| 摘要 |
In accordance with various aspects of the invention, there is being provided a method and apparatus for transmitting, and a method and apparatus for receiving a digital broadcast signal comprising a hierarchical modulation having a high priority stream and a low priority stream. The content to be received or transmitted in encoded into two stream so that a first stream is configured to be transmitted or received with the high priority stream, and a second stream to be transmitted/received with the low priority stream is configured to contain additional information for increasing the bitrate of the first stream. |
