Transmitting/receiving system and method for processing a broadcast signal

• US 9,800,953 B2
• Filed: 06/16/2014
• Issued: 10/24/2017
• Est. Priority Date: 05/25/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kwak, Minsung, Kim, Jeongwoo
• Primary Examiner(s): Vu, Thai
• Application Number:
  US14/306,066
• Publication Number:
  US 20140366056A1
• Time in Patent Office: 1,226 Days
• CPC Class Codes: H04H 20/59 for emergency or urgency
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04N 19/89 involving methods or arrangements for detection of transmission errors at the decoder
• 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
• CPC Class Codes: H04N 21/814 comprising emergency warnings arrangements specially adapted for emergency or urgency in broadcast systems H04H20/59; arrangements for providing alarms, notifications, alerts to substation in data switching networks H04L12/1895
• 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 method and broadcast terminal for receiving an emergency alert message in a sleep mode, are discussed. In one embodiment, the method includes monitoring fast information channel (FIC) wake-up indicator in an FIC segment to determine if the broadcast terminal should be switched to an active mode to receive the emergency alert message; getting an FIC-Chunk payload responsive to the FIC wake-up indicator in the FIC segment, the FIC-Chunk payload including an emergency alert data package indicator; receiving an alert data indicated by a data package identification included in the FIC-Chunk payload, the emergency alert data package indicator indicating an emergency alert table describing the emergency alert message is carried in the data; and parsing the emergency alert message based on the emergency alert table.

Claims

1. A method of receiving an emergency alert message by a broadcast terminal in a sleep mode, the method comprising:

receiving a broadcast signal including service data for a service and signaling data,

wherein the signaling data include a first signaling table and a second signaling table,

wherein the first signaling table includes first service identification information to identify the service, type information to indicate whether a type of the service is an emergency alert service, and indication information to indicate whether the service is hidden or not,

wherein the second signaling table includes the emergency alert message,

wherein the emergency alert message includes text data for an emergency notification and priority information to specify a priority of the emergency alert message,

wherein the first signaling table and the second signaling table are received in Internet Protocol (IP) packets,

wherein IP access information for accessing the first signaling table is identical to IP access information for accessing the second signaling table, and

wherein the first signaling table and the second signaling table are identified by a table identifier;

demodulating the received broadcast signal;

first decoding the service data and the signaling data in the demodulated broadcast signal; and

second decoding the first-decoded service data and the first-decoded signaling data,

wherein the method further comprises;

monitoring, by the broadcast terminal, wake-up indication information in the broadcast signal to determine if the broadcast terminal should be switched to an active mode to receive the emergency alert message.

2. The method of claim 1, wherein the second signaling table further includes second service identification information to identify a broadcast service related to the emergency alert message.

3. The method of claim 1, wherein the IP access information for accessing the first signaling table and the second signaling table includes a well-known IP address and a well-known port number.

4. A broadcast terminal for receiving an emergency alert message in a sleep mode, the broadcast terminal comprising:

a tuner configured to receive a broadcast signal including service data for a service and signaling data,

wherein the signaling data include a first signaling table and a second signaling table,

wherein the first signaling table includes first service identification information to identify the service, type information to indicate whether a type of the service is an emergency alert service, and indication information to indicate whether the service is hidden or not,

wherein the second signaling table includes the emergency alert message,

wherein the emergency alert message includes text data for an emergency notification and priority information to specify a priority of the emergency alert message,

wherein the first signaling table and the second signaling table are received in Internet Protocol (IP) packets,

wherein IP access information for accessing the first signaling table is identical to IP access information for accessing the second signaling table, and

wherein the first signaling table and the second signaling table are identified by a table identifier;

a demodulator configured to demodulate the received broadcast signal;

a first decoder circuit configured to first decode the service data and the signaling data in the demodulated broadcast signal; and

a second decoder circuit configured to second decode the first-decoded service data and the first-decoded signaling data,

wherein the broadcast terminal is configured to monitor wake-up indication information in the broadcast signal to determine if the broadcast terminal should be switched to an active mode to receive the emergency alert message.

5. The broadcast terminal of claim 4, wherein the second signaling table further includes second service identification information to identify a broadcast service related to the emergency alert message.

6. The broadcast terminal of claim 4, wherein the IP access information for accessing the first signaling table and the second signaling table includes a well-known IP address and a well-known port number.