Abstract:
In an electric appliance system, an electric appliance for performing designated functions and first and second remote controllers are included. The first remote controller is optionally triggered for controlling a first group of the designated functions, and the second remote controller is optionally triggered for controlling a second group of the designated functions. The second group includes at least one designated function included in the first group and at least one designated function excluded from the first group.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to a method for controlling an electric appliance, and more particularly to a method for controlling an electric appliance through selectable multiple user interfaces. The present invention also relates to the electric appliance system having selectable multiple user interfaces.  
         [0002]     Generally, a household electric appliance has only one kind of control interface, e.g. a single remote controller. Some electronic appliances, e.g. a DVD player/recorder/rewriter (digital versatile disc player, recorder or rewriter), have their control interfaces cooperate with graphics guiding menus shown on a screen for facilitating users&#39; operations. The guiding menus correspond to the triggered buttons of the control interface, and are displayed in a fixed format with fixed contents. As the functions of the appliances increase, the control interface and the graphics guiding menus become more and more complicated. For example, the huge number and complicated arrangement of buttons on a remote controller often confuse the users, particularly the elder people and children.  
         [0003]     Moreover, there might be some functions of the machine or some contents of discs that the parents would not like their children to access. The arbitrary triggering of the complicated buttons may lead to undesired revelation.  
       SUMMARY OF THE INVENTION  
       [0004]     Therefore, the present invention provides a method for adaptive control of an electric appliance in consideration of different needs or different users.  
         [0005]     The present invention also provides an electric appliance system operable with multiple user interfaces so that the electric appliance can be selectively controlled in consideration of different needs or different users.  
         [0006]     The present invention further provides a method for controlling an electric appliance that is able to protect some functions of the electric appliance from being arbitrarily activated or prevent some information from being arbitrarily revealed.  
         [0007]     In an electric appliance system according to the present invention, an electric appliance for performing designated functions and first and second remote controllers are included. The first remote controller is optionally triggered for controlling a first group of the designated functions, and the second remote controller is optionally triggered for controlling a second group of the designated functions. The second group includes at least one designated function included in the first group and at least one designated function excluded from the first group.  
         [0008]     For facilitating users&#39; operations or for some specific uses, the electric appliance system further includes a display in communication with the electric appliance. Then, a first graphics guiding menu can be shown on the display in response to a first command issued from the first remote controller, and a second graphics guiding menu can be shown on the display in response to a second command issued from the second remote controller, wherein the second graphics guiding menu includes at least one selective item included in the first graphics guiding menu and at least one selective item excluded from the first graphics guiding menu.  
         [0009]     In a specific embodiment, the second group includes all designated functions in the first group, and the second graphics guiding menu includes all selective items in the first graphics guiding menu. Under this circumstance, the second remote controller may include more buttons than the first remote controller.  
         [0010]     Despite the first command and the second command may control the same designated function, they are differentially encoded so as to show different graphics guiding menus.  
         [0011]     For example, the electric appliance system can be a DVD player/recorder/rewriter.  
         [0012]     According to another aspect of the present invention, for controlling a DVD player/recorder/rewriter, whether the DVD player/recorder/rewriter is under a controlled mode or a normal mode is determined. A controlled mode is determined when a first command is received from a user. In the controlled mode, a first graphics guiding menu is provided for performing a first group of designated functions. On the other hand, a normal mode is determined when a second command is received from a user. In the normal mode, a second graphics guiding menu is provided for performing a second group of designated functions. The second graphics guiding menu includes at least one selective item included in the first graphics guiding menu and at least one selective item excluded from the first graphics guiding menu. Then, the first graphics guiding menu or the second graphics guiding menu is operated to perform the first group of designated functions or the second group of designated functions. For example, the first command can be issued by triggering a first remote controller and the second command is issued by triggering a second remote controller, and the first command and the second command are differentially encoded when controlling the same function.  
         [0013]     According to a further aspect of the present invention, for controlling a DVD player/recorder/rewriter, an identifying code received from a user is discriminated to be valid or not. A normal mode is determined when the identifying code is valid, and a controlled mode is determined when the identifying code is invalid or the input of the identifying code is incomplete. A first graphics guiding menu is provided for performing a first group of designated functions in the controlled mode, and a second graphics guiding menu is provided for performing a second group of designated functions in the normal mode. The second graphics guiding menu includes at least one selective item included in the first graphics guiding menu and at least one selective item excluded from the first graphics guiding menu. Then, the first graphics guiding menu or the second graphics guiding menu is operated to perform the first group of designated functions or the second group of designated functions. For example, the identifying code can be a password inputted via a remote controller. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0014]     The above objects and advantages of the present invention will become more readily apparent to those ordinarily skilled in the art after reviewing the following detailed description and accompanying drawings, in which:  
         [0015]     FIGS.  1 ( a ) and  1 ( b ) are schematic diagrams showing an embodiment of an electric appliance system according to the present invention;  
         [0016]     FIGS.  2 ( a ) and  2 ( b ) are schematic diagrams showing another embodiment of an electric appliance system according to the present invention; and  
         [0017]      FIG. 3  is a flowchart illustrating a method for controlling an electric appliance according to an embodiment of the present invention. 
     
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0018]     In order to achieve the purpose of adaptive control of an electric appliance, an electric appliance system according to an embodiment of the present invention is illustrated hereinafter with reference to FIGS.  1 ( a ) and  1 ( b ), wherein the electric appliance is operable with multiple user interfaces so that the electric appliance can be selectively controlled in consideration of different needs or different users. In the embodiment of FIGS.  1 ( a ) and  1 ( b ), a DVD player/recorder/rewriter  200  is exemplified as the electric appliance, and a display  22  such as a TV screen or a computer display cooperates with the DVD player/recorder/rewriter  200  for showing video data to be played or showing graphics guiding menus for playback/record control. There are two remote controllers  201  and  202  included in the electric appliance system in addition to the electric appliance  200  and the display  22 . The remote controllers  201  and  202  are a simplified remote controller and an all-function remote controller, respectively. Preferably, the remote controller  202  includes all buttons of the remote controller  201 , i.e. buttons  2021 , and additional buttons  2022  and  2023 , and is able to perform all functions of the remote controller  201  and other functions. In other words, the remote controller  202  works in a normal mode, and the remote controller  201  works in a simplified mode or controlled mode. The remote controller  202  is able to perform a group of designated functions that cannot be performed by the remote controller  201 .  
         [0019]     In the operating example of  FIG. 1 ( a ), it is the remote controller  202  working with the electric appliance  200  and the display  22 . In response to a command issued from the remote controller  202  by triggering buttons of the remote controller  202  and specifically encoded, the electric appliance  200  selects a corresponding graphics guiding menu  232  including a plurality of selective items  2320  to be shown on the display  22 . Then the user may operate one or more of the selective items of the graphics guiding menu  232  to perform designated functions. Of course, the remote controller  202  is also used to activate subsequent graphics guiding menus derived from the graphics guiding menu  232  and control the performance of further designated functions. Via the remote controller  202 , complicated functions can be executed following the instructions of the graphics guiding menu  232 .  
         [0020]     In the operating example of  FIG. 1 ( b ), it is the remote controller  201  working with the electric appliance  200  and the display  22 . In response to a command issued from the remote controller  201  by triggering buttons of the remote controller  201  and specifically encoded, the electric appliance  200  selects a corresponding graphics guiding menu  231  including a plurality of selective items  2310  to be shown on the display  22 . The command issued from the remote controller  201  and the command issued from the remote controller  202  are differentially encoded when the same function is to be controlled so that the electric appliance  200  can discriminate which of the remote controllers is currently triggered and determine which kind of graphics guiding menu should be displayed. As the graphics guiding menu  231  is a simplified guider compared to the graphics guiding menu  232 , the selective items  2310  are a part of the selective items  2320 , and the other selective items  2320  marked with dash lines are hidden from the graphics guiding menu  231 .  
         [0021]     The case illustrated in  FIG. 1 ( b ) is particularly suitable for those who only need basic control functions, such as a beginner, elder people or children. On the contrary, as the second case illustrated in  FIG. 1 ( a ) involves complete and advanced but complicated control, it would be suitable for those skilled in manipulating this electric appliance. Obviously, the remote controller  201  and the graphics guiding menu  231  are easier to be operated by the beginners, elder people or children, but the remote controller  202  and the graphics guiding menu  232  control more functions. Therefore, the two remote controllers  201  and  202  can be selected by different users or in different situations to optionally activate the graphics guiding menus  231  and  232 . Giving a DVD recorder as an example, the basic functions may include playback, stop, volume control, etc, and the advanced functions may include quality control or parental control. Since the remote controller  201  has a considerably reduced number of buttons, it can be made compact in size so as to conform to kids&#39; palms.  
         [0022]     Although graphics guiding menus shown on a display are used in the above examples for facilitating users&#39; operations, they are not essential to the present invention. Particularly for those skilled in manipulating that electric appliance, the function control can be performed with a remote controller or other types of controllers only without showing any selective items on a display, or performed with the cooperation of a remote controller and literal instructions.  
         [0023]     As mentioned above, the commands respectively issued from the remote controllers  201  and  202  are preferably distinguishable. Accordingly, once the electric appliance  200  receives a wireless signal from one of the two remote controllers, which remote controller is currently triggered can be sourced. The distinguishing operation can be performed by firmware. One of the methods is imparting an identification bit to the wireless signal. For example, when the identification bit is “ 0 ”, the electric appliance  200  determines that the wireless signal comes from the remote controller  201 . On the other hand, when the identification bit is “ 1 ”, the electric appliance  200  determines that the wireless signal comes from the remote controller  202 .  
         [0024]     Another embodiment of the present invention for achieving the purpose of adaptive control of an electric appliance is illustrated in FIGS.  2 ( a ) and  2 ( b ), wherein the electric appliance is operated with a single remote controller but selectable graphics guiding menus. The remote controller can be the one used in the embodiment of  FIG. 2 ( a ) or any other suitable one.  
         [0025]     In this embodiment, an identifying code such as a valid password is requested to show the all-function graphics guiding menu  332  ( FIG. 2 ( a )). If the input password is not valid or incomplete when compared with a preset password, only the simplified graphics guiding menu  331  will be shown ( FIG. 2 ( b )). Likewise, the selective items  3310  of the simplified graphics guiding menu  331  are included in the selective items  3320  of the all-function graphics guiding menu  332 . This control method is particularly advantageous when some functions of the electric appliance are to be protected from being arbitrarily activated or some information is to be prevented from being arbitrarily revealed, i.e. in a so-called parental mode.  
         [0026]     For reasonable tolerance of input errors, a threshold is preset and a discriminating method shown in  FIG. 3  is referred. If the occurrences of invalid or incomplete password do not exceed the threshold, it is allowed to be re-input the password to activate the all-function graphics guiding menu  332 . Otherwise, only the simplified graphics guiding menu  331  can be activated.  
         [0027]     To sum up, the present invention provides selectable and adaptive control of an electric appliance. The basic and advanced functions can be selectively performed for different users. Accordingly, the basic operation can be done in a simple and efficient way, while the all-function control is still available without bothering the basic users.  
         [0028]     While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.