Patent Publication Number: US-2006015210-A1

Title: Method for adjusting display parameters of a display device

Description:
BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      The present invention relates to a method for adjusting display parameters of a display device.  
      2. Description of the Related Art  
      As shown in  FIG. 1 , a display device  10  (such as a CRT display device or an LCD display device) comprises a power button  12  and several adjusting buttons  14  disposed on the surface of the display device  10 , a microprocessor  16  and a memory. The power button  12  is used for turning the display device  10  on or off. The adjusting buttons  14  are used for recalling an OSD (on-screen display) interface and adjusting display parameters of the display device  10  which are opened for the user to adjust display parameters such as brightness, contrast, position, scale, size, and so on. The memory  18  is used to store the display parameters, including the display parameters opened and not opened to the user, and a firmware program. The microprocessor  16  reads and executes the firmware program stored in the memory  18 , and reads the display parameters stored in the memory  18  according to the firmware program, so as to adjust the image displayed on the display device  10 .  
      Furthermore, in order to avoid the user incorrectly adjusting the display parameters, and to code one same firmware program capable of fitting diverse types of display device  10 , the manufacturer must set up some values of the display parameters which are not opened to the user, including: a parameter for switching to a warm-up mode or a debug mode, a parameter for enabling or disabling the audio device. However, after the above-mentioned parameters are stored in the memory  18 , these parameters can only be adjusted when the display device  10  is sent back to the manufacturer. If the parameters are just absent or need to be modified, it is very inconvenient for the maintenance engineer at the retailer to adjust the display device  10 .  
      Therefore, it is desirable to provide a method for adjusting display parameters of the display device  10  to mitigate and/or obviate the aforementioned problems.  
     BRIEF SUMMARY OF THE INVENTION  
      Accordingly, an embodiment of the present invention is directed to a method that allows the user or the engineer to adjust the display parameters respectively.  
      To achieve the advantage, and in accordance with the purpose of the present invention as embodied and broadly described, there is provided a method for adjusting display device parameters of a display device, which comprises: (A) determining whether an engineering OSD interface is recalled; (B) adjusting and storing the display parameters displayed on the engineering OSD interface; and (C) adjusting and storing the display parameters displayed on the user OSD interface; wherein the engineering OSD interface is recalled by pressing a hot key, and the display parameters include the display parameters displayed on the engineering OSD interface and the user OSD interface.  
      Also in accordance with the present invention, there is provided a method for adjusting display device parameters of a display device, which comprises: (A) recalling a user OSD interface; (B) determining whether an engineering OSD interface is recalled; (C) adjusting and storing the display parameters displayed on the user OSD interface; and (D) adjusting and storing the display parameters displayed on the user OSD interface; wherein the display device parameters include the manufacturer setting parameters and the user setting parameters.  
      Additional features and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. The features and advantages of the present invention will be realized and attained by means of the elements and combinations particularly pointed out in the henceforth appended claims.  
      It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention, as claimed.  
      The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several embodiments of the present invention and together with the description, serve to explain the principles of the present invention. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  is a schematic drawing of a display device;  
       FIG. 2  is a flowchart of a first embodiment of a method for adjusting display parameters of a display device according to the present invention; and  
       FIG. 3  is a flowchart of a second embodiment of a method for adjusting display parameters of a display device according to the present invention. 
    
    
     DESCRIPTION OF THE EMBODIMENTS  
      Reference will now be made in detail to present embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.  
      In the present invention, a user can press various adjusting buttons  14  of the display device  10  at the same time to recall a user OSD interface or an engineering OSD interface to adjust the display parameters opened to the user or the display parameters opened to the engineer (not opened to the user) respectively. The adjusting buttons  14  can be pressed while the display device  10  is turned on or while the display device  10  is operating.  
      As shown in  FIG. 2 , the method for adjusting display parameters of the first embodiment of the display device  10  in accordance with the invention comprises:  
      Step S 20 : Initializing. When the power button  12  is pressed, the display device  10  executes an initialization procedure.  
      Step S 22 : Determining whether an engineering OSD interface is recalled; if not, step S 26  is performed. A user can recall the engineering OSD interface by pressing hot keys. For example, by pressing at least two adjusting buttons  14 , or by pressing both the power button  12  and the adjusting button  14 . Or, the user may input a password to recall the engineering OSD interface. For example, when the user presses the adjusting buttons  14 , a message requiring a password is displayed; if the user does not key-in the correct password, the microprocessor  16  recalls the user OSD interface; if the user inputs the correct password, the microprocessor  16  recalls the engineering OSD interface.  
      Step S 24 : Adjusting and storing the display parameters displayed on the engineering OSD interface, and then step S 28  is executed. After the engineering OSD interface is called up, engineers can modify the display parameters opened to the engineer and then store the modified display parameters into the memory  18 .  
      Step S 26 : Adjusting and storing the display parameters displayed on the user OSD interface. After the user OSD interface is called up, the user can modify the display parameters opened to the user, i.e., the user setting parameters, and then store the modified display parameters into the memory  18 .  
      Step S 28 : End.  
      As shown in  FIG. 3 , the method for adjusting display parameters of the second embodiment of the display device  10  in accordance with the invention comprises:  
      Step S 30 : Initializing. When the power button  12  is pressed, the display device  10  executes an initialization procedure.  
      Step S 32 : Recalling the user OSD interface. When the user presses the adjusting button  14 , the user OSD interface is called up and displayed on the display device  10 , and so the user or engineer can adjust display parameters opened to the user, i.e., the user setting parameters.  
      Step S 34 : Determining whether an engineering OSD interface is recalled; if not, step S 38  is performed. The engineer can recall the engineering OSD interface by pressing hot keys. For example, by pressing at least two adjusting buttons  14 , or by pressing both the power button  12  and the adjusting button  14 . Or, the user may input a password to recall the engineering OSD interface. For example, when the user presses the adjusting buttons  14 , a message requiring a password is displayed; if the user does not key-in the correct password, the microprocessor  16  recalls the user OSD interface; if the user inputs the correct password, the microprocessor  16  recalls the engineering OSD interface.  
      Step S 36 : Adjusting and storing the display parameters displayed on the engineering OSD interface, and step S 40  is executed. After the engineering OSD interface is called up, engineers can modify the display parameters opened to the engineers, i.e., the manufacturer setting parameters, and then store the modified display parameters into the memory  18 .  
      Step S 38 : Adjusting and storing the display parameters displayed on the user OSD interface. After the user OSD interface is called up, the user can modify the display parameters opened to the user, i.e., the user setting parameters, and then store the modified display parameters into the memory  18 .  
      Step S 40 : End.  
      Other embodiments of the present invention will be apparent to those skilled in the art from consideration of the specification and practice of the present invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the present invention being indicated by the following claims.