Patent ID: 8041193
Filing Date: 2011-10-18
Classification: G11B,H04N

Abstract:
1. An optical disc having a data structure for managing reproduction of text subtitle data, the optical disc comprising: a navigation area storing at least one subplayitem, the subplayitem identifying at least one clip information file associated with at least one text subtitle data file including the text subtitle data recorded on the optical disc, the text subtitle data in the text subtitle data file being associated with at least a portion of main presentation data in a main file recorded on the optical disc, wherein each clip information file identified by the subplayitem is separated from each text subtitle file and has a one to one correspondence with a respective subtitle data file, wherein the subplayitem specifies a presentation interval for associated text subtitle data and the subplayitem includes fields indicating data coding information and a system time identifier for the associated text subtitle data, wherein a graphic-subtitle data is multiplexed with the main presentation data in the main file whereas the text subtitle data is included in the text subtitle data file separated from the main file, and either the text subtitle data or the graphic-subtitle data is displayed together with the main presentation data.