Abstract:
In one embodiment, a head worn computer comprising a housing, wherein the housing includes at least one spring applying inward force to a user&#39;s head, a plurality of regions, the regions being able to be flexible regions or stiff regions, and two end regions, configured to wrap around a portion of the user&#39;s head, such that the two end regions are located at the front of the user&#39;s head, and each of the two end regions are on opposite sides of the user&#39;s head. In another embodiment, a method of configuring a head worn computer to a user, using the above mentioned head worn computer.

Description:
RELATED APPLICATIONS 
       [0001]    This application claims the benefit of U.S. Provisional Application No. 61/733,391, filed Dec. 4, 2012, and U.S. Provisional Application No. 61/750,266, filed on Jan. 8, 2013. This application also claims priority to U.S. application Ser. No. 13/843,124, filed on Mar. 15, 2013, and International Application No. PCT/2013/036403, filed on Apr. 12, 2013, which both claim the benefit of U.S. Provisional Application No. 61/733,391. 
         [0002]    The entire teachings of the above applications are incorporated herein by reference. 
     
    
     BACKGROUND OF THE INVENTION 
       [0003]    A head mounted computer includes 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 which can be generated by, for example, the head mounted computer, anther 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 OF THE INVENTION 
       [0004]    Head worn computers can be bulky systems and typically require adjustment of a series of straps or stabilizers to mount the computer on a user&#39;s head. Therefore, an embodiment of the present invention is a head worn computer that may be rapidly mounted or dismounted. In one embodiment, the head worn computer provides a housing which includes at least one spring, the at least one spring applies an inward force which allows the head worn computer to clamp to the user&#39;s head. 
         [0005]    In an embodiment, the inward force applied can be adjusted by a designer selecting a spring with a different stiffness constant. The inward force of any particular spring with any particular stiffness constant can be determined by Hook&#39;s law, F=kx. In an embodiment, a user can open the head worn computer and replace the spring(s) with springs of a different stiffness constant, for instance, to adjust for a different sized head. 
         [0006]    In an example embodiment, the present head worn computer can include a housing. The housing can include at least one spring applying an inward force to a user&#39;s head. The housing also includes a plurality of regions, each of the regions can be flexible regions or stiff regions. The housing also includes two end regions. The head worn computer of the present invention is configured to wrap around a portion of the user&#39;s head, such that the two end regions are located at the front of the user&#39;s head and each of the two end regions are on opposite sides of the user&#39;s head. The housing of the head worn computer may be supported by the back of the user&#39;s head. 
         [0007]    In another embodiment, the housing may include a first flexible region and a second flexible region. The first flexible region may be located between a center of the housing and a first stiff region. The second flexible region may be located between the first stiff region and a second stiff region. 
         [0008]    In another embodiment, the first flexible region may provide greater inward force than the second flexible region. 
         [0009]    In another embodiment, the housing can also include a central processing printed circuit board (CPUPCB), which includes a central processing unit (CPU) that is operatively coupled to a first near field communications (NFC) module. The NFC module is located in a first of the plurality of regions. An auxiliary printed circuit board (AUXPCB) can include one or more auxiliary modules operatively coupled to a second NFC module. The second NFC module can be located in a second of the plurality of regions. The first and second NFC modules may be configured to establish an NFC link. 
         [0010]    In another embodiment, the head worn computer of the present invention may further comprise at least one mount attached to the end regions of the housing. 
         [0011]    In another embodiment, the mount may be configured to mount an accessory. The accessory may include at least one of a camera, sensor, microphone, display, and illumination device. 
         [0012]    In another embodiment, the mount may include at least one joint. 
         [0013]    In another embodiment, the first plurality of regions may be adjacent to the second plurality of regions. 
         [0014]    In another embodiment, a method of configuring a head worn computer to a user can include providing a housing. The housing can include at least one spring applying an inward force to the user&#39;s head. The housing also includes a plurality of regions. Each of the regions can be flexible regions or stiff regions. The housing can also include two end regions. The head worn computer of the present method may be configured to wrap around a portion of the user&#39;s head such that the two end regions located at the front of the user&#39;s head and each of the two end regions are on opposite sides of the user&#39;s head. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0015]    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. 
           [0016]      FIG. 1  is a diagram illustrating a top-down view of an example head worn computer in a partially folded state. 
           [0017]      FIG. 2  is a diagram illustrating an example embodiment of a head worn computer configured to the head of a user. 
           [0018]      FIG. 3  is a diagram illustrating a cross-section of an example embodiment of a head worn computer. 
           [0019]      FIG. 4A  is a diagram illustrating an example embodiment of springs that may be located within the housing of the head worn computer. 
           [0020]      FIG. 4B  is a diagram illustrating an example embodiment of springs in isolation. 
           [0021]      FIG. 5  is an illustration of an example embodiment of the head worn computer worn on the head of a user. 
           [0022]      FIGS. 6A-6B  are block diagrams illustrating electrical circuits employing near field communication to transfer data between electronics modules of a head worn computer. 
           [0023]      FIGS. 7A-7C  are block diagrams illustrating example arrangements of PCBs equipped with NFC modules. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0024]    A description of example embodiments of the invention follows. 
         [0025]      FIG. 1  is a diagram illustrating a top-down view of an example head worn computer in a partially folded state. The head worn computer is comprised of a housing  101 , which terminates in two end regions  100 . The housing may be constructed of a plastic or metal material which encloses all or part of a spring. The spring provides an inward force directed towards a user&#39;s head. To open the head worn computer from its partially folded state, the user can apply a force in the direction of arrows  102   a - b . In the present example embodiment, a first end  100  rests on top of a second end  100  when in a partially folded state. In another embodiment, the second end  100  may rest on top of the first end  100 . 
         [0026]      FIG. 2  is a diagram illustrating an example embodiment of a head worn computer configured to the head of a user. The housing  202  rests and remains stationary against the back of the user&#39;s head. When worn on a user&#39;s head, the springs exert an inward force in a direction indicated by arrows  210   a - d . The inward force secures the computer to the user&#39;s head. Along the inside surface of the housing adjacent to the user&#39;s head while the user is wearing the head worn computer, padding may be attached to provide comfort to the user. One or more speakers may be attached to the housing, for example, along the outside surface of the housing. The speakers may rotate up to 220°. Providing and enabling more than one speaker may provide the user with stereo audio. 
         [0027]    Further, one or both end regions  200  may include a mount  201 . The mount  201  may be used to attach accessories, such as a camera, a microphone, a sensor, an illumination device, or a display. Further, the mounts on each of the end regions can also provide a setup for a strap mount, which can secure the headset computer to the user&#39;s head in a more effective manner. 
         [0028]    The mount  201  may also include at least one pivot and/or joint to allow the user to adjust the angle or location of the accessory attached to the mount. The head worn computer is mounted with a display  203  attached to an arm  204 . The display, as well as other accessories, can flip 180°. Flipping the display or accessory allows the user to flip the entire head worn computer and position an accessory on the opposite side of the user&#39;s head. This, for example, provides the user with the freedom to shift the display from left eye to right eye, or vice versa, without the need to disconnect and reconnect the display to the opposite mount. 
         [0029]      FIG. 3  is a diagram illustrating a cross-section of an example embodiment of a head worn computer. The head worn computer in  FIG. 3  includes flexible regions  303 - 305 , stiff regions  307 - 312 , and two end regions  301 - 302 . Each flexible region  303 - 305  includes a spring. The springs of each flexible region  303 - 305  produce an inward force directed towards a user&#39;s head. The head worn computer may employ multiple springs or it may use one spring to provide a desired amount of inward tension/force. 
         [0030]    A plurality of regions may include at least one flexible region and/or at least one stiff region, or, a plurality of regions may include multiple flexible regions and/or multiple stiff regions. A first of the plurality of regions  314  and a second of the plurality of regions  315  can each include at least one flexible region and at least one stiff region. 
         [0031]    Further, the head worn computer includes two sets of flexible regions. A first set of flexible regions  305  and  306  are one spring length away from the center of the housing  313 . As a result, the first set of flexible regions  305  and  306  apply a large force to the head. This force allows the head worn computer to be secured to the user&#39;s head. The second set of flexible regions  303  and  304 , however, are one spring length away from the first set of flexible regions  305  and  306 , and two spring lengths away from center of the housing  313 . The second set of flexible regions  303  and  304  exerts less force than a single spring in isolation because the second set is two spring lengths from the center of the housing  313 . The second set of flexible regions  303  and  304 , therefore, apply less force than the first set of flexible regions  305  and  306 . In this example embodiment, when worn by the user, the end regions  301  and  302  rest near the front of the user&#39;s head, above the ear. The second set of flexible regions  303  and  304  apply less force than the first flexible regions  305  and  306  to prevent discomfort to the user. 
         [0032]    Further, in an example embodiment, a near field communication (NFC) link may be installed in one of the plurality of regions. For example, within the first of the regions  314 , a central processing printed circuit board (CPUPCB) including a central processing unit (CPU) coupled to a first near field communications (NFC) module may be installed. Adjacent to, or otherwise within range of, the first of the regions  314 , a second of the regions  315  may have an auxiliary printed circuit board (AUXPCB) including one or more auxiliary modules operatively coupled to a second NFC module. The first NFC module and the second NFC module may be configured to establish an NFC link. Within each of the remaining pluralities of regions, a NFC module and corresponding electronics modules (e.g. CPUPCB, CPU, or AUXPCB) may be installed. Each NFC module in each region may be configured to establish an NFC link. 
         [0033]      FIG. 4A  is a diagram illustrating an example embodiment of springs  401  that may be located within the housing  400  of the head worn computer. In  FIG. 4A , the springs  401  are shown removed from the regions of the housing that contain the springs  401 . 
         [0034]      FIG. 4B  is a diagram illustrating an example embodiment of springs  401  in isolation. In  FIG. 4B , the springs  401  are shown removed from the housing entirely. 
         [0035]      FIG. 5  is an illustration of an example embodiment of the head worn computer worn on the head of a user. The housing  500  rests on the back of the user&#39;s head and remains stationary. End region  503  rests above the user&#39;s ear, close to the temple at the front of the user&#39;s head. In an example embodiment, the end region includes a mount  504 . A display  501  may be attached to the mount  504 . The display  501  can be positioned directly in front of the user&#39;s eye  502 . 
         [0036]      FIGS. 6A and 6B  are block diagrams  600  and  611  of electrical circuits employing near field communication to transfer data between electronics modules of a head worn computer. 
         [0037]    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”. 
         [0038]    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. 
         [0039]    NFC modules can be employed as an interface to provide 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. 
         [0040]    The PCBs of the head worn computers 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 connected in a parallel configuration) or placed end-to-end (e.g., the PCBs connected in a series configuration). NFC modules allow the PCBAs to be placed in a thinner or lower profile stack because the volume needed to fit large multi-pin PCBA to PCBA connectors is no longer required. 
         [0041]    In either 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. 
         [0042]    For embodiments of a head worn computer that use two or more NFC interfaces, when the NFC module is used for high speed data transfer between the head worn computer and another device, such as a Smartphone or another head worn computer, application software (or operating system instructions) can select a single or multiple NFC modules as the data transfer point to interface with the other device. 
         [0043]    For practical purposes, PCBAs can be sealed to the outside having only a power and/or ground external connection. By equipping individual head down 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. 
         [0044]    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. 
         [0045]    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. 
         [0046]    Thus, use of PCBs equipped with NFC modules may allow head worn computers to employ hinges, system housing flex points, and flexible or stiff regions 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. 
         [0047]      FIG. 6A  is block diagram of circuit  600 , 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  600  includes a central processing unit printed circuit board assembly  601  (CPU PCB) and an auxiliary printed circuit board assembly  611  (AUX PCB). CPU PCB  601  includes a central processing unit  603  (CPU) communicatively coupled  615  to an NFC module  605 . The CPU  603  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  603  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  603  can include any or more of these details. 
         [0048]    The AUX PCB  611  includes an auxiliary module  603  (AUX) communicatively coupled  615  to an NFC module  605 . NFC modules  605  are arranged in close proximity, that is, within an operable near field range of one another. 
         [0049]    Further, the NFC modules are configured to establish a bi-directional wireless communications link  650 . Such a bi-directional wireless communications link  650  can be established using any appropriate NFC protocol and/or data exchange format. Although not shown in  FIG. 6A  for reasons of simplicity, the AUX PCB  611  can include multiple AUXs  613 , 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  611  can not only include additional AUXs  613 , such as those listed above, but also include communications pathways, such as traces, wires, etc. that enable operable coupling. 
         [0050]      FIG. 6B  is a schematic diagram of the AUX PCB  611  showing more details of the NFC module  605 . The AUX PCB  611  includes the AUX module  613 , operable coupling  615 , and NFC module  605 . The NFC module  605  can include NFC integrated circuit (NFC IC)  655  and radio frequency (RF) circuit  660 . 
         [0051]      FIGS. 7A-7C  are block diagrams illustrating example arrangements of PCBs equipped with NFC modules. 
         [0052]      FIG. 7A  is a block diagram illustrating an example embodiment of a series arrangement  700   a  (also referred to as end-to-end) of PCBs including CPU PCB  701  and AUX PCB  711 . The CPU PCB  701  includes the CPU  703  and NFC module  705   a . The AUX PCB  711  includes multiple AUXs  713  and NFC module  705   b . The NFC modules  705   a - b  are arranged to be positioned at an end of their respective PCBs. In other words, a first NFC module  705   a  is located at an end, near the edge of the CPU PCB  701  and a second NFC module  705   b  is located at an end, near an edge of the AUX PCB  711 . The CPU PCB  701  and AUX PCB  711  are arranged such that the location of each respective NFC module  705   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  750 . 
         [0053]      FIG. 7B  is a block diagram illustrating an example embodiment of a parallel arrangement  700   b  (also referred to as stacked) of PCBs including CPU PCB  701  and AUX PCB  711 . Similar to  FIG. 7A , the CPU PCB  701  includes the CPU  703  and NFC module  705   a , and the AUX PCB  711  includes multiple AUXs  713  and NFC module  705   b . Unlike the series arrangement  700   a , the in parallel arrangement  700   b  the NFC  705   b  of AUX PCB  711  is mounted on the underside so as to enable the NFC modules  705   a - b  to be located within the near field range of each other. 
         [0054]      FIG. 7C  is a block diagram illustrating an example embodiment of a series arrangement  700   c  of PCBs, including CPU PCB  701  and AUX PCB  711 , that is similar to series arrangement  700   a  but for the CPU PCB  701  and AUX PCB  711  each being encased in a housing  760   a - b , respectively. The housings  760   a - b  should be designed to enable the NFC modules  705   a - b  to be located within the near field range of each other in at least one operational position. 
         [0055]    The teachings of all patents, published applications and references cited herein are incorporated by reference in their entirety. 
         [0056]    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.