Wide-area broadcasting system using low-power wireless relay method

Abstract

The present invention relates to a wireless broadcasting system and, more particularly, to a wireless broadcasting system which performs broadcasting through wireless communication using a low-power frequency in an ISM band that does not require separate authorization, is capable of performing broadcasting not only using main broadcasting equipment in a broadcasting room but also using mobile broadcasting equipment at any location where a wireless integrated transceiver is installed, and is capable of being easily installed, expanded, and reconfigured. The wireless broadcasting system according to the present invention comprises: main broadcasting equipment; mobile broadcasting equipment; speakers installed in respective areas; and a wireless integrated transceiver capable of wireless transmission and reception with each other, for receiving a broadcasting signal wirelessly transmitted from the main broadcasting equipment or the mobile broadcasting equipment, and transmitting the broadcasting signal to the connected speakers for output.

Description

Wide-area broadcasting system using low-power wireless relay

[0001] The present invention relates to a wireless broadcasting system, and more particularly, to a wide area broadcasting system using a low-power wireless relay method that broadcasts using wireless communication at a low-power frequency of the ISM band that does not require a separate license, and that enables broadcasting not only using the main broadcasting equipment of a broadcasting room but also using mobile broadcasting equipment from any location where a wireless integrated transmitter and receiver is installed, and that is easy to install, expand, and reconfigure.

[0002] Broadcasting systems in schools, hospitals, and government offices mainly use wired broadcasting systems in which equipment is connected by wires.

[0003] Cable broadcasting systems are difficult to install, expand, and reconfigure because they require wiring between equipment, and broadcasting cannot be done if power is cut off due to a fire or power outage.

[0004] Therefore, wireless broadcasting systems are being installed in large numbers these days. These systems primarily utilize the Internet to wirelessly connect broadcasting equipment, but the Internet carries the risk of hacking.

[0005] Furthermore, conventional broadcasting systems have limitations, such as the need for users to operate the main broadcasting equipment in a broadcasting room. This means that even if a broadcast needs to be made on-site, users must be present in the broadcasting room.

[0006] For reference, prior art technologies related to wireless broadcasting systems include registered patent 10-0427042 "Wireless broadcasting system", published patent 10-2023-0168885 "Wireless broadcasting system broadcasting based on wireless communication", and registered patent 10-1985286 "Smart wireless village guidance broadcasting system".

[0007] The present invention has been developed to solve the problems of the broadcasting system according to the prior art, and the purpose of the present invention is to provide a wide area broadcasting system using a low-power wireless relay method, which is easy to install, expand, and reconfigure the system, enables broadcasting over a wide area, has miniaturized broadcasting equipment with low power consumption, enables stable transmission of broadcasting data, and eliminates the risk of hacking by directly connecting the broadcasting equipment wirelessly without using the Internet, and has mobile broadcasting equipment in addition to the main broadcasting equipment, enabling immediate broadcasting anywhere in the broadcasting system installation area.

[0008] To achieve this purpose, a wide area broadcasting system using a low-power wireless relay method according to the present invention is provided.

[0009] Main broadcasting equipment;

[0010] Mobile broadcasting equipment;

[0011] Speakers installed in each zone;

[0012] It comprises a wireless integrated transmitter / receiver that is capable of wireless transmission and reception between each other and receives a broadcast signal wirelessly transmitted from the main broadcasting equipment or the mobile broadcasting equipment and transmits it to the connected speaker for output.

[0013] And it is characterized by further including a management PC connected to the wireless broadcasting equipment and managing the speaker and wireless integrated transmitter and receiver;

[0014] It is characterized by further including a sub-broadcasting device installed adjacent to the wireless integrated transmitter and receiver and wirelessly transmitting a broadcast signal to the wireless integrated transmitter and receiver;

[0015] It is characterized by further including a wireless repeater that relays wireless transmission and reception between the above wireless integrated transmitters and receivers.

[0016] The wide-area broadcasting system of the low-power wireless relay method according to the present invention is easy to install, expand, reconfigure, and maintain because it is wireless rather than wired and does not require wiring work. The broadcasting equipment is directly connected wirelessly without using the Internet, so there is no risk of hacking. Voice data is transmitted through a plurality of wireless integrated transmitters and receivers, so broadcasting is possible over a wide area, and broadcasting is possible even in shaded areas. The use of low-power wireless frequencies makes the broadcasting equipment miniaturized, power consumption is minimized, and battery operation is possible. In cases where speakers are installed in each classroom, such as in schools, the small broadcasting equipment can be installed simply by hanging it on the wall, and broadcasting within the school is possible using sub-broadcasting equipment in the classroom. The wireless integrated transmitters and receivers are connected in a linear manner, so that the transmission of broadcasting data is stable. By carrying a mobile broadcasting equipment, immediate broadcasting is possible anywhere in the broadcasting system installation area. As a system that enables broadcasting even in shaded areas through a repeater, it is a very useful invention for industrial development.

[0017] Figure 1 is a schematic diagram of a wide area broadcasting system using a low-power wireless relay method according to the present invention.

[0018] Figure 2 is a block diagram of the main broadcasting equipment according to the present invention.

[0019] Figure 3 is a block diagram of a wireless integrated transmitter and receiver according to the present invention.

[0020] Figure 4 is a drawing explaining the communication structure of a wireless integrated transmitter and receiver.

[0021] Figure 5 is a drawing showing a lecture in a classroom using sub-broadcasting equipment.

[0022] Figure 6 is a drawing showing a broadcast using main broadcasting equipment.

[0023] Figure 7 is a drawing illustrating a broadcast using mobile broadcasting equipment.

[0024] Figure 8 is a drawing showing the overall broadcast.

[0025] Figure 9 is a drawing showing the appearance of group broadcasting.

[0026] Figure 10 is a drawing showing the appearance of an individual broadcast.

[0027] *Explanation of symbols for major parts of the drawing*

[0028] 10: Main broadcasting equipment 20: Management PC

[0029] 30: Speaker 40: Wireless integrated transmitter and receiver

[0030] 50: Wireless repeater 60: Sub broadcasting equipment

[0031] 70: Mobile broadcasting equipment

[0032] Hereinafter, a wide area broadcasting system using a low-power wireless relay method according to the present invention will be described in more detail with reference to the drawings.

[0033] As shown in Fig. 1, a wide area broadcasting system using a low-power wireless relay method according to the present invention comprises a main broadcasting device (10), a management PC (20), a speaker (30), a wireless integrated transmitter / receiver (40), a wireless repeater (50), a sub broadcasting device (60), and a mobile broadcasting device (70).

[0034] The above main broadcasting equipment (10) is installed in the broadcasting room and controls the entire system.

[0035] Referring to FIG. 2, the main broadcasting equipment (10) comprises an input device (11) for receiving broadcasting data, a memory (12) for storing broadcasting data, a mixer (13) for mixing broadcasting data transmitted from the input device (11) or the memory (12), a communication module (14) for wirelessly transmitting broadcasting data from the mixer (13) and wirelessly receiving data from the wireless integrated transmitter / receiver (40) or wireless repeater (50), and a controller (15) for controlling the main broadcasting equipment (10).

[0036] The above broadcast data is usually audio, but may include video.

[0037] The above input device (11) is typically a microphone that receives the user's voice, and may further include a DVD, VTR, etc.

[0038] Examples of broadcast data stored in the above memory (12) include bell sounds that signal the start and end of school classes, and guidance messages that transmit emergency situations such as fire.

[0039] The above communication module can transmit and receive wirelessly using the 900MHz band.

[0040] The above controller (15) is equipped with buttons and a screen for user operation, and is equipped with a program for operating the broadcasting system. The user can operate the buttons of the controller (15) to perform individual broadcasting so that only a specific speaker (30) among a plurality of speakers (30) is broadcast, group broadcasting so that broadcasting is performed on speakers (30) grouped together, and general broadcasting so that broadcasting is performed on all speakers (30). The controller (15) is capable of priority broadcasting so that specific broadcasting data is broadcast first by a set program or user operation when multiple broadcasting data are input simultaneously.

[0041] The above management PC (20) is connected to the controller (15) of the main broadcasting equipment (10) and manages the broadcasting equipment constituting the broadcasting system according to the present invention.

[0042] Each broadcasting equipment, such as the above speaker (30), wireless integrated transmitter / receiver (40), sub broadcasting equipment (60), wireless repeater (50), sub broadcasting equipment (60), and mobile broadcasting equipment (70), is assigned an ID, and the management PC (20) registers and manages the ID, installation area, and specification information of each broadcasting equipment, and registers and manages the presence or absence of abnormalities, operating status, and broadcasting records of each broadcasting equipment.

[0043] The above management PC (20) can display the installation locations of broadcasting equipment on a map on the screen, and can display broadcasting equipment with problems on the screen with blinking or color to enable quick maintenance.

[0044] The above management PC (20) is connected to the Internet, so that a user can remotely monitor broadcasting equipment by connecting to the management PC (20) remotely, and broadcasting data can be transmitted to the controller (15) through the management PC (20) to enable remote broadcasting.

[0045] Each of the above broadcasting equipment can be operated by receiving commercial power, can be operated by battery power by installing a battery, or can be operated by both commercial power and battery power so that it is normally operated by commercial power and can be operated by battery when commercial power is cut off due to a power outage or other reason.

[0046] The above speakers (30) are installed in each zone and output broadcast data. For example, in a school, the speakers (30) are installed in each zone, such as each classroom, playground, and gymnasium. In the case of classrooms, in addition to the speakers (30), monitors for video broadcasting may be installed.

[0047] The above wireless integrated transmitter and receiver (40) wirelessly transmits and receives broadcast data, and among the received broadcast data, broadcast data assigned to itself is transmitted to the connected speaker (30) for output.

[0048] The above wireless integrated transmitter / receiver (40) can be integrated with the speaker (30) and connected by wire or wirelessly.

[0049] The above wireless integrated transmitter and receiver (40) has a communication distance of about 100 m, and the wireless integrated transmitter and receiver (40) communicate wirelessly with each other in the 900 MHz band, also communicate wirelessly with the mobile broadcasting equipment (70) in the 900 MHz band, and communicate wirelessly with the sub broadcasting equipment (60) in the 2.4 GHz or 5.8 GHz band.

[0050] Referring to FIG. 3, the wireless integrated transmitter / receiver (40) comprises a wireless communication module (41) for wirelessly communicating broadcast data, etc., a codec (42) for decrypting encrypted broadcast data and transmitting it to a speaker (30), and a control unit (43) for processing received broadcast data.

[0051] The above control unit (43) outputs the received broadcast data through the speaker (30) when it is confirmed that the received broadcast data is broadcast data allocated to itself, and transmits the received broadcast data to another wireless integrated transmitter / receiver (40) in the vicinity. At this time, when the received broadcast data is confirmed to be the same broadcast data as previously received broadcast data, it bypasses it without transmitting it to another wireless integrated transmitter / receiver (40) and does not transmit it to the speaker (30) connected to itself.

[0052] The above wireless integrated transmitter and receiver (40) checks information such as whether there is an abnormality and operating status of its own speaker (30) and sub broadcasting equipment (60) connected to it, as well as whether there is an abnormality and operating status of the speaker (30) and sub broadcasting equipment (60), and transmits the information to the main broadcasting equipment (10) so that it can be managed by the management PC (20).

[0053] In Fig. 4a, when the voice signal of the mobile broadcasting device (30) is received by the wireless integrated transmitter / receiver (40) of R3, R3 broadcasts the voice of the mobile broadcasting device (30) through the corresponding speaker (30) and simultaneously transmits it to R2 and R4. R2 and R4 broadcast the voice received by R3 through the speaker and simultaneously transmit it to R1 and R5. Through this relay, the voice of the mobile broadcasting device (30) is transmitted and broadcasted through all wireless integrated transmitter / receivers (40).

[0054] Figure 4b shows a state in which no voice is transmitted from the mobile broadcasting equipment (30), and each wireless integrated transmitter / receiver (40) exchanges synchronization information and other information necessary for the system through a control frame and waits for the reception of a voice frame in a state in which three voice frames are received.

[0055] FIG. 4c illustrates a communication structure when a mobile broadcasting device (30) is connected to a wireless integrated transceiver (40) R3 for voice relay, as in the example of FIG. 4a. The mobile broadcasting device (30) transmits voice to the wireless integrated transceiver (40) R3 through the third voice frame, that is, channel 3. When the wireless integrated transceiver (40) R3 detects that voice data is coming in through channel 3, it transmits the voice data to the wireless integrated transceiver (40) R2 through channel 1 and to the wireless integrated transceiver (40) R4 through channel 2. The wireless integrated transceiver (40) R2 transmits the voice data coming in through channel 1 to the wireless integrated transceiver (40) R1 again through channel 2. The wireless integrated transmitter / receiver (40) R4 transmits voice data received through channel 2 to the wireless integrated transmitter / receiver (40) R5 through channel 1. Voice relay is performed in this manner.

[0056] The above wireless integrated transmitters and receivers (40) are connected in a linear manner to transmit the received broadcast data in one direction.

[0057] Referring to Fig. 4a, there are five wireless integrated transmitters and receivers (40) from R0 to R4, and when the direction of R0 is forward and the direction of R4 is backward, one wireless integrated transmitter and receiver (40) (e.g., R2) is linearly connected in such a way that one wireless integrated transmitter and receiver (40) (e.g., R1, R3) is connected forward and backward, respectively, and broadcast data is transmitted in one direction, either forward or backward, from the linearly connected wireless integrated transmitter and receiver (40).

[0058] For reference, some wireless integrated transmitters and receivers (40), such as the wireless integrated transmitter and receiver (40) directly connected to the main broadcasting equipment as shown in FIG. 8, may have multiple wireless integrated transmitters and receivers (40) connected to the front or rear. In addition, as shown in [A] of FIG. 5, the wireless integrated transmitter and receiver (40) that receives broadcast data from a mobile broadcasting equipment (70) or a sub broadcasting equipment (60) transmits the broadcast data to the wireless integrated transmitters and receivers (40) on both the front and rear.

[0059] FIG. 4a shows a mobile broadcasting device (30) connected to the wireless integrated transmitter / receiver (40) of R3 among five wireless integrated transmitter / receivers (40) from R0 to R4, FIG. 4b shows a communication structure before the wireless integrated transmitter / receivers (40) perform voice relay, and FIG. 4c shows a communication structure when the mobile broadcasting device (30) is connected to the wireless integrated transmitter / receiver (40) of R3 to perform voice relay.

[0060] As seen in FIGS. 4a and 4b, the communication structure of the wireless integrated transmitter and receiver (40) consists of one control channel (r0) and three transmission / reception channels (r1, r2, r3).

[0061] Here, the control channel (r0) communicates with the wireless integrated transmitter / receiver (40) linearly connected forward or backward or front and rear, and after synchronizing with each other, checks whether the wireless integrated transmitter / receiver (40) is faulty. That is, if the control channel (r1) is not received by the linearly connected wireless integrated transmitter / receiver (40), the wireless integrated transmitter / receiver (40) is determined to be faulty. In addition, in order to ensure that there is no problem with broadcasting waves when a fault occurs in one wireless integrated transmitter / receiver (40) (e.g., R2), multiple transmitting / receiving antennas may be provided. For example, when the R2 wireless integrated transceiver (40) is normal, the R2 wireless integrated transceiver (40) transmits and receives with the R1 wireless integrated transceiver (40) and the R3 wireless integrated transceiver (40) via the first transceiver antenna, respectively, and when a malfunction occurs in the R2 wireless integrated transceiver (40), the R1 wireless integrated transceiver (40) and the R3 wireless integrated transceiver (40) transmit and receive via the second transceiver antenna so that there is no problem in propagating broadcast data.

[0062] Among the three transmission / reception channels (r1, r2, r3) above, r3 is a broadcast data reception channel that receives broadcast data from the main broadcasting equipment (10, sub broadcasting equipment (60), and mobile broadcasting equipment (70), and is a forward channel that transmits and receives broadcast data with a wireless integrated transceiver (40) linearly connected in the front, and r2 is a rear channel that transmits and receives broadcast data with a wireless integrated transceiver (40) linearly connected in the rear. When the mobile broadcasting equipment (70) is connected to the R3 wireless integrated transceiver (40), referring to FIG. 4c, the broadcast data of the mobile broadcasting equipment (70) is received in the broadcast data reception channel (r3) of the R3 wireless integrated transceiver (40), and the R3 wireless integrated transceiver (40) transmits the broadcast data received in r3 to the R2 wireless integrated transceiver (40) through the front channel (r1) and transmits it to the R4 wireless integrated transceiver (40) through the rear channel (r2). The broadcast data is transmitted to the wireless integrated transceiver (40), and the R2 wireless integrated transceiver (40) transmits the broadcast data received through the rear channel (r2) to the R1 wireless integrated transceiver (40) using the front channel (r1), so that the broadcast data is transmitted and broadcasted through the speaker. For reference, the three transmission / reception channels (r1, r2, r3) indicate the set frequencies, i.e., the frequencies at which broadcast data is transmitted and received.

[0063] The above sub-broadcasting equipment (60) is installed adjacent to the speaker (30) and wirelessly transmits the input broadcasting data to the wireless integrated transmitter / receiver (40).

[0064] Users can broadcast on-site using the sub-broadcasting equipment (60) installed in each area without visiting the broadcasting room.

[0065] The user can operate the above sub-broadcasting equipment (60) to perform individual broadcasting, group broadcasting, general broadcasting, priority broadcasting, etc.

[0066] The above wireless repeater (50) relays wireless transmission and reception between the wireless integrated transceivers (40). The wireless integrated transceiver (40) has a communication distance of about 100 m. If the distance between two wireless integrated transceivers (40) is far and wireless transmission and reception is difficult, their wireless transmission and reception are relayed through the wireless repeater (50). In addition, the wireless integrated transceiver (40) has limitations in terms of location in which it is integrated with or installed adjacent to the speaker (30). Therefore, if the wireless integrated transceiver (40) is installed in a shaded area, wireless transmission and reception with another wireless integrated transceiver (40) is possible through the wireless repeater (50).

[0067] For reference, the above wireless integrated transmitter / receiver (40) wirelessly transmits broadcast data to other wireless integrated transmitter / receivers (40) within the communication range, so even if a malfunction occurs in some of the wireless integrated transmitter / receivers (40), there is no problem with the broadcast data being transmitted and broadcasted.

[0068] The above mobile broadcasting equipment (70) allows the user to carry it around and broadcast on site.

[0069] The above-mentioned mobile broadcasting device (70) continuously attempts to establish a wireless connection with the wireless integrated transmitters and receivers (40) existing in the vicinity. The mobile broadcasting device (70) connects to one of the wireless integrated transmitters and receivers (40) in the vicinity that has a sensitivity higher than a certain level, and when the connection sensitivity with the connected wireless integrated transmitter and receiver (40) falls below a reference level and another wireless integrated transmitter and receiver (40) having a sensitivity higher than a certain level is identified, the connection is switched to the other wireless integrated transmitter and receiver (40).

[0070] Users can broadcast using the above mobile broadcasting equipment (70), and individual broadcasting, group broadcasting, general broadcasting, and priority broadcasting are also possible.

[0071] Figure 5 illustrates a wireless lecture using a sub broadcasting device (60) in a classroom. Speakers (30) and a wireless integrated transmitter / receiver (40) are installed in the classroom, and a teacher (i.e., a user) can use the sub broadcasting device (60) provided in the classroom to provide a wireless lecture. The lecture content that the teacher speaks using the sub broadcasting device (60) is output not only from the speakers (30) of the classroom in question, but can also be output from speakers in other classrooms designated by the teacher using the sub broadcasting device (60).

[0072] Figure 6 illustrates broadcasting to each zone of the broadcasting system installation area using the main broadcasting equipment (10) of the broadcasting room, and Figure 8 illustrates broadcasting to each zone of the broadcasting system installation area using the mobile broadcasting equipment (70).

[0073] FIG. 8 illustrates an overall broadcast in which voice (broadcast data) input from the main broadcasting equipment (10) or mobile broadcasting equipment (70) is transmitted through wireless integrated transmitters and receivers (40) and broadcasts are output in all zones, FIG. 9 illustrates a group broadcast in which voice (broadcast data) input from the main broadcasting equipment (10) or mobile broadcasting equipment (70) is transmitted through wireless integrated transmitters and receivers (40) and broadcasts are output in zones belonging to a specific group, and FIG. 10 illustrates an individual broadcast in which voice (broadcast data) input from the main broadcasting equipment (10) or mobile broadcasting equipment (70) is transmitted through wireless integrated transmitters and receivers (40) and broadcasts are output only in a specific zone.

[0074] The wide area broadcasting system of the low-power wireless relay method according to the present invention is equipped with a function of remotely managing the presence or absence of abnormalities in broadcasting equipment, a function of determining whether or not a voice signal is being transmitted and a function of controlling the volume, a power control function, and a function of monitoring and controlling the RF output of a wireless integrated transmitter / receiver and a repeater.

[0075] The wide area broadcasting system of the low-power wireless relay method according to the present invention assigns an individual ID or channel number to each broadcasting device, and accordingly enables general broadcasting, group broadcasting, and individual broadcasting, and when necessary, individual broadcasting is possible during general broadcasting, and when general broadcasting is necessary, such as in an emergency, during individual broadcasting or group broadcasting, general broadcasting is given priority, and a two-way communication function of wireless integrated transmitters and receivers is provided, and even if some wireless integrated transmitters and receivers are down by configuring them as a star or multi-network, there is no interruption in broadcasting, and an online update function of software for operating the broadcasting system is provided.

[0076] In explaining the present invention above, a wide area broadcasting system using a low-power wireless relay method having a specific shape and structure has been described with reference to the attached drawings. However, the present invention can be variously modified and changed by those skilled in the art, and such modifications and changes should be interpreted as falling within the scope of protection of the present invention.

Claims

1. Main broadcasting equipment; Mobile broadcasting equipment; Speakers installed in each zone; A wide area broadcasting system using a low-power wireless relay method, comprising: a wireless integrated transmitter / receiver capable of wireless transmission and reception between each other, receiving a broadcast signal wirelessly transmitted from the main broadcasting equipment or the mobile broadcasting equipment and transmitting it to the connected speaker for output.

2. In paragraph 1, A wide area broadcasting system using a low-power wireless relay method, characterized in that it further includes a management PC connected to the wireless broadcasting equipment and managing the speaker and wireless integrated transmitter and receiver.

3. In paragraph 1, A wide area broadcasting system using a low-power wireless relay method, characterized in that it further includes a sub-broadcasting device installed adjacent to the wireless integrated transmitter and receiver and wirelessly transmitting a broadcast signal to the wireless integrated transmitter and receiver.

4. In paragraph 1, A wide area broadcasting system using a low-power wireless relay method, characterized in that it further includes a wireless repeater that relays wireless transmission and reception between the wireless integrated transmitters and receivers.

5. In paragraph 1, The above wireless integrated transmitters and receivers are connected in a linear manner, A wide area broadcasting system using a low-power wireless relay method, characterized in that the transmission and reception channels of the wireless integrated transmitter and receiver are composed of a broadcast data reception channel for receiving broadcast data from the main broadcasting equipment or mobile broadcasting equipment, a forward channel for transmitting and receiving broadcast data to a wireless integrated transmitter and receiver linearly connected forward, and a rear channel for transmitting and receiving broadcast data to a wireless integrated transmitter and receiver linearly connected backward.

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