Method and system for controlling dual-processing of screen data in mobile terminal

Abstract

A method of controlling a screen of a mobile terminal and an apparatus permits outputs of common screen data and dual-processed data output by a display screen and an external screen. A method of outputting screen data in a mobile terminal includes: generating screen data for displaying on a display unit and screen data for displaying on an external display unit; performing dual-processing of the generated screen data; detecting a progress state of the performance of a function of the mobile terminal; embedding progress data to the dual-processed screen data for the external display unit representing the progress state of the performance of the function of the mobile terminal; and outputting the dual-processed screen data for the display unit and transmitting the dual-processed screen data for the external display unit to the external display unit, wherein the dual-processed screen data for the display unit does not have embedded therein the progress data representing the progress state.

What is claimed is: 
     
         1 . A method of outputting screen data in a mobile terminal, the method comprising:
 generating screen data for displaying on a display unit and screen data for displaying on an external display unit;   performing dual-processing of the generated screen data;   detecting a progress state of the performance of a function of the mobile terminal;   embedding progress data to the dual-processed screen data for the external display unit representing the progress state of the performance of the function of the mobile terminal; and   outputting the dual-processed screen data for the display unit and transmitting the dual-processed screen data for the external display unit to the external display unit,   wherein the dual-processed screen data for the display unit does not have embedded therein the progress data representing the progress state.   
     
     
         2 . The method of  claim 1 , wherein the dual-processed screen data for the external display unit has a different configuration from the dual-processed screen data for the display unit of the mobile terminal. 
     
     
         3 . The method of  claim 2 , further comprising performing a functional control to the dual-processed screen data for the external display unit using the dual-processed screen data for the display unit of the mobile terminal. 
     
     
         4 . The method of  claim 3 , wherein the dual-processed screen data for the external display unit comprise information item set by a user setting. 
     
     
         5 . The method of  claim 4 , further comprising providing an information item corresponding to an event that is generated in the mobile terminal through the external display unit. 
     
     
         6 . A mobile terminal comprising:
 a control unit configured to generate screen data for displaying on a display unit and screen data for displaying on an external display unit, to perform dual-processing of the generated screen data, to detect a progress state of the performance of a function of the mobile terminal, to embed progress data to the dual-processed screen data for the external display unit representing the progress state of the performance of the function of the mobile terminal;   a communication unit configured to transmit the dual-processed screen data for the external display unit to the external display unit; and   the display unit configured to display the dual-processed screen data for the display unit,   wherein the dual-processed screen data for the display unit does not have embedded therein the progress data representing the progress state.   
     
     
         7 . The mobile terminal of  claim 6 , wherein the control unit generates the dual-processed screen data for the display unit and the dual-processed screen data for the external display unit having different screen configuration. 
     
     
         8 . The mobile terminal of  claim 7 , wherein the control unit controls the dual-processed screen data for the external display unit in response to user control using the dual-processed screen data for the display unit of the mobile terminal. 
     
     
         9 . The mobile terminal of  claim 8 , wherein the control unit generates the dual-processed screen data for the external display unit including information item set by a user setting. 
     
     
         10 . The mobile terminal of  claim 6 , further comprising a frame buffer configured to buffer the dual-processed screen data for the display unit provided to the display unit and the dual-processed screen data for the external display unit provided to the external display unit. 
     
     
         11 . The mobile terminal of  claim 10 , wherein the frame buffer divides the dual-processed screen data for the display unit provided to the display unit and the dual-processed screen data for the external display unit provided to the external display unit to buffer the same. 
     
     
         12 . The mobile terminal of  claim 11 , wherein the frame buffer comprises:
 a display frame buffer configured to buffer the dual-processed screen data for the display unit provided from the control unit to the display unit; and   a external display frame buffer configured to buffer the dual-processed screen data for the external display unit provided from the control unit to the external display unit.   
     
     
         13 . A screen data outputting apparatus of a mobile terminal, the apparatus comprising:
 a control unit configured to generate respective screen data provided to a display unit and an external display unit, to perform dual-processing of the screen data, to detect a progress state of the performance of a function of the mobile terminal, to embed progress data to the dual-processed screen data for the external display unit representing the progress state of the performance of the function of the mobile terminal;   a storage unit configured to buffer the respective dual-processed screen data provided to the display unit and the external display unit;   the display unit configured to display the dual-processed screen data for the display unit; and   a communication unit configured to transmit the dual-processed screen data for the external display unit to be output to the external display unit,   wherein the dual-processed screen data for the display unit does not have embedded therein the progress data representing the progress state.   
     
     
         14 . The screen data outputting apparatus of  claim 13 , wherein the control unit generates the dual-processed screen data for the display unit and the dual-processed screen data for the external display unit having different screen configuration 
     
     
         15 . The screen data outputting apparatus of  claim 14 , wherein the control unit provides the dual-processed screen data to the storage unit. 
     
     
         16 . The screen data outputting apparatus of  claim 15 , wherein the control unit controls the dual processed screen data for the external display unit in response to user control using the dual-processed screen data for the display unit. 
     
     
         17 . The screen data outputting apparatus of  claim 16 , wherein the storage unit comprises a frame buffer configured to buffer the dual-processed screen data transmitted from the control unit. 
     
     
         18 . The screen data outputting apparatus of  claim 17 , wherein the frame buffer comprises:
 a display frame buffer configured to buffer the dual-processed screen data for the display unit transmitted from the control unit to the display unit; and   an external display frame buffer configured to buffer the dual-processed screen data for the external display unit transmitted from the control unit to the external display unit.