VSB communication system

• US 20060039503A1
• Filed: 10/21/2004
• Published: 02/23/2006
• Est. Priority Date: 04/18/2001
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, In Hwan, Gu, Young Mo, Kwak, Kook Yeon, Kang, Kyung Won
• Granted Patent: US 7,636,391 B2
• Time in Patent Office: Days
• US Class Current: 375/301
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/0046 Code rate detection or code type detection H04L1/0038 takes precedence; detection of the data rate H04L25/0262; for packet format H04L1/0091
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/006 Trellis-coded modulation
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 19/66 involving data partitioning, i.e. separation of data into packets or partitions according to importance
• CPC Class Codes: H04N 19/68 involving the insertion of resynchronisation markers into the bitstream
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002

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.

Claims

1-48. -48. (canceled)

49. A method of multiplexing supplemental data with main data in a VSB transmitter, the method comprising the step of:

multiplexing a plurality of enhanced supplemental data segments generated by inserting null bits into original supplemental data packets with a plurality of main data segments in a data field, wherein positions of the enhanced supplemental data segments are assigned to every fourth segment starting from at least one predetermined start position within the data field.

50. The method of claim 49, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equations:

for 0≦

P≦

39;

MAP={s|s=4i+1, i=0, 1, . . . , 2P−

1};


for 40≦

P≦

78;

MAP={s|s=4i+1, i=0, 1 . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 2P−

79};


for 79≦

P≦

117;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1 . . . , 77}U {s|s=4i+2, i=0, 1 . . . , 2P−

157}; and


for 118≦

P≦

156;

MAP={s|s=4i+1, i=0, 1 . . . , 77}U {s|s=4i+3, i=0, 1 . . . , 77}U {s|s=4i+2, i=0, 1 . . . , 77}U {s|s=4i+4, i=0, 1 . . . , 2P−

235};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronizing signal segment within the data field.

51. A method of multiplexing supplemental data with main data in a VSB transmitter, the method comprising the step of:

multiplexing a plurality of enhanced supplemental data segments generated by inserting null bits into original supplemental data packets with a plurality of main data segments in a data field, wherein positions of the enhanced supplemental data segments are assigned to every fourth segment starting from a predetermined start position within the data field.

52. The method of claim 51, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equation:

MAP={s|s=4i+1, i=0, 1 . . . , 2P−

1};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronization signal segment within the data field.

53. A method of multiplexing supplemental data with main data in a VSB transmitter, the method comprising the step of:

multiplexing a plurality of enhanced supplemental data segments generated by inserting null bits into original supplemental data packets with a plurality of main data segments in a data field, wherein positions of the enhanced supplemental data segments are assigned to every fourth segment starting from a first predetermined start position within the data field, and to every fourth segment starting from a second predetermined start position within the data field.

54. The method of claim 53, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equation:

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 2P−

79};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronization signal segment within the data field.

55. A method of multiplexing supplemental data with main data in a VSB transmitter, the method comprising the step of:

multiplexing a plurality of enhanced supplemental data segments generated by inserting null bits into original supplemental data packets with a plurality of main data segments in a data field, wherein positions of the enhanced supplemental data segments are assigned to every fourth segment starting from a first predetermined start position within the data field, to every fourth segment starting from a second predetermined start position within the data field, and to every fourth segment starting from a third predetermined start position within the data field.

56. The method of claim 55, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equation:

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, . . . , 2P−

157};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronization signal segment within the data field.

57. A method of multiplexing supplemental data with main data in a VSB transmitter, the method comprising the step of:

multiplexing a plurality of enhanced supplemental data segments generated by inserting null bits into original supplemental data packets with a plurality of main data segments in a data field, wherein positions of the enhanced supplemental data segments are assigned to every fourth segment starting from a first predetermined start position within the data field, to every fourth segment starting from a second predetermined start position within the data field, to every fourth segment starting from a third predetermined start position within the data field, and to every fourth segment starting from a fourth predetermined start position within the data field.

58. The method of claim 57, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equations:

MAP=s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, . . . , 77}U {s|s=4i+4, i=0, 1, . . . , 2P−

235};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronization signal segment within the data field.

59. A method of multiplexing supplemental data with main data in a VSB transmitter, the method comprising the step of:

multiplexing a plurality of enhanced supplemental data segments generated by inserting null bits into original supplemental data packets with a plurality of main data segments in a data field, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equations;

for 0≦

P≦

39;

MAP={s|s=4i+1, i=0, 1, . . . , 2P−

1};


for 40≦

P≦

78;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 2P−

79};


for 79≦

P≦

117;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, . . . , 2P−

157}; and


for 118≦

P≦

156;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, . . . , 77}U {s|s=4i+4, i=0, 1, . . . , 2P−

235};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronizing signal segment within the data field.

60. A method of demultiplexing an input signal including supplemental data and main data in a VSB receiver, the method comprising the steps of:

demultiplexing a plurality of enhanced supplemental data segments and a plurality of main data segments multiplexed in a data field, wherein positions of the enhanced supplemental data segments are assigned to every fourth segment starting from at least one predetermined start position within the data field; and

obtaining original supplemental data packets included in the data field from the demultiplexed enhanced supplemental data segments.

61. The method of claim 60, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equations:

for 0≦

P≦

39;

MAP={s|s=4i+1, i=0, 1, . . . , 2P−

1};


for 40≦

P≦

78;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 2P−

79};


for 79≦

P≦

117;

MAP {s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, . . . , 2P−

157}; and


for 118≦

P≦

156;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, . . . , 77}U {s|s=4i+4, i=0, 1, . . . , 2P−

235};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronizing signal segment within the data field.

62. A method of demultiplexing an input signal including supplemental data and main data in a VSB receiver, the method comprising the steps of:

demultiplexing a plurality of enhanced supplemental data segments and a plurality of main data segments multiplexed in a data field, wherein positions of the enhanced supplemental data segments are assigned to every fourth segment starting from a predetermined start position within the data field; and

obtaining original supplemental data packets included in the data field from the demultiplexed enhanced supplemental data segments.

63. The method of claim 62, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equation:

MAP={s|s=4i+1, i=0, 1, . . . , 2P−

1};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronization signal segment within the data field.

64. A method of demultiplexing an input signal including supplemental data and main data in a VSB receiver, the method comprising the steps of:

demultiplexing a plurality of enhanced supplemental data segments and a plurality of main data segments multiplexed in a data field, wherein positions of the enhanced supplemental data segments are assigned to every fourth segment starting from a first predetermined start position within the data field, and to every fourth segment starting from a second predetermined start position within the data field; and

obtaining original supplemental data packets included in the data field from the demultiplexed enhanced supplemental data segments.

65. The method of claim 64, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equation:

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 2P−

79};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronization signal segment within the data field.

66. A method of demultiplexing an input signal including supplemental data and main data in a VSB receiver, the method comprising the steps of:

demultiplexing a plurality of enhanced supplemental data segments and a plurality of main data segments multiplexed in a data field, wherein positions of the enhanced supplemental data segments are assigned to every fourth segment starting from a first predetermined start position within the data field, to every fourth segment starting from a second predetermined start position within the data field, and to every fourth segment starting from a third predetermined start position within the data field; and

obtaining original supplemental data packets included in the data field from the demultiplexed enhanced supplemental data segments.

67. The method of claim 66, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equation:

MAP {s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, . . . , 2P−

157};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronization signal segment within the data field.

68. A method of demultiplexing an input signal including supplemental data and main data in a VSB receiver, the method comprising the steps of:

demultiplexing a plurality of enhanced supplemental data segments and a plurality of main data segments multiplexed in a data field, wherein positions of the enhanced supplemental data segments are assigned to every fourth segment starting from a first predetermined start position within the data field, to every fourth segment starting from a second predetermined start position within the data field, to every fourth segment starting from a third predetermined start position within the data field, and to every fourth segment starting from a fourth predetermined start position within the data field; and

obtaining original supplemental data packets included in the data field from the demultiplexed enhanced supplemental data segments.

69. The method of claim 68, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equations:

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, . . . , 77}U {s|s=4i+4, i=0, 1, . . . , 2P−

235};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronization signal segment within the data field.

70. A method of demultiplexing an input signal including supplemental data and main data in a VSB receiver, the method comprising the steps of:

demultiplexing a plurality of enhanced supplemental data segments and a plurality of main data segments multiplexed in a data field; and

obtaining original supplemental data packets included in the data field from the demultiplexed enhanced supplemental data segments, wherein the positions of the plurality of enhanced supplemental data segments in the data field are expressed by the following equations;

for 0≦

P≦

39;

MAP={s|s=4i+1, i=0, 1, . . . , 2P−

1};


for 40≦

P≦

78;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . 2P−

79};


for 79≦

P≦

117;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, 2P−

157}; and


for 118≦

P≦

156;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, . . . , 77}U {s|s=4i+4, i=0, 1, . . . , 2P−

235};

wherein “

P”

denotes a number of the original supplemental data packets, and “

s”

denotes a supplemental data segment position with respect to a field synchronizing signal segment within the data field.

71. A method of multiplexing data in a VSB transmitter, the method comprising the step of:

multiplexing a first plurality of data segments and a second plurality of data segments in a data field, wherein the positions of the first plurality of data segments in the data field are expressed by the following equations;

for 0≦

P≦

39;

MAP={s|s=4i+1, i=0, 1, . . . , 2P−

1};


for 40≦

P≦

78;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 2P−

79};


for 79≦

P≦

117;

MAP=s|s=4i+1, i=0, 1 . . . , 77}U {s|s=4i+3, i=0, 1 . . . , 77}U {s|s=4i+2, i=0, 1 . . . , 2P−

157}; and


for 118≦

P≦

156;

MAP={s|s=4i+1, i=0, 1, . . . , 77}U {s|s=4i+3, i=0, 1, . . . , 77}U {s|s=4i+2, i=0, 1, . . . , 77}U {s|s=4i+4, i=0, 1, . . . , 2P−

235};

wherein “

2P”

represents a number of the first plurality of data segments, and “

s”

denotes a data segment position with respect to a field synchronizing signal segment within the data field.