1. Field
Embodiments of the present invention may relate to an apparatus and method for selectively outputting data inputted from a plurality of input units based on a switching operation.
2. Background
If a user sets an output unit to output data inputted from a predetermined input unit, then the output unit may continuously output the data until the user resets the output unit. For example, a user may use an output unit to receive digital multimedia broadcasting (DMB) data from a first input unit (or a first input apparatus) and navigation data from a second input unit (or a second input apparatus) at a same time or at substantially a same time. If the user initially sets the output unit to display video data of the received DMB data and to output audio data of the received navigation data, then the output unit may be continuously operated based on the initial setting even though the DMB data may be interrupted (or is corrupted).
That is, even if the DMB data is not normally inputted, the output unit may display abnormal DMB data while outputting the audio data of the navigation data.
If a terminal includes a DMB function and a navigation function, a user may be allowed to select the DMB function of the terminal for watching a DMB program while the terminal performs the navigation function. The user may also be allowed to select the navigation function while watching the DMB program.
When the user selects both the navigation function and the DMB function for operations at a same time, the terminal may be set to perform the DMB function. In this case, the terminal may output audio data for navigation while outputting the DMB program through a display device and a speaker. More specifically, the terminal may output the audio data for navigation through a speaker while outputting the DMB program through the display device and the speaker. Therefore, the user may be guided to a destination while watching the DMB program.
If the user terminates the DMB function, then the terminal may not only reproduce the audio data for navigation through the speaker but may also display a map for navigation through the display device.
However, such an output unit for DMB and navigation may not display visual information of navigation when the user selects the DMB function. Although the DMB signal may be very weak, the output unit may not display the visual information of navigation.
If the DMB signal is very weak, the DMB module of the output unit may display a predetermined still image and transition into a pause state until a normal signal is received. Although the DMB module displays a predetermined still image and is in the pause state, the output unit may output the audio data of the navigation with only the predetermined still image displayed. That is, the user may be unable to watch the visual information of the navigation.