Abstract:
A method for displaying a background screen in a mobile terminal is provided. The method includes resizing at least one of a plurality of background screens according to a first input, displaying at least one of the at least one resized background screen, detecting a second input, and transitioning among the resized background screens based on the detected second input, wherein the background screens respectively include an icon.

Description:
PRIORITY 
       [0001]    This is a continuation application of U.S. patent application Ser. No. 12/900,715 filed on Oct. 8, 2010 in the U.S. Patent and Trademark Office, which claimed the benefit under 35 U.S.C. §119(a) of a Korean patent application filed in the Korean Intellectual Property Office on Oct. 13, 2009 and assigned Serial No. 10-2009-0097255, the entire disclosure of which is hereby incorporated by reference. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present invention relates to a mobile terminal. More particularly, the present invention relates to a method for displaying a background screen in a mobile terminal. 
         [0004]    2. Description of the Related Art 
         [0005]    In general, the term “mobile terminal” refers to a communication device with which a user can communicate and exchange data with another user while mobile. As mobile communication environments for such a mobile terminal are developing more and more, the capabilities of the mobile terminal, which has only previously been used for voice communication, are increasing. For example, with such a mobile terminal, the user may use Audio On Demand (AOD) and Video On Demand (VOD) services, may have mobile visual communication with another user in real time through the use of a camera installed in the mobile terminal, may download and play a game application, or may view a Digital Multimedia Broadcast (DMB) through the use of a DMB receiver. That is, mobile terminals have evolved into a device that enables the user to use various types of information in addition to the voice communication function. 
         [0006]    The increase in capabilities of the mobile terminal leads to an increase in the kinds of applications to select and execute, which in turn means an increase in the kinds of icons, corresponding to applications, which are used to access the applications. However, since the mobile terminal is limited in size, it is not easy to display all icons on a display which likewise has a limited size. 
         [0007]    In order to address such a problem, there has been proposed a method of setting a plurality of background screens displayed on a display unit, disposing a plurality of icons according to the set background screens, and enabling the user to make transitions between the background screens and to use the background screens as needed, so that a large number of icons can all be displayed on one display unit. 
         [0008]      FIGS. 1A-1C  are views illustrating background screens based on a method for displaying a background screen according to the related art. 
         [0009]    Referring to  FIGS. 1A-1C , the user may set a first background screen including icons  1   a,    1   b,  and  1   c,  as shown in  FIG. 1A , a second background screen including icons  2   a,    2   b,  and  2   c,  as shown in  FIG. 1B , and a third background screen including icons  3   a,    3   b,  and  3   c,  as shown in  FIG. 1C . Thereafter, when the user is to execute a specific application, the user identifies the location of an icon corresponding to the specific application while making transitions between the background screens shown in  FIGS. 1A-1C  in order to find the specific application, and executes the specific application by executing the icon when the user has identified the location of the icon. For example, when an icon corresponding an application the user desires to execute is icon  2   a  shown in a background screen shown in  FIG. 1B , the user identifies that icon  2   a  has been registered in the background screen shown in  FIG. 1B  while making transitions between the three background screens shown in  FIGS. 1A-1C , makes a transition to the background screen shown in  FIG. 1B , and executes the icon  2   a,  thereby executing the desired application. 
         [0010]    According to the method of the related art that is described with reference to  FIGS. 1A-1C , icons are set according to background screens, so that all icons can be registered (or disposed) among the various background screens despite there being many icons. However, when the number of executable applications in a mobile terminal increases, the number of icons increases accordingly, thereby causing inconvenience to the user. That is, when there is a large number of icons, it is difficult for the user to remember which background screen an icon corresponding to a desired application is included in. Accordingly, the user must search for the corresponding icon while continuously making transitions between background screens, which causes inconvenience to the user. 
         [0011]    Accordingly, there is a need to develop a method for enabling the user to easily identify icons registered according to background screens so that the user can rapidly execute a desired application. 
       SUMMARY OF THE INVENTION 
       [0012]    An aspect of the present invention is to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the present invention is to provide a method for enabling a user to easily identify icons registered according to background screens so that the user can rapidly execute a desired application. 
         [0013]    In accordance with an aspect of the present invention, a method for displaying a background screen in a mobile terminal is provided. The method includes resizing other background screens, except for a current background screen currently being displayed, among a plurality of background screens to a predefined display size when a predefined key is input, and displaying the resized background screens in predefined regions, respectively, within a display area in which the current background screen is displayed. 
         [0014]    In accordance with another aspect of the present invention, a mobile terminal apparatus for displaying a background screen is provided. The apparatus includes a display unit for displaying a background screen to a user, an input unit for receiving input from the user, and a controller for controlling to resize other background screens, except for a current background screen currently being displayed, among a plurality of background screens to a predefined display size when a predefined key is input, and for controlling to display the resized background screens in predefined regions, respectively, within a display area of the display in which the current background screen is displayed. 
         [0015]    Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0016]    The above and other aspects, features, and advantages of certain exemplary embodiments of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings, in which: 
           [0017]      FIGS. 1A-1C  are views illustrating background screens based on a method for displaying a background screen according to the related art; 
           [0018]      FIG. 2  is a block diagram illustrating the configuration of a mobile terminal according to an exemplary embodiment of the present invention; 
           [0019]      FIG. 3  is a flowchart illustrating a method for displaying a background screen according to an exemplary embodiment of the present invention; 
           [0020]      FIGS. 4A-4C  are views showing a first example of background screens based on a method for displaying a background screen according to an exemplary embodiment of the present invention; and 
           [0021]      FIGS. 5A-5C  are views showing a second example of background screens based on a method for displaying a background screen according to an exemplary embodiment of the present invention. 
       
    
    
       [0022]    Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures. 
       DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS 
       [0023]    The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness. 
         [0024]    The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention is provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents. 
         [0025]    It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces. 
         [0026]    The configuration of a mobile terminal according to an exemplary embodiment of the present invention will now be described with reference to  FIG. 2 . 
         [0027]      FIG. 2  is a block diagram illustrating the configuration of a mobile terminal according to an exemplary embodiment of the present invention. 
         [0028]    Referring to  FIG. 2 , a key input unit  27  includes keys for inputting numeric and text information, and function keys for setting various functions. 
         [0029]    A radio transmission/reception unit  23  performs a wireless communication function of the mobile terminal, and includes a Radio Frequency (RF) module and a modem. The RF module includes an RF transmitter for up-converting a frequency of a transmission signal and amplifying the up-converted signal, and an RF receiver for low-noise amplifying a received signal and down-converting a frequency of the low-noise amplified signal. The modem includes a transmission section for encoding and modulating signals to be transmitted, and a reception section for demodulating and decoding signals received by the RF module. 
         [0030]    An audio processor  25  may include a codec, which may contain a data codec and an audio codec. The data codec processes packet data or the like, and the audio codec processes audio signals, including voice, a multimedia file, etc. In addition, the audio processor  25  converts a digital audio signal received from the modem into an analog signal by means of the audio codec, and reproduces the analog signal. Also, the audio processor  25  converts an analog audio signal generated from a microphone (MIC) into a digital audio signal by means of the audio codec, and transfers the digital audio signal to the modem. In this case, the codec may be provided separately, or may be included in a controller  10  of the mobile terminal. 
         [0031]    The memory  30  includes a Read Only Memory (ROM) and a Random Access Memory (RAM). The memory  30  may be configured by a program memory and a data memory, and may store data for booting and programs for controlling the operation of the mobile terminal. 
         [0032]    A display unit  50  displays a video signal and/or user data on a screen, or displays communication-related data. In this case, the display unit  50  may be constructed with a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), and/or an Active Matrix Organic Light-Emitting Diode (AMOLED). When the LCD, OLED, and/or AMOLED is implemented in a touch screen type, the display unit  50  may serve as an input unit for controlling the mobile terminal together with the key input unit  27 . Therefore, according to an exemplary embodiment of the present invention, the display unit  50  may include a touch screen, and serve as an input unit for controlling the mobile terminal together with the key input unit  27 . 
         [0033]    The controller  10  functions to control general operations of the mobile terminal. According to an exemplary embodiment of the present invention, when there is a plurality of set background screens, the controller  10  performs a control operation in such a manner as to resize background screens, other than the current background screen which is displayed in the display unit  50  according to a predefined key input, to have a predefined display size, and to display the resized background screens in predefined regions of the current background screen, respectively. 
         [0034]      FIG. 3  is a flowchart illustrating the method for displaying a background screen according to an exemplary embodiment of the present invention, and  FIGS. 4A-4C  and  5 A- 5 C are views showing examples of background screens based on the method for displaying a background screen according to an exemplary embodiment of the present invention. Exemplary embodiments of the present invention will now be described with reference to  FIGS. 2 to 5C . 
         [0035]    In step S 301  the controller  10  determines if a predefined key is input by a user. If the controller  10  determines that the predefined key is not input by a user, a corresponding function is performed. However, if the controller  10  determines that the predefined key is input by the user, the controller  10  performs a control operation to resize background screens, other than the current background screen, to a predefined display size in step S 302 , and to display the resized background screens at predefined locations in the current background screen in step S 303 . 
         [0036]    In step S 301 , the predefined key refers to a key which is preset to resize background screens, other than a background screen currently being used by the user, to the predefined display size when a plurality of background screens have been registered in the mobile terminal. For example, when a specified key of the key input unit  27  is input (e.g., when a short or long key signal is input), or when a touch signal is input to the display unit  50  through a touch screen (e.g., when a specified location is touched or is touched for a long period of time), it may be determined that the predefined key is input. Meanwhile, a background screen  410  shown in  FIG. 4A  includes a plurality of icons  411 ,  412 , and  413  for executing specific applications, a background screen  420  shown in  FIG. 4B  includes a plurality of icons  421 ,  422 , and  423 , and a background screen  430  shown in  FIG. 4C  includes a plurality of icons  431 ,  432 , and  433 , which are shown as an example. 
         [0037]    Therefore, when the three background screens  410 ,  420 , and  430  shown in  FIGS. 4A-4C  have been registered in the mobile terminal, and a predefined key input is detected in a state where the background screen  410  is currently being used by the user, the controller  10  performs a control operation to resize the background screens  420  and  430  to a predefined size, as indicated by reference numbers  420   a  and  430   a,  respectively, and to display the resized background screens at predefined locations (or in predefined regions) of a display area in which the current background screen is displayed, as shown in the background screen  410  shown in  FIG. 4A . Also, when a predefined key input is detected in a state where the background screen  420  is currently being used by the user, the controller  10  performs a control operation to resize the background screens  410  and  430  to a predefined size, as indicated by reference numbers  410   a  and  430   a,  respectively, and to display the resized background screens at predefined locations of a display area in which the current background screen is displayed, as shown in the background screen  420  shown in  FIG. 4B . In addition, when a predefined key input is sensed in a state where the background screen  430  is currently being used by the user, the controller  10  performs a control operation to resize the background screens  420  and  410  to a predefined size, as indicated by reference numbers  420   a  and  410   a,  respectively, and to display the resized background screens at predefined locations of a display area in which the current background screen is displayed, as shown in the background screen  430  shown in  FIG. 4C . 
         [0038]    According to another exemplary embodiment of the present invention, the controller  10  may perform a control operation to resize and display icons also included in a resized and displayed background screen, to a predefined size corresponding to or not corresponding to the resized size of the background screen. When the resized background screens  410   a,    420   a,  and  430   a  and icons included in each corresponding background screen are resized and displayed together, as shown in the background screens shown in  FIGS. 4A-4C , the user may easily visually identify which icons have been registered or disposed in each background screen. 
         [0039]    Also, according to another exemplary embodiment of the present invention, the controller  10  may perform a control operation such that the resized and displayed background screens have a characteristic (e.g., transparency, background color, a background image, etc.) for distinguishing the resized and displayed background screens from the current background screen. For example, in order to distinguish a resized and displayed background screen from the current background screen, the controller  10  may control the transparency of the resized and displayed background screen (e.g., to a transparency selected from a range of 0% to 100%), may change the background color of the resized and displayed background screen to a color different from the color of the current background screen, or may change the background image of the resized and displayed background screen to an image (e.g., wallpaper) different from the image of the current background screen. 
         [0040]    After steps S 301  to S 303 , the controller  10  emphatically displays a predefined icon in each resized and displayed background screen in step S 304 . 
         [0041]    According to an exemplary embodiment of the present invention, the controller  10  may record an icon execution history performed by the user in a database, for example, in such a manner as to count the number of times of execution of each icon and/or an execution time of each icon, through which the controller  10  can identify the number of times of execution (or selection), and/or an execution (or selection) time according to each icon. Accordingly, according to an exemplary embodiment of the present invention, the controller  10  may emphatically display an icon executed by the largest number of times or a most recently executed icon among icons registered in each background screen so as to distinguish the corresponding icon from other icons. In this case, emphatically (or distinctively) displaying an icon according to an exemplary embodiment of the present invention denotes displaying the corresponding icon in a larger size than other icons or in a reversed form thereof. Through such a visual effect, the user can easily identify one or more icons which have been the most recently or frequently executed. 
         [0042]    On the assumption that the most frequently or most recently used icon in each background screen corresponds to the icon  411  in the background screen  410 , the icon  421  in the background screen  420 , and the icon  431  in the background screen  430 , an example of the operation performed in step S 304  will now be described with reference to  FIGS. 5A-5C . 
         [0043]    The background screen shown in  FIG. 5A  shows a modified example of the exemplary embodiment of the present invention described with reference to the background screen shown in  FIG. 4A . In more detail, the background screen shown in  FIG. 5A  shows an example where the background screens  420  and  430  are resized to the background screens  420   a  and  430   a  and displayed, and icons  421  and  431  (see  FIGS. 4B-4C ), which are the most frequently or most recently used in the corresponding background screens  420  and  430 , are resized/emphasized and displayed as icons  421   a  and  431   a.  The background screens shown in  FIGS. 5B and 5C  may be described in a similar manner to that described on the background screen as shown in  FIG. 5A . Accordingly, icons  411   a  and  431   a  are resized/emphasized and displayed as part of background screens  410   a  and  430   a,  respectively, in background screen  420  shown in  FIG. 5B . And icons  421   a  and  411   a  are resized/emphasized and displayed as part of background screens  420   a  and  410   a,  respectively, in background screen  430  shown in  FIG. 5C . Although the above description with reference to  FIG. 5A  and step S 304  has been given on the case where only one icon is emphatically displayed according to each background screen, a plurality of icons may be emphatically displayed according to each resized and displayed background screen, which can be set by the user. For example, the controller  10  may emphatically display icons executed equal to or more than a predefined number of times according to each resized and displayed background screen. In this case, when icons are emphatically displayed, the user may set to preferentially emphasize and display the most recently executed icon, to preferentially emphasize and display the most recently executed icon, or to preferentially emphasize and display the most recently executed icon and the most recently executed icon at the same time. Also, the user may preset an icon to be emphatically displayed in a predefined background screen when the predefined background screen is resized and displayed. 
         [0044]    After steps S 301  to S 304 , the controller  10  determines if one of the resized background screens is selected in step S 305 , and makes a transition to a selected background screen in step S 306  when it is determined that one of the resized background screens is selected. 
         [0045]    When background screens and icons are resized and displayed, the user can identify a background screen in which an icon corresponding to an application desired to be executed by the user through the resized and displayed background screens and icons, and can make a transition to the corresponding background screen in order to execute the desired application. For example, in a state where the current background screen  420  and resized background screens  410   a  and  430   a  are displayed as shown in  FIG. 4B , when an icon corresponding to an application desired to be executed by the user is located in the resized background screen  410   a,  the user may select the resized background screen  410   a  to make a transition to the background screen  410 . When a transition has been made to the background screen  410 , a list of icons  411 ,  412 , and  413  registered in the background screen  410  is displayed in the background screen  410 , and the user may execute one of the icons registered in the background screen  410  displayed by the transition so as to request a corresponding application to be executed. In this case, the selection of a resized background screen can be achieved by a key input (e.g., a directional key input) through the key input unit  27 , or by a touch screen input such as either touching the resized background screen or dragging into the resized background screen. Also, according to an exemplary embodiment of the present invention, when the mobile terminal includes a device, such as an earth magnetic field sensor, sensing the motion of the mobile terminal, the user can request a transition to a resized and displayed background screen by moving the mobile terminal to a location of the resized and displayed background screen. For example, in a state where the background screen  410  shown in  FIG. 4A  is displayed, the user may move the mobile terminal to the left to make a transition to the background screen  420 , or may move the mobile terminal to the right to transition to the background screen  430 . 
         [0046]    Separately from steps S 305  and S 306 , when an icon emphasized by the user is selected in step S 307 , the controller  10  performs a control operation to execute an application corresponding to the selected icon in step S 308 . 
         [0047]    An application desired by the user may be executed by making a transition to a background screen, as described in steps S 305  and S 306 , and then executing an icon corresponding to the desired application, or an additional adjustment of the mobile station by the user may be required for executing the desired application. Therefore, according to an exemplary embodiment of the present invention, there is proposed a method for immediately executing an application corresponding to only an emphatically displayed icon when the emphasized icon is selected. 
         [0048]    For example, as shown in the background screen shown in  FIG. 5C , when an icon  421  corresponding to an application desired to be executed by the user is emphatically displayed as an icon  421   a,  the user can request an immediate execution of the application corresponding to the icon  421  by selecting or executing the icon  421   a.  In this case, the selection of the emphatically displayed icon  411   a,    421   a,  or  431   a  may be achieved by a direction key input, by a touch screen input, or by a motion of the mobile terminal, as well. 
         [0049]    After step S 306  and step S 308 , the controller  10  determines if a predefined key signal, as input in step S 301 , is again input in step S 309 , and performs a control operation to make the resized and displayed background screen disappear in step S 310  when the predefined key signal is again input. 
         [0050]    When the predefined key signal is again input, the controller  10  performs a control operation to make the resized and displayed background screens (e.g., background screens  410   a,    420   a,  and  430   a ) disappear from a background screen as shown in  FIGS. 4A-4C  and  5 A- 5 C so that only the current background screen (or a background screen resulting from a transition) can be displayed in the display unit  50 . Through this, the user can more easily identify icons registered in the background screens. 
         [0051]    Although the technical aspects of the present invention have been described in detail with the exemplary embodiments of the present invention, it should be appreciated that the exemplary embodiments described above are not limiting, but are instead only illustrative. 
         [0052]    According to exemplary embodiments of the present invention, the user can easily identify icons registered according to each background screen, so that the user can rapidly execute a desired application. 
         [0053]    In addition, according to the exemplary embodiments of the present invention, one or more frequently or recently executed icons among icons registered in each background screen are emphatically displayed, so that the user can rapidly and easily execute frequently or recently executed applications. 
         [0054]    Certain aspects of the present invention can also be embodied as computer readable code on a computer readable recording medium. A computer readable recording medium is any data storage device that can store data which can be thereafter read by a computer system. Examples of the computer readable recording medium include Read-Only Memory (ROM), Random-Access Memory (RAM), CD-ROMs, magnetic tapes, floppy disks, and optical data storage devices. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. Also, functional programs, code, and code segments for accomplishing the present invention can be easily construed by programmers skilled in the art to which the present invention pertains. 
         [0055]    While the invention has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.