KR101193026B1 - Premises broadcasting service apparatus for supporting audio mixing - Google Patents

Abstract

An on-premises broadcasting service apparatus supporting audio mixing according to the present invention includes: an audio input unit including a plurality of audio input terminals; A storage unit storing a mixing matrix in which at least one output path is recorded corresponding to each input signal line; And forming an input signal line corresponding to each input terminal of the audio input unit. When audio data is input from the audio input unit, the output path corresponding to the input signal line to which the audio data is input is checked in the mixing matrix of the storage unit. The audio data is output to the output path, and whether or not the output path designated as the output path of the plurality of audio data exists based on the mixing matrix of the storage unit, and if present, the plurality of audio data are mixed to mix the specified output path. It includes an audio mixing control unit for sending out.
The present invention selectively mixes some audio data of which a destination is duplicated among a plurality of audio data, and accurately transmits the mixed audio data to a broadcast receiving terminal or an output device designated as a destination.

Description

Premises broadcasting service apparatus for supporting audio mixing

The present invention relates to an on-premises broadcasting service technology for supporting audio mixing, and more particularly, to an on-premises broadcasting service apparatus for selectively mixing and transmitting a plurality of analog and digital audio data and digital audio data stored in a storage device.

In business buildings such as corporations, government offices, hotels, condominiums or schools, educational buildings are used to deliver major messages to members in order to deliver important messages to members. For example, the broadcasting manager transmits audio data related to the main routine notification, fire training notification, or listening evaluation performance to the speakers provided in each classroom using the campus broadcasting system.

On the other hand, a conventional premises broadcasting system may mix a plurality of audio data into one audio data and output the same to a speaker.

1 is a diagram showing the configuration of a conventional premises broadcasting system.

Referring to FIG. 1, the mixing apparatus 110 includes a plurality of input terminals, and when the audio data is input through any one of the input terminals, the mixing apparatus 110 transmits the audio data to the audio encoding apparatus 120, together with itself. A plurality of audio splitters 141, 142, 143 are connected.

The audio distributors 141, 142, and 143 transmit the audio data received from the mixing apparatus 110 to a plurality of speakers connected to the audio distributor, so that the audio data is output through the corresponding speakers.

The audio encoding apparatus 120 encodes the audio data received from the mixing apparatus 110 and transmits the encoded audio data to the audio streaming apparatus 130, and the audio streaming apparatus 130 transmits the encoded audio data to the intranet 150. The audio data is output through a terminal connected to the intranet 150.

On the other hand, the audio encoding device 120 stores a time signal source for notifying the start or end of the class, and is electrically connected to the audio input terminal of the mixing device 110. In particular, the audio encoding apparatus 120 counts the time at which the time signal source is transmitted, and transmits the time signal source to the audio input terminal of the mixing apparatus 110 when the corresponding time arrives. Then, the mixing apparatus 110 mixes the currently transmitted audio data with the time signal source, and transmits the mixed audio data to the audio distributors 141, 142, and 143 and the audio encoding apparatus 120.

The audio distributors 141, 142, and 143 that have received the mixed audio data transmit the mixed audio data to a plurality of speakers connected thereto. In addition, the audio encoding apparatus 120 that receives the mixed audio data encodes the mixed audio data and transmits the encoded audio data to the audio streaming apparatus 130, and the audio streaming apparatus 130 transmits the mixed and encoded audio data to an intranet ( 150 to the terminal connected to.

However, even if the conventional premises broadcasting system transmits the mixed audio data through the entire broadcast, it cannot be designated and broadcast to the specific terminal or the audio distributor 600-N. That is, in the conventional premises broadcasting system, the mixed audio data cannot be designated and output to specific terminals or audio distributors 141, 142, and 143 connected to the intranet 150, and the mixed audio data is transmitted to all speakers or all terminals only. There is a problem that should be printed.

In addition, the conventional premises broadcasting system is an analog audio mixing device 110, an audio encoding device 120, a streaming server 130 and the like to provide an audio broadcast service to the members, maintenance is very difficult, broadcast There is also a problem that the operation for the device is inconvenient.

The present invention has been proposed to solve such a conventional problem, and an object of the present invention is to provide an on-premises broadcasting service apparatus that transmits mixed audio data to a designated audio distributor or broadcast receiving terminal.

Another object of the present invention is to provide an on-premises broadcasting service apparatus for determining whether or not mixing audio data and selectively mixing and transmitting a plurality of audio data when a plurality of audio data are received.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

An on-premises broadcasting service apparatus supporting selective audio mixing according to the present invention for achieving the above object comprises: an audio input unit having a plurality of audio input terminals; A storage unit storing a mixing matrix in which at least one output path is recorded corresponding to each input signal line; And forming an input signal line corresponding to each input terminal of the audio input unit. When audio data is input from the audio input unit, the output path corresponding to the input signal line to which the audio data is input is checked in the mixing matrix of the storage unit. The audio data is output to the output path, and whether or not the output path designated as the output path of the plurality of audio data exists based on the mixing matrix of the storage unit, and if present, the plurality of audio data are mixed to mix the specified output path. It characterized in that it comprises an audio mixing control unit for sending out.

The present invention has the advantage of selectively mixing some audio data of which a destination is overlapped among a plurality of audio data, and accurately transmitting the mixed audio data to a broadcast receiving terminal or an output device designated as a destination.

In addition, the present invention has the advantage of providing a user with a broadcast service without duplication in the standby broadcast means by duplexing the broadcast service device, even if a failure occurs in the active broadcast means.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention. And shall not be construed as limited to such matters.
1 is a diagram showing the configuration of a conventional premises broadcasting system.
2 is a diagram illustrating a configuration of a premises broadcasting system according to an embodiment of the present invention.
3 is a diagram illustrating a configuration of an audio mixing server 300 according to an embodiment of the present invention.
4 is a diagram illustrating a mixing matrix, according to an embodiment of the present invention.
5 is a diagram illustrating a mapping table in which terminal identification information is recorded corresponding to each input signal line according to an embodiment of the present invention.
6 is a flowchart illustrating a method of selectively mixing and transmitting audio data in an audio mixing server according to an embodiment of the present invention.
7 is a flowchart illustrating a method of selectively mixing and transmitting audio data in an audio mixing server according to another embodiment of the present invention.
8 is a flowchart illustrating a method of selectively mixing and transmitting audio data in an audio mixing server according to another embodiment of the present invention.
9 is a diagram illustrating a configuration of a redundant audio mixing server according to another embodiment of the present invention.
FIG. 10 is a flowchart illustrating a method of providing a broadcast service on behalf of an active broadcast means by a standby broadcast means of a redundant audio mixing server according to another embodiment of the present invention.

The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating a configuration of a premises broadcasting system according to an embodiment of the present invention.

As shown in FIG. 2, the premises broadcasting system according to an exemplary embodiment of the present invention includes a plurality of broadcast receiving terminals 200 -N, an audio mixing server 300, a broadcast control server 400, and an input device 500-. N) and audio distributor 600-N. Here, the audio mixing server 300, the broadcast control server 400, and the plurality of broadcast receiving terminals 200 -N communicate with each other through an intranet 700, which is an internal network.

Each of the broadcast receiving terminals 200 -N has unique identification information (ie, broadcast receiving terminal ID) and performs a function of receiving and reproducing packetized audio data transmitted from the audio mixing server 300. The broadcast receiving terminal 200-N is equipped with a speaker or connected to the speaker, and outputs audio data to the speaker.

The broadcast control server 400 provides a broadcast content to the audio mixing server 300 and performs a function of editing a service scenario for a broadcast service transmitted from the audio mixing server 300. That is, the broadcast control server 400 serves to provide a scenario related to time broadcast, broadcast, emergency broadcast, reserved broadcast, and group broadcast to the audio mixing server 300. In addition, the broadcast control server 400 communicates with the audio mixing server 300 that provides a selective mixing function, real-time volume control of the audio input, ON / OFF control for the audio input, ON / OFF for independent audio input It performs functions such as control, selection control of a mixing bus for mixing audio data, and transmits data by an operation of a broadcast manager to the audio mixing server 400 in real time.

Each input device 500-N transmits analog audio data or digital audio data to the audio mixing server 300. The input device 500-N includes analog-based input means such as a microphone and an analog tape reproducing apparatus, or a compact disc. Digital-based input means such as a playback device and an MP3 (MPEG Audio Layer-3) playback device are adopted. The input device 500 -N is connected to any one of a plurality of input terminals provided in the audio mixing server 300.

The audio distributor 600 -N is a device for distributing audio data to a plurality of speakers and is connected to any one of a plurality of output terminals provided in the audio mixing server 300. The audio splitter 600-N is an apparatus that supports analog signals or digital signals, and distributes analog audio data or digital audio data to a plurality of speakers connected thereto. On the other hand, when the audio distributor 600-N receives the speaker output identification list from the audio mixing server 300, the audio distributor 600-N distributes the audio data only to the speaker corresponding to the output identification list among a plurality of speakers connected thereto.

The audio mixing server 300 provides the mixed audio data selectively to the broadcast receiving terminal 200-N connected to the intranet 700 and simultaneously provides the audio data to the audio distributor 600-N. do. That is, when the audio mixing server 300 receives audio data from the broadcast control server 400, the audio mixing server 300 selectively transmits the mixed audio data to a plurality of broadcast receiving terminals 200 -N connected to the intranet 700. The digital audio mixing data is sent to the audio distributor 600-N. Similarly, when the audio mixing server 300 receives audio data from a specific input device 500 -N connected to an input terminal, the audio mixing server 300 selectively mixes the audio data to the audio distributor 600-N or the intranet 700. Transmitted to the connected broadcast receiving terminal (200-N).

In particular, the audio mixing server 300 recognizes the identification information of the designated broadcast receiving terminal 200-N, and transmits the audio data to the broadcast receiving terminal 200-N. In addition, the audio mixing server 300 may be a broadcast receiving terminal 200-N or an audio distributor 600- based on a broadcast scenario (for example, a time signal broadcast scenario or a group broadcast scenario) received from the broadcast control server 400. N) transmit audio data. For example, when the audio mixing server 300 receives the reserved broadcast scenario from the broadcast control server 400, the audio mixing server 300 counts the reserved time and then transmits the corresponding audio data to the broadcast receiving terminal 200-N or the audio distributor 600-. N).

Meanwhile, when new second audio data is received while transmitting the first audio data to at least one broadcast receiving terminal 200 -N or the audio distributor 600 -N, the audio mixing server 300 receives the first audio data. The audio data and the second audio data are selectively mixed to transmit the mixed audio data to the broadcast receiving terminal 200-N or the audio distributor 600-N.

Hereinafter, the premises broadcasting service method and apparatus for selectively mixing and transmitting audio data according to the present invention will be described in detail with reference to FIGS. 3 to 8.

3 is a diagram illustrating a configuration of an audio mixing server 300 according to an embodiment of the present invention.

As shown in FIG. 3, the audio mixing server 300 according to an exemplary embodiment of the present invention includes an audio input unit 310, a packet receiver 320, an audio output unit 330, a packet transmitter 340, and a storage unit. The unit 350 and the audio mixing control unit 360 are included.

The audio input unit 310 includes a plurality of input terminals and performs a function of receiving analog or digital based audio data from the input apparatus 500 -N through the input terminals. That is, each input terminal of the audio input unit 310 is connected to the input device 500-N through a cable, and the input device 500-N receives the audio data input from the user through the cable. Forward to 310. In addition, the audio input unit 310 forms an audio mixing processor 360 and input signal lines IN1 to IN4 corresponding to each input terminal. Each of the input signal lines is provided with unique identification information.

The audio output unit 330 includes a plurality of output terminals OUT1 to OUT4, which are audio output paths, and transmits audio data to the audio distributor 600 -N through the respective output terminals. In other words, each output terminal provided in the audio output unit 330 is connected one-to-one with the audio splitter 600-N through a cable, and the corresponding audio splitter 600-N is the audio data transmitted from the audio output unit 330. To multiple speakers connected to it. Each output terminal of the audio output unit 330 is given unique identification information.

The packet receiver 320 is connected to the intranet 700 and communicates with the broadcast receiving terminal 200 -N or the broadcast control server 400. In particular, the packet receiver 320 receives broadcast content including audio data, broadcast receiving terminal identification information, input signal line identification information, and output terminal identification information (ie, output path identification information) from the broadcast control server 400. Transfer to the audio mixing control unit 360. Unique identification information IN8 is provided to an input signal line formed between the packet receiver 320 and the audio mixing controller 360.

The packet transmission unit 340 is connected to the intranet 700 and generates audio data received by the audio mixing control unit 360 into a plurality of packets having a predetermined size, and generates the packets according to the broadcast receiving terminal 200-N. To send).

The storage unit 350 stores various broadcast contents such as time signals, listening evaluation sounds, alarm sounds, and the like. The broadcast content of the storage unit 350 includes broadcast receiver terminal identification information, input signal line identification information, output terminal identification information, and audio data. In addition, the storage unit 350 stores broadcast scenario information such as a scheduled broadcast time and an audio broadcast schedule.

In particular, the storage unit 350 stores a mixing matrix on which the audio mixing control is based and a mapping table in which terminal identification information is recorded corresponding to each of the input signal lines IN1 to IN8.

4 is a diagram illustrating a mixing matrix, according to an embodiment of the present invention.

As illustrated in FIG. 4, the storage unit 350 stores a mixing matrix in which output path OUT1 to OUT4 information is recorded corresponding to each input signal line. In other words, the mixing matrix of the storage unit 350 stores data for determining which output paths OUT1 to OUT4 to output audio data received from the respective input signal lines IN1 to IN8. In FIG. 4, the number '1' represents an ON state, and the number '0' represents an OFF state. In FIG. 4, the audio data input from the input signal line 6 (IN6) is output to the output terminal 3 (OUT3). In addition, in FIG. 4, audio data simultaneously input from the input signal lines 1, 3, 5, and 8 (IN1, IN3, IN5, and IN8) are mixed into one audio data to be output to the audio output terminal 1 (ie, OUT1). Is output. Such a mixing matrix may be set by an administrator and may be changed from time to time based on input signal line identification information and output terminal identification information included in broadcast content.

5 is a diagram illustrating a mapping table in which terminal identification information is recorded corresponding to each input signal line according to an embodiment of the present invention.

As illustrated in FIG. 5, the storage unit 350 stores a mapping table in which identification information of the broadcast receiving terminal 200 -N is recorded in correspondence with identification information of an input signal line.

Here, each of the input signal line identification information IN1 to IN8 corresponds to each input terminal of the audio input unit 310 and corresponds to the input signal lines IN1 to IN4 and the packet receiving unit 320 formed with the audio input unit 310. Through the broadcast content is respectively given to the signal line (IN8) is received. In addition, some of the input signal line identification information IN1 to IN8 IN5 to IN7 are reserved as input signal lines of broadcast content stored in the storage 350. In this case, the audio mixing controller 360 checks the input signal line identification information included in the broadcast content, and considers that the broadcast content is received as the corresponding input signal line.

Referring to FIG. 5, the input signal line 1 IN1 represents an input signal path for audio data received from a microphone through the input signal line 1 IN1 of the audio input unit 310. In addition, the input signal lines 5 (IN5) to 7 (IN7) represent input signal paths for broadcast contents stored in the storage 350. That is, input signal line identification information is recorded in each of the previously stored broadcast contents, and the audio mixing server 300 broadcast contents stored in the storage unit 350 from the input signal line 5 (IN5) to the input signal line 7 (IN7). Make a reservation for it. Also, the input signal line 8 IN8 represents an input signal path of broadcast content received through the intranet 700, that is, an input signal path of audio data received through the packet receiver 320.

In addition, in the mapping table of the storage unit 350, the identification information list of the broadcast receiving terminal 200-N is recorded corresponding to the input signal line identification information IN1 to IN8. For example, '2st0021' and '2st0022' may be recorded in the mapping table of the storage unit 350 as the broadcast receiving terminal identification information corresponding to the input signal line 2 (IN2). Meanwhile, the broadcast receiver terminal identification information may not be recorded in the mapping table of the storage 350 according to the type of the input signal line. In Fig. 5, terminal identification information is not recorded in input signal lines 5 (IN5) to 8 (IN8), and only option information (optional) is recorded. That is, when the input signal line indicates a path received through the intranet 700 or is reserved for the broadcast content of the storage 350, the broadcast receiving terminal identification information is added to the mapping table in correspondence with the corresponding input signal line identification information. It is not recorded. Here, when the broadcast receiver terminal identification information is not recorded, the identification information of the broadcast receiver terminal 200-N corresponding to the input signal line is designated according to the user's selection.

The audio mixing control unit 360 controls each component of the audio mixing server 300 to provide audio data to the broadcast receiving terminal 200 -N connected to the intranet 700, and to connect the plurality of output terminals with audio. It serves to provide audio data to the distributor 600-N.

In detail, when the packet receiving unit 320 receives the broadcast content, the audio mixing control unit 360 checks the broadcast receiving terminal identification information and the output terminal identification information included in the broadcast content. In addition, the audio mixing controller 360 transmits the audio data included in the broadcast content to the broadcast receiving terminal 200-N corresponding to the broadcast receiving terminal identification information using the packet transmitter 340, and outputs the audio. The audio data is transmitted to the audio splitter 600-N connected to the output terminal identification information by using 330.

In addition, when the audio mixing controller 360 receives the audio data from the specific input device 500 -N connected to the input terminal of the audio input unit 310, the audio mixing control unit 360 refers to the mapping table of the storage unit 350 to convert the audio data. It is sent to the output terminal of the output unit 330, and is also transmitted to the designated broadcast receiving terminal 200-N by using the packet transmitter 340. At this time, the audio mixing controller 360 refers to the mixing matrix and the mapping table of the storage 350 and transmits the audio data input from the input terminal to only one or more output terminals or the broadcast receiving terminal 200-N. . Preferably, the audio mixing control unit 360 encodes the audio data and transmits the encoded audio data to the broadcast receiving terminal 200 -N through the packet transmitter 340.

In addition, the audio mixing controller 360 transmits the audio data to the broadcast receiving terminal 200-N or the audio distributor 600-N based on the broadcast scenario (for example, the time signal broadcasting scenario and the group broadcasting scenario). For example, when the audio mixing control unit 360 receives the broadcast content including the reserved broadcast scenario from the broadcast control server 400, the audio mixing control unit 360 counts the reserved time and transmits the corresponding audio data to the broadcast receiving terminal 200-N or the like. Transmit to audio splitter 600-N.

On the other hand, when audio data is received from a specific input signal line while specific audio data is being transmitted, the audio mixing control unit 360 refers to the mixing matrix of the storage unit 350 and checks whether the audio object to be mixed exists. If present, a plurality of audio data are mixed into one and the mixed audio data is transmitted to a specific output terminal of the audio output unit 330 or the packet transmission unit 340 is transmitted to a specific broadcast receiving terminal 200-N. .

In addition, the audio mixing controller 360 adjusts the volume of the audio data input through each input signal line, and also adjusts the volume of the audio data to be output to each output terminal of the audio output unit 330. Adjustment module 360a. The volume adjusting module 360a has volume increase information for each input signal line IN1 to IN8, and increases or decreases the volume of audio data received from each input signal line based on the volume increase information. Let's do it. For example, when the volume increase / decrease information of the input signal line 1 (IN1) is '+10 dB', the volume adjusting module 360a increases the volume of audio data received from the input signal line 1 (IN1) by 10 dB. In addition, the volume adjustment module 360a stores volume increase information for each output terminal of the audio output unit 330, and increases the volume of audio data to be sent to each output terminal based on the volume increase information. Or reduce it. For example, if the volume increase / decrease information of the output terminal 2 (OUT2) is '-5 dB', the volume adjusting module 360a reduces the volume of audio data to be output to the output terminal 2 (OUT2) by 5 dB.

6 is a flowchart illustrating a method of selectively mixing and transmitting audio data in the audio mixing server 300 according to an exemplary embodiment of the present invention.

In the description with reference to FIG. 6, the audio mixing server 300 is broadcasting receiver terminal 1 (200-1) while transmitting the first audio data to broadcast receiver terminal 1 (200-1) and audio distributor 1 (600-1). ) And broadcast content including the identification information of the broadcast receiving terminal 2 (200-2), the identification information of the output terminal 1 (OUT1) and the output terminal 2 (OUT2), and the second audio data from the broadcasting control server 400. The assumption is made.

Referring to FIG. 6, the audio mixing controller 360 of the audio mixing server 300 broadcasts the first audio data using the packet transmitter 340 and the audio output unit 330 to the broadcast receiving terminal 1 200-1. While transmitting to the audio distributor 1 600-1, the packet receiver 320 receives the broadcast content including the second audio data, the output terminal identification list, and the terminal identification list from the broadcast control server 400 (S601). , S603, S605).

Then, the audio mixing controller 360 checks the output terminal identification information (ie, OUT1 and OUT2) included in the broadcast content, and checks the identification information of the input signal line IN8 in which the broadcast content is received (S607). ). Next, the volume adjusting module 360a of the audio mixing control unit 360 increases or decreases the volume of the second audio data included in the broadcast content based on previously stored volume increase / decrease information for each input signal line.

Subsequently, the audio mixing controller 360 records the output terminal OUT1 and OUT2 activation information in the mixing matrix of the storage 350 in correspondence with the identified input signal line identification information IN8. That is, as the path through which the broadcast content is received is 'IN8' and 'OUT1 and OUT2' are recorded as output terminal identification information in the broadcast content, the audio mixing control unit 360 corresponds to the input signal line 'IN8' to 'OUT1'. Activation information (ie, number 1) of 'and' OUT1 'is recorded in the mixing matrix of the storage 350.

Next, the audio mixing control unit 360 checks whether or not mixing target audio data exists based on the activation information of the mixing matrix (S609). That is, the audio mixing controller 360 checks whether the audio data output to the specific output terminal is duplicated based on the activation information recorded in the mixing matrix of the storage 350. In other words, as the new second audio data is received, the audio mixing controller 360 stores whether the audio mixing controller 360 exists in other audio data simultaneously outputted on the same output path (that is, the output terminal) as the first audio data. In the mixing matrix. In addition, the audio mixing control unit 360 confirms the broadcast receiving terminal identification information included in the broadcast content and is designated as the destination of the second audio data among the broadcast receiving terminal 1 200-1 currently receiving the first audio data. Check whether the terminal exists.

Next, if there is a broadcast receiving terminal 200-N designated as a destination of both the first audio data and the second audio data, or the output terminal designated as an output path of both audio data, The first audio data and the second audio data are determined as audio data to be mixed. In FIG. 6, the broadcast receiving terminal 1 600-1 and the audio splitter 1 600-1 are represented as a device that simultaneously receives the first audio data and the second audio data. On the other hand, if there is no audio data to be mixed, the audio mixing controller 360 transmits the second audio data included in the broadcast content to the corresponding broadcast receiving terminal 200-N using the packet transmitter 340. The second audio data is transmitted to a specific output terminal of the audio output unit 330.

If there is audio data to be mixed, the audio mixing controller 360 mixes a plurality of audio data (ie, first audio data and second audio data) to be mixed into one audio data (S611). Next, the audio mixing controller 360 transmits the mixed audio data to the broadcast receiving terminal 1 200-1 designated as a destination of both the first audio data and the second audio data using the packet transmitter 340. (S613). The audio mixing control unit 360 transmits the mixed audio data to the output terminal 1 OUT1 of the audio output unit 330 which is designated as an output path of both the first audio data and the second audio data. 600-1), the mixed audio data is transmitted (S615).

In addition, the audio mixing control unit 360 uses the packet transmitter 340 to transmit the second audio data to the broadcast receiving terminal 2 200-2 receiving only the second audio data without receiving a plurality of audio data in duplicate. Transmit (S617). The audio mixing control unit 360 transmits the second audio data to the output terminal 2 OUT2 of the audio output unit 330 designated only as the output path of the second audio data, thereby transmitting the second audio data to the audio distributor 2 600-2. Audio data is transmitted (S619). At this time, the volume adjusting module 360a of the audio mixing control unit 360 increases or decreases the volume of the second audio data output to the output terminal 2 OUT2 based on previously stored volume increase / decrease information for each output terminal. .

Meanwhile, the broadcast content received in step S605 may include a speaker output identification list. In this case, the audio mixing controller 360 transmits the second audio data including the speaker output identification list to the output terminal 2 OUT2 of the audio output unit 330, and the audio distributor connected to the output terminal 2 OUT2. 2 (600-2) distributes the second audio data only to the speaker corresponding to the speaker output identification list.

7 is a flowchart illustrating a method of selectively mixing and transmitting audio data in the audio mixing server 300 according to another embodiment of the present invention.

In the description with reference to FIG. 7, the audio mixing server 300 transmits the reserved second audio data while transmitting the first audio data to the broadcast receiving terminal 1 200-1 and the audio distributor 1 600-1. The assumption is made.

Referring to FIG. 7, the storage 350 pre-arranges a reserved broadcast content including a broadcast time, an identification list of a broadcast receiving terminal 200 -N, an output terminal identification list, input signal line identification information, and second audio data. Store in

In this state in which the reserved broadcasting content is stored, the audio mixing controller 360 of the audio mixing server 300 broadcasts the first audio data using the packet transmitter 340 and the audio output unit 330. -1) and to the audio distributor 1 600-1 (S701, S703). Subsequently, the audio mixing controller 360 checks whether the broadcast time of the reserved broadcast content has arrived, and if so, extracts the reserved broadcast content from the storage 350 (S705 and S707).

Next, the audio mixing controller 360 checks output terminal identification information (ie, OUT1 and OUT2) and input signal line identification information included in the reserved broadcast content (S709). Here, since the audio data included in the reserved broadcast content is stored in the audio mixing server 300, an additional signal line is not formed. Accordingly, input signal line identification information is recorded in the reserved broadcast content. That is, when the broadcast manager inputs the broadcast content with the reserved time to the audio mixing server 300, the broadcast manager inputs the input signal line identification information for the broadcast content. On the other hand, if the input signal line identification information is confirmed by the audio mixing control unit 360, the volume adjustment module 360a is based on the volume increase / decrease information for each input signal line stored in advance, Increase or decrease the volume.

Subsequently, the audio mixing controller 360 records the output terminal activation information in the mixing matrix of the storage 350 in correspondence with the identified input signal line identification information. Next, the audio mixing controller 360 checks whether or not mixing target audio data exists based on the activation information of the mixing matrix (S711). That is, the audio mixing controller 360 checks whether the audio data output to the specific output terminal is duplicated based on the activation information recorded in the mixing matrix of the storage 350.

The audio mixing control unit 360 checks the identification information of the broadcast receiving terminal 200-N included in the reserved broadcast content, and selects among the broadcast receiving terminals 200-N currently receiving the first audio data. 2 Check whether there is a terminal designated as audio data as a destination. Subsequently, if there is a broadcast receiving terminal 200-N designated as a destination of both the first audio data and the second audio data, or the output terminal designated as the output path of both audio data, The first audio data and the second audio data are determined as audio data to be mixed. In FIG. 7, the broadcast receiving terminal 1 600-1 is a terminal for receiving first audio data and second audio data, and the output terminal 1 OUT1 is a path through which the two audio data are output.

If it is determined that a plurality of audio data to be mixed exists, the audio mixing control unit 360 mixes the plurality of audio data (that is, the first audio data and the second audio data) into one audio data (S713). ). Next, the audio mixing controller 360 transmits the mixed audio data to the broadcast receiving terminal 1 200-1 designated as a destination of both the first audio data and the second audio data using the packet transmitter 340. (S715). The audio mixing control unit 360 transmits the mixed audio data to the output terminal 1 OUT1 of the audio output unit 330 which is designated as an output path of both the first audio data and the second audio data. 600-1), the mixed audio data is transmitted (S717).

In addition, the audio mixing control unit 360 does not receive a plurality of audio data by using the packet transmission unit 340, and receives only the second audio data included in the reserved broadcasting content. In operation S719, the second audio data is transmitted. In addition, the audio mixing control unit 360 transmits the second audio data to the output terminal 2 OUT2 of the audio output unit 330 designated only as the output path of the second audio data, thereby transmitting the second audio data to the audio distributor 2 600-2. 2 Delivers audio data (S721). At this time, the volume adjusting module 360a of the audio mixing control unit 360 increases or decreases the volume of the second audio data output to the output terminal 2 OUT2 based on previously stored volume increase / decrease information for each output terminal. .

The reserved broadcast content may include a speaker output identification list. In this case, the audio mixing controller 360 transmits the second audio data including the speaker output identification list to the output terminal 2 OUT2 of the audio output unit 330, and the audio distributor connected to the output terminal 2 OUT2. 2 (600-2) distributes the second audio data only to the speaker corresponding to the speaker output identification list.

8 is a flowchart illustrating a method of selectively mixing and transmitting audio data in the audio mixing server 300 according to another embodiment of the present invention.

In the description with reference to FIG. 8, the audio mixing server 300 transmits the first audio data to the broadcast receiving terminal 1 200-1 and the audio distributor 1 600-1 and simultaneously broadcast receiving terminal 2 200-2. And the third audio data transmitted to the broadcast receiver terminal 1 (200-1) and the audio distributor 1 (600-2) while transmitting the second audio data to the audio distributor 2 (600-2). Assume that we receive from -1).

Referring to FIG. 8, the audio mixing control unit 360 of the audio mixing server 300 uses the packet transmitter 340 and the audio output unit 330 to transmit first audio data to the broadcast receiving terminal 1 200-1. The audio input unit 310 is connected to an external input device during transmission to the audio splitter 1 (600-1) and the second audio data to the broadcast receiver terminal 2 (200-2) and the audio splitter 2 (600-2). The third audio data is received from the first 500-1 and transmitted to the audio mixing controller 360 (S801, S803, S805, S807, and S809).

The audio mixing controller 360 that receives the third audio data from the input apparatus 1 500-1 checks the identification information (ie, IN1) of the input signal line from which the third audio data is received (S811). Next, the volume adjusting module 360a of the audio mixing controller 360 increases or decreases the volume of the third audio data based on previously stored volume increase / decrease information for each input signal line.

Subsequently, the audio mixing controller 360 checks the activated output terminal identification information (ie, OUT1) corresponding to the identified input signal line identification information IN3 from the mixing matrix of the storage 350. In other words, since the external input apparatus 500 -N only transmits the audio data to the audio mixing server 300, the external input apparatus 500 -N cannot transmit additional terminal identification list, output terminal identification information, and the like to the audio mixing server 300. The mixing controller 360 checks output terminal identification information (ie, OUT1), which is a path through which the third audio data is output, based on the mixing matrix of the storage unit 350 set by the manager. In addition, the audio mixing controller 360 checks the broadcasting receiver terminal identification information corresponding to the input signal line identification information IN1 in the mapping table of the storage unit 350 (S813).

Next, the audio mixing controller 360 checks whether the mixing target audio data exists based on the activation information of the mixing matrix of the storage 350 (S815). In detail, the audio mixing controller 360 determines whether the audio data output to the specific output terminal is duplicated based on the activation information of the mixing matrix of the storage 350. In other words, as the new audio data (ie, the third audio data) is received, the audio mixing controller 360 is present in other audio data simultaneously output on the same output path (that is, the output terminal) as the third audio data. Whether or not it is determined based on the activation information of the mixing matrix. In addition, the audio mixing controller 360 designates the destination of the third audio data among the broadcast receiving terminals 200 -N currently receiving the first audio data or the second audio data based on the extracted broadcasting receiver terminal identification information. Check whether the terminal exists.

Subsequently, if there is a broadcast receiving terminal 200-N designated as a destination of all the plurality of audio data or an output terminal designated as an output path of the plurality of audio data, the audio mixing control unit 360 selects one of the plurality of audio data. The audio data is mixed (S817). In FIG. 8, an output terminal 1 OUT1 is designated as an output path of first audio data and third audio data, and a broadcast receiving terminal 1 200-1 is designated as a destination terminal of the two audio data.

Next, the audio mixing controller 360 transmits the mixed audio data to the broadcast receiving terminal 1 200-1 designated as a destination of the first audio data and the third audio data using the packet transmitter 340. (S819). The audio mixing control unit 360 transmits the mixed audio data to the output terminal 1 OUT1 of the audio output unit 330 which is designated as an output terminal of both the first audio data and the third audio data. 600-1), the mixed audio data is transmitted (S821). At this time, the audio mixing control unit 360 continuously transmits the second audio data to the broadcast receiving terminal 2 (200-2) and the output terminal 2 (OUT2).

On the other hand, the audio mixing server 300 according to the present invention is redundant, even if the broadcast interruption occurs in the active broadcast means providing the service, the standby broadcast means provides a normal broadcast service to the users.

9 is a diagram illustrating a configuration of a redundant audio mixing server 300 according to another embodiment of the present invention.

Referring to FIG. 9, the redundant audio mixing server 300 according to another embodiment of the present invention may include an active broadcast means 950a, a standby broadcast means 950b, an audio input unit 910, a packet receiver 920, An audio output unit 930 and a packet transmitter 940 are included.

The audio input unit 910, the packet receiver 920, the audio output unit 930, and the packet transmitter 940 operate in the same manner as described with reference to FIG. 3, and the active broadcast means 950a and the standby broadcast means 950b. Is shared by). In addition, the audio input unit 910 forms the same input signal lines IN1 to IN4 as the first audio mixing control unit 952a and the second audio mixing control unit 952b corresponding to each input terminal. The audio data received from the input apparatus 500 -N is transmitted to the first audio mixing control unit 952a of the active broadcasting unit 950a and the second audio mixing control unit 952b of the standby broadcasting unit 950b, respectively. . In addition, the packet receiver 920 forms the same input signal line IN8 as the first audio mixing controller 952a and the second audio mixing controller 952b, and transmits the packet data received through the intranet 700 to the first packet. The data is transmitted to the audio mixing controller 952a and the second audio mixing controller 952b, respectively.

The first storage unit 951a of the active broadcast unit 950a and the second storage unit 952a of the standby broadcast unit store the same data. In detail, the first storage unit 951a and the second storage unit 952a store various types of data, such as a mixing matrix (see FIG. 4), a mapping table (see FIG. 5), broadcast content, and the like. In particular, the first storage unit 951a and the second storage unit 952a store the same audio data to which the time stamp information is added.

The first audio mixing control unit 952a of the active broadcasting unit 950a and the second audio mixing control unit 952b of the standby broadcasting unit 950b perform the functions of the audio mixing control unit 360 described with reference to FIG. 3. In addition, when the first audio mixing control unit 952a and the second audio mixing control unit 952b store the audio data in the storage units 951a and 951b, the first audio mixing control unit 952a and the second audio mixing control unit 952b divide the audio data into a predetermined size (for example, 10 Kbytes). The time stamps, which are a series of time information, are added to each of the divided audio data and stored in the storage units 951a and 951b, respectively. That is, the redundant audio mixing control units 952a and 952b divide the audio data into a plurality of playback sections having a predetermined time interval, and sequentially add a series of time stamps to the divided audio data to store the storage units 951a and 952b. Store each in.

The first duplexer 953a included in the active broadcast means 950a continuously transmits the state information of the active broadcast means 950a to the second duplicater 953b of the standby broadcast means 950b. . In addition, the second redundant unit 953b of the standby broadcast means 950b determines whether a failure occurs in the active broadcast means 950a based on the state information of the active broadcast means 950a received from the first redundant part 953a. Perform the function to check. In detail, the first redundant unit 953a acquires state information of hardware and software included in the active broadcast means 950a, and transmits the state information to the second duplicater 953b of the standby broadcast means 950b.

In addition, the second redundant unit 953b of the standby broadcast unit 950b analyzes the state information received from the first redundant unit 953a, and if it is determined that a failure occurs in the active broadcast unit 950a, the standby unit The standby broadcast means 950b performs the broadcast service by instructing the second audio mixing control portion 952b of the broadcast means 950b to activate the service.

Hereinafter, an operation of the redundant audio mixing server 300 will be described in detail with reference to FIG. 10.

10 is a flowchart illustrating a method of providing a broadcast service on behalf of the active broadcast means 950a in the standby broadcast means 950b of the redundant audio mixing server 300 according to another embodiment of the present invention. .

In the description with reference to FIG. 10, the first audio data is data stored in each of the first storage unit 951a and the second storage unit 951b, and the second audio data is a real time received from the external input device 500 -N. It is assumed that the data is audio data.

Referring to FIG. 10, when the first audio mixing control unit 952a of the active broadcasting unit 950a receives a broadcast content from the broadcast control server 400, the first audio mixing control unit 952a receives the first audio data included in the broadcast content at a predetermined size (eg, 10 Kbytes), and time stamp information, which is a series of time information, is sequentially added to the divided plurality of first audio data and stored in the first storage unit 951a. Similarly, the second audio mixing control unit 952b of the standby broadcasting means 950b divides the first audio data into a predetermined size, and sequentially stores time stamp information, which is a series of time information, into the plurality of divided first audio data. In addition, it is stored in the second storage unit 952a. In other words, the plurality of first audio data in which the first storage unit 951a of the active broadcast unit 950a and the second storage unit 952a of the standby broadcast unit 950b are divided into a predetermined size and time stamp information is recorded. Are stored identically to each other.

In this state of storing the same first audio data, the first audio mixing control unit 952a of the active broadcasting unit 950a, when the broadcast time of the broadcast content arrives, outputs terminal identification information and broadcast included in the content. Check the receiving terminal identification information. Subsequently, the first audio mixing control unit 952a of the active broadcasting unit 950a divides and extracts first audio data stored in the first storage unit 951a (S1001).

Next, the first audio mixing controller 952a sequentially transmits the divided first audio data to the output terminal OUT1 of the audio output unit 930 corresponding to the output terminal identification information (S1003). In addition, the first audio mixing controller 952a sequentially transmits the divided first audio data extracted from the first storage unit 951a to the broadcast receiving terminal 1 200-1 by using the packet transmitter 940. (S1005). In this case, the first audio mixing controller 952a may check the reproduction order of the first audio data based on the time stamp information added to each first audio data, and output the first audio data according to the reproduction order. The divided first audio data is sequentially transmitted to the output terminal 1 (OUT1) or the broadcast receiving terminal 1 (200-1).

When the broadcast service is provided by the active broadcast means 950a, the first duplexer 953a of the active broadcast means 950a obtains state information such as CPU, memory, etc. of the active broadcast means 950a. The time stamp information of the second audio data transmitted from the active broadcasting means 950a is continuously checked. The first redundant unit 953a continuously transmits the acquired state information of the active broadcast means 950a and the time stamp information of the first audio data to the second redundant portion 953b of the standby broadcast means 950b. S1007).

While the first audio mixing control unit 952a of the active broadcasting unit 950a transmits the first audio data stored in the first storage unit 951a to the audio distributor 600-N or the broadcast receiving terminal 200-N. The audio input unit 910 receives second audio data from an external input device 500 -N connected thereto (S1009). Then, the audio input unit 910 is configured to convert the second audio data into a first audio mixing controller 952a and a second audio mixing controller through input signal lines respectively formed with the active broadcasting means 950a and the standby broadcasting means 950b. 952b).

Then, the second audio mixing controller 952b of the standby broadcasting means 950b maintains a service standby state in which the second audio received from the audio input unit 910 is received but not outputted, while the active broadcasting means 950a is used. The second audio mixing controller 952b checks the identification information of the input signal line from which the second audio data is received, and outputs the activated terminal identification information corresponding to the input signal line identification information to the first storage unit 951a. In the mixing matrix.

Next, the first audio mixing controller 952a determines whether the audio data output to the specific output terminal is duplicated based on the mixing matrix of the first storage 951a. In addition, the first audio mixing controller 952a extracts the broadcast receiver terminal identification information corresponding to the input signal line identification number from the mapping table of the first storage unit 951a and currently receives the first audio data. It is determined whether the receiving terminal 1 200-1 receives the second audio data.

If the first audio mixing controller 952a has a broadcast receiving terminal 200-N designated as a destination of both the first audio data and the second audio data, or an output terminal designated as an output path of all of the plurality of audio data, The first audio data and the second audio data are determined as data to be mixed. In FIG. 10, the broadcast receiving terminal 1 200-1 is represented as a terminal that receives both the first audio data and the second audio data.

Next, the first audio mixing controller 952a mixes the first audio data and the second audio data as a plurality of audio data to be mixed, and uses the packet transmitter 940 to mix the first audio data. Instead of the data, the mixed audio data is transmitted to the broadcast receiving terminal 1 (200-1) (S1011).

On the other hand, the second duplexer 953b of the standby broadcast means 950a continuously receives the state information of the active broadcast means 950a from the first duplicater 953a, and analyzes the state information, thereby analyzing the active broadcast means. At 950a it is continuously checked whether a failure has occurred. If it is determined that the failure occurs in the active broadcast means 950a as a result of the analysis, the second redundant unit 953b instructs the active broadcast means 950a to stop the service and activates the service in the second audio mixing controller 952. (S1013, S1015, S1017). In this case, the second duplexer 953b transfers the time stamp information last received from the first redundancy unit 953a to the second audio mixing controller 952.

The first duplexer 953a, which has been instructed to stop service by the second redundant unit 953b, instructs the first audio mixing control unit 952a to broadcast service means, and broadcast service is performed by the active broadcast means 950a. Stop it. In addition, the second audio mixing control unit 952b of the standby broadcasting unit 950a switches from the service standby state to the service activation state and is also stored in the second storage unit 951b on the basis of the transmission from the second duplexer 953b. The first audio data to be transmitted is extracted from the entire first audio data (S1019). That is, the second audio mixing control unit 952b checks the reproduction section of the first audio data provided by the active broadcasting means 950a based on the time stamp information received from the second duplexing unit 953b, and reproduces the reproduction section. Thereafter, corresponding first audio data is extracted from the second storage unit 951b.

Next, the second audio mixing controller 952b checks whether or not there is audio to be mixed based on the mixing matrix and the mapping table stored in the second storage 952a (S1021). That is, the second audio mixing controller 952b checks whether the audio data outputted to the specific output terminal is duplicated based on the activation information recorded in the mixing matrix of the second storage unit 350, and the first audio data of the first audio data. By checking whether the broadcast receiving terminal 200-N designated as the destination and the broadcast receiving terminal 200-N designated as the destination of the second audio data overlap, the broadcast receiving terminal 1 200-1 is connected to the first audio data. Confirm that the terminal receives all of the second audio data.

Subsequently, the second audio mixing controller 952b mixes the first audio data corresponding to the playback period after the time stamp and the second audio data input from the external input device 500 -N (S1023). Next, the second audio mixing controller 952b transmits the mixed audio data to the broadcast receiving terminal 1 200-1 designated as a destination of the first audio data and the second audio data using the packet transmitter 940. (S1025).

In addition, the second audio mixing control unit 952b transfers the divided first audio data corresponding to the playback section after the time stamp from the second storage unit 951b to the output terminal 1 (OUT1) of the audio output unit 930. By sequentially transmitting, the first audio data is transmitted to the audio distributor 1 600-1 in place of the active broadcasting means 950a (S1027). That is, the second audio mixing controller 952b of the standby broadcasting means 950b timestamps the playback section of the first audio data provided by the active broadcasting means 950a to the audio distributor 1 600-1 before the failure occurs. Recognizing through the information, the first audio data corresponding to the reproduction period is provided to the audio distributor 1 600-1.

Meanwhile, in the above-described embodiments, the input signal lines formed in the audio mixing server 300 are described as having eight input paths and four output paths. However, those skilled in the art will readily appreciate the present invention when two or more input signal lines and output paths exist. Will be applicable. Therefore, it is apparent that the present invention should be understood as an on-premises broadcasting service apparatus including two or more input signal lines and an output path. In addition, in the embodiments of the present invention, the broadcast control server 400 and the audio mixing server 300 have been described as being implemented independently from each other, but the present invention is not limited thereto, and the two servers 300 and 400 are integrated. Make sure it can be implemented.

While the specification contains many features, such features should not be construed as limiting the scope of the invention or the scope of the claims. In addition, the features described in the individual embodiments herein may be combined and implemented in a single embodiment. Conversely, various features described in the singular < Desc / Clms Page number 5 > embodiments herein may be implemented in various embodiments individually or in combination as appropriate.

Although the operations have been described in a particular order in the figures, it should be understood that such operations are performed in a particular order as shown, or that all described operations are performed to obtain a sequence of sequential orders, or a desired result . In certain circumstances, multitasking and parallel processing may be advantageous. It should also be understood that the division of various system components in the above embodiments does not require such distinction in all embodiments. The above-described program components and systems can generally be implemented as a single software product or as a package in multiple software products.

The method of the present invention as described above may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

200-N: Broadcast receiving terminal 300: Audio mixing server
310: audio input unit 320: packet receiving unit
330: audio output unit 340: packet transmission unit
350: storage unit 360: audio mixing control unit
400: broadcast control server 500-N: input device
600-N: Audio Splitter

Claims (7)

An on-premises broadcasting service device supporting selective audio mixing,
An audio input unit having a plurality of audio input terminals;
A storage unit storing a mixing matrix in which at least one output path activation information is recorded corresponding to each input signal line;
An input signal line is formed in correspondence with each input terminal of the audio input unit; Outputs the audio data to the output path by checking a path in the mixing matrix of the storage unit, and outputs whether there is a plurality of audio data having duplicate output paths based on the output path activation information recorded in the mixing matrix of the storage unit. An audio mixing control unit which selects a plurality of audio data having the same output path as the first mixing target audio group and mixes and transmits the audio data belonging to the first mixing target audio group into one audio data if it exists after checking for each path. ; And
And a packet receiver connected to a network and forming an input signal line with the audio mixing controller.
The audio mixing control unit,
When the broadcast content is received through the packet receiver, the output path included in the broadcast content is checked, and activation information about the identified output path is matched with the input signal line formed with the packet receiver to record in the mixing matrix of the storage unit. The output path activation information of the mixing matrix is updated, and based on the updated output path activation information of the mixing matrix, it is checked whether there is a plurality of audio data having duplicate output paths for each output path, The on-premises broadcasting service device, characterized in that a plurality of audio data having a second audio object to be selected as a mixing group and to output a single audio data. delete The method of claim 1,
The storage unit stores the second broadcast content including input signal line identification information and output path information,
The audio mixing controller checks input signal line identification information and output path information included in the second broadcast content, and activates information on the output path included in the second broadcast content in correspondence with the input signal line identification information. Is recorded in the mixing matrix of the storage unit to update the output path activation information of the mixing matrix, and whether the output path designated as the output path of the plurality of audio data exists based on the updated output path activation information of the mixing matrix is output. And if there is a specific check, the plural audio data are selected and mixed as the third mixing target audio group. The method according to claim 1 or 3,
The storage unit stores the broadcast receiver terminal identification information recorded corresponding to each input signal line,
The audio mixing controller checks whether there is a broadcast receiving terminal for receiving a plurality of audio data at the same time with reference to the broadcast receiving terminal identification information recorded in the storage unit and, if present, mixes the plurality of audio data for mixing. The on-premises broadcasting service device, characterized in that for transmitting and transmitting to the corresponding broadcast receiving terminal. The method according to claim 1 or 3,
The audio mixing control unit,
Audio volume for storing each input signal line and output path, and increasing or decreasing the volume of audio data input from each input signal line based on the volume increase information, and outputting audio to each output path. On-premises broadcasting service device characterized in that to increase or decrease the volume of the data. The method according to claim 1 or 3,
The audio mixing control unit is duplicated into a first audio mixing control unit and a second audio mixing control unit,
The first audio mixing controller is set to a service activation state to sequentially transmit the divided audio data,
The second audio mixing controller is set to a service standby state, obtains time stamp information of audio data transmitted from the first audio mixing controller, and monitors a broadcast service performed by the first audio mixing controller to monitor the broadcast service. If it is determined that the abnormality is performed, the service transition state from the service standby state to the service activation state to check the transmission section of the audio data on the basis of the obtained time stamp information to extract and transmit the audio data after this transmission section On-premises broadcasting service device. The method according to claim 6,
The second audio mixing control unit,
In addition to the extracted audio data, if the presence of an output path through which other audio data is simultaneously transmitted is determined, and if present, the premises broadcasting service comprising selecting and mixing the extracted audio data and the other audio data as a mixing target audio group. Device.

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