Transport stream generating device, transmitting device, receiving device, and a digital broadcast system having the same, and method thereof

A digital broadcast system, comprising:

• a transport stream (TS) generating apparatus which generates a transport stream (TS) by multiplexing a normal stream and a turbo stream having a variable coding rate;
• a transmitting apparatus which re-constructs the TS by processing the turbo stream, and transmits the re-constructed TS;
• and
• a receiving apparatus which receives the re-constructed TS, and decodes the normal stream and the turbo stream respectively, to recover normal data and turbo data,
• wherein the transmitting apparatus and the receiving apparatus performs signal processing of the turbo stream based on a predetermined packet unit, the predetermined packet unit being a multiple of 52 packets.

A digital broadcast system, comprising:

• a transport stream (TS) generating apparatus which generates a transport stream (TS) by multiplexing a normal stream and a turbo stream having a variable coding rate;
• a transmitting apparatus which re-constructs the TS by processing the turbo stream, and transmits the re-constructed TS;
• and
• a receiving apparatus which receives the re-constructed TS, and decodes the normal stream and the turbo stream respectively, to recover normal data and turbo data,
• wherein the transmitting apparatus comprises:
• a randomizer which receives the TS from the TS generating apparatus and randomizes the received TS;
• a turbo processor which re-constructs the TS by detecting the turbo stream from the randomized TS and encodes the detected turbo stream, outer-interleaves the encoded turbo stream, deinterleaves the interleaved encoded turbo stream, and inserts the deinterleaved result into the TS;
• a Reed-Solomon (RS) encoder which RS encodes the re-constructed TS;
• a data interleaver which interleaves the encoded TS;
• a trellis encoder which trellis encodes the interleaved TS;
• a multiplexer (MUX) which carries out multiplexing by adding a synchronous signal to the trellis-encoded TS;
• and
• a modulator which channel-modulates the multiplexed TS, up-converts the channel-modulated multiplexed TS into an RF channel band signal, and transmits the resultant signal.

A digital broadcast system, comprising:

• a transport stream (TS) generating apparatus which generates a transport stream (TS) by multiplexing a normal stream and a turbo stream having a variable coding rate;
• a transmitting apparatus which re-constructs the TS by processing the turbo stream, and transmits the re-constructed TS;
• and
• a receiving apparatus which receives the re-constructed TS, and decodes the normal stream and the turbo stream respectively, to recover normal data and turbo data,
• wherein the receiving apparatus comprises:
• a demodulator which receives the transmitted TS and demodulates the received signal;
• an equalizer which equalizes the demodulated TS;
• a first processor which processes the normal stream of the equalized TS to recover the normal data;
• and
• a second processor which performs decoding of the turbo stream of the equalized multi TS according to a coding rate of the turbo stream, to recover the turbo data.

A transport stream (TS) generating apparatus, comprising:

• a Reed-Solomon (RS) encoder which externally receives a turbo stream, and RS encodes the turbo stream;
• a duplicator which prepares a parity insertion region in the RS encoded turbo stream according to a variable coding rate;
• and
• a multiplexer (MUX) which externally receives a normal stream, and multiplexes the turbo stream processed at the duplicator along with the normal stream, to generate a transport stream (TS).

A transport stream (TS) generating apparatus, comprising:

• a Reed-Solomon (RS) encoder which externally receives a turbo stream, and RS encodes the turbo stream;
• a duplicator which prepares a parity insertion region in the RS encoded turbo stream according to a variable coding rate;
• a multiplexer (MUX) which externally receives a normal stream, and multiplexes the turbo stream processed at the duplicator along with the normal stream, to generate a transport stream (TS):
• a randomizer which randomizes the generated TS;
• a turbo processor which re-constructs the randomized TS by detecting the turbo stream from the randomized TS and encodes the detected turbo stream, outer-interleaves the encoded turbo stream, deinterleaves the interleaved encoded turbo stream, and inserts the deinterleaved result into the TS;
• and
• a derandomizer which derandomizes the TS processed at the turbo processor.

A transmitting apparatus, comprising:

• a randomizer which receives a transport stream (TS), including a mixture of a normal stream and a turbo stream having a variable coding rate, from a TS generating apparatus and randomizes the received TS;
• a turbo processor which re-constructs the TS by detecting the turbo stream from the randomized TS and encodes the detected turbo stream, outer-interleaves the encoded turbo stream, deinterleaves the encoded turbo stream, and inserts the deinterleaved result into the TS;
• a Reed-Solomon (RS) encoder which RS encodes the re-constructed TS;
• a data interleaver which interleaves the encoded TS;
• a trellis encoder which trellis encodes the interleaved TS;
• a multiplexer (MUX) which multiplexes the trellis encoded the TS by adding a synchronous signal to the trellis-encoded TS;
• and
• a modulator which channel-modulates the multiplexed TS, up-converts the channel-modulated multiplexed TS into RF channel band signal, and transmits the resultant signal.

A receiving apparatus, comprising:

• a demodulator which receives a transport stream (TS), including a normal stream and a turbo stream having a variable coding rate, and demodulates the received signal;
• an equalizer which equalizes the demodulated TS;
• a first processor which processes the normal stream of the equalized TS to recover normal data;
• and
• a second processor which performs decoding of the turbo stream of the equalized TS according to a coding rate of the turbo stream, to recover turbo data.

A receiving apparatus, comprising:

• a demodulator which receives a transport stream (TS), including a normal stream and a turbo stream having a variable coding rate, and demodulates the received signal;
• an equalizer which equalizes the demodulated TS;
• a first processor which processes the normal stream of the equalized TS to recover normal data;
• and
• a second processor which performs decoding of the turbo stream of the equalized TS according to a coding rate of the turbo stream, to recover turbo data,
• wherein the second processor comprises:
• a turbo decoder which performs turbo-decoding according to the coding rate of the turbo stream of the equalized TS;
• a second derandomizer which derandomizes the TS including the turbo-decoded turbo stream;
• and
• a turbo stream detector which detects the turbo stream from the derandomized TS, to recover the turbo data.

A digital broadcast method, comprising:

• generating a transport stream (TS) by multiplexing a normal stream and a turbo stream having a variable coding rate;
• re-constructing the TS by processing the turbo stream, and transmitting the re-constructed TS;
• and
• receiving the re-constructed TS, and decoding the normal stream and the turbo stream respectively, to recover normal data and turbo data.

A transport stream (TS) generating method, comprising:

• externally receiving a turbo stream, and Reed-Solomon (RS) encoding the turbo stream;
• preparing a parity insertion region in the RS encoded turbo stream according to a variable coding rate;
• and
• externally receiving a normal stream, and multiplexing the processed turbo stream along with the normal stream, to generate a transport stream (TS).

A transmitting method, comprising:

• receiving a transport stream (TS), including a mixture of a normal stream and a turbo stream having a variable coding rate, and randomizing the received TS;
• re-constructing the TS by detecting the turbo stream from the randomized TS and encoding the detected turbo stream, outer-interleaving the encoded turbo stream, deinterleaving the outer-interleaved encoded turbo stream, and inserting the deinterleaved result into the TS;
• Reed-Solomon (RS) encoding the re-constructed TS;
• interleaving the encoded TS;
• trellis encoding the interleaved TS;
• multiplexing the trellis encoded TS by adding a synchronous signal to the trellis-encoded TS;
• and
• channel-modulating the multiplexed TS, up-converting the channel-modulated multiplexed TS into RF channel band signal, and transmitting the resultant signal.

A receiving method, comprising:

• receiving a transport stream (TS), including a normal stream and a turbo stream having a variable coding rate, and demodulating the received signal;
• equalizing the demodulated TS;
• first processing the normal stream of the equalized TS to recover normal data;
• and
• second processing of the turbo stream of the equalized TS according to the variable coding rate of the turbo stream, to recover turbo data.

A digital broadcast system, comprising:

• a transport stream (TS) generating apparatus which generates a transport stream (TS) by multiplexing a normal stream and a turbo stream having a variable coding rate;
• a transmitting apparatus which re-constructs the TS by processing the turbo stream, and transmits the re-constructed TS;
• and
• a receiving apparatus which receives the re-constructed TS, and decodes the normal stream and the turbo stream respectively, to recover normal data and turbo data,
• wherein the TS generating apparatus comprises:
• a Reed-Solomon (RS) encoder which externally receives the turbo stream, and RS encodes the turbo stream;
• a duplicator which prepares a parity insertion region according to the variable coding rate, with respect to the RS-encoded turbo stream;
• and
• a multiplexer (MUX) which externally receives the normal stream, and multiplexes the turbo stream processed at the duplicator along with the normal stream, to generate the TS, and
• wherein the TS generating apparatus further comprises:
• a data interleaver, located between the Reed-Solomon (RS) encoder and the duplicator, interleaving the RS encoded turbo stream.