JP2008199188A - Emergency warning broadcasting system, cbs signal transmitter and cellular phone terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an emergency warning broadcasting system which does not influence to a structure of broadcasting organizations, reduces electric power consumption of a cellular phone terminal provided with a digital TV broadcast receiving function, and reliably transmits emergency warning broadcasting in digital TV broadcasting to the cellular phone terminal. <P>SOLUTION: The emergency warning broadcasting system comprises a program information generation and transmitting apparatus which transmits digital broadcast waves including emergency warning broadcasting, a CBS signal transmitter which distributes CBS signals that notify beginning of emergency warning broadcasting through base stations when receiving the digital broadcast waves including the emergency warning broadcasting, and the cellular phone terminal which starts receiving of digital broadcast waves when detecting that received CBS signals are ones which notify beginning of emergency warning broadcasting. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an emergency alert broadcast notification system, a CBS signal transmission device, and a mobile phone terminal that notify the start of an emergency alert broadcast by cell broadcast (hereinafter referred to as CBS).

  In a digital TV broadcasting system, a receiving terminal always stands by in a state where it can receive program information of a program broadcast by a broadcasting station, and the owner of the receiving terminal is always ready by periodically transmitting program information. Program information can be referred to. However, in order for the owner of the receiving terminal to watch without overlooking the emergency alert broadcast, the receiving circuit for receiving the program information of the receiving terminal is always supplied with power even when the program information is not being received. Therefore, the power consumption of the receiving terminal has increased.

  As a means for solving this problem, in a digital TV broadcast receiving terminal, when emergency information is notified, the power supply to the display device is started to display the contents of the emergency alert broadcast, thereby allowing the power consumption during standby. In addition, there is a receiving terminal that can receive an emergency warning broadcast even during standby (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-196342 (page 5-6, FIG. 1)

In Patent Document 1, an emergency warning of a digital TV is transmitted via a transmission path different from that of a digital TV broadcast such as a telephone line, a power line, an AM / FM wave, or CATV, by a program information generation / transmission device owned by a broadcaster. The receiving terminal is notified of the broadcast activation signal, and the receiving terminal that has received the emergency warning broadcast activation signal activates the input means of the digital TV broadcast to start receiving the emergency alarm broadcast.
For this reason, when the telephone function of the receiving terminal is used as a transmission path, there is a problem that it is not easy to implement because the broadcaster needs to provide a bearer for the mobile phone.
In addition, when the activation signal is transmitted by the AM / FM wave, an apparatus for receiving the AM / FM wave is required at the receiving terminal, and further, the AM / FM wave must be received at all times in order to receive the activation signal. However, although the power consumption of the input means for digital TV broadcasting is reduced, there is a problem that the power consumption of the start signal input means for AM / FM waves increases.

  The present invention was made to solve the above-described problems, does not affect the configuration of the broadcaster, and while reducing the power consumption of the mobile phone terminal with a digital TV broadcast reception function, It is an object of the present invention to obtain an emergency warning broadcast notification system that can reliably notify a digital TV broadcast emergency warning broadcast to the mobile phone terminal.

  An emergency alert broadcast notification system according to the present invention includes a program information generation / transmission apparatus provided with a transmission means for transmitting a digital broadcast wave, a first broadcast reception means for receiving the digital broadcast wave, and the first broadcast reception means. CBS transmission signal generating means for generating a CBS (cell broadcast) signal for notifying that an emergency warning broadcast is started when detecting that an emergency warning broadcast is included in the digital broadcast wave received by the mobile station, and a base A CBS signal transmitting device comprising CBS signal transmitting means for simultaneously transmitting the CBS signal via a station, second broadcast receiving means for receiving the digital broadcast wave, CBS signal receiving means for receiving the CBS signal, CBS signal analyzing means for detecting the type of CBS signal, and the CBS signal received by the CBS signal receiving means by the CBS signal analyzing means. When it is detected that a signal for notifying the start of the emergency warning broadcast, is made of a cellular phone terminal provided with a power control device for supplying electric power to said second broadcasting receiving means.

  The emergency alert broadcast notification system according to the present invention includes a program information generating / transmitting device that transmits a digital broadcast wave including an emergency alert broadcast, and an emergency alert via a base station when the digital broadcast wave including the emergency alert broadcast is received. A CBS signal transmission device that simultaneously transmits a CBS signal that notifies the start of broadcasting, and a mobile phone terminal that starts receiving a digital broadcast wave when it detects that the received CBS signal is a signal that notifies the start of emergency alert broadcasting Therefore, it is possible to reliably notify the mobile phone terminal of an emergency warning broadcast of digital broadcasting without affecting the configuration of the broadcaster and reducing the power consumption of the mobile phone terminal with a digital broadcast receiving function. effective.

Embodiment 1 FIG.
FIG. 1 is a diagram showing an outline of the emergency alert broadcast notification system according to the first embodiment.
First, when program data and program time of digital TV broadcast or digital radio broadcast are input from the broadcaster's information input means 1 to the program information generation / transmission apparatus 2, the program information generation means 21 of the program information generation / transmission apparatus 2. Generates program information from the input information, and sends the generated program information together with the program broadcast from the sending means 22 as a broadcast wave. If emergency broadcast data is input from the information input means 1 at this time, the broadcast program information to be transmitted includes emergency broadcast data together with the program data and the time of the program.

  The broadcast receiving means 31 of the CBS signal transmitting device 3 receives the program information transmitted from the program information generating / transmitting device 2, and when the received program information includes emergency broadcast data, an emergency warning broadcast is performed. A CBS signal for notifying the start is generated by the CBS transmission signal generating means 32, and the generated CBS signal is transmitted from the CBS signal transmitting means 33 to the mobile phone base station 4. The CBS signal includes a message ID that can be identified as a notification that an emergency alert broadcast has started, and the CBS-Message-Information-Page includes a physical channel, a service ID, or a sequence ID that includes the emergency alert broadcast.

  When the input means 41 of the mobile phone base station 4 receives the CBS signal from the CBS signal transmission device 3, the received CBS signal is transferred from the CBS signal transmission means 42 to the mobile phone terminals 5 </ b> A to 5 </ b> A existing in the cell of the mobile phone base station 4. It transmits to the telephone terminal 5n all at once.

Normally, power is not supplied to the broadcast receiving means 51 and the display means 52 of the mobile phone terminal 5, and the power control means 53 can supply power to the broadcast receiving means 51 and the display means 52 independently. .
When the broadcast receiving means 51 receives the program broadcast and the program information sent from the program information generating and sending apparatus 2, the program broadcast is displayed on the display device 54 via the display means 52. The display means 52 creates a program guide based on the received program information, and the created program guide can be displayed on the display device 54 by a user operation.

When the CBS signal receiving means 55 receives a CBS signal from the mobile phone base station 4, the CBS signal analyzing means 56 determines whether or not the received CBS signal is a notification signal for starting an emergency warning broadcast, and receives the received CBS signal. Is determined to be an emergency alert broadcast start notification signal, power is supplied to the broadcast receiving means 51 and the display means 52, and the broadcast receiving means 51 transmits an emergency alert broadcast as a program broadcast from the program information generating / sending device 2. Reception is started and the emergency alert broadcast is displayed on the display device 54 via the display means 52.
The other mobile phone terminals 5B to 5n existing in the same cell as the mobile phone terminal 5A operate in the same manner as the mobile phone terminal 5A.

Next, FIG. 2 is a flowchart showing the operation of the CBS signal transmission apparatus 3 according to the first embodiment.
When receiving the program information transmitted from the program information generating / transmitting device 2 (St21), the broadcast receiving means 31 determines whether or not the received program information includes emergency broadcast data (St22). If the received program information does not include emergency broadcast data, the process returns to St21.
In St22, when it is detected that the emergency broadcast data is included, the CBS transmission signal generation means 32 generates a CBS signal for notifying the start of the emergency warning broadcast (St23), and the generated CBS signal is displayed. Transmission is performed from the CBS signal transmission means 33 to the mobile phone base station 4 (St24).
The broadcast receiving means 31 continues to receive the program information transmitted from the program information generating / transmitting apparatus 2 and when it is detected that the emergency broadcast data is not included in the received program information, the CBS transmission signal generating means 32 Generates a CBS signal for notifying the end of the emergency alert broadcast, and transmits the generated CBS signal from the CBS signal transmitting means 33 to the mobile phone base station 4.

FIG. 3 is a flowchart showing the operation of the mobile phone terminal 5 according to the first embodiment.
When the CBS signal receiving unit 55 receives a CBS signal from the mobile phone base station 4 (St31), the CBS signal analyzing unit 56 determines whether or not the received CBS signal is a signal notifying the start of emergency alert broadcasting ( St32). If the received CBS signal is not a signal for notifying the start of the emergency warning broadcast, other CBS signal reception processing is performed (St33).
In St32, when the received CBS signal is a signal notifying the start of emergency alert broadcasting, the CBS signal analyzing unit 56 starts supplying power to the broadcast receiving unit 51 and the display unit 52 to the power control unit 53. (St34).

  At this time, if power has already been supplied to the broadcast receiving means 51 and a program broadcast has been received, the power control means 53 continues to supply power to the broadcast receiving means 51 and switches the currently received program broadcast to an emergency alert broadcast. Further, if power is supplied to the display means 52, the power control means 53 continues to supply power to the display means 52 and displays an emergency alert broadcast on the display device 54. If power is not supplied to the display means 52, the power control means 53 starts supplying power to the display means 52 and causes the display device 54 to display an emergency warning broadcast. In addition, it is stored that a normal program broadcast was being received, and that it was being displayed or recorded.

  If power is not supplied to the broadcast receiving means 51 at St34, the power control means 53 starts supplying power to the broadcast receiving means 51 and the display means 52 and instructs the broadcast receiving means 51 to start receiving. The broadcast receiving means 51 starts receiving the emergency alert broadcast (St35), and starts displaying the emergency alert broadcast on the display device 54 via the display means 52. Also, it is stored that the normal program broadcast was not being received.

FIG. 4 is a diagram showing a power control flow when the emergency alert broadcast is ended while the emergency alert broadcast is being displayed in the mobile phone terminal 5 according to the first embodiment.
When the CBS signal receiving means 55 receives the CBS signal from the mobile phone base station 4 (St41), the CBS signal analyzing means 56 determines whether or not the received CBS signal is a signal for notifying the end of the emergency warning broadcast (St42). If it is not a signal notifying the end of the emergency alert broadcast, other CBS signal reception processing is performed (St43).
If it is determined in St42 that the received CBS signal is a signal for notifying the end of the emergency alert broadcast, the CBS signal analyzing means 56 notifies the power control means 53 that the reception of the emergency alert broadcast is completed (St44). .
The power control means 53 notified of the end of the reception of the emergency warning broadcast determines whether or not the normal program broadcast has been received before the reception of the emergency warning broadcast (St45). When determining that the normal program broadcast has not been received, the power control means 53 stops the power supply to the broadcast receiving means 51 and the display means 52 (St46).
If it is determined at St45 that a normal program broadcast has been received, the program is switched to the program broadcast that was received before the emergency alert broadcast was received. The display and recording are also returned to the state before receiving the emergency warning broadcast, and the process is terminated.

  As described above, the emergency alert broadcast notification system according to the first embodiment can reliably notify the mobile phone terminal 5 of the emergency alert broadcast by digital TV broadcast or digital radio broadcast while reducing the power consumption of the mobile phone terminal 5. The user can surely view the emergency warning broadcast without worrying about the power consumption of the mobile phone terminal 5.

Embodiment 2. FIG.
In the first embodiment, the mobile phone terminal 5 receives the end of the emergency alert broadcast as a CBS signal. However, in the second embodiment, the end of the emergency alert broadcast is acquired from the broadcast wave transmitted from the broadcast receiving means 51. The case where it does is demonstrated.

FIG. 5 is a diagram showing a power control flow when the emergency alert broadcast is completed during the reception of the emergency alert broadcast in the mobile phone terminal 5 according to the second embodiment.
When the broadcast receiving means 51 receives the program information from the program information generating / transmitting apparatus 2, the broadcast receiving means 51 determines whether or not the emergency broadcast data is not included in the received program information. If it is determined that the emergency broadcast data is no longer included in the received program information, the broadcast receiving means 51 notifies the power control means 53 that the reception of the emergency alert broadcast has been completed (St51).
The power control means 53 notified of the end of the reception of the emergency warning broadcast determines whether or not the normal program broadcast has been received before receiving the emergency warning broadcast (St52). If it is determined that the normal program broadcast has not been received, the power control means 53 stops the power supply to the broadcast receiving means 51 and the display means 52 (St53).
If it is determined at St52 that a normal program broadcast has been received, the program is switched to the program broadcast that was received before the emergency alert broadcast was received. The display and recording are also returned to the state before receiving the emergency warning broadcast, and the process is terminated.

Embodiment 3 FIG.
In the third embodiment, it is possible to cope with the case where the reception state of the CBS signal is out of range in the first embodiment and the mobile phone terminal 5 becomes unable to detect the start notification of the emergency warning broadcast by the CBS signal.
FIG. 6 is a block diagram of the mobile phone terminal 5 according to the third embodiment. In addition to the block diagram of the mobile phone terminal 5 in FIG. 1, the area that notifies the power control means 53 of a change in the reception state of the CBS signal State change notification means 57 is provided.

  FIG. 7 is a flowchart showing the operation of the in-zone state change notification means 57 of the mobile phone terminal 5 according to the third embodiment. FIG. 8 is a flowchart showing power control when the CBS reception state changes from within the service area to the outside of the service area, and FIG. 9 is a flowchart showing power control when the CBS reception state changes from outside the service area to the inside of the service area.

First, the operation of the in-zone state change notification unit 57 when the reception state of the CBS signal changes will be described with reference to FIG.
The in-zone state change notification means 57 monitors the reception state of the CBS signal (St71), and checks whether or not the reception state of the CBS signal has changed from within the area to the outside of the area (St72). When it is detected that the reception state of the CBS signal has changed from within the range, the power control unit 53 is notified that the reception state of the CBS signal has changed from within the range (St73).

  If it is not detected in St72 that the CBS signal reception state has changed from the service area to the service area, the service area change notification means 57 checks whether or not the CBS signal reception state has changed from the service area to the service area ( St74). When it is detected that the reception state of the CBS signal has changed from outside the service area to the service area, the power control unit 53 is notified that the reception state of the CBS signal has changed from outside the service area to the service area (St75).

  If it is not detected in St74 that the CBS signal reception state has changed from outside the service area to within the service area, the process returns to St71 and the monitoring of the CBS signal reception state is repeated.

Next, the operation of the power control means 53 when the reception state of the CBS signal changes from within the range to outside the range will be described with reference to FIG.
When the power control means 53 is notified from the in-zone state change notifying means 57 that the CBS reception state has changed from the in-zone to the out-of-range (St81), whether or not the broadcast receiving means 51 is supplied with power and is receiving a program broadcast. Is determined (St82).
If the program broadcast is not being received, the power control means 53 starts to supply power to the broadcast receiving means 51 (St83), and instructs the broadcast receiving means 51 to start receiving program information. When the emergency broadcast data is included in the program information obtained from the broadcast receiving means 51, the power control means 53 starts supplying power to the display means 52 and displays the emergency alert broadcast on the display device 54. Let In St82, if power has already been supplied to the broadcast receiving means 51 and a program broadcast has been received, the power control means 53 ends the process while continuing to supply power to the broadcast receiving means 51.

The operation of the power control means 53 when the reception state of the CBS signal changes from outside the service area to within the service area will be described with reference to FIG.
When notified that the CBS reception state has changed from outside the service area to the service area (St91), the power control means 53 determines whether or not the program broadcast is being displayed or recorded (St92). If power control means 53 determines that the program broadcast is not displayed or recorded, power control means 53 stops power supply to broadcast receiving means 51 and display means 52 (ST93).
If it is determined in St92 that the program broadcast is being displayed or recorded, the process ends with the display and recording being continued.

  As described above, in the third embodiment, when the reception state of the CBS signal is out of service and the mobile phone terminal 5 cannot detect the emergency alert broadcast start notification by the CBS signal, the power is supplied to the broadcast receiving means 51 and the broadcast wave is transmitted. Since the start of emergency alert broadcasting can be detected from the outside and the CBS signal reception state changes from outside the service area to the service area, the power supply to the broadcast receiving means 51 is stopped again. Even when out of service area, power consumption can be reduced while detecting the start of emergency alert broadcasting.

It is a figure which shows the outline | summary of the emergency alert broadcast alerting | reporting system which concerns on Embodiment 1. FIG. 4 is a flowchart showing an operation of the CBS signal transmission device 3 according to the first embodiment. 3 is a flowchart showing an operation of the mobile phone terminal 5 according to the first embodiment. FIG. 6 is a diagram showing a power control flow when the emergency alert broadcast is finished while viewing the emergency alert broadcast in the mobile phone terminal 5 according to the first embodiment. FIG. 10 is a diagram showing a power control flow when the emergency alert broadcast is finished while viewing the emergency alert broadcast in the mobile phone terminal 5 according to the second embodiment. 7 is a block diagram of a mobile phone terminal 5 according to Embodiment 3. FIG. 10 is a flowchart showing an operation of a staying state change notifying unit 57 of the mobile phone terminal 5 according to the third embodiment. In Embodiment 3, it is a flowchart which shows electric power control when the CBS reception state changes from the inside to the outside. In Embodiment 3, it is a flowchart which shows electric power control when the CBS reception state changes from the outside area to the inside area.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Information input means 2 Program information production | generation transmission device 21 Program information production | generation means 22 Transmission means 3 CBS signal transmission device 31 Broadcast reception means 32 CBS transmission signal generation means 33 CBS signal transmission means 4 Mobile phone base station 41 Input means 42 CBS signal transmission Means 5 Cellular phone terminal 51 Broadcast receiving means 52 Display means 53 Power control means 54 Display device 55 CBS signal receiving means 56 CBS signal analyzing means 57 Location state change notifying means

Claims (4)

A program information generation / transmission apparatus comprising transmission means for transmitting a digital broadcast wave;
First broadcast receiving means for receiving the digital broadcast wave;
When the first broadcast receiving means detects that the digital broadcast wave received includes an emergency warning broadcast, a CBS transmission that creates a CBS (cell broadcast) signal notifying that the emergency warning broadcast is started Signal generating means,
And a CBS signal transmission device comprising CBS signal transmission means for simultaneously transmitting the CBS signal via a base station,
Second broadcast receiving means for receiving the digital broadcast wave;
CBS signal receiving means for receiving the CBS signal;
CBS signal analyzing means for detecting the type of the CBS signal;
And when this CBS signal analyzing means detects that the CBS signal received by the CBS signal receiving means is a signal notifying the start of emergency warning broadcasting, a power control device for supplying power to the second broadcast receiving means An emergency warning broadcast notification system comprising a mobile phone terminal equipped with First broadcast receiving means for receiving a digital broadcast wave;
When the first broadcast receiving means detects that the digital broadcast wave received includes an emergency warning broadcast, a CBS transmission that creates a CBS (cell broadcast) signal notifying that the emergency warning broadcast is started Signal generating means,
And a CBS signal transmission device comprising CBS signal transmission means for simultaneously transmitting the CBS signal via a base station. A second broadcast receiving means for receiving a digital broadcast wave;
CBS signal receiving means for receiving a CBS signal;
CBS signal analyzing means for detecting the type of the CBS signal;
And when this CBS signal analyzing means detects that the CBS signal received by the CBS signal receiving means is a signal notifying the start of emergency warning broadcasting, a power control device for supplying power to the second broadcast receiving means A mobile phone terminal comprising: When the reception state of the CBS signal is out of the service area, the power control unit includes a state change notification means for notifying that the reception state of the CBS signal is out of service,
4. The power control means that receives a notification that the reception state of the CBS signal is out of service from the in-zone state change notifying means starts supplying power to the broadcast receiving means. Mobile phone terminal.

Images