Method for providing media-content related information, device, server, and computer-readable storage medium for executing the method

A non-transitory computer-readable storage medium having embodied thereon a computer program for executing a method for providing media content-related information by using a device capable of accessing a server via a network, the method comprising:

• reproducing media content by the device;
• generating identification information of the media content being reproduced by the device;
• transmitting the identification information from the device to the server;
• receiving, at the device, key information or both the key information and media content-related information, from the server, based on the identification information, wherein the key information is based on closed caption information synchronized with the media content and the media content-related information is determined using the key information;
• and
• when the key information is received from the server, determining, at the device, the media content-related information from the key information, and outputting, using the device, the media-content information determined at the device;
• when both the key information and the media content-related information are received from the server, outputting, using the device, the media content-related information received from the server.

A device, comprising:

• a media content-receiving unit for receiving media content;
• a reproducing unit for reproducing the received media content;
• a network interface unit for interfacing with a network;
• and
• a processor controls the media content-receiving unit, the reproducing unit, and the network interface to:
• reproduce the media content by the reproducing unit,
• generate identification information of the media content that are currently being reproduced by using the reproducing unit,
• transmit the generated identification information to a server via the network interface unit,
• receive key information or both the key information and media content-related information, from the server,
• when the key information is received from the server, determine the media content-related information from the key information, and output the media-content information determined at the device by using the reproducing unit;
• when both the key information and the media content-related information are received from the server, output the media content-related information received from the server by using the reproducing unit;
• wherein the key information is based on closed caption information synchronized with the media content and the media content-related information is determined using the key information.