Patent ID: 7995900

Claim:
A method of reproducing auxiliary contents data in a recording medium player, the method comprising: receiving, by the recording medium player and from an external server, playback control information for the auxiliary contents data, the auxiliary contents data related to audio/video (A/V) recorded on a recording medium, the playback control information including address information for indicating a location of the auxiliary contents data, and attribute information, the attribute information including separate values for indicating an image type and an aspect ratio of the auxiliary contents data, the image type being one of “square” and “non-square” and the aspect ratio being one of 4:3 and 16:9; storing, by the recording medium player, the playback control information in one region among at least two logically divided regions of a buffer memory; checking, by the recording medium player, the attribute information stored in the one region of the buffer memory to determine a presentation method for the auxiliary contents data; and presenting, by the recording medium player, the auxiliary contents data according to the determined presentation method, wherein the step of presenting includes outputting the auxiliary contents data in conjunction with the A/V data reproduced from the recording medium using the image type and the aspect ratio included in the playback control information.