The first latch pin opening  168  can have a radially ramped surface  180 . Accordingly, as the rotatable ring  162  turns counterclockwise in  FIG. 12 , the first latch pin  174  can be pulled radially inward (i.e., toward the central axis Y while contacting the radially ramped surface  180 ). The first latch  122  is pulled radially inward as the first latch pin  174  is pulled inward. When the rotatable ring  162  moves clockwise, the first latch pin  174  can slide back along the radially ramped surface  180  to the position shown in  FIG. 12  due to a radially-oriented biasing device  182  acting on the first latch  122 . 
     The second latch pin opening  170  can have a ramped surface  184  and a notch  186 . Thus, as the rotatable ring  162  turns counterclockwise in  FIG. 12 , the second latch pin  176  can be pulled radially inward along the ramped surface  184 . The second latch  124  is pulled radially inward as the second latch pin  176  is pulled inward, similar to the first latch  122 . 
     However, once sufficient rotation of the rotatable ring  162  occurs, the second latch pin  176  can be seated in the notch  186  due to the radially-outward-directed biasing force applied by biasing device  188  on the second latch  124 . When the second latch pin  176  is seated in the notch  186 , the rotatable ring  162  is prevented from turning clockwise back to the position shown in  FIG. 12  by interference between the notch  186  and the second latch pin  176 , even though the rotatable ring  162  is biased to the position shown in  FIG. 12  by circumferential biasing structures  190 ,  192 . However, if the second latch pin  176  is moved radially inward, such as by the second latch  124  being forced radially inward by a portion of the recess of the display  102  (e.g., lip  1456  in  FIG. 14 ; see also  FIGS. 18-20 ), the second latch pin  176  can move out of the notch  186 , and the rotatable ring  162  can return to the position shown in  FIG. 12  due to being acted upon by circumferential biasing structures  190 ,  192 . 
     The third latch pin opening  172  can have a circumferential surface  194 , a first inner surface  196 , and a second inner surface  198 . As the rotatable ring  162  turns counterclockwise in  FIG. 12 , the third latch pin  178  can move within the third latch pin opening  172  along the circumferential surface  194 . Unlike the first and second latch pin openings  168 ,  170 , the third latch pin opening  172  does not radially withdraw the third latch  126  because the circumferential surface  194  is not radially ramped. Thus, the third latch  126  remains in the position shown in  FIG. 12  as the rotatable ring  162  is rotated. This can be beneficial because the third latch  126  is positioned at the vertical top and center of the mounting portion  111 . 
     When the display  102  is mounted to the mounting portion  111  and the release mechanism  156  is operated, the first and second latches  122 ,  124  can at least partially retract relative to the edge face  140 , thereby reducing the overall radii of the mounting portion  111  at the positions of the first and second latches  122 ,  124  in a manner permitting the mounting portion  111  to be withdrawn from a recess in the display  102  having a radius less than the radii of the extended first and second latches  122 ,  124 . If the third latch  126  were to withdraw in the same manner as the first and second latches  122 ,  124 , the display  102  could potentially slip off of the mounting portion  111  due to all of the latches  122 ,  124 ,  126  being smaller in radius than the radius of the recess of the display  102 . However, because the third latch  126  does not withdraw upon operation of the release mechanism  156 , the third latch  126  can remain hooked to the recess of the display  102  (i.e., it can remain positioned under a lip structure of the recess, as explained in further detail below), and it can thereby prevent accidental disconnection of the display  102  from the mounting portion  111  by keeping the display  102  “hooked” in place. 
     With the release mechanism  156  triggered into position  156 - a , the first and second latches  122 ,  124  are radially withdrawn, and the third latch  126  is partially radially withdrawable upon pulling the display  102  away from the mounting portion  111 . The third latch  126  is radially withdrawable due to the size of the third latch pin opening  172  providing space for radially inward translation of the third pin  178  up to the second inner surface  198 . The third latch  126  can be radially withdrawn in a manner similar to the first and second latches  122 ,  124  due to the third latch  126  coming into contact with a lip structure surface of the recess of the display  102  (e.g., lip  1456  in  FIGS. 14 and 18-20 ) and at least partially sliding radially inward as a result. 
     The second inner surface  198  can be spaced radially outward relative to the first inner surface  196  to limit the amount of radial withdrawal of the third latch  126  as the mounting portion  111  is pulled from the display  102 . A small amount of protrusion of the third latch  126  relative to the edge face  140  while the display  102  is pulled from the mounting portion  111  can require the user to pull laterally along the central axis Y while also pulling on the display  102  or rotating it upward (similar to force F 1  in  FIG. 1 ) in order to completely remove the display  102  from the mounting portion  111 . This additional upward motion can help ensure that the user is intentionally removing the display  102  when the release mechanism  156  is operated and limits the ability of the display  102  to unintentionally slide off of the mounting portion  111  in a horizontal direction. 
     The first inner surface  196  of the third latch pin opening  172  can be radially closer to the central axis Y relative to the second inner surface  198  thereof so that the third latch  126  can be fully radially retracted into the mounting portion  111  when the display  102  is being mated to the mounting portion  111 . The user therefore can push the display  102  directly (i.e., solely horizontally) onto the mounting portion  111  along central axis Y without first having to hook or hang the display  102  onto the third latch  126 . 
     The latches  122 ,  124 ,  126  can comprise multiple materials. In some embodiments, the radially-outermost portions  200  of the latches  122 ,  124 ,  126  can comprise a non-marking and low-friction material such as plastic (e.g., nylon), elastomer (e.g., rubber), or a similar material. Accordingly, as the latches  122 ,  124 ,  126  slide against surfaces of the display  102 , they can be less susceptible to scratching the finish of the display  102  and can slide against the display  102  with low friction. Other internal surfaces of the latches  122 ,  124 ,  126  can comprise a low-friction material, including, for example, the pins  174 ,  176 ,  178  and runners (e.g.,  202 ) that will contact or slide against surfaces within the mounting portion  111 . Other structures in the latches  122 ,  124 ,  126  can comprise high-strength, load-bearing materials to resist bending or breaking such as, for example, steel or other iron alloys. 
     As shown in  FIG. 11 , when the support arm  104  is in an at least partially lowered position (e.g., as shown in  FIG. 2 ), the first pin  132  can contact a locking member  204  within the support arm  104 . As the support arm  104  is moved to a raised position (e.g., as shown in  FIG. 4 ), the housing  206  and a block  208  of the support arm  104  can rotate about axis  120 . At a sufficient raised angle of the support arm  104 , the block  208  rotates out of contact with an inner surface  210  of the locking member  204 , thereby allowing the inner surface  210  of the locking member  204  to move along the axis of the first pin  132  when the first pin  132  moves toward axis  120  and presses inward on the locking member  204 . The first pin  132  can push against the locking member  204  when the release mechanism  156  is operated and the ramped surface  164  rotates and longitudinally slides the first pin  132 . 
     With the support arm  104  in the raised position and the release mechanism  156  triggered, the first pin  132  and locking member  204  are moved rearward relative to rear surface  158 , and contact between a bottom surface  212  of the locking member  204  and the block  208  prevents the support arm  104  from rotating back to a lowered position. Accordingly, while the first pin  132  and locking member  204  are moved rearward, the display  102  is unable to translate downward relative to the stand  106 . For this reason, the first pin  132  can be referred to as a lockout pin. When the release mechanism  156  moves back to its default/biased position (as shown in  FIG. 12 ), the first pin  132  and locking member  204  can return to the position shown in  FIG. 11 , thereby allowing the block  208  to rotate about the pivot axis  120  to a position behind the locking member  204  (i.e., a position opposite the first pin  132 ) and allowing the entire support arm  104  to rotate as well. The locking member  204  can comprise an elongated central opening  214  configured to allow the locking member  204  to translate relative to a central shaft  216  positioned around the pivot axis  120 . 
       FIG. 13  is a diagram illustrating additional detail about magnetic assemblies  1300 ,  1302  that can be positioned in the display  102  and in the mounting portion  111 . One of the magnetic assemblies  1300 ,  1302  can be positioned in the display  102 , and one can be positioned in the mounting portion  111 . For example, magnetic assembly  1300  can comprise magnetic structures  144 ,  146 ,  148 ,  150 , and  152  in the mounting portion  111 . See  FIG. 12 . 
     The magnetic assemblies  1300 ,  1302  can comprise central magnetic structures  1304 ,  1308  that are each surrounded by peripheral magnetic structures  1306 ,  1310 . The central magnetic structures  1304 ,  1308  can have respective magnetic axes N 1 , N 2  configured to be oriented parallel to or coaxial with the central axis Y of the mounting portion  111 . Thus, the magnetic axes N 1 , N 2  can be coaxial with or parallel to each other. 
     One of the central magnetic structures  1304  can comprise an outward end or face along the magnetic axis N 1  that has a first polarity (i.e., north polarity as shown in  FIG. 13 ), and the other central magnetic structure  1308  can comprise an outward end or face along its axis N 2  having a second, opposite polarity (i.e., south polarity as shown in  FIG. 13 ). The outward ends or faces of the central magnetic structures  1304 ,  1308  can be configured to face each other when the display  102  is mounted to the mounting portion  111 . See also  FIGS. 16-17  and their related descriptions herein. Accordingly, the central magnetic structures  1304 ,  1308  can be attracted to each other when the magnetic assemblies  1300 ,  1302  approach each other. For this reason, the central magnetic structures  1304 ,  1308  can apply a magnetic force to the help the user guide the display  102  and mounting portion  111  into contact with each other when the display  102  is mounted to the mounting portion  111 . This can be beneficial when the user is unable to see the mounting portion  111  and the back of the display  102 , such as when the user is blind-installing the display  102  to the mounting portion  111  (i.e., installing with only the viewing side of the display  102  visible and the rear side of the display  102  being out of view). 
     The peripheral magnetic structures  1306 ,  1310  can each comprise individual peripheral magnetic axes that perpendicularly intersect the magnetic axes N 1 , N 2 . These peripheral magnetic axes are shown as arrows in  FIGS. 13, 16, and 17 . In some embodiments, all of the peripheral magnetic axes of the peripheral magnetic structures  1306 ,  1310  are coplanar, and the magnetic axes N 1 , N 2  perpendicularly intersect the planes of the peripheral magnetic axes. The peripheral magnetic axes can be referred to as radially-oriented poles or radially-oriented polar axes of the peripheral magnetic structures  1306 ,  1310 . In magnetic assembly  1300 , the peripheral magnetic axes can have southern polarity at a radially inward end (relative to magnetic axis N 1 ) of each of the peripheral magnetic structures  1306  and can have northern polarity at a radially outward end thereof. Peripheral magnetic structures  1310  can have reversed polarity relative to peripheral magnetic structures  1306 . Accordingly, in each magnetic assembly  1300 ,  1302 , the peripheral magnetic structures  1306 ,  1310  can have central magnetic structures  1304 ,  1308  having outward-facing end polarity that is opposite the radially-inward polarity of their respective peripheral magnetic structures  1306 ,  1310 . 
     The combined central magnetic structure  1304  and peripheral magnetic structures  1306  can form a magnetic flux that, when approached by central magnetic structure  1308  and peripheral magnetic structures  1310 , helps to align the magnetic axes N 1 , N 2 . The central magnetic structures  1304 ,  1308  can provide a longitudinal pull force toward each other, and the peripheral magnetic structures  1306 ,  1310  can provide a longitudinal pull force in addition to a lateral guiding force that makes each of the peripheral magnetic structures try to align with a corresponding peripheral magnetic structure on an opposite magnetic assembly. Accordingly, the magnetic assemblies  1300 ,  1302  can simultaneously guide each other toward each other in longitudinal and lateral/radial directions. A user carrying the display  102  can therefore feel the magnetic assemblies  1300 ,  1302  pulling the display  102  toward the mounting portion  111  while also pulling the magnetic axes N 1 , N 2  into alignment. 
       FIGS. 14-15  illustrate features of a recess  1400  in a rear-facing surface  110  the display  102 .  FIG. 14  is an isometric view of the recess  1400 . The recess  1400  can comprise a central face  1402 , a groove  1404  having a first recess  1406  and a second recess  1408 , an outer face  1410  having a third recess  1412  and a fourth recess  1414 , and at least one laterally-extending recess  1416 .  FIG. 15  shows a detail isometric view of a portion of the recess  1400  at a bottom end portion  1418  of the laterally-extending recess  1416 , wherein the isometric view of  FIG. 15  is from a different viewing angle relative to  FIG. 14  at box  15  in  FIG. 14 . 
     The central face  1402  of the recess  1400  can be a generally flat portion that covers a magnetic assembly (e.g.,  1300  or  1302 ). See  FIGS. 13-14 . The magnetic assembly of the display  102  can be substantially planar and arranged parallel to the central face  1402  within the housing  1420  of the display  102 . The central face  1402  can have a shape (e.g., circular) and size corresponding to the shape and size of the magnetic assembly it covers, similar to central face  128 . 
     The groove  1404  can be ring-shaped and similar in size to the ring-shaped ridge  130  of the mounting portion  111 . The groove  1404  can be configured to receive the ridge  130 , as explained above in connection with  FIGS. 7-9 . The groove  1404  can comprise a strong load-bearing material such as, for example, steel or another iron alloy. 
     The first recess  1406  can extend circumferentially around and longitudinally into the inner face  1422  of the groove  1404 . The first recess  1406  can be positioned on the groove  1404  to receive the first pin  132  of the mounting portion  111 . When the display  102  is in a landscape orientation, the first pin  132  can be positioned in a first end  1424  of the first recess  1406 . In this position, the first pin  132  can extend fully from the display-facing surface of the ridge  130  (e.g., in the position shown in  FIG. 11 ). Accordingly, the support arm  104  can pivot freely between raised and lowered positions because the locking member  204  is not displaced by the first pin  132  into a position interfering with block  208 . See also  FIG. 11  and related descriptions herein. 
     The first recess  1406  can comprise a ramp surface  1426  between the first end  1424  and a second end  1428  thereof. The second end  1428  of the first recess  1406  can be shallower in depth relative to first end  1424  when compared to inner face  1422 . Accordingly, when the first pin  132  and locking member  204  are prevented from moving by the block  208 , the display  102  cannot rotate from landscape to portrait orientation because the first pin  132  contacts the ramp surface  1426  but cannot withdraw into the ridge  130 . However, with the support arm  104  in the raised position and with the release mechanism  156  triggered, the first pin  132  is able to withdraw when contacting the ramp surface  1426 . Accordingly, the first pin  132  can slide into contact with the second end  1428  of the first recess  1406 . While in contact with the second end  1428 , the first pin  132  cannot extend back out of the ridge  130 , so the bottom surface  212  of the locking member  204  blocks rotation of the block  208  and housing  206  of the support arm  104 . For this reason, the support arm  104  cannot rotate to a lowered position while the display  102  is in the portrait orientation (which corresponds to the first pin  132  contacting the second end  1428 ). In order to return to a lowered position of the support arm  104 , the display  102  must rotate to a landscape orientation with first pin  132  contacting or proximate to the first end  1424  since in that case the bottom surface  212  of locking member  204  can move out of the way of the block  208 . 
     The support arm  104  can require movement of the locking member  204  in order for the first pin  132  to be retracted into the mount portion  111 . The display  102  cannot be removed, and the release mechanism  156  cannot be operated, unless the support arm  104  is at its maximum raised position. The support arm  104  can comprise a counterbalance mechanism that applies a force to move the mount portion  111  upward to counterbalance the weight of the display  102 . With the support arm  104  in the upper-most raised position, the counterbalance does not need to release energy and move the support arm  104  upward as the display  102  is removed from the mount portion  111 . 
     The second recess  1408  can be positioned on the groove  1404  opposite the first recess  1406 . Accordingly, the second recess  1408  can be configured to receive the second pin  134  which is positioned opposite the first pin  132  on ridge  130 . When the mounting portion  111  is positioned in the recess  1400 , the display  102  can be rotated between landscape and portrait orientations with the second pin  134  moving within the second recess  1408 . In landscape orientation, the second pin  134  is positioned near the first end  1430  of second recess  1408 , and in portrait orientation, the second pin  134  is near the second end  1432 . The shape of the second recess  1408  can ensure that the display  102  is only rotated in one direction when moving from the landscape to portrait orientations (e.g., counterclockwise when viewed from the front of the display  102 ) and in the opposite direction when moving from portrait to landscape. An attempt to rotate the display  102  in the wrong direction can cause interference between a side of the second recess  1408  and the second pin  134 . The circumferential length of the second recess  1408  can be about one fourth of the central circumference of the groove  1404 , which corresponds to about 90 degrees of rotation of the display  102  relative to the mounting portion  111 . The second recess  1408  and second pin  134  can be referred to as a pin-and-slot feature for controlling rotation of the display relative to the mount portion. 
     The outer face  1410  can comprise a generally flat surface that is parallel to or in-plane with the central face  1402 . The outer face  1410  can comprise a high-friction material relative to the groove  1404  and relative to the central face  1402 . For example, the outer face  1410  can comprise a silicone or rubber elastomeric covering that generates relatively high friction when pressed against the outer surface  136 . The high-friction material can help prevent relative sliding between the display  102  and the mounting portion  111  and can reduce scratching or marring of rear surfaces of the display  102 . The high-friction material can be referred to as a friction pad and can be attached to the outer face  1410 . The underlying material of the housing  1420  at the outer face  1410  can comprise aluminum except for recesses  1412 ,  1414  which can comprise steel. 
     The third recess  1412  can be positioned on the outer face  1410  and can be substantially similar in size to the third pin  138 . The third recess  1412  can therefore receive the third pin  138  when the display  102  is in the landscape orientation. The sidewalls of the third recess  1412  can prevent the display  102  from rotating to a portrait orientation due to contacting the third pin  138 . Accordingly, when the user wishes to rotate the display  102  to portrait orientation, the release mechanism  156  can be operated to move ramped surface  166  (see  FIG. 12 ) in a manner causing the withdrawal of the third pin  138  relative to the outer surface  136 . The withdrawal of the third pin  138  can remove the third pin  138  from the third recess  1412 , thereby removing its ability to prevent rotation of the display  102  relative to the central axis Y. 
     The fourth recess  1414  is also positioned on the outer face  1410  at a position circumferentially spaced away from the third recess  1412 . The fourth recess  1414  can be positioned at a circumferential distance of about one-fourth of the central circumference of the outer face  1410 , which corresponds to about 90 degrees of rotation of the display  102  relative to the mounting portion  111 . Accordingly, since the third recess  1412  aligns with the third pin  138  in landscape orientation, the fourth recess  1414  aligns with the third pin  138  in portrait orientation since portrait orientation is about 90 degrees rotated relative to landscape. In this manner, the third pin  138  can prevent rotation of the display  102  relative to the mounting portion  111  while the display  102  is in portrait orientation. In order to move the display  102  back to landscape orientation, the release mechanism  156  can be triggered to withdraw the third pin  138  out of the fourth recess  1414  so that the display  102  can return to a position where the third pin  138  is in the third recess  1412  again. 
     The at least one laterally-extending recess  1416  (i.e., lateral recess) can extend circumferentially around substantially the entire circumference of the recess  1400 . The lateral recess  1416  can receive the latches  122 ,  124 ,  126  when the display  102  is mated with the mounting portion  111 . 
       FIGS. 16-17  show diagrammatic side views of a mounting portion  1611  interacting with a recess  1600  in a housing  1620  of a display. Some features of the mounting portion  1611  and housing  1620  are omitted or simplified in these views as compared with mounting portion  111  and housing  1420 . However, the mounting portion  111  and housing  1420  can operate similar to mounting portion  1611  and housing  1620 . As the recess  1600  approaches the mounting portion  1611 , the magnetic structures  1644 ,  1646 ,  1648 ,  1650 ,  1652 ,  1654  can be attracted to each other and can align the center of the mounting portion  1611  with the center of the recess  1600 . The latches  1622 ,  1624  of the mounting portion  1611  can be extended relative to the sides of the mounting portion  1611 . The latches  1622  can correspond in function to the latches  122 ,  124 , and  126 . 
     The mounting portion  1611  can contact the housing  1620  with the latches  1622 ,  1624  contacting at least one ledge or lip  1656 . The lip  1656  can extend radially inward over the laterally-outward-extending recess  1616 . Front surfaces  1658  of the latches  1622 ,  1624  can be sloped or curved in a manner that, when there is contact between the front surfaces  1658  and the lip  1656 , the latches  1622 ,  1624  can retract relative to the housing of the mounting portion  1611 . In some embodiments, the front surfaces  1658  are sloped at about a 15-degree angle rearward relative to the plane of the central face  128 . The front surfaces  1658  and the edge face  140  can be sloped in a manner wherein if those surfaces  140 ,  1658  contact the outer rim of the lip  1656  off-center, their narrowed central diameters can guide the mounting portion  1611  into central alignment with the recess  1600  similar to a funnel. 
     As the mounting portion  1611  continues to enter the recess  1600 , the latches  1622 ,  1624  fully retract until they are at an axial depth in the recess  1600  corresponding to the laterally-outward-extending recess  1616 . At that depth, they can spring back radially outward due to biasing structures (e.g.,  182 ,  188 ) acting on the latches. Therefore, the latches  1622 ,  1624  can retain the mounting portion  1611  within the recess  1600  by mechanical interference with the lip  1656 . The laterally-outward-extending recess  1616  can extend circumferentially around the recess  1600  under the lip  1656  so that the housing  1620  can rotate relative to the mounting portion  1611  while the latches  1622 ,  1624  retain the display to the mounting portion  1611 . The ridge  1630  and groove  1604  can also be mated with each other when the mounting portion  1611  is fully inserted into the recess  1600  in a manner that keeps the mounting portion  1611  from sliding laterally relative to the lip  1656 . 
     When the display  102  is mated with the mounting portion  111 , the latches  122 ,  124 ,  126  can be positioned in the lateral recess  1416  below a lip  1456  extending around the recess  1400 . See  FIGS. 14-15 . The display  102  can rotate about the central axis Y with the latches  122 ,  124 ,  126  secured by the lip  1456 . 
     Magnetic structures  1644 ,  1646 ,  1648 ,  1650 ,  1652 ,  1654  can also be in a state of low or minimum potential energy (i.e., next to each other) when the mounting portion  1611  is inserted into the recess, and those magnetic structures can provide resistance to longitudinal withdrawal of the mounting portion  1611  from the recess  1600 . As shown in  FIG. 17 , central magnetic structures  1644 ,  1650  and peripheral magnetic structures  1646 ,  1648 ,  1652 ,  1654  can be positioned next to similar structures having opposite polarity. A ferrous plate  1660  can be positioned next to magnetic structures  1650 ,  1652 ,  1654  on an internal side thereof. The ferrous plate  1660  can at least partially help to redirect the magnetic flux of the magnetic structures  1650 ,  1652 ,  1654  away from the inside of the display housing  1620  and outward toward the recess  1600 . A similar ferrous plate can be positioned on the inner side of the magnetic structures  1644 ,  1646 ,  1648  of the mounting portion  1611  to perform a similar flux forming function. 
     As shown in  FIG. 18 , the second latch  124  can be positioned under a latch retention surface  1802  of the lip  1456  when the mounting portion  111  is fully inserted into the recess  1400 . As described above, operating the release mechanism  156  can retract the latches  122 ,  124 . The second latch  124  can have its pin  176  held in the notch  186  in a manner that keeps the release mechanism  156  from resetting via the biasing structures  190 ,  192 . Therefore, the lip  1456  can comprise an inner-facing ramped portion  1800  as shown in the diagrammatic side section view of  FIGS. 18-20 . 
     The latch  124  can be partially radially inwardly withdrawn by operation of the release mechanism  156 , and this partial withdrawal can move the latch  124  from a radially-external position wherein the latch  124  contacts a non-ramped latch retention surface  1802  (see  FIG. 18 ) to a position next to the ramped portion  1800  (see  FIG. 19 ). With the latch  124  contacting the ramped portion  1800  and with a longitudinal withdrawal force applied to the display  102 , the lip  1456  can urge the latch  124  radially inward further than the release mechanism  156 , thereby moving the pin  176  radially inward and allowing the release mechanism  156  to reset. However, once the second latch  124  is in contact with the ramped portion  1800 , the first latch  122  is already contacting the lip  1456 . Therefore, the latches  122 ,  124  are constrained by the lip  1456  from extending back radially outward under the lip  1456 . See  FIG. 20 . The user can therefore pull the display  102  away from the mounting portion  111  by pulling along the central axis Y while pivoting the top of the recess  1416  upward and away from the third latch  126 . In this manner, removing the display  102  from the mounting portion  111  can automatically reset the release mechanism  156 . Thus, the release mechanism  156  is immediately able to latch to a display again after a display (e.g.,  102 ) is removed. 
     Referring again to  FIGS. 14-15 , the lateral recess  1416  can have a bottom end portion  1418  wherein the lateral recess  1416  does not extend as far from the central axis Y as other portions of the lateral recess  1416 . When the display  102  is positioned in landscape orientation, the second latch  124  is positioned in the lower left section of the lateral recess  1416  as seen in  FIG. 14 . When preparing to rotate to portrait orientation, the user can trigger the release mechanism  156 , thereby partially withdrawing the second latch  124  until the second pin  176  is within notch  186  and the first and third pins  132 ,  138  are withdrawn. Accordingly, the display  102  can be turned about the central axis Y. Through that motion, the bottom end portion  1418  can rotate about 90 degrees clockwise in  FIG. 14  while the second latch  124  remains stationary. The bottom end portion  1418  can have a first ramp  1458  that therefore comes into contact with the second latch  124  as the display  102  is rotated to portrait orientation. The first ramp  1458  gradually pushes in the second latch  124  in a manner that moves the second pin  176  inward relative to the notch  186  and releases the rotatable ring  162 . Accordingly, the release mechanism  156  can automatically reset (via the biasing structures  190 ,  192 ) while the display  102  is rotated from landscape orientation to portrait orientation. With the release mechanism  156  reset, the latches  122 ,  124  can automatically re-extend and keep the display  102  on the mounting portion  111  in portrait orientation. 
     In similar fashion, when the display  102  is in portrait orientation, the release mechanism  156  can be operated to withdraw the third pin  138  in a manner permitting the display  102  to move about the central axis Y while still engaging the mounting portion  111 . Triggering the release mechanism  156  again traps the pin  176  in the notch  186 . Rotating a second ramp  1460  of the bottom end portion  1418  of the lateral recess  1416  against the second latch  124  therefore pushes in the second latch  124  and resets the release mechanism  156 . In other words, the second ramp  1460  moves from a position on the left side of  FIG. 14  to a bottom side of  FIG. 14  and, in that movement, contacts and pushes the second latch  124  radially inward. Accordingly, the release mechanism  156  can automatically reset while the display  102  is rotated from portrait orientation to landscape orientation. With the release mechanism  156  reset, the latches  122 ,  124  can automatically re-extend and keep the display  102  on the mounting portion  111  in landscape orientation. 
       FIG. 21  shows an isometric view of a support arm  2104  having an alternate embodiment of a mounting portion  2111 . In this embodiment, the mounting portion  2111  comprises four circumferentially spaced apart and radially-retractable latches  2122  that can function similar to first latch  122 . The mounting portion  2111  also has a non-retractable latch  2170  positioned at a top end. Accordingly, four retractable latches can be implemented on a mounting portion  2111 . Not all of the latches are equally spaced apart, as shown by the non-retractable latch  2170  being closer to two of the other latches  2122 . The non-retractable latch  2170  can require a display to be rotated or tilted relative to the mounting portion  2111  in order for the latch  2170  to be rotated under a lip in a rear recess of the display. In some variations, the mounting portion  2111  can comprise more or fewer than four retractable latches  2122 . 
       FIG. 22  shows an isometric view of a support arm  2204  having an alternate embodiment of a mounting portion  2211 . In this embodiment, the mounting portion  2211  can comprise a central protrusion  2230  with a side surface  2232  in which a set of six radially-retractable pins  2234  are positioned. The set of pins  2234  can be radially retractable in response to actuation of a release mechanism similar to mechanism  156 . The pins  2234  can have circular end surfaces, wherein insertion of the protrusion  2230  into a similarly-sized recess in the display can cause the pins  2234  to be pressured inward by a lip of the recess. The pins  2234  can be biased radially outward, wherein once the protrusion  2230  is fully inserted into the recess, the pins  2234  can return to the extending position shown in  FIG. 22 . In some configurations, the pins  2234  can be ball bearings, and the pins  2234  can therefore roll in position on the protrusion  2230  in a manner that reduces friction between the protrusion  2230  and a recess lip into which the protrusion  2230  is inserted. 
       FIGS. 23-30  show various features of another embodiment of a display mounting device. The display mounting device can be referred to as a display mounting adapter  2300  that allows a display having the features of display  102  to be attached to and supported by a generic support arm. For example, the display mounting adapter  2300  can be used to mount the display  102  to a standard VESA mount having four mounting points spaced at predetermined or standardized positions (e.g., a 200 by 200 millimeter square, a 400 by 400 mm square, a 400 by 200 mm rectangle, or another standard size).  FIG. 23  shows an inside (i.e., front side or front-facing) view of the display mounting adapter  2300 , and  FIG. 24  shows an outside (i.e., back side or rear-facing) view thereof. 
     The mounting points of the generic support arm can be spaced apart in a manner that corresponds to the mounting points  2302  on a mounting plate  2304  of the mounting adapter  2300 . See  FIG. 24 . The mounting points  2302  can be threaded openings in the mounting plate  2304  (or in inset receptacles  2306  of the mounting plate) to receive fasteners that extend through or from the generic support arm. 
     The display mounting adapter  2300  can comprise a mounting portion  2311  having a shape comparable to mounting portion  111  and configured to extend into a similar recess (e.g.,  1400 ) of the display  102 . The mounting portion  2311  can comprise three latches  2312  that are radially movable between an unlocked or retracted configuration (shown in  FIGS. 23-26 ) and a locked or extended configuration (shown in part in  FIG. 29 ). In the locked or extended configuration, the latches  2312  extend from an edge face  2340  of the mounting portion  2311 , similar to the latches  122 ,  124 ,  126  of  FIG. 9  extending from edge face  140 . Thus, the latches  2312  can be positioned within recess  1400  and can be retained by a lip  1656 . When in the unlocked or retracted configuration, the latches  2312  can be withdrawn to a radial size that allows the mounting portion  2311  to be removed from the recess  1400 . 
     The mounting portion  2311  can comprise a front plate  2314  (see  FIG. 23 ) and a back plate  2316  (i.e., rear housing; see  FIG. 24 ). The front plate  2314  can comprise a raised ridge or retention ring  2318  that protrudes forward from an inner face  2320  and an outer face  2322  that have sizes and functions similar to corresponding components of mounting portion  111 . The outer face  2322  can be covered with a high friction material. The front plate  2314  can have openings through which two clocking protrusions  2324 ,  2326  can extend. 
       FIG. 25  shows an isometric view of the display mounting adapter  2300  with the front plate  2314  omitted.  FIG. 26  shows a front end view of the mounting portion  2311  with the front plate  2314  and two lower latches  2312  omitted. The latches  2312  can each comprise an outer body  2328 , an inner body  2330 , and a pair of biasing devices  2332 . The latches  2312  can interact with a rotatable cam  2334  at the center of the mounting portion  2311 , as described below. 
     The rotatable cam  2334  can have a set of radially spiraling cam openings  2336 , wherein one cam opening  2336  is provided for each latch  2312 . The inner body  2330  of the latch  2312  can have a cam follower stem  2338  (see  FIG. 27  which shows an isometric rear view of the inner body  2330 ) that extends longitudinally inward from the inner body  2330  into and through the cam opening  2336 . A follower stem  2338  is shown in the lower right portion of  FIG. 26  that is isolated from the rest of its associated inner body to illustrate its interaction with the cam opening  2336 . 
     The cam  2334  can be rotated about the longitudinal axis (similar to axis L) of the mounting portion  2311  upon rotation of a rotatable toggle  2342  on the back of the mounting plate  2304 . See  FIG. 24 . The rotatable toggle  2342  can be rotated between a first, unlocked position (shown in  FIG. 24 ) and a second, locked position that is 90 degrees rotated clockwise about the longitudinal axis relative to the first, unlocked position. The cam  2334  is in the unlocked position in  FIG. 26  and is in the locked position in  FIG. 29 . 
     Each cam opening  2336  can have a width sufficient to receive the diameter or width of the follower stem  2338 . As the cam  2334  rotates, the follower stems  2338  can contact the sides of the spiral shapes of the cam openings  2336  and slide along the cam openings  2336  radially inward or outward. Counterclockwise motion of the cam  2334  (as viewed in  FIG. 26 ) can move the follower stems  2338  (and accordingly the inner bodies  2330  of the latches  2312 ) radially outward, and clockwise motion of the cam  2334  (as viewed in  FIG. 29 ) can move the follower stems radially inward. The cam openings  2336  can each comprise a locked end  2344  and an unlocked end  2346 . When a follower stem  2338  is positioned at the locked end  2344 , the latch  2312  can be in the extended or locked position (as shown in  FIG. 29 ), and when the follower stem  2338  is at the unlocked end  2346 , the latch  2312  can be in the retracted or unlocked position. 
     The movement of the inner body  2330  is defined by the movement of the follower stem  2338  on the inner body  2330  relative to the cam openings  2336  and by interference with a post  2348  that extends through a guide slot  2350  on the inner body  2330 . See  FIGS. 26-27 . The inner body  2330  can also contact the pair of biasing devices  2332  that bias the outer body  2328  of each latch  2312  away from the inner body  2330 . The biasing devices  2332  can also ensure that the inner body  2330  is biased into contact with an inner radial surface of each cam opening  2336 . 
     At the unlocked end  2346  of each cam opening  2336 , a detent  2352  can be formed on the radially inward surface of the cam opening  2336 . Accordingly, as the cam  2334  is rotated by the rotatable toggle  2342 , the cam followers  2338  can slide along the inner radial surface of each cam opening  2336  while gradually moving radially outward. Upon reaching the unlocked end  2346 , the cam followers  2338  can be biased and moved slightly radially inward into the detents  2352 . The biased movement of the cam followers  2338  can give a “click” feel or similar feedback to the user turning the rotatable toggle  2342  to indicate by touch or tactile vibration that the cam  2334  has been completely rotated to its extreme locked rotated position. The detent  2352  can also provide some minor resistance to rotating the cam  2334  back to the unlocked rotated position. Turning the cam  2334  toward the unlocked position can require the user to input a sufficient torque to the toggle  2342  to cause the cam followers  2338  to overcome the radially-inwardly-directed biasing forces applied by the biasing devices  2332  so that they move radially outward from the detents  2352  and into the rest of the cam openings  2336 . 
     The movement of the inner body  2330  and the biasing forces applied by the biasing devices  2332  can control the movement of the outer body  2328  of each latch  2312 . Outer bodies  2328  can radially translate and can each be constrained to only translate radially by a round pin  2354  on the back plate  2316  that fits within a narrow slot  2356  on the outer body  2328  and a second, lozenge-shaped pin  2358  on the back plate  2316  that fits within a second, wider slot  2360  on the outer body  2328 . See  FIGS. 25-26 and 29 . The round pins  2354  can extend through the cam  2334 . 
     The inner body  2330  can be positioned within an aperture or recess of the outer body  2328 . When the inner body  2330  moves from the locked position to the unlocked position, it can contact a sidewall  2362  of the aperture and thereby push the outer body  2328  radially inward as it moves radially inward. Accordingly, the inner body  2330  can move the outer body  2328  inward to the unlocked position. While it approaches the sidewall  2362 , the inner body  2330  can permit a small amount of extension of the biasing devices  2332 , as shown by comparing the lengths of the biasing devices  2332  in  FIGS. 26 and 29 . 
     The outer body  2328  can be constantly biased radially outwardly away from the center of the mounting portion  2311  by the biasing devices  2332  and can be drawn radially inward as the inner body  2330  moves radially inward. The radial distance from the central longitudinal axis of the mounting portion  2311  to the unlocked ends  2346  can therefore be small enough to cause the inner body  2330  to move into contact with the outer body  2328 . If it were not small enough, the inner body  2330  could “float” within the outer body  2328  without the outer body  2328  moving. This “floating” feature can beneficially prevent the outer body  2328  from retracting radially inward when the rotatable toggle  2342  only makes a small amount of rotation from the locked to the unlocked position. Instead, the toggle  2342  needs to be rotated a sufficient portion of its overall travel range in order for the inner body  2330  to be pulled in far enough to contact the sidewall  2362  and to begin to retract the outer body  2328 . 
     Each latch  2312  can also have a pair of bosses  2364  extending through the outer body  2328 . The bosses  2364  can be positions where fasteners join the front plate  2314  and the back plate  2316 . The bosses  2364  can extend through the outer body  2328  without contacting the outer body  2328 . The bosses  2364  can be positioned through the outer body  2328  in order to ensure that they are sufficiently close to each other to limit bending of the front plate  2314 . When the display mounting adapter  2300  is in the locked position, the latches  2312  can extend under a ledge or lip of the display recess. If the adapter  2300  is pulled longitudinally away from the display recess while in the locked state, the latches  2312  can contact the ledge or lip and can therefore mechanically interfere with and prevent the withdrawal of the adapter  2300 . The latches  2312  are sandwiched between the front and back plates  2314 ,  2316 , so an attempted withdrawal from the display recess can apply a force to the outer body  2328  that makes the outer body  2328  come into contact with the front or back plate. By having the bosses  2364  near each other and extending through the outer body  2328 , that force applied to the front or back plate by the outer body  2328  is less likely to be able to sufficiently bend or bow the front or back plate  2314 ,  2316  in a manner that could break the plate or cause the outer body  2328  to slip out from between the plates. Accordingly, the width between the bosses  2364  can be less than the overall lateral width of the outer body  2328  through which they extend. 
     The cam  2334  can also be biased at the extreme unlocked position.  FIG. 28  shows a side section view of the cam  2334  and the back plate  2316  at section lines  28 - 28  in  FIG. 26 . The rear-facing surface  2366  can have a recessed detent  2368  in it that is configured to receive a biased ball  2370  housed by the back plate  2316  with a biasing device  2372  in a back plate recess  2374 . 
       FIG. 30  shows a similar section view (taken from section lines  30 - 30  in  FIG. 29 ) wherein when the cam  2334  is not in the unlocked position (e.g., it is in the locked position), the recessed detent  2368  has been rotated out of alignment with the ball  2370  such that the ball  2370  is retracted relative to the position shown in  FIG. 28 . As a result, when the user rotates the toggle  2342  out of the unlocked position (e.g., to the position of  FIG. 30 ), the user must apply sufficient torque to the toggle  2342  to overcome the biasing force provided to the ball  2370  by the biasing device  2372  and to retract the ball  2370  into the back plate  2316  out of the recessed detent  2368  and into contact with a flat portion of the rear-facing surface  2366 . In this manner, the user can feel a “bump” or “click” feedback when moving into or out of the extreme unlocked position that is caused by movement of the ball  2370  relative to the cam  2334 . Additionally, the biased ball  2370  can require a minimum torque to be applied to the toggle  2342  in order to move out of the unlocked position. 
     A ball  2370 , biasing device  2372 , and recess  2374  can be provided at multiple points around the cam  2334 . In some embodiments, there are three such biasing features in the back plate  2316  and three corresponding recessed detents  2368  in the cam  2334 . The detents  2368  can be circumferentially spaced around the circumference of the cam  2334  at positions about 120 degrees separated from each other. 
     A biasing device (not shown) can bias the second clocking protrusion  2326  away from the back plate  2316  in a longitudinal direction (i.e., toward the display recess  1400 ) similar to biasing device  2372 . Accordingly, the second clocking protrusion  2326  can be biased into contact with a surface of the fourth recess  1414  of the display housing  1420 . The second clocking protrusion  2326  and fourth recess  1414  can therefore provide a path for static electricity to pass between the adapter  2300  and the display housing  1420  (i.e., a chassis ground) by being in constant contact with each other while the adapter  2300  is mounted despite variations in dimensions due to manufacturing tolerances and movement between the devices. In some embodiments, the first clocking protrusion  2324  can also be biased away from the back plate  2316  in a longitudinal direction, similar to biasing device  2372 . The first clocking protrusion  2324  can therefore be biased into contact with a surface of the third recess  1412 . Bushings  2329  can laterally reinforce and longitudinally guide the movement of the first and second clocking protrusions  2324 ,  2326 . 
     In some embodiments, the display mounting adapter  2300  can include the magnetic assembly  142 . In some cases, the magnetic assembly  142  can be omitted. The magnetic assembly  142  can be optional since the display mounting adapter  2300  can be attached to the display  102  while the display  102  is at rest (e.g., face down on a support surface) rather than being carried by a user to be mounted to the display mounting adapter  2300 . Alternatively, the magnetic assembly  142  can be included so that a generic support arm can have the display mounting adapter  2300  already positioned on it when the display  102  is moved to latch onto the display mounting adapter  2300 . 
       FIG. 31  shows a front end view of another embodiment of a mounting portion  3111  of a support arm  3104  (see  FIG. 32 ) with some components omitted and with the mounting portion in a locked state. Some parts, such as the front plate, have been omitted, and some parts have been simplified for this diagram. Parts of mounting portion  3111  having corresponding names to the parts of mounting portion  111  above can have corresponding functions. 
     In  FIG. 31 , the rotatable ring  3162  can comprise a radial unlocking protrusion  3101  configured to rotate about the longitudinal axis (i.e., L) of the mounting portion  3111  upon operation of a release mechanism (e.g.,  156 ). The radial unlocking protrusion  3101  can therefore rotate from a position out of contact with a retractable pin  3138 , as shown in  FIG. 31 , to a position in contact with the pin  3138 , as shown in  FIG. 33 . The rotatable ring  3162  can be biased into the rotated position shown in  FIG. 31  by biasing devices similar to devices  190 ,  192 . 
     The retractable pin  3138  can comprise an engagement surface  3139  configured to come into contact with the unlocking protrusion  3101 . In some embodiments, the engagement surface  3139  can be a rounded, ramped, or sloped surface, wherein as the unlocking protrusion  3101  gradually comes into contact with the engagement surface  3139 , the retractable pin  3138  can gradually be pushed longitudinally rearward (i.e., it can recede relative to the front plate) in a manner similar to how the third pin  138  recedes due to engagement with ramped surface  166 . The retractable pin  3138  can be biased in a longitudinally forward direction, wherein rotation of the unlocking protrusion  3101  out of contact with the engagement surface  3139  can allow the retractable pin  3138  to return to its default, forward-extended position. Accordingly, the retractable pin  3138  can provide a similar function to the third pin  138  by extending into a recess  1412 / 1414  when in the locked state and by receding from the recess when the mounting portion  3111  transitions to the unlocked state. 
     Referring again to  FIG. 31 , the mounting portion  3111  can comprise an internal pin  3132  that extends through the back plate of the mounting portion  3111  behind the rotatable ring  3162 .  FIG. 32  shows a diagrammatic side section view of the mounting portion and support arm as taken through section lines  32 - 32  in  FIG. 31  which extend centrally through the internal pin  3132 . In  FIG. 32 , some parts are shown simplified or omitted to provide improved clarity. As shown in  FIG. 32 , the rotatable ring  3162  is positioned forward of the internal pin  3132 . The internal pin  3132  extends from the mounting portion  3111  into the housing  3206  of the support arm  3104 . The internal pin  3132  can contact a locking member  3204  (i.e., a locking key or biased lockout key). 
     With the support arm  3104  in a lowered position, as shown in  FIG. 32 , the locking member  3204  can be prevented from movement along longitudinal axis L due to contact between end portion  3210  and block  3208  of the housing  3206 , similar to locking member  204  and block  208  of  FIG. 11 . The internal pin  3132  is accordingly also not translatable relative to the mounting portion  3111  along axis L because of its contact with the locking member  204 . 
     As shown in  FIG. 32 , the rotatable ring  3162  can comprise a first portion of a rear surface  3165 , a second portion of a rear surface  3167  having a different longitudinal position along axis L, and a ramped portion  3169  linking the two portions of the rear surface  3165 ,  3167 . With the support arm  3104  in a lowered position, as shown in  FIG. 32 , the internal pin  3132  protrudes into the mounting portion  3111  to a longitudinal position forward of the second portion of the rear surface  3167 . Accordingly, the rotatable ring  3162  is prevented from rotating in the direction D shown in  FIG. 32  due to interference contact between the internal pin  3132  and the ramped portion  3169  of the rear surface. Direction D is also shown in  FIG. 31 . As a result, in the lowered position of the support arm  3104 , the rotatable ring  3162  is prevented from rotating and the internal pin  3132  is prevented from retracting rearward along axis L. The mounting portion  3111  therefore cannot be changed to the unlocked configuration and cannot be removed from a display (e.g.,  102 ). 
       FIG. 33  shows a partial front end view of the mounting portion of  FIG. 31  with the mounting portion in an unlocked state. The latches (e.g.,  3122 ) are retracted. The internal pin  3132  is also shown hidden behind the rotatable ring  3162 .  FIG. 34  shows a side section view of the mounting portion and support arm as taken through the position of section lines  34 - 34  in  FIG. 33 . In  FIG. 34 , the support arm  3104  has been rotated about pivot axis  3120  to a raised position. The block  3208  has therefore been rotated away from the end portion  3210  of the locking member  3204 . Freeing the end portion  3210  permits the locking member  3204  to translate relative to the housing  3206  along axis L. Therefore, in the raised position, rotation of the ramped portion  3169  of the rotatable ring  3162  into contact with the internal pin  3132  can drive the internal pin  3132  in an axially rearward direction, thereby driving the locking member  3204  rearward, as shown and indicated by the small axial arrows in  FIG. 34 . Rotation of the rotatable ring  3162  can permit unlocking of the mounting portion  3111  and removing a display from the mounting portion  3111 . 
     In some embodiments, when the mounting portion  3111  is unlocked, the display can be removed from a first orientation (e.g., landscape) and can be reattached in a second orientation (e.g., portrait). In some embodiments, unlocking the mounting portion  3111  allows the display to be rotated while positioned on the mounting portion  3111  (e.g., while the mounting portion  3111  is within the recess  1400 ) from one orientation to another. When the rotatable ring  3162  resets to its default/biased locked configuration, the internal pin  3132  can be pushed forward again by a biasing device  3213  at the locking member  3204 , thereby returning the rotatable ring  3162 , internal pin  3132 , and locking member  3204  to their state shown in  FIG. 32 . 
     While the rotatable ring  3162  is rotated into the unlocked position, as shown in  FIG. 34 , the mounting portion  3111  can be rotated about the pivot axis  3120  within a limited angular range of motion indicated by angle R 1 . Thus, the display can be tilted about the pivot axis  3120  within the same angular range of motion while the mounting portion  3111  is unlocked. 
     The mounting portion  3111  can comprise a second pin  3135  as shown in  FIGS. 31 and 35 .  FIG. 35  shows a side section view of the mounting portion  3111  and support arm  3104  as taken through the position of section lines  35 - 35  in  FIG. 31  and with the mounting portion inserted into a recess  1400  of a display housing  1420 . The second pin  3135  can be biased in a longitudinally forward direction by the locking member  3204  and biasing device  3213  in a manner similar to internal pin  3132 . When the display is in a landscape orientation, the second pin  3135  can extend into contact with a first rear surface  3137  of the recess of the display housing. When the display is in a portrait orientation, as shown in  FIG. 35 , the second pin  3135  can contact a second rear surface  3141  of the display housing that is longitudinally closer to the pivot axis  3120  than the first rear surface  3137 . The display housing can include a ramped surface  3141  to allow the second pin  3135  to gradually be pushed longitudinally rearward from the first rear surface  3137  as the display rotates in direction D (see also  FIG. 31 ). The second pin  3135  can push the locking member  3204  rearward, as indicated by the small arrows in the pin  3135  and locking member  3204  in  FIG. 35 , and the locking member  3204  can therefore prevent the support arm  3104  from moving to a lowered position due to interference with the block  3208 . Accordingly, positioning the display in a portrait orientation can prevent the support arm from lowering, thereby preventing the display from coming into contact with a support surface. 
     The display can be tilted about the pivot axis  3120  while in the portrait orientation within a range of angular motion defined by angle R 2 . The range of motion of R 2  can be greater than the range of motion defined by angle R 1 . In this manner, the range of motion of angle R 1  corresponds to a reduced range of motion possible while the display is transitioned from landscape to portrait (or vice versa). This can help prevent the corner of the display from tilting into contact with a support surface while the display is rotating from landscape to portrait (or vice versa). Thus, the range of motion of tilting can be limited to angle R 1  while transitioning between orientations (i.e., while unlocked) and can be limited to the greater angle R 2  while locked in portrait orientation. In the locked portrait or landscape orientations, the display does not extend as close to a support surface as when the display is transitioning between orientations. The difference in the size of the space between the angles R 1  and R 2  can be defined by the shape of the block  3208  or the shape of the locking member  3204  where they come into contact with each other. 
       FIGS. 36 and 37  show side section views of an alternate embodiment of a display housing  3620 .  FIG. 36  shows a side section view of the mounting portion  3611  and support arm  3604  as taken through a section similar to section lines  35 - 35  in  FIG. 31 . The mounting portion  3611  is inserted into a recess  3640  of another embodiment of a display housing  3620  that is in a first rotated orientation. In this case, the second pin  3635  is configured to extend into a pin-receiving recess  3700  in a rear-facing surface  3702  of the recess  3640  of the display housing  3620 . In this state, the support arm  3604  is freely rotatable about the pivot axis  3720  without the end portion  3710  of locking member  3704  contacting a block  3708  of the housing of the support arm  3604 . This first rotated orientation of the display housing  3620  can correspond to a landscape orientation wherein the support arm  3604  can safely move the display up and down without coming into contact with (e.g., crashing into) a support surface. The pin-receiving recess  3700  can be configured to contact the sides of the second pin  3635  if a user attempts to rotate the display housing  3620 , thereby limiting or preventing any possible rotation of the display housing  3620  relative to the support arm  3604 . The display housing  3620  can therefore not be axially rotatable (e.g., about axis L) while attached to the mounting portion  3611 . 
       FIG. 37  shows a side section view of the mounting portion  3611  and support arm  3604  as taken through a section similar to section lines  35 - 35  in  FIG. 31 . The mounting portion  3611  is inserted into a recess  3640  of the display housing  3620  in a second rotated orientation. For example, this rotated orientation can correspond to a portrait orientation. In order to reach this state, the display housing  3620  can be removed from the mounting portion  3611  while in a first orientation (e.g., landscape), can be rotated to the second orientation (e.g., portrait) while removed from the mounting portion  3611 , and then can be reattached in the state shown in  FIG. 37 . As the display housing  3620  is reattached, the second pin  3635  can contact the rear-facing surface  3702  in the recess  3640  and can be pushed longitudinally rearward (e.g., along axis L), as indicated by the arrow in  FIG. 37 . The rearward movement of the second pin  3635  can push the locking member  3704  rearward to a lockout position wherein the rear end  3710  of the locking member  3704  prevents rotation of the support arm  3604  relative to the display housing  3620  due to mechanical interference between the rear end  3710  and the block  3708 , similar to the state shown in  FIG. 35 . 
     While in the lockout position, the support arm  3604  can hold up the display in a manner preventing it from moving downward into contact with a support surface. In some embodiments, the display housing  3620  is prevented from rotating back to the first orientation (e.g., landscape) while in this condition unless the display housing  3620  is first removed from the mounting portion  3611  and reattached in the configuration shown in  FIG. 36 . Upon removal of the display housing  3620  from the configuration shown in  FIG. 37 , the second pin  3635  can be biased forward to the position shown in  FIG. 36  by the locking member  3704  and biasing device  3713 , thereby removing the interference between the locking member  3704  and the block  3708 . 
     To the extent applicable to the present technology, gathering and use of data available from various sources can be used to improve the delivery to users of invitational content or any other content that may be of interest to them. The present disclosure contemplates that in some instances, this gathered data may include personal information data that uniquely identifies or can be used to contact or locate a specific person. Such personal information data can include demographic data, location-based data, telephone numbers, email addresses, TWITTER® ID&#39;s, home addresses, data or records relating to a user&#39;s health or level of fitness (e.g., vital signs measurements, medication information, exercise information), date of birth, or any other identifying or personal information. 
     The present disclosure recognizes that the use of such personal information data, in the present technology, can be used to the benefit of users. For example, the personal information data can be used to deliver targeted content that is of greater interest to the user. Accordingly, use of such personal information data enables users to calculated control of the delivered content. Further, other uses for personal information data that benefit the user are also contemplated by the present disclosure. For instance, health and fitness data may be used to provide insights into a user&#39;s general wellness, or may be used as positive feedback to individuals using technology to pursue wellness goals. 
     The present disclosure contemplates that the entities responsible for the collection, analysis, disclosure, transfer, storage, or other use of such personal information data will comply with well-established privacy policies and/or privacy practices. In particular, such entities should implement and consistently use privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining personal information data private and secure. Such policies should be easily accessible by users, and should be updated as the collection and/or use of data changes. Personal information from users should be collected for legitimate and reasonable uses of the entity and not shared or sold outside of those legitimate uses. Further, such collection/sharing should occur after receiving the informed consent of the users. Additionally, such entities should consider taking any needed steps for safeguarding and securing access to such personal information data and ensuring that others with access to the personal information data adhere to their privacy policies and procedures. Further, such entities can subject themselves to evaluation by third parties to certify their adherence to widely accepted privacy policies and practices. In addition, policies and practices should be adapted for the particular types of personal information data being collected and/or accessed and adapted to applicable laws and standards, including jurisdiction-specific considerations. For instance, in the US, collection of or access to certain health data may be governed by federal and/or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); whereas health data in other countries may be subject to other regulations and policies and should be handled accordingly. Hence different privacy practices should be maintained for different personal data types in each country. 
     Despite the foregoing, the present disclosure also contemplates embodiments in which users selectively block the use of, or access to, personal information data. That is, the present disclosure contemplates that hardware and/or software elements can be provided to prevent or block access to such personal information data. For example, in the case of advertisement delivery services, the present technology can be configured to allow users to select to “opt in” or “opt out” of participation in the collection of personal information data during registration for services or anytime thereafter. In another example, users can select not to provide mood-associated data for targeted content delivery services. In yet another example, users can select to limit the length of time mood-associated data is maintained or entirely prohibit the development of a baseline mood profile. In addition to providing “opt in” and “opt out” options, the present disclosure contemplates providing notifications relating to the access or use of personal information. For instance, a user may be notified upon downloading an app that their personal information data will be accessed and then reminded again just before personal information data is accessed by the app. 
     Moreover, it is the intent of the present disclosure that personal information data should be managed and handled in a way to minimize risks of unintentional or unauthorized access or use. Risk can be minimized by limiting the collection of data and deleting data once it is no longer needed. In addition, and when applicable, including in certain health related applications, data de-identification can be used to protect a user&#39;s privacy. De-identification may be facilitated, when appropriate, by removing specific identifiers (e.g., date of birth, etc.), controlling the amount or specificity of data stored (e.g., collecting location data a city level rather than at an address level), controlling how data is stored (e.g., aggregating data across users), and/or other methods. 
     Therefore, although the present disclosure broadly covers use of personal information data to implement one or more various disclosed embodiments, the present disclosure also contemplates that the various embodiments can also be implemented without the need for accessing such personal information data. That is, the various embodiments of the present technology are not rendered inoperable due to the lack of all or a portion of such personal information data. For example, content can be selected and delivered to users by inferring preferences based on non-personal information data or a bare minimum amount of personal information, such as the content being requested by the device associated with a user, other non-personal information available to the content delivery services, or publicly available information. 
     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.

Metadata:
Filing Date: 20190906
Publication Date: 20220705
Grant Date: 20220705
Priority Date: 20180907
Inventors: LAURENT, KRISTOPHER P.
HAMEL, BRADLEY J.
DEGNER, BRETT W.
NARAJOWSKI, DAVID H.
ZHU, HAO
FARRELL, Lauren M.
VENKATESH, SUNITA
JEZIOREK, PETER N.
SWEET, EDWARD T.
JUNGQUIST, DAVID A.
CHENG, KAREN Y.
ZHANG, XIANG
MCBROOM, Danny L.
MCBROOM, MICHAEL D.
DEFOREST, LAURA M.
Assignee: APPLE INC
CPC Classifications: [{"code": "G06F1/1654", "inventive": false, "first": false, "tree": "[]"}, {"code": "F16M11/12", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/105", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/2021", "inventive": false, "first": false, "tree": "[]"}, {"code": "F16M11/041", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/041", "inventive": true, "first": true, "tree": "[]"}, {"code": "F16M11/08", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K5/0204", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/166", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/06", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K5/0017", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/1601", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/10", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/10", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K5/0234", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M2200/066", "inventive": false, "first": false, "tree": "[]"}, {"code": "G06F1/1601", "inventive": true, "first": true, "tree": "[]"}, {"code": "F16M11/2021", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/166", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/12", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/105", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K5/0204", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K5/0234", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/08", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/10", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/1654", "inventive": false, "first": false, "tree": "[]"}, {"code": "F16M11/041", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F1/1601", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K5/0017", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M2200/066", "inventive": false, "first": false, "tree": "[]"}, {"code": "F16M11/2021", "inventive": false, "first": false, "tree": "[]"}, {"code": "F16M11/06", "inventive": true, "first": false, "tree": "[]"}]
Family ID: 69719562