Abstract:
In a multi-function electronic device, consists of a display mounted on the device and a two part cover with each cover part slidable on the device in opposite directions for covering and exposing the display. The two part cover is equipped with a full function keyboard.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     The subject matter of this application relates to an arrangement of components that combines the functions of a multi-use electronic device to optimize their usefulness. More specifically, this application describes an electronic device having a display and a two part cover with each part slidable on the device in opposite directions for covering the display. The two part cover is equipped with a split full function keyboard.  
         [0003]     2. Brief Description of Related Developments  
         [0004]     Mobile telephones and similar communication devices now provide a multitude of services, such as, Internet access, personal information management, facsimile, text messaging, picture, video, radio, in addition to telephone communication. This requires an arrangement of the components in a package that allows the efficient and ergonomically convenient use of the various functions.  
         [0005]     With the introduction of such multi-function electronic devices, it has become increasingly more difficult to design a user interface that enables the user to access the many types of functions and applications available in small hand held devices. It is a particular challenge to present a simple and efficient means by which the user can communicate with the device for browsing, selecting, and operating amidst the wide array of functional choices. The user interface generally consists of a keypad for entering data and commands and a display screen for presenting information relating to operation of the selected function. The keypad and display are in continuous competition for space on the device, as it is desirable that each be as large as possible for ease of use and viewing. This is particularly difficult when it is advantageous to provide a full function keyboard, for example, a QWERTY style keyboard.  
         [0006]     It is a purpose of this invention to use a slidable cover which is split in two to cover and expose the display panel, wherein a keyboard is mounted on the cover to maximize the allotment of space to a display and a keyboard.  
       SUMMARY OF THE INVENTION  
       [0007]     A multi-function electronic device, such as a combination PDA/cellular telephone is designed to provide a wide variety of functions including, at least, a personal digital assistant, and a cellular telephone. The device consists of a body and a cover. The cover is constructed in two parts, with each part sliding in opposite directions on the body from an open position in which the parts are separated to a closed position in which the parts are together.  
         [0008]     The body portion is constructed as a housing that encloses the components of the device in various known configurations to provide a wide variety of functions and applications. These components may include, for example a microprocessor, mobile telephone transceiver, PDA, camera, display driver firmware, display memory and other processor components depending on the features offered to the user.  
         [0009]     In accordance with one aspect of the invention, a display screen is arranged on the top surface of the body and the substantially rectangular shape of the display extends over a majority of the area of the top surface. The two parts of the split cover are slidable over the display to protect the display in a closed mode of operation. The split cover panel is constructed with a transparent window to allow at least a portion of the display screen to be visible in the closed position. A keyboard is constructed in two portions, each mounted on respective parts of the split covers for operation in association with the full display screen or the visible portion of the display screen, depending on the relative position of the parts of the covers. The microprocessor controller adapts the display screen in correlation with the cover positions.  
         [0010]     In accordance with an aspect of the invention, the body of the device has a longitudinal axis and the sliding motion of the cover parts on the body is parallel to the longitudinal axis. In another aspect of the invention, the sliding motion of the cover parts is transverse to the longitudinal axis.  
         [0011]     In accordance with another aspect of the invention the keyboard contains a full QWERTY array of keys and the array is arranged in alignment with the length of the device to maximize its size. In this embodiment the array of keys is operable only in the closed position.  
         [0012]     In accordance with another aspect of the invention the display screen is touch sensitive. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0013]     The device of this invention is explained in more detail below with reference to the accompanying drawing, in which:  
         [0014]      FIG. 1  is a perspective view of an embodiment of a multi-function device with the cover panel in a closed position;  
         [0015]      FIG. 2  is a perspective view of the multi-function device shown in  FIG. 1  with the cover panel in a fully open position;  
         [0016]      FIG. 3  is a block diagram of a PDA/cellphone according to this invention;  
         [0017]      FIG. 4  is a cross sectional view of the device of  FIG. 1 , taken along section lines  1 - 1 ;  
         [0018]      FIG. 5  is a perspective view of an alternate embodiment of a multi-function device with the cover panel in a closed position; and  
         [0019]      FIG. 6  is a perspective view of the multi-function device shown in  FIG. 5  with the cover panel in a fully open position. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0020]     A multifunctional device  10 , for example, a combination PDA and cellular telephone, incorporating features of the present invention is illustrated in the figures. Although the present invention will be described with reference to the embodiments shown in the drawings, it should be understood that the present invention may have many alternate forms. In addition, any suitable size, shape or type of elements or materials could be used.  
         [0021]     Multi-function electronic device  10 , may be designed to provide a wide variety of functions including, personal digital assistant, Internet access, cellular telephone, digital camera, clock, radio, and others. For the purposes of describing the subject invention, only the PDA and cellular functions are discussed, but it is intended that the arrangement described herein may be used with many other functions and services.  
         [0022]     As shown in  FIG. 2 , device  10  is constructed with a body  1  that provides an enclosure  5  for the components of the device  10  and has a longitudinal axis y-y. A display screen  2  is mounted on the top surface  3  of body  1  and is dimensioned to maximize its size relative to surface  3 . A cover module  4  is constructed in two parts  4   a  and  4   b  slidably attached to body  1 . Cover parts  4   a  and  4   b  are movable, as shown by arrows  14  and  15 . In a fully closed position, as shown in  FIG. 1 , cover parts  4   a  and  4   b  engage at transverse joint  30  to fully cover device  10 . In another position, as shown in  FIG. 2 , cover parts  4   a  and  4   b  are separated and extend along axis y-y to a predetermined position in which the display screen  2  is completely exposed for use. Other intermediate positions of operation may be set, depending on the applications and functions provided by the device.  
         [0023]     Cover parts  4   a  and  4   b  may be constructed as substantially mirror images in a semi-tubular shape having an inner enclosed area  5  that conforms generally to the external shape of the body  1 . Each section of the inner enclosure  5  is closed at outer ends  6  and  7  to complete the protective cover  4 . As shown in cross section in  FIG. 4 , the cover parts may be molded with internal rails  8  that engage mating slots  9  molded in the body  1 .  
         [0024]     In one embodiment, of this invention a full function keyboard  11  is constructed in two parts, i.e. in a left module  11   a  and right module  11   b . Module  11   a  is mounted on cover part  4   a  and module  11   b  is mounted on cover part  4   b , each for sliding movement with their respective cover parts. An electrical connection may be established at all times through the interface of rail  8  and slot  9  or by some other means, such as a flexible cable. In this way the keyboard  11  is operable in association with the display  2  and other components of the device. The keyboard modules are aligned for operation along a common axis or orientation generally parallel to the longitudinal axis y-y as the cover parts  4   a  and  4   b  moved on the body.  
         [0025]     In a preferred embodiment of this invention, keyboard  11  is a full function text keyboard, such as a Qwerty style keyboard connected to the components of device  10  in body  1 . Keyboard  11  is positioned parallel to longitudinal axis y-y of body  1  to allow the keys to be spread as widely as possible for convenient use.  
         [0026]     In another embodiment of this invention, a transparent viewing window  12  may be constructed in the cover parts  4   a  and  4   b , as shown in  FIGS. 1 and 2 . Window  12  is constructed in two sections  12   a  and  12   b  on each of the cover parts  4   a  and  4   b . The sections of window  12  are aligned and form a continuous window when the cover parts are in the closed position. A portion of display  2  is viewable through window  12  in the closed position, thereby allowing use of the display  2  for text applications in conjunction with keyboard  11 . Controller  20  controls the content and orientation of the display  2  through display driver  21 .  
         [0027]     An array of softkeys may be provided on a portion of a cover part, such as function buttons  13  on cover part  4   b  and browser button  16  on cover part  4   a.    
         [0028]     Body  1  is of generally rectangular shape and display  2  is mounted thereon in operating connection with the components of the device  10  contained within enclosure  5  of body  1 . The display  2  is arranged on body  1  to maximize its size. As shown, it has a rectangular display area, substantially coextensive with the top surface  3  of body  1 . In one embodiment of this invention, display screen  2  is a touch sensitive display adapted to provide operating functions, for example menu selection, Internet browsing, communications and other functions and may be actuated by a scribe  31 .  
         [0029]     In another embodiment of this invention a keypad deck  17  may be constructed on top surface  3  of body  1  to allow the mounting of additional function keys  18  and browser button  19 . Other components of the device  10  may also be contained on the cover  4 . As shown in  FIGS. 1 and 2 , for example, a microphone  32  and speaker  33  may be arranged on cover part  4   b  and  4   a  respectively. In addition a camera lens  34  could also be contained on one of the cover parts such as  4   a , as shown in  FIGS. 1 and 2 . As shown in  FIG. 3 , the operation of such modules are each controlled through microprocessor controller  20 . In addition the functions available through operational keys and buttons  13 , and  16 , 18 - 19 , may be set according to the application selected by the user and by the position of the cover parts  4   a  and  4   b  through controller  20 .  
         [0030]     In operation, as shown in  FIG. 3 , a controller  20  coordinates the operation of the keyboard  11  with the display screen  2 . A display driver  21  operatively associated with display screen  2  causes images or data to be oriented on the display screen  2  as needed by the application selected by the user, for example in parallel with the keyboard  11  and confined to the area exposed by viewing window  12  in the closed position. A cover position monitor  22  provides a signal indicative of the position of the cover to prompt the controller  20  to activate the keyboard  11  in a predetermined position, for example the closed position and, if the keyboard is not to be used, to deactivate keyboard  11  in, for example the open position, or to activate softkeys  13 , and browser button  16  on the cover part  4  according to the requirement of a selected application. In an alternate embodiment, the keyboard may be arranged for use in several intermediate positions, for particular applications, such as with mobile telephone module  23  or camera module  24 .  
         [0031]     In another embodiment of the invention a PDA module  25  is operatively associated with display screen  2  and keyboard  11  through controller  20 . Similarly a cellular phone module  23  operates through controller  20 . A memory  26  may be provided to store data and programs for executing the various functions provided by the device  10 . These components such as controller  20 , display driver  21 , telephone module  23 , PDA module  25 , memory  26 , may all be enclosed within the enclosure  5  of body  1 .  
         [0032]     In the alternate embodiment of  FIGS. 5 and 6 , the cover  104  is split along joint  130  and the cover parts  104   a  and  104   b  slide transverse to the longitudinal axis y-y, as shown by arrow  115  between a full cover position, as shown in  FIG. 5  and an open position as shown in  FIG. 6 . In this embodiment, keyboard  111  and window  112  would not be split. Other components, such as speaker  132  and microphone  131  could be arranged on cover parts  104   a  and  104   b . Browser button  119  and softkeys  118  maybe arranged on deck  117 . Controller  20  would be adapted to orient the display either longitudinally or transverse depending on the positions of the cover parts.  
         [0033]     It should be understood that the above description is only illustrative of the invention. Various alternatives and modifications can be devised by those skilled in the art with out departing from the invention. Accordingly, the present invention is intended to embrace all such alternatives, modifications and variances which fall with the scope of the appended claims.