Electronic device and method for controlling electronic device

Abstract

An electronic device is provided that includes a memory, a communication unit configured to receive a video image streamed from a first electronic device, a display unit configured to display the video image, and a control unit configured to identify a specific area included in the video image, to store a first image displayed on the specific area at a first time point in the memory, and to store in the memory a second image displayed on the specific area at a second time point when a variation of an image is equal to or more than a predetermined threshold.

What is claimed is: 
     
         1 . An electronic device comprising:
 a memory;   a communication unit configured to receive a video image streamed from a first electronic device;   a display unit configured to display the video image; and   a control unit configured to identify a specific area included in the video image, to store a first image displayed on the specific area at a first time point in the memory, and to store in the memory a second image displayed on the specific area at a second time point when a variation of an image displayed in the specific area is equal to or more than a predetermined threshold.   
     
     
         2 . The electronic device of  claim 1 , wherein the control unit is configured to store the first image so that the first image corresponds to the first time point and to store the second image so that the second image corresponds to the second time point. 
     
     
         3 . The electronic device of  claim 1 , wherein the first and second images are still images. 
     
     
         4 . The electronic device of  claim 1 , wherein the control unit is configured to determine the variation of the image displayed on the specific area based on a variation between the image displayed on the specific area and the first image stored in the memory. 
     
     
         5 . The electronic device of  claim 1 , wherein the control unit is configured to analyze the video image to identify the specific area. 
     
     
         6 . The electronic device of  claim 1 , wherein the control unit is configured to receive information on the specific area from the first electronic device through the communication unit and to identify the specific area based on the received information. 
     
     
         7 . An electronic device comprising:
 a memory;   a communication unit configured to receive a video image streamed from a first electronic device;   a display unit configured to display the video image; and   a control unit configured to identify a specific area included in the video image, to store in the memory a still image reflecting a content displayed on the specific area whenever the content changes, so that the still image corresponds to a time point when the content changes, to determine a time point corresponding to a predetermined request when the request is received, and to call a still image corresponding to the determined time point from the memory.   
     
     
         8 . The electronic device of  claim 7 , wherein the control unit is configured to display both the streamed video image and the called still image on the display unit. 
     
     
         9 . The electronic device of  claim 8 , wherein the control unit is configured to display the still image on a second area of the video image, the second area not overlapping the specific area. 
     
     
         10 . The electronic device of  claim 7 , wherein the controller is configured to replace an image displayed on the specific area of the streamed video image by the still image and to display the replaced still image on the display unit. 
     
     
         11 . An electronic device comprising:
 a memory;   a communication unit configured to receive at least one multimedia data clip from at least one second electronic device;   a display unit configured to display the at least one multimedia data clip; and   a control unit configured to identify a first speaker corresponding to audio data included in the at least one multimedia data clip, to obtain information corresponding to the identified first speaker, and to store the obtained information so that the obtained information corresponds to a first time point for the at least one multimedia data clip.   
     
     
         12 . The electronic device of  claim 11 , wherein the first time point is when the first speaker begins to speak. 
     
     
         13 . The electronic device of  claim 12 , wherein the control unit is configured to analyze audio data included in the at least one multimedia data clip and to determine that the first time point is when a human voice included in the audio data is sensed. 
     
     
         14 . The electronic device of  claim 11 , wherein the control unit is configured to analyze video data included in the at least one multimedia data clip to identify the first speaker. 
     
     
         15 . The electronic device of  claim 14 , wherein the control unit is configured to identify the first speaker based on a lip motion included in the video data. 
     
     
         16 . The electronic device of  claim 11 , wherein information relating to the first speaker includes at least one of personal information on the first speaker, information on a place where the first speaker is positioned, and a keyword which the first speaker speaks. 
     
     
         17 . An electronic device comprising:
 a communication unit configured to receive at least one multimedia data clip streamed from at least one second electronic device;   a memory configured to store the at least one multimedia data clip;   a display unit configured to display video data included in the at least one multimedia data clip; and   a control unit configured to, whenever a speaker corresponding to audio data included in the at least one multimedia data clip changes, store information corresponding to the speaker so that the information corresponds to a time point when the speaker changes, to determine a time point corresponding to a predetermined input when the predetermined input is received, and to call at least part of a multimedia data clip corresponding to the determined time point from the memory.   
     
     
         18 . The electronic device of  claim 17 , wherein the control unit is configured to display both the video data included in the streamed at least one multimedia data clip and video data included in the called at least part of the multimedia data clip. 
     
     
         19 . The electronic device of  claim 17 , further comprising a sound output unit, wherein the control unit is configured to output through the sound output unit at least one of audio data included in the streamed at least one multimedia data clip and audio data included in the called at least part of the multimedia data clip. 
     
     
         20 . The electronic device of  claim 17 , wherein the control unit is configured to display both the video data included in the streamed at least one multimedia data clip and text data corresponding to audio data included in the called at least part of the multimedia data clip.