Broadcast signal transmitting apparatus, broadcast signal receiving apparatus, method for transmitting broadcast signal, and method for receiving broadcast signal

1. An apparatus for receiving a broadcast signal, the apparatus comprising:

a tuner configured to receive a broadcast signal;

a time deinterleaver configured to time deinterleave a Time Interleaving (TI) block in the broadcast signal, the TI block including one or more Forward Error Correction (FEC) blocks interleaved by a TI scheme, the TI scheme including column-writing one or more FEC blocks in a memory and diagonal-reading the one or more FEC block based on the TI block by skipping one or more virtual FEC blocks that are ahead of the one or more FEC blocks in the TI block;

a decoder configured to decode the broadcast signal, the decoded broadcast signal including a signal frame including first symbols including first information for representing whether or not emergency information is included in the signal frame,

a second symbol for physical layer parameters following the first symbols, the second symbol including second information for representing whether or not fast channel scan information for the broadcast signal is included in the signal frame, and

third symbols, that follows the second symbol, including one or more components included in a content of a service and component information including role information for at least one of an audio component, a video component or a closed caption component of the one or more components,

the role information for the video component including at least one of a sign language insert or an alternative view; and

a displayer configured to display information related to the content based on the role information of the one or more components of the content in the decoded broadcast signal.

2. The apparatus of claim 1 , wherein the displayer receives a user input signal including reservation information for a content.

3. The apparatus of claim 2 , wherein the displayer displays information representing that a content is presentable at a reservation time based on the role information related to the sign language insert.

4. The apparatus of claim 1 , wherein the displayer displays a content related to the role information for the alternative view in response to a user input signal related to pay per view for the alternative view.

5. A method for receiving a broadcast signal, the apparatus comprising:

receiving a broadcast signal;

time deinterleaving a Time Interleaving (TI) block in the broadcast signal, the TI block including one or more Forward Error Correction (FEC) blocks interleaved by a TI scheme, the TI scheme including column-writing one or more FEC blocks in a memory and diagonal-reading the one or more FEC block based on the TI block by skipping one or more virtual FEC blocks that are ahead of the one or more FEC blocks in the TI block;

decoding the broadcast signal, the decoded broadcast signal including a signal frame including first symbols including first information for representing whether or not emergency information is included in the signal frame,

a second symbol for physical layer parameters following the first symbols, the second symbol including second information for representing whether or not fast channel scan information for the broadcast signal is included in the signal frame, and

third symbols, that follows the second symbol, including one or more components included in a content of a service and component information including role information for at least one of an audio component, a video component or a closed caption component of the one or more components,

the role information for the video component including at least one of a sign language insert or an alternative view; and

displaying information related to the content based on the role information of the one or more components of the content in the decoded broadcast signal.

6. The method of claim 5 , the method further comprising:

receiving a user input signal including reservation information for a content.

7. The method of claim 6 , the method further comprising:

displaying information representing that a content is presentable at a reservation time based on the role information related to the sign language insert.

8. The method of claim 5 , the method further comprising:

displaying a content related to the role information for the alternative view in response to a user input signal related to pay per view for the alternative view.

9. An apparatus for transmitting a broadcast signal, the apparatus comprising:

an encoder configured to encode one or more components included in a content of a service and component information including role information for at least one of an audio component, a video component or a closed caption component of the one or more components;

a time interleaver configured to time interleave the one or more components and the component information based on a Time Interleaving (TI) block including one or more Forward Error Correction (FEC) blocks interleaved by column-writing one or more FEC blocks in a memory and diagonal-reading the one or more FEC block based on the TI block by skipping one or more virtual FEC blocks that are ahead of the one or more FEC blocks in the TI block;

a modulator configured to modulate a signal frame including first symbols including first information for representing whether or not emergency information is included in the signal frame,

a second symbol for physical layer parameters following the first symbols, the second symbol including second information for representing whether or not fast channel scan information for the broadcast signal is included in the signal frame, and

third symbols, that follows the second symbol, including the one or more components and the component information,

the role information for the video component including at least one of a sign language insert or an alternative view; and

a transmitter configured to transmit the broadcast signal including the signal frame.

10. A method for transmitting a broadcast signal, the method comprising:

encoding one or more components included in a content of a service and component information including role information for at least one of an audio component, a video component or a closed caption component of the one or more components;

time interleaving the one or more components and the component information based on a Time Interleaving (TI) block including one or more Forward Error Correction (FEC) blocks interleaved by column-writing one or more FEC blocks in a memory and diagonal-reading the one or more FEC block based on the TI block by skipping one or more virtual FEC blocks that are ahead of the one or more FEC blocks in the TI block;

modulating a signal frame including first symbols including first information for representing whether or not emergency information is included in the signal frame,

a second symbol for physical layer parameters following the first symbols, the second symbol including second information for representing whether or not fast channel scan information for the broadcast signal is included in the signal frame, and

third symbols, that follows the second symbol, including the one or more components and the component information,

the role information for the video component including at least one of a sign language insert or an alternative view; and

transmitting the broadcast signal including the signal frame.