DTV receiving system and method of processing DTV signal
First Claim
1. A method of processing broadcast data in a broadcast receiver, the method comprising:
- receiving a broadcast signal being generated byfirst encoding service data to add parity data,second encoding the first-encoded service data at a code rate,first interleaving the second encoded service data,second interleaving the first interleaved service data,encoding signaling data for signaling the service data,interleaving a part of the encoded signaling data, wherein positions of data in a fore part of the encoded signaling data are maintained and positions of data in a rear part of the encoded signaling data are changed, andbuilding a frame including a first region and a second region, wherein the first region of the frame begins with a synchronization symbol and the second region of the frame includes the second-interleaved service data;
demodulating data of the frame in the received broadcast signal;
decoding the encoded signaling data in the demodulated data; and
decoding the second encoded service data in the demodulated data.
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Abstract
A digital television (DTV) receiving system includes an information detector, a resampler, a timing recovery unit, and a carrier recovery unit. The information detector detects a known data sequence which is periodically inserted in a digital television (DTV) signal received from a DTV transmitting system. The resampler resamples the DTV signal at a predetermined resampling rate. The timing recovery unit performs timing recovery on the DTV signal by detecting a timing error from the resampled DTV signal using the detected known data sequence. The carrier recovery unit performs carrier recovery on the resampled DTV signal by estimating a frequency offset value of the resampled DTV signal using the detected known data sequence.
433 Citations
12 Claims
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1. A method of processing broadcast data in a broadcast receiver, the method comprising:
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receiving a broadcast signal being generated by first encoding service data to add parity data, second encoding the first-encoded service data at a code rate, first interleaving the second encoded service data, second interleaving the first interleaved service data, encoding signaling data for signaling the service data, interleaving a part of the encoded signaling data, wherein positions of data in a fore part of the encoded signaling data are maintained and positions of data in a rear part of the encoded signaling data are changed, and building a frame including a first region and a second region, wherein the first region of the frame begins with a synchronization symbol and the second region of the frame includes the second-interleaved service data; demodulating data of the frame in the received broadcast signal; decoding the encoded signaling data in the demodulated data; and decoding the second encoded service data in the demodulated data. - View Dependent Claims (2, 3)
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4. A broadcast receiver for processing broadcast data, the broadcast receiver comprising:
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a tuner to receive a broadcast signal being generated by first encoding service data to add parity data, second encoding the first encoded service data at a code rate, first interleaving the second encoded service data, second interleaving the first interleaved service data, encoding signaling data for signaling the service data, interleaving a part of the encoded signaling data, wherein positions of data in a fore part of the encoded signaling data are maintained and positions of data in a rear part of the encoded signaling data are changed, and building a frame including a first region and a second region, wherein the first region of the frame begins with a synchronization symbol and the second region of the frame includes the second-interleaved service data; a demodulator to demodulate data of the frame in the received broadcast signal; a first decoder to decode the encoded signaling data in the demodulated data; and a second decoder to decode the second encoded service data in the demodulated data. - View Dependent Claims (5, 6)
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7. A method of processing broadcast data in a broadcast transmitter, the method comprising:
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first encoding service data to add parity data; second encoding the first encoded service data at a code rate; first interleaving the second encoded service data; second interleaving the first interleaved service data; encoding signaling data for signaling the service data; interleaving a part of the encoded signaling data, wherein positions of data in a fore part of the encoded signaling data are maintained and positions of data in a rear part of the encoded signaling data are changed; building a frame including a first region and a second region, wherein the first region of the frame begins with a synchronization symbol and the second region of the frame includes the second interleaved service data; and transmitting a broadcast signal including data of the frame. - View Dependent Claims (8, 9)
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10. A broadcast transmitter for processing broadcast data, the broadcast transmitter comprising:
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a first encoder to first encode service data to add parity data; a second encoder to second encode the first-encoded service data at a code rate; a first interleaver to first interleave the second encoded service data; a second interleaver to second interleave the first interleaved service data; a third encoder to encode signaling data for signaling the service data; a third interleaver to interleave a part of the encoded signaling data, wherein positions of data in a fore part of the encoded signaling data are maintained and positions of data in a rear part of the encoded signaling data are changed; a frame builder to build a frame including a first region and a second region, wherein the first region of the frame begins with a synchronization symbol and the second region of the frame includes the second interleaved service data; and a transmitter to transmit a broadcast signal including data of the frame. - View Dependent Claims (11, 12)
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Specification