Video processing apparatus, content providing server, and control method thereof

A content providing server comprising:

• a communication unit which communicates with an external video processing apparatus;
• and
• a controller which controls the communication unit to select a supplementary video signal from among at least one supplementary video signal and to transmit the selected supplementary video signal to the external video processing apparatus in response to a request for the supplementary video signal for generating a 3D video signal corresponding to a 2D video signal from the external video processing apparatus.

A control method of a content providing server, the control method comprising:

• receiving a request from an external video processing apparatus to provide a supplementary video signal for generating a 3D video signal corresponding to a 2D video signal;
• and
• selecting, from among at least one supplementary video signal, the supplementary video signal corresponding to the received request and transmitting the selected supplementary video signal to the external video processing apparatus.

A video processing system comprising:

• a video processing apparatus which receives a two-dimensional (2D) video signal, transmits a request for a supplementary video signal used to generate a three-dimensional (3D) video signal corresponding to the received 2D video signal, and, if the supplementary video signal is received in response to the transmitted request, generates the 3D video signal based on the received supplementary video signal and the received 2D video signal;
• and
• a content providing server which receives the request from the video processing apparatus, determines, according to the received request, whether the supplementary video signal corresponding to the 2D video signal exists among at least one supplementary video signal, and, if the supplementary video signal corresponding to the 2D video signal exists, transmits the supplementary video signal to the video processing apparatus.