Abstract:
A presentation device. The presentation device includes a display panel, a touch panel, and an image projector. The display panel having a display region displays presentation data. The touch panel obtains a coordinate from touch screen input. The image projector projects an indicating point according to the coordinates of the input region and the presentation data to a corresponding region on a screen.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    The present invention relates to a data processing device, a presentation device, and a projection method for presentation, and more particularly to a data processing device, presentation device, and projection method for simulating laser effect by a touch panel.  
           [0003]    2. Description of the Related Art  
           [0004]    In conventional presentation, a presenter has to operate an overhead projector, a slide projector, or a film projector to display the report.  
           [0005]    With the development of multimedia technology, one can edit pictures, voice, animation, or movie by a multimedia computer. In addition, the presentation can be edited by the multimedia computer and displayed by a projector. FIG. 1 shows the conventional multimedia presentation system. The conventional system comprises a data processing device  10  and an image projector  12 . The multimedia data generated by the multimedia computer is displayed on a monitor  11  and projected onto a screen  13  through a projector  12 . A presenter  14  thus gives the presentation according to data displayed on the monitor  11  or the screen  13 .  
           [0006]    During the presentation, the presenter  14  usually uses an indicator pointing device  16  to project an indicator point  15  on the screen  13  to point out a predetermined region to help audience members understand the presentation. Thus, the effect of the presentation and the interaction between the presenter  14  and the audience members is improved.  
           [0007]    Therefore, the indicator pointing device is important for the presenter  14  during the presentation. However, it is inconvenient for the presenter  14  to carry an indicator pointing device. Moreover, the effect of the presentation is degraded when the power of the indicator pointing device is low.  
           [0008]    Recently, some data process devices have touch control function, such as personal digital assistants, which detects input and determines the input coordinate to provide more conventional control of the data devices.  
         SUMMARY OF THE INVENTION  
         [0009]    The object of the present invention is to provide a data processing device, presentation device, and projection method for presentation, which simulates the laser effect by a touch panel. In addition, the effect of the indicator pointing device is represented by software, Therefore, the presenter can explain the presentation without the indicator pointing device. Thus, the cost of the indicator pointing device is saved and the inconvenience of a separate indicator pointing device is avoided.  
           [0010]    To achieve the above-mentioned object, the present invention provides a data processing device including a touch panel and a display panel. The touch panel obtains a coordinate from touch screen input. The display panel having a display region displays predetermined data and an indicating point on the display region according to the coordinates of the input region.  
           [0011]    Moreover, the present invention provides a presentation device including a display panel, a touch panel, and an image projector. The display panel having a display region displays presentation data. The touch panel obtains a coordinate from touch screen input. The image projector projects an indicating point according to the coordinates of the input region and the presentation data to a corresponding region on a screen.  
           [0012]    Moreover, the present provides a projection method of a presentation using a display panel and a touch panel. First, presentation data shown on the display panel is projected onto a screen. Next, a coordinate detected by the touch panel is obtained. Finally, an indicating point according to the coordinates of the input region is displayed. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0013]    The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings, given by way of illustration only and thus not intended to be limitative of the present invention.  
         [0014]    [0014]FIG. 1 shows the conventional multimedia presentation system.  
         [0015]    [0015]FIG. 2 shows the multimedia presentation system according to the embodiment of the present invention.  
         [0016]    [0016]FIG. 3 shows the data processing device according to the embodiment of the present invention.  
         [0017]    [0017]FIG. 4 shows the flow chart of the multimedia presentation system according to the embodiment of the present invention.  
         [0018]    [0018]FIG. 5 shows the outward appearance of the multimedia presentation system according to the embodiment of the present invention. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0019]    [0019]FIG. 2 shows the multimedia presentation system according to the embodiment of the present invention. The multimedia presentation system according to the embodiment of the present invention comprises a data processing device  20  and an image projector  22 . The multimedia data generated by the multimedia computer is displayed on a display region  21  on the display panel and projected onto a screen  23  through a projector  22 . Therefore, a presenter  24  reports the presentation according to data displayed on the screen  23 .  
         [0020]    [0020]FIG. 3 shows the data processing device according to the embodiment of the present invention. In the embodiment, the data processing device can be a desktop computer, a notebook, or a personal digital assistant (PDA) for giving a presentation. The data processing device  20  according to the embodiment of the present invention comprises a touch panel  201  a display panel  203 , and an image projector  205 . The display panel  203  comprises a display region  21  to display the presentation data. Here, the display panel  203  is a liquid crystal display panel. The touch panel  201  detects the region input by the presenter  24  on the touch panel  201  and obtains the coordinates of the input region. The image projector  205  projects the presentation data and an indicator point  25  onto the screen  23 , wherein the position of the indicator point  25  on the screen  23  corresponds to the input region on the display region  21 .  
         [0021]    [0021]FIG. 4 shows the flow chart of the multimedia presentation system according to the embodiment of the present invention. FIG. 5 shows the outward appearance of the multimedia presentation system according to the embodiment of the present invention.  
         [0022]    The operating flow of the multimedia presentation system according to the embodiment of the present invention is described below. In the beginning of a presentation, the data processing device  20  projects the presentation data shown on the display region  21  onto a screen  23  by the image projector  205  (S 1 ). The operation of step S 1  is similar to conventional means, and is omitted to simplify the specification. Next, the presenter  24  operates the function keys  50  using the effect of the indicator point (S 2 ). Next, the presenter  24  selects a predetermined region by touching the display region  21  of the display panel  203 , and the touch panel  201  detects the presence or absence of input therefrom (S 3 ). If present, the touch panel  201  obtains the coordinates of the input region (S 4 ). An indicating point  52 A is generated on the screen  23  to indicate a specific data, wherein the position of the indicating point  52 A on the screen  23  corresponds to the input region on the display region  21  (S 5 ). Next, the touch panel  201  determines whether the function of the indicating point is disabled or not (S 6 ). If not, steps S 3 -S 5  are repeated. For example, if the presenter  23  touches another region on the display region  21 , another indicating point  52 B is generated on the screen  23  according to the coordinate of the present input region detected by the touch panel  201 . If so, the function of the indicating point is terminated. Thus, the effect of the indicator point is simulated without using an indicator pointing device.  
         [0023]    Accordingly, the present invention provides a data processing device, a presentation device, and a projection method for presentation, which simulates the laser effect by a touch panel. In addition, the presenter can give the presentation without a separate indicator pointing device. Thus, the cost of the indicator pointing device is saved and the inconvenience of a separate indicator pointing device is avoided,  
         [0024]    The foregoing description of the preferred embodiments of this invention has been presented for purposes of illustration and description. Obvious modifications or variations are possible in light of the above teaching. The embodiments were chosen and described to provide the best illustration of the principles of this invention and its practical application to thereby enable those skilled in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the present invention as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally, and equitably entitled.