摘要:
A television transmitting system includes an encoder, a data randomizing and expanding unit, a group formatter, a deinterleaver, and a packet formatter. The encoder codes enhanced data for error correction, permutes the coded data, and further codes the permuted data for error detection. The randomizing and expanding unit randomizes the error-detection-coded data and expands the randomized data. The group formatter forms a group of enhanced data having one or more data regions and inserts the expanded enhanced data into at least one of the regions. The deinterleaver deinterleaves the group of enhanced data, and the packet formatter generates enhanced data packets.
摘要:
A broadcasting signal receiver and a method for transmitting/receiving a broadcasting signal are disclosed. An identifier of a cell is configured in second program table information or signaling information of the broadcasting signal. If the cell is changed, channel information of the changed cell can be obtained from second program table information in which transmission channel information of each cell for a broadcasting program is configured. Accordingly, the broadcasting signal receiver can continuously output the program although the cell is changed.
摘要:
A digital broadcast receiver is presented. The digital broadcast receiver includes a tuner for receiving a DTV signal, a known data detector for detecting position information of the known data sequences from the DTV signal, an equalizer for compensating a channel distortion of the DTV signal according to at least one of the detected position information of the known data sequences, a first decoder for turbo-decoding, via a block unit, mobile service data in the channel distortion compensated DTV signal, and a second decoder for generating a Reed-Solomon (RS) frame including the turbo-decoded mobile service data and for correcting at least one error of the generated RS frame by performing cyclic redundancy check (CRC) decoding and RS decoding on the generated RS frame.
摘要:
A digital broadcast transmitting/receiving system and a method for processing data are disclosed. The method for processing data may enhance the receiving performance of the receiving system by performing additional coding and multiplexing processes on the traffic information data and transmitting the processed data. Thus, robustness is provided to the traffic information data, thereby enabling the data to respond strongly against the channel environment which is always under constant and vast change.
摘要:
A digital television (DTV) receiving system includes a known data detector, and a channel impulse response (CIR) estimator, a CIR calculator, a coefficient calculator, and a multiplier. The known data detector detects positions of known data and field sync data included in a data group. The CIR estimator estimates CIRs of the data included in the data group using the detected positions of the field sync data and the known data. The CIR calculator performs interpolation or extrapolation based on a characteristic of each data region included in the data group. The coefficient calculator calculates equalization coefficients using the estimated CIRs, and the multiplier multiplies the data in the data group with the coefficients.
摘要:
A digital television transmitting system includes a pre-processor, a packet generator, an RS encoder, and a trellis encoder. The pre-processor pre-processes enhanced data by coding the enhanced data for first forward error correction (FEC) and expanding the FEC-coded enhanced data. The packet generator generates first and second enhanced data packets including the pre-processed enhanced data and main data packets and multiplexes the enhanced and main data packets. The first enhanced data packet includes an adaptation field including the pre-processed enhanced data and second enhanced data packet includes a payload region including the pre-processed enhanced data. The RS encoder performs RS encoding on the multiplexed data packets for second forward error correction (FEC), and the trellis encoder performs trellis encoding on the RS-coded data packets.
摘要:
A digital broadcast transmitter and a method of processing a DTV signal in the digital broadcast transmitter are disclosed. The digital broadcast transmitter includes a pre-processor, a first multiplexer, a post-processor, and a second multiplexer. The pre-processor includes a first interleaver, a group formatter, and a packer formatter. The first interleaver interleaves symbols corresponding to mobile service data. The group formatter maps data corresponding to the interleaved symbols into at least one region of a data group and adds place holders for main service data and non-systematic RS parity data to the data group. The packet formatter removes the place holders for the main service data and the non-systematic RS parity data, and generates mobile service data packets having data in the data group in which the place holders for the main service data and the non-systematic RS parity data are removed.
摘要:
A digital television transmitting system includes a pre-processor, a packet generator, an RS encoder, and a trellis encoder. The pre-processor pre-processes enhanced data by coding the enhanced data for first forward error correction and expanding the FEC-coded enhanced data. The packet generator generates enhanced data packets including the pre-processed enhanced data and main data packets and multiplexes the enhanced and main data packets. Each enhanced data packet includes an adaptation field in which the pre-processed enhanced data are inserted. The RS encoder performs RS encoding on the multiplexed data packets for second forward error correction, and the trellis encoder performs trellis encoding on the RS-coded data packets.
摘要:
A digital broadcast transmitting/receiving system and a method for processing data are disclosed. The method for processing data may enhance the receiving performance of the receiving system by performing additional coding and multiplexing processes on the traffic information data and transmitting the processed data. Thus, robustness is provided to the traffic information data, thereby enabling the data to respond strongly against the channel environment which is always under constant and vast change.
摘要:
A digital broadcasting system for transmitting/receiving a digital broadcasting signal and a data processing method are disclosed. A program table information has an identifier identifying mobile service data and main service data in a broadcasting signal. The program table information is mulitiplexed with the mobile service data and main service data. Then, broadcast receiving system can receive and output the mobile service data by parsing the program table information and using the identifier.