E8-VSB reception system, apparatus for generating data attribute and method thereof, and apparatus for channel encoding and method thereof

A data attribute generating apparatus of an E8-VSB reception system, which restores enhanced mode map information and generates E8-VSB data attribute information for channel equalization and decoding by receiving ½ enhanced data encoded at a ½ coding rate, ¼ enhanced data encoded at a ¼ coding rate, and main data multiplexed and transmitted from an E8-VSB transmission system, the data attribute generating apparatus comprising:

• an enhanced packet attribute generating unit deciding whether an enhanced packet is a ½ enhanced packet or a ¼ enhanced packet using the enhanced mode map information, the enhanced packet attribute generating unit generating attribute information indicating a corresponding decision result by a packet unit;
• an enhanced byte attribute generating unit generating attribute information indicating whether each byte of the enhanced packet is expanded according to ½ enhanced rule or ¼ enhanced rule using the attribute information of the enhanced packet attribute generating unit by a byte unit;
• an M/E packet attribute generating unit generating attribute information indicating whether a packet configured after data de-interleaving is a main packet or an enhanced packet by the packet unit using the attribute information of the enhanced byte attribute generating unit and the enhanced mode map information, the M/E packet attribute generating unit generating attribute information corresponding to each byte of one packet by the byte unit;
• and
• an E8-VSB symbol attribute generating unit generating attribute information indicating an attribute of each symbol by a symbol unit using the attribute information corresponding to each byte of one packet of the M/E packet attribute generating unit.

A channel decoding apparatus of an E8-VSB reception system, which performs decoding, channel equalization and channel decoding by receiving ½ enhanced data encoded at a ½ coding rate, ¼ enhanced data encoded at a ¼ coding rate, and main data multiplexed and transmitted from an E8-VSB transmission system, the channel decoding apparatus comprising:

• a data attribute generating unit generating to output main/enhanced (M/E) packet attribute information, enhanced byte attribute information, enhanced packet attribute information and E8-VSB symbol attribute information by restoring enhanced mode map information including multiplexing information of the main data, the ½ enhanced data and the ¼ enhanced data from the demodulated or channel-equalized signal;
• a main data decoding unit performing Viterbi decoding, symbol-byte conversion and de-interleaving on an E8-VSB symbol equalized in the channel equalizing unit according to the E8-VSB symbol attribute information, the main data decoding unit sequentially performing RS decoding and de-randomizing on the de-interleaved data according to the M/E packet attribute information to output an MPEG packet;
• a data reconfiguring unit reconfiguring to output an enhanced byte with significant bits only in each byte by removing a main packet from the packet de-randomized and outputted from the main data decoding unit according to the M/E packet attribute information and the enhanced byte attribute information and by removing an MPEG header from an enhanced packet;
• and
• an enhanced data output unit sequentially performing de-interleaving and RS decoding on the reconfigured enhanced packet, the enhanced data output unit separating the RS-decoding packet into a ½ enhanced packet and a ¼ enhanced packet according to the enhanced packet attribute information, the enhanced data output unit converting separated 164-byte packets to 188-byte MPEG packets to output by matching synchronization.

A channel decoding apparatus of an E8-VSB reception system, which performs decoding, channel equalization and channel decoding by receiving ½ enhanced data encoded at a ½ coding rate, ¼ enhanced data encoded at a ¼ coding rate, and main data multiplexed and transmitted from an E8-VSB transmission system, the channel decoding apparatus comprising:

• a data attribute generating unit generating to output main/enhanced (M/E) packet attribute information, enhanced byte attribute information, enhanced packet attribute information and E8-VSB symbol attribute information by restoring enhanced mode map information including multiplexing information of the main data, the M enhanced data and the ¼ enhanced data from the demodulated or channel-equalized signal;
• a main data decoding unit sequentially performing Viterbi decoding, symbol-byte conversion, de-interleaving, RS decoding and de-randomizing on the channel-equalized E8-VSB symbol to output an MPEG packet;
• an enhanced data processing unit sequentially performing Viterbi decoding, symbol-byte conversion, de-interleaving, RS parity removal and de-randomizing on the channel-equalized E8-VSB symbol to output according to the E8-VSB symbol attribute information;
• a data reconfiguring unit reconfiguring to output an enhanced byte with significant bits only in each byte within an enhanced packet by removing a main packet from the packet de-randomized and outputted from the enhanced data processing unit according to the M/E packet attribute information and by removing an MPEG header from the enhanced packet according to the enhanced byte attribute information;
• and
• an enhanced data output unit sequentially performing de-interleaving and RS decoding on the reconfigured enhanced packet, the enhanced data output unit separating the RS-decoding packet into a ½ enhanced packet and a ¼ enhanced packet according to the enhanced packet attribute information, the enhanced data output unit converting separated 164-byte packets to 188-byte MPEG packets to output by matching synchronization.

A channel decoding apparatus of an E8-VSB reception system, which performs decoding, channel equalization and channel decoding by receiving ½ enhanced data encoded at a ½ coding rate, ¼ enhanced data encoded at a ¼ coding rate, and main data multiplexed and transmitted from an E8-VSB transmission system, the channel decoding apparatus comprising:

• a data attribute generating unit generating to output main/enhanced (M/E) packet attribute information, enhanced byte attribute information, enhanced packet attribute information and E8-VSB symbol attribute information by restoring enhanced mode map information including multiplexing information of the main data, the ½ enhanced data and the ¼ enhanced data from the demodulated or channel-equalized signal;
• a main data decoding unit sequentially performing Viterbi decoding, symbol-byte conversion, de-interleaving, RS decoding and de-randomizing on an E8-VSB symbol equalized in the channel equalizing unit to output an MPEG packet according to the E8-VSB symbol attribute information;
• a data reconfiguring unit reconfiguring to output an enhanced byte with significant bits only in each byte by removing an RS parity from the de-interleaved packet outputted from the main data decoding unit, by removing a main packet from the de-randomized packet according to the M/E packet attribute information and the enhanced byte attribute information, and by removing an MPEG header from an enhanced packet;
• and
• an enhanced data output unit sequentially performing de-interleaving and RS decoding on the reconfigured enhanced packet, the enhanced data output unit separating the RS-decoding packet into a ½ enhanced packet and a ¼ enhanced packet according to the enhanced packet attribute information, the enhanced data output unit converting separated 164-byte packets to 188-byte MPEG packets to output by matching synchronization.

A method of generating data attributes in an E8-VSB reception system, which performs decoding, channel equalization and channel decoding by receiving ½ enhanced data encoded at a ½ coding rate, ¼ enhanced data encoded at a ¼ coding rate, and main data multiplexed and transmitted from an E8-VSB transmission system, the method comprising:

• a step (a) of restoring enhanced mode map information including multiplexing information of the main data, ½ enhanced data and ¼ enhanced data from the modulated or channel-equalized signal;
• a step (b) of deciding whether an enhanced packet is a ½ enhanced packet or a ¼ enhanced packet using the enhanced mode map information and generating attribute information indicating a corresponding decision result by a packet unit;
• a step (c) of generating attribute information indicating whether each byte of the enhanced packet is expanded according to ½ enhanced rule or ¼ enhanced rule using the attribute information of the enhanced packet attribute generating unit by a byte unit;
• a step (d) of generating attribute information indicating whether a packet configured after data de-interleaving is a main packet or an enhanced packet by the packet unit using the attribute information of the enhanced byte attribute generating unit and the enhanced mode map information and generating attribute information corresponding to each byte of one packet by the byte unit;
• and
• a step (e) of generating attribute information indicating an attribute of each symbol by a symbol unit using the attribute information corresponding to each byte of one packet of the M/E packet attribute generating unit.

A channel decoding method in an E8-VSB reception system, which performs decoding, channel equalization and channel decoding by receiving ½ enhanced data encoded at a ½ coding rate, ¼ enhanced data encoded at a ¼ coding rate, and main data multiplexed and transmitted from an E8-VSB transmission system, the channel decoding method comprising:

• a step (a) of restoring enhanced mode map information including multiplexing information of the main data, ½ enhanced data and ¼ enhanced data from the modulated or channel-equalized signal;
• a step (b) of generating to output main/enhanced (M/E) packet attribute information, enhanced byte attribute information, enhanced packet attribute information and E8-VSB symbol attribute information using the enhanced mode map information;
• a step (c) of performing Viterbi decoding, symbol-byte conversion and de-interleaving on an E8-VSB symbol equalized in the channel equalizing unit according to the E8-VSB symbol attribute information and performing RS decoding and de-randomizing on the de-interleaved data according to the M/E packet attribute information to output an MPEG packet;
• a step (d) of reconfiguring to output an enhanced byte with significant bits only in each byte by removing a main packet from the packet de-randomized and outputted from the main data decoding unit according to the M/E packet attribute information and the enhanced byte attribute information and by removing an MPEG header from an enhanced packet;
• and
• a step (e) of sequentially performing de-interleaving and RS decoding on the reconfigured enhanced packet, separating the RS-decoding packet into a ½ enhanced packet and a ¼ enhanced packet according to the enhanced packet attribute information, and converting separated 164-byte packets to 188-byte MPEG packets to output by matching synchronization.

A channel decoding method in an E8-VSB reception system, which performs decoding, channel equalization and channel decoding by receiving ½ enhanced data encoded at a ½ coding rate, ¼ enhanced data encoded at a ¼ coding rate, and main data multiplexed and transmitted from an E8-VSB transmission system, the channel decoding method comprising:

• a step (a) of restoring enhanced mode map information including multiplexing information of the main data, ½ enhanced data and ¼ enhanced data from the modulated or channel-equalized signal;
• a step (b) of generating to output main/enhanced (M/E) packet attribute information, enhanced byte attribute information, enhanced packet attribute information and E8-VSB symbol attribute information using the enhanced mode map information;
• a step (c) of sequentially performing Viterbi decoding, symbol-byte conversion, de-interleaving, RS decoding and de-randomizing on the channel-equalized E8-VSB symbol to output an MPEG packet;
• a step (d) of sequentially performing Viterbi decoding, symbol-byte conversion, de-interleaving, RS parity removal and de-randomizing on the channel-equalized E8-VSB symbol to output according to the E8-VSB symbol attribute information;
• a step (e) of reconfiguring to output an enhanced byte with significant bits only in each byte within an enhanced packet by removing a main packet from the packet de-randomized and outputted from the enhanced data processing unit according to the M/E packet attribute information and by removing an MPEG header from the enhanced packet according to the enhanced byte attribute information;
• and
• a step (f) of sequentially performing de-interleaving and RS decoding on the reconfigured enhanced packet, separating the RS-decoding packet into a ½ enhanced packet and a ¼ enhanced packet according to the enhanced packet attribute information, and converting separated 164-byte packets to 188-byte MPEG packets to output by matching synchronization.

A channel decoding method in an E8-VSB reception system, which performs decoding, channel equalization and channel decoding by receiving ½ enhanced data encoded at a ½ coding rate, ¼ enhanced data encoded at a ¼ coding rate, and main data multiplexed and transmitted from an E8-VSB transmission system, the channel decoding method comprising:

• a step (a) of restoring enhanced mode map information including multiplexing information of the main data, ½ enhanced data and ¼ enhanced data from the modulated or channel-equalized signal;
• a step (b) of generating to output main/enhanced (M/E) packet attribute information, enhanced byte attribute information, enhanced packet attribute information and E8-VSB symbol attribute information using the enhanced mode map information;
• a step (c) of sequentially performing Viterbi decoding, symbol-byte conversion, de-interleaving, RS decoding and de-randomizing on an E8-VSB symbol equalized in the channel equalizing unit to output an MPEG packet according to the E8-VSB symbol attribute information;
• a step (d) of reconfiguring to output an enhanced byte with significant bits only in each byte by removing an RS parity from the de-interleaved and outputted packet, by removing a main packet from the de-randomized packet according to the M/E packet attribute information and the enhanced byte attribute information, and by removing an MPEG header from an enhanced packet;
• and
• a step (e) of sequentially performing de-interleaving and RS decoding on the reconfigured enhanced packet, separating the RS-decoding packet into a ½ enhanced packet and a ¼ enhanced packet according to the enhanced packet attribute information, and converting separated 164-byte packets to 188-byte MPEG packets to output by matching synchronization.