Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

A method of processing a broadcast signal at an electronic device comprising:

• obtaining one or more signal frames, that carry service data, from the broadcast signal;
• deinterleaving one or more blocks of the service data based on first deinterleaving operation, each block carrying a number of FEC (Forward Error Correction) blocks that varies from a minimum value of 1 to a maximum value;
• deinterleaving data cells in one or more FEC blocks in the each block based on second deinterleaving operation that is distinct from the first deinterleaving operation,
• by randomly writing the data cells to a memory based on sequences, each sequence varying at each FEC block of the service data;
• and
• decoding data corresponding to the data cells linearly read out from the memory.

A device for processing a broadcast signal, the device comprising:

• a receiving processor for receiving the broadcast signal;
• a processor for obtaining one or more signal frames, that carry service data, from the broadcast signal, and deinterleaving one or more blocks of the service data based on first deinterleaving operation, wherein each block carries a number of FEC (Forward Error Correction) blocks that varies from a minimum value of 1 to a maximum value,
• the processor for deinterleaving data cells in one or more FEC blocks based on second deinterleaving operation that is distinct from the first deinterleaving operation, by randomly writing the data cells to a memory based on sequences, wherein each sequence varies at each FEC block of the service data, and
• the processor for decoding data corresponding to the data cells linearly read out from the memory.

A device for processing a broadcast signal, the device comprising:

• a tuner to receive the broadcast signal,
• a parser to parse one or more signal frames, that carry service data, from the broadcast signal,
• a deinterleaver to deinterleave one or more blocks of the service data based on first deinterleaving operation, each block carrying a number of FEC (Forward Error Correction) blocks that varies from a minimum value of 1 to a maximum value, and
• means for deinterleaving data cells in one or more FEC blocks based on second deinterleaving operation by randomly writing the data cells to a memory based on sequences, each sequence varying at each FEC block of the service data.

A device for processing a broadcast signal, the device comprising:

• a tuner to receive the broadcast signal,
• a parser to parse one or more signal frames, that carry service data, from the broadcast signal,
• a deinterleaver to deinterleave one or more blocks of the service data based on first deinterleaving operation, each block carrying a number of FEC (Forward Error Correction) blocks that varies from a minimum value of 1 to a maximum value, and
• an address generator for generating sequences, each sequence varying at each FEC block of the service data, the generated sequences for randomly writing data cells to a memory based on the sequences for performing second deinterleaving operation.