Patent ID: 8515242

Claim:
A method of retrieving information for managing video data, comprising: receiving, by a receiving unit, a data stream including video data; storing, in a buffer memory, the video data; retrieving, by a controlling unit, linking information for associating a metadata set with the video data; retrieving, by the controlling unit, a metadata indicator for indicating whether the metadata set exists in a stream including the linking information, the metadata set being additional information describing the video data, and the linking information being used for identifying the metadata set associated with the video data, wherein the metadata indicator is a flag, wherein the metadata indicator indicates that the metadata set associated with the video data exists in the stream when the metadata indicator has a first metadata indicator value, and wherein the metadata indicator indicates that the metadata set associated with the video data does not exist in the stream when the metadata indicator has a second metadata indicator value; decoding, by a decoding unit, the video data; and outputting, by a display, the video data and the additional information.