Abstract:
The invention relates to a device comprising a display and a keypad. To allow easy text input, the keypad is divided into at least two sections, each of the sections being pivotable around an axis.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     The invention relates to a device comprising a display with a case and a keypad.  
         [0003]     2. Discussion of Related Art  
         [0004]     Current electronic devices, such as mobile phones, mobile gaming devices, mobile personal digital assistants and others, comprise a display, displaying text and graphics as well as keypads for text input and controlling the devices.  
         [0005]     It is known to provide mobile phones with a display and a keypad, which are pivotable against each other. Pivotable may comprise swinging and rotating the keypad around an axis. In these so called clam shell form factor devices, the keypad can be pivoted around an axis which is parallel to the display plane and parallel lower and upper boundary of the display. The keypad can be rotated onto the display with the keys facing the display in closed state. When operating these devices, the keypad can be swung into an open state, such that the display and the keys are directed in the direction of the user.  
         [0006]     It is also known to provide mobile phones with sliding keypads. These sliding form factor devices enable sliding the keypad back and forth from the case. It can also be possible to slide a cover protecting the keypad into a position giving free access to the keypad.  
         [0007]     However, there is a growing need for credible concepts in the mobile world for text entry and gaming. In particular, ergonomics and usability are important for a text input or a mobile gaming. However, current keypads do not allow text input as is possible with common computer keyboards. The horizontal distance between the keys on the keypad needs to be increased to allow improved text input.  
       BRIEF SUMMARY OF THE INVENTION  
       [0008]     To provide easy text input, implementation of the invention provide a device comprising a display within a case and a keypad, wherein the keypad is divided into at least two sections each of which comprises at least one key of the keypad, and the sections are pivotable around at least one axis.  
         [0009]     By sectioning the keypad into two sections, these two sections can be pivoted against each other to increase the horizontal distance between the keys on the keypad. For instance, having two sections and rotating these sections each by 90 degree in a plane parallel to the display plane would enable providing a keypad which is similar to a typewriter keyboard.  
         [0010]     Attaching each of the sections pivotable_around a single common axis, as provided by one implementation, enables increasing the horizontal distance between the keys of the keyboard. A similar effect results when two adjacent axes are used each section pivotable about a respective one of the axes.  
         [0011]     Another implementation provides an axis which is projecting from the case. The axis may be provided by pins, bolts, or bosses, or any other suitable means. The sections of the keypad may be attached to the projecting axis, enabling swinging the sections around this axis.  
         [0012]     A further implementation provides the axis orthogonal to a display plane of the display. In such an implementation, the sections are pivotable in a plane, which is parallel to the display plane. The orthogonal axis connects the display case with the sections. The sections may be pivoted into a closed position, where they can at least partially cover the display. When pivoting the sections in an open position, the display is uncovered. The plane of the sections of the keyboard can be parallel to the display plane.  
         [0013]     According to another implementation, at least one axis is provided by a pin projecting from the case. This pin enables securing the sections pivotably to the case.  
         [0014]     A compact design may be provided by connecting the sections to only one single axis. This one axis may be formed by a bolt, pin or boss or any other means and can project from the case. The sections may be connected to this one axis and can be pivoted around this axis.  
         [0015]     To increase usability enabling adjusting the display plane and the keypad plane to each other, an implementation provides the display plane and the axis pivotable against each other. In such a case, the display may be pivoted, for instance, in an up-right position, still having the plane of the keypad parallel to a table or the ground. The angle between the display plane and the plane of the sections may be variable.  
         [0016]     To enable easy text input, an implementation provides sections that are pivotable in the same plane. These sections enable easy text input, as the keys of the sections are substantially in the same plane.  
         [0017]     A further implementation provides that the sections are pivotable in a plane parallel to the display plane. This enables a compact design.  
         [0018]     To enable connecting the sections to the axis, an implementation provides at least one section with a take-up for connecting to the axis. The take-up may be a borehole or an aperture enabling connecting the section to the axis, which can be a pin, bolt or boss and enabling pivoting the section around the axis.  
         [0019]     Further, an implementation provides the take-ups at an upper or a lower end of the sections. This assembly enables pivoting the sections against each other in a same plane without obstructing each other.  
         [0020]     Another implementation provides side arms connecting the take-ups with the keys of the keypad. The side arms can, according to a further implementation, be formed to provide at least one aperture between the sections in closed position providing at least one view onto at least a part of the display. In this implementation, a user may see the display even without swinging the sections apart.  
         [0021]     To provide communication of electrical signals, the pin provides electrical connections between electrical components within the case and the keypad, according to an implementation.  
         [0022]     Further, wireless communication is provided using a wireless communication device. This enables communicating inputs with the keypad to a remote device.  
         [0023]     The device may be suited for mobile communication, mobile gaming, or remote controlling according to further implementations.  
         [0024]     Another implementation enables detaching the keypad from the display wherein the display is comprised within a first case and the sections and the axis are assembled with each other in an assembly, and the case and the assembly are detachable. According to this implementation, the pin may be arranged within the case of the display, in such a way that it can be removed from the case. The pin fastens the sections with each other still being pivotable around the pin. In this implementation, the keypad with its pivotable sections may be used separately from the display.  
         [0025]     To enable communication between elements within the first case and elements within the assembly, wireless communication elements are arranged within the case and the assembly, respectively. These wireless communication elements may, for instance, be bluetooth communication elements or any other elements supporting wireless communication protocols. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0026]     The Figures show:  
         [0027]      FIG. 1 a  device with two rotational axes in closed position;  
         [0028]      FIG. 2 a  device with two rotational axes in open position;  
         [0029]      FIG. 3 a  device with one rotational axis in closed position;  
         [0030]      FIG. 4 a  device with one rotational axis in open position;  
         [0031]      FIG. 5 a  device as depicted in  FIG. 4  with a different orientation of the display;  
         [0032]      FIG. 6 a  sectional view of a section as depicted in  FIG. 5 ;  
         [0033]      FIG. 7  an exploded view of the sectional view shown in  FIG. 6 ;  
         [0034]      FIG. 8  another sectional view with an axis for pivoting the display and the section against each other;  
         [0035]      FIG. 9 a  sectional view of the device as shown in  FIG. 8  with the display and the sections rotated against each other;  
         [0036]      FIG. 10  another implementation for rotating the display and the sections against each other;  
         [0037]      FIG. 11  an implementation as shown in  FIG. 10  with the display and the sections rotated against each other;  
         [0038]      FIG. 12 a  further implementation with the sections located behind the display in closed position;  
         [0039]      FIG. 13 a  device as depicted in  FIG. 12  in open position. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0040]      FIG. 1  shows an implementation of a device  1  according to the invention. The device  1  comprises a case  2 , with a display  4 . From case  2 , two pins  8  are projecting, providing a rotation axis for rotating the sections  6   a ,  6   b  of a keypad, respectively.  
         [0041]     The sections  6   a ,  6   b  comprise keys  3 , which together form a whole keypad. The keys  3  are connected by side arms  5   a ,  5   b  with take-ups  7   a ,  7   b  for connecting the sections  6   a ,  6   b  to the pins  8 . The two pins  8  are arranged such that the sections  6   a ,  6   b  can be rotated around the pins  8  without obstructing each other.  FIG. 1  shows a closed position of device  1 , where the sections  6   a ,  6   b  are located close to each other. The side arms  5   a ,  5   b  are formed such that an aperture  9  is formed. This aperture  9  enables a direct view onto display  4  even in the depicted closed position of the sections  6   a ,  6   b.    
         [0042]      FIG. 2  shows a device  1  as shown in  FIG. 1  with the same elements, denoted by the same reference numbers. The sections  6   a ,  6   b  are rotated around the pins  8  into an open position. Within this open position, the keys  3  of the sections  6   a ,  6   b  have an increased horizontal distance. Text input is made easier, as users may use both hands when inputting text. Inputting text with ten fingers is possible with the sections  6   a ,  6   b  being swung into the depicted open position. As can be seen, the arrangement of pins  8  and take ups  7   a ,  7   b  is such, that even when swinging the sections  6   a ,  6   b  around the pins  8 , the sections do not obstruct each other. In open position, the user has a direct view onto display  4 , which is not obstructed at all by the sections  6   a ,  6   b.    
         [0043]      FIG. 3  shows a similar device  1 ′ as already depicted in  FIG. 1 . This device  1 ′ is comprised of same elements, which are denoted by dashed reference numbers. The difference between device  1 ′ and device  1  is that only one pin  8 ′ is provided. Pin  8 ′ is projecting from case  2 ′. Take ups  7   a ′,  7   b ′ are arranged such that both sections  6   a ′,  6   b ′ can be fastened to pin  8 ′. Further, take ups  7   a ′,  7   b ′ are connected to sections  6   a ′, and  6   b ′ with side arms  5   a ′,  5   b ′. The sections  6   a ′,  6   b ′ can be pivoted around pin  8 ′ without obstructing each other.  FIG. 3  shows the closed position of device  1 ′. The side arms  5   a ′,  5   b ′ provide an aperture  9 , as already depicted in  
         [0044]      FIG. 1 . However, the side arms may also be formed not providing an aperture  9  and thereby covering display  4 .  
         [0045]      FIG. 4  shows device  1 ′ as shown in  FIG. 3  in an open position. Again, the horizontal distance between the keys  3  located on the sections  6   a ′,  6   b ′ is increased to enable easy text input.  
         [0046]      FIG. 5  shows a device  1 ′ as shown in  FIG. 4  with the display being oriented in another position. The display may be controlled such that the text or the content within the display is presented to the user in the correct orientation. With the device as shown in  FIG. 5 , the orientation of the content within the display  4  is shifted by 180° against the orientation of the content within the display  4  as shown in  FIG. 4 . The keys within sections  6   a ′,  6   b ′ as shown in  FIG. 5  provide even better ergonomics.  
         [0047]      FIG. 6  is a sectional view of a device  1 ′ as indicated in  FIG. 5 . Shown is a pin  8 ′ to which connected are sections  6   a ′,  6   b ′. The pin is fastened within case  2 ′. The sections are fastened to pin  8 ′ by discs.  
         [0048]     The pin  8 ′ may be fastened detachably to case  2 ′. This enables demounting the pin  8 ′ together with the sections  6   a ′,  6   b ′ from case  2 ′, as is depicted in  FIG. 7 . Such an arrangement enables using the keypad separately from case  2 ′ and display  4 ′. In such an arrangement, communication between elements within case  2 ′ and the keypad may be enabled using wireless communication. For instance, communication elements (not depicted) within case  2 ′ and sections  6   a ′,  6   b ′ can provide wireless communication. This wireless communication may, for instance, be Bluetooth™ communication or (according to) any other communication protocol.  
         [0049]      FIG. 8  shows an arrangement, where pin  8 ″ is connected to an arm  12 . Arm  12  provides a connection to pin  10 , which axis is orthogonal to the axis of pin  8 ″. Providing this arrangement enables pivoting the plane of sections  6   a ′,  6   b ′ around pin  8 ″ and arm  12  around pin  10 . This enables, on the one hand, pivoting the section  6   a ′,  6   b ′ such that the horizontal distance between the keys  3  is increased. And, on the other hand, pivoting case  2 ″ around pin  10  to change the angle between the sections  6   a ′,  6   b ′ and display  4 .  
         [0050]     The previously described embodiments showed sections  6   a ,  6   b  in a plane parallel to the plane of display  4 . With an implementation as depicted in  FIGS. 8, 9 ,  10 ,  11 , the angle between display  4  and sections  6   a ′,  6   b ′ may be changed. In this case, the plane of the sections  6   a ′,  6   b ′ need not to be parallel to the plane of the display  4 . The display may, for instance, be rotated by any angle between 0° and 90°, for example into an upright position.  
         [0051]      FIG. 10  shows a similar arrangement, where arm  14  connects pin  8 ″ with pin  10 ′. Pin  10 ′ is located outside case  2 ′″, for instance, connected to boss  15 . This arrangement enables rotating case  2 ′″ against the plane of sections  6   a ′,  6   b ′ with a higher degree of freedom. The case  2 ′″ does not obstruct rotating arm  14  around pin  10 ′ by more than 90°.  
         [0052]      FIG. 11  shows a position, where case  2 ′″ is rotated around axis  10 ′ to provide an angle between the plane of the display  4  and the plane of sections  6   a ′,  6   b′.    
         [0053]      FIG. 12  shows another possible implementation of a device  1 ″. According to this implementation, the two pins  8  are located on the side opposite to display  4  on case  2 . In this arrangement, display  4  is always unobstructed by sections  6   a ″,  6   b ″. The display  4  is always in front of the sections  6   a ″,  6   b ″. The sections  6   a ″,  6   b ″ are connected to pins  8  by take-ups  7   a ″,  7   b ″. Shown in  FIG. 12  is the closed position of sections  6   a ″,  6   b″.    
         [0054]     Shown in  FIG. 13  is the device  1 ″ in an open position, where the sections  6   a ″,  6   b ″ are rotated against the pins  8 . Again, this position of sections  6   a ″,  6   b ″ enables easy text input.