Abstract: A portable terminal equipped with a projector and a method for displaying data using the portable terminal provides capabilities for both conferencing and video presentations. When a projection function is selected in the portable terminal while the portable terminal is making a video call with other portable terminal, presentation data that will be output via the projector is transmitted to another portable terminal. The presentation data and image data transmitted from the other portable terminal is output via the projector of the portable terminal.

Abstract: Provided is a method for transmitting a file during a video call including steps of confirming a first bandwidth for file transmission when a file transmission event is generated during a video call; reducing video call data on the basis of the first bandwidth for file transmission; and transmitting the reduced video call data and the corresponding file data through a second bandwidth for the video call, with the first bandwidth being a partial area or an entire area of the second bandwidth.

Abstract: Provided is a method for transmitting a file during a video call including steps of confirming a first bandwidth for file transmission when a file transmission event is generated during a video call; reducing video call data on the basis of the first bandwidth for file transmission; and transmitting the reduced video call data and the corresponding file data through a second bandwidth for the video call, with the first bandwidth being a partial area or an entire area of the second bandwidth.

Abstract: A method and an apparatus perform a video call service. A transmission communication device provides information on a rotation angle of a video call image transmitted during a video call to a reception communication device corresponding to a counterpart of the video call. Then, the reception communication device renders the received video call image by using the information on the rotation angle of the received video call image, and displays a rendered video call image. Accordingly, an image of a counterpart of the video call can be normally provided during the video call.

Abstract: A portable terminal equipped with a projector and a method for displaying data using the portable terminal provides capabilities for both conferencing and video presentations. When a projection function is selected in the portable terminal while the portable terminal is making a video call with other portable terminal, presentation data that will be output via the projector is transmitted to another portable terminal. The presentation data and image data transmitted from the other portable terminal is output via the projector of the portable terminal.

Abstract: A portable terminal equipped with a projector and a method for displaying data using the portable terminal provides capabilities for both conferencing and video presentations. When a projection function is selected in the portable terminal while the portable terminal is making a video call with other portable terminal, presentation data that will be output via the projector is transmitted to another portable terminal. The presentation data and image data transmitted from the other portable terminal is output via the projector of the portable terminal.

Abstract: A portable terminal equipped with a projector and a method for displaying data using the portable terminal provides capabilities for both conferencing and video presentations. When a projection function is selected in the portable terminal while the portable terminal is making a video call with other portable terminal, presentation data that will be output via the projector is transmitted to another portable terminal. The presentation data and image data transmitted from the other portable terminal is output via the projector of the portable terminal.