Digital broadcast transmitter, digital broadcast receiver, and methods for configuring and processing streams thereof

A method for processing a transport stream of a digital broadcast receiver, the method comprising:

• receiving the transport stream which is divided into a first area in which first mobile data is placed and a second area in which second mobile data is variably placed according to mode;
• equalizing the demodulated transport stream;
• and
• decoding at least one of the first mobile data and the second mobile data from the equalized transport stream,
• wherein the transport stream is generated by placing the second mobile data and a normal data in the second data area when the mode is a first frame mode, and by placing the second mobile data in the entire second data area when the mode is a second frame mode.

A digital broadcast receiver, comprising:

• a receiver which receives a transport stream which is divided into a first area in which first mobile data is placed and a second area in which second mobile data is variably placed according to mode;
• a demodulator which demodulates the transport stream;
• an equalizer which equalizes the demodulated transport stream;
• and
• a decoding unit which decodes at least one of the first mobile data and the second mobile data from the equalized transport stream,
• wherein the transport stream is generated by placing the second mobile data and a normal data in the second data area when the mode is a first frame mode, and by placing the second mobile data in the entire second data area when the mode is a second frame mode.