Patent ID: 8300054

Claim:
A method, performed by a computer, for reproducing an audio/video data and an enhanced content data, the method comprising: receiving an enhanced content data from a recording medium or content server, the enhanced content data including a multimedia network graphic (MNG) file in chunk data format, wherein said MNG file comprises a header portion including a frame information for restricting a frame size and a frame rate, an end portion indicating the end of the MNG file, and a PNG (Portable Network Graphics) file positioned between said header portion and said end portion, and wherein said PNG file including an image header, an actual image data and an image trailer, the actual image data being associated with the audio/video data, the image header including a display information associated with a width and height of a display screen, and the image trailer indicating the end of the PNG file; and reproducing the audio/video data recorded in the recording medium and said image data recorded in the recording medium or received from the content server.