Broadcast transmitter and method of processing broadcast service data for transmission

• US 9,660,764 B2
• Filed: 08/08/2016
• Issued: 05/23/2017
• Est. Priority Date: 07/04/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, In Hwan, Kwak, Kook Yeon, Kim, Byoung Gill, Kim, Jin Woo, Lee, Hyoung Gon, Song, Won Gyu
• Primary Examiner(s): ABRAHAM, ESAW T
• Application Number:
  US15/231,407
• Publication Number:
  US 20160352461A1
• Time in Patent Office: 288 Days
• CPC Class Codes: G06F 11/10 Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
• CPC Class Codes: H03M 13/251 with block coding
• CPC Class Codes: H03M 13/271 Row-column interleaver with permutations, e.g. block interleaving with inter-row, inter-column, intra-row or intra-column permutations
• CPC Class Codes: H03M 13/2792 Interleaver wherein interleaving is performed jointly with another technique such as puncturing, multiplexing or routing
• CPC Class Codes: H03M 13/2936 comprising an outer Reed-Solomon code and an inner convolutional code
• CPC Class Codes: H04H 20/30 by a single channel
• CPC Class Codes: H04H 20/57 for mobile receivers
• CPC Class Codes: H04H 40/27 specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0042 Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape H04L1/0067 takes precedence
• 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 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 2025/03382 Single of vestigal sideband
• CPC Class Codes: H04L 25/0202 Channel estimation
• CPC Class Codes: H04L 27/066 Carrier recovery circuits H04L27/2271 takes precedence
• CPC Class Codes: H04L 63/08 : for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04N 21/23608 : Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
• 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 21/2385 : Channel allocation H04N21/266 takes precedence; Bandwidth allocation H04N21/24 takes precedence ; allocation of channels according to the instantaneous demands of the users in time-division multiplex systems H04J3/1682; admission control, resource allocation in open networks H04L12/5692; arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896; negotiating bandwidth in wireless networks H04W28/16
• CPC Class Codes: H04N 21/41407 : embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/4347 : Demultiplexing of several video streams
• CPC Class Codes: H04N 21/4381 : Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• 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 21/44008 : involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59
• CPC Class Codes: H04N 21/6433 : Digital Storage Media - Command and Control Protocol [DSM-CC]

Abstract

A method is provided for processing broadcast data in a broadcast transmitter. Broadcast service data is randomized. The randomized broadcast service data is first-encoded to add parity data to the randomized broadcast service data. The first-encoded broadcast service data is second-encoded. The second-encoded broadcast service data is first interleaved. The first-interleaved broadcast service data is second-interleaved. Signaling data is encoded for signaling the broadcast service data. The encoded signaling data is third-interleaved. The third-interleaved signaling data is fourth interleaved. A frame is transmitted that is divided into a data region including the second-interleaved broadcast service data, a first signaling region including the fourth-interleaved signaling data and a second signaling region that includes at least one symbol that is used for synchronization and channel estimation. The frame includes known data. The encoded signaling data includes information for identifying the code rate and information related to the known data.

Claims

1. A method of processing broadcast data in a broadcast transmitter, the method comprising:

randomizing broadcast service data;

first encoding the randomized broadcast service data to add parity data to the randomized broadcast service data;

second encoding the first-encoded broadcast service data at a code rate of D/E, wherein D<

E, and wherein D and E are integers equal to or greater than 1, respectively;

first interleaving the second-encoded broadcast service data;

second interleaving the first-interleaved broadcast service data;

encoding signaling data for signaling the broadcast service data;

third interleaving the encoded signaling data;

fourth interleaving the third-interleaved signaling data; and

transmitting a frame,

wherein the frame is divided into a data region including the second-interleaved broadcast service data and a first signaling region including the fourth-interleaved signaling data,

wherein the frame includes known data,

wherein the encoded signaling data includes information for identifying the code rate,

wherein the frame is further divided into a second signaling region that is located at a beginning of the frame, and

wherein the second signaling region includes at least one symbol that is used for synchronization and channel estimation.

2. The method of claim 1, wherein the encoded signaling data further includes information to identify a number of the parity data.

3. The method of claim 1, further comprising:

permuting the broadcast service data.

4. The method of claim 1, further comprising:

randomizing the encoded signaling data.

5. The method of claim 1, wherein the first interleaving performs block interleaving on the second-encoded broadcast service data.

6. A broadcast transmitter for processing broadcast data, the broadcast transmitter comprising:

a randomizer to randomize broadcast service data;

a first encoder to first encode the randomized broadcast service data to add parity data to the randomized broadcast service data;

a second encoder to second encode the first-encoded broadcast service data at a code rate of D/E, wherein D<

E, and wherein D and E are integers equal to or greater than 1, respectively;

a first interleaver to first interleave the second-encoded broadcast service data;

a second interleaver to second interleave the first-interleaved broadcast service data;

a third encoder to encode signaling data for signaling the broadcast service data;

a third interleaver to third interleave the encoded signaling data;

a fourth interleaver to fourth interleave the third-interleaved signaling data; and

a transmitting unit to transmit a frame,

wherein the frame is divided into a data region including the second-interleaved broadcast service data and a first signaling region including the fourth-interleaved signaling data,

wherein the frame includes known data,

wherein the encoded signaling data includes information for identifying the code rate,

wherein the frame is further divided into a second signaling region that is located at a beginning of the frame, and

wherein the second signaling region includes at least one symbol and the at least one symbol is used for synchronization and channel estimation.

7. The broadcast transmitter of claim 6, wherein the encoded signaling data further includes information to identify a number of the parity data.

8. The broadcast transmitter of claim 6, wherein the broadcast service data is further permuted.

9. The broadcast transmitter of claim 6, wherein the randomizer further randomizes the encoded signaling data.

10. The broadcast transmitter of claim 6, wherein the first interleaving performs block interleaving on the second-encoded broadcast service data.