| 摘要 |
A method for providing access to operation information relating to a digital television signal, the operation information comprising at least one of, a location and type of access unit, timing information, and rendering information. The method comprising, receiving an encoded digital television signal, encoded in accordance with a layered encoding scheme, in a plurality of layers comprising a first layer comprising an elementary video stream and a second layer comprising a transport stream; duplicating operation information from the first layer of encoding within the digital television signal; and recording a copy of the duplicated operation information in a data section in the second layer of encoding within the digital television signal. The duplicated operation information is placed in the second layer when the duplicated operation information changes relative to an earlier version of the duplicated operation information. |
