Patent Publication Number: US-2007120818-A1

Title: Method for selecting input end of display

Description:
FIELD OF THE INVENTION  
      The present invention relates to displays, and in particular to a method for selecting an input end of a display so that the display can display the signals from a selected input end. In the present invention, the user can select switching functions automatically or manually.  
     BACKGROUND OF THE INVENTION  
      Current displays have a plurality of image input ends, such as DVI, D-SUB, VIDEO, S-VIDEO, etc. Of course, displays can accept the signals of different specifications. However how to switch a display to a desired input specification is an important problem.  
      Currently, menu switching is used. Namely, the display will record the previous setting. When the display is actuated next time, the display receives the signals from the previous signal input end and displays the signals without determining whether signals are inputted to the previous signal input end. Therefore when the display has at least two signal input ends or different signal input ends are connected to the display, the user must input the system menu for selection a desired signal input end. The operation is inconvenient.  
      Besides an auto-switching display is designed. Each time the display is actuated, the system searches all the signal input ends. If at least two input signals are searched, the system selects a signal input end according to a predetermined sequence. Therefore each time the display is actuated, it must be set again. The operation is inconvenient. Even there is only one input end has signals, the system will search all input ends so as to have a waiting time.  
     SUMMARY OF THE INVENTION  
      Accordingly, the primary object of the present invention is to provide a method for selecting an input end of a display so that the display can display the signals from a selected input end wherein the user can select switching functions automatically or manually.  
      Furthermore, if a manual switching mode being selected, selecting an input end to be displayed; and if the automatic switching mode is selected, the system processes according to predetermined searching sequence which is then displayed on the display.  
      Moreover if no selection is performed, the system entering into an automatic switching mode.  
      In the present invention, the input signals are one of analog signals and digital signals. The input end has a specification selected from one of DVI, D-SUB, VIDEO and S-VIDEO.  
      Besides, the display is installed with a hot key for selecting the menu by keying the hot key to the auto-switching mode or a menu-switching mode. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  shows the flow diagram of the present invention.  
       FIG. 2  shows the structure of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
      In order that those skilled in the art can further understand the present invention, a description will be described in the following in details. However, these descriptions and the appended drawings are only used to cause those skilled in the art to understand the objects, features, and characteristics of the present invention, but not to be used to confine the scope and spirit of the present invention defined in the appended claims.  
      Referring to  FIGS. 1 and 2 , the process of the present invention is illustrated. The present invention comprises the following steps of: actuating a function menu  20  from a key set  22 ; then selecting switching automatically or manually; if no selection is performed, the system entering into an automatic switching mode  22 ; if a manual switching mode  23  is selected, selecting an input end to be displayed. The system switches the frame according to the selection state so that the signals are displayed on a display. If the automatic switching mode  22  is selected, the system processes according to predetermined searching sequence which is then displayed on the display.  
      The system has a key set  10 , a display unit  30 , a control unit  40  and a signal input unit  50 . The key set  10  is connected to the control unit  40  for actuating the selection menu or input selection item (auto-switching mode  22  or manual switching mode  23 ). Then the control unit  40  performs the selection result. The signals received by the signal input unit  50  is displayed on the display unit  30 .  
      If the switching way is not selected, the display unit is in the auto-switching mode. The control unit  40  will automatically search the signals in the signal input unit  50  according to a predetermined sequence in an internal program and then the signals are transferred to the display unit  30  to be displayed. Or the auto-switching mode  22  is actuated with the same sequence. Furthermore, if the manual switching mode  23  is selected, after switching, the user must select a signal input end to be displayed and then it is displayed by the display unit.  
      The key set  10  may be included with a hot key  101  for actuating the selection menu  21 .  
      Moreover in the present invention, the input signals are one of analog signals and digital signals. The input end has a specification selected from one of DVI, D-SUB, VIDEO and S-VIDEO.  
      The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.