Transmitter, transmission method, receiver, reception method, and computer program

Patent metadata

Field	Value
Publication number	US-2016192033-A1
Application number	US-201414908005-A
Country	US
Kind code	A1
Filing date	Jun 23, 2014
Priority date	Sep 18, 2013
Publication date	Jun 30, 2016
Grant date	—

Abstract

Transmission of emergency alert information using a broadcasting service in an appropriate manner is achieved. A transmitter 200 (broadcasting station) inserts a wake-up signal as signaling of emergency alert information, describes information including a scale (category), type, occurrence time, and occurrence position of disaster, and version information as a message of emergency alert information, and transmits the message using a packet structure of a physical layer. A simple and inexpensive receiver 300 equipped with only a receiving antenna for broadcasting and a demodulator can receive the message of emergency alert information. An evacuation direction and a map or route to a shelter can be displayed using digital signage or streetlights, and an evacuation route can be instructed using streetlights.

First claim

1 . A transmitter comprising:
an emergency alert information acquisition unit configured to acquire emergency alert information; and a transmitting unit configured to transmit the emergency alert information using a packet structure of a physical layer or an extension header of a data link layer.

2 . The transmitter according to claim 1 ,
wherein the transmitting unit transmits the transmission frame in a broadcast channel assigned to a broadcasting station.

3 . The transmitter according to claim 2 , farther comprising:
a broadcast content acquisition unit configured to acquire broadcast content, wherein the transmitting unit transmits the broadcast content using a packet structure of a middleware layer.

4 . The transmitter according to claim 1 ,
wherein the transmitting unit stores signaling and a message of the emergency alert information in a header of a data link packet.

5 . The transmitter according to claim 4 ,
wherein the transmitting unit inserts a wake-up indicator to be used for a receiver into the signaling of the emergency alert information.

6 . The transmitter according to claim 4 ,
wherein the transmitting unit inserts a level of a message into the signaling of the emergency alert information.

7 . The transmitter according to claim 4 ,
wherein the transmitting unit inserts at least one of a category of disaster, a type of disaster, an occurrence time of disaster, an occurrence position of disaster, and a scale of disaster into the signaling of the emergency alert information.

8 . The transmitter according to claim 4 ,
wherein the transmitting unit inserts indication information indicating a fixed length message or a variable length message into the message of the emergency alert information.

9 . The transmitter according to claim 4 ,
wherein the transmitting unit stores the signaling and the message of the emergency alert information using an extension header of a data link packet.

10 . A transmission method comprising;
an emergency alert information acquisition step of acquiring emergency alert information; and a transmission step of transmitting the emergency alert information using a packet structure of a physical layer or an extension header of a data link layer.

11 . A receiver comprising:
a receiving antenna; a demodulator configured to demodulate a signal received via the receiving antenna; and a processor configured to process emergency alert information included in a packet structure of a physical, layer or an extension header of a data link layer in a received frame.

12 . The receiver according to claim 11 ,
wherein the processor analyzes signaling of the emergency alert information stored in a header of a received data link packet and displays an emergency message based on a result obtained by the analysis.

13 . The receiver according to claim 12 ,
wherein the processor analyzes the signaling of the emergency alert information including at least one of a category of disaster, a type of disaster, an occurrence time of disaster, an occurrence position of disaster, and a scale of disaster.

14 . The receiver according to claim 11 ,
wherein the processor analyzes a message of the emergency alert information stored in a header of a received data link packet and displays an emergency message based on a result obtained by the analysis.

15 . The receiver according to claim 14 ,
wherein the processor analyzes the message of the emergency alert information including indication information indicating a fixed length message or a variable length message.

16 . The receiver according to claim 11 , further comprising;
a position information acquisition unit configured to acquire position information, wherein the processor displays an emergency message based on a result obtained by analyzing the emergency alert information stored in a header of a received data link packet and the position information.

17 . The receiver according to claim 16 ,
wherein the emergency alert information includes information regarding a position at which a disaster occurs, and wherein the processor displays a message of alert information and an evacuation instruction when the position information is within a target area for an alert and an evacuation, and the processor generates and displays only the message of the emergency alert information when the position information is outside the target area for the alert and the evacuation.

18 . The receiver according to claim 11 , further comprising:
a wake-up indicator filter configured to detect a wake-up indicator included in the emergency alert information; and a power controller configured to control a power source in the receiver based on a result obtained by the detection.

19 . A reception, method comprising:
a demodulation step of demodulating a received signal; and a processing step of processing emergency alert information included in a packet structure of a physical layer or an extension header of a data link layer in a received frame.

20 . A computer program written in a computer-readable form for causing a computer to function as:
a demodulator configured to demodulate a received signal; and a processor configured to process emergency alert information included in a packet structure of a physical layer or an extension header of a data link layer in a received frame.

Assignees

• Sony Corp

Inventors

• Kitahara Jun
• Dewa Yoshiharu
• Hashimoto Katsunori

Classifications

• G08B27/00

  Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations · CPC title

• H04N21/814 Primary

  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 title

• H04N21/237

  Communication with additional data server · CPC title

• H04N21/4882

  for displaying messages, e.g. warnings, reminders (arrangements for providing short real-time information to substation in data switching networks H04L12/1895) · CPC title

• H04N21/41415

  involving a public display, viewable by several users in a public space outside their home, e.g. movie theatre, information kiosk · CPC title