VSB communication system
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Abstract
A VSB communication system comprises a VSB transmission system and a VSB reception system. The VSB transmission system multiplexes a coded MPEG data and a coded supplemental data having a null sequence inserted therein, with required multiplexing information included in a field synchronization signal or in a supplemental data according to a number of the supplemental data packets being transmitted. The VSB reception system detects the required multiplexing information from the field synchronization signal or the supplemental data and decodes the multiplexed data by using the null sequence and the detected multiplexing information, as well as demultiplexes the multiplexed data into the MPEG data and the supplemental data.
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Citations
97 Claims
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1-48. -48. (canceled)
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49. An enhanced VSB transmitter for transmitting main data and supplemental data, the enhanced VSB transmitter comprising:
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a VSB pre-processor for coding original supplemental data packets for first forward error correction (FEC) and enhancing the first FEC coded data packets by inserting a plurality of null bits into each packet;
a first multiplexer for multiplexing the enhanced supplemental data packets with main data packets at a predetermined ratio in a data field, the data field having a plurality of supplemental and main data segments;
a VSB main processor for coding the multiplexed data packets for second forward error correction (FEC); and
a data format converter for formatting the second FEC coded data packets for transmission and transmitting the formatted data packets to one or more VSB receivers. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. A method of transmitting main data and supplemental data, the method comprising the steps of:
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coding original supplemental data packets for first forward error correction (FEC);
enhancing the first FEC coded data packets by inserting a plurality of null bits into each data packet;
multiplexing the enhanced supplemental data packets with main data packets at a predetermined ratio in a data field, the data field having a plurality of supplemental and main data segments;
coding the multiplexed data packets for second forward error correction (FEC);
formatting the second FEC coded data packets for transmission; and
transmitting the formatted data packets to one or more VSB receivers. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70, 71)
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72. An enhanced VSB transmitter for transmitting main data and supplemental data, the enhanced VSB transmitter comprising:
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a VSB pre-processor for coding original supplemental data packets for first forward error correction (FEC) and enhancing the first FEC coded data packets by inserting a plurality of null bits into each packet;
a first multiplexer for multiplexing the enhanced supplemental data packets with main data packets in a data field, the data field having a plurality of supplemental and main data segments, wherein positions of the supplemental data segments are assigned to every fourth segment starting from at least one predetermined start position within the data field;
a VSB main processor for coding the multiplexed data packets for second forward error correction (FEC); and
a data format converter for formatting the second FEC coded data packets for transmission and transmitting the formatted data packets to one or more VSB receivers. - View Dependent Claims (73)
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74. A method of transmitting main data and supplemental data, the method comprising the steps of:
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coding original supplemental data packets for first forward error correction (FEC);
enhancing the first FEC coded data packets by inserting a plurality of null bits into each data packet;
multiplexing the enhanced supplemental data packets with main data packets in a data field, the data field having a plurality of supplemental and main data segments, wherein positions of the supplemental data segments are assigned to every fourth segment starting from at least one predetermined start position within the data field;
coding the multiplexed data packets for second forward error correction (FEC);
formatting the second FEC coded data packets for transmission; and
transmitting the formatted data packets to one or more VSB receivers. - View Dependent Claims (75)
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76. An enhanced VSB receiver for receiving main data and supplemental data from a VSB transmitter, the enhanced VSB receiver comprising:
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a main VSB processor receiving and decoding a data field, wherein a plurality of enhanced supplemental data segments generated by inserting null bits into original supplemental data packets and a plurality of main data segments are multiplexed at a predetermined ratio in the data field;
a multiplexing information detector for detecting multiplexing information from a field synchronizing signal segment included in the data field;
a demultiplexer for demultiplexing the enhanced supplemental data segments and the main data segments from the data field using the detected multiplexing information; and
a supplemental VSB processor for decoding the demultiplexed enhanced supplemental data segments to obtain the original supplemental data packets. - View Dependent Claims (77, 78, 79, 80, 81, 82, 83, 84, 85, 86)
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87. A method of receiving main and supplemental data from a VSB transmitter, the method comprising:
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receiving and decoding a data field, wherein a plurality of enhanced supplemental data segments generated by inserting null bits into original data packets and a plurality of main data segments are multiplexed at a predetermined ratio in the data field;
detecting multiplexing information from a field synchronizing signal segment included in the data field;
demultiplexing the enhanced supplemental data segments and the main data segments from the data field using the detected multiplexing information; and
processing the demultiplexed enhanced supplemental data segments to obtain the original data packets. - View Dependent Claims (88, 89, 90, 91, 92, 93, 94, 95)
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96. An enhanced VSB receiver for receiving main data and supplemental data from a VSB transmitter, the enhanced VSB receiver comprising:
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a main VSB processor receiving and decoding a data field, wherein a plurality of enhanced supplemental data segments and a plurality of main data segments are multiplexed in the data field and positions of the plurality of enhanced supplemental data segments are assigned to every fourth segment starting from at least one predetermined start position within the data field;
a multiplexing information detector for detecting multiplexing information from a field synchronizing signal segment included in the data field;
a demultiplexer for demultiplexing the enhanced supplemental data segments and the main data segments from the data field using the detected multiplexing information; and
a supplemental VSB processor for processing the demultiplexed enhanced supplemental data segments to obtain original supplemental data packets.
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97. A method of receiving supplemental and main data from a VSB transmitter, the method comprising:
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receiving and decoding a data field, wherein a plurality of enhanced supplemental data segments and a plurality of main data segments are multiplexed in the data field and positions of the plurality of enhanced supplemental data segments are assigned to every fourth segment starting from at least one predetermined start position within the data field;
detecting multiplexing information from a field synchronizing signal segment included in the data field;
demultiplexing the enhanced supplemental data segments and the main data segments from the data field using the detected multiplexing information; and
processing the demultiplexed enhanced supplemental data segments to obtain original supplemental data packets.
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Specification