Abstract:
In one embodiment, collapsible head mounted computer (CHMC) transforms between a collapsed and headset form via joints embedded in the structure of the headset. Joints can be in the back or sides of the CHMC. The CHMC in the headset form is configured to be mounted on the user&#39;s head. The headset form presents the display in front of the user&#39;s eye, or in the peripheral vision of the user&#39;s eye. The CHMC in the collapsed form is designed to minimize empty space to fill a smaller volume. In this manner, the CHMC can be stored away easily. The CHMC may also include an electronics module enabling onboard processing or an onboard power source to operate electronics modules and a display without an outside electrical connection. The CMHC may also employ near field communication on circuit board near joints to allow for communication regardless of the form of the device.

Description:
RELATED APPLICATIONS 
     This application claims the benefit of U.S. Provisional Application No. 61/733,391, filed on Dec. 4, 2012 and U.S. Provisional Application No. 61/638,419, filed on Apr. 25, 2012. 
     The entire teachings of the above applications are incorporated herein by reference. 
    
    
     BACKGROUND 
     A head mounted computer has a display and is mounted to a user&#39;s head to enable the user to view the display. The display shows images to the user, for example, from a computer or a remote device. The user can control the head mounted computer or another remote device, which in turn affects the images shown on the display. 
     SUMMARY 
     Head mounted computers are bulky systems which, due to their shape necessary for head-mounted operation, are difficult to store or operate by hand when not mounted to the user&#39;s head. In one embodiment, the present head mounted computer overcomes these shortcomings of the prior art by providing an articulating support beam to secure a display unit to a user&#39;s head, whereby the joints of the support beam can be used to collapse the head mounted computer into a more compact configuration when removed from the user&#39;s head and still allow the user to view the display. 
     In an example embodiment of the present invention, a collapsible head mounted computer (or collapsible headset/head worn computer) can include a head support beam including two ends and at least one joint to enable articulation between a collapsed form and a headset form. The head support beam, in its headset form, can be configured to wrap around a portion of a user&#39;s head. The portion can be any area of a user&#39;s head sufficient to secure the head support beam using an attachment means or existing head or eyewear on the user. In this position, the two ends of the head support beam can be located at the front of the user&#39;s head, with each of the two ends being on opposite sides of the user&#39;s head. The location of the two ends can be on the outside of the user&#39;s head and adjacent to the user&#39;s left and right eye, respectively. When in collapsed form, by articulating the joint or joints of head support beam, the two ends of the head support beam can be placed closer together than in the headset form. A display support beam can be attached to the head support beam at one end of the display support beam. A display unit can be attached to the other end of the display support beam. In one embodiment, the portion of the head covered by the support beam can be either the back or top of the user&#39;s head. In another embodiment, the portion of the user&#39;s head wrapped by the support beam can include the top or back of the user&#39;s head, or any portion between the top and back. 
     In one embodiment, the head mounted computer can be converted between the collapsed form and the headset form via joints embedded in the structure of the headset. Joints can be at least in the back of the headset or the sides of the headset to fold it into a small compact volume. The head mounted computer in the headset form is configured to be mounted on the user&#39;s head, like a head mounted computer that holds a wearable computing headset. The headset form can present the display in front of the user&#39;s eye, or in the peripheral vision of the user&#39;s eye. The headset in the collapsed form can minimize empty space to fill a smaller volume. In this manner, the physical structure of the headset itself can be stored away easily (e.g., in a pocket). The collapsible headset in the folded form can be similar to a mobile/cellular phone because can be used as a handheld device. In another embodiment, the collapsible headset in the folded form can be arranged such that it surrounds a client device (e.g., cellular phone, smart device, tablet, etc.), so the headset in the collapsed form is a case of the client device. After being converted to the collapsed form, the headset can be converted to the headset form again to be worn as a head mounted computer. 
     In another embodiment, the collapsible head mounted computer can include an electronics module with a processor and a memory coupled to the head support beam. In another embodiment, a power source module can be coupled to the head support beam. 
     In another embodiment, a support device can be attached to the head support beam to secure the head support beam to the user&#39;s head. The support device can be a strap, stabilizer, ear attachment, or meant to connect to existing eyewear. 
     In yet another embodiment, the head support beam can be further configured to have a folded form allowing hand-held operation of the display screen. In this configuration, the head set computer can be interfaced as a hand-held device with the same display unit as placed before the user&#39;s eyes in its mounted configuration. 
     In another embodiment, the head support beam and display support beams can be both of user adjustable length. 
     In another embodiment, the collapsible head mounted computer can further include a central processing printed circuit board (CPUPCB) including a central processing unit (CPU) operatively coupled to a first near field communications (NFC) module. The collapsible head mounted computer can further include an auxiliary printed circuit board (AUXPCB) including one or more auxiliary modules operatively coupled to a second NFC module. The second NFC module can be arranged to be located within a near field range of the first NFC module. The first and second NFC modules can be configured to establish an NFC link, and the first and second NFC modules are housed by the head support beam and separated by the at least one joint. 
     The head mounted computer can also include at least two mounts. Each front can be at a corresponding front end of the head support beam. Each of the two mounts can be configured to mount an accessory. The accessory can include at least one of a camera, sensor, microphone, and illumination device. 
     The head mounted computer can also include at least two sliding stabilizer mounts. Each sliding stabilizer mount can be coupled to opposite sides of the head support beam. The sliding stabilizer mounts can be configured to slide along a defined slide path on the head support beam. The at least two sliding stabilizer mounts can include a brake or other locking mechanism. 
     In another embodiment, the head mounted computer includes at least two stabilizers. Each stabilizer can be configured to mount in a corresponding sliding stabilizer mount. Each stabilizer can be configured to move between an open position (e.g., an unsecured position, a moveable position) and a locked position (e.g., a secured position, a stationary position). The open position can unlock the brake of the corresponding sliding stabilizer mount such that the corresponding sliding stabilizer mount can change its position on the defined slide path. The locked position can lock the brake of the corresponding sliding stabilizer mount such that the corresponding sliding stabilizer mount locks its position on the defined slide path. 
     In another embodiment, a stabilizer can support the head mounted computer by wrapping around the user&#39;s head. The stabilizer can also support the head mounted computer by clipping to a user&#39;s headwear or locking into a predefined receptacle in a user&#39;s headwear. The stabilizer can support the head mounted computer by supporting against the user&#39;s ear. The stabilizers can be removably connected to the stabilizer mounts. 
     In another embodiment, a head mounted computer includes a pressure mounting head support beam configured to wrap around a back of user&#39;s head, the pressure mounting head support beam including two ends, the two ends located at the front of the user&#39;s head, each of the two ends being on opposite sides of the user&#39;s head. The head mounted computer can include a display support beam configured to (a) couple with one of the two ends at a first end of the display support beam and (b) couple with a display at the second end of the display support beam. The head support beam can provide tension towards the user&#39;s head through the two ends, the tension supporting the head mounted computer. The support beam can also provide compression, pressure, inward tension, an inward force, or other force against the user&#39;s head. 
     The head mounted computer can further include a strap with two ends. Each end can be coupled to an opposite one of two mounts at each of the two ends. The strap can provide tension to the user&#39;s head to hold the head mounted computer in place. The strap can also provide compression, pressure, inward tension, an inward force, or other force against the user&#39;s head. The pressure mounting head support beam can have a radius of curvature that matches a radius of curvature of the user&#39;s head to enable retention of the head mounted computer on the user&#39;s head. 
     The pressure mounting head support beam can be configured to have a particular amount of elasticity (e.g., flexibility or adjustability) for mounting and dismounting the pressure mounting head support beam on the user&#39;s head. 
     In another embodiment, a method of displaying visual information to a user can include connecting a display to a first end of a display support beam. The method can further include coupling a second end of the display beam to a head support beam. The head support beam can include two ends and at least one joint to enable articulation of the head support beam between a collapsed form and a headset form. The head support beam in headset form can be configured to wrap around a portion of a user&#39;s head. The two ends can be located at the front of the user&#39;s head. Each of the two ends can be on opposite sides of the user&#39;s head. The head support beam in collapsed form can be configured to place the two ends closer together than the particular distance in headset form. The method can further include displaying visual information to the user on the display. 
     In another embodiment, the method can include operatively coupling a central processing printed circuit board (CPUPCB) including a central processing unit (CPU) to a first near field communications (NFC) module. The method can further include operatively coupling an auxiliary printed circuit board (AUXPCB) including one or more auxiliary modules to a second NFC module. The method can also include arranging the second NFC module to be located within a near field range of the first NFC module. The method can additionally include housing the first and second NFC modules are housed by the head support beam such that the first NFC module and second NFC module are separated by the at least one joint. The method can also include establishing an NFC link between the first NFC module and second NFC module. 
     In another embodiment, a computing device can include a central processing printed circuit board (CPUPCB) including a central processing unit (CPU) operatively coupled to a first near field communications (NFC) module. The computing device can further include an auxiliary printed circuit board (AUXPCB) including one or more auxiliary modules operatively coupled to a second NFC module. The second NFC module can be arranged to be located within a near field range of the first NFC module. The first NFC module and the second NFC module can be configured to establish a NFC link. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The foregoing will be apparent from the following more particular description of example embodiments of the invention, as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating embodiments of the present invention. 
         FIG. 1  is a diagram illustrating an example embodiment of a collapsible headset computer in headset mode. 
         FIG. 2A  is a diagram illustrating an example embodiment of the display boom and display from a top perspective. 
         FIG. 2B  is a diagram illustrating an example embodiment of the display boom and display. 
         FIG. 2C  is a diagram illustrating an example embodiment of the sliding arm of the display. 
         FIG. 2D  is a diagram illustrating an example embodiment of a user wearing the headset computer. 
         FIG. 3A  is a diagram illustrating an example embodiment of horizontal orientation of the display relative to a pivot. 
         FIG. 3B  is a diagram illustrating an example embodiment of the display boom. 
         FIGS. 3C-G  are diagrams illustrating example embodiments of the display boom including different configurations with multiple pivots that are configured to rotate the display or position the display in different locations. 
         FIG. 4A  is a diagram illustrating an example embodiment of the headset computer from a top perspective. 
         FIG. 4B  is a diagram illustrating an example embodiment of the headset computer in a collapsed configuration. 
         FIG. 4C  is a diagram illustrating an example embodiment of the headset computer in another stable configuration. 
         FIG. 4D  is a diagram illustrating an example embodiment of the headset computer in a partially folded state. 
         FIG. 4E  is a diagram illustrating an example embodiment of a soft bend and twist mechanism that couples the display to the boom. 
         FIG. 5  is a diagram illustrating an example embodiment of the headset computer with two joints in a collapsed form from a top perspective. 
         FIG. 6  is a diagram illustrating an example embodiment of the headset computer with two joints in a collapsed form from an angled perspective. 
         FIG. 7  is a diagram illustrating an example embodiment of the headset computer with multiple joints in a headset form from an angled perspective. 
         FIG. 8  is a diagram illustrating an example embodiment of the headset computer with multiple joints in a collapsed form. 
         FIG. 9  is a diagram illustrating an example embodiment of the headset computer, including a rotatable earpiece. 
         FIG. 10  is a diagram illustrating an example embodiment of the headset computer from a back position. 
         FIG. 11  is a diagram illustrating an example embodiment of the headset computer. 
         FIG. 12  is a diagram illustrating an example embodiment of the headset computer. 
         FIG. 13  is a diagram illustrating an example embodiment of the headset computer. 
         FIGS. 14A-C  are diagrams illustrating example embodiments of the P1B optic employed by the headset computer. 
         FIG. 15  is a diagram illustrating an example embodiment of different modes of a transforming collapsible headset. 
         FIG. 16A  is a diagram illustrating an example embodiment of a headset computer employed to use inward tension to mount to the user&#39;s head. 
         FIG. 16B  is a diagram illustrating an example embodiment of the headset computer using inward tension to mount to the user&#39;s head. 
         FIGS. 17A-17B  are high-level schematic diagrams illustrating example embodiments of electrical circuits employing near field communications that can be used to transfer data between electronics modules of a collapsible headset computer. 
         FIGS. 18A-18C  are example arrangements of PCBs equipped with NFC modules. 
     
    
    
     DETAILED DESCRIPTION 
     A description of example embodiments of the invention follows. 
       FIG. 1  is a diagram  100  illustrating an example embodiment of a headset computer  102  in headset form. The headset computer  102  includes a computer  118 , a power supply  116 , and a display boom  118 . The display boom further includes a display  110 , a display board  104 , and an antenna  106 . The headset computer  102  can include additional electronics or antennas. 
     The headset computer  102  further includes stabilizer mounts  114   a - b . The stabilizer mounts  114   a - b  are coupled to stabilizers  112   a - b . The stabilizers  112   a - b  and the stabilizer mounts  114   a - b  are removable from the headset computer  102 . The stabilizers  112   a - b  in  FIG. 1  wrap around the top of the user&#39;s head without connecting to each other. However, other variations of stabilizers  112   a - b  can be employed. Examples of other stabilizers  112   a - b  can be stabilizers which rest on the user&#39;s ear, stabilizers that connect at the top over the user&#39;s head (e.g., the stabilizer  112   a  connecting to the stabilizer  112   b ), stabilizers that connect to headwear, such as a hardhat, or stabilizers that clip to a user&#39;s hair or a baseball cap, etc. 
     The stabilizer mounts  114   a - b  can also slide along a head brace  120  to allow the user to adjust where the stabilizers  112   a - b  contact the user&#39;s head. Each user can have a different shaped head, so allowing adjustment of the location of the stabilizers  112   a - b  provides a comfortable fit for wearing of the headset computer. The stabilizers  112   a - b  can be configured to engage or disengage a locking mechanism  122   a - b  within the stabilizer mount  114   a - b . In this manner, the user can wear the headset computer  102  with the stabilizers  112   a - b  in a comfortable, user selected position. 
     In one embodiment, the stabilizers  112   a - b  are made from plastic (e.g., polycarbonate). The plastic can be clear. The stabilizers can be 20 mm wide, 8 mm thick, and 75 mm long. However, the stabilizers can be of many other dimensions as well. The stabilizer mounts  114   a - b  can be made from plastic, and can also be clear. The stabilizer mounts  114   a - b  can be 30 mm by 28 mm by 7 mm. The head brace can be made of metal (e.g., magnesium). The head mounted computer overall can have dimensions of 200 mm wide, 240 mm front-to-back, and 50 mm tall. In a compact, storage mode, the head mounted computer can be 160 mm wide by 100 mm front-to-back and 50 mm tall. The head mounted computer can weigh 8 ounces. However, the stabilizers, stabilizer mounts, head mounted computer can be of many other dimensions and/or weights as well. 
       FIG. 2A  is a diagram  200  illustrating an example embodiment of the display boom and display from a top perspective. The display boom can include a combination of pivots and or joints to allow for adjustment of the location of the display. The display can have an open or closed position, as shown by  FIG. 2A . The display can also be positioned between the open and closed position. 
       FIG. 2B  is a diagram  210  illustrating an example embodiment of the display boom and display. The display boom can also slide inward and outward using a telescoping boom to adjust the distance between the user&#39;s eye and the display. Throughout this process, the display remains vertical. The display can flip 180° and allow the user to flip the entire headset computer. This allows the user to effectively shift the display from the left to right eye, or vice versa, without disconnecting the display and re-connecting it at the other side of the headset computer. The display can be flipped to 180°, and upon turning the headset computer upside down, the display is in position for the opposite eye. 
       FIG. 2C  is a diagram  220  illustrating an example embodiment of the sliding arm of the display. The sliding arm can move the display away from or closer to the user. 
       FIG. 2D  is a diagram  230  illustrating an example embodiment of a user wearing the headset computer. The user can slide the display away from or closer to his or her eye. In addition, the display rotates out and the sliding arm can slide back and forth. 
       FIG. 3A  is a diagram illustrating an example embodiment of a horizontal orientation of the display relative to a pivot. The horizontal orientation makes switching the display from left to right and vice versa simpler than a vertical orientation, also illustrated in  FIG. 3A . 
       FIG. 3B  is a diagram illustrating an example embodiment of the display boom. The display boom includes a telescoping arm that can slide out and retract to move the display closer to and away from the user&#39;s eye. The display can also swivel 180° to switch from the left to right eye. This display can also swing out to retract into a retractable position. 
       FIGS. 3C-G  are diagrams illustrating an example embodiments of the display boom including different configurations with multiple pivots that are configured to rotate the display or position the display in different locations. 
       FIG. 4A  is a diagram illustrating an example embodiment of the collapsible headset computer from a top perspective. The headset computer includes a plurality of joints  400   a - e  which allow the headset computer to fold into a storable configuration. 
       FIG. 4B  is a diagram illustrating an example embodiment of the headset computer in a partially folded configuration. By folding the joints  400   a - e , the headset computer becomes more compact. 
       FIG. 4C  is a diagram illustrating an example embodiment of the headset computer in a fully collapsed configuration. In this configuration, the headset computer is completely folded and occupies a smaller volume. This enables easier carrying by the user. 
       FIG. 4D  is a diagram illustrating an example embodiment of the headset computer in a partially folded state. The headset computer is configured to fold along its body. The headset computer includes an optionally removable head strap, mounts that can rotate up to 180°, and joints that can bend up to 180°. In addition, the display can bend and twist 180° for storage and to flip the display from the left to the right orientation. 
       FIG. 4E  is a diagram illustrating an example embodiment of the soft bend and twist mechanism that couples the display to the boom. The mechanism includes a left position and a right position, and additionally a spring that forces the display to be naturally deployed either in the left or right position, but not linger in between the two positions, barring other mechanical forces. 
       FIG. 5  is a diagram illustrating an example embodiment of the headset computer  501  with two joints  502   a - b  in a collapsed form from a top perspective. Head support beam  503  is configured to wrap around the user&#39;s head supported by stabilizers  504   a - b . Display beam  505  connects display  506  and to the head support beam  503 . In this embodiment, the headset computer  501  joints  502   a - b  bend in an axis orthogonal to a long axis of the head support beam  503 . The two ends  503   a - b  of head support beam  503  are positioned closer together in the depicted collapsed form than in the headset form shown in  FIG. 1 . 
       FIG. 6  is a diagram illustrating an example embodiment of the headset computer  501  with two joints  502   a - b  in a collapsed form from an angled perspective. Support beam  503  is configured to wrap around the users head supported by stabilizers  504   a - b . Display beam  505  connects display  506  to support beam  503 . Electronics module  607  and power supply  608  are integrated with support beam  503 . 
       FIG. 7  a diagram illustrating an example embodiment of the headset computer  501  with 3 head support beam  503  joints  702   a - c  in a headset form from an angled perspective. Instead of a display beam, display  506  is attached as an accessory to an end of the head support beam at joint  702   a . On the other end of the head support beam  503  is a camera  710  accessory mounted at joint  702   c . Both the camera and display accessories are mounted by multiple joints  709   a - h  on support beams  712  and  713  to enable a more compact collapsed form, as shown in  FIG. 8 . Also in this embodiment, head support beam  503  is secured to the user&#39;s head in headset mode using an attached support means, shown here as a flexible strap  711  configured to wrap around the top of the user&#39;s head and support the weight of the headset computer  501 . 
       FIG. 8  is a diagram illustrating an example embodiment of the headset computer  501  of  FIG. 7  in collapsed form. Joint  702   b  is bent on an axis orthogonal to the long axis of head support beam  503  to fold the head support beam  503 , while joints  702   a  and  702   c  are bent on axes orthogonal to the long axis of head support beam  503  to fold the camera support beam  712  and display support beam  713  between the head support beam  503 . In this collapsed configuration, display  506  faces outwardly from the headset computer  501 , enabling the user to view the display in collapsed form. 
       FIG. 9  is a diagram  900  illustrating an example embodiment of the headset computer in headset form, including a rotatable earpiece  902 . 
       FIG. 10  is diagram  1000  illustrating an example embodiment of the headset computer from a back position. The headset computer is shown in headset form to be operating and showing a picture of a vehicle on its display  100 . In addition, the wheel  1002  in the back can be used to expand or contract the housing/head brace of the headset computer to fit different sized heads. 
       FIG. 11  is a diagram  1100  of an embodiment of the headset computer in headset form. The wheel  1002 , as described in  FIG. 10 , can be seen at the back the headset computer from a different angle. In addition, the embodiment of  FIG. 11  employs a horizontal display  1100 . 
       FIG. 12  is diagram  1200  of an embodiment of the headset computer. In this embodiment, the display is a P 1 B optic display, as shown in  FIG. 14 . 
       FIG. 13  is a diagram  1300  illustrating an example embodiment of the headset computer. The earpiece  902  can be rotated to flip from a right to left side when the entire headset computer is flipped. This allows the user to clearly hear output of the headset computer. 
       FIGS. 14A-C  are diagrams illustrating example embodiments of the P 1 B optic employed by the headset computer. In addition,  FIGS. 14A-C  illustrate the mounts that the P 1 B optic can be housed in the headset computer. Other optics can be used other than the P 1 B optic. 
       FIG. 15  is a diagram illustrating an example embodiment of different modes of a collapsible headset  314 . The transforming headset  314  includes an electronic board and or folded electronics  302 , a power source  304 , and an optic/display  306 . The power source  304  can include a 400 milliamp hour battery although other types of batteries can be employed. 
     A first mode of the transforming headset  314  is a handheld mode  308 . A user can easily hold or stow away the transforming headset in the handheld mode  308  because it is rectangular. In one embodiment, the collapsible headset  314  in handheld mode  308  is the approximate size of a cellular phone or other handheld device. Further, the optic/display  306  can be viewable when the unit is in this mode. The collapsible headset  314  can operate in the handheld mode  308 , and the optic/display  306  is operational. 
     The transformation mode  310  converts the transforming headset  314  from the handheld mode  308  to a head mounted mode  312 . The transforming headset  314  is still operational in the head mounted mode  312 , and includes the parts as the handheld mode  308 . The user, however, can wear the transforming headset  314  in the head mounted mode  312  such that the transforming headset  314  wraps around the user&#39;s head and the display is in front of the user&#39;s eye, instead of being protected by the foldable casing of the collapsible headset  314 . The transformation mode  310  can convert the collapsible headset  314  from the collapsed handheld mode  308  to the headset mode  312 . 
       FIG. 16A  is a diagram  2700  illustrating an example embodiment of a headset computer with a head support beam configured to use inward tension to mount to the user&#39;s head. The headset computer includes friction hinges  2702 , and spring zones  2704  that push the headset inward. Further, the headset includes a rotatable speaker  2708  that allows for sound output to the user. Further, each of the front ends can be coupled to a digital camera or mount for other device, allowing for accessories to be mounted to the headset computer. Further, mounts on each of the front ends of the headset computer can also provide a setup for a strap mount, which holds the headset computer to the user&#39;s head in an even more effective manner. 
       FIG. 16B  is a diagram  2750  illustrating an example embodiment of the headset computer. The speaker  2708 , as mentioned above can rotate up to 220°. Further, multiple speakers  2708 ,  2754 , one on both sides to give the user stereo audio. In addition the boom mount  2762  can slide up to 1¼ inches. The boom angle  2760  can rotate 50°. The boom rotation  2758  can be 240°. The boom  2756  can be twisted 25°, and a knuckle  2754  connecting the display to the boom can rotate 45° fore and 20° aft. The optic pod  2752  itself can rotate 60° to 75°. 
       FIGS. 17A-17B  are high-level schematic diagrams of electrical circuits employing near field communications that can be used to transfer data between electronics modules of a collapsible headset computer. 
     Near field communications (NFC) is a set of standards for establishing radio communications between devices by touching the devices or bringing them into close proximity, usually no more than a few centimeters. Smartphones and similar devices currently employ NFC technology. Present applications include contactless transactions, data exchange, and simplified setup of more complex communications, such as Wi-Fi. Communication is also possible between an NFC device and an unpowered NFC chip, called a “tag”. 
     Recent developments in NFC technology have enabled near-field high speed data transfer, including, for example, a “near-field high speed data transfer technology” (e.g., 375 Mb/sec.). Such NFC technology can be used for convenience in mobile devices; consumers find such high speed downloads or data transfer rates useful for transferring files, particularly for large files, such as movies. The Toshiba Transfer Jet is a NFC technology that provides wireless near-field high speed data transfer, can operate up to a distance of 3.5 centimeters, and has a near-field radiated power dissipation level that is similar to very low power near-field Bluetooth power levels. The Transfer Jet is available from Toshiba America Electronic Components, Inc., 19900 MacArthur Boulevard, Suite 400, Irvine, Calif. 
     NFC modules can be used as a near-field high speed wireless data transfer to interface between electronics modules or printed circuit boards (PCBs) (also referred to herein as printed circuit board assemblies (PCBAs)). In general, PCBs are used to mechanically support and electrically connect electronic components using conductive pathways, tracks, or signal traces etched from copper sheets laminated onto a non-conductive substrate. Multiple PCBs are typically interconnected using large multi-wire busses or, sometimes, vias are used for “stacked” configurations or for multi-layer boards. 
     The PCBs of the collapsible headset computer can be equipped with NFC modules. The NFC modules can replace the large multi-wire busses and vias used to interface between multiple PCBs. The NFC module equipped PCBs can be arranged in a stacked configuration (e.g., the PCB are in a parallel configuration) or placed end-to-end (e.g., the PCBs are in a series configuration). NFC modules allow the PCBAs to be placed in a thinner or lower profile stack, because the volume needed for large multi-pin PCBA to PCBA connectors is no longer required. 
     In whichever arrangement of PCBs is used, a first NFC module is located within a NFC range of a second NFC module to enable an interfacing wireless communications link between the two NFC modules. An example NFC range, such as the Transfer Jet is up to 3.5 centimeters, although the data transmit and reception range can be controlled by system software. Control of operating NFC ranges may be based on particular use and application to optimize a feature of system performance, such as transfer rate or battery life. 
     For embodiments of a collapsible headset computer that uses two or more NFC interfaces, when the NFC module is used for high speed data transfer between the headset computer and another device, such as a Smartphone or another collapsible headset computer, application software (or operating system instructions) can select a single NFC module as the data transfer point to interface with the other device. 
     For practical purposes, PCBAs can be sealed to the outside having only a power and/or ground external connection. By equipping individual collapsible headset computer PCBAs with NFC modules, the PCBAs (including the NFC modules) can be more easily hermetically sealed, because there are large number of external connection points of the multi-wire busses and vias have been eliminated. Thus, higher levels of system reliability and system life-span are possible because exposure to dust and moisture are greatly reduced. 
     NFC modules allow the PCBAs to move or flex within the physical constraints of a system architecture or industrial design free from the possibility of physical damage associated with the multi-wire busses, flex circuit interfaces, or connectors becoming loose or making intermittent contact during vibration or other PCBA to PCBA movement. 
     Using near field wireless high speed data transfer technology can eliminate large multiple pin connectors on two or more adjoining PCBAs, as well as any high speed multiple wire data bus or flex circuit interfaces. Eliminating the sharp right angle connection of PCBAs to PCBAs and the speed multi-wire bus or cables from PCBA to PCBA can improve and lower high speed system EMI and regional RF emission certifications. 
     Thus, use of PCBs equipped with NFC modules may allow collapsible headset computers to employ hinges and system housing flex points in its industrial design and be freed from the problems of passing large multi-wire busses or flex circuits interfaces through or about the hinges or flex points. 
       FIG. 17A  is a high-level schematic diagram of circuit  1700 , an example embedment of PCBs equipped with NFC modules arranged to be within the near field range of each other and configured to establish a communications link. The circuit  1700  includes a central processing unit printed circuit board assembly  1701  (CPU PCB) and an auxiliary printed circuit board assembly  1711  (AUX PCB). CPU PCB  1701  includes a central processing unit  1703  (CPU) communicatively coupled  1715  to a NFC module  1705 . The CPU  1703  can be, for example, an OMAP4430 multimedia application processor available from Texas Instruments Inc., 12500 TI Boulevard Dallas, Tex. For reasons of simplicity, details of the CPU PCB  1703  have been omitted, including, but not limited to: a power companion chip, battery connector, camera connector, USB on-the-go micro-AB connector, PCB temperature sensor, display connector, debug connector, status LEDs, user switches, etc. and communications pathways, such as traces, wires, etc. As such, the CPU PCB  1703  can include any or more of these details. 
     The AUX PCB  1711  includes an auxiliary module  1703  (AUX) communicatively coupled  1715  to a NFC module  1705 . NFC modules  1705  are arranged in close proximity, that is, within an operable near field range of one another. Further, the NFC modules are configured to establish a bi-directional wireless communications link  1750 . Such a bi-directional wireless communications link  1750  can be established using any appropriate NFC protocol and/or data exchange format. Although not shown in  FIG. 17A  for reasons of simplicity, the AUX PCB  1711  can include multiple AUXs  1713 , such as an audio codec and mini-DSP module, head tracker module, micro-SD card, power regulators, GPS receivers, wireless communications modules employing protocols such as Wi-Fi, Bluetooth, etc., eMMC embedded storage. The AUX PCB  1711  can not only include additional AUXs  1713 , such as those listed above, but also include communications pathways, such as traces, wires, etc. that enable operable coupling. 
       FIG. 17B  is a schematic diagram of the AUX PCB  1711  showing more details of the NFC module  1705 . The AUX PCB  1711  includes the AUX module  1713 , operable coupling  1715 , and NFC module  1705 . The NFC module  1705  can include NFC integrated circuit (NFC IC)  1755  and radio frequency (RF) circuit  1760 . 
       FIGS. 18A-18C  are example arrangements of PCBs equipped with NFC modules. 
       FIG. 18A  illustrates a series arrangement  1800   a  (also referred to as end-to-end) of PCBs including CPU PCB  1801  and AUX PCB  1811 . The CPU PCB  1801  includes the CPU  1803  and NFC module  1805   a . The AUX PCB  1811  includes multiple AUXs  1813  and NFC module  1805   b . The NFC modules  1805   a,b  are arranged to be positioned at an end of their respective PCBs. In other words, a first NFC module  1805   a  is located at an end, near the edge of the CPU PCB  1801  and a second NFC module  1805   b  is located at an end, near an edge of the AUX PCB  1811 . The CPU PCB  1801  and AUX PCB  1811  are arranged such that the location of each respective NFC module  1805   a,b  is located within the near field range of its respective communications link partner to enable the wireless transfer of data through communications link  1850 . 
       FIG. 18B  illustrates a parallel arrangement  1800   b  (also referred to as stacked) of PCBs including CPU PCB  1801  and AUX PCB  1811 . Similar to  FIG. 18A , the CPU PCB  1801  includes the CPU  1803  and NFC module  1805   a , and the AUX PCB  1811  includes multiple AUXs  1813  and NFC module  1805   b . Unlike the series arrangement  1800   a , the in parallel arrangement  1800   b  the NFC  1805   b  of AUX PCB  1811  is mounted on the underside so as to enable the NFC modules  1805   a,b  to be located within the near field range of each other. 
       FIG. 18C  illustrates a series arrangement  1800   c  of PCBs, including CPU PCB  1801  and AUX PCB  1811 , that is similar to series arrangement  1800   a  but for the CPU PCB  1801  and AUX PCB  1811  each being encased in a housing  1860   a,b , respectively. The housings  1860   a,b  can each be coupled to a joint  1865 , enabling the housings  1860   a,b  and the PCBs respectively encased by each, to rotate about an axis of the joint  1865 . The housings  1860   a,b  and joint  1865   a  should be designed to enable the NFC modules  1805   a,b  to be located within the near field range of each other in at least one operational position. 
     For the sake of simplicity, the example embodiments presented have been limited to embodiments having two printed circuit board assemblies communicating using NFC. However, it should be understood by those of skill in the art that the inventive principle described herein can be applied to any other embodiment including those of any number of additional printed circuit board assemblies. 
     While this invention has been particularly shown and described with references to example embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention encompassed by the appended claims.