Linear wireless speech relay system

Abstract

The present invention relates to a linear wireless speech relay system and, more specifically, to a linear wireless speech relay system wherein: low-power wireless broadcasting is performed in an ISM band that can be used by anyone without a license; a plurality of wireless repeaters are linearly connected to relay and transmit speech data in one direction to enable wireless broadcasting within or beyond a communication range; even when an abnormality occurs in any one wireless repeater, the linear connection of the wireless repeaters is maintained such that no problem occurs in the broadcasting; and when the wireless repeater in which the abnormality occurred operates normally, the linear connection of the wireless repeaters is automatically restored. The linear wireless speech relay system according to the present invention comprises a plurality of wireless repeaters linearly connected such that speech data is relayed and transmitted in one direction, wherein a communication structure of the wireless repeaters comprises: an input channel via which speech data is received from a speech input device; a frontward channel via which speech data is transmitted to and received from a wireless repeater linearly connected in the frontward direction; and a rearward channel via which speech data is transmitted to and received from a wireless repeater linearly connected in the rearward direction, wherein the wireless repeaters include a first wireless transceiver that performs transmission and reception with the frontward wireless repeater and the rearward wireless repeater, and a second wireless transceiver that enables transmission and reception between two frontward and rearward wireless repeaters in which an abnormality occurs.

Description

Linear Wireless Voice Relay System

[0001] The present invention relates to a linear wireless voice relay system, and more particularly, to a linear wireless voice relay system that performs low-power wireless broadcasting in an ISM band that can be used by anyone without a license, and in which a plurality of wireless repeaters are linearly connected to relay voice data in one direction to enable wireless broadcasting beyond a transmission distance, and in which even if a problem occurs in one of the wireless repeaters, the linear connection between the wireless repeaters is maintained so that no problem occurs in broadcasting, and in which the linear connection between the wireless repeaters is automatically restored when the wireless repeater in which the problem occurs returns to normal operation.

[0002] Various wireless communication technologies utilizing the ISM band, such as Bluetooth, Zigbee, and Wi-Fi, are being developed and deployed. Using these wireless communication technologies, various voice transmission and reception devices, such as wireless headphones and wireless microphones, have been developed, and development is still actively underway.

[0003] The ISM band is available for unlicensed use by anyone without any restrictions on its use, allowing for the development of a wide range of applications.

[0004] The ISM band is used for broadcasting in a narrow range of less than 100 m with low power.

[0005] Low-power wireless broadcasting in the ISM band involves a transmitter and receiver in a central broadcasting room transmitting voice data to surrounding receivers within the coverage area, and the receivers each receive the voice data and output it to a speaker for broadcasting.

[0006] A technology is needed that enables wireless broadcasting to areas beyond the range limit by using low-power wireless broadcasting in the ISM band, which can be used by anyone without a license, but the existing technology that broadcasts using the ISM band is unable to overcome the range limit.

[0007] 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".

[0008] The present invention is an invention developed to solve the problems of the prior art, and aims to provide a linear wireless voice relay system that enables wireless broadcasting beyond the transmission range in low-power wireless broadcasting of the ISM band by linearly connecting repeaters, and in which even if a problem occurs in any one repeater, the transmission of voice data is not cut off, so that no problem occurs in broadcasting.

[0009] To achieve this purpose, the linear wireless voice relay system according to the present invention is

[0010] In a linear wireless voice relay system in which multiple wireless repeaters are linearly connected to transmit voice data in one direction,

[0011] The communication structure of the above wireless repeater includes an input channel for receiving voice data from a voice input device, a forward channel for transmitting and receiving voice data with a wireless repeater linearly connected in the forward direction, and a rear channel for transmitting and receiving voice data with a wireless repeater linearly connected in the backward direction.

[0012] The above wireless repeater is characterized by including a first wireless transceiver that transmits and receives signals with a front wireless repeater and a rear wireless repeater, and a second wireless transceiver that allows the two front and rear wireless repeaters that have an abnormality to transmit and receive signals.

[0013] And the communication structure of the wireless repeater is characterized in that it further includes a control channel that checks whether there is an abnormality in the wireless repeater by communicating with the wireless repeater in front, the wireless repeater in the rear, or the wireless repeater in both the front and rear.

[0014] When a problem occurs in a repeater, the second wireless repeater of one of the two repeaters in front and behind it changes the frequency so that it can communicate with the first wireless repeater of the other repeater.

[0015] When the relay that had the abnormality is restored to normal, the restored relay performs a scan operation to receive the control channel of the other relay.

[0016] When the restored repeater receives a control channel from the scan, it checks whether voice data is currently being relayed and, if so, waits to maintain the existing voice data relay. If it is in a standby state and not relaying voice data, it transmits the control channel at the control channel time allocated to it.

[0017] The repeater that changed the frequency of the second wireless repeater is characterized in that when the control channel of the restored repeater is received, the changed frequency is changed to the previous frequency.

[0018] The linear wireless voice relay system according to the present invention is a system that can be used by anyone with low-power wireless broadcasting in the ISM band, overcomes the transmission distance limit of low-power wireless broadcasting in the ISM band by linearly connecting repeaters, and broadcasts are carried out normally even if a problem occurs in any repeater, and is automatically restored when the repeater in which the problem occurred operates normally, and is therefore a very useful invention for industrial development.

[0019] Figure 1 is a drawing showing a microphone connected to one of linearly connected repeaters and voice data being transmitted.

[0020] Figure 2 is a configuration diagram of a repeater according to the present invention.

[0021] Figure 3 is a diagram illustrating the communication structure of a first wireless transceiver and a second wireless transceiver in a reception standby state.

[0022] Figure 4 is a diagram illustrating a communication structure in which voice data is relayed when there is no abnormality in the relay.

[0023] Figure 5 is a diagram showing the communication structure when an abnormality occurs in the repeater.

[0024] Figure 6 is a diagram illustrating a communication structure in which voice data is relayed when a problem occurs in a relay.

[0025] Figure 7 is a diagram showing the communication structure when a relay in which an abnormality occurred is restored to normal.

[0026] *Explanation of symbols for major parts of the drawing*

[0027] R0~R4: Repeater S: Speaker

[0028] M: Microphone (voice input device)

[0029] 10: First wireless transceiver 20: Second wireless transceiver

[0030] 30: Codec 40: Controller

[0031] 50: Input button 60: Screen

[0032] Hereinafter, a linear wireless voice relay system according to the present invention will be described in more detail with reference to the drawings.

[0033] As shown in Fig. 1, in the linear wireless voice relay system according to the present invention, repeaters (R0 to R4) are linearly connected, a speaker (S) is connected to each of the repeaters (R0 to R4), and a voice input device (microphone (M)) is connected to one of the repeaters (R3).

[0034] There are five repeaters from R0 to R4, and when R0 is forward and R4 is backward, one repeater (R0 to R4) is linearly connected in such a way that one repeater (R0 to R4) is connected forward and one repeater (R0 to R4) is connected backward, and voice data is transmitted in one direction, either forward or backward, from the linearly connected repeaters (R0 to R4). When voice data of the microphone (M) is received by the repeater of R3, R3 broadcasts the voice data of the microphone (M) through the corresponding speaker (S) and simultaneously transmits it to R2 and R4. R2 and R4 broadcast the voice data coming into R3 through the speaker (S) and simultaneously transmit it to R1 and R5, respectively. Through this relay, the voice of the microphone (M) is transmitted and broadcasted through all repeaters.

[0035] Referring to FIG. 2, the above repeater (R0 to R4) includes a first wireless transceiver (10), a second wireless transceiver (20), a codec (30), a controller (40), an input button (50), a screen (60), and a power supply (70).

[0036] The first wireless transceiver (10) transmits and receives with the repeaters (R0 to R4) connected to its front and rear respectively among linearly connected repeaters (R0 to R4), and the second wireless transceiver (20) transmits and receives with the repeaters (R0 to R4) connected to its front and rear respectively when normal, and transmits and receives with the repeaters (R0 to R4) connected to its front and rear respectively when an error occurs in any repeater.

[0037] The above codec (30) encrypts and compresses voice data input from a voice input device, i.e., a microphone (M), and decrypts encrypted voice data received from another relay and outputs it to a speaker (S).

[0038] The above input button (50) and screen (60) are means for user operation.

[0039] The above controller (40) controls the repeater as a whole. That is, it processes the user's operation signal input through the input button (50), analyzes and processes data received through the first wireless transceiver (10) and the second wireless transceiver (20), and transmits the data through them, receives voice data from the codec (30) and transmits it through the first wireless transceiver (10) or the second wireless transceiver (20), or transmits voice data received from the first wireless transceiver (10) or the second wireless transceiver (20) to the codec (30).

[0040] The above power supply (70) receives power from a commercial power source or battery and converts and supplies power required for driving the controller (40), etc.

[0041] Figure 3 illustrates the communication structure of the first wireless transceiver (10) and the second wireless transceiver (20), in which a reception standby state in which voice data is not relayed is shown.

[0042] In each of the repeaters R0 to R4 shown in Fig. 3, the upper part of the central line is the communication structure of the first wireless transceiver (10), and the lower part is the communication structure of the second wireless transceiver (20).

[0043] For reference, if there is no abnormality in the repeater, the linearly connected repeaters can transmit and receive through either the first wireless transceiver (10) or the second wireless transceiver (20). Here, it is explained that if there is no abnormality in the repeater, transmission and reception are performed through the first wireless transceiver (10), and if an abnormality occurs in the repeater, transmission and reception are also performed through the second wireless transceiver (20).

[0044] The communication structure of the above first wireless transmitter and receiver (10) consists of one control channel (14) and three voice channels (11, 12, 13).

[0045] The communication structure of the above second wireless transmitter and receiver (20) has no control channel and consists of two voice channels (21, 22).

[0046] The above control channel (14) transmits and receives data for synchronization with other relays and data for checking for abnormalities, and the above voice channels (11, 12, 13, 21, 22) transmit and receive voice data.

[0047] The voice channels (11, 12, 13) of the first wireless transceiver (10) above are composed of a front channel (11) for transmitting and receiving voice data with a front repeater, a rear channel (12) for transmitting and receiving voice data with a rear repeater, and an input channel (13) for receiving voice data from a microphone (M). Looking at the R3 repeater, the front channel (11) transmits and receives with the rear channel (12) of the front R2 repeater, and the rear channel (12) transmits and receives with the front channel (11) of the rear R4 repeater.

[0048] The voice channel (21, 22) of the second wireless transmitter / receiver (20) above is composed of a front channel (21) for transmitting and receiving voice data with a front repeater, and a rear channel (22) for transmitting and receiving voice data with a rear repeater.

[0049] If there is no problem with both repeaters, the voice channels (11, 12, 13) of the first wireless transceiver (10) and the voice channels (21, 22) of the second wireless transceiver (20) can transmit and receive with the front and rear repeaters, respectively, and if a problem occurs in any repeater, the two repeaters in the front and rear where the problem occurred transmit and receive through the first wireless transceiver (10) and the second wireless transceiver (20).

[0050] Voice channels (11, 12, 13, 21, 22) are composed of a combination of frequency and time, and for voice data transmission and reception between channels in two repeaters, the frequency and time of the two channels must match.

[0051] In Fig. 3, each voice channel (11, 12, 13, 21, 22) has its transmission and reception frequency indicated, and the horizontal direction can be seen as containing a time function for transmission and reception. When the voice channels (11, 12, 13, 21, 22) are referred to as channel 1 and channel 2 from left to right, the two repeaters can communicate only between channel 1 and only between channel 2 due to the time function. In other words, communication is only possible between channels in the same column in the diagram.

[0052] Therefore, linearly connected repeaters are arranged alternately with the front channel (11) and the rear channel (12) on each of channel 1 and channel 2.

[0053] Looking at the first wireless transceiver (10) in FIG. 3, a forward channel (11) is located on channel 1 of R3, a rear channel (12) is located on channel 1 of R2, and a forward channel (11) is located on channel 1 of R1. A rear channel (12) is located on channel 2 of R3, a front channel (11) is located on channel 2 of R2, and a rear channel (12) is located on channel 2 of R1. In addition, channel 1 of R3 and R2 is set to frequency f2, and channel 2 of R2 and R1 is set to frequency f1. Therefore, voice data is transmitted and received through channel 1 of R3 and R2, and voice data is transmitted and received through channel 2 of R2 and R1.

[0054] And in the case of the second wireless transceiver (20), the front channel (21) and the rear channel (22) are located opposite to the front channel (11) and the rear channel (12) of the first wireless transceiver (10). Looking at R3, the front channel (11) is located in the first channel of the first wireless transceiver (10), and the rear channel (22) is located in the first channel of the second wireless transceiver (20). Therefore, when the front channel (11) of the first wireless transceiver (10) of R3 receives voice data to R2, the first wireless transceiver (10) of R2 receives the voice data, but the second wireless transceiver (20) does not receive the voice data.

[0055] For reference, in Fig. 3, the R0 relay corresponds to a terminal relay with no other relays connected in front, so the forward channel (11) is in an idle (inactive) state.

[0056] Figure 4 illustrates how a microphone (M) is connected to an R3 repeater and voice data is transmitted.

[0057] For reference, each repeater continuously transmits a signal to its surroundings for connection with the microphone (M), and the microphone (M) selects a repeater with superior communication sensitivity from among the connection signals received from multiple repeaters and connects to it. The microphone (M) wirelessly transmits voice data to the connected repeater. If the communication sensitivity between the microphone (M) and the connected repeater drops below the standard value due to movement of the microphone (M), the connection repeater is changed by selecting a repeater with superior communication sensitivity from among the connection signals of other repeaters.

[0058] When voice data of a microphone (M) is input to the input channel of the R3 repeater, the front channel (11) of the R3 repeater transmits the voice data to the rear channel (12) of the R2 repeater, and the rear channel (12) of the R3 repeater transmits the voice data to the front channel (11) of the R4 repeater. Then, the R3 repeater transmits the voice data received through the rear channel (12) to the R1 repeater through the front channel (11). In this way, the voice data of the microphone (M) input to the R3 repeater is relayed and propagated to the linearly connected repeaters in the forward direction and the linearly connected repeaters in the backward direction, and is broadcasted through the speaker (S) connected to each repeater.

[0059] Here, when voice data is received on the voice channel (11, 12, 13) of the first wireless transceiver (10) in each repeater, the voice channel (21, 22) of the second wireless repeater is put into an idle (inactive) state to prevent unnecessary power consumption.

[0060] Figure 5 illustrates the communication structure of the R3 repeater and the R1 repeater when an abnormality occurs in the R2 repeater.

[0061] If a problem occurs in the R2 repeater, the control channels (14) of the R1 repeater and the R3 repeater do not receive data from the control channel (14) of the R2 repeater, so the R1 repeater and the R3 repeater detect the problem in the R2 repeater.

[0062] When an abnormality in the R2 repeater is detected, the frequency of the second wireless transceiver (20) of the R1 repeater or R3 repeater is changed so that the R1 repeater and the R3 repeater can communicate with each other. Fig. 5 illustrates that the rear channel (22) of the second wireless transceiver (20) in the R1 repeater has changed its frequency to f2.

[0063] For reference, it may be unknown which channel among the front channel (21) and the rear channel (22) of the second wireless transceiver (20) in the R1 repeater will receive the voice data of the R3 repeater. In this case, the frequencies of both the front channel (21) and the rear channel (22) of the second wireless transceiver (20) in the R1 repeater may be changed to f2, and after the voice data is received through either the front channel (21) or the rear channel (22), the frequency of the channel on which the voice data is not received may be restored to f0.

[0064] Figure 6 illustrates the communication structure after the rear channel (22) of the second wireless transceiver (20) in the R1 repeater changes its frequency to f2.

[0065] When the R3 repeater receives voice data from the microphone (M), it transmits the voice data to the R1 repeater through the front channel (11) of the first wireless transceiver (10). Then, the rear channel (12) of the second wireless transceiver (20) in the R1 repeater receives the voice data, and the received voice data is transmitted to the R0 repeater through the front channel (21) of the second wireless transceiver (20). The R0 repeater can transmit and receive voice data through the second wireless transmitter (20) when a repeater is located in front of it, and can also transmit and receive voice data through the first wireless transceiver (10).

[0066] Figure 7 illustrates the communication structure when the abnormality of the R2 repeater is restored.

[0067] When the R2 repeater is restored to normal condition, it performs a scan operation to receive the control channel (14) of another repeater.

[0068] When receiving a control channel (14) from a scan, it checks whether voice data is currently being relayed, and if voice data is being relayed, it waits to maintain the existing voice data relay, and if it is in a standby state and not relaying voice data, it starts transmitting the control channel (14) at the control channel (14) time allocated to it as shown in Fig. 7. When the R1 repeater receives the control channel (14) from the R2 repeater, it returns the reception frequency of the rear channel (22) of the second wireless transceiver (20) to the frequency used before the abnormality occurred.

[0069] In explaining the present invention above, a linear wireless voice relay system having a specific shape and structure has been described with reference to the attached drawings, but 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. In a linear wireless voice relay system in which multiple wireless repeaters are linearly connected and voice data is relayed and transmitted in one direction, The communication structure of the above wireless repeater includes an input channel for receiving voice data from a voice input device, a forward channel for transmitting and receiving voice data with a wireless repeater linearly connected in the forward direction, and a rear channel for transmitting and receiving voice data with a wireless repeater linearly connected in the backward direction. A linear wireless voice relay system characterized in that the wireless relay includes a first wireless transceiver that transmits and receives with a front wireless relay and a rear wireless relay, and a second wireless transceiver that allows the two front and rear wireless relays that have an abnormality to transmit and receive.

2. In paragraph 1, A linear wireless voice relay system characterized in that the communication structure of the wireless relay further includes a control channel for communicating with a wireless relay in front, a wireless relay in the rear, or a wireless relay in both the front and rear to check for abnormalities in the wireless relay.

3. In paragraph 2, A linear wireless voice relay system characterized in that, when a problem occurs in a relay, the second wireless relay of one of the two relays in front and behind it changes the frequency so that it can communicate with the first wireless relay of the other relay.

4. In paragraph 3, When the relay that had the abnormality is restored to normal, the restored relay performs a scan operation to receive the control channel of the other relay. When the restored repeater receives a control channel from the scan, it checks whether voice data is currently being relayed and, if so, waits to maintain the existing voice data relay. If it is in a standby state and not relaying voice data, it transmits the control channel at the control channel time allocated to it. A linear wireless voice relay system characterized in that the repeater that changed the frequency of the second wireless repeater changes the changed frequency to the previous frequency when the control channel of the restored repeater is received.

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