JP2003318848A - Method, device and program for controlling broadcast - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To control in-network broadcast. <P>SOLUTION: Transmission system information as a pattern indicating from which transmitter 2 to which receiver 3 a voice packet is transmitted is previously registered in a broadcast controller 1. In addition, combination of a plurality of frequently used receivers 3 is registered as an output group and the output group is used in the case of registration of the transmission system information. When event generation information indicating start of broadcast is received from the transmitter 2 via a network 10, the broadcast controller 1 informs the transmitter 2 by which the broadcast event generation information is transmitted of an address of a receiver 3 as a transmitting destination of the voice packet according to the registered transmission system information. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast control method, a broadcast control device, and a broadcast control program for digital private broadcasting using a receiving device and a transmitting device connected to a network.

[0002]

2. Description of the Related Art When a plurality of sound sources are connected to any of a plurality of speakers to perform a private broadcast (hereinafter referred to as multi-system private broadcast), for example, as disclosed in Japanese Patent Laid-Open No. 10-303836, a matrix is disclosed. A general method is to control the connection between the sound source and the speaker using a circuit.

FIG. 16 (a) is an overall configuration diagram of a conventional network private branch broadcasting system using a matrix circuit. This system includes input devices 1a to 1c such as a CD player and a microphone, amplifiers 2a to 2c, analog / digital (A / D) converters 3a to 3c, a broadcast control device 4, and digital / analog (D / A). ) Converters 5a to 5c, amplifiers 6a to 6c, and speakers 7a to 7c. The broadcast control device 4 includes a matrix circuit 4
0, a CPU 41, and a memory 42. The matrix circuit 40 has input lines 46a to 46c, output lines 47a to 47c, and bus lines 48a to 48c. The A / D converters 3a ...
c, D / A converters 5a ...
c is connected. The bus lines 48a to 48c are provided between the input lines 46a to 46c and the output lines 47a to 47c. Switches (not shown) are provided at the intersections of the input lines 46a-c and the output lines 47a-c and the bus lines 48a-c. The CPU 41 controls switching of this switch. In the memory 42, it is determined which of the speakers 7a to 7c the input devices 1a to 1c are connected to.
It is memorized as a pattern for every ~ c. Then, when a broadcast start event occurs such that the input devices 1a to 1c start operating, the CPU 41 reads a pattern corresponding to the operating input devices 1a to 1c from the memory 42, and the pattern is designated. The switches are controlled so as to connect the operating input devices 1a to 1c to the speakers 7a to 7c. As a result, the audio signals from the input devices 1a to 1c are amplified by the speakers 7a to 7c.

On the other hand, in recent years, a network premises broadcasting system has been proposed in which a voice signal input from an input device is assembled into a voice packet and transmitted. FIG. 16 (b) shows
FIG. 1 is an overall configuration diagram of a network premises broadcasting system. This network private broadcasting system includes an input device 1, an amplifier 2, a transmitting device 3, a network 4 such as a LAN or an intranet, a receiving device 5, an amplifier 6, and a speaker 7. The transmitter 3 assembles the voice signal input from the input device 1 into a voice packet,
It transmits to the receiving device 5. The receiving device 5 receives the voice packet, decomposes it, and reconstructs it into digital voice data. The digital voice data is converted into an analog voice signal, amplified by the amplifier 6, and then amplified by the speaker 7.

[0005]

In the network private broadcasting system, each voice packet transmitted from the transmitter 3 describes the address of the receiver 5 which is the destination of the packet. Each receiving device 5 receives only the packet addressed to itself. Therefore, the above-mentioned JP-A-10-30383
The broadcast control device 4 described in Japanese Unexamined Patent Publication No. 6 is not necessary for the network local area broadcast system, and wiring can be simplified and system construction can be simplified. However, in the network private broadcasting system, an input device 1
No means has yet been provided for realizing so-called multiple broadcasting, in which a combination of an audio signal input to the speaker and a speaker 7 as an output destination of the audio signal is freely selected for broadcasting.

It is an object of the present invention to provide a technique for performing multiple broadcasting in a network private broadcasting system.

[0007]

In order to solve the above problems, the first invention of the present application provides a broadcast control method used in a computer connected to a transmission device and a reception device via a network. The method includes the following steps. From the first transmitter included in the transmitter,
On the network, a first broadcast event receiving step of receiving a first broadcast event occurrence notification indicating the start of voice transmission, and a receiving device which is a voice packet transmission destination of the first transmission device (hereinafter referred to as a first transmission destination) A first determining step of determining a receiving device identifier that is uniquely identified, and a first transmission destination notifying step of notifying the first transmitting device of the receiving device identifier.

The transmitting device is connected to an input device such as a CD player, a microphone, a radio, a cable broadcasting receiver for inputting an audio signal to the transmitting device, and assembles an audio packet from the input audio signal. When detecting the start of voice input, the transmitting device transmits a broadcast event occurrence notification to the computer via the network. The voice input is started, for example, when the CD player starts playing the voice, or the talk switch provided in the microphone,
This can be detected by detecting a control signal indicating that a sound source selection switch such as a radio broadcasting switch or a cable broadcasting switch provided on the broadcasting console is pressed. First
When the broadcast event occurrence notification transmitted from the transmission device is received, the reception device identifier of the reception device to which the audio packet of the first transmission device is transmitted is determined. The receiving device identifier is, for example, a network address. This receiving device identifier is notified to the first transmitting device.

The first transmitter transmits a voice packet addressed to the receiver specified by the notified receiver identifier.
The receiving device decomposes the voice packet addressed to itself and outputs the voice to the speaker. In this way, the first transmitting device can transmit the audio packet to the receiving device specified by the notified receiving device identifier, and the multiple broadcasting in the network private broadcasting system becomes possible.

The second invention of the present application is the same as the first invention.
The method further includes a transmission destination selection reception step of receiving a selection of a reception device as a transmission destination, and a transmission source selection reception step of receiving a selection of the first transmission device as a transmission source, wherein the determination is based on the selected reception device. A broadcasting control method performed is provided.

The selection of the receiving device as the transmission destination of the voice packet is accepted. Further, the selection of the first transmission device as the voice packet transmission source is accepted. The selection of the receiving device is performed by turning on / off a switch or a button for selecting a broadcast destination such as "classroom", "gymnasium", "schoolyard". Similarly, the selection of the first transmitter is the first
A "microphone," which is a sound source connected to the transmitter
This is performed by turning on / off switches and buttons for selecting "CD player", "radio", and the like. Here, the first transmitting device may be configured to transmit the broadcast event occurrence notification when the switch or button for selecting the sound source is turned on / off. The receiving device identifier notified to the first transmitting device is determined based on the transmission destination selected by turning on / off a switch or a button.

As described above, it is possible to freely select a destination of a voice packet from a certain sound source by operating a button or the like. In a third invention of the present application, in the first invention, one or more combinations of a transmission device identifier that uniquely identifies a transmission device that is a transmission source on the network and a reception device identifier of a reception device that is a transmission destination (hereinafter, The transmission system information storing step of storing transmission system information defining a transmission system) is included, and in the determining step, at least one transmission system having the first transmission device as a transmission source is based on the transmission system information. Then, the receiver identifier of the receiver that is the destination of the voice packet of the first transmitter is selected.

Transmission system information defining a transmission system, which is a combination of a transmission device identifier of a transmission source and a reception device identifier of a transmission destination, is stored. This transmission system information is stored in, for example, a database. Then, a transmission system whose transmission source is the first transmission device is selected based on the transmission system information,
The receiver identifier included in this transmission system is notified to the first transmitter.

The fourth invention of the present application is the same as the above-mentioned third invention.
The transmission system information further provides a broadcast control method further including priority information indicating a priority of the transmission system. When receiving device identification information included in different transmission system information conflicts,
The transmission system with the higher priority is prioritized. That is, the competitive receiving device identifier is notified as the broadcast destination to the transmitting device of the transmission system having the higher priority.

The fifth invention of the present application is the same as the above-mentioned third invention.
A group selection receiving step of receiving a selection of a receiving device identifier group consisting of a plurality of receiving device identifiers included in the receiving device identifier, a group identifier for identifying the receiving device identifier group, and a receiving device included in the receiving device identifier group And a group storing step of storing the identifier in association with each other, and the transmission destination selection receiving step provides a broadcast control method of further receiving the selection of the group identifier as a transmission destination.

If the reception identifiers are grouped, the transmission destination can be selected in group units. For example, the reception identifiers of a plurality of receiving devices in a classroom of an elementary school, a plurality of receiving devices in a schoolyard, and a plurality of receiving devices in a gym are grouped as "classroom", "schoolyard", and "gym hall", respectively. If you make it, you can select this group as the destination to send voice packets,
It becomes easier to select the destination.

A sixth invention of the present application provides the broadcast control method according to any one of the third to fifth inventions, further comprising an updating step of receiving an update of the transmission system information. In a seventh aspect of the present invention based on the third aspect, the computer is connected to an operating device for operating the transmitting device via the network, and receives an operation notification including operation identification information from the operating device. An operation notification receiving step, a transmission system selection information receiving step of receiving an input of transmission system selection information that associates the operation identification information with the transmission system information, and a transmission system selection information storing step of storing the transmission system selection information. Further comprising a third transmission system selection step of selecting transmission system information corresponding to the operation identification information included in the received operation notification based on the transmission system selection information, in the first destination notification step. , The receiving device identifier of the transmission destination in the transmission system information selected in the third transmission system selection step is set to the first transmission. To provide a broadcast control method to notify the location.

The operating device is, for example, a publicly-known public broadcasting console. To operate the operating device means, for example, that the operating device is provided with buttons and switches, each of which is associated with one or a plurality of transmission systems. This is to make the transmission system that is the transmission destination available. Here, a certain button or switch is associated with one or more transmission systems by, for example, an R provided in a computer or an operating device.
It is performed by a table or the like stored in AM or ROM.

In this way, by operating the operating device, the broadcast destination,
That is, the destination of the voice packet can be designated. The eighth invention of the present application is, in the third invention, a plurality of combinations of a transmission system information group that defines a transmission system group including at least one transmission system and a use condition that is a condition under which the transmission system information group is used. A group use condition storing step for storing the use condition, a detection step for detecting a change in the use condition, and a new use condition including a transmission system used in the first transmission system selection step based on the detected change in the use condition. And a transmission system information group selecting step of selecting one of the transmission system information groups corresponding to the transmission system information group included in the transmission system information group selected in the transmission system information group selecting step. There is provided a broadcast control method based on.

The change in the use condition means, for example, that a certain time or day has come, or that the button of the fire alarm has been pressed. When a change in the usage condition of the transmission system information group is detected, the transmission system information group corresponding to the changed usage condition is used. As a result, for example, in the event of a fire, the entire building can be broadcast only from the microphone installed at the disaster prevention center, or at night, only the speakers installed indoors can be used for broadcasting. A suitable transmission system can be used.

The ninth invention of the present application is the third invention or the fourth invention.
In the invention, a pre-fetching / post-fetching selection receiving step of receiving selection of pre-empty transmission or post-posting transmission, and receiving a second broadcast event occurrence notification indicating the start of audio transmission from a second transmitting device included in the transmitting device. 2 broadcast event receiving step, and at least one transmission system having the second transmission device as a transmission source is selected based on the transmission system information, and a voice packet transmission destination of the second transmission device (hereinafter referred to as a second transmission destination). A second determining step of determining the receiving device identifier of the receiving device, and whether or not there is a duplicate destination that is a destination included in both the first destination and the second destination. In the duplication determination step of judging, and when the duplicate transmission destination exists and the post-delivery transmission is selected, the duplication destination from the receiving device identifier of the duplicate transmission destination or the first transmission destination The re-notification step of notifying the receiving device identifier of the excluded first non-overlapping transmission destination to the first transmission device, and the second transmission according to the existence of the duplicate transmission destination and the selection of the preemptive transmission or the post-delivery transmission A second transmission destination notifying step of notifying the second transmission device of the reception device identifier of the first reception device identifier or the reception device identifier of the second non-duplication transmission destination excluding the duplicate transmission destination from the second transmission destination. Provide a control method.

When the duplicate transmission destination exists and the post-delivery transmission is selected, for example, the reception device identifier of the duplicate transmission destination is set to the first transmission device and the reception device of the second transmission destination is set to the second transmission device. Make sure that the identifier is notified. This way, the first
Based on the receiving device identifier of the duplicate transmission destination notified to the transmitting device, it is possible to stop the voice packet transmission to the duplicate transmission destination among the already performed voice packet transmissions. Therefore, even if a voice packet is transmitted from the second transmission device to the second transmission destination based on the reception device identifier of the second transmission destination notified to the second transmission device, the voices of the first transmission device and the second transmission device are transmitted. There is no competition for packet transmission. Alternatively, when the duplicate transmission destination exists and the post-delivery transmission is selected, the reception device identifier of the first non-duplication transmission destination obtained by excluding the duplicate transmission destination from the first transmission destination is the second transmission device in the second transmission device. The receiving device is notified of the receiving device identifier of the second transmission destination. With this configuration, the first transmitting device can perform voice packet transmission to the first non-overlapping destination, and the second transmitting device can perform voice packet transmission to the second destination. Also, the voice packet transmissions of the second transmitting device do not conflict with each other.

On the other hand, when a duplicate transmission destination exists and preemptive transmission is selected, for example, in the second transmission device, the receiving device identifier of the second non-duplication transmission destination excluding the duplicate transmission destination from the second transmission destination. To be notified. With this configuration, it is possible to continuously perform the voice packet transmission from the first transmission device to the first transmission destination and to perform the voice packet transmission from the second transmission device to the second non-overlapping transmission destination.

Further, when there is no duplicate transmission destination, the second transmission device is notified of all of the reception device identifiers of the second transmission destination regardless of selection of pre-emption or post-fetching, for example. With this configuration, it is possible to perform voice packet transmission from the second transmission device to the second destination while maintaining the voice packet transmission from the first transmission device to the first destination as it is.

The tenth invention of the present application provides a broadcast controller connected to a transmitter and a receiver via a network. This device includes the following means. A first broadcast event receiving unit that receives a first broadcast event occurrence notification indicating the start of audio transmission from a first transmitter included in the transmitter, and a receiver that is a voice packet destination of the first transmitter. A first determining unit that determines a receiving device identifier that is uniquely identified on the network, and a first destination notifying unit that notifies the first transmitting device of the receiving device identifier.

The eleventh invention of the present application provides a broadcast control program for causing a computer connected to a transmitter and a receiver via a network to function. This program causes the computer to function as the following means. A first broadcast event receiving unit that receives a first broadcast event occurrence notification indicating the start of audio transmission from a first transmitter included in the transmitter, and a receiver that is a voice packet destination of the first transmitter. First determining means for determining a receiving device identifier that is uniquely identified on the network,
And a first destination notifying means for notifying the first transmitter of the receiver identifier.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION <First Embodiment> (1) Overall Configuration FIG. 1 is an overall configuration diagram of a network private branch broadcasting system according to a first embodiment. In this network premises broadcasting system, a broadcasting control device 1 and transmitting devices 2a to i
And the receiving devices 3a to 3j and the operating devices 4a to 4k are
It is connected with a unique address on the network 10 such as N or an intranet. The unique address is, for example, an IP address.

The broadcast control device 1 can be realized by using a computer. A sensor 5 such as a fire alarm or a gas detector is connected to the broadcast control device 1 via an RS-232C or the like, or a network 10. Broadcast controller 1
Has a management DB 100, a module group 110, a transmission / reception unit 120, and a memory 130. Management DB1
00 and the module group 110 will be described in detail later. The transmission / reception unit 120 is an interface between the network 10 and the broadcast control device 1. The memory 130 temporarily stores data necessary for the module group 110 to perform processing.

Amplifiers 6a are connected to the arbitrary transmitter 2a in a one-to-one relationship. An input device 7a such as a microphone or a CD player is connected to the amplifier 6a in a one-to-one relationship. When the input device 7a starts operating, the control signal is transmitted to the transmitter 2a. When the transmitter 2a receives the control signal, the transmitter 2a sends a broadcast event occurrence notification to the broadcast controller 1
Send to. This broadcast event occurrence notification includes information indicating the address of the transmitter 2a. After that, the transmitter 2a assembles the input voice signal into a voice packet and transmits it to the receiver 3. The broadcast control device 1 notifies the destination address of the audio packet.

Amplifiers 8a are connected to the arbitrary receiving device 3a in a one-to-one relationship. The receiving device 3a receives the voice packet addressed to itself, converts it into an analog voice signal, and outputs it to the amplifier 8a. The optional amplifier 8a includes a speaker 9a
Are connected one to one. The amplifier 8a is the receiver 3
It amplifies the analog audio signal from and outputs it to the speaker 9a. The speaker 9a receives and outputs the analog audio signal.

The optional operation device 4a includes an operation notification section 41a.
And an operation unit 42a. The operation unit 42a corresponds to one or a plurality of transmission systems and receives an operation for selecting a broadcast destination in which a certain one input device 7 is a sound source. For example, a button for selecting "classroom", "gymnasium", "schoolyard", etc. (hereinafter referred to as broadcast destination selection button)
The operation by pressing is accepted. Here, the transmission system means any one of the transmitting devices 2 and at least one receiving device 3.
The correspondence between the operation unit 42a and the transmission system is stored in the broadcast control device 1. Then, the operation notification unit 41a transmits an operation notification to the broadcast control device 1 when the operation is performed. Upon receiving the operation notification, the broadcast control device 1 enables broadcasting by the transmission system. The operation notification includes information that uniquely identifies the operating device 4a, for example, the address of the operating device 4a, and information that uniquely identifies the operating unit 42a, such as a button ID. It should be noted that one operating device 4a may be provided with a plurality of operating sections 42a. In this case, it is possible to simultaneously operate the plurality of operation units 42a and simultaneously select a plurality of broadcast destinations.

The sensor 5 has, for example, a publicly known smoke detection function (not shown), and when it detects smoke, it issues an alarm notification to the broadcast control device 1. (2) Management DB Next, information stored in the management DB 100 of the broadcast control device 1 will be described. The management DB 100 includes an input system table 1001, an output system table 1002, an output group table 1003, and a transmission system table 100.
4 and a transmission system selection table 1005 are stored. 2 to 4 are conceptual explanatory diagrams of information stored in these five types of tables.

FIG. 2A shows an input system table 1001.
It is a conceptual explanatory view of the information accumulated in. The input system table 1001 stores the identification information of the transmission devices 2a to 2i. Specifically, the input system table 1001 stores input IDs and transmission device addresses in a one-to-one correspondence. The input ID is information for the broadcast controller 1 to uniquely identify the transmitters 2a to 2i. The transmission device address is an address of the transmission devices 2a to 2i on the network 10. The input device name, for example, the microphone 1 may be associated with the input ID and the transmission device address and further stored.

FIG. 2B shows an output system table 1002.
It is a conceptual explanatory view of the information accumulated in. The output system table 1002 stores the identification information of the receiving devices 3a to 3j. Specifically, in the output system table 1002, output IDs and receiving device addresses are stored in one-to-one correspondence. The output ID is information for the broadcast control device 1 to uniquely identify the receiving devices 3a to 3j. The receiving device address is an address of the receiving devices 3a to 3j on the network 10. The speaker name corresponding to the receiving device, for example, the first floor speaker 1 may be further stored in association with the output ID and the receiving device address.

FIG. 2C shows the output group table 10
It is a conceptual explanatory view of the information accumulated in 03. The output group table 1003 defines an output group including a plurality of receiving devices 3. Specifically, the group table 1003 includes a group ID and a plurality of output IDs.
And are associated and accumulated. The group ID is information for uniquely identifying the output group.
The group ID corresponds to the output ID of the transmission device 2 forming the output group specified by the group ID. Output group names such as "classroom", "schoolyard", "gymnasium", etc. may be further accumulated in association with the group ID.

FIG. 3 is a conceptual explanatory diagram of information stored in the transmission system table 1004 (transmission system group). The transmission system table 1004 stores transmission system information defining a transmission system. Transmission system table 100
4, a table ID for uniquely identifying the transmission system table 1004 and transmission system information are stored in association with each other. The transmission system information includes the transmission system ID and
The input ID, the output ID, the broadcast priority, and the system selection flag are included. The transmission system ID is information for the broadcast control device 1 to uniquely identify the transmission system. Therefore,
If a certain transmission system ID is designated, a combination of a certain transmission device 2 and one or a plurality of reception devices 3 is uniquely determined.
The transmission system name, for example, the transmission system 1 may be included in the transmission system information and stored. The broadcast priority is information for determining which transmission system is to be preferentially used when the output IDs of the different transmission systems compete with each other as a result of being simultaneously used. In the present embodiment example, the transmission system with the larger broadcast priority number is preferentially used. In the present embodiment example, a plurality of transmission system tables 1004 are managed D
It is stored in B100. The table ID is "T01"
The transmission system table is stored for normal use, the transmission system table with the table ID “T02” is stored for emergency use, and one of the transmission system tables is selected as a table to be used according to the situation.

The system selection flag is a flag used to indicate the transmission system in use. When the system selection flag is on, it indicates that the transmission system is selected. It is assumed that all system selection flags of the transmission system information that do not correspond to any of the operation units 42 are turned on. FIG. 4 is a conceptual explanatory diagram of information stored in the transmission system selection table 1005. The transmission system selection table 1005 associates the operation unit 42 of the controller device 4 with the transmission system. Specifically, in the transmission system selection table 1005, the operation device address, the button ID for identifying the operation unit 42 provided in the operation device 4, and the transmission system I.
D is associated and accumulated. Here, FIG.
As shown in, the button ID and the transmission system ID may correspond one-to-one, or one button ID and a plurality of transmission system IDs may correspond.

(3) Module Group Referring again to FIG. 1, the module group 11 of the broadcast controller 1
The function of 0 will be described. The module group 110 includes a registration module 1101 and a system selection module 1102.
A table switching module 1103 and a notification module 1104.

The registration module 1101 has a management DB 10
Input of information accumulated in each table of 0 is accepted and registered in the management DB 100. System selection module 1102
Accepts the selection of the transmission system information by the operation of the operation device 4, and updates the system selection flag of the transmission system table 1004. The table switching module 1103 detects a switching event, for example, an alarm notification transmitted from the sensor 5, and the management table 130 stored in the memory 130.
The table switching flag of 1 is updated. Management table 13
01 is created in the memory 130 in advance by the table switching module 1103. FIG. 5 shows the management table 1.
It is a conceptual explanatory diagram of 301. The management table 1301 stores a table ID and a table switching flag in association with each other. If the table switching flag is ON, it indicates that the transmission system table is being used.
This flag is turned on / off by the table switching module 1103. In the present embodiment, the table switching flag having the table ID “T01” is set to ON by default. The transmission system is selected from the transmission system table in which the table switching flag is on. The notification module 1104 notifies the receiving device 3 that is the transmission destination of the audio packet to any transmitting device 2a that has transmitted the broadcast event occurrence notification.
Notify the address of.

[Screen Example] FIGS. 6 to 10 show the broadcast controller 1.
3 is an example of a screen displayed on a display (not shown) connected to the computer. The user of the broadcast control device 1 operates the broadcast control device 1 according to the displayed screen. Figure 6
It is an example of a menu screen. In this screen, "Input system registration", "Output system registration", "Output group registration",
Buttons of "transmission system registration" and "transmission system selection registration" are displayed. Click "Register Input System"
The input system registration screen of (a) is displayed. When “Register output system” is pressed, the output system registration screen of FIG. 7B is displayed. When "register output group" is pressed, the output group registration screen of FIG. 8 is displayed. Click "Register transmission system"
The transmission system registration screen of is displayed. When "Transmission system selection registration" is pressed, the transmission system selection registration screen of FIG. 10 is displayed.

The input system registration screen of FIG. 7A is a screen for accepting registration of information in the input system table 1001. This screen receives the input of the input ID and the transmission device address. When the “Register” button is pressed, the input ID and the transmitter address entered in the text box are stored in association with each other in the input system table 1001. When the "end" button is pressed, the screen returns to the menu screen of FIG.

The output system registration screen of FIG. 7B is a screen for accepting registration of information in the output system table 1002. This screen accepts the input of the output ID and the receiving device address in the text box. When the "Register" button is clicked, the output ID entered in the text box
And the receiver address are stored in the output system table 1002. When the "end" button is pressed, the screen returns to the menu screen of FIG.

FIG. 8 shows an example of the output group registration screen. This screen accepts registration of information in the output group table 1003. On this screen, a table having a plurality of cells arranged vertically and horizontally is displayed. A group ID is displayed in each cell in the top row of this table. The group ID displayed in this row is the registration module 100
Although it is uniquely given by 1, the user may be allowed to input. A group ID and an output ID are displayed in each cell in the leftmost column of this table. When the user clicks a desired cell with, for example, the mouse, a mark is displayed in the cell. Accordingly, the group ID of the column including the marked cell corresponds to the output ID or the group ID of the row including the marked cell. When the “Register” button is pressed, the group specified in this table is registered in the group table 1003 of FIG. 2C. When the "end" button is pressed, the screen returns to the menu screen of FIG.

FIG. 9 is an example of a transmission system registration screen.
This screen accepts registration of transmission system information in the transmission system table 1004. On this screen, a table having a plurality of cells arranged vertically and horizontally is displayed. The table ID of the transmission system table 1004 is displayed in the drop-down list at the top of the table.
Accept the selection of D. In each cell of this table, the transmission system ID, the input ID, the broadcast priority, and the
A system selection flag, a group ID, and an output ID are displayed. The transmission system ID is uniquely given by the registration module 1101. Input system table 1 for the input ID
The user can freely input only the input ID registered in 001. Any natural number can be input as the broadcast priority. The user can freely input or change information in each cell in each row below the system selection flag by clicking with a mouse, for example. When a cell in the row of the output group is clicked, the receiving device 3 forming the output group of the row
Is automatically added to the transmission system information to which the cell belongs. If you want to register a new transmission system, enter the information in the rightmost column. When the "Register" button is pressed,
The transmission system information specified in this table is registered in the transmission system table 1004 of FIG. When the "end" button is pressed, the screen returns to the menu screen of FIG.

FIG. 10 is an example of a transmission system selection registration screen. This screen accepts registration of information in the transmission system selection table 1005. On this screen, the operating device address and the button ID can be input, and one or more transmission system IDs registered in the transmission system table can be selected from the drop-down list. When the “Register” button is pressed, the input or selected information is registered in the transmission system selection table 1005. When the "end" button is pressed, the screen returns to the menu screen of FIG.

If the transmission system name, the input name, the output name, and the output group name are displayed instead of the transmission system ID, the input ID, the output ID, and the group ID on each screen of FIGS. , User's operation becomes easier. [Processing Flow] (1) Overall Processing Flow FIG. 11 shows a processing flow performed in the entire network premises broadcasting system according to the present invention. In this system, switching event detection (# 1), operation notification (# 2), broadcast event occurrence notification (# 3), output system notification (# 4), and voice packet transmission (# 5) are performed. Hereinafter, these will be specifically described.

The broadcast controller 1 detects a switching event (# 1). For example, the broadcast control device 1 detects an alarm notification from the sensor 5 that has detected smoke. Broadcast controller 1
When a switching event is detected, the table switching process described later is performed, and the table switching flag of any transmission system table is turned on. Hereinafter, the transmission system table in which the table switching flag is on will be referred to as the current table.

Operation notification section 4 of arbitrary operation device 4a
When the operation unit 42a is operated, the 1a issues an operation notification to the broadcast control device 1 (# 2). Upon receiving the operation notification, the broadcast control device 1 performs a transmission system selection process described below, and selects transmission system information used in the broadcast process described below from the current table. The arbitrary transmitter 2a is the input device 7a.
Broadcast event occurrence notification that indicates that the
It is transmitted to the broadcast control device 1 (# 3). Broadcast controller 1
Upon receiving the broadcast event occurrence notification, determines the address of the receiving device 3a that is the destination of the audio packet by the broadcast processing described later, and notifies the transmitting device 2a of this (#
4). The transmitter 2a transmits a voice packet addressed to the notified address (# 5). The receiving device 3a receives the voice packet addressed to itself, converts it into an analog voice signal, and outputs it to the speaker.

(2) Flow of Processing Performed by Broadcast Control Apparatus The processing performed by the broadcast control apparatus 1 is a table switching process, a transmission system selection process, and a broadcast process. Hereinafter, these three processes will be specifically described. (2-1) Flow of Table Switching Process FIG. 12 is a flowchart showing the flow of the table switching process.

Step S21: The table switching module 1103 determines whether or not a switching event, for example, an alarm notification has been received. If detected, the process proceeds to step S22. If not detected, step S21 is repeated. That is, in this processing, unless an alarm notification is generated,
The normal transmission system table whose table ID is "T01" is the current table.

Step S22: The table switching module 1103 sets the emergency transmission system table as the current table based on the management table 1301. That is, the table switching flag of the transmission system table specified by the table ID "T02" is turned on. The table switching module 1103 may switch the current table by detecting that the emergency release button (not shown) provided on the sensor 5 or the like is operated. in this case,
Based on the management table 1301, the table ID “T0
The table switching flag of the transmission system table specified by "1" is turned on.

(2-2) Flow of Transmission System Selection Process FIG. 13 is a flowchart showing the flow of the transmission system selection process. Step S31: The system selection module 1102 determines whether or not the operation notification transmitted from the operation notification unit 41a has been received. If received, the process proceeds to step S32. If not received, step S31 is repeated.

Step S32: System selection module 11
02 specifies the transmission system ID corresponding to the address of the operation device 4a and the button ID included in the operation notification based on the transmission system selection table 1005. Then, the system selection flag corresponding to the specified transmission system ID in the current table is turned on. (2-3) Flow of Broadcast Process FIG. 14 is a flowchart showing the flow of the broadcast process performed by the broadcast control device 1. In this process, a transmitting device 2
When a broadcast event occurs in the input device 7i connected to i, the address of the receiving device 3 is set so that the audio packet is transmitted from the transmitting device 2i to the predetermined receiving device 3.
i is notified (steps S51 to S53). And
When a broadcast event further occurs in the input device 7j connected to a certain transmitting device 2j, it is preferable to avoid duplicate voice packet transmission from different transmitting devices 2 to the same receiving device 3, so that the transmitting devices 2i, j Pre-emptive / post-acceptance transmission for voice packet transmission from any one of them to the overlapping receivers is preferentially performed (step S54).
~ S61). That is, the voice packet transmission by the transmitting device 2i that has already been performed is maintained, and preemptive transmission in which the address of the receiving device 3 that does not overlap is notified to the transmitting device 2j, or the address of the receiving device 3 that has already been notified to the transmitting device 2i A post-transmission transmission in which a transmission stop notification for instructing the transmission device 2i to stop the transmission of a voice packet to a duplicate one is performed, and then an address notification of the reception device 3 is issued to the transmission device 2j according to the occurrence of a new broadcast event, Any of the above is performed based on the broadcast priority corresponding to each broadcast event. Here, at least each of the transmission system information in which the system selection flag is turned on includes a different broadcast priority.

Step S51: Notification module 1104
Determines whether a broadcast event occurrence notification has been received from any transmitter 2i. If received, step S5
Move to 2. If not received, step S51 is repeated. Step S52: The notification module 1104 has the system selection flag of the transmission system information including the input ID corresponding to the transmission device address included in the broadcast event occurrence notification received in step S51 (hereinafter, referred to as the first transmission system). First output ID which is the output ID included in the information)
Is determined based on the current table, and the memory 130
Store in 1.

Step S53: Notification module 1104
Acquires the first reception address, which is the reception device address corresponding to the first output ID, from the output system table 1002 and notifies the transmission device 2i. Step S54: The notification module 1104 determines whether or not a broadcast event occurrence notification has been further received from any transmission device 2j. If received, the process proceeds to step S55. If not received, step S54 is repeated.

Step S55: Notification module 1104
Is included in the transmission system information including the input ID corresponding to the transmission device address included in the broadcast event occurrence notification received in step S54 for which the system selection flag is on (hereinafter referred to as second transmission system information). The second output ID, which is the output ID, is determined based on the current table and stored in the memory 1301.

Step S56: Notification module 1104
Compares the first output ID and the second output ID and determines whether at least one of the output IDs included in the second output ID matches any one of the first output IDs. If they match, the process proceeds to step S57. If they do not match, the process proceeds to step S60. Step S57: The notification module 1104 determines whether or not the priority P1 of the transmission system information including the first output ID is lower than the priority P2 of the transmission system information including the second output ID. If P1 <P2, the process proceeds to step S58. If P1> P2, the process proceeds to step S59.

Step S58: Notification module 1104
Is the output ID included in the first output ID and the output ID included in the second output ID, and stops the transmission of the voice packet to the receiving device 3 specified by the duplicate output ID. The transmission device 2 sends a transmission stop notification to instruct.
send to i. Step S59: The notification module 1104 outputs the receiving device address corresponding to the non-overlapping output ID which is the output ID included in the second output ID and does not match any of the output IDs included in the first output ID. It is acquired from the system table 1002 and notified to the transmission device 2j.

Step S60: Notification module 1104
Acquires the second reception address, which is the reception device address corresponding to the second output ID, from the output system table 1002 and notifies the transmission device 2j. Step S61: The notification module 1104 stores the second output ID in the memory 1301 as the first output ID, and returns to step S54.

<Other Embodiments> (A) The switching event is not limited to the alarm notification. For example, the current table may be switched by using a change in time as a switching event. Specifically, let us consider a case where it is desired to perform broadcasting only by speakers installed indoors at night or on holidays. In this case, a transmission system table in which only the output ID of the receiving device 3 connected to the speaker installed indoors is included in the transmission system information is generated as the after-hours transmission system table. In this table, the table ID "T0
3 "is added and stored in the management DB 100 of the first embodiment. Then, in step S21 (switching event detection step) in the table switching process,
The table switching module 1103 is based on a timer integrally formed with the broadcast control device 1, and at a predetermined time and day of the week,
For example, it detects that it is 6:00 pm or Sunday. Then, in step S22, the table switching flag of the out-of-hours transmission system table specified by the table ID "T03" based on the management table 1301 is turned on. Further, in step S21 of the table switching process, when the table switching module 1103 detects that it is 8:00 am or Monday, the process proceeds to step S22. In this case, in step S22, the table switching flag of the normal transmission system table specified by the table ID "T01" based on the management table 1301 is turned on.

(B) In the first embodiment, the operating device 4,
It is also possible to realize a broadcast control system in which the sensor 5, the management table 1301 and the table switching module 1103 are omitted. That is, if the broadcast control device 1 has one transmission system table 1004, it is possible to perform the above-mentioned broadcast processing. In this case, step S of the above-mentioned broadcast processing
The current table in 42 is the above-mentioned one transmission system table.

(C) In step S58 in the broadcast processing of the first embodiment, the transmission stop notification is transmitted to avoid duplicate voice packet transmission to the same receiving device. However, in the step S58,
Even if the transmitting device 2i is notified again of the non-overlapping receiving device address, the overlapping voice packet transmission can be avoided.

(D) In the broadcast processing of the first embodiment, pre-empty / post-acceptance transmission is performed based on the broadcast priority. However, the broadcast processing of the first embodiment may be performed by allowing the pre-emption / post-fetching transmission to be selected in advance. Specifically, a reference selection screen as shown in FIG. 15 is provided so that either “pre-send transmission” or “successive transmission” can be selected by a radio button. Then, in step S57 of the broadcast processing, it is determined whether or not "post-processing transmission" is selected on the reference selection screen.
When "post-collection transmission" is selected, the process proceeds to step S58. If "preemption transmission" is selected, step S
Move to 59. In this way, it is possible to avoid overlapping voice packet transmission to the receiving device without using the broadcast priority. Also, if either "preemption transmission" or "post-delivery transmission" is selected, input of the broadcast priority is not required. Therefore, for example, if "preemption transmission" or "post-delivery transmission" is not selected. As in the case of the first embodiment, pre-empty / post-possible transmission is performed based on the broadcast priority, and conversely, when either "pre-empty transmission" or "post-sequential transmission" is selected, the transmission of FIG. 9 is performed. The above processing may be performed after the input of the broadcast priority on the system selection screen is not accepted.

(E) In the broadcast processing of the first embodiment, each piece of transmission system information in which the system selection flag is turned on includes a different broadcast priority. However, it is also possible to set overlapping broadcast priorities for each of the transmission system information. For example, as in the case of (D) above, a reference selection screen is provided so that pre-taken / post-taken transmission can be selected. By default, it is assumed that either pre-empty / post-sent transmission is selected. Then, it is determined in advance whether or not the broadcast priority of the first transmission system information and the broadcast priority of the second transmission system information are the same, and if they are the same, the reference selection screen is displayed in the same manner as in (D) above. It is further determined whether to send and receive has been selected. Then, when “post-collection transmission” is selected, step S58
When the transmission stop notification is performed for the duplicated output IDs in the same manner as described above and "preemption transmission" is selected, step S59
In the same way as above, the reception address that does not overlap is notified. By doing so, it is not necessary to separately provide an error processing or the like for the case where the broadcast priority is set redundantly on the transmission system selection screen of FIG.

(F) Input device 7 of the first embodiment
When the operation is started, the control signal is transmitted to the transmission device 2, and when the control device receives the control signal, the transmission device 2 transmits the broadcast event occurrence notification to the broadcast control device 1. But,
At a timing other than the operation start of the input device 7, the input device 7
Alternatively, the control signal may be transmitted to the transmitting device 2 from another device. For example, a switch is provided on the input device 7 such as a remote microphone, and when the switch is pressed during announcement broadcasting or the like, a control signal is transmitted to the transmitting device 2 connected to the input device 7. By doing so, even if the operation start of the input device 7 and the timing of the voice input do not coincide with each other, such as the announcement broadcast using the remote microphone, by pressing the switch, the voice input to the transmitting device can be performed at an appropriate timing. it can. Alternatively, a switch corresponding to the input device 7 such as a "microphone", a "CD player", a "radio" (hereinafter referred to as a sound source selection switch) is provided on the operation device 4, and a sound source is provided. When the selection switch is pressed,
The control signal is transmitted to the transmitting device 2 connected to the input device 7. In this way, even if a radio or a cable broadcasting receiver is always operating and it is inappropriate to transmit the control signal at the timing of the operation start, it can be used as a sound source by pressing the sound source selection switch.

(G) In the first embodiment, the operating device 4 can select a transmission system using a certain input device 7 as a sound source, and a combination of one sound source and one or a plurality of broadcast destinations ( Hereinafter, the broadcast system) cannot be freely selected by the user. However, it is also possible to freely select one or a plurality of broadcasting systems by a user's operation. For example, the operating device 4 of the first embodiment is provided with a plurality of sound source selection switches having the same function as the above (F). Each of the sound source selection switches corresponds to one of the input devices 7. For example, the first sound source selection switch is "microphone", the second sound source selection switch is "CD player", the third sound source selection switch is "radio", and the fourth sound source selection switch is "cable broadcasting receiver" ...
Correspondence such as. Furthermore, the operating device 4 includes
A plurality of operation units 42 are provided. A plurality of transmission systems are associated with each of the operation units 42 by the transmission system selection table 1005 of the first embodiment. Here, the plurality of transmission systems corresponding to one operation unit 42 are set so that the output IDs are common and the input IDs are different. Therefore, when a certain one operation unit 42 is operated, the system selection flags of a plurality of transmission systems having the same broadcast destination but different sound sources are simultaneously turned on. That is, there is one
When the operation unit 42 is operated, one broadcasting destination, for example, "classroom", "gymnasium", or "schoolyard" is first selected. It is also possible to simultaneously operate a plurality of operation units 42 and simultaneously select a plurality of broadcast destinations. When any one of the sound source selection switches is pressed after selecting the broadcast destination, a control signal is transmitted to the transmission device 2 connected to the input device 7 corresponding to the sound source selection switch, and the transmission device 2 transmits to the broadcast control device 1. Broadcast event occurrence notification is transmitted. If the broadcast processing of the first embodiment is performed based on this broadcast event occurrence notification,
The system selection flag is turned on, and the audio packet is transmitted by the transmission system including the input ID of the transmission device 2 that has transmitted the broadcast event occurrence notification among the plurality of transmission systems having the same output ID. Therefore, by using the operation device configured as described above, one broadcasting system can be freely selected by the user's operation.

On the other hand, it is possible to provide a plurality of operating devices 4 having a plurality of sound source selection switches and a plurality of operating sections 42 as described above on the network 10, and to integrate these operating devices 4 into one unit. With this configuration, a plurality of broadcast systems can be freely selected by the user's operation. (H) The present invention also includes a computer-readable recording medium recording a program for performing the above-described processing. Here, as the recording medium, a computer-readable flexible disk, semiconductor memory, CD-ROM, DV
D, MO, and others.

[0068]

According to the present invention, it is possible to realize the control of multi-system private broadcasting using a network.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a network private broadcasting system according to a first embodiment.

FIG. 2A is a conceptual explanatory diagram of information accumulated in an input system table. (B) Conceptual explanatory view of the information accumulated in the output system table. (C) Conceptual explanatory view of the information accumulated in the output group table.

FIG. 3 is a conceptual explanatory diagram of information stored in a transmission system table.

FIG. 4 is a conceptual explanatory diagram of information accumulated in a transmission system selection table.

FIG. 5 is a conceptual explanatory diagram of information accumulated in a management table.

FIG. 6 shows an example of a menu screen.

FIG. 7A is an example of an input system registration screen. (B) An example of an output system registration screen.

FIG. 8 shows an example of an output group registration screen.

FIG. 9 shows an example of a transmission system registration screen.

FIG. 10 shows an example of a transmission system selection registration screen.

FIG. 11 is an explanatory diagram showing the flow of processing in the entire system.

FIG. 12 is a flowchart showing the flow of table switching processing.

FIG. 13 is a flowchart showing the flow of a transmission system selection process.

FIG. 14 is a flowchart showing the flow of broadcast processing.

FIG. 15 shows an example of a reference selection screen.

FIG. 16 (a) is a configuration example of a conventional local area broadcasting system using a matrix circuit. (B) A configuration example of a network premises broadcasting system.

[Explanation of symbols]

1: Broadcast control device 2: transmitter 3: Receiver 4: Operating device 5: Sensor 100: Management DB 110: Module group

[Procedure amendment]

[Submission date] May 22, 2002 (2002.5.2)
2)

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (11)

[Claims] 1. A broadcast control method used in a computer connected to a transmitting device and a receiving device via a network, wherein a first broadcasting indicating the start of audio transmission from a first transmitting device included in the transmitting device. A first broadcast event receiving step of receiving an event occurrence notification, and a receiving device identifier for uniquely identifying, on the network, a receiving device which is a voice packet transmission destination of the first transmission device (hereinafter referred to as a first transmission destination). A first determining step of determining, and a first of notifying the receiving device identifier to the first transmitting device
A broadcast control method including a destination notification step. 2. A transmission destination selection receiving step of receiving a selection of a receiving device as a transmission destination, and a transmission source selection receiving step of receiving a selection of the first transmission device as a transmission source, wherein the decision is made by the selection. The broadcast control method according to claim 1, which is performed based on a receiving device. 3. A combination of one or more of a transmission device identifier for uniquely identifying a transmission device as a transmission source on the network and a reception device identifier of a reception device as a transmission destination (hereinafter,
The transmission system information storing step of storing transmission system information defining a transmission system) is further included, and in the determining step, at least one transmission system having the first transmission device as a transmission source is based on the transmission system information. The broadcast control method according to claim 1, further comprising: selecting and determining a receiver identifier of a receiver that is a voice packet destination of the first transmitter. 4. The broadcast control method according to claim 3, wherein the transmission system information further includes priority information indicating a priority of the transmission system. 5. A group selection accepting step of accepting a selection of a receiving device identifier group consisting of a plurality of receiving device identifiers included in the receiving device identifier, a group identifier for identifying the receiving device identifier group, and the receiving device identifier group. The broadcast control according to claim 3, further comprising: a group storage step of storing the reception apparatus identifier included in the above in association with each other, wherein the transmission destination selection receiving step further receives selection of the group identifier as a transmission destination. Method. 6. The broadcast control method according to claim 3, further comprising an updating step of receiving an update of the transmission system information. 7. The operation notification receiving step of receiving an operation notification including operation identification information from the operation device, the computer being connected to an operation device for operating the transmission device via the network. A transmission system selection information receiving step of receiving an input of transmission system selection information that associates the operation identification information with the transmission system information, a transmission system selection information storage step of storing the transmission system selection information, and the received operation notification. A third transmission system selection step of selecting transmission system information corresponding to the included operation identification information based on the transmission system selection information; and in the first destination notification step, the third transmission system selection The receiving device identifier of the transmission destination in the transmission system information selected in step is notified to the first transmitting device. Broadcasting control method according to. 8. A group use condition storage storing a plurality of combinations of a transmission system information group that defines a transmission system group including at least one transmission system and a use condition that is a condition for using the transmission system information group. Step, a detection step of detecting a change in the use condition, and any transmission corresponding to a new use condition including a transmission system used in the first transmission system selection step based on the detected change in the use condition A transmission system information group selecting step of selecting a system information group; and, the determination is performed based on transmission system information included in the transmission system information group selected in the transmission system information group selecting step, The broadcast control method according to Item 3. 9. A pre-fetch / post-procedure selection accepting step for accepting a selection of preemptive transmission or post-procedure transmission, and receiving a second broadcast event occurrence notification indicating the start of audio transmission from a second transmitting device included in the transmitting device. And a second broadcast event receiving step for selecting, based on the transmission system information, one or more transmission systems having the second transmission device as a transmission source, and selecting a voice packet transmission destination of the second transmission device (hereinafter, referred to as a second transmission packet). A second determining step of determining a receiving device identifier of a receiving device (referred to as a transmission destination), and whether or not there is a duplicate transmission destination that is a transmission destination included in both the first transmission destination and the second transmission destination. A duplication determination step for determining whether or not the duplicate transmission destination exists and the post-delivery transmission is selected, the reception device identifier of the duplicate transmission destination or the duplicate transmission destination from the first transmission destination Re-notifying step of notifying the first transmitting device of the receiving device identifier of the first non-overlapping transmission destination except the second, depending on the existence of the duplicate transmission destination and the selection of the preemptive transmission or the post-delivery transmission, the second A second identifier obtained by removing the duplicate destination from the receiver identifier of the destination or the second destination
The broadcast control method according to claim 3, further comprising: a second transmission destination notification step of notifying the second transmission device of a reception device identifier of a non-overlapping transmission destination. 10. A broadcast control device connected to a transmitting device and a receiving device via a network, wherein a first transmitting device included in the transmitting device sends a first broadcast event occurrence notification indicating the start of audio transmission. First broadcast event receiving means for receiving, first determining means for determining a receiving apparatus identifier for uniquely identifying a receiving apparatus as a voice packet transmission destination of the first transmitting apparatus on the network, and the receiving apparatus identifier First to notify the first transmitting device
A broadcast control device including a transmission destination notification unit. 11. A broadcast control program for causing a computer connected to a transmission device and a reception device via a network to function, wherein a first transmission device included in the transmission device indicates the start of audio transmission. A first broadcast event receiving means for receiving one broadcast event occurrence notification; a first determining means for determining a receiving apparatus identifier for uniquely identifying a receiving apparatus as a voice packet transmission destination of the first transmitting apparatus on the network; A first notifying the first transmitter of the receiver identifier;
A broadcast control program for causing the computer to function as destination notification means.