Patent Publication Number: US-2006012566-A1

Title: Wearable computing, input, and display device

Description:
RELATED APPLICATIONS  
      This patent application is a divisional patent application of the patent application filed on Apr. 19, 2003, and assigned Ser. No. 10/419,542 (confirmation number 1527), which itself claims priority to the provisional patent application filed on Apr. 23, 2002, having the inventor Shakoor Nelson Siddeeq, and assigned Ser. No. 60/374,589 (confirmation number 5635). 
    
    
     FIELD OF THE INVENTION  
      This invention relates generally to computing, input, and/or display devices, and more particularly to such devices that are wearable by the user.  
     BACKGROUND OF THE INVENTION  
      Using computers has become a ubiquitous activity in today&#39;s society. Many users require constant access to their computing devices to maintain their professional or personal lives. For some users, this means that they are tethered to their desktop computers all day long. For other users, this means that they constantly carry laptop or notebook computers that they can access. Still other users carry personal-digital assistant (PDA) devices or cellular phones all day long.  
      All of these solutions, however, present disadvantages to users to some degree. Users who rely solely upon desktop computers cannot access them when they are away from the places in which the desktop computers are located. Users who rely upon laptop or notebook computers have to lug them around everywhere they go. Even the latest generation of such portable computers are still somewhat unwieldy and heavy to be constantly carried. PDA devices and cellular phones are easily misplaced and lost, and some of these devices are overly large and difficult to store.  
      A new field of computers that attempts to overcome these difficulties is the wearable computer. A wearable computer is a computing device that a user literally wears on his or her body, as if it were, for example, a piece of clothing, a piece of jewelry, or a wristwatch. Current wearable computer designs, however, are less than ideal. For a wearable computer to be truly useful, the user should be able to easily view and input data when desired, but the wearable computer should otherwise not get in the way of day-to-day activities. However, current wearable computer designs are often unwieldy, and fail these design objectives, either not allowing the user to both easily view and input data, and/or not being readily put out of the way when not needed.  
      For these and other reasons, therefore, there is a need for the present invention.  
     SUMMARY OF THE INVENTION  
      The invention relates to a wearable computing, input, and display device. One embodiment of the invention includes a band wrappable around a wrist of a user, one or more input mechanisms, a display mechanism, and a computing mechanism. The input mechanisms are attached to the band and have a recessed position and an extended position. In the recessed position, the input mechanisms are positioned under the wrist of the user. In the extended position, the input mechanisms are substantially positioned at the user&#39;s fingertips. The display mechanism is attached to the band such that it is over the wrist of the user, whereas the computing mechanism is attached to the band and operably coupled to the input and display mechanisms. In an alternate embodiment, the display mechanism is additionally rotatable from a flat position to a raised position, and vice-versa, where the raised position is user controlled for optimal viewing by the user.  
      Embodiments of the invention provide for advantages over the prior art. The wearable computer of at least some embodiments of the invention is a complete computing solution, providing, computing, input, and display capabilities via a device that has a band to wrap around the wrist of the user to wear like a wristwatch. When the user does not wish to use the computer, its display and input mechanisms are out of the way and do not interfere with the user. This is because the input mechanisms can be put in a recessed position under the band, whereas the display mechanism can be rotated flat against the band. When the user wishes to input data, he or she merely has to extend the input mechanisms to their extended position, whereas when the user wishes to view the display mechanism, he or she can rotate the mechanism in one embodiment so that it is optimally viewable.  
      Still other aspects, embodiments, and advantages of the invention will become apparent by reading the detailed description that follows, and by referring to the accompanying drawings. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
      The drawings referenced herein form a part of the specification. Features shown in the drawing are meant as illustrative of only some embodiments of the invention, and not of all embodiments of the invention, unless otherwise explicitly indicated, and implications to the contrary are otherwise not to be made.  
       FIGS. 1, 2 , and  3  show a front view, a side view, and a perspective view, respectively, of a computing device, according to an embodiment of the invention, in which the input mechanisms are in a recessed position.  
       FIG. 4  shows a perspective view of a computing device in which the input mechanisms are between a recessed position and an extended position, according to an embodiment of the invention.  
       FIGS. 5, 6 ,  7 ,  8 , and  9  show a perspective view, a side view, a top view, a bottom view, and a front view, respectively, of a computing device, according to an embodiment of the invention, in which the input mechanisms are in an extended position.  
       FIGS. 10 and 11  show side views of a computing device being used by a user, according to an embodiment of the invention, in which the input mechanisms are in a recessed position and in an extended position, respectively.  
       FIG. 12  shows a top view of a computing device, according to an alternative embodiment of the invention, in which the device is in a rotated, two-handed state.  
       FIG. 13  shows a front view of a computing device, according to an alternative embodiment of the invention, in which the display mechanism is rotatable from a flat position to a raised position.  
       FIGS. 14, 15 ,  16 ,  17 ,  18 ,  19 , and  20  are diagrams of varying views showing the keys of a computing device can be implemented, according to an embodiment of the invention.  
       FIGS. 21, 22 , and  23  show a top view, a side view, and a front view, respectively, of a thumb-held computing and/or input device, according to an embodiment of the invention.  
       FIGS. 24 and 25  show a side-view cross section and a top view, respectively, of how keys of a device can be implemented, according to another embodiment of the invention.  
       FIGS. 26 and 27  show a front-view cross-section and a side-view cross section, respectively, of a wrist-worn computing device, according to an embodiment of the invention, in a recessed position.  
       FIGS. 28 and 29  show a front-view cross-section and a top-view cross section, respectively, of the mechanical gears and components used to adjust wristbands of a wrist-worn computing device, according to an embodiment of the invention.  
       FIGS. 30, 31 , and  32  show a front view, a side-view cross section, and a side view of a wrist-worn computing device that employs a slide-out mechanism to switch between a recessed position and an extended position, according to an embodiment of the invention. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
      In the following detailed description of exemplary embodiments of the invention, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration specific exemplary embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments may be utilized, and logical, mechanical, and other changes may be made without departing from the spirit or scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims.  
      It is noted that like reference numbers among the figures identify identical components of the computing device depicted in the figures. As a result, in any given figure more reference numbers may be indicated than are described in the detailed description for that figure. However, the components identified by these reference numbers are described in relation to other figures, and such description may be referenced to determine the functionality and identification of the components in figures in which the reference numbers for these components are not particularly described.  
       FIGS. 1, 2 , and  3  show a front view, a side view, and a perspective view, respectively, of a computing device, according to an embodiment of the invention. The computing device depicted in  FIGS. 1, 2 , and  3  as having its input mechanisms  10  in a recessed position. While reference is made to a plurality of input mechanisms  10 , the input mechanisms  10  may also be considered as a single input mechanism having multiple sections, as can be appreciated by those of ordinary skill within the art, such that the terminology of having a single input mechanism  10  with multiple sections is encompassed by the description of embodiments of the invention herein. The computing device preferably includes a computing mechanism  1  that contains all the electronic components necessary to achieve computing functionality. The outer case may be composed of a rigid polymer, or any other firm material. The shape, length, width, size, or other parameters of the computing device, including the display mechanism  15 , may vary from those shown in the figures.  
      In embodiments of the invention not including the computing mechanism  1  and the display mechanism  15 , the device depicted in  FIGS. 1, 2 , and  3  is alternatively an input device having the input mechanisms  10 . Likewise, in embodiments not including the computing mechanism  1  and the input mechanisms  10 , the device depicted in  FIGS. 1, 2 , and  3  is alternatively a display device having the display mechanism  15 . Further, the input mechanisms  10  may include one or more of a pointing device, such as a touch pad device, a keyboard having a number of keys, and/or another type of input device. Additionally, the display mechanism  15  and the computing mechanism  1  may be encased within a common housing, such that the housing is detachable from the wristband for use of the computing and the display mechanisms  1  and  15  independent of the input mechanisms  10  and apart from the band. Thus, the computing device in one embodiment is modular.  
      The display mechanism  15  is optional, and may be a liquid-crystal display (LCD) in one embodiment. In alternative embodiments, the computing device may include wireless communication circuitry that could communicate, for instance, with a heads-up display, a remote personal-digital assistant (PDA) device, or another display mechanism. The wireless communication circuitry may also be used in addition to the display mechanism  15 . The computing device may include various buttons, electrical card slots, and other features not depicted in the figures.  
      The adjustable wristband  2  is wrappable around a wrist of a user, and allows for the computing device to fit on differently sized user wrists. The adjustable wristband  2  may be made from any flexible material that allows it to wrap around a user&#39;s wrist. The top outer layer is preferably firmer than the bottom layer that rests against the user&#39;s skin. The bottom layer may be fabricated from a soft cushion-like material. The shape, length, width, thickness, size, and other parameters of the adjustable wristband  2  may vary from that depicted in the figures. The wristband  2  may also be made of a number of band sections hingeably linked or otherwise attached to one another.  
      The wristband  2  includes a non-adjustable wristband component  3  that serves as an electrical conduit. It contains the electrical wiring and insulation that connects the computing mechanism  1  to the input mechanisms  10 . The non-adjustable wristband component  3  may be made of any flexible material that allows it to wrap around the user&#39;s wrist. The top outer layer is firmer than the bottom layer. The internal layer contains electrical wiring and insulation, which may be fabricated from any type of flexible printed circuit board material. The bottom layer may be made from a soft cushion-like material. The shape, length, width, thickness, size, and other parameters of the non-adjustable wristband component  3  may vary from that depicted in the figures.  
       FIG. 4  shows a perspective view of the computing device in which the input mechanisms  10  is between its recessed and extended positions, according to an embodiment of the invention. By comparison,  FIGS. 5, 6 ,  7 ,  8  and  9  show a perspective view, a side view, a top view, a bottom view, and a front view, respectively, of the computing device in which the input mechanisms  10  are in the extended position, according to an embodiment of the invention. Furthermore,  FIGS. 10 and 111  show a side view of the computing device as being used by a user in which the inputs mechanisms  10  are in the recessed position and in the extended position, respectively, according to an embodiment of the invention. The recessed position is for storage of the input mechanisms  10 , whereas the extended position is for use by the user of the input mechanisms  10 .  
      The primary support hinge  4  allows the input mechanisms  10  to be rotated out into its extended position, as specifically depicted in  FIG. 5 . The primary support hinge  4  also acts in conjunction with the device support base  8  to support the weight of the input mechanisms  10  and its attached extenders  12 ,  14 A, and  14 B, and the forces resulting from the user using the input mechanisms  10 . The primary support hinge  4  is attached to either side by the device support base  8  and the lower extender  14 A. The primary support hinge  4  may be a spring-loaded torque hinge. As such, the primary support hinge  4  may spring out from the recessed position to the extended position once the release button  9  is pressed. In the extended position, it may further be adjusted manually by using the lower extender  14 A and the upper extender  14 B as a torque lever. Electrical wiring may run through and/or around the primary support hinge  4 . The shape, length, width, thickness, compartments, type, material, and other parameters of the primary support hinge  4  may vary from that depicted in the figures.  
      A flexible connector  5  attaches the upper input mechanism part  10 A to the lower input mechanism part  10 B. The flexible connector may be made from any flexible and stretchable material. When the upper input mechanism part  10 A and the lower input mechanism part  10 B are collapsed and folded over, as specifically depicted in  FIG. 4 , the flexible connector  5  is stretched to accommodate the change in position. The flexible connector  5  is depicted in its most stretched state in  FIG. 1 , whereas it is depicted in its most relaxed state in  FIG. 7 . The shape, length, width, thickness, size, type, material, and other parameters of the flexible connector  5  may vary from that depicted in the figures.  
      The support base  6  connects the lower input mechanism part  10 B to the hinge  11 , and supports the overall structure of the input mechanisms  10 . The support base  6  may be made from a polymer-like material. The support base  6  contains the electrical wiring and connectors that electrically connect the input mechanisms  10  to the computing mechanism  1 . The shape, length, width, thickness, size, type, material, and other parameters of the support base  6  may vary.  
      The wristband lock  7  acts to lock in place or unlock the adjustable wristband  2  by engaging or releasing a locking mechanism that mates with the wristband holes  21 . The type of locking mechanism may be a rocker switch or another type of engaging and releasing locking mechanism. The shape, length, width, thickness, size, type, material, method, and other parameters of the wristband lock  7  and its mechanism may vary.  
      The support base  8  serves as an anchor for the computing mechanism  1  and as a support for weight of the input mechanisms  10  and their extenders. The structure of the support base  8  may be composed of a rigid polymer-based material. The top outer layer that lies flush against the user&#39;s wrist may have a soft cushion-like material. The internal structure contains electrical wiring and connectors that connect it to the non-adjustable wristband component  3  and the primary support hinge  4 . The support base  8  has a hollow slot for the adjustable wristband  2  to pass through and also contains the components for the locking mechanism used in conjunction with the wristband lock  7 . The shape, length, width, thickness, size, type, material, arrangement, compartments, and other parameters of the support base  8  may vary.  
      The release button  9 , when depressed, causes the input mechanisms  10  to be released from the slot  18  while the input mechanisms  10  are in their recessed position. Once the release button  9  is depressed the input mechanisms  10  spring out into the partially extended position depicted in  FIG. 4  and possibly further into the extended position depicted in  FIG. 5 , depending on the properties of the primary support hinge  4 , the type of secondary support hinge, and the type of hinge  11  incorporated in the construction of a particular embodiment of the invention.  
      The input mechanisms  10  serve as a very thin and flexible data input interface that wraps about the user&#39;s wrist when in the recessed position, as depicted in  FIG. 3 , and lies substantially at and beneath the user&#39;s fingers in the extended position, as depicted in  FIG. 11 . The input mechanisms  10  include a lower input mechanism part  10 B and an upper input mechanism part  10 A connected by the flexible connector  5 . Each of the parts  10 A and  10 B may be made from a very thin flexible polymer or dielectric-based or any other suitable material. The materials chosen are thin and flexible enough to wrap around a user&#39;s wrist, and preferably have a default horizontal state and requires an external force to be put in the recessed position. In an alternative embodiment, such as in  FIG. 30 , the material of the input mechanism parts  10 A and  10 B may have a default curved state in the recessed folded position. The materials chosen also are preferably sufficiently strong to withstand continual flexing between the recessed and extended positions with minimal hysteresis or distortion. The shape, length, width, thickness, size, type, material, arrangement, compartments and other parameters of the parts  10 A and  10 B may vary.  
      Each of the parts  10 A and  10 B have two slightly thicker endpoints, an upper endpoint  16 A and a lower endpoint  16 B, on either side. The shape, length, width, thickness, size, type, material, arrangement, and other parameters of these endpoints may vary. The endpoint  16 A has a male connector  17 A that snaps and locks into the female slot  17 B on the lower endpoint  16 B. The male-female connectors act to stabilize the endpoints  16 A and  16 B when the input mechanisms  10  are in the extended position and being used by the user. The locations of the connector  17 A and the slot  17 B may be interchanged during construction of a particular embodiment of the invention. The connector  17 A and the slot  17 B also contain electrical connectors that make contact and complete an electrical circuit when the two connectors are mated and the input mechanisms  10  are in the extended position, as depicted in  FIG. 5 . The shape, length, width, thickness, size, type, material, arrangement, compartments, and other parameters of the connector  17 A and the slot  17 B may vary.  
      Running along the bottom, top, internal, or any partial combination thereof of input mechanism sections  10 A and  10 B is electrical wiring on a flexible printed circuit board that may or may not contain via holes. The electrical wiring transmits key presses and input device movement signals to the computing mechanism  1 . The input mechanisms  10  preferably contain both keyboard keys  20  and an input device touch pad  19 . The keys  20  may be partially raised or totally flat. In the case of the keys  20  being raised, the top part may be made of a very thin polymer or silicone rubber-based material with a very thin electrode attached on its bottom side to close the switch, as is described later in the detailed description. The sidewalls or support structure for the top part of the keys  20  may be made of a very thin silicone rubber-based material, or any material that easily compressed under the application of an external force, as is also described later in the detailed description.  
      Alternatively, the keys  20  may be flat and require only visible ink or print to show the corresponding layout. The key press for such a flat layout may be determined by using the conductivity of the user&#39;s fingers in completing a circuit and determining the position. The touch pad  19  is a flat area and may use the conductivity or pressure of the user&#39;s finger to determine its position and movement. The shape, length, width, thickness, height, size, type, material, arrangement, compartments, electrical characteristics, layout, configuration, structure, key press detection mechanism, addition or omission of keys or input device buttons, and other parameters of the keys  20  and the touch pad  19  may vary.  
      The hinge  11  allows the rotation of the input mechanisms  10  to accommodate various user preferences as well as to support and connect both structurally and electrically to the support base  6  and the extender  12 . The hinge  11  may be a spring-loaded torque hinge and mimic the basic internal and external structure and function of the primary support hinge  4  already described. The shape, length, width, thickness, size, compartments, type, material, and other parameters of the hinge  11  may vary.  
      The extender  12  acts as a lever and allows the user to adjust the height and angle of the input mechanisms  10  and also supports the weight of the input mechanisms  10 . The extender  12  may be made from a lightweight polymer material with a hollow interior to allow flexing and movement of the electrical wiring during positional state changes. Internally it may contain loose-fitting flexible electrical wiring and connectors that connect it to the hinge  11  and the secondary support hinge  13 . The shape, length, width, thickness, size, compartments, type, material, and other parameters of the extender  12  may vary.  
      The secondary support hinge  13  allows the rotation of the upper extender  14 B and the extender  12  to accommodate various use preferences as well as to support and connect both structurally and electrically to the upper extender  14 B and the extender  12 . The secondary support hinge  13  may be a spring-loaded torque hinge and mimic the basic internal and external structure and function of the primary support  4  that has been described. The shape, length, width, thickness, size, compartments, type, material, and other parameters of the secondary support hinge  13  may vary.  
      The lower extender  14 A acts in conjunction with the upper extender  14 B as a lever that allows the user to adjust the angle and height of the input mechanisms  10  and also supports the weight of the input mechanisms  10 . The upper extender  14 B also has the ability to slide forward and extend or length the resultant distance of the input mechanisms  10 . This allows users with different sized or length hands or fingers to adjust a particular embodiment of the invention to accommodate their preferences.  
      The lower extender  14 A and the upper extender  14 B may be made from a thin rigid lightweight polymer material with a hollow interior to allow flexing and movement of the electrical wiring during positional state changes. The upper extender  14 B is attached to the lower extender  14 A by a grooved sliding connector or connectors. The lower extender  14 A internally may contain loose-fitting flexible electrical wiring and connectors that connect it to the primary support hinge  4  and to the groove sliding connector(s). The upper extender  14 B internally may contain loose-fitting flexible electrical wiring and connectors that connect it to the secondary support hinge  13  and to the grooved sliding connector(s). The shape, length, width, thickness, size, compartments, type, material, and other parameters of the lower and upper extenders  14 A and  14 B may vary, although such variations are not depicted in the figures.  
       FIG. 12  shows the top view of the computing device, according to an alternative embodiment of the invention. The computing device is depicted in  FIG. 12  in the extended positioned, and in which it is in a rotated, two-handed state. The touch pad pivot  23  allows the input mechanisms  10  to slightly rotate. The touch pad hinge  11  is attached to a pivot extender  22 . The pivot extender  22  acts as a rotating brace in conjunction with the extender  12  that has a female slot to allow for the pivot extender  22  to rotate in and out. A similar arrangement is also used for the primary support hinge  4  and the lower extender  14 A. The shape, length, width, thickness, size, compartments, type, mechanisms, material, and other parameters may vary from that depicted in  FIG. 12 .  
       FIG. 13  shows the front view of the computing device, according to another alternative embodiment of the invention. The computing device is depicted in  FIG. 13  in the recessed position with the display mechanism  15  at an angle. The display mechanism  15  may be rotated about an axial hinge  24 . The axial hinge  24  also has electrical wire running through or around it that connects the display mechanism  15  to the rotational connector  27 . The display mechanism  27  is also attached to the rotational connector  27  by a connector hinge  25  that is connected to an adjustable support rod  26 , which is connected to torqued notched grooves or tracks on either edge and side of the rotation connector  27 . The display mechanism  27  is thus rotatable from a flat position to a raised position, and vice-versa, such that the raised position is user controlled for optimal viewing of the display mechanism  27 .  
      The adjustable support rod  26  moves up and down the torqued notched grooves or tracks on the rotational connector  27  when the user applies an external force to move the adjustable support rod  26  forward or back a notch by lifting or pushing down the display mechanism  15 . The rotational connector  27  allows the display mechanism  15  to be rotated about a hollow cylindrical axis in the center of the rotational connector  27 . The hollow cylindrical axis allows the rotational connector  27  rotate about the computing mechanism  27  and also allows loosely connected and flexible wiring to electrically connect the connector  27  to the computing mechanism  27  through the hollow cylindrical axis connector. The shape, length, width, thickness, size, compartments, type, mechanisms, material, and other parameters of these components may vary from that depicted in  FIG. 13 .  
       FIGS. 14, 15 ,  16 ,  17 ,  18 ,  19 , and  20  show how the keys  20  of the computing device can be implemented, according to some embodiments of the invention.  FIG. 14  is a side-view cross section of the keyboard sections  100  with the electrical wiring being routed via the male connector  104  and the female receptor  105  upon contact. There is a flexible connector  101  connecting the keyboard sections  100  with one another. The keyboard sections  100  include electrical circuitry  102 , and a bottom keyboard section  103 .  FIG. 15  shows a side-view cross section of an alternative embodiment in which the electrical wiring is routed through the flexible connector  101 .  
       FIG. 16  is a front-view cross section of the keyboard sections  100 . The bottom keyboard section  103  contains a thicker midsection to house the electrical circuitry  102  and the electrical connectors, both to the keyboard section  100  and the keyboard extender support  125 , the latter which is not shown in  FIG. 16 . The keypad endpoints are slightly thinner.  FIG. 17  is a side-view cross section of collapsed or folded keyboard sections.  FIG. 18  shows a top view of a dual-section key having a left section  107 B that is smaller than the right section  107 A. Both key sections have separate electrical pads, or contacts. The key has a key top divided into a regular key section and miniature key section, each of which can go between a depressed position and a non-depressed position. The left section  107 B acts as a shift between one key and other key, without taking up the full space or size of a separate key. Pressing the right section  107 A registers only the right section  107 A, while pressing either the left section  107 B or both the right and the left sections  107 A and  107 B simultaneously registers the left section  107 B.  
       FIG. 19  is a top view of a single-section key  108 . The key  108  is attached at a pivot point or axis  109  that equally distributes the force across the entire plane of the key during a key press, similar to the scissors utilized in laptop computer keyboards, but without the necessity of the scissor components. This is accomplished with a compressible and resilient support  106  on the outer edges, as opposed to being underneath. The support  106  may be rubber silicone or another type of material. This design allows for optimal compression into the plane of the keypad sections  100  and  103  and a very thin profile.  FIG. 20  is a side-view cross section showing a depressed key  108  and a compressed support  106  lying in the plane of the bottom keyboard section  103 , as well as a non-compressed support  106  and non-depressed key  108 . An electrical pad  110  is on the underside of the key  108 .  
       FIGS. 21, 22 , and  23  show a top view, a side view, and a front view, respectively, of a computing device and/or an input device, according to an alternative embodiment of the invention. The device of  FIGS. 21, 22 , and  23  is a thumb-held wired or wireless device, and is specifically depicted as a wireless device in  FIGS. 21, 22 , and  23 . The wireless electrical circuitry may be included in the bottom keyboard section  100 B, and the electrical connections are the same as described for the device of  FIGS. 1-11 . In this embodiment of the invention, the user may store the device in a pocket, for instance, and quickly pull out the device for utilization. The device allows for one-handed use without the needed for a flat surface, by being supported by the user&#39;s thumb.  
      The user&#39;s thumb slides into an elastic band  111  and thus supports the weight of the device, enabling the user to use the fingers of his or her hand to utilize the keys of the keyboard sections. The elastic band  111  is more generally considered a thumb loop. The thumb-held device may include one or more folds separating the keyboard sections, with the device of the embodiment of  FIGS. 21, 22 , and  23  depicting two folds separating the keyboard sections  100 A,  100 B, and  103 A. Each keyboard section supports a number of keys, not shown in the figures, which may be implemented as has been described in conjunction with  FIGS. 14-19 , or in another manner. When the keyboard sections fold out, they are substantially extended end to end with respect to one another in an extended position, enabling the user to use the device. By comparison, in a folded position, the keyboard sections are folded over one another, such that the device can be stored.  
       FIGS. 24 and 25  show a side-view cross section and a top view of how the keys of the device of  FIGS. 21-23  and/or the device of  FIGS. 1-11  may be implemented, according to a specific embodiment of the invention. The keys  112  and  113  are shown as depressed and not depressed in  FIG. 24 . That is, the keys  112  and  113  have key tops that can go between a depressed position and a non-depressed position. The keys  112  and  113  are similar to those found on standard laptop computer devices, where the scissor supports are not shown for illustrative clarity, except that the keys  112  and  113  are thinner and contain a miniature key within the larger standard-sized key  113 , with corresponding supports  114  and  115 , respectively. This allows for the saving of space. The keys  112  and  113  lie in the plane of a keyboard section to ensure a thin profile. The supports  114  and  115  are preferably compressible and resilient, and may be fabricated from rubber silicone. The supports  114  and  115  preferably include electrical pads, or contacts, that register their depression. Alternative key designs may be used as well.  
       FIGS. 26 and 27  show a front-view cross-section and a side-view cross section, respectively, of a wrist-worn computing device, according to an embodiment of the invention, in the recessed position. The left and the right endpoints of the keyboard sections  100  and  103  are particularly in their recessed position on the user&#39;s wrist. This shows how the lengths of the keyboard sections  100  and  103  can be adjusted to fit differently sized, wrists. A smaller radius wrist may show the keyboard end points on the left and right closer together, whereas a larger radius wrist may show the left and the right keyboard endpoints farther apart within the slot  117 . The structural casing  116  and the hollow keyboard slot  117  house the keyboard sections  100  and  103  in the recessed position.  
       FIGS. 28 and 29  show a front-view cross section and a top-view cross section, respectively, of the mechanical gears and components used to adjust a user&#39;s wristbands  124 A and  124 B of a wrist-worn computing device, according to an embodiment of the invention. The wristbands  124 A and  124 B can be adjusted for differently sized wrists. Rotation of an adjustable wristband gear rotator  118 A causes an adjustable wristband gear rotational translator  121 A to rotate, which via its gear teeth causes the gear teeth of an adjustable wristband gear rotational translator  121 B to rotate in the opposite direction.  
      This mechanism causes the adjustable wristband  124 A and  124 B to increase and decrease simultaneously in and out of the hollow non-adjustable wristband sleeves  123 A and  123 B, thus keeping the wristband keyboard support  130  stationery and centered beneath the user&#39;s wrist. The rotator  118 A, and its counterpart rotator  118 B, are supported by the support  119 . The translator  121 B has a counterpart translator  121 A as well. Also depicted are the adjustable wristband gear hole receptors  122 A and  122 B. All of these components may be considered in sum as an adjustable gear rotational mechanism in one embodiment of the invention, to adjust the band to fit the user&#39;s wrist.  
       FIGS. 30, 31 , and  32  show a front view, a side-view cross section, and a side view of a wrist-worn computing device, according to an alternative embodiment of the invention. In  FIG. 31  the wrist-worn computing device is in the recessed position, whereas in  FIG. 32  the wrist-worn computing device is in the extended position. The computing device of  FIGS. 30, 31 , and  32  differs from that of  FIGS. 1-11  in that a slide-out mechanism is used to switch between the recessed position and the extended position, as opposed to a fold-out mechanism. The internal electrical wiring is attached via a loose connection connected at no less than two endpoints of the extreme endpoints of the slider extender support  125  and the slider endpoint connector  127 . Alternatively, the wiring may be embedded in the casing of the slider support  125  to maintain physical contact during expansion and contraction. Also depicted are the display mechanism  126 , an extender support torque hinge  128 , an input mechanism support torque hinge  129 , and a wristband keyboard support  130 .  
      It is noted that, although specific embodiments have been illustrated and described herein, it will be appreciated by those of ordinary skill in the art that any arrangement is calculated to achieve the same purpose may be substituted for the specific embodiments shown. This application is intended to cover any adaptations or variations of the present invention. Therefore, it is manifestly intended that this invention be limited only by the claims and equivalents thereof.