VSB transmission system for processing supplemental transmission data

• US 8,130,833 B2
• Filed: 09/09/2009
• Issued: 03/06/2012
• Est. Priority Date: 12/28/2000
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, In Hwan, Gu, Young Mo, Kang, Kyung Won, Kwak, Kook Yeon
• Primary Examiner(s): An, Shawn
• Application Number:
  US12/556,211
• Publication Number:
  US 20100033636A1
• Time in Patent Office: 909 Days
• Field of Search: 375/240.12, 375/301, 375/270, 375/240.24, 375/240.23, 375/240.26, 375/240.25, 382/235, 382/246, 382/233, 455/47, 455/109
• US Class Current: 375/240.12
• 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 1/0057 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 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/2365 Multiplexing of several video streams
• 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 21/4347 Demultiplexing of several video streams
• CPC Class Codes: H04N 21/4348 Demultiplexing of additional data and video streams
• 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
• CPC Class Codes: H04N 7/52 Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal assembling of a multiplex stream by combining a video stream with other content or additional data, remultiplexing of multiplex streams, insertion of stuffing bits into the multiplex stream, assembling of a packetised elementary stream at server side H04N21/236; disassembling of a multiplex stream, remultiplexing of multiplex streams, extraction or processing of Service Information, disassembling of packetised elementary stream at client side H04N21/434

Abstract

A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data packets includes a VSB supplemental data processor and a VSB transmission system. The VSB supplemental data processor includes a Reed-Solomon coder for coding the supplemental data to be transmitted, a null sequence inserter for inserting a null sequence to an interleaved supplemental data for generating a predefined sequence, a header inserter for inserting an MPEG header to the supplemental data having the null sequence inserted therein, a multiplexer for multiplexing an MPEG data coded with the supplemental data having the MPEG header added thereto in a preset multiplexing ratio and units. The output of the multiplexer is provided to an 8T-VSB transmission system for modulating a data field from the multiplexer and transmitting the modulated data field to a VSB reception system.

Claims

1. A digital television (DTV) receiver for processing digital broadcast data, the DTV receiver comprising:

a receiving unit for receiving the digital broadcast data comprising first data and second data, wherein the second data are output by pre-processing source data before multiplexing the first data with the second data, wherein pre-processing the source data comprises coding the source data for first forward error correction (FEC), interleaving the coded source data and inserting at least three regularly spaced predefined sequences into the first FEC-coded source data, wherein the second data are coded for second FEC after multiplexing the second data with the first data; and

an equalizing unit for equalizing the received digital broadcast data with the predefined sequences.

2. The DTV receiver of claim 1, further comprising a decoding unit for decoding the equalized digital broadcast data.

3. A method of processing digital broadcast data in a digital television (DTV) receiver, the method comprising:

receiving the digital broadcast data in the DTV receiver, the digital broadcast data comprising first data and second data, wherein the second data are output by pre-processing source data before multiplexing the first data with the second data, wherein pre-processing the source data comprises coding the source data for first forward error correction (FEC)), interleaving the coded source data and inserting at least three regularly spaced predefined sequences into the first FEC-coded source data, wherein the second data are coded for second FEC after multiplexing the second data with the first data; and

equalizing the received digital broadcast data in the DTV receiver with the predefined sequences.

4. The method of claim 3, further comprising decoding the equalized digital broadcast data in the DTV receiver.

5. A digital television (DTV) receiver for processing digital broadcast data, the DTV receiver comprising:

a receiving unit for receiving the digital broadcast data comprising first data and second data, wherein the second data result from pre-processing source data before multiplexing with the first data by coding the source data for first forward error correction (FEC), interleaving the coded source data and inserting at least three regularly spaced predefined sequences into the first FEC-coded source data, multiplexing the pre-processed source data with the first data, and coding the pre-processed source data for second FEC after multiplexing with the first data; and

an equalizing unit for equalizing the received digital broadcast data with the predefined sequences.

6. The DTV receiver of claim 5, further comprising a decoding unit for decoding the equalized digital broadcast data.

7. A method of processing digital broadcast data in a digital television (DTV) receiver, the method comprising:

receiving the digital broadcast data in the DTV receiver, the digital broadcast data comprising first data and second data, wherein the second data result from pre-processing source data before multiplexing with the first data by coding the source data for first forward error correction (FEC), interleaving the coded source data and inserting at least three regularly spaced predefined sequences into the first FEC-coded source data, multiplexing the pre-processed source data with the first data, and coding the pre-processed source data for second FEC after multiplexing with the first data; and

equalizing the received digital broadcast data in the DTV receiver with the predefined sequences.

8. The method of claim 7, further comprising decoding the equalized digital broadcast data in the DTV receiver.