Digital broadcasting system and data processing method

• US 10,084,568 B2
• Filed: 07/26/2016
• Issued: 09/25/2018
• Est. Priority Date: 09/21/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, In Hwan, Suh, Jong Yeul, Lee, Chul Soo, Song, Jae Hyung, Kim, Jin Pil
• Primary Examiner(s): Chaudry, Mujtaba M
• Application Number:
  US15/220,337
• Publication Number:
  US 20160353254A1
• Time in Patent Office: 791 Days
• Field of Search: None
• CPC Class Codes: H04H 20/55 for traffic information
• CPC Class Codes: H04H 20/57 for mobile receivers
• CPC Class Codes: H04H 60/07 characterised by processes or methods for the generation
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0061 Error detection codes
• 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 27/02 Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation H04L27/32 takes precedence
• CPC Class Codes: H04N 7/015 High-definition television systems
• CPC Class Codes: H04N 7/088 the inserted signal being digital
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]

Abstract

A digital broadcasting system is provided. The system includes an RS (Reed-Solomon) encoder configured to encode mobile service data for FEC (Forward Error Correction) to build RS frames including the mobile service data and a signaling information table, a signaling encoder configured to encode signaling information including fast information channel (FIC) data and transmission parameter channel (TPC) data, a group formatter configured to form data groups, wherein at least one of the data groups includes encoded mobile service data, known data sequences, the FIC data and the TPC data, and a transmission unit configured to transmit the broadcast signal including a parade of the data groups.

Claims

1. A transmitting system for transmitting a broadcast signal, the transmitting system comprising:

a first encoder for encoding service data and first signaling information for FEC (Forward Error Correction), the first signaling information including access information for accessing the service data;

a second encoder for encoding second signaling information for fast service acquisition;

a generator for generating a frame that includes the encoded service data, the encoded first signaling information and the encoded second signaling information; and

a transmission unit for transmitting the broadcast signal that includes the generated frame,

wherein the second signaling information includes service type information indicating a type of a service for the service data, and

wherein the service data include data for an emergency alert when the type of the service indicates that the service is for notifying the emergency alert.

2. The transmitting system of claim 1, wherein:

the broadcast signal further includes transmission parameters for the service data; and

the transmission parameters include a code rate.

3. The transmitting system of claim 1, wherein the second signaling information further includes information identifying a broadcast stream, information indicating a channel number of the service and information indicating whether the service is hidden.

4. A method for transmitting a broadcast signal, the method comprising:

encoding, by a first encoder, service data and first signaling information for FEC (Forward Error Correction), the first signaling information including access information for accessing the service data;

encoding, by a second encoder, second signaling information for fast service acquisition;

generating, by a generator, a frame that includes the encoded service data, the encoded first signaling information and the encoded second signaling information; and

transmitting, by a transmission unit, the broadcast signal that includes the generated frame,

wherein the second signaling information includes service type information indicating a type of a service for the service data, and

wherein the service data include data for an emergency alert when the type of the service indicates that the service is for notifying the emergency alert.

5. The method of claim 4, wherein:

the broadcast signal further includes transmission parameters for the service data; and

the transmission parameters include a code rate.

6. The method of claim 4, wherein the second signaling information further includes information identifying a broadcast stream, information indicating a channel number of the service and information indicating whether the service is hidden.

7. A receiving system for receiving a broadcast signal, the receiving system comprising:

a tuner for receiving the broadcast signal including a frame that includes service data, first signaling information including access information for accessing the service data and second signaling information for fast service acquisition, the second signaling information including service type information indicating a type of a service for the service data and the service data including data for an emergency alert when the type of the service indicates that the service is for notifying the emergency alert;

a demodulator for demodulating data of the frame in the received broadcast signal;

a first decoder for decoding the second signaling information in the demodulated data;

a second decoder for decoding the service data in the demodulated data; and

a processor for;

acquiring the data for the emergency alert from the decoded service data based on the access information when the type of the service indicates that the service is for notifying the emergency alert; and

providing the acquired data for the emergency alert to a user through at least a screen or a speaker.

8. The receiving system of claim 7, wherein:

the broadcast signal further includes transmission parameters for the service data; and

the transmission parameters include a code rate.

9. The receiving system of claim 7, wherein the second signaling information further includes information identifying a broadcast stream, information indicating a channel number of the service and information indicating whether the service is hidden.

10. A method of receiving a broadcast signal in a receiving system, the method comprising:

receiving, by a tuner, the broadcast signal including a frame that includes service data, first signaling information including access information for accessing the service data and second signaling information for fast service acquisition, the second signaling information including service type information indicating a type of a service for the service data and the service data including data for an emergency alert when the type of the service indicates that the service is for notifying the emergency alert;

demodulating, by a demodulator, data of the frame in the received broadcast signal;

decoding, by a first decoder, the second signaling information in the demodulated data;

decoding, by a second decoder, the service data in the demodulated data;

acquiring, by a processor, the data for the emergency alert from the decoded service data based on the access information when the type of the service indicates that the service is for notifying the emergency alert; and

providing, by the processor, the acquired data for the emergency alert to a user through at least a screen or a speaker.

11. The method of claim 10, wherein:

the broadcast signal further includes transmission parameters for the service data; and

the transmission parameters include a code rate.

12. The method of claim 10, wherein the second signaling information further includes information identifying a broadcast stream, information indicating a channel number of the service and information indicating whether the service is hidden.