JP2006319687A - Message broadcast system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a message broadcast system for changing a waiting frequency of each message broadcast receiver with a simplified structure, and also realizing the interrupt broadcast. <P>SOLUTION: The message broadcast system comprises a center apparatus 3 and a message broadcast receive. The center apparatus 3 includes a plurality of message broadcast transmitting units 12 for transmitting message broadcast to the message broadcast receiver 16 with respectively predetermined transmitting frequencies, and a center apparatus control unit 4 for controlling the message broadcast transmitting unit 12 and generating the setting data of receiving frequency. The message broadcast receiver 16 includes a receiving unit 22 for receiving the message broadcast and setting data, and a receiver control unit 17 for controlling the receiver 22 to receive the message broadcast with the receiving frequency based on the setting data; and the center apparatus control unit 4 generates the setting data setting correspondence between the identification data of the message broadcast receiver 16 and the receiving frequency, to transmit the setting data from the message broadcast transmitting unit 12 together with the message broadcast. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a notification broadcasting system that performs various types of notification broadcasting from a center to a terminal, and more particularly to a notification broadcasting system that performs a plurality of broadcasts simultaneously using a plurality of frequencies.

Conventionally, an announcement broadcasting system used in an apartment house or a detached house uses, for example, a CATV line for a center device having an announcement broadcast transmission function and an announcement broadcast receiver provided in each apartment house on the terminal side. It is configured to be connected, and various notification broadcasts are performed from the center device to the notification broadcast receiver. Notification broadcasts include emergency broadcasts that have urgency for emergency evacuation and disaster prevention such as natural disasters and fires, general notification broadcasts that do not require urgency, such as communication and guidance for events, There are types such as group announcement broadcasts that select groups and perform announcement broadcasts such as contact by circle. Here, communication between the center device and the notification broadcast receiver is performed at a predetermined frequency set in advance in the center device and the notification broadcast receiver. As such an announcement broadcasting system, there is a system described in Patent Document 1, for example.
Japanese Patent Laid-Open No. 9-8753

  In order to perform a plurality of broadcasts simultaneously, the center apparatus is provided with a plurality of notification broadcast transmitters, each notification broadcast transmitter uses a different frequency, and the notification broadcast receiver is one of the plurality of frequencies. It waits at one frequency and receives the notification broadcast of the standby frequency.

  In this case, in order for an arbitrary notification broadcast receiver from the center device side to receive an announcement broadcast transmitted at a certain frequency, it is determined at which frequency each announcement broadcast receiver is in a standby state. It was necessary to manage with equipment. Alternatively, the center device is provided with a control data transmitter for frequency setting, and the notification broadcast receiver is always on standby at the frequency used by the control data transmitter except when receiving the notification broadcast. The frequency received by each notification broadcast receiver can be specified from the device side.

  However, in the former case, it is necessary to have a configuration for managing the standby frequency of each notification broadcast receiver in the center device, and in the latter case, it is necessary to provide a control data transmitter. The configuration becomes complicated and causes an increase in cost. In the latter case, since the standby frequency cannot be changed unless the notification broadcast is finished, the interrupt broadcast cannot be performed during an emergency broadcast or the like.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a notification broadcasting system in which the standby frequency of each notification broadcast receiver can be changed with a simple configuration and interrupt broadcasting is also possible.

In order to solve the above-described problems, a notification broadcasting system according to the present invention includes a notification device configured by connecting a center device having a notification broadcast transmission function and a notification broadcast receiver for receiving notification broadcasts from the center device. In the broadcasting system,
The center device controls a plurality of notification broadcast transmitters for transmitting the notification broadcast to the notification broadcast receiver at a predetermined transmission frequency, and a center device control for controlling the notification broadcast transmitter and generating reception frequency setting data. And
The notification broadcast receiver includes a reception unit that receives the notification broadcast and setting data, and a receiver control unit that causes the reception unit to receive the notification broadcast at a reception frequency based on the setting data.
The center device control unit generates setting data in which identification data of the notification broadcast receiver is associated with a reception frequency set in the notification broadcast receiver, and the setting data is transmitted from all the notification broadcast transmission units together with the notification broadcast. It is configured to be sent out.

  The notification broadcast system according to the present invention is characterized in that the identification data of the notification broadcast receiver is data set uniquely for each notification broadcast receiver.

  Furthermore, the notification broadcast system according to the present invention is characterized in that the identification data of the notification broadcast receiver is data set uniquely for each group of a plurality of notification broadcast receivers.

  Furthermore, the notification broadcast system according to the present invention is characterized in that the notification broadcast transmission unit transmits the setting data superimposed on the notification broadcast.

In the notification broadcast system according to the present invention, the center device has an operation confirmation broadcast transmission unit, and the operation confirmation broadcast transmission unit constantly transmits an operation confirmation broadcast at a frequency different from each of the notification broadcast transmission units.
The notification broadcast receiver has a changeover switch for switching the reception frequency to the frequency used by the operation check broadcast transmission unit.

  In addition, the notification broadcasting system according to the present invention is configured such that the operation confirmation broadcast transmitted by the operation confirmation broadcast transmission unit is transmitted together with the setting data.

  According to the notification broadcast system of the present invention, the center device includes a plurality of notification broadcast transmission units, and the center device control unit associates the identification broadcast receiver identification data with the reception frequency set in the notification broadcast receiver. Setting data is sent from all notification broadcast transmitters together with the notification broadcast, so that the setting data can be received from all notification broadcast transmitters regardless of the reception frequency of the notification broadcast receiver. Since it is transmitted, it is possible to receive the setting data without fail. Therefore, it is not necessary to manage the standby frequency of each notification broadcast receiver on the center device side, and the reception frequency can be changed with a simple configuration.

  Further, according to the notification broadcasting system according to the present invention, the identification data of the notification broadcast receiver is data set uniquely for each notification broadcast receiver, so that the reception frequency is set for each individual notification broadcast receiver. can do.

  Furthermore, according to the notification broadcasting system according to the present invention, the identification broadcast receiver identification data is data set uniquely for each group of notification broadcast receivers, so that The reception frequency can be set in

  Furthermore, according to the notification broadcast system according to the present invention, the notification broadcast transmission unit transmits the setting data superimposed on the notification broadcast so that the notification broadcast reception unit receives the setting data even during reception of the notification broadcast. Since it can be received, interrupt broadcasting can be performed.

  According to the notification broadcast system of the present invention, the center device has the operation confirmation broadcast transmission unit, and the operation confirmation broadcast transmission unit always transmits the operation confirmation broadcast at a frequency different from that of each notification broadcast transmission unit. The broadcast receiver has a changeover switch for switching the reception frequency to the frequency used by the operation check broadcast transmission unit, so that the connection can be confirmed from the notification broadcast receiver side by operating the changeover switch.

  Further, according to the notification broadcasting system of the present invention, the operation confirmation broadcast transmitted by the operation confirmation broadcast transmission unit is transmitted together with the setting data, so that the setting data is received even when the operation confirmation broadcast is being received. The reception frequency can be set.

  Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a notification broadcasting system in the present embodiment. First, the system configuration in this embodiment will be described. The signal line 1 is a transmission line used for communication between the center side and the terminal side. In this embodiment, a coaxial cable of the CATV system is used. For this reason, a head end 2 is provided on the center side, and a television signal is transmitted from the head end 2 to the terminal side. On the signal line 1, a transmission signal amplifier 29 is provided as appropriate for amplifying the transmission signal. A center device 3 is provided on the center side, which is the head end 2 side, and a plurality of notification broadcast receivers 16 and 16 are connected to the terminal side of the transmission line 1 via branch terminals of the branching device 15. Although four notification broadcast receivers 16 are connected in FIG. 1, the number is not limited to this and may be any number.

  The center device 3 includes a control unit 4 that performs data processing and data transmission control, and a notification broadcast transmission unit 12 that is controlled by the control unit 4 and transmits a notification broadcast to each notification broadcast receiver 16. . The control unit 4 is connected to a display 9, a printer 10, a keyboard 11, and the like for setting broadcast signals. Audio signals from the microphone 13 and the BGM source 33 are transmitted to the notification broadcast transmission unit 12 and FM-modulated. An output from the notification broadcast transmission unit 12 is given to the transmission line 1 via the head end 2.

  Here, the control unit 4 can also transmit a broadcast signal from an audio device such as a tape recorder in addition to an audio signal from the microphone 13 or the BGM source 33. Alternatively, the character data input from the keyboard 11 and displayed on the display 9 can be encoded and transmitted as a broadcast signal. Furthermore, image data based on video input through the display 9 can be appropriately encoded and transmitted as a broadcast signal.

  The control unit 4 causes the notification broadcast transmission unit 12 to transmit, together with the notification broadcast, type data including the type of the notification broadcast and the terminal information that is the target of the notification broadcast, and control information such as broadcast start / end. At this time, the transmission start or broadcast end time of the notification broadcast is read from the calendar circuit 37 and transmitted by voice at the beginning or end of the voice information of the notification broadcast. The calendar circuit 37 may be provided on the notification broadcast receiver 16 side.

  The control information such as type data is set by operating the keyboard 11, and first, it is set whether the notification broadcast to be transmitted is an emergency notification broadcast or a general notification broadcast. Next, the address of the terminal device that is the target of the announcement broadcast is specified. The address designation includes all terminal designation for designating all participating terminals, group designation for designation in units of service areas and apartments, and individual designation for designating individual terminals. The type data added to the announcement broadcast includes an area for designating a unique group address for each group, an area for designating a unique individual address for each announcement broadcast receiver 16, and an area for designating the type of data. included.

  Announcement broadcasts are emergency broadcasts for emergency notification broadcasts to all subscriber terminals, general broadcasts for general notification broadcasts to all subscriber terminals, emergency group broadcasts for emergency notification broadcasts in groups, and general announcement broadcasts in groups. General group broadcasts, emergency individual broadcasts for emergency notification broadcasts to individual terminals, and general individual broadcasts for general notification broadcasts to individual terminals. The emergency notification broadcast is more important than the general announcement broadcast, and the broadcast is more important than the group broadcast or individual broadcast.

  The control unit 4 is also connected to a general telephone network 50, and at a specified time by registering the broadcast date / time, notification contents, broadcast group, etc. in advance from a telephone 51 such as a general home phone or a mobile phone. Announcement broadcasting can be performed automatically.

  Two notification broadcast transmission units 12 are provided, and each transmits a notification broadcast from the control unit 4 to the signal line 1. The notification broadcast transmission unit 12 transmits the notification broadcast using different transmission frequencies. The frequency used by each notification broadcast transmission unit 12 is set in advance in the notification broadcast transmission unit. The control unit 4 can simultaneously transmit two notification broadcasts from each notification broadcast transmission unit 12. That is, simultaneous broadcasting of announcement broadcasting can be performed.

  Next, the notification broadcast receiver 16 provided at the terminal of the transmission line 1 will be described. FIG. 2 shows a block diagram of the notification broadcast receiver 16. As shown in this figure, the notification broadcast receiver 16 includes a receiver 22 that receives and demodulates the notification broadcast transmitted from the center device 3, and a receiver control that performs control based on control information included in the demodulated notification broadcast. A portion 17 is provided. As an output unit for audio information demodulated by the receiving unit 22, an audio amplifier 24 that amplifies audio information and a speaker 25 are provided, and the volume from the speaker 25 is adjusted in front of the audio amplifier 24. A volume adjusting unit 28 is provided.

  Further, the notification broadcast receiver 16 is provided with an audio memory 31 that stores audio information of the received notification broadcast, and a recording unit 30 that stores the notification broadcast in the audio memory 31. When the receiving unit 22 receives the broadcast start data included in the control information from the center device 3, the recording unit 30 receives a recording operation command signal from the receiver control unit 17. Then, a recording process is performed in which the sound information of the notification broadcast output from the receiving unit 22 is converted into recorded data and stored in the sound memory 31.

  Each notification broadcast receiver 16 is in a standby state for any one of the two frequencies used by the notification broadcast transmission unit 12 during normal times when no notification broadcast is received. For example, it is assumed that the notification broadcast receiver 16a is in a standby state of the frequency α used in the notification broadcast transmission unit 12a, and the notification broadcast receiver 16b is in a standby state of the frequency β used in the notification broadcast transmission unit 12b. In this case, when the notification broadcast is transmitted at the frequency α from the notification broadcast transmission unit 12a, the notification broadcast receiver 16a that is in the standby state at the frequency α receives the notification broadcast and is in the standby state at the frequency β. The notification broadcast receiver 16b does not receive the notification broadcast. Conversely, when a notification broadcast is transmitted at the frequency β, the notification broadcast receiver 16b receives the notification broadcast, and the notification broadcast receiver 16a does not receive the notification broadcast.

  In order to set the reception frequency of each notification broadcast receiver 16, the control information transmitted from the notification broadcast transmission unit 12 together with the notification broadcast includes reception frequency setting data. The reception frequency setting data is generated by the control unit 4 and is data in which the identification data of the notification broadcast receiver 16 is associated with the reception frequency set in the notification broadcast receiver 16. The receiver control unit 17 of the notification broadcast receiver 16 that has received the setting data including the identification data of the own device changes the standby frequency based on the setting data.

  As the identification data of the notification broadcast receiver 16, an individual address or a group address used for addressing the type data can be used. When an individual address is used, a reception frequency can be set for each notification broadcast receiver 16. When the group address is used, the reception frequency of the notification broadcast receiver 16 can be set for each group. Individual addresses and group addresses can also be mixed.

  The reception frequency setting data is transmitted from all the notification broadcast transmission units 12 together with the notification broadcast. That is, in the present embodiment, the same setting data is transmitted from both the notification broadcast transmission unit 12a and the notification broadcast transmission unit 12b. As a result, the reception frequency setting data can be received regardless of the standby frequency state of the notification broadcast receiver 16 whose reception frequency is to be changed.

  For example, in the above-described example, when the notification broadcast receiver 16a wants to receive a notification broadcast transmitted at the frequency β, the center device 3 cannot detect at which frequency the notification broadcast receiver 16a is waiting. Therefore, the control unit 4 generates reception frequency setting data in which the individual address of the notification broadcast receiver 16a is associated with the frequency β, and this is generated together with the notification broadcast from both the notification broadcast receiver 16a and the notification broadcast receiver 16b. Send it out. When the notification broadcast receiver 16a is in a standby state at the frequency α, the notification broadcast receiver 16a receives setting data from the notification broadcast transmission unit 12a transmitted at the frequency α. The receiver control unit 17 detects that the individual address of the own device is included in the setting data, and changes the standby frequency to the frequency β based on the setting data. Thereby, the notification broadcast receiver 16a receives the notification broadcast transmitted at the frequency β.

  The control information including the notification broadcast and reception frequency setting data is ASK (amplitude shift keying) modulated by the notification broadcast transmission unit 12 and transmitted. Since the notification broadcast and the control information can be transmitted in a superimposed manner, the setting data can be received even when the notification broadcast receiver 16 is receiving the notification broadcast. Therefore, by changing the setting data of the reception frequency included in the control information, even if the notification broadcast receiver 16 is receiving the notification broadcast, the interrupt broadcast at a different frequency can be performed.

  Further, in the notification broadcasting system of this embodiment, the operation confirmation when the notification broadcast receiver 16 is installed in the home can be performed from the notification broadcast receiver 16 side. As shown in FIG. 1, in addition to the two notification broadcast transmission units 12a and 12b, an operation confirmation broadcast transmission unit 14 is connected to the control unit 4. The operation confirmation broadcast transmission unit 14 transmits the operation confirmation broadcast using a frequency different from that of the other notification broadcast transmission units 12. The control unit 4 causes the operation confirmation broadcast transmission unit 14 to constantly transmit the operation confirmation broadcast. It is assumed that the operation confirmation broadcast always flows BGM from the BGM source 33. However, the present invention is not limited to this, and other contents may be broadcast.

  As shown in FIG. 2, a changeover switch 18 is connected to the receiver control unit 17 of the notification broadcast receiver 16. When the changeover switch 18 is operated, the receiver control unit 17 changes the reception frequency of the reception unit 22 to the frequency used by the operation confirmation broadcast transmission unit 14 and receives the operation confirmation broadcast. Thereby, the operation confirmation when the notification broadcast receiver 16 is installed can be performed on the notification broadcast receiver 16 side.

  Also, the control unit 4 of the center device 3 causes the operation confirmation broadcast transmission unit 14 to transmit the reception frequency setting data together with the operation confirmation broadcast, similarly to the other notification broadcast transmission units 12. Thereby, even if the notification broadcast receiver 16 is receiving the operation confirmation broadcast, the setting of the reception frequency can be changed.

  Although the embodiment of the present invention has been described above, the application of the present invention is not limited to this embodiment, and can be variously applied within the scope of the technical idea. For example, the number of notification broadcast transmission units 12 is not limited to two, and more may be provided to transmit notification broadcasts at different frequencies. Even in this case, by sending the reception frequency setting data from all the notification broadcast transmitters 12, the standby frequency can be changed regardless of the frequency at which the notification broadcast receiver 16 is waiting.

It is a block diagram which shows the structure of the notification broadcasting system in this embodiment. It is a block diagram which shows the structure of a notification broadcast receiver.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Transmission line 3 Center apparatus 4 Control part 12 Notification broadcast transmission part 14 Operation | movement confirmation broadcast transmission part 16 Notification broadcast receiver 17 Receiver control part 18 Changeover switch 22 Reception part

Claims (6)

In a notification broadcast system configured by connecting a center device having a notification broadcast transmission function and a notification broadcast receiver for receiving notification broadcasts from the center device,
The center device controls a plurality of notification broadcast transmitters for transmitting the notification broadcast to the notification broadcast receiver at a predetermined transmission frequency, and a center device control for controlling the notification broadcast transmitter and generating reception frequency setting data. And
The notification broadcast receiver includes a reception unit that receives the notification broadcast and setting data, and a receiver control unit that causes the reception unit to receive the notification broadcast at a reception frequency based on the setting data.
The center device control unit generates setting data in which identification data of the notification broadcast receiver is associated with a reception frequency set in the notification broadcast receiver, and the setting data is transmitted from all the notification broadcast transmission units together with the notification broadcast. An announcement broadcasting system characterized by sending out.   2. The notification broadcasting system according to claim 1, wherein the identification data of the notification broadcast receiver is data set uniquely for each notification broadcast receiver.   2. The notification broadcasting system according to claim 1, wherein the identification data of the notification broadcast receiver is data set uniquely for each group of a plurality of notification broadcast receivers.   The notification broadcast system according to any one of claims 1 to 3, wherein the notification broadcast transmission unit transmits the setting data superimposed on the notification broadcast. The center device has an operation confirmation broadcast transmission unit, and the operation confirmation broadcast transmission unit constantly transmits an operation confirmation broadcast at a frequency different from each of the notification broadcast transmission units.
The notification broadcast system according to any one of claims 1 to 4, wherein the notification broadcast receiver includes a changeover switch that switches a reception frequency to a frequency used by the operation check broadcast transmission unit.   6. The notification broadcast system according to claim 5, wherein the operation confirmation broadcast transmitted by the operation confirmation broadcast transmission unit is transmitted together with the setting data.

Images