JP2013077886A - Announcement broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an announcement broadcast receiver capable of receiving an announcement broadcast signal with stability even at disconnection of a transmission line without large-scale facilities.SOLUTION: An announcement broadcast receiver 3 has: a communication part 30 receiving an announcement broadcast signal via a transmission line 91; an antenna 51 wirelessly transmitting the announcement broadcast signal received at the communication part 30 to the other announcement broadcast receiver 3, and receiving the announcement broadcast signal wirelessly transmitted from the other announcement broadcast receiver 3; a detector 31 detecting presence or absence of abnormalities in the transmission line 91; and a controller 38, in the case that the detector 31 detects abnormalities in the transmission line 91, making the communication part 30 transmit to the other announcement broadcast receiver 3 via the antenna 51 a signal indicating that there are abnormalities in the transmission line 91, and in the case that the signal indicating that there are abnormalities is received from the other announcement broadcast receiver 3 via the antenna 51, making the communication part 30 transmit the received announcement broadcast signal to the other announcement broadcast receiver 3 via the antenna 51.

Description

  The present invention relates to a notification broadcast receiver for receiving notification broadcasts.

  Notification broadcasting systems for performing various types of notification broadcasting from a center to a plurality of dwelling units are widespread. This notification broadcasting system is generally configured by connecting a center device arranged on the center side and a receiver installed in each dwelling unit via a transmission line such as CATV. When the local event is held or the general broadcast such as FM radio broadcast or the emergency broadcast when a disaster such as a fire or an earthquake occurs, the center device transmits a notification broadcast signal via the transmission line. The broadcast signal is received by the receiver, and the announcement broadcast is output as sound through a speaker (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 9-8753

  The receiver in this notification broadcasting system cannot receive a notification broadcast signal from the center device if there is an abnormality in the transmission line such as a disconnection of the transmission line. For such a problem, in order to enable the receiver to receive the notification broadcast signal even if there is an abnormality in the transmission line, for example, the notification broadcast signal is transmitted wirelessly from the center device, and It is conceivable to cause the receiver to receive the transmitted notification broadcast signal. In addition, it is considered that a relay facility connected to the center apparatus by a transmission line is provided for each predetermined area, a notification broadcast signal is transmitted wirelessly from the relay facility, and the transmitted notification broadcast signal is received by a receiver. It is done.

  However, the receiver in such a conventional notification broadcasting system has room for improvement with respect to transmitting the notification broadcast signal from the above-described center device or relay facility. For example, when an announcement broadcast signal is wirelessly transmitted from the center device, a radio antenna facility must be newly provided. Also, when an announcement broadcast signal is wirelessly transmitted from the relay facility, a relay facility is provided for each predetermined area. As a result, there is a problem that the equipment cost becomes large. Also, when the broadcast broadcast signal is transmitted wirelessly from the center device, communication failure due to mountains, high-rise buildings, etc. is more likely to occur than when relay facilities are provided for each predetermined area. There was a problem that it became difficult to receive.

  The present invention has been made in view of the above, and is capable of stably receiving an announcement broadcast signal even when there is an abnormality in a transmission line, and does not require large-scale equipment. An object is to provide a broadcast receiver.

  In order to solve the above-described problems and achieve the object, the notification broadcast receiver according to claim 1 is configured to receive a notification broadcast signal via a transmission line, and the reception unit receives the notification broadcast signal. Wireless transmission means for wirelessly transmitting the notification broadcast signal to another notification broadcast receiver, and wireless reception means for receiving the notification broadcast signal wirelessly transmitted from another notification broadcast receiver.

  Further, the notification broadcast receiver according to claim 2 is the notification broadcast receiver according to claim 1, wherein the detection means detects whether there is an abnormality in the transmission line, and the detection means includes the transmission line. When an abnormality is detected, a signal indicating that there is an abnormality in the transmission line is transmitted wirelessly to another notification broadcast receiver by the wireless transmission means, and the wireless reception means is transmitted from another notification broadcast receiver. Control means for wirelessly transmitting the notification broadcast signal received by the reception means to another receiver for notification broadcast by the wireless transmission means when a signal indicating that there is an abnormality in the transmission line is received wirelessly With.

  Further, the notification broadcast receiver according to claim 3 is the notification broadcast receiver according to claim 2, wherein the control means receives the notification broadcast when the reception means receives the notification broadcast signal. It is determined whether or not an emergency broadcast is included in the signal, and if it is included, the notification broadcast signal is wirelessly transmitted to another notification broadcast receiver by the wireless transmission means.

  Further, the notification broadcast receiver according to claim 4 specifies a group address for uniquely identifying whether or not the notification broadcast receiver according to claim 2 is a signal relating to a group to which the broadcast broadcast receiver belongs. Storage means for storing group address information for performing, when the detection means detects an abnormality in the transmission line, the wireless transmission means indicates that there is an abnormality in the transmission line The group address information stored in the storage means is added to the signal and transmitted wirelessly to another notification broadcast receiver. The wireless reception means has an abnormality in the transmission line from the other notification broadcast receiver. When a signal indicating that the transmission line is wirelessly received, whether or not the signal indicating that there is an abnormality in the transmission line is a signal related to the group to which it belongs is indicated. A determination is made based on the group address information added to the signal and the group address information stored in the storage means, and the signal indicating that there is an abnormality in the transmission line is a signal related to the group to which the signal belongs. Causes the notification broadcast signal received by the reception means to be wirelessly transmitted to another notification broadcast receiver by the wireless transmission means.

  Further, the notification broadcast receiver according to claim 5 is the notification broadcast receiver according to claim 4, wherein the control means is configured such that the wireless reception means receives the notification broadcast signal from another notification broadcast receiver. The group address information added to the notification broadcast signal and the group address information stored in the storage means whether or not the notification broadcast signal is a signal related to the group to which the notification broadcast signal belongs. If the notification broadcast signal is a signal related to the group to which the user belongs, the notification broadcast is performed based on the notification broadcast signal.

  According to the notification broadcast receiver of claim 1, the wireless transmission means wirelessly transmits the notification broadcast signal received by the reception means to another notification broadcast receiver, and the wireless reception means transmits the other notification broadcast. Notification broadcast signal transmitted wirelessly from the receiver for the receiver is received, so the broadcast communication of the notification broadcast signal can be performed between the receivers for the notification broadcast, and even if there is an abnormality in the transmission line, the notification broadcast signal is transmitted. It can be received stably. As a result, large-scale facilities such as providing a radio antenna facility in the center device or a relay facility for each predetermined area in order to be able to receive notification broadcast signals even when there is an abnormality in the transmission line. There is no need to add another.

  Further, according to the notification broadcast receiver according to claim 2, when the control means wirelessly receives a signal indicating that there is an abnormality in the transmission line from another notification broadcast receiver, Since the notification broadcast signal received by the reception means is wirelessly transmitted to another notification broadcast receiver by the wireless transmission means, the notification broadcast signal is triggered by the reception of a signal indicating that there is an abnormality in the transmission line. Wireless transmission can be started, and the notification broadcast signal can be wirelessly transmitted quickly after the transmission line is abnormal.

  Further, according to the notification broadcast receiver according to claim 3, when the reception means receives the notification broadcast signal, the control means only when the emergency broadcast is included in the notification broadcast signal. Announcement broadcast signal is transmitted wirelessly to other announcement broadcast receivers by wireless transmission means, so even if there is an abnormality in the transmission line, emergency broadcast based on the announcement broadcast signal is continued via other announcement broadcast receivers Can be done.

  Further, according to the notification broadcast receiver according to claim 4, when the control means wirelessly receives a signal indicating that there is an abnormality in the transmission line from another notification broadcast receiver, Only when the signal indicating that there is an abnormality in the transmission line is a signal related to the group to which the transmission line belongs, the notification broadcast signal received by the reception means is wirelessly transmitted to the other broadcast receivers by the wireless transmission means. Since the transmission is performed, even if there is an abnormality in the transmission line, the notification broadcast of the group to which the user belongs based on the notification broadcast signal can be continuously performed via the other broadcast receivers.

  In addition, according to the notification broadcast receiver of claim 5, when the wireless reception means wirelessly receives the notification broadcast signal from another notification broadcast receiver, the control broadcast means receives the notification broadcast signal. Since the notification broadcast is performed based on the notification broadcast signal only when it is a signal related to the group to which it belongs, even if there is an abnormality in the transmission line, the notification broadcast according to the needs of the user or the like can be performed.

It is a block diagram which shows the structure of the notification broadcasting system which concerns on Embodiment 1. FIG. It is a perspective view which shows the receiver for notification broadcasting which concerns on Embodiment 1 fixed to the installation wall W. FIG. It is a figure which shows the receiver for notification broadcasting which concerns on Embodiment 1, (a) is a front view, (b) is a bottom view. 3 is a flowchart of notification broadcast processing executed by the notification broadcast receiver according to the first embodiment. It is a block diagram which shows the structure of the notification broadcasting system which concerns on Embodiment 2. FIG. 6 is a flowchart of notification broadcast processing executed by the notification broadcast receiver according to the second embodiment.

  Hereinafter, embodiments of a broadcast receiver according to the present invention will be described in detail with reference to the accompanying drawings. First, the overall configuration of the notification broadcast system configured with the notification broadcast receiver will be described, then the configuration of the notification broadcast receiver will be described, and the notification broadcast processing executed by the notification broadcast receiver Finally, a modified example of the present embodiment will be described. However, the present invention is not limited by this embodiment. In addition, although the installation target and application target of the notification broadcast receiver according to each embodiment are arbitrary, the following description is given by taking as an example the case of application to a notification broadcast receiver installed indoors in a dwelling unit. .

[Embodiment 1]
First, the first embodiment will be described. This form is a form in which, when a transmission line connected to another receiver for notification broadcasting has an abnormality, the notification broadcast signal is wirelessly transmitted when a notification broadcast signal including an emergency broadcast is received.

(Constitution)
First, the configuration of the notification broadcasting system according to Embodiment 1 will be described. FIG. 1 is a block diagram showing a configuration of an announcement broadcasting system. As shown in FIG. 1, the notification broadcasting system 1 includes a center device 2 disposed on the center side, a notification broadcast receiver 3 disposed in each dwelling unit, and a signal transmitted from the center device 2 for notification broadcast reception. A transmission system 9 for transmission to the machine 3 is provided. Among these, the center apparatus 2 transmits a notification broadcast signal, and can be configured in the same manner as the known center apparatus 2. The transmission system 9 includes a head end 90, a transmission line 91 extending from the head end 90 to the notification broadcasting receiver 3 of each dwelling unit, and an amplifier 92, a distribution amplifier 93, a distribution disposed in the transmission line 91. A device 94 and a protector 95 are provided. The head end 90 is an amplification transmission unit that receives a signal transmitted from the center apparatus 2, level-amplifies the signal, and sends the signal to the transmission line 91. The transmission line 91 is a transmission line that transmits a notification broadcast signal, and includes, for example, a CATV transmission line (coaxial cable) that transmits a CATV signal. The amplifier 92 is an amplifying unit that amplifies a signal flowing through the transmission line 91. The distribution amplifier 93 is distribution amplification means for amplifying a signal and distributing the amplified signal to each dwelling unit. The distributor 94 is distribution means for distributing the signal amplified by the distribution amplifier 93 toward each dwelling unit. The protector 95 is provided in each dwelling unit and controls a direct current component that reaches the notification broadcast receiver 3 on the transmission line 91. In addition, except the structure which mentions specially, the center apparatus 2, the notification broadcast receiver 3, and the transmission system 9 can be comprised similarly to a well-known apparatus or system.

(Configuration-Notification broadcast receiver)
Next, the electrical configuration of the notification broadcast receiver 3 will be described. As shown in FIG. 1, the notification broadcast receiver 3 includes a communication unit 30, an operation unit 32, an audio switching unit 33, a volume adjustment unit 34, an amplifier 35, a speaker 36, a display unit 37, a control unit 38, audio information. A storage unit 39 and a storage unit 40 are provided.

The communication unit 30 is a receiving unit that demodulates a notification broadcast signal received from the center device 2 via the transmission line 91 and a notification broadcast signal received via the antenna 51 described later, and includes audio information included in the notification broadcast signal. Is output to the audio switching unit 33, and control information included in the notification broadcast signal (for example, information specifying whether the notification broadcast is an emergency broadcast or a general broadcast) is output to the control unit 38. The communication unit 30 receives a radio broadcast signal via an antenna 51 described later, and outputs audio information included in the radio broadcast signal to the audio switching unit 33.
The communication unit 30 includes a detection unit 31. The detection unit 31 is a detection unit that detects whether there is an abnormality in the transmission line 91. As for the specific detection contents of the detection unit 31, for example, the presence or absence of an abnormality in the transmission line 91 is detected by detecting the presence or absence of a carrier wave of an announcement broadcast constantly sent from the center device 2 via the transmission line 91. Here, “abnormality of the transmission line” means that the notification broadcast signal cannot be received via the transmission line 91, for example, the transmission line connected to the receiver 3 for the notification broadcast itself or the other. This corresponds to the fact that the cable 91 is disconnected or the transmission line 91 is not connected to the receiver 3 for self or other notification broadcasting.

  The operation unit 32 is an operation unit that performs a predetermined operation related to the notification broadcast receiver 3. The voice switching unit 33 outputs the voice information output from the communication unit 30 to the volume adjustment unit 34 or the voice information storage unit 39, or outputs the voice information output from the voice information storage unit 39 to the volume adjustment unit 34. Voice switching means. The volume adjusting unit 34 adjusts the volume of the audio information output from the audio switching unit 33 and outputs it to the amplifier 35. The audio information is amplified by the amplifier 35 and then output from the speaker 36. The speaker 36 is output means for outputting sound. The display unit 37 is a display unit that displays information related to the notification broadcast receiver 3.

  The control unit 38 is a control unit that controls each unit of the notification broadcast receiver 3. Specifically, the control unit 38 is a CPU (for example, a microcomputer) and various programs that are interpreted and executed on the CPU (a basic control program such as an OS). And an application program that is activated on the OS and implements a specific function) and an internal memory such as a RAM for storing the program and various control data. Details of the processing executed by the control unit 38 will be described later.

  The audio information storage unit 39 is audio information storage means for storing audio information included in the notification broadcast signal received by the communication unit 30. The audio information stored in the audio information storage means includes, for example, reception date and time information for specifying the date and time when the communication unit 30 received the notification broadcast signal including the audio information, and the audio information after being stored in the audio information storage means. Reproduction information for specifying whether or not the information has been reproduced is added as header information, for example. The storage unit 40 is storage means for recording information necessary for various controls of the notification broadcast receiver 3. The specific configurations of the audio information storage unit 39 and the storage unit 40 are arbitrary, but are configured using a recording medium that can rewrite information. For example, a nonvolatile recording medium such as a flash memory can be used.

  Next, the basic configuration of the notification broadcast receiver 3 will be described. FIG. 2 is a perspective view showing the notification broadcast receiver 3 fixed to the installation wall W. FIG. 3A and 3B are diagrams showing the notification broadcast receiver 3, wherein FIG. 3A is a front view and FIG. 3B is a bottom view. As shown in FIGS. 2, 3 (a), and 3 (b), the notification broadcast receiver 3 is configured by housing various electronic components and the like (not shown) inside a housing 41. The housing 41 is configured by combining a front cover 41a and a back cover 41b. Although the connection method of the front cover 41a and the back cover 41b is arbitrary, for example, the front cover 41a and the back cover 41b can be connected by fitting or screwing.

As shown in FIG. 3A, an operation unit 32 and a display unit 37 are provided on the front surface of the housing 41. Specifically, the operation unit 32 receives a notification reproduction switch 32a that receives an operation input related to the output of audio information stored in the audio information storage unit 39, and an operation input related to the output of audio information included in the radio broadcast signal. A radio playback switch 32b and a volume switch 34a for adjusting the broadcast volume are provided. Further, as the display unit 37, specifically, a power indicator lamp 37a that is turned on when the notification broadcast receiver 3 is turned on, an emergency broadcast indicator lamp 37b that is turned on or blinking in an emergency broadcast, For the control of the flashing general broadcast indicator lamp 37c, the transmission line indicator lamp 37d that lights up or flashes when there is an abnormality in the transmission line 91 connected to itself or another receiver 3 for announcement broadcasting, and the control unit 38. An unillustrated notification reproduction indicator lamp and a radio reproduction indicator lamp which are lit or blinking based on this are provided. These various indicator lamps are configured using, for example, LEDs (Light Emitting Diodes).
In addition, an acoustic hole 42 for releasing sound output from the speaker 36 provided inside the housing 41 to the outside of the housing 41 is provided on the front surface of the housing 41.

  Further, as shown in FIGS. 3A and 3B, an antenna 51 is provided on the left side surface of the housing 41. The antenna 51 is a wireless receiving unit that receives radio waves such as notification broadcast signals and FM radios that are wirelessly transmitted from the other broadcast receivers 3, and wirelessly transmits the notification broadcast signals received from the center device 2. It is also a transmission means. Therefore, even in a situation where the notification broadcast cannot be received from the center device 2, the notification broadcast signal, FM radio, or the like can be received by the antenna 51.

(processing)
Next, notification broadcast processing executed by the notification broadcast receiver 3 according to Embodiment 1 configured as described above will be described. FIG. 4 is a flowchart of notification broadcast processing executed by the notification broadcast receiver 3 according to the first embodiment. In the following description, “step” is abbreviated as “S”. The execution timing of the audio processing is arbitrary. For example, the notification broadcast processing is executed when the notification broadcast receiver 3 is turned on (the same applies to the notification broadcast processing of the second embodiment).

  As shown in FIG. 4, first, the control unit 38 determines whether or not there is an abnormality in the transmission line 91 (SA1). For example, the control unit 38 can detect the carrier wave of the notification broadcast that the detection unit 31 constantly sends from the center device 2 through the transmission line 91 with respect to the specific determination contents as to whether or not the transmission line 91 is abnormal. It is determined whether or not. More specifically, the control unit 38 determines that there is no abnormality in the transmission line 91 when the detection unit 31 can detect the carrier wave, and if there is an abnormality in the transmission line 91 when the detection unit 31 cannot detect the carrier wave. judge.

  Here, when there is no abnormality in the transmission line 91 (SA1, No), the control unit 38 monitors whether or not the communication unit 30 receives any signal (SA2). Here, when the communication unit 30 cannot receive any signal (SA2, No), the control unit 38 shifts to SA1.

  On the other hand, when the communication unit 30 receives any signal (SA2, Yes), the control unit 38 determines whether the communication unit 30 has received a signal indicating that there is an abnormality in the transmission line 91 described later via the antenna 51. Is determined (SA3). Here, when the communication unit 30 receives a signal indicating that there is an abnormality in the transmission line 91 described later via the antenna 51 (SA3, Yes), the control unit 38 stores the signal in the storage unit 40 ( SA4), the transmission line indicator lamp 37d is blinked (SA5). As a result, it is possible to notify the user that there is an abnormality in the transmission line 91 connected to the other broadcast receivers 3. For example, by turning off the broadcast broadcast receiver 3, etc. It is possible to alert the user so as not to disturb the wireless transmission of the broadcast signal. The control unit 38 causes the communication unit 30 to transmit a confirmation signal via the antenna 51 (SA6). Thus, it is possible to notify the notification broadcast receiver 3 that has transmitted the signal that the signal indicating that there is an abnormality in the transmission line 91 described later has been received.

  Next, when the communication unit 30 does not receive a signal indicating that there is an abnormality in a transmission line 91 described later via the antenna 51 (SA3, No), or the communication unit 30 transmits a confirmation signal to the antenna 51 in SA6. In the case of the transmission via the transmission line 91, the control unit 38 determines whether or not the communication unit 30 has received the notification broadcast signal via the transmission line 91 (SA7). Here, when the communication unit 30 does not receive the notification broadcast signal via the transmission line 91 (SA7, No), the control unit 38 shifts to SA1.

  On the other hand, when the communication unit 30 receives the notification broadcast signal via the transmission line 91 (SA7, Yes), the control unit 38 outputs the notification broadcast based on the notification broadcast signal through the speaker 36 (SA8).

  Further, after the processing at SA8, the control unit 38 analyzes the broadcast command included in the notification broadcast signal received at SA7, thereby determining whether or not the emergency broadcast is included in the notification broadcast signal (SA9). . Here, when the emergency broadcast is not included in the notification broadcast signal (SA9, No), the control unit 38 proceeds to SA1.

  On the other hand, when the emergency broadcast is included in the announcement broadcast signal (SA9, Yes), the control unit 38 stores in the storage unit 40 a signal indicating that there is an abnormality in the transmission line 91 described later in SA4. It is determined whether or not (SA10). Here, when the signal which shows that the transmission line 91 mentioned later has abnormality is not memorize | stored in the memory | storage part 40 (SA10, No), the control part 38 transfers to SA1.

  On the other hand, when a signal indicating that there is an abnormality in the transmission line 91 described later is stored in the storage unit 40 (SA10, Yes), the control unit 38 receives the notification broadcast signal received in SA7 via the antenna 51. Transmission is performed by the communication unit 30 (SA11). Thereby, the notification broadcast signal can be transmitted via the antenna 51 triggered by the communication unit 30 receiving a signal indicating that there is an abnormality in the transmission line 91, and after there is an abnormality in the transmission line 91. Thus, the notification broadcast signal can be quickly transmitted by radio. Also, only when the emergency broadcast is included in the notification broadcast signal, the communication unit 30 transmits the notification broadcast signal to another notification broadcast receiver 3 via the antenna 51, so that there is an abnormality in the transmission line 91. Even in some cases, the emergency broadcast based on the notification broadcast signal can be continuously performed via another notification broadcast receiver 3.

  Moreover, in the process of SA1, when there is an abnormality in the transmission line 91 (SA1, Yes), the control unit 38 turns on the transmission line indicator lamp 37d (SA12). Thereby, it can be shown to a user that there is abnormality in transmission line 91, and it can be called out to take some measures to the transmission line 91 concerned. Further, the control unit 38 causes the communication unit 30 to transmit a signal indicating that there is an abnormality in the transmission line 91 via the antenna 51 (SA13). Accordingly, the communication unit 30 of the other notification broadcast receiver 3 notifies the other notification broadcast receiver 3 that has received a signal indicating that there is an abnormality in the transmission line 91 via the transmission line 91. When a broadcast signal is received, it can be instructed to wirelessly transmit the notification broadcast signal.

  Further, after the processing of SA13, the control unit 38 monitors whether or not the communication unit 30 has received the confirmation signal via the antenna 51 (SA14). Here, when the communication unit 30 cannot receive the confirmation signal (SA14, No), the control unit 38 repeats the process of SA14 until a predetermined time (for example, 1 minute) elapses (SA14, SA15, No). . If the communication unit 30 cannot receive the confirmation signal even after the predetermined time has elapsed (SA15, Yes), the control unit 38 proceeds to SA13. By these processes, when the notification broadcast signal cannot be wirelessly received from another notification broadcast receiver 3, a signal indicating that there is an abnormality in the transmission line 91 is repeatedly transmitted. Therefore, the other notification broadcast receiver 3 Thus, it is possible to improve the certainty of wirelessly receiving the notification broadcast signal.

  On the other hand, when the communication unit 30 receives the confirmation signal (SA14, Yes), the control unit 38 monitors whether the communication unit 30 has received the notification broadcast signal via the antenna 51 (SA16). As a result, when the communication unit 30 receives the notification broadcast signal via the antenna 51 (SA16, Yes), the control unit 38 outputs an emergency broadcast based on the notification broadcast signal through the speaker 36 (SA17). Thereby, even when there is an abnormality in the transmission line 91, the notification broadcast signal can be stably received by radio from the other broadcast receivers 3. Then, after the emergency broadcast of SA17 ends, the control unit 38 moves to SA1.

(effect)
As described above, according to the first embodiment, the communication unit 30 transmits the notification broadcast signal received via the transmission line 91 to the other notification broadcast receiver 3 via the antenna 51, so that the other notification broadcast is transmitted. When the notification broadcast signal wirelessly transmitted from the receiver 3 is received via the antenna 51, the notification broadcast signal can be wirelessly communicated between the notification broadcast receivers 3 and the transmission line 91 is abnormal. Even so, the announcement broadcast signal can be stably received. Thereby, even when there is an abnormality in the transmission line 91, in order to be able to receive the notification broadcast signal, the center device 2 is provided with a radio antenna facility or a large-scale installation such as a relay facility for each predetermined area. There is no need to add additional equipment.

  The control unit 38 receives the signal indicating that there is an abnormality in the transmission line 91 from the other broadcast receiver 3 via the antenna 51 and is received via the transmission line 91. Since the notification broadcast signal is transmitted to the other broadcast receiver 3 via the antenna 51, the wireless transmission of the notification broadcast signal is started when the signal indicating that the transmission line 91 is abnormal is received as a trigger. Thus, the notification broadcast signal can be wirelessly transmitted quickly after the transmission line 91 is abnormal.

  In addition, when the communication unit 30 receives the notification broadcast signal via the transmission line 91, the control unit 38 performs the notification in the communication unit 30 only when the notification broadcast signal includes an emergency broadcast. Since the broadcast signal is transmitted to the other broadcast receiver 3 via the antenna 51, even if there is an abnormality in the transmission line 91, the emergency broadcast based on the broadcast broadcast signal is transmitted via the other broadcast receiver 3. It can be done continuously.

[Embodiment 2]
Next, a second embodiment will be described. In the case where there is an abnormality in the transmission line 91 connected to the other broadcast receiver 3 belonging to the same group as the group to which the self belongs, when the broadcast broadcast signal related to the group to which the self belongs is received, This is a mode in which a notification broadcast signal is wirelessly transmitted. The configuration of the second embodiment is substantially the same as the configuration of the first embodiment unless otherwise specified, and the configuration substantially the same as the configuration of the first embodiment is the same as that used in the first embodiment. The same reference numerals and / or names are assigned as necessary, and the description thereof is omitted.

(Constitution)
First, the basic configuration of the notification broadcasting system 1 according to Embodiment 2 will be described. FIG. 5 is a block diagram showing a configuration of the notification broadcasting system 1 according to the second embodiment. As shown in FIG. 5, the notification broadcasting system 1 includes a center device 2 arranged on the center side, a notification broadcasting receiver 3 arranged in each dwelling unit, and a signal transmitted from the center device 2 for announcement broadcasting. The transmission system 9 for transmitting to the receiver 3 is provided. Here, the notification broadcast receiver 3 is basically configured in the same manner as in the first embodiment, but includes a storage unit 40 different from that in the first embodiment.

(Configuration-Notification broadcast receiver)
The storage unit 40 of the notification broadcast receiver 3 will be described. The storage unit 40 is a storage unit that records information necessary for various controls of the notification broadcast receiver 3 as in the first embodiment, and uniquely identifies whether or not the signal relates to a group to which the storage unit 40 belongs. Group address information storage means for storing group address information for specifying a group address to be used.

(processing)
Next, notification broadcast processing executed by the notification broadcast receiver 3 according to Embodiment 2 configured as described above will be described. FIG. 6 is a flowchart of notification broadcast processing executed by the notification broadcast receiver 3 according to the second embodiment. However, SB1-SB3, SB5-SB8, SB10-SB13, and SB15-SB17 in this announcement broadcast processing are the same as SA1-SA8, SA10-SA12, and SA14-SA16 in the processing of the first embodiment shown in FIG. Therefore, the description thereof is omitted.

  As shown in FIG. 6, in the process of SB3, when the communication unit 30 receives a signal indicating that there is an abnormality in the transmission line 91 via the antenna 51 (SB3, Yes), the control unit 38 Whether or not the signal indicating that there is an abnormality in 91 is a signal relating to the group to which the device belongs, the group address information added to the signal indicating that there is an abnormality in the transmission line 91 in the processing of SB14 described later; The determination is made based on the group address information stored in the storage unit 40 (SB4). If the signal indicating that there is an abnormality in the transmission line 91 is not a signal related to the group to which the transmission line 91 belongs (SB4, No), the control unit 38 proceeds to SB8.

  On the other hand, when the signal indicating that there is an abnormality in the transmission line 91 is a signal related to the group to which the transmission line 91 belongs (SB4, Yes), the control unit 38 proceeds to SB5. Thereby, in the process of SB6, the user can be notified that there is an abnormality in the transmission line 91 connected to the other broadcast receivers 3 belonging to the same group as the group to which the user belongs. The user can be alerted so as not to hinder wireless transmission of the notification broadcast signal by turning off the power of the receiver 3 for use.

  In the process of SB8, when the communication unit 30 receives the notification broadcast signal via the transmission line 91 (SB8, Yes), the control unit 38 determines whether the notification broadcast signal is a signal related to the group to which the communication unit 30 belongs. Is determined based on the group address information previously added to the notification broadcast signal by the center device 2 and the group address information stored in the storage unit 40 (SB9). Here, when the notification broadcast signal is not a signal related to the group to which the notification broadcast signal belongs (SB9, No), the control unit 38 proceeds to SB1.

  On the other hand, when the notification broadcast signal is a signal relating to the group to which the notification broadcast signal belongs (SB9, Yes), the control unit 38 proceeds to SB10. Thereby, in the process of SB10, notification broadcast based on the notification broadcast signal can be performed only when the communication unit 30 receives the notification broadcast signal regarding its own group. In addition, in the process of SB12, the wireless transmission of the notification broadcast signal related to the own group is triggered by the reception of a signal indicating that there is an abnormality from another notification broadcast receiver 3 belonging to the same group as the group to which the self belongs. Therefore, the notification broadcast signal can be quickly wirelessly transmitted after the transmission line 91 is abnormal. Also, only when the signal indicating that there is an abnormality in the transmission line 91 is a signal related to the group to which the transmission line 91 belongs, the communication unit 30 receives the notification broadcast signal related to the group to which the communication unit 30 belongs via the antenna 51 for receiving other notification broadcasts. Since it is wirelessly transmitted to the machine 3, even if there is an abnormality in the transmission line 91, the announcement broadcast of the group to which it belongs based on this announcement broadcast signal can be continuously performed via the other broadcast broadcast receivers 3. .

  In the processing of SB 14, the control unit 38 uses the communication unit 30 via the antenna 51 to add a signal indicating that there is an abnormality in the transmission line 91 and its own group information stored in the storage unit 40. Transmit (SB14).

  In the process of SB17, when the communication unit 30 receives the notification broadcast signal via the antenna 51 (SB17, Yes), the control unit 38 determines whether the notification broadcast signal is a signal related to the group to which the communication unit 30 belongs. The center device 2 determines based on the group address information added in advance to the notification broadcast signal and the group address information stored in the storage unit 40 (SB18). Here, when the announcement broadcast signal is not a signal relating to the group to which the broadcast broadcast signal belongs (SB18, No), the control unit 38 proceeds to SB17.

  On the other hand, when the notification broadcast signal is a signal related to the group to which the notification broadcast signal belongs (SB18, Yes), the control unit 38 proceeds to SB19. Thereby, in the process of SB19, when the communication unit 30 receives the notification broadcast signal related to the group to which the communication unit 30 belongs via the antenna 51, only when the notification broadcast signal is a signal related to the group to which the self belongs. Since the notification broadcast based on the notification broadcast signal is performed, even if there is an abnormality in the transmission line 91, the notification broadcast according to the needs of the user or the like can be performed.

(effect)
As described above, according to the second embodiment, the control unit 38 receives the signal indicating that there is an abnormality in the transmission line 91 from the other broadcast receiver 3 via the antenna 51. Only when the signal indicating that there is an abnormality in the transmission line 91 is a signal relating to the group to which the transmission line 91 belongs, the notification broadcast signal received via the transmission line 91 by the communication unit 30 is transmitted via the antenna 51. Since it is transmitted to the other broadcast receivers 3, even if there is an abnormality in the transmission line 91, the broadcast of the group to which it belongs based on the broadcast signal is continued via the other broadcast receivers 3. It can be carried out.

  Further, when the communication unit 30 receives a notification broadcast signal from another notification broadcast receiver 3 via the antenna 51, the control unit 38 only when the notification broadcast signal is a signal related to the group to which the control unit 38 belongs. Since the notification broadcast based on the notification broadcast signal is performed, the notification broadcast according to the needs of the user or the like can be performed even when the transmission line 91 is abnormal.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention can be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved.

(About distribution and integration)
Each electrical component described above is functionally conceptual and does not necessarily need to be physically configured as illustrated. In other words, the specific form of distribution / integration of each part is not limited to the one shown in the figure, and all or a part thereof may be functionally or physically distributed / integrated in arbitrary units according to various loads and usage conditions. Can be configured.

(About notification broadcast processing)
In each of the above-described embodiments, it has been described that the notification broadcast receiver 3 having no abnormality in the transmission line 91 wirelessly transmits the notification broadcast signal to the notification broadcast receiver 3 having an abnormality in the transmission line 91. It is not limited to the processing of the embodiment. For example, the notification broadcast receiver 3 having an abnormality in the transmission line 91 wirelessly receives the notification broadcast signal from the notification broadcast receiver 3 having no abnormality in the transmission line 91, and another notification having an abnormality in the transmission line 91. The broadcast broadcast notification signal may be wirelessly transmitted to the broadcast receiver 3. Thereby, wireless communication of the notification broadcast signal between the notification broadcast receivers 3 becomes possible in a wider area.

Further, in each of the above-described embodiments, when there is an abnormality in the transmission line 91 connected to another notification broadcast receiver 3, the transmission line indicator lamp 37d is blinked, and the own notification broadcast receiver 3 is flashed. Although it has been described that the transmission line indicator lamp 37d is turned on when there is an abnormality in the transmission line 91 connected to, the lighting and flashing may be reversed.
In addition, although it has been described that the transmission line indicator lamp 37d is lit or blinked when there is an abnormality in the transmission line 91 connected to itself or another notification broadcasting receiver 3, for example, there is an abnormality in the transmission line 91. In some cases, the emergency broadcast indicator lamp 37b, the general broadcast indicator lamp 37c, the notification reproduction indicator lamp (not shown), or the radio reproduction indicator lamp (not shown) may be turned on or blinked, or sound may be output from the speaker 36.
Specifically, in the first embodiment, when the emergency broadcast indicator lamp 37b, the general broadcast indicator lamp 37c, the notification reproduction indicator lamp (not shown), or the radio reproduction indicator lamp (not shown) is used, When there is an abnormality in the transmission line 91 connected to the notification broadcast receiver 3), the control unit 38 causes the emergency broadcast indicator lamp 37 b and the general broadcast indicator lamp 37 c to blink simultaneously. Further, in the process of SA12 (when there is an abnormality in the transmission line 91 connected to the own broadcast receiver 3), the control unit 38 simultaneously flashes a notification reproduction indicator lamp and a radio reproduction indicator lamp (not shown). .
Alternatively, when the speaker 36 is used, in the process of SA5, the control unit 38 repeatedly outputs a voice message such as “There is an abnormality in the transmission line of another receiver” on the speaker 36. In the processing of SA12, the control unit 38 repeatedly outputs a voice message such as “There is an abnormality in the transmission line of its own receiver” by the speaker 36.

Further, in each of the above-described embodiments, the processing when the transmission line 91 having an abnormality is restored is arbitrary. For example, in the first embodiment, transmission having an abnormality during the processing of SA13-SA17. When the line 91 is restored, the control unit 38 may shift to SA1.
In this case, the notification broadcast receiver 3 connected to the restored transmission line 91 transmits a restoration signal indicating that the transmission line 91 is restored via the antenna 51 in the communication unit 30, and there is no abnormality. The notification broadcast receiver 3 may stop wireless transmission of the notification broadcast signal by receiving the restoration signal.
Specifically, in the first embodiment, there is no abnormality in the transmission line 91 in the processing of SA1 (SA1, No), and the latest processing history stored in the storage unit 40 is the latest. When there is an abnormality in the transmission line 91 in the process of SA1, the control unit 38 causes the communication unit 30 to transmit a restoration signal via the antenna 51. In the process of SA3, the control unit 38 determines whether the communication unit 30 has received a signal indicating that the transmission line 91 is abnormal or a recovery signal via the antenna 51, and the communication unit 30 determines that the recovery signal Is received via the antenna 51 (SA3, Yes), the restoration signal is stored in the storage unit 40, and the transmission line indicator lamp 37d is turned off. Furthermore, in the process of SA10, the control unit 38 determines that a signal indicating that there is an abnormality in the transmission line 91 is not stored in the storage unit 40. Through the processing as described above, the wireless transmission of the notification broadcast signal can be stopped by using the recovery signal received from the notification broadcast receiver 3 in which the transmission line 91 is abnormal as a trigger. Electric power can be reduced.
However, in the process of SA10, a signal indicating that there is an abnormality received from the plurality of notification broadcast receivers 3, a recovery signal received from the plurality of notification broadcast receivers 3, and an indication of the presence of the abnormality Signal and the address added to the restoration signal (for specific addition of the address, for example, when the notification broadcast receiver 3 wirelessly transmits a signal indicating that there is an abnormality or a restoration signal, When the addresses stored in the storage unit 40 are added to these signals) and the addresses uniquely identifying each of the broadcast receivers 3 are stored in the storage unit 40 in association with each other, a plurality of notification broadcasts If a part of the address of the receiver 3 and a signal indicating that there is an abnormality are stored in association with each other, but the address and the recovery signal are not stored in association with each other, the control unit 38 transmits the transmission line. Signal indicating that an abnormality is determined to be stored in the storage unit 40 to 91, it may be allowed to continue wireless transmission of announcement broadcast signal.

DESCRIPTION OF SYMBOLS 1 Notification broadcast system 2 Center apparatus 3 Notification broadcast receiver 9 Transmission system 30 Communication part 31 Detection part 32 Operation part 32a Notification reproduction switch 32b Radio reproduction switch 33 Voice switching part 34 Volume control part 34a Volume switch 35, 92 Amplifier 36 Speaker 37 display section 37a power indicator lamp 37b emergency broadcast indicator lamp 37c general broadcast indicator lamp 37d transmission line indicator lamp 38 control section 39 audio information storage section 40 storage section 41 housing 41a front cover 41b back cover 42 acoustic hole 51 antenna 90 head end 91 transmission line 93 distribution amplifier 94 distributor 95 protector

Claims (5)

Receiving means for receiving the notification broadcast signal via the transmission line;
Wireless transmission means for wirelessly transmitting the notification broadcast signal received by the reception means to another notification broadcast receiver;
Wireless receiving means for receiving the notification broadcast signal wirelessly transmitted from another broadcast receiver;
Announcement broadcast receiver. Detecting means for detecting the presence or absence of abnormality in the transmission line;
When the detection means detects an abnormality in the transmission line, the wireless transmission means wirelessly transmits a signal indicating that there is an abnormality in the transmission line to another broadcast receiver,
When the wireless reception means wirelessly receives a signal indicating that there is an abnormality in the transmission line from another notification broadcast receiver, the wireless transmission means receives the notification broadcast signal received by the reception means. Control means for wirelessly transmitting to other broadcast receivers;
The notification broadcast receiver according to claim 1. The control means includes
When the reception unit receives the notification broadcast signal, it determines whether or not the broadcast broadcast signal includes an emergency broadcast. If included, the notification broadcast signal is sent to the wireless transmission unit. Wirelessly transmit to other broadcast receivers,
The notification broadcast receiver according to claim 2. Storage means for storing group address information for identifying a group address for uniquely identifying whether or not the signal relates to a group to which the device belongs;
The control means includes
When the detection means detects an abnormality in the transmission line, the wireless transmission means adds the group address information stored in the storage means to a signal indicating that the transmission line is abnormal. Wirelessly transmit to the notification broadcast receiver
When the wireless reception means wirelessly receives a signal indicating that there is an abnormality in the transmission line from another notification broadcast receiver, the signal indicating that the notification broadcast signal cannot be received is a signal related to the group to which the wireless broadcast means belongs. Whether or not there is a notification broadcast signal is determined based on the group address information added to the signal indicating that the notification broadcast signal cannot be received and the group address information stored in the storage means, and the notification broadcast signal is received. When the signal indicating that it is not possible is a signal related to the group to which the device belongs, the notification broadcast signal received by the reception unit is wirelessly transmitted to another notification broadcast receiver by the wireless transmission unit.
The notification broadcast receiver according to claim 2. The control means includes
When the wireless reception means wirelessly receives the notification broadcast signal from another notification broadcast receiver, whether or not the notification broadcast signal is a signal related to the group to which it belongs is added to the notification broadcast signal. Judgment based on the group address information and the group address information stored in the storage means, and when the notification broadcast signal is a signal related to the group to which it belongs, the notification broadcast based on the notification broadcast signal I do,
The notification broadcast receiver according to claim 4.

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