Image photographing apparatus and method of controlling the same

Abstract

An image photographing apparatus simultaneously photographs a moving image and a still image in a simultaneous photographing mode, recognizes a still image photographed at a time point closest to a photographing time point of the moving image output at a time point when the specific region is specified when a user specifies the specific region of the moving image screen while reproducing the moving image photographed in the simultaneous photographing mode, and magnifies and displays a region corresponding to the specific region on the recognized still image.

1 . A method of controlling an image taking apparatus to take a still image while taking a moving image, the method comprising:
 determining whether a specific region of a moving image screen is specified; and   searching for a still image of the specific region and displaying the still image on the screen, when the specific region is specified.   
     
     
         2 . The method according to  claim 1 , wherein the taking of the still image while taking the moving image includes periodically photographing the still image while photographing the moving image. 
     
     
         3 . The method according to  claim 2 , wherein the taking period of the still image while taking the moving image is manually adjusted. 
     
     
         4 . The method according to  claim 2 , wherein a time when the still image is taken while taking the moving image is recorded as tag information. 
     
     
         5 . The method according to  claim 2 , wherein, when the still image is taken while taking the moving image, a mark is put on a portion of moving image data streams corresponding to a time when the still image is taken, such that time information is recorded. 
     
     
         6 . The method according to  claim 2 , wherein the displayed still image is continuously changed to still images of the specific region taken thereafter. 
     
     
         7 . The method according to  claim 1 , wherein the specific region of the moving image screen is specified by dragging. 
     
     
         8 . The method according to  claim 7 , wherein the coordinate of a drag start point and the coordinate of a drag end point are recognized on the moving image screen so as to recognize the coordinate region of the specific region. 
     
     
         9 . The method according to  claim 1 , wherein the searching of the still image of the specific region includes searching for the still image taken at a time point closest to a taking time point of the moving image reproduced at a time point when the specific region is specified. 
     
     
         10 . The method according to  claim 9 , wherein, if still images are taken with the same time difference before and after the taking time point of the moving image reproduced at the time point when the specific region is specified, a still image selected by a predetermined pattern from the still images taken before and after the taking time point of the moving image reproduced at the time point when the specific region is specified is searched for. 
     
     
         11 . The method according to  claim 9 , wherein, if still images are taken with the same time difference before and after the taking time point of the moving image reproduced at the time point when the specific region is specified, a still image randomly selected from the still images taken before and after the moving image reproduced at the time point when the specific region is specified is taken is searched for. 
     
     
         12 . The method according to  claim 1 , wherein the searching of the still image of the specific region includes recognizing the coordinate region of the specific region in the moving image screen and searching for the coordinate region in the still image corresponding to the recognized coordinate region. 
     
     
         13 . The method according to  claim 1 , wherein the displaying of the searched still image includes magnifying and displaying the still image of the specific region with a ratio inversely proportional to the size of the specific region on the moving image screen. 
     
     
         14 . The method according to  claim 1 , wherein the displaying of the searched still image includes magnifying and displaying the still image of the specific region with any one of a plurality of selectable sizes. 
     
     
         15 . The method according to  claim 1 , wherein, when the searched still image is displayed, the displayed still image is dragged to be moved. 
     
     
         16 . The method according to  claim 1 , wherein, when the searched still image is displayed, a key input unit or a display panel is operated such that the displayed still image is captured. 
     
     
         17 . An image taking apparatus to take a still image while taking a moving image, the apparatus comprising:
 a display unit to output the moving image; and   a control unit to search for a still image of a specific region and display the still image on the display unit, when the specific region of a moving image screen is specified.   
     
     
         18 . The image taking apparatus according to  claim 17 , further comprising a first camera unit to take the moving image and a second camera unit to take the still image. 
     
     
         19 . The image taking apparatus according to  claim 18 , wherein the first camera unit includes a first lens to capture an external image, a first image sensor to convert the moving image input through the first lens into an electrical signal, and a first driver to drive the first image sensor. 
     
     
         20 . The image taking apparatus according to  claim 18 , wherein the second camera unit includes a second lens to capture an external image, a second image sensor to convert the still image input through the second lens into an electrical signal, and a second driver to drive the second image sensor. 
     
     
         21 . The image taking apparatus according to  claim 17 , further comprising a mode selection switch to select any one from a moving image taking mode to take the moving image, a still image taking mode to take the still image and a simultaneous taking mode to take both the moving image and the still image. 
     
     
         22 . The image taking apparatus according to  claim 17 , wherein the control unit checks the taking mode of the image taking apparatus and periodically photographs the still image while taking the moving image if the taking mode is the simultaneous taking mode. 
     
     
         23 . The image taking apparatus according to  claim 22 , wherein a time when the still image is taken while taking the moving image is recorded as tag information. 
     
     
         24 . The image taking apparatus according to  claim 22 , wherein the control unit puts a mark on a portion of moving image data streams corresponding to a time when the still image is taken while taking the moving image, such that time information is recorded. 
     
     
         25 . The image taking apparatus according to  claim 22 , wherein the control unit controls the display unit to continuously display the still image taken periodically. 
     
     
         26 . The image taking apparatus according to  claim 17 , wherein the control unit searches for a still image taken at a time point closest to a taking time point of the moving image reproduced at a time point when the specific region is specified. 
     
     
         27 . The image taking apparatus according to  claim 26 , wherein, if still images are taken with the same time difference before and after the taking time point of the moving image reproduced at the time point when the specific region is specified, a still image selected by a predetermined pattern from the still images taken before and after the taking time point of the moving image reproduced at the time point when the specific region is specified is searched for. 
     
     
         28 . The image taking apparatus according to  claim 26 , wherein, if still images are taken with the same time difference before and after the taking time point of the moving image reproduced at the time point when the specific region is specified, a still image, randomly selected from the still images taken before and after the taking time point of the moving image reproduced at the time point when the specific region is specified, is searched for. 
     
     
         29 . The image taking apparatus according to  claim 17 , wherein the control unit recognizes the coordinate region of the specific region in the moving image screen and searches for the coordinate region in the still image corresponding to the recognized coordinate region.