Digital broadcasting system and method of processing data in digital broadcasting system

• US 9,894,638 B2
• Filed: 05/17/2017
• Issued: 02/13/2018
• Est. Priority Date: 09/20/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Chul Soo, Choi, In Hwan, Song, Jae Hyung, Kim, Jin Pil, Suh, Jong Yeul
• Primary Examiner(s): HO, DUC CHI
• Application Number:
  US15/598,072
• Publication Number:
  US 20170325197A1
• Time in Patent Office: 272 Days
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• 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 21/41407 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 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• 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 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 5/455 Demodulation-circuits
• CPC Class Codes: H04N 5/50 Tuning indicators; Automatic tuning control
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

A digital broadcasting system and a data processing method are disclosed. A receiver receives a broadcast signal including mobile service data and main service data. A known data detector detects known data from the broadcast signal. An equalizer performs channel equalization on the mobile service data received by means of the detected known data. An RS frame decoder acquires an RS frame from the channel-equalized mobile service data. A management processor extracts a Generic Stream Encapsulation (GSE) packet from a GSE Base Band (BB) constructing one row of the RS frame, and calculates an IP datagram from the extracted GSE packet. A presentation processor displays broadcast data using data contained in the calculated IP datagram.

Claims

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

receiving a broadcast signal including service data for a service, first signaling data to enable fast service acquisition and second signaling data that include transmission parameters;

demodulating the received broadcast signal;

decoding the first signaling data in the demodulated broadcast signal;

decoding the second signaling data in the demodulated broadcast signal; and

decoding the service data in the demodulated broadcast signal based on at least the first signaling data or the second signaling data,

wherein the decoded service data are included in a baseband frame,

wherein the baseband frame includes one or more data packets that include an Internet Protocol (IP) packet or a fragment of the IP packet, the IP packet including a compressed header and the service data,

wherein the first signaling data include information for locating where service layer signaling is carried, and

wherein the service layer signaling includes access information of the service data.

2. The method of claim 1, further comprising:

extracting the one or more data packets from the baseband frame; and

decompressing the compressed header of the IP packet included in the extracted one or more data packets in order to reconstruct an original IP packet.

3. The method of claim 2, wherein the compressed header is decompressed based on a Robust Header Compression (ROHC) scheme.

4. The method of claim 1, wherein one of the one or more data packets includes the IP packet or the fragment of the IP packet.

5. The method of claim 4, wherein a header of each of the one or more data packets includes information indicating whether the corresponding data packet carries a part of the IP packet and information to reassemble fragments belonging to the IP packet.

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

a tuner to receive a broadcast signal including service data for a service, first signaling data to enable fast service acquisition and second signaling data that include transmission parameters;

a demodulator to demodulate the received broadcast signal; and

a decoder to;

decode the first signaling data in the demodulated broadcast signal;

decode the second signaling data in the demodulated broadcast signal; and

decode the service data in the demodulated broadcast signal based on at least the first signaling data or the second signaling data,

wherein the decoded service data are included in a baseband frame,

wherein the baseband frame includes one or more data packets that include an Internet Protocol (IP) packet or a fragment of the IP packet, the IP packet including a compressed header and the service data,

wherein the first signaling data include information for locating where service layer signaling is carried, and

wherein the service layer signaling includes access information of the service data.

7. The receiver of claim 6, further comprising:

a handler to extract the one or more data packets from the baseband frame and decompress the compressed header of the IP packet included in the extracted one or more data packets in order to reconstruct an original IP packet.

8. The receiver of claim 7, wherein the compressed header is decompressed based on a Robust Header Compression (ROHC) scheme.

9. The receiver of claim 6, wherein one of the one or more data packets includes the IP packet or the fragment of the IP packet.

10. The receiver of claim 9, wherein a header of each of the one or more data packets includes information indicating whether the corresponding data packet carries a part of the IP packet and information to reassemble fragments belonging to the IP packet.