KR102296925B1 - Network broadcasting system - Google Patents

Abstract

The present invention is to provide a network broadcasting system which can transmit a paging broadcast by designating a specific speaker and transmit a paging broadcast through an IP phone or a smartphone. The network broadcasting system according to the present invention includes: an IP speaker system (100) which is installed at a predetermined location; a broadcast controller (200) which transmits voice information to be broadcast; an IP broadcasting server (300) which receives the voice information from the broadcasting controller (200) and transmits the same to the IP speaker (100); and an Ethernet power supply (400) which supplies power to the IP speaker system (100).

Description

Network broadcasting system {Network broadcasting system}

The present invention learns the type and distance of an object through the collection unit of the IoT-based edge end device and converts it into a database so that automatic volume adjustment is possible according to the broadcasting purpose for each object type and area by time of the corresponding speaker on the ip-based network broadcasting system. It relates to a network broadcasting system that implements it.

In general, the premises broadcasting system/public address system is a system designed to broadcast the whole, floor, or zone of a desired area in a single building such as an office building or a hotel, or an adjacent building. change is designed

On the other hand, as shown in Korean Patent Registration No. 10-0923490, the present invention relates to a public address system using a network. The public address system may include: a main controller receiving analog audio signals from a plurality of sound generating devices and providing them to a video server; It receives video signals from a plurality of image generating devices, receives a plurality of analog audio signals from the main controller, encodes the video signals and audio signals into a video stream and an audio stream, and then broadcasts locally through a network in a UDP method. a video server that transmits to the device; and a local broadcasting device distributed in each output area, each decoding and outputting a video stream and an audio stream transmitted from the video server through the network; Through real-time transmission and broadcasting, the video server transmits data in TCP/IP method when data loss occurs by UDP method so that data loss can be restored. Also disclosed is a public address system using a network that automatically switches to an analog path when a network error occurs so that public address broadcasting can be always provided.

However, in this conventional premises broadcasting system, a plurality of broadcasting equipment devices such as an audio broadcasting device, a video broadcasting device, and a studio broadcasting device are connected in a very complicated manner, so it is not easy to operate and maintain, and it can provide various broadcasting functions. There is no problem. That is, the conventional premises broadcasting system has a problem in that the installed line is very complicated and configured, and when a problem occurs in a specific line, a lot of labor is required to solve the problem. In addition, the conventional intra-premises broadcasting system cannot simultaneously receive and output a broadcast message from a plurality of broadcast devices, and cannot output a plurality of broadcast messages with priority, but only designate a broadcast message or content transmitted from a specific device. There is also the problem of uniform output from the speaker.

US 10-1021198 B1 US 10-2008-0089089 A US 10-2009-0029404 A JP 2002-077165 A US 10-2007-0092417 A

Therefore, the present invention is to solve the above problems, and through the IP speaker, the speaker can adjust the volume by time, object, space, and region, and unlimited expansion in the entire area or the same network, speaker + Easy expansion with integrated amplifier, integrated operation with existing analog system using audio bridge, paging broadcast transmission for all zones or individual or multiple specific zones, paging broadcast transmission by designating specific speakers and paging via IP phone or smartphone An object of the present invention is to provide a network broadcasting system capable of transmitting broadcasting.

A network broadcasting system according to the present invention for achieving the above object includes an IP speaker system 100 installed at a predetermined location; a broadcast controller 200 for transmitting audio information to be broadcast; and an IP broadcasting server 300 that receives the voice information from the broadcast controller 200 and transmits it to the IP speaker 100, and an Ethernet power supply 400 that supplies power to the IP speaker system 100. .

The present invention can operate an IP speaker with one network port (LAN cable) without a separate power cable, and has an effect of reducing construction costs by enabling broadcasting using various network networks such as offices and IP CCTVs built on a network basis. , There is no limit to the group configuration method, and the user can modify the group at any time without limiting the number of groups. It has the effect of increasing the convenience of the user by allowing group broadcasting by mixing speakers with existing speakers, and scheduling broadcasting by the user setting paging and music broadcasting schedules.

1 is a diagram for explaining a conventional broadcasting system.
2 is a conceptual diagram of a network broadcasting system according to the present invention.
3 is a block diagram of a network broadcasting system according to the present invention.
4 is an embodiment of a speaker of a network broadcasting system according to the present invention.
5 is an embodiment of a speaker, a broadcast controller, and an IP broadcast server of a network broadcast system according to the present invention.
6 is a block diagram illustrating a TTS system of a broadcast controller of a network broadcast system according to the present invention.
7 is a diagram for explaining information differences due to intonation of a prosody generator of a broadcast controller TTS system of a network broadcasting system according to the present invention.
8 is a view showing a rear terminal of the audio bridge of the network broadcasting system according to the present invention.
9A is an embodiment showing an individual speaker or area broadcasting function of the network broadcasting system according to the present invention.
9B is an embodiment showing a group broadcasting function of the network broadcasting system according to the present invention.
9C is an embodiment showing a paging broadcast function of the network broadcast system according to the present invention.
9D is an embodiment showing a schedule broadcasting function of the network broadcasting system according to the present invention.
10A is an embodiment showing a group broadcasting function of the network broadcasting system according to the present invention.
10B is an embodiment showing a preset broadcasting function of the network broadcasting system according to the present invention.
10c is an embodiment showing the KeyPad broadcasting function of the network broadcasting system according to the present invention.
11 is an embodiment of broadcasting by applying a display to an IP speaker of a network broadcasting system according to the present invention.
12 is an embodiment in which a plurality of controllers of a network broadcasting system according to the present invention are installed to differentiate priorities by use.
13 is an exemplary embodiment in which a broadcasting server is duplicated in preparation for a failure of the network broadcasting system according to the present invention.

Before proceeding with the details of the embodiments described below, some terms are defined or clarified.

IP speaker system is a digital component (digital PCB board) included in the main speaker that can operate a number of other sub-speakers. .

PoE is an abbreviation of Power over Ethernet and is also called an Ethernet power supply. A networking function defined by the IEEE 802.3af and 802.3at standards, PoE allows you to power network devices over an Ethernet cable over an existing data connection.

TTS is an abbreviation of Text to Speech, which refers to the function of reproducing text recorded by a computer as a voice.

Hereinafter, a network broadcasting system according to the present invention will be described in detail with reference to FIGS. 2 to 9D.

2 to 3, the network broadcasting system according to the present invention includes an IP speaker system 100 installed at a predetermined location; a broadcast controller 200 for transmitting audio information to be broadcast; An IP broadcasting server 300 that receives the voice information from the broadcast controller 200 and transmits it to the IP speaker 100, and an Ethernet power supply (PoE, 400) that supplies power to the IP speaker system 100 include

Therefore, since the present invention uses only one cable for power and data transmission through the Ethernet power supply, it is possible to reduce the cost of purchasing and managing the cables for networking equipment and VoIP phones. For buildings that are too expensive or inconvenient to install new wires, PoE makes network installation and expansion simple and inexpensive.

In addition, the device can be mounted in a place not suitable for installation, for example, a drop ceiling, which has the advantage of reducing the number of cables and electrical outlets required in a complex equipment room or wiring closet.

The IP speaker system 100 is characterized in that it includes one or more sub-speakers 120 and one or more main speakers 110 including a digital PCB board for the sub-speakers 120 to operate. As shown in FIG. 4 , the main speaker 110 receives power based on PoE, so it can be operated without the need for a separate power supply, and there is an advantage that it is not necessary to separately install a power supply using only a pre-installed LAN line. In addition, it is designed to link the Sound Enforcement Device with a LAN line. Sound Enforcement Device is a device that is output through Speaker (ceiling speaker) when a wireless microphone is connected to this device through the AUX terminal. In other words, in the case of large classrooms and lecture rooms, the teacher/professor may not be able to hear the lectures from the front, so a wireless microphone system is usually used. However, in this case, in order to output to the speaker, it is necessary to connect heterogeneous devices, and the present invention can solve all such inconveniences with the IP speaker system 100 .

In addition, the IP speaker system 100 may include a solar panel to receive power from the solar panel. In this case, it can operate without being supplied with power through a LAN line, and can be broadcast by wirelessly communicating with the broadcast controller 200 and the IP broadcast server 300 .

In addition, the IP speaker system 100 is characterized in that it includes any one or a combination of two or more of a horn speaker, a cabinet speaker, and a ceiling speaker. 5 , a horn speaker, a cabinet speaker, and a ceiling speaker can be seen.

The broadcast controller 200 includes a microphone 210 so that a user can directly record the voice information. In FIG. 5 , the microphone 210 of the broadcast controller 200 can be identified.

In addition, the broadcast controller 200 is characterized in that the voice information is transmitted through a TTS function.

To describe the TTS function in more detail, the broadcast controller 200 may further include a TTS system for applying the TTS function. Hereinafter, the TTS system will be described in more detail with reference to FIG. 6 .

The TTS system includes a preprocessor, a Morpho analysis unit, a contextual analysis unit, a syntactic phoneme parser, an LTS module, and a prosody generator to output text sentences in a more natural voice.

The preprocessor preprocesses the text that can be input into the TTS system. The inputable text may have a difference depending on the tone of the spoken text, such as dialogue, and the text itself, such as English, numbers, abbreviations, symbols, and technical terms. According to this embodiment, "2:20" is changed to "2:20" or "Two hour twenty minute", and a conversion operation (preprocessing) is performed from "kg" to "kilogram".

The Morpho analysis unit applies all possible pronunciation categories to the unique characteristics of each word through the basic spelling of the character. Words that are transformed, derived, or compounded are analyzed and processed through the minimized grammatical rules using the lexical list of stems and suffixes.

The contextual analysis unit handles the analysis of sentence components. It extracts sentence syntax information to generate natural prosody information.

The phrase phonological parser implements arbitrary sentences to produce unique results in a short time and has a surface structure for generating prosody information that affects speech output. Since voice information for all input words cannot be found in the dictionary (DB), information on new words is extracted based on dictionary information.

,

로 발음에 따른 차이를 갖는다. 따라서 각 단어의 품사에 따른 분류를 실시하여 발음에 차이를 두어 정보를 처리하며, 처리방법에는 사전목록을 기초로 하거나, 변환 규칙을 통한 방법을 적용한다. 사전목록에 의한 방법의 경우 데이터베이스에 저장되어 있는 문자에 대한 정보를 통해서, 변환 규칙에 의한 방법의 경우 변환 규칙을 적용하여 동형 이의어에 대한 처리를 한다.The LTS module is a Letter to Speech module, which analyzes homozygous words with the same spelling but different pronunciations. For example, "record" can be used as a verb form of to record and a noun form of record. In this case, each

,

has a difference in pronunciation. Therefore, each word is classified according to the part-of-speech, and information is processed with a difference in pronunciation, and the processing method is based on a dictionary list or a method through a conversion rule is applied. In the case of the dictionary list method, the homologous word is processed by applying the conversion rule in the case of the conversion rule method through the information about the characters stored in the database.

The prosody generator refers to the characteristics of the voice signal due to changes in pitch, volume, and length of syllables. Depending on where in the context is emphasized, in the relationship between words, depending on the connection between the end of the context and the context, and the semantic difference of the context in the connecting syllable, the difference is indicated. do. Although the difference due to contextual emphasis and the relationship between words is very small, the difference due to the end of the context and connection and the difference due to the meaning within the context are very large and important. Minimize the difference and reinforce the latter two cases. Referring to FIG. 7 , the difference in information due to intonation will be described through the embodiment, where a is the difference due to contextual emphasis, b is the difference due to the relationship between words, and c is the end of the context and connection. The difference, d, shows the difference by meaning within the context.

As shown in FIG. 2 , the IP broadcasting server 300 may receive voice information from an IP phone or a user's smart phone instead of the broadcasting controller 200 .

In addition, the IP broadcasting server 300 is characterized in that it includes an audio bridge so that it can broadcast in conjunction with an existing speaker without a wired/wireless network function. It is to add a network function through an optical and coaxial input terminal of audio without a network function installed in advance through the audio bridge according to the present invention, and a DAC (D/A Converter). It digitally outputs it through the Ethernet terminal of the audio bridge, the Wi-Fi receiving antenna, and optical coaxial.

Referring to FIG. 8 , the audio bridge has a built-in DAC and an analog RCA output terminal, and supports wired LAN, wireless Wi-Fi, Bluetooth, and UPnP/DLNA. From the left, the analog output terminal, the Wi-Fi reception antenna terminal, the USB-A terminal, the Ethernet terminal, and the 5V DC input jack are in order. The USB-A terminal is for playback using a USB storage device or a CD drive connection.

A tool that converts passive speakers into network speakers with all the benefits of network audio. When used, it can perform the same function as a network audio speaker

With an audio amplifier, you can either continue with your existing passive speakers or choose any speaker on the market.

Either way, you can install both passive and network audio speakers together, and the speakers work seamlessly together.

A tool that converts passive speakers into network speakers with all the benefits of network audio. When used, it can perform the same function as a network audio speaker

With an audio amplifier, you can either continue with your existing passive speakers or choose any speaker on the market.

Either way, you can install both passive and network audio speakers together, and the speakers work seamlessly together.

In addition, the IP broadcasting server 300 uses an LTE network when communicating with the IP speaker system 100 and the broadcasting controller 200 . Through this, it is possible to easily and conveniently install a broadcasting system even in an environment where the installed broadcasting and communication system cannot be used (such as a new construction environment).

In addition, the IP broadcasting server 300 has a recording function for recording and storing voice information broadcast from the IP speaker system 100 .

Next, the function of the network broadcasting system according to the present invention will be described in detail with reference to FIGS. 9A to 9D.

According to the present invention, through the broadcast controller 200 (or IP phone or user's smart phone), as shown in FIG. 9A, individual speaker or zone selection broadcasting is possible. As shown in FIG. 9A , broadcasting can be performed by selecting a speaker. In FIG. 9A , gray denotes an unselected speaker, yellow denotes a selected speaker, and red denotes a disabled or non-operated speaker.

Further, in addition to the individual speaker or zone selection broadcasting function, a pre-group selection broadcasting is possible as shown in FIG. 9B . It is a function that the user designates a group between speakers in advance, selects a group according to it, and then broadcasts it. Also in FIG. 9B , gray indicates an unselected group and yellow indicates a selected group.

In addition, as shown in FIG. 9C , it has a preset broadcasting function for performing predetermined broadcasting to a group predefined in FIG. 9B . This is a function that broadcasts pre-stored sound sources, recorded sound sources, and sound sources input through the TTS function to a designated group. Gray is the registered Prest List and yellow means broadcasting.

Also, as shown in FIG. 9D , predefined schedule broadcasting information can be checked. It is a function that broadcasts the sound source at the time when the user pre-specifies the day, time, etc.

That is, it is possible to broadcast (all, group, individual) a predetermined sound source at a time set by the user through the broadcast controller 200 (or IP phone or smart phone) according to the schedule (year, month, day, day, time). .

Next, another embodiment of broadcasting using the broadcast controller 200 according to the present invention will be described in detail with reference to FIGS. 10A to 10C .

To describe the group broadcast in detail with reference to FIG. 10A , after reading group information from SoundMaster by executing a self-program (application) installed in the broadcast controller 200, select one of the Lists to activate the Mic in the On-Air state. If you select it, you can do a voice broadcast. Also, if you press the sound source button, you can check the list of stored sound source files (wav, mp3, etc.), select it and press the play button to transmit the sound source broadcast.

To describe the preset broadcasting in detail with reference to FIG. 10B , after reading preset information from the SoundMaster, if one of the Lists is selected, the broadcasting can be transmitted to a predefined group.

Referring to Fig. 10c, to describe in detail broadcasting using the IP speaker system 100 using the keypad, input the address for each IP speaker or the group address (number) of the speakers, and press the On-Air button to If you select Mic in the Air state, you can make a voice broadcast. Similarly, if you press the sound source button, you can check the list of saved sound source files (wav, mp3, etc.), and if you select it and press the play button, the sound source broadcast is transmitted.

Next, a display-integrated IP speaker capable of text broadcasting for the visually impaired will be described with reference to FIG. 11 .

By applying a display to the main speaker 110 and the sub speaker 120 of the IP speaker system 100, as shown in FIG. 11, for the hearing-impaired who cannot hear the broadcast, an emergency broadcast or announcement can be performed simultaneously with voice, text, and symbol. By broadcasting, evacuation direction, weather information, fine dust information, etc. can be simultaneously expressed and used for multiple information delivery. When broadcasting is transmitted from the server, voice and text information is transmitted at the same time to enable dual broadcasting, and by storing sound and text information built into the IP speaker itself, information collected from its own sensor even when it is not connected to the server It is possible to express emergency and daily life information and to transmit sound sources.

12 is an embodiment in which a plurality of controllers of a network broadcasting system according to the present invention are installed to differentiate priorities by use;

By installing multiple controllers in broadcasting rooms, classrooms, etc., it is possible to differentiate them by setting priorities for each purpose and situation.

13 is an exemplary embodiment in which a broadcasting server is duplicated in preparation for a failure of the network broadcasting system according to the present invention.

By duplicating the broadcasting server, it is possible to overcome the failure by operating the sub server when the main server fails or a problem occurs.

Next, the object environment learned from the IP speaker system 100 is deep-learned to implement the DB, and accordingly, the speaker determines and transmits the volume control by time, object, space, and area by itself, thereby the purpose of speaker broadcasting The deep learning unit that enables the realization of a broadcasting system capable of controlling the volume based on deep learning according to the present invention will be described in detail.

The deep learning unit enables automatic speaker volume adjustment through deep learning-based object environment-based learning.

When classifying objects, people, vehicles, animals, etc. are distinguished through edge devices (detection sensor, radar, CCTV, etc.).

Most of the broadcasting systems currently operated by public facilities or institutions are composed of analog broadcasting systems.

However, the volume control of the transmitted speaker is transmitted by artificial manipulation or a set value, and since it is broadcast at a volume that does not take into account the surrounding environment in which the speaker is installed, in the present invention, the collection unit (detection sensor, radar, Deep learning the object environment learned from CCTV, etc.) to implement a DB, and accordingly, the speaker determines and transmits the volume control by time, object, space, and area by itself, so that the deep learning-based volume according to the purpose of speaker broadcasting It enables the realization of an adjustable broadcasting system.

Hereinafter, a paging function applicable to the network broadcasting system according to the present invention will be described in detail. The paging function is a function that allows users to quickly and safely respond to emergency situations by broadcasting announcements. The ultimate goal is to be able to deliver a message to a specific area or all areas. To this end, announcements can be broadcast through the broadcast controller 200 even in an emergency situation with an audio bridge linked to an existing audio facility or a paging function of the network broadcast system of the present invention. In addition, self-broadcasting in case of emergency during real-time monitoring, automatic paging broadcasting when fire monitoring and various events occur, interlocking paging automatic broadcasting in case of equipment failure in connection with firefighting equipment and other systems, full broadcasting, group broadcasting, and individual broadcasting in case of an accident or emergency .

Therefore, the network broadcasting system according to the present invention is capable of configuring an All IP Base System, so there is no limitation in the wired/wireless configuration environment by utilizing WiFi , LTE, etc. in the network section, and all IP speakers are built-in amplifiers, so each speaker volume and individual broadcast This is possible. In addition, all IP speakers are connected to the network and supply power through PoE, so power supply and sound transmission are possible with 1 network cable. Since it is an All IP-based system, it can be used anywhere in the world on the Internet/network environment without region and space restrictions. broadcast is possible. Therefore, it is possible to broadcast through various methods (dedicated console, IP phone, SmartPhone) without establishing a separate broadcasting room. This saves space in the broadcasting room as it does not require various systems in the existing broadcasting room, simplifies cabling by connecting a network cable to the broadcasting server with one line, and consumes about 2~3W of power consumption during standby per speaker, while broadcasting With power consumption of about 7W, power consumption is significantly reduced compared to the existing analog method, which is advantageous for cost reduction.

In addition, the network IP broadcasting system communicates with the server and the devices connected to the speaker input/output port, and various methods for reducing communication errors during data communication are being studied. For example, the CRC error correction method is applied. , In the present invention, as a method for securely transmitting signals from an IP speaker to reduce data communication errors and increase security, an output data signal received from a processing unit inside the camera using one or more processors of the speaker separating into individual pieces; and distributing, using the communication network interface of the one or more processors and the camera, the individual pieces to a plurality of distributed storage network nodes using multiple transport streams, wherein the transport streams span a communication network. There is a need to apply a method for secure transmission of signals from an IP speaker, characterized in that no transport stream has enough data to reconstruct the output video signal.

Data used in communication between a speaker and a server in a network broadcasting system is encrypted and transmitted so that it is transmitted only to the corresponding speaker, and the encrypted and transmitted data must be decrypted by the user. Therefore, the encryption key used by the service provider to encrypt the broadcast data must be shared between the server and the speaker. An encryption key management method will be described.

(1) Traffic Encryption Key (TEK): Used when encrypting service content data, it is periodically updated and transmitted to a terminal having a group key (GK). The terminal may receive the TEK and decrypt data encrypted with the TEK.

(2) Group Key (Group Key: GK): A key shared among terminals subscribed to a broadcast service, and may be generated in a network and periodically updated and transmitted to a specific speaker.

(3) Security Key (SK): It is shared by speakers connected to the network through a predetermined setting process, and is used to encrypt and transmit the group key in the network.

The effect of this is that the IP broadcasting network does not update various types of encryption keys to the terminal whenever broadcast data is transmitted to the speaker, but updates the predetermined encryption key to the terminal at predetermined times, thereby reducing network complexity. In addition, since the number of times that the encryption key is updated in the terminal is reduced, communication resources can be efficiently used. In addition, since each individual speaker receives an encryption key every predetermined time and generates a traffic encryption key on its own to decrypt the received data, the efficiency of the network broadcasting system configuration is increased, and the security of communication during data communication is improved. heightening effect.

100: IP speaker system
110: main speaker 120: sub speaker
200: broadcast controller
210: microphone
300: IP broadcasting server
400: Ethernet power supply

Claims (11)

IP speaker system 100 installed at a predetermined location;
a broadcast controller 200 for transmitting audio information to be broadcast;
an IP broadcasting server 300 that receives the voice information from the broadcasting controller 200 and transmits it to the IP speaker system 100; and
In a network broadcasting system including; an Ethernet power supply 400 for supplying power to the IP speaker system 100,

The broadcasting controller 200 installs several units to differentiate broadcasting rights, and transmits the voice information through the TTS system,
The TTS system includes a preprocessor, a Morpho analysis unit, a contextual analysis unit, a syntactic phoneme parser, an LTS module, and a rhyme generator,
The broadcast controller 200 encrypts and transmits voice data so that data used in communication between the IP speaker system 100 and the IP broadcast server 300 is transmitted only to the corresponding speaker, and encrypts the voice data. The method is the traffic encryption key; Group Key (GK); It consists of a security key (SK), and the encryption key is updated periodically.
The audio bridge is connected to the IP speaker system 100 so that it can broadcast in conjunction with an existing speaker installed without a wired/wireless network function, and the audio bridge includes a digital-to-analog converter (DAC); an analog output terminal; wired LAN; wireless wifi; Supports Bluetooth and wireless communication connection,
The deep learning unit installed in the IP speaker system 100 automatically adjusts the speaker volume through deep learning-based object environment-based learning,
The deep learning unit divides people, vehicles, and animals through a detection sensor, radar, and CCTV connected to the IP speaker system 100, and adjusts the volume by time, object, and space by a deep learning algorithm,
The audio bridge and the network broadcasting system have a paging function,
The paging function is a network broadcasting system, characterized in that it automatically broadcasts an emergency when an emergency situation occurs during real-time monitoring.
The method according to claim 1,
The IP speaker system 100 is
one or more sub-speakers 120 and
Network broadcasting system comprising one or more main speakers (110).
The method according to claim 1,
The IP speaker system 100,
A network broadcasting system comprising a solar panel and receiving power from the solar panel.
4. The method according to any one of claims 1 to 3,
The IP speaker system 100,
A network broadcasting system, comprising a horn speaker, a cabinet speaker, and a combination of any one or two or more of a ceiling speaker.
delete delete The method according to claim 1,
The IP broadcasting server 300,
A network broadcasting system, characterized in that it receives voice information from an IP phone or a user's smart phone on behalf of the broadcasting controller (200).
The method according to claim 1,
The IP broadcasting server 300,
A network broadcasting system characterized in that expansion and duplication are possible.
9. The method of claim 1 or 8,
The IP broadcasting server 300,
A network broadcasting system, characterized in that when communicating with the IP speaker system (100) and the broadcasting controller (200), an LTE network is used.
The method according to claim 1,
The IP broadcasting server (300) has a recording function for recording and storing the voice information broadcast from the IP speaker system (100).
delete

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