Abstract:
A wireless keyboard base includes a base, a wireless keyboard and a plurality of magnets. The base has a groove to accommodate an edge of an electronic device. The wireless keyboard is disposed on the base and has a wireless communication module to exchange information data with the electronic device. The plurality of magnets are disposed within the groove to magnetically attract the edge of the electronic device.

Description:
RELATED APPLICATIONS 
     This application claims priority to Taiwan Application Serial Number 97220501, filed Nov. 14, 2008, which are herein incorporated by reference. 
     BACKGROUND 
     1. Field of Invention 
     The present invention relates to a computer input device. More particularly, the present invention relates to a keyboard, which is capable of wireless communicating with a matched electronic device. 
     2. Description of Related Art 
     Several Apple electronic devices, e.g. I-Phone or I-Pod, in the market have a touch-control display screen as their only input devices. These electronic devices are often equipped with a larger-size screen (compared with a conventional mobile phone), but not equipped with a keyboard as an input device. However, the keyboard is an input interface that most users got used to since the computer is invented. How to permit a user to use a keyboard to input data into these electronic devices, e.g. I-Phone or I-Pod, with touch-control display screen as their only input devices. 
     SUMMARY 
     It is therefore an objective of the present invention to provide a wireless keyboard base and a portable electronic device. 
     In accordance with the foregoing and other objectives of the present invention, a wireless keyboard base includes a base, a wireless keyboard and a plurality of magnets. The base has a groove to accommodate an edge of an electronic device. The wireless keyboard is disposed on the base and has a wireless communication module to exchange information data with the electronic device. The plurality of magnets are disposed within the groove to magnetically attract the edge of the electronic device. 
     In accordance with the foregoing and other objectives of the present invention, a portable device includes an electronic device, a wireless keyboard base, a wireless keyboard and a plurality of magnets. The electronic device has a magnetically attractable edge. The wireless keyboard base has a groove to accommodate the edge of the electronic device. The wireless keyboard has a wireless communication module to exchange information data with the electronic device. The plurality of magnets are disposed within the groove to magnetically attract the edge of the electronic device. 
     Thus, the present invention provides a wireless keyboard base for an electronic device with a touch-control screen as its only single input device, e.g. I-Pod or I-Phone, such that the electronic device can be equipped with an optional input device without modifying original appearance of the electronic device. 
     It is to be understood that both the foregoing general description and the following detailed description are by examples, and are intended to provide further explanation of the invention as claimed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings, 
         FIG. 1  illustrates a perspective view of an electronic device and its matched keyboard base according to one embodiment of this invention; 
         FIG. 2  illustrates an exploded view of the electronic device as illustrated in  FIG. 1 ; 
         FIG. 3  illustrates a cross-sectional view of the electronic device as illustrated in  FIG. 1 ; 
         FIG. 4  illustrates an enlarged cross-sectional view of the hinge as illustrated in  FIG. 3 ; and 
         FIGS. 5-7  respectively illustrate three different cross-sectional views of three connection statuses of the electronic device 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts. 
       FIG. 1  illustrates a perspective view of an electronic device and its matched wireless keyboard base according to one embodiment of this invention. The electronic device  100  includes a display screen  100   a  and a wireless communication module  100   b . The wireless keyboard base  102  has a base  103 , a wireless keyboard  102   a  and a plurality of magnets  107  (referring to  FIG. 2 ). The wireless keyboard  102   a  has a wireless communication module  102   b . In this embodiment, the electronic device  100  is inserted into a groove  105  arranged along an edge of the wireless keyboard base  102 . The display screen  100   a  can be a touch-control screen, e.g. a capacitive or resistive touch-control display screen, for a user to input data and display data. When the electronic device  100  is coupled with the wireless keyboard base  102  (as illustrated in  FIG. 1 ), the user can use the wireless keyboard  102   a  to input data quickly and watch data displayed by the display screen  100   a . The electronic device  100  can be adjusted its position, i.e. a slanted position relative to the wireless keyboard base  102 . The wireless keyboard  102   a  can be a QWERTY keyboard. In this embodiment, the wireless keyboard  102   a  exchanges information with the electronic device  100  via a wireless communication interface, the wireless communication module  102   b  of the wireless keyboard  102   a  and the wireless communication module  100   b  of the electronic device  100  should be of the same wireless communication interface. The wireless communication interface can be an infrared communication interface, a blue tooth communication interface or a WIFI communication interface. 
       FIG. 2  illustrates an exploded view of the electronic device as illustrated in  FIG. 1 . The wireless keyboard base  102  and the electronic device  100  are both of a generally rectangular shape with a relatively long edge and a relatively short edge. In this embodiment, the electronic device  100  has its relatively long edge  110   a  inserted within the groove  105  along a relatively long edge  103   a  of the wireless keyboard base  102  such that the display screen  100   a  of the electronic device  100  is in landscape view. The groove  105  is a long-strip groove arranged along the relatively long edge  103   a  of the wireless keyboard base  102 . In another embodiment (not illustrated in drawings), the electronic device  100  may have its relatively short edge  101   b  inserted within a groove along a relatively short edge  103   b  of the wireless keyboard base  102  such that the display screen  100   a  of the electronic device  100  is in portrait view. In order to ensure the electronic device  100  to be firmly secured within the groove  105  of the wireless keyboard base  102 , magnet sets  107  are installed within the groove  105 . In this embodiment, the groove  105  has two magnet sets  107 , and each magnet set  107  has three magnets respectively located where indicated by three arrows in the drawings. Moreover, the electronic device  100  should have its relatively long edge  101   a  made from magnetically attractable materials, such as iron, cobalt, nickel, oxide thereof or alloy thereof, which can be magnetically attracted by the magnet sets  107 . 
       FIG. 3  illustrates a cross-sectional view of the electronic device as illustrated in  FIG. 1 .  FIG. 4  illustrates an enlarged cross-sectional view of the hinge as illustrated in  FIG. 3 . From a cross-sectional view, three magnets ( 107   a ,  107   b ,  107   c ) of each magnet set  107  are located at different positions within the groove  105  so as to ensure the electronic device  100  to be firmly secured within the groove  105  at different slanted positions. As the electronic device  100  rotates among different slanted positions (relative to the wireless keyboard base  102 ), its center of gravity moves as well. The magnets ( 107   a ,  107   b ,  107   c ) located at different positions within the groove are used to ensure the electronic device  100  to be firmly secured within thereof. 
     Referring to  FIG. 5 , when an include angle between the electronic device  100  and the wireless keyboard base  102  is 150 degrees, the magnet  107   b  provides a most reliable magnetic force (compared with the other two magnets) to retain the edge of the electronic device  100  within the groove  105 . 
     Referring to  FIG. 6 , when an include angle between the electronic device  100  and the wireless keyboard base  102  is 125 degrees, the magnet  107   c  provides a most reliable magnetic force (compared with the other two magnets) to retain the edge of the electronic device  100  within the groove  105 . 
     Referring to  FIG. 7 , when an include angle between the electronic device  100  and the wireless keyboard base  102  is 100 degrees, the magnet  107   a  provides a most reliable magnetic force (compared with the other two magnets) to retain the edge of the electronic device  100  within the groove  105 . 
     In order to permit the electronic device  100  to be rotatable at least 50 degrees relative to the wireless keyboard base  102 , the inner wall of the groove  105  should be well matched with the outer wall of the electronic device&#39;s relatively long edge  101   a  to achieve such rotation range. The inner wall of the groove  105  as illustrated in  FIG. 5 ,  FIG. 6  and  FIG. 7  is exemplary, not the only embodiment to achieve such rotation range. 
     Although the embodiments discussed herein only illustrate two magnet sets (each magnet set has three magnets) to secure the edge of the electronic device  100  within the groove  105 , any person skilled in the art may adjust quantities of the magnet sets according to actual demands. 
     According to discussed embodiments, the present invention provides a wireless keyboard base for an electronic device with a touch-control screen as its only single input device, e.g. I-pod or I-phone, such that the electronic device can be equipped with an optional input device without modifying original appearance of the electronic device. 
     It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from the scope or spirit of the invention. In view of the foregoing, it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims and their equivalents.