KR100923488B1 - Local broadcasting device and PA system including the same - Google Patents

Abstract

PURPOSE: A local broadcasting apparatus and a public address broadcasting system including the same are provided to make the apparatus compact without separate power supply. CONSTITUTION: A local broadcasting apparatus(100) comprises a transceiver(110), a user selection part(120), a signal input part(130), and a controller(150). The transceiver transmits and receives to and from an output selection apparatus. The signal input part receives an audio signal from the outside. The controller receives an allowable control signal. The allowable control signal allows the transceiver to control the function of the output selection apparatus.

Description

Local broadcasting apparatus and public address broadcasting system including the same

The present invention relates to a local broadcasting apparatus installed in a broadcasting zone of an public address broadcasting system and interlocked with an output selecting apparatus of a broadcasting room. The present invention relates to a local broadcasting apparatus controlling an output selecting apparatus or capable of self-casting in a broadcasting region, and a public address broadcasting including the same. It is about the system.

PA system is a broadcasting system that is constructed in a limited range requiring emergency broadcasting such as buildings and schools, and emits sound through a speaker device installed in each of a plurality of broadcasting zones in a limited output area.

As shown in FIG. 1, the prior art PA system 10 includes a broadcast control device 12, an output selection device 14, an audio amplifier device 16, and a speaker device 18. As shown in FIG. Here, the broadcast control device 12 controls the overall broadcast, receives or generates audio signals from the outside, and outputs these audio signals to the output selection device 14. The output selection device 14 selects and controls audio signals input from the broadcast control device 12 and outputs the audio signals to the audio amplifier device 16. The audio amplifier device 16 amplifies the input audio signal and outputs the amplified audio signal to the speaker device 18 installed in each broadcasting zone 'A1', 'A2', 'A3', and the speaker device 18 is inputted. An audio signal is emitted to each broadcasting zone 'A1', 'A2', and 'A3'.

As described above, in the conventional public address system 10, a broadcast apparatus such as the broadcast control device 12, the output selection device 14, and the audio amplifier device 16 is installed only at a specific place such as a broadcast room 'S'. In each broadcasting area 'A1', 'A2', and 'A3', it is a one-way broadcasting system capable of only receiving broadcasts through the speaker device 18. Therefore, the conventional public address system 10 cannot select a broadcast channel or adjust a volume in each broadcast zone that receives a broadcast, and reproduces it without a separate media device even if there is useful media information in each broadcast zone. And there was a problem that it was impossible to output.

The present invention for solving the above-described problems, it is possible to control some functions, such as the change of the broadcast channel, the volume level control function of the output selection device installed in the broadcasting room from each broadcasting zone of the public address system in the permitted range, It is an object of the present invention to provide a local broadcasting apparatus capable of controlling a selected apparatus to process a transmitted audio signal and broadcasting the audio signal to a broadcasting zone where the audio signal is transmitted, and a public address system including the same.

A first feature according to the present invention for achieving the above-described technical problem is interlocked with an output selection device installed in a broadcasting room of an output area in which a public address system is constructed, and installed in a plurality of broadcasting zones divided into the output area. A local broadcast apparatus, the local broadcast apparatus, Transmitting and receiving unit for transmitting and receiving a signal with the output selection device; A user selection unit; And control the function of the output selection device through the user selection unit within the range of the control right when a permission control signal for allowing the transmission and reception unit to control the function of the output selection device is received and the control right is granted. And a controller configured to generate a local control signal corresponding to the selection and transmit the local control signal to the output selection device through the transmission / reception unit, to control the operation of the output selection device in the broadcasting zone to control the broadcasting of the corresponding broadcasting zone. It features.

Here, the user selector includes any one or both of a channel selector for selecting an audio signal to be broadcast in the corresponding broadcast zone and a volume level selector for adjusting the volume of the audio signal to be broadcast in the corresponding broadcast zone. The local control signal may include one or both of a channel selection signal corresponding to the selection of the channel selection unit and a volume level selection signal corresponding to the selection of the volume level selection unit.

The local broadcasting apparatus may further include a signal input unit configured to receive an audio signal from an external device, and the control unit may output the audio signal input through the signal input unit through the transceiver to the output selector while receiving the control right. To send.

In addition, the transmission and reception unit is supplied with power supplied from the output selection device, and the local broadcasting device is driven by the power supplied through the transmission and reception unit.

Here, the transceiver and the output selection device may be connected by a UTP cable.

In addition, the local broadcasting device is preferably provided with an appearance that can be combined with a switching box previously built in the wall of the building.

The local broadcasting apparatus further includes a display unit, and the control unit displays channel information of an audio signal broadcast in the broadcasting area on the display unit, and when the control right is granted, the control unit is granted the control right. When the channel of the audio signal to be broadcasted to the corresponding broadcast zone is changed through the user selection unit, the channel information of the changed audio signal is displayed on the display unit.

According to a second aspect of the present invention, there is provided a speaker device including a broadcast control device, speaker devices, and an audio amplifier device, and installed in a plurality of divided broadcast zones within a limited output area. The public address broadcasting system capable of audio broadcasting through the public address broadcasting system includes: an output selection device for selecting an audio signal to be broadcast or adjusting an audio signal to be broadcast and outputting the audio signal to the audio amplifier device; And a local broadcasting device which transmits and receives a signal through a cable connected to the output selection device, and is installed in each of the broadcasting zones. The local broadcasting device includes a channel selection unit or a volume level selection unit for user selection. When a permission control signal for granting control to the local broadcasting apparatus is applied from the output selection apparatus, a channel selection signal or a volume level selection signal is generated in response to the selection of the channel selection unit or the volume level selection unit. The output selection device transmits to the output selection device through the transmission / reception unit. When the channel selection signal or the volume level selection signal is input from a specific local broadcasting device, the output selection device responds to the input channel selection signal or the volume level selection signal. Correspondingly, select a channel of an audio signal to be broadcasted to a broadcasting zone where the specific local broadcasting apparatus is installed; The volume level of the audio signal to be broadcast is adjusted.

Here, the local broadcasting apparatus further includes a signal input unit for receiving an audio signal from the outside, and transmits the audio signal input by the signal input unit to the output selection device while the allowance control signal is applied. When the output selection device receives an audio signal from the local broadcasting device, the output selection device processes the received audio signal and emits the audio signal through a speaker device in a broadcasting area in which the local broadcasting device which has transmitted the audio signal is installed.

The output selection device further includes a control selection key for granting control to each local broadcasting device, and the output selection device is allowed to the local broadcasting device when the control selection key for the specific local broadcasting device is selected. Send the control signal.

As described above, the local broadcasting apparatus according to the present invention can control some functions such as changing the audio signal channel and volume level adjusting function of the output selecting apparatus installed in the broadcasting room from each broadcasting zone. By processing the transmitted audio signal can be controlled to broadcast the audio signal to the broadcast zone, it is possible to reproduce and output the audio signal itself without installing an additional media device in each broadcast zone.

In addition, the local broadcasting apparatus according to the present invention is supplied with power from the output selection device via a cable, there is no need to receive a separate power supply, it is possible to manufacture the device compact and easy to install.

In addition, the local broadcasting apparatus according to the present invention can be easily installed on the building wall by making the size and shape of the device appearance in accordance with the switching box in the wall of the building, it is to use a connecting pipe connected to the switching box. It is possible to easily perform the wiring of the cable.

Hereinafter, a local broadcasting apparatus and a public address broadcasting system including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

 <Local Broadcasting Equipment>

FIG. 2 is a block diagram of a local broadcasting apparatus according to an embodiment of the present invention, and FIG. 3 is a view showing a signal interworking between the local broadcasting apparatus and the output selecting apparatus according to an embodiment of the present invention. Hereinafter, a local broadcasting apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3.

As shown in FIG. 2, the local broadcasting apparatus 100 according to the present embodiment includes a transceiver 110, a user selector 120, a signal inputter 130, a display 140, and a controller 150. do. The local broadcasting apparatus 100 is installed in a broadcasting zone in which broadcasting is received and operates in connection with an output selecting apparatus Z installed in a broadcasting room. Hereinafter, each configuration will be described in detail.

First, as shown in Figure 3, the transceiver 110 is connected to the output selection device (Z) via a cable to transmit and receive signals. Here, the cable connects the output selection device Z located in the broadcasting room and the local broadcasting device 100 installed in each of the broadcasting zones. The cable uses a UTP cable that can be easily wired to a building. In this case, a CAT-5 type cable is used in consideration of transmission characteristics and transmission distance.

As shown in FIG. 2, the transceiver 110 includes a control signal transmitter and receiver 111, a power receiver 112, and an audio transmitter 114. The control signal transmission / reception terminal 111 processes a signal received from the output selection device Z and transmits the signal to the control unit 150 and processes the signal generated by the control unit 150 to transmit the signal to the output selection device Z. Do this. Here, the transceiver 110 uses communication of the RS422 standard. In the case of the CAT-5 cable, four wires (TX (+), TX (-), RX (+), RX (-)) are used, and two wires (TX (+), TX (-)) The transmission and two wires (RX (+) and RX (-)) are used for reception, and the use of different communication methods may be considered depending on the structure and environment of the output area where the PA system is constructed.

The power receiving terminal 112 receives power from the output selector Z through two of the eight lines of the cable (+ 24V, GND). Here, the power supplied through the power receiver 112 is supplied to a power supply unit (not shown), and the power supply unit (not shown) supplies corresponding power to each component of the local broadcasting apparatus 100 according to the present embodiment. to provide. Of course, when power is not supplied from the output selection device Z, power can be supplied at a place where the local broadcasting device 100 is installed by adding a power circuit to a power supply unit (not shown). In addition, the audio transmitter 114 transmits the audio signal input from the signal input unit 130 to the output selector Z through two of the eight lines of the cable (AUDIO (+) and AUDIO (-)). do.

The user selector 120 includes a channel selector 122 for selecting a channel to broadcast and a volume level selector 124 for adjusting the volume of the broadcast on the front of the case to facilitate user manipulation. Each signal corresponding to the selected value is transmitted to the controller 150. The controller 150 generates a control signal for selecting a channel to broadcast and a control signal for adjusting the volume of the broadcast, based on each transmitted signal. As such, the control signal generated by the controller 150 is defined as a "region control signal".

The signal input unit 130 performs a function of receiving an audio signal from a media device such as a CDP, an MP3, or a PMP located in a broadcasting area. In addition, the signal input unit 130 arranges a microphone input terminal (not shown) for microphone input and a line input terminal (not shown) for receiving an audio signal on the front of the case in consideration of accessibility of the user. . The signal input unit 130 converts each audio signal input by the control of the controller 150 into a signal having a predetermined standard and transmits the signal to the transceiver 110.

The display unit 140 displays the channel information of the audio signal selected through the channel selector 122, or displays the channel information of the audio signal being broadcast in the broadcasting zone. Specifically, the controller 150 displays the channel information of the audio signal that is being broadcast in the broadcast zone on the display unit 140, and informs the display unit 140 that the control right has been granted when the control right is received from the output selection device Z. When the channel of the audio signal to be broadcasted to the corresponding broadcast zone is changed through the channel selector 122, the channel information of the changed audio signal is displayed on the display unit 140.

When the channel selector 122 is selected in the state where the allowable control signal is received from the output selector Z by the transceiver 110, the controller 150 determines that the output selector Z is a corresponding broadcast zone. It generates a 'channel selection signal' for controlling to set the channel of the audio signal to be broadcasted. The controller 150 transmits the generated channel selection signal to the output selection device Z by using the control signal transmission / reception terminal 111 of the transceiver 110. In addition, when the volume level selector 124 is selected in the state where the allowance control signal is received from the output selector Z by the transceiver 110, the controller 150 determines that the output selector Z It generates a 'sound level selection signal' for controlling to set the volume level of the audio signal to be broadcast in the broadcast zone. The controller 150 transmits the generated sound level selection signal to the output selection device Z by using the control signal transmitter / receiver 111 of the transceiver 110.

When the audio signal is input through the signal input unit 130 while the control right is received from the output selection device Z, the controller 150 selects the input audio signal by the transmission / reception unit 110. Transmit to device Z. The audio signal is transmitted to the output selection device Z through the audio transmitter 114. Here, the output selection device Z which is connected to and operates with the local broadcasting apparatus 100 according to the present embodiment, the local broadcasting apparatus 100 which transmits the audio signal received from the local broadcasting apparatus 100 and the corresponding audio signal. Is set to emit through the speaker unit installed in the installed broadcasting area. Then, the output selection device Z is set to generate a control signal allowing the control of the function of the output selection device Z to be transmitted to the local broadcasting device 100 by the user's selection. Here, the control signal generated by the output selection device Z is defined as an "allowable control signal".

In addition, the appearance of the local broadcasting apparatus 100 according to the present embodiment is manufactured in a size and shape that can be combined with a switching box previously built in the wall of the building. As a result, the local broadcasting apparatus 100 can be installed by being inserted into the switching box without protruding from the inside of the building, and the connection pipe connected to the switching box can be used as it is, so that wiring can be easily performed.

In this way, the local broadcasting apparatus 100 according to the present embodiment makes it possible to control the function of the output selecting apparatus Z installed in the broadcasting room in the broadcasting zone, and outputs the audio signal from the broadcasting zone. To send). Therefore, the local broadcasting apparatus 100 according to the present embodiment enables the broadcasting zone to control and transmit the broadcast signal, which is possible only by the output selection apparatus Z installed in the conventional broadcasting room.

In the present embodiment, only the interworking with the output selection device Z installed in the broadcasting room is presented, but interworking with other broadcasting devices such as the broadcasting control device installed in the broadcasting room may be considered.

PA system

Hereinafter, the PA system will be described with reference to FIG. 4. 4 is a block diagram of an PA system according to an embodiment of the present invention.

As shown in FIG. 4, in the PA system 1 according to the present embodiment, a broadcast control device 410, an output selection device 420, and an audio amplifier device 430 are installed in a broadcasting room 'S'. The speaker device 440 and the local broadcasting device 450 are installed in the broadcasting areas 'A1', 'A2' and 'A3'.

The broadcast control device 410 controls the PA system 1 as a whole by interworking with the output selection device 420 and the audio amplifier device 430. The broadcast control device 410 provides audio signals to the output selection device 420, and the output selection device 420 selects a channel of an audio signal to be broadcasted out of the audio signals input from the broadcast control device 410. Select a volume level of an audio signal to be broadcast and select broadcast zones to be broadcast;

In particular, the output selection device 420 included in the PA system 1 according to the present embodiment is connected to the local broadcasting apparatus 450 installed in the broadcasting areas 'A1', 'A2', and 'A3'. In order to operate, a control selection key 422 for transferring control rights to some functions of the output selection device 420 to the local broadcasting apparatus 450, a communication unit 424 for transmitting and receiving a signal with the local broadcasting apparatus 450, An audio receiver 426 for receiving an audio signal, and a power supply 428 for supplying power. The communication unit 424 is connected to the transmission and reception unit (110 of FIG. 2) of the local broadcasting apparatus 450 to perform bidirectional data communication, and the power supply unit 428 transmits and receives a DC power source through the cable 110 The power is transmitted to the receiving terminal (112 of FIG. 2). The audio receiver 426 receives the audio signal transmitted through the cable from the local broadcasting apparatus 450. The received audio signal is transmitted to the audio amplifier device 430 by the output selection device 420.

When the control selection key 422 is applied, the output selection device 420 generates a control signal allowing the control of some functions of the output selection device 420 to generate a control signal through the built-in communication unit 424. Transmit to 450. Here, the control signal generated by the output selection device 420 is defined as an "allowable control signal." In addition, when the output selection device 420 receives a local control signal from the local broadcasting apparatus 450 through the communication unit 424, the local broadcasting apparatus according to the channel information or the volume level information included in the local control signal. Set the channel of the audio signal to be broadcast in the broadcast zone or adjust the volume of the audio signal to be broadcast. In addition, the output selection device 420 processes the audio signal received through the audio receiver 426 and outputs the audio signal to the audio amplifier device 430 corresponding to the broadcasting zone where the audio signal is transmitted. The audio amplifier device 430 emits an audio signal through the speaker device 440. Since the description of the local broadcasting apparatus 450 interworking with the output selection apparatus 420 has been described with reference to FIGS. 2 and 3, a detailed description thereof will be omitted.

As described above, the PA system 1 according to the present embodiment outputs installed in the broadcasting room 'S' using the local broadcasting apparatus 450 installed in the broadcasting zones 'A1', 'A2', and 'A3'. Some functions, such as changing the channel of the audio signal of the selector 420 and adjusting the volume of the audio signal, are controlled, or the output selector 420 processes the audio signal transmitted from the local broadcaster 450 to perform the local broadcast. By transmitting to the broadcasting zone where the device 450 is located, it can be controlled to emit to each broadcasting zone, so that the audio signal can be reproduced and output by itself without installing an additional media device in each broadcasting zone.

The local broadcasting apparatus according to the present invention can be usefully used for constructing a broadcasting system for transmitting a broadcast to a plurality of broadcasting zones such as public address broadcasting system.

1 is a block diagram of a conventional PA system.

2 is a block diagram of a local broadcasting apparatus according to an embodiment of the present invention.

3 is a diagram illustrating a signal interworking with a local broadcasting apparatus and an output selecting apparatus according to an embodiment of the present invention.

4 is a block diagram of a public address system according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

1: PA system 100: Local broadcasting device

110: transceiver unit 120: user selection unit

130: signal input unit 140: display unit

150: control unit 410: broadcast control device

420: output selection device 430: audio amplifier device

440: speaker device 450: local broadcasting device

Claims (10)

In the local broadcasting device interlocked with the output selection device installed in the broadcasting room of the output area in which the public address system is built, and installed in a plurality of broadcasting zones in the output area, A transceiver for transmitting and receiving a signal with the output selection device; A user selection unit; A signal input unit receiving an audio signal from the outside; And In the case where the permission control signal for allowing the transceiver to control the function of the output selection device is received and the control right is received, the output selection device corresponding to the selection when the user selection unit is selected while the control right is granted Generating a local control signal to control the function of the control unit and transmits to the output selection device through the transmission and reception unit, and transmits the audio signal input through the signal input unit to the output selection device through the transmission and reception unit while the control right is granted. A control unit; And controlling the operation of the output selection device in the broadcasting zone to control the broadcasting of the broadcasting zone. The method of claim 1, The user selector includes one or both of a channel selector for selecting a channel of an audio signal to be broadcast in the corresponding broadcast zone, and a volume level selector for adjusting a volume of an audio signal to be broadcast in the corresponding broadcast zone. and, And the regional control signal includes any one or both of a channel selection signal corresponding to the selection of the channel selection unit and a volume level selection signal corresponding to the selection of the volume level selection unit. delete The method of claim 1, The transceiver unit receives the power supplied from the output selection device, The local broadcasting apparatus is driven by the power supplied through the transceiver. The method of claim 1, And the transmission and reception unit and the output selection device are connected by a UTP cable. delete The method of claim 1, The local broadcasting apparatus further includes a display unit, The control unit displays channel information of an audio signal that is being broadcast in the broadcasting zone on the display unit, and when the control right is granted, displays the control unit on the display unit, and displays the corresponding broadcasting zone through the user selection unit. And changing the channel information to be displayed on the display unit. A public address system comprising a broadcast control device, speaker devices, and audio amplifier devices, and capable of audio broadcasting through a speaker device installed in a plurality of broadcast zones within a limited output area, An output selection device for selecting an audio signal to be broadcast or adjusting an audio signal to be broadcast and outputting the audio signal to the audio amplifier device; And A local broadcasting device installed in each of the broadcasting zones, transmitting and receiving signals through a cable connected to the output selection device, and including a signal input unit for receiving an audio signal from the outside; Equipped, The local broadcasting apparatus includes a channel selecting portion or a volume level selecting portion for selecting a user, and when the permission control signal for granting control to the local broadcasting apparatus is received from the output selecting apparatus, the channel selecting portion or the volume level selecting portion is received. In response to the negative selection, a channel selection signal or a volume level selection signal is generated and transmitted to the output selection device, and the audio signal input by the signal input unit is transmitted to the output selection device while the allowance control signal is applied. , When the channel selection signal or the volume level selection signal is input from the specific local broadcasting apparatus, the output selection device may broadcast to the broadcasting zone in which the specific local broadcasting apparatus is installed in response to the input channel selection signal or the volume level selection signal. When a channel of an audio signal is selected or a volume level of the audio signal to be broadcast is adjusted, and an audio signal is received from the local broadcasting apparatus, the broadcasting apparatus installed with the local broadcasting apparatus which processes the received audio signal and transmits the audio signal is installed. Public address system, characterized in that emitted through the speaker unit of the area. delete The method of claim 8, The output selection device further includes a control selection key for granting a control right to each local broadcasting device, and the output selection device permits a control signal to the local broadcasting device when the control selection key for the specific local broadcasting device is selected. PA system, characterized in that for transmitting.

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