KR20050122744A - Audio signal transmitter and receiver system of power line communication and a premises broadcasting system using thereof - Google Patents

Abstract

Transmit audio signal using the power line wired in the premises, extract the audio signal transmitted through the power line and output it through the speaker, and use this to build the premises broadcasting system and the acoustic system without the line between the amplifier and the speaker. To provide selective listening by specifying an ID for the receiving device,

In addition, a transmitter for carrying an audio signal input from a sound source source to a carrier of a specific band frequency and transmitting it through a power line, and a receiver for matching and reconstructing and transmitting an audio signal transmitted through a power line in a premises. And to implement the left channel and the right channel signal of the stereo audio signal with respect to the transmitting device and the receiving device, and transmitting an ID for setting the use authority of the receiving device in transmitting the audio signal to the power line. In this case, the selective transmission may be performed.

Description

AUDIO SIGNAL TRANSMITTER AND RECEIVER SYSTEM OF POWER LINE COMMUNICATION AND A PREMISES BROADCASTING SYSTEM USING THEREOF}

The present invention relates to a power line communication device, and more particularly, an audio signal is transmitted using a power line wired in a premises, and an audio signal transmitted through a power line is extracted and outputted through a speaker. An audio signal transmitting / receiving device using a power line for establishing a broadcasting system and a sound system without a line exclusion and enabling selective reception by setting an identification (ID) of the receiving device and a broadcasting system using the same will be.

In general, the broadcasting system in the premises is installed in buildings, apartments, schools, ships, hospitals, history, etc., and is widely used as a system for informing various emergency broadcasts, education, meetings, music, and emergency measures in case of an emergency. .

As shown in FIG. 1, the broadcast system is arranged in a specific space of a corresponding place to be installed, and amplifies an audio signal input from various guide voices input into a microphone or various sound source generating means such as a computer or an audio system. And a plurality of amplifiers (1), which are transmitting devices for outputting the same, and at least one or more, depending on the area of the space, in which the audio signals amplified and output from the amplifier (1) are located in the whole or in a specific space. Speaker 2 for outputting so that people can listen, and the wiring (3) connecting the amplifier (1) and the speaker (2).

In the conventional broadcasting system of the conventional premises, the amplifiers arranged in a specific space and each speaker arranged in a plurality of floors must be connected by wires. Therefore, a lot of time and difficulty are caused by the influence of the structure of the building. The accompanying problem arises.

In addition, the wiring between the amplifier and each speaker leads to excessive cost in the wiring installation, and due to the complicated wiring connection, the cause of failure due to disconnection and short circuit increases, thereby reducing the reliability of the broadcasting system. There is a disadvantage.

In particular, in the case of a large building, if a short circuit or disconnection occurs in any wiring, a problem that is practically impossible to find and repair the corresponding point occurs.

In addition, as the distance between the amplifier and the speaker increases, the output of the amplifier must be increased in consideration of the loss of a relatively generated signal, and thus, a problem occurs in that an expensive amplifier is damaged due to overheating and overloading of the amplifier and the whole function is stopped.

In general, power line communication is a communication method in which digital information is transmitted on a power waveform (50 to 60 Hz) of a power line supplying power using a power supply line as a medium, and provides convenience and economy without the need for a separate communication line.

Power line communication is divided into low-speed communication (approximately 9,600bps) using low frequency band below 450Khz and used for remote control and low speed home networking applications and high-speed communication (10Mbps) using high frequency band above 450Khz and 30Mhz.

However, the power line has a lower electromagnetic shielding function than a telephone line or a coaxial cable, and thus causes a large amount of electromagnetic radiation during communication, causing interference to wireless equipment using the same frequency band.

An object of the present invention is to solve the above problems, and to provide an audio signal transmitting apparatus for transmitting the audio signal output from the amplifier in real time in the entire premises through a power line wired in the premises.

In addition, another object of the present invention is to provide an audio signal receiving apparatus that is connected to any outlet installed in the premises to extract the audio signal transmitted through the power line in the premises and output through the speaker.

In addition, another object of the present invention is to use the audio signal transmitting apparatus and the receiving apparatus to build an on-premises broadcasting system or sound system without line installation between the amplifier and the speaker.

In addition, another object of the present invention is to connect the above-described audio signal receiver to a power outlet installed in the premises as needed to build an optional sound system or premises broadcast system.

In addition, another object of the present invention is to connect and utilize various audio devices (Home Theater, etc.) as an extension device to the audio signal receiving apparatus.

In addition, another object of the present invention is to set the ID for the receiver in the transmitter so that only the receiver authorized to listen can receive the audio signal transmitted through the premises power line normally.

In addition, another object of the present invention is to provide a transmission and reception of the audio signal of the stereo broadcast over the power line to provide a three-dimensional and real-life audio listening.

The present invention for realizing the above object is connected to the outlet of the power line installed in the premises coupled to the power line; A power supply unit for supplying the operating power required for each load element by down and rectifying the commercial AC power supplied from the power line according to the connection of the outlet; A signal input and mixer unit connected to the sound source source to interface the audio signal of the sound source; An EQ / preamp appropriately amplifying the level of the audio signal interfaced through the signal input and mixer and adjusting a specific frequency band from low to high; A level adjuster for setting amplification and sound range of the EQ / preamp; An oscillator for determining a frequency band of a transmission channel and generating a set unique frequency signal; A modulator for outputting an audio signal whose sound range is adjusted to a carrier of a frequency signal applied by the oscillator; An amplifier for amplifying a high frequency a transmission channel frequency applied by the modulator and transmitting the high frequency amplification to a power line wired through the combiner; It provides an audio signal transmission apparatus using a power line comprising a.

In addition, the present invention is connected to an outlet installed in any space of the premises connected to the power line, the combiner for extracting the frequency on which the audio signal is carried by matching the power line and impedance; A first filter unit which removes noise included in commercial AC power supplied from a power line according to connection to an outlet of the combiner so as not to affect the received audio signal; A power supply unit for supplying operating power to each load element by down and rectifying the AC power supplied from the power line; An amplifier for amplifying a frequency signal extracted by impedance matching from the combiner to a set tuning level; A second filter unit for band-pass filtering the amplified frequency signal to pass only a frequency signal of a required band; A demodulator extracting only the pure audio signal transmitted through a power line from the filtered frequency signal; An EQ / preamp which amplifies the output level of the extracted audio signal to an appropriate signal size and restores sound range; A level adjuster for setting the amplification level and sound range level of the EQ / preamp; A low frequency amplification and output unit for outputting an audio signal of which the level amplification and sound range are adjusted to a low frequency amplification to a set level and output through an output device connected thereto; It provides an audio signal receiving apparatus comprising a.

In addition, the first processing means for processing the audio signal for the left channel from the stereo audio signal input from the sound source source and transmits it to the power line; A second processing means for processing the audio signal for the light channel among the stereo audio signals input from the sound source source and transmitting the audio signal to the power line, and transmitting the stereo audio signal to the power line through two independent frequency channels. An apparatus for transmitting audio signals using power lines is provided.

In addition, the first processing means for receiving and processing the audio signal for the left channel of the stereo signal transmitted to two different independent frequency channels through the power line; And a second processing means for receiving and processing an audio signal for a light channel among stereo audio signals transmitted through two separate frequency channels through the power line. An audio signal receiver using a power line is provided.

In addition, the audio signal processing means for transmitting the audio signal input from the sound source source to the power line to the carrier signal of the transmission channel frequency; Including the authority setting means for setting the receiving authority for the receiving device for receiving the audio signal transmitted to the power line, so that the selective reception of the audio signal transmitted through the power line is made using a power line Provided is an audio signal transmitter.

In addition, the audio signal processing means is matched with the power supply line, and outputs through the audio output means connected to extract the audio signal transmitted through the power supply line by matching the impedance; And authority setting analysis means for extracting authority setting ID information matched with the power line and transmitted through the power line with impedance matching, and then determining whether or not the receiving authority is set to the power line to determine whether to output the main amplifier. Provided is an audio signal receiving apparatus using a power line, which receives an audio signal transmitted through a power line.

In addition, the transmission device for transmitting the audio signal provided from the sound source source to a carrier signal of a specific frequency to the entire power line in the premises through a power line wired in the premises; Provides an on-premises broadcasting system using an audio signal transmitting and receiving device, characterized in that it comprises a receiving device for receiving an audio signal transmitted through a power line by connecting a power plug to an outlet installed in any space of the premises and transmitting it to the corresponding space. .

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a first embodiment of an audio signal transmission apparatus using a power line according to the present invention, as shown, the filter unit 110, the power supply unit 120, the signal input and mixer unit 130, EQ / preamplifier 140, a level adjuster 150, a modulator 160, an oscillator 170, an amplifier 180, and a combiner 190.

The filter unit 110 removes the noise component included in the commercial AC power supplied through the power line when the transmitter according to the present invention is connected to a power line installed in the premises, preferably an outlet.

The power supply unit 120 down-regulates and rectifies the commercial AC power, from which the noise is removed by the filter unit 110, to supply the operating power required for each load element of the present invention.

The power supply unit 120 loads the voltage output through the bridge diode and the bridge diode for rectifying and converting the transformer and the down alternating voltage into a direct current by using a turns ratio between the primary and secondary coils. Outputs 12Vdc, 5Vdc, GND, -8Vdc voltages required for each load element, including a plurality of regulators that convert and output the voltage required for the element.

The signal input and mixer unit 130 is connected to a microphone, MP3, various acoustic devices, and other multimedia systems in a predetermined manner to mix the audio signal input for transmission through the power line.

The EQ / preamplifier 140 amplifies the level of the audio signal interfaced through the signal input and mixer 130 into the most appropriate signal according to the situation, and amplifies a specific frequency band, for example, a frequency band of 20 Hz to 20 Khz. It is arbitrarily adjusted so that an audio signal close to the original sound can be transmitted.

When a high frequency modulated audio signal is transmitted through a power line and received by a receiving device, a sound source signal of a high audible frequency band is detected at a relatively low level compared to a mid or low sound.

In other words, even when transmitting at the same audio signal level in an audible frequency band, a phenomenon in which a high frequency audio signal becomes relatively small occurs.

Therefore, in order to solve this problem, the bands and the intensity of the bass, the mid, the mid and the high, etc. are adjusted by adjusting the specific frequency band.

Preferably, the frequency corresponding to the bass sound is relatively low for the sound source to be transmitted, and the bass and treble are set relatively high.

The level adjuster 150 sets the level of the sound source band adjustment of the EQ / preamplifier 140 in a variable volume.

The oscillator 170 determines the frequency band of the transmission channel. The oscillator 170 generates a unique frequency signal according to a set clock and inputs it to the modulator 160.

The unique frequency signal generated by the oscillator 170 is selectively varied from 500KHz to 30Mhz according to the frequency division regulation for each country, and in the embodiment of the present invention, one example is to generate a frequency signal of 21.4Mhz. .

The modulator 160 outputs an audio signal whose sound range is adjusted through the EQ / preamplifier 140 to a carrier signal on an inherent frequency signal applied by the oscillator 170.

The amplifier 180 amplifies and outputs an audio signal carried in a carrier signal by a high frequency amplifier at a frequency higher than a set frequency, that is, a frequency level limited by a communication protocol or a law.

The combiner 190 matches the power line through the connection of the outlet, and transmits the audio signal amplified by the amplifier 180 through the power line.

The combiner 190 is directly connected to the ground of the power supply line and the chassis ground of the transmitter 100, as can be seen in the configuration shown in FIG. By transmitting the audio signal, the power flowing through the power line is not applied as noise to the transmitted audio signal.

In addition, as another example, as can be seen in the configuration shown in Figure 6, when the power supply line in the premises is different from each other around the ground, that is, when a separate ground line is provided, the problem that is not received is solved In this configuration, the power source flowing in the power supply line is transmitted by selectively connecting one power supply line to the ground of the power supply line and transmitting the high frequency amplified audio signal. Do not apply noise to the transmitted audio signal.

In addition, as can be seen from the configuration shown in FIG. 7 as another example, when the power line configuration in the premises is not separately installed with respect to the ground line due to the structure of the outlet or the regulation of power line wiring for each country, By transmitting a high-frequency amplified sound source signal to the power line of the premises through a power line consisting of one ground line, the power flowing through the power line is not applied as noise to the transmitted audio signal by securing a stable ground.

In the above, the connection of the power line allows the power plug of the apparatus to be connected through a connection with an outlet disposed at an arbitrary point in the premises, thereby ensuring mobility and thus eliminating the restriction on the installation site.

Operation of the audio signal transmission apparatus using the power line according to the present invention including the above function is as follows.

When the power plug of the transmitter 100 is connected to an outlet disposed at an arbitrary point in the premises, the combiner 190 and the power line are matched, and power is supplied through the outlet.

At this time, the filter unit 110 removes the noise included in the power supplied through the power line by the predetermined filtering and then supplies it to the power supply unit 120.

The power supply unit 120 down-regulates and rectifies the commercial AC power supplied through the power plug to process a DC voltage, and then supplies operating power required for each load element, preferably + 12Vdc, + 5Vdc, ground, and -8Vdc. do.

When the power switch (not shown) is turned on while operating power is supplied to each load element as described above, the oscillator 170 generates a unique frequency for the frequency band of the set transmission channel and inputs it to the modulator 160. .

The frequency signal unique to the oscillation is varied according to the frequency division regulations of each country, so that an optional frequency band can be selected for the band of approximately 500Khz to 30Mhz.

In this case, when an audio signal is input from a microphone, an MP3, various sound devices, and a multimedia system, which is a sound source source connected to the signal input and mixer unit 130, the signal input and mixer unit 130 mixes the EQ / Transmit to preamplifier 140.

The EQ / preamplifier 140 amplifies and adjusts the level of the audio signal interfaced through the signal input and mixer unit 130 to a sound source level of a frequency band selected by the level adjuster 150 to close to the original sound. Allow the signal to be sent.

When a high frequency modulated audio signal is transmitted through a power supply line and received by a receiving device, a sound source signal of a high audible frequency band is detected at a relatively low level compared to the mid and low sounds.

In other words, even when transmitting at the same sound source level in the audible frequency band, a phenomenon in which a high frequency sound source becomes relatively small occurs.

Therefore, in order to solve this problem, the EQ / preamplifier 140 relatively lowers the frequency band corresponding to the bass and the lower and the high frequency bands relative to the input audio signal. ) Is applied.

The modulator 160 outputs the audio signal whose sound range is adjusted through the EQ / preamp 140 to the amplifier 180 on the inherent frequency signal applied by the oscillator 170.

Accordingly, the amplifier 180 amplifies the audio signal carried in the carrier signal at a frequency higher than a set frequency, that is, a frequency level restricted by a communication protocol or a law, and applies it to the combiner 190.

At this time, the combiner 190 is matched with the power line of the structure as shown in FIG. 5 or the power source having the structure of FIG. 6 according to the connection of the outlet of the power plug to the audio signal is amplified and applied from the amplifier 180 The audio signal is carried on the power line through matching with the line or with the power supply line having the structure of FIG. 7 so as to be transmitted to the entire power line line wired in the premises.

3 is a first embodiment of an audio signal receiving apparatus using a power line according to the present invention. As shown, the first filter unit 210, the power supply unit 220, the combiner 230, the amplifier 240, 2 includes a filter unit 250, a demodulator 260, an EQ / preamplifier 270, a level adjuster 280, and a low frequency amplification and output unit 290.

The first filter unit 210 is connected to a power line connected to a plug and an outlet, and removes noise with respect to the power frequency so that the noise included in the power frequency does not affect the restored audio signal.

The power supply unit 220 is the operating power required for each load element constituting the present invention by down and rectifying the commercial AC power is filtered through the first filter unit 210, preferably + 12Vdc, + 5Vdc, ground Supply power of -8Vdc.

The combiner 230 is connected to the connection of the plug provided in the receiver and the outlet installed in the premises, and extracts the audio signal transmitted by impedance matching with the power line.

As can be seen in the configuration shown in FIG. 8 in connection with the power line of the combiner 230, the chassis ground of the receiver 200 and the ground of the power line are directly coupled to amplify high frequency through the power line. By receiving the received audio signal, the power flowing through the power line is not applied as noise to the received audio signal.

As another example, as can be seen in the configuration shown in Fig. 9, when the power lines in the premises are different from each other with respect to the ground, that is, when the ground lines are separately wired, By selectively connecting the power line to receive the transmitted audio signal, it is possible to completely receive the audio signal transmitted from the transmitter 100.

In addition, as can be seen from the configuration shown in FIG. 10 as another example, when the power line configuration in the premises is not separately installed with respect to the ground line due to the structure of the outlet or the regulation of power line wiring for each country, the power line one line and the ground It allows one line to be connected so that it can receive audio signals transmitted through power lines in the premises.

The connection of the power line of the receiver 200 allows the power plug of the apparatus to be connected through a connection with an outlet disposed at an arbitrary point in the premises, thereby eliminating restrictions on mobility and installation site. .

The amplifier 240 is a high frequency amplifier and amplifies and outputs a frequency signal extracted from the combiner 230 to a level set to match the reception tuning frequency.

The second filter 250 is a band pass filter that filters only the frequency of a specific band so that the demodulator 260 can stably detect a signal that is amplified and applied to match the tuning frequency of the amplifier 240. Do this.

In the case of the receiver 200, the frequency of the band pass filtering is configured to be approximately 20 kHz to be wider than the 15 kHz frequency band of the general radio, thereby improving frequency characteristics.

The demodulator 260 detects the tuning frequency applied through the second filter unit 250 and extracts only the pure audio signal contained in the carrier signal.

The EQ / preamplifier 270 amplifies the detected audio signal and processes it into a signal having a sufficient level to drive the main amplifier, and sets a specific frequency band low or high during the transmission process in the transmitter 100. The sound source level is restored to the original sound, and the output gain is adjusted for a signal of a specific frequency band to provide a more realistic three-dimensional sound.

The level adjuster 280 adjusts the substantial output of the audio signal through the speaker by setting the amplification level and sound range adjustment of the EQ / preamp 270.

The low frequency amplification and output unit 290 is connected to a main amplifier, a speaker or an ear jack, and the like to amplify and output an audio signal that is controlled and applied through the EQ / preamp 270 to a predetermined predetermined level.

Operation of the audio signal receiving apparatus using the power line according to the first embodiment of the present invention including the above function is as follows.

When the power plug of the receiver 200 is connected to an outlet disposed at an arbitrary point in the premises, the power line and the receiver 200 are connected to supply power through the outlet.

At the same time, the coupler 230 and the power line are connected in the same structure as in FIG. 8, in FIG. 9, or in FIG. 10.

In this case, the first filter unit 210 removes the noise of the power source frequency so that the noise included in the frequency of the power source supplied to the power line connected to the plug and the outlet does not affect the restored audio signal. .

The power supply unit 220 is the operating power required for each load element constituting the present invention by down and rectifying the commercial AC power is filtered through the first filter unit 210, preferably + 12Vdc, + 5Vdc, ground , -8Vdc power supply, the operation standby mode.

At this time, if the ON of the power switch (not shown) is selected, the combiner 230 extracts the audio signal transmitted through the power line from the transmitter 100 of FIG. Is authorized.

The amplifier 240 amplifies the applied frequency signal to a level set to match the received tuning frequency and applies it to the second filter unit 250, and the second filter unit 250 is amplified and applied to match the tuning frequency. The signal is applied to the demodulator 260 by performing filtering to pass only the frequency of a specific band so that the demodulator 260 can stably detect the signal.

Therefore, the demodulator 260 detects the tuning frequency applied through the second filter unit 250, extracts only the pure audio signal carried in the carrier signal, and applies it to the EQ / preamplifier 270.

The EQ / preamplifier 270 amplifies the detected audio signal into a sound range set by the level adjuster 280, and processes the detected audio signal into a signal of a sufficient level to drive the main amplifier, and transmits the signal from the transmitter 100. In the process, the sound source level in which the specific frequency band is set low or high is restored to the original sound, and the output gain is adjusted for the signal of the specific frequency band, and then applied to the low frequency amplification and output unit 290, whereby The audio signal received through the main amplifier, speaker or ear jack connected to the 290 is output.

Therefore, when the audio signal is transmitted to the power line of the premises by connecting the power plug of the transmitter 100 to the outlet of the structure shown in FIG. 2 at an arbitrary position in the premises, the receiver 200 may be located at any position of the premises. It is possible to listen to the audio signal transmitted from the transmitting device 100 by connecting the power plug of the premises.

In addition, as shown in FIG. 4, the receiver 200 further includes a level detector 291 and a switching unit 292 in the receiver 200 having the above-described configuration of FIG. 3. When there is no audio signal transmitted through the power line in the above-described transmitter 100 of FIG. 2, the output of the main amplifier of the receiver 200 is turned off and through the power line in the above-described transmitter 100 of FIG. 2. If there is an audio signal being transmitted, the main amplifier which is in the off state is automatically turned on so that the transmitted audio signal can be output.

That is, as shown in FIG. 4, the level detector 291 is connected to the output terminal of the EQ / preamplifier 270 to compare the level of the signal output from the EQ / preamplifier 270 with a set reference value. If the signal level is determined to be large and small, and the output of the signal is connected to an internal timer, and the transmission of the audio signal is not detected at the transmitter 100 for a predetermined time or more, the switching unit 292 is operated to operate the main amplifier. Off automatically.

When the output of the EQ / preamplifier 270 is detected while the output of the main amplifier is maintained as described above, the level detector 291 operates the switching unit 292 to maintain the main amplifier that is in the off state. Turn on to output the audio signal received through the power line.

FIG. 11 is a second embodiment of an audio signal transmission apparatus using a power line according to the present invention, and is a device for transmitting a stereo audio signal through a power line.

As can be seen in the drawing, the filter unit 110 connected to the power line, the power supply unit 102, the left channel (Left Channel) of the audio signal processing part 100A and the right channel (Right Channel) It consists of a part 100B which processes an audio signal.

The filter unit 110 removes the noise component included in the commercial AC power supplied through the power line when the transmitter according to the present invention is connected to a power line installed in the premises, preferably an outlet.

The power supply unit 102 down-regulates and rectifies the commercial AC power, from which the noise is removed by the filter unit 110, and supplies it to the operating power required for each load element of the present invention.

The power supply unit 102 loads a voltage output through the bridge diode and the bridge diode for rectifying and converting the transformer and the down AC voltage to down the commercial AC voltage by using the turns ratio of the primary coil and the secondary coil. Outputs 12Vdc, 5Vdc, GND, -8Vdc voltages required for each load element, including a plurality of regulators that convert and output the voltage required for the element.

The part 100A for processing the left channel audio signal includes an L-CH signal input and mixer unit 110A, a first EQ / preamplifier 120A, a first level adjuster 130A, and a first modulator 140A. And a first oscillator 150A, a first amplifier 160A, and a first coupler 170A.

The L-CH signal input and mixer unit 110A is connected to a microphone, MP3, various acoustic devices, and other multimedia systems in a predetermined manner to mix an audio signal of a stereo left channel input for transmission through a power line.

The first EQ / preamplifier 120A amplifies the audio signal level of the stereo left channel interfaced through the L-CH signal input and mixer 110A to the most appropriate signal according to a situation, and for example, a specific frequency band, for example, Randomly adjust the frequency band of 20Hz ~ 20Khz so that the audio signal close to the original sound can be transmitted.

When a high frequency modulated audio signal is transmitted through a power line and received by a receiving device, a sound source signal of a high audible frequency band is detected at a relatively low level compared to a mid or low sound.

In other words, even when transmitting at the same audio signal level in an audible frequency band, a phenomenon in which a high frequency audio signal becomes relatively small occurs.

Therefore, in order to solve this problem, the bands and the intensity of the bass, the mid, the mid and the high, etc. are adjusted by adjusting the specific frequency band.

Preferably, the frequency corresponding to the bass sound is relatively low for the sound source to be transmitted, and the bass and treble are set relatively high.

The first level adjuster 130A sets the level of the sound source band adjustment of the first EQ / preamplifier 120A in a variable volume.

The first oscillator 150A determines the frequency band of the transmission channel. The first oscillator 150A generates a unique frequency signal according to a set clock and inputs it to the first modulator 140A.

The intrinsic frequency signal generated by the first oscillator 150A is selectively varied from 500KHz to 30Mhz according to the frequency division regulation for each country. In the embodiment of the present invention, it is possible to generate a frequency signal of 21.4Mhz. Yes.

The first modulator 140A loads an audio signal of a stereo left channel whose sound range is adjusted through the first EQ / preamplifier 120A on a unique frequency signal applied by the oscillator 150A to the carrier signal.

The first amplifier 160A amplifies and outputs the audio signal of the stereo left channel carried on the carrier signal by a high frequency amplifier to a frequency level above a set frequency, that is, a frequency level restricted by a communication protocol or a law.

The first combiner 170A transmits the audio signal of the stereo left channel amplified by the first amplifier 160A through a power line.

In addition, the part 100B for processing the audio signal of the write channel includes an R-CH signal input and mixer unit 110B, a second EQ / preamplifier 120B, a second level adjuster 130B, and a second modulator ( 140B), the second oscillator 150B, the second amplifier 160B, and the second coupler 170B.

The R-CH signal input and mixer unit 110B is connected to a microphone, MP3, various acoustic devices, and other multimedia systems in a predetermined manner to mix an audio signal of a stereo light channel input for transmission over a power line.

The second EQ / preamplifier 120B amplifies the audio signal level of the stereo light channel interfaced through the R-CH signal input and mixer unit 110B to the most appropriate signal according to a situation, and for example, a specific frequency band, for example, Randomly adjust the frequency band of 20Hz ~ 20Khz so that the audio signal close to the original sound can be transmitted.

When a high frequency modulated audio signal is transmitted through a power line and received by a receiving device, a sound source signal of a high audible frequency band is detected at a relatively low level compared to a mid or low sound.

In other words, even when transmitting at the same audio signal level in an audible frequency band, a phenomenon in which a high frequency audio signal becomes relatively small occurs.

Therefore, in order to solve this problem, the frequencies corresponding to the bass bass are relatively low for the sound source transmitted, and the bass and treble are set relatively high.

The second level adjuster 130B sets the level of sound source band adjustment of the second EQ / preamplifier 120B in a variable volume.

The second oscillator 150B determines the frequency band of the transmission channel. The second oscillator 150B generates a unique frequency signal according to a set clock and inputs it to the second modulator 140B.

The inherent frequency signal generated by the second oscillator 150B is selectively varied from 500KHz to 30Mhz according to the frequency division regulation of each country, and in the embodiment of the present invention, it is possible to generate a frequency signal of 21.7Mhz. Yes.

The second modulator 140B loads an audio signal of a stereo light channel whose sound range is adjusted through a second EQ / preamplifier 120A on a unique frequency signal applied by the second oscillator 150B to a carrier signal. .

The second amplifier 160B amplifies and outputs the audio signal of the stereo light channel carried on the carrier signal by a high frequency amplifier at a frequency higher than a set frequency, that is, a frequency level limited by a communication protocol or a law.

The second combiner 170B transmits the audio signal of the stereo light channel amplified by the second amplifier 160B through a power line.

The first coupler (170A) and the second coupler (170B) and the power line is connected by the outlet of the power plug, the coupling relationship is connected as shown in Figures 5 to 7 described above, the detailed description thereof Omit.

Accordingly, FIG. 11 shows a stereo audio signal input from a sound source source using a stereo audio signal transmitter of the present invention as a carrier signal at a different modulation frequency for a left channel and a light channel, and then over the power line. By transmitting to a power line, a stereo audio signal is transmitted.

Since the operation relationship for signal processing for each channel is made as described with reference to FIG. 2, a detailed description thereof will be omitted.

12 is a third embodiment of an audio signal receiving apparatus using a power line according to the present invention, and is an apparatus for receiving a stereo audio signal transmitted through a power line.

As shown in the figure, the first filter unit 220 connected to the power line, the power unit 202, the part 200A for processing audio signals of the left channel (Left Channel) and the right channel (Right Channel) It consists of a part 200B which processes an audio signal.

The first filter unit 220 is a stereo by removing the noise component included in the commercial AC power supplied through the power line when the receiver according to the present invention is connected to a power line installed in the premises, preferably an outlet Allow the audio signal to stabilize.

The power supply unit 202 down-regulates and rectifies the commercial AC power, from which the noise is removed by the first filter unit 220, to supply the operating power required for each load element constituting the present invention.

The power supply unit 202 uses the winding ratios of the primary and secondary coils to convert the commercial AC voltages into voltages outputted through the bridge diodes and bridge diodes to rectify and convert the down AC voltages into direct currents. Outputs 12Vdc, 5Vdc, GND, -8Vdc voltages required for each load element, including a plurality of regulators that convert and output the voltage required for the element.

The part 200A for processing the left channel audio signal includes a first combiner 210A, a first amplifier 220A, a second filter unit 230A, a first demodulator 240A, and a first EQ / preamplifier 250A. And a first level regulator 260A, an L-CH low frequency amplification and output unit 270A.

In the above description, the first combiner 210A is connected to a plug provided in the receiver and an outlet installed in a premises, and extracts a frequency signal of a left channel from stereo audio signals transmitted through impedance matching with a power line. .

The first amplifier 220A is a high frequency amplifier. The first amplifier 220A amplifies and outputs a frequency signal extracted from the first combiner 210A to a level set to match the reception tuning frequency.

The second filter unit 230A is a band pass filter and a frequency of a specific band so that the first demodulator 240A can stably detect a signal that is amplified and applied to match the tuning frequency in the first amplifier 220A. Perform filtering that only passes.

The first demodulator 240A detects the tuning frequency applied through the second filter unit 230A and extracts only the pure audio signal of the stereo left channel on the carrier signal.

The first EQ / preamplifier 250A amplifies the audio signal of the detected stereo left channel and processes it into a signal having a sufficient level to drive a main amplifier, and processes a specific frequency band during transmission in the transmitter of FIG. It restores the sound source level set to low or high to the original sound, and adjusts the output gain for a signal of a specific frequency band to provide a more realistic three-dimensional sound.

The first level adjuster 260A adjusts the substantial output of the audio signal through the speaker by setting the amplification level and sound range adjustment of the first EQ / preamplifier 250A.

The L-CH low frequency amplification and output unit 270A is connected to a main amplifier, a speaker, or an ear jack, and amplified and output through the first EQ / preamplifier 250A.

In addition, the part 200B for processing the audio signal of the light channel may include a second combiner 210B, a second amplifier 220B, a third filter unit 230B, a second demodulator 240B, and a second EQ / preamplifier. 250B), a second level regulator 260B, and an R-CH low frequency amplification and output unit 270B.

In the above, the second coupler 210B is connected to the plug of the receiver and the outlet installed in the premises, and extracts the frequency signal of the light channel from the stereo audio signal transmitted by impedance matching with the power line. .

The second amplifier 220B is a high frequency amplifier. The second amplifier 220B amplifies and outputs a frequency signal of a light channel from a stereo audio signal extracted from the second combiner 210B to a level set to match the reception tuning frequency.

The third filter unit 230B is a band pass filter and a frequency of a specific band so that the second demodulator 240B can stably detect a signal that is amplified and applied to the tuning frequency in the second amplifier 220B. Perform filtering that only passes.

The second demodulator 240B detects the tuning frequency applied through the third filter unit 230B and extracts only the pure audio signal of the stereo light channel on the carrier signal.

The second EQ / preamplifier 250B amplifies the audio signal of the detected stereo light channel into a signal of sufficient level to drive the main amplifier, and the stereo light channel of the stereo light channel in the transmission process of FIG. The sound source level in which the specific frequency band is set low or high for the signal is restored to the original sound, and the output gain is adjusted for the signal in the specific frequency band to provide a more realistic three-dimensional sound.

The second level adjuster 260B adjusts the substantial output of the audio signal through the speaker by setting the amplification level and sound range adjustment of the second EQ / preamplifier 250B.

The R-CH low frequency amplification and output unit 270B is connected to a main amplifier, a speaker or an ear jack, and the like, and amplifies and outputs an audio signal that is controlled and applied through the second EQ / preamplifier 250B to a predetermined predetermined level.

The power line connection of the first coupler (210A) and the second coupler (210B) is made by connecting the outlet of the power plug, the coupling relationship thereof is connected as shown in Figs. 8 to 10 described above, Omit.

Therefore, when the stereo audio signal is transmitted to the power line of the premises by connecting the power plug of the stereo audio signal transmitter to the outlet of the structure of FIG. 11 at an arbitrary location in the premises, the receiver of the receiver of FIG. The power plug can be connected to an outlet at any location in the premises to listen to stereo audio signals transmitted from the transmitter.

FIG. 13 is a third embodiment of an audio signal transmission apparatus using a power line according to the present invention. In transmitting audio signals through a power line in a premises, only a designated receiver is set through the power line. The audio signal is transmitted.

As shown in the figure, it is divided into an audio signal transmission part A and a part B for setting an ID for the receiver.

The audio signal transmission part (A) is made of the same or similar configuration as the configuration of FIG. 2 described above, and a description thereof will be omitted instead of the description.

Part B for setting the ID of the receiver includes an external input device and a display device 310, a microcomputer 311, a memory unit 312, a modulator 313, an oscillator 314, and a second amplifier 315. And a second coupler 316.

The external input device and the display device 310 designate ID information for granting listening authority to each receiving device connected to the power line of the premises, and display an operation relationship and a result of the ID designation.

The microcomputer 311 controls the overall process of ID designation for granting the listening authority to the receiving apparatus.

In the memory unit 312, an operation algorithm required for ID assignment of a receiver and ID information for each of the receivers specified are set in a table.

The ID information specified for the receiver is used as the serial number of the receiver.

The oscillator 314 generates a frequency of a band set so as to carry authorization ID information for each receiver in a carrier signal.

The modulator 313 modulates and outputs ID information for each receiver applied from the microcomputer 311 in a format set on a carrier of a frequency signal of a set band applied by the oscillator 314.

The second amplifier 315 is a high frequency amplifier. The ID information of each receiver is loaded on a carrier signal to amplify and modulate the frequency to be output.

The second coupler 316 is connected to the power line in the same structure as in FIGS. 5 to 7 to perform a function of transmitting a signal applied from the second amplifier 315 to the power line.

Therefore, in transmitting the audio signal to the power line of the premises, the transmitter sets the ID for each receiver and grants the listening authority to the receiver, thereby preventing the indiscriminate listening of the audio signal, which is important when used as an in-house infrastructure. Selective reception of information is made so that stability and reliability can be provided for transmission of audio signals and information using power lines.

14 is a fourth embodiment of an audio signal receiving apparatus using a power line according to the present invention.

As shown in the figure, a part (C) for processing and outputting an audio signal received from a power line and a part (D) for extracting an ID for a listening authority from a frequency received through the power line.

Part C for processing and outputting the received audio signal is the same as or similar to the configuration of FIG. 3 or 4 described above, and thus a detailed description thereof will be omitted.

Part (D) for extracting the ID for the listening authority from the frequency received through the power line is the second combiner 410, the second amplifier 411, the third filter unit 412, the demodulator 413, The microcomputer 414 includes a microcomputer 414, a memory unit 415, an input / display device 416, and a switching unit 417.

The second coupler 410 is connected by connecting the plug of the device to an outlet installed in the premises, and extracts a frequency carrying an ID for authorizing the receiving device from the power line through impedance matching.

The second coupler 410 and the power line are connected to each other in the structure of FIGS. 8 to 10 described above, and a detailed description thereof will be omitted.

The second amplifier 411 amplifies the frequency containing the ID extracted from the second combiner 410 to a predetermined level and applies it to the second filter unit 412.

The second filter unit 412 filters the frequency signal set by the high frequency amplification by the band pass filter and applies the frequency band to the demodulator 413.

The demodulator 413 detects the filtered frequency and extracts the ID contained in the carrier signal of the frequency and applies it to the microcomputer 414.

The microcomputer 414 compares the ID extracted from the demodulator 413 with the reference table data set in the memory unit 415 to determine whether an ID assigned to the microcomputer 414 exists, and inputs / displays information about the ID. In this case, the output of the main amplifier 418 can be made through the switching unit 417 if there is an ID assigned thereto.

However, if there is no ID assigned to the receiver, since the corresponding receiving apparatus is not granted the listening authority, the microcomputer 414 cuts the output of the main amplifier 418 through the switching unit 417 through the power line. It makes it impossible to listen to the transmitted audio signal.

Also, the input / display device 416 is instructed about the processing information thereof.

In the case of implementing the premises broadcasting system using the audio signal transmitting and receiving device, as shown in FIG. 15, a power plug provided in the audio signal transmitting device having the configuration of FIG. 2, 11, or 13 described above ( 10A) is connected to any outlet 30 wired in the premises, and the power plug 20A provided in the audio signal receiver having the configuration of FIG. 3, 4, 12, or 14 described above is wired in the premises. It is comprised by connecting to arbitrary outlets 30 which become.

In constructing the receiving device, broadcast transmission to the corresponding space can be arbitrarily adjusted by connecting or not connecting the power plug of the receiving device to the outlet 30 according to whether or not to broadcast the premises or audio broadcasting.

As described above with reference to FIG. 13, the transmission apparatus sets an ID for each receiver to grant the right to listen, thereby enabling the selective broadcast system to be constructed.

When the premises broadcasting system is constructed as described above, the audio signal input from the sound source source connected to the transmitting device is collectively transmitted as the carrier data at the oscillation frequency and transmitted through the power line installed in the premises.

Therefore, the receiving device connected to the outlet 30 of the corresponding space for transmitting the audio signal transmitted through the power line or the premises broadcast is performed by extracting, tuning and detecting the signal transmitted through the power line through the above-described procedure. Only pure audio signals are extracted and output.

Therefore, the audio signal transmitted through the power line from the transmission apparatus disposed in a predetermined space of the premises is transmitted through the receiving apparatus connected to the outlet 30 of the various spaces in the premises to perform a collective premises broadcast.

In the case of transmitting a batch of music broadcasts through the power line through the transmission device, the user can listen to or reject the broadcast at the user's convenience. It is possible to listen to music broadcasts transmitted in a batch without any other audio system.

Although the construction of the premises broadcasting system has been described above, the application of the present invention installs one audio device in a specific space, connects a sound source to an audio signal transmission device, and installs it in an arbitrary space in the premises. An audio signal receiver is connected to 30 to transmit and receive an audio signal over a power line, thereby providing an implementation of an acoustic system for the entire premises.

That is, by connecting a plurality of audio receivers so that surround stereo sound can be made to the outlet 30 installed in any limited space, it is possible to construct an acoustic device that provides a more realistic sense.

 As described above, the present invention transmits a batch of audio signals through a power line in any space of the premises, and provides a transmission of an audio signal transmitted through a power line by connecting a receiver to an outlet installed in the premises. The separate wiring equipment required to install the on-premises broadcasting system is excluded, and there is an advantage of providing cost reduction by providing a miniaturization of the on-premises broadcasting system.

In addition, the free mobility of the transmitting device and the receiving device is provided, there is an advantage that can be built in the broadcast system in the desired place as needed.

In addition, by setting and transmitting the ID of the receiving apparatus in order to grant the listening authority to the receiving apparatus, the transmitting apparatus provides security in the transmission of information using the on-premises broadcasting system.

1 is a schematic configuration diagram of a conventional premises broadcasting system configuration.

2 is a configuration diagram of a first embodiment of an audio signal transmission apparatus using a power line according to the present invention.

3 is a block diagram of a first embodiment of an audio signal receiving apparatus using a power line according to the present invention.

4 is a configuration diagram of a second embodiment of an audio signal receiving apparatus using a power line according to the present invention.

5 is a configuration diagram of a first embodiment of a coupler connected to a power line in an audio signal transmission apparatus using a power line according to the present invention.

6 is a configuration diagram of a second embodiment of a coupler connected to a power line in an audio signal transmission apparatus using a power line according to the present invention.

7 is a configuration diagram of a third embodiment of a coupler connected to a power line in an audio signal transmission apparatus using a power line according to the present invention.

8 is a configuration diagram of a first embodiment of a coupler connected to a power line in an audio signal receiving apparatus using a power line according to the present invention.

9 is a configuration diagram of a second embodiment of a coupler connected to a power line in an audio signal receiving apparatus using a power line according to the present invention.

10 is a configuration diagram of a third embodiment of a coupler connected to a power line in an audio signal receiving apparatus using a power line according to the present invention.

11 is a configuration diagram of a second embodiment of an audio signal transmission apparatus using a power line according to the present invention.

12 is a configuration diagram of a third embodiment of an audio signal receiving apparatus using a power line according to the present invention.

13 is a configuration diagram of a third embodiment of an audio signal transmission apparatus using a power line according to the present invention.

14 is a configuration diagram of a fourth embodiment of an audio signal receiving apparatus using a power line according to the present invention.

15 is a schematic configuration diagram of a premises broadcasting system using a power line according to the present invention.

Claims (33)

A coupler that matches the power line with an outlet connection of the power plug; A power supply unit for supplying the operating power required for each load element by down and rectifying the commercial AC power supplied from the power line according to the connection of the outlet; A signal input and mixer unit connected to the sound source source to interface the audio signal of the sound source; An EQ / preamp appropriately amplifying the level of the audio signal interfaced through the signal input and mixer section and adjusting the sound range of a specific frequency band; A level adjuster for setting amplification and tuning of the EQ / preamp; An oscillator for determining a frequency band of a transmission channel and generating a set unique frequency signal; A modulator for outputting an audio signal whose sound range is adjusted to a carrier of a frequency signal applied by the oscillator; An amplifier for amplifying a high frequency a transmission channel frequency applied by the modulator and transmitting the high frequency amplification to a power line wired through the combiner; Audio signal transmission apparatus using a power line comprising a. The method of claim 1, And the combiner directly couples the chassis ground of the transmitter and the ground of the power line so that power flowing through the power line is not applied as noise to the transmitted audio signal. The method of claim 1, The combiner selectively connects any one power line around the ground to an audio signal modulated with the same phase and level when the power lines in the premises are different from each other with respect to the ground. . The method of claim 1, According to the structure of the outlet or the regulation of power line wiring for each country, the combiner generates a high-frequency amplified sound source signal through a power line composed of one power line and one ground line if the power line configuration of the premises is not separately installed with respect to the ground line. The audio signal transmission apparatus using the power line, characterized by transmitting to a power line of the power line, to ensure a stable ground. The method of claim 1, The power supply unit includes a transformer for lowering a commercial AC voltage by using a winding ratio between a primary coil and a secondary coil; A bridge diode for rectifying the downed alternating voltage into a direct current; And a plurality of regulators for converting and outputting a voltage output through the bridge diode into a voltage required for each load element. The method of claim 1, The oscillator selectively oscillates the frequency band of 500KHz to 30Mhz, the band is determined according to the frequency classification regulations for each country. A combiner connected to an outlet installed in any space of the premises to connect a power line, and extracting a frequency on which an audio signal is carried by impedance matching with the power line; A first filter unit which removes noise included in commercial AC power supplied from a power line according to connection to an outlet of the combiner so as not to affect the received audio signal; A power supply unit for supplying operating power to each load element by down and rectifying the AC power supplied from the power line; An amplifier for amplifying a frequency signal extracted by impedance matching from the combiner to a set tuning level; A second filter unit for band-pass filtering the amplified frequency signal to pass only a frequency signal of a required band; A demodulator extracting only the pure audio signal transmitted through a power line from the filtered frequency signal; An EQ / preamplifier for amplifying the output level of the extracted audio signal to an appropriate signal size and selectively adjusting a specific frequency band from low to high; A level adjuster for setting the amplification level and sound range level of the EQ / preamp; A low frequency amplification and output unit for outputting an audio signal of which the level amplification and sound range are adjusted to a low frequency amplification to a set level and output through an output device connected thereto; Audio signal receiving apparatus comprising a. The method of claim 7, wherein The combiner directly couples the chassis ground of the receiver and the ground of the power line so that power flowing through the power line is not applied to the received audio signal as noise. The method of claim 7, wherein And the combiner selectively connects any one power line around the ground line when the power lines of the premises are different from each other with respect to the ground. The method of claim 7, wherein The coupler is transmitted through a power line by connecting a power line consisting of one power line and one ground line in case the power line configuration of the premises is not separately installed with respect to the ground line according to the structure of the outlet or the regulation of power line wiring by country. Audio signal receiver using a power line, characterized in that the impedance matching the audio signal. The method of claim 7, wherein And connecting the receiver only to any outlet in a specific space arranged in the premises to provide local transmission of audio signals transmitted through the power line. The method of claim 7, wherein A level detector connected to an output of the EQ / preamp to detect and compare an output signal of the EQ / preamp to determine and control on / off of a receiver; And a switching unit which is switched under the control of the level detector to control the output of the main amplifier on / off. The method of claim 12, The level detector turns off the output of the main amplifier after the set delay time when the level of the signal detected at the output terminal of the EQ / preamp is equal to or less than the set reference value, An audio signal receiver using a power line, wherein the output of the main amplifier is turned on when the level is equal to or greater than the set reference value. First processing means for processing an audio signal for a left channel among stereo audio signals input from a sound source source and transmitting the same to a power line; Among the stereo audio signals input from the sound source source, a second processing means for processing the audio signal for the light channel and transmitting it to the power line to transmit the stereo audio signal to the power line through two different independent frequency channels. An apparatus for transmitting audio signals using power lines. The method of claim 14, The first processing means includes an L-CH signal input and mixer unit for mixing and interfacing audio signals of a stereo left channel input from a sound source source; An EQ / preamp for adjusting an output level and a sound range level for an audio signal of a stereo left channel interfaced through the L-CH signal input and mixer; A level adjuster for setting the output and sound range levels of the EQ / preamp 120A; An oscillator for determining a frequency band of a transmission channel for transmitting over a power line with respect to an audio signal of a stereo left channel and oscillating a frequency thereof; A modulator for outputting an audio signal of a stereo left channel whose sound range is adjusted through an EQ / preamplifier to an inherent frequency signal applied by the oscillator on a carrier signal; An amplifier for high frequency amplifying the audio signal of the stereo left channel carried on the carrier signal by the modulator to a set frequency level; And a coupler coupled to the power line by outlet coupling of a power plug to transmit an audio signal of a stereo left channel amplified by the amplifier to a power line. The method of claim 14, The second processing means includes: an R-CH signal input and mixer unit for mixing and interfacing audio signals of a stereo light channel input from a sound source source; An EQ / preamp for adjusting an output level and a sound range level for an audio signal of a stereo light channel interfaced through the R-CH signal input and mixer; A level adjuster for setting the output and sound range levels of the EQ / preamp 120A; An oscillator for determining a frequency band of a transmission channel for transmitting the audio signal of the stereo light channel through a power line and oscillating a frequency thereof; A modulator for outputting an audio signal of a stereo light channel whose sound range is adjusted through an EQ / preamplifier to an inherent frequency signal applied by the oscillator on a carrier signal; An amplifier for high frequency amplifying the audio signal of the stereo light channel carried on the carrier signal by the modulator at a set frequency level; And a combiner for matching with a power line through an outlet coupling of a power plug to transmit an audio signal of a stereo light channel amplified by the amplifier to a power line. First processing means for receiving and processing an audio signal for a left channel among stereo signals transmitted over two independent frequency channels through a power line; And second processing means for receiving and processing an audio signal for a light channel among stereo audio signals transmitted to two different independent frequency channels through the power line. Audio signal receiver using a power line, characterized in that for receiving a stereo audio signal transmitted through the power line. The method of claim 17, The first processing means includes: a combiner for matching the power line with an outlet connection of a power plug and extracting an audio signal of a left channel from stereo audio signals transmitted through the power line with an impedance match; An amplifier for high frequency amplifying the level of the signal extracted from the combiner; A filter unit configured to band pass filter the high frequency amplified signal to extract only a signal having a predetermined band; A demodulator extracting only an audio signal of a stereo left channel from the filtered signal; An EQ / preamplifier for restoring the amplification level and sound range of the extracted stereo left channel audio signal; A level adjuster for setting an amplification level and range restoration of the EQ / preamp; Including a low frequency amplification and output unit for outputting the audio signal of the level amplified and the range-reconstructed stereo left channel through the audio output means connected to the low frequency amplification, And receiving and restoring a signal for a left channel of a stereo audio signal transmitted through a power line. The method of claim 17, The second processing means includes: a combiner for matching with a power line through an outlet connection of a power plug, and extracting an audio signal of a light channel from stereo audio signals transmitted through the power line by matching impedance; An amplifier for high frequency amplifying the level of the signal extracted from the combiner; A filter unit configured to band pass filter the high frequency amplified signal to extract only a signal having a predetermined band; A demodulator extracting only an audio signal of a stereo light channel from the filtered signal; An EQ / preamp for restoring the amplification level and sound range of the audio signal of the extracted stereo light channel; A level adjuster for setting an amplification level and range restoration of the EQ / preamp; Including a low frequency amplification and output unit for outputting the audio signal of the level amplified and sound-restored stereo light channel through the audio output means connected to the low frequency amplification, Audio signal receiver using a power line, characterized in that for receiving and restoring the signal for the light channel of the stereo audio signal transmitted through the power line. Audio signal processing means for transmitting an audio signal input from a sound source source to a carrier signal of a transmission channel frequency and transmitting it to a power line; And authority setting means for setting a receiving authority with respect to a receiving apparatus for receiving an audio signal transmitted to the power line. An audio signal transmission apparatus using a power line, characterized in that the selective reception of the audio signal transmitted through the power line. The method of claim 20, The audio signal processing means includes: a signal input and mixer unit for interfacing an audio signal input from a sound source source; An EQ / preamp for adjusting the level amplification and sound range of the audio signal interfaced through the signal input and mixer; A level adjuster for setting amplification and sound range of the EQ / preamp; An oscillator for determining a frequency band of a transmission channel and generating a set unique frequency signal; A modulator for outputting an audio signal whose sound range is adjusted to a carrier of a frequency signal applied by the oscillator; An amplifier for amplifying a transmission channel frequency applied by the modulator and transmitting the high frequency amplification to a power line wired through the combiner; A combiner for matching a power line with an outlet coupling of a power plug and transmitting a high frequency amplified audio signal from the amplifier to a power line; Audio signal transmission apparatus using a power line comprising a. The method of claim 20, The authority setting means may include an input and a display device which, in transmitting an audio signal and information to a power line, designates a receiving authority for a receiving apparatus and displays an operation state thereof; A microcomputer that sets an ID set by matching a serial number with respect to a receiving device to which the receiving authority is designated; A memory unit for storing reception right ID information set for the reception device; A modulator for modulating reception right ID information for the reception device set in the microcomputer; An oscillator configured to oscillate a frequency of a specific band and apply it to the modulator so that the reception authority ID information is carried on a carrier of an oscillation frequency; An amplifier for high frequency amplifying the ID information specifying the modulated reception authority; A combiner for matching with a power line through an outlet connection of a power plug to transmit modulated ID information for the high frequency amplified reception right assignment to a power line; Audio signal transmission apparatus using a power line, characterized in that for specifying a receiving device for receiving audio signals (various information) to be transmitted to the power line. Audio signal processing means matched with the power supply line, and configured to extract audio signals transmitted through the power supply line through impedance matching and output the audio signal through the sound output means connected thereto; And authority setting analysis means for extracting authority setting ID information matched with the power line and transmitted through the power line with impedance matching, and then determining whether or not the receiving authority is set to the power line to determine whether to output the main amplifier. Audio signal receiving apparatus using a power line, characterized in that for receiving an audio signal transmitted through the power line. The method of claim 23, The audio signal processing means includes: a combiner for matching with a power line through an outlet connection of a power plug, and extracting a frequency on which an audio signal transmitted through the power line is carried through matching of an impedance; An amplifier for high frequency amplifying the level of the frequency signal extracted by the combiner; A filter unit configured to band pass filter the high frequency amplified signal to extract only a signal having a predetermined band; A demodulator extracting only an audio signal from a frequency signal from the filtered signal; An EQ / preamp for restoring the amplification level and sound range of the extracted audio signal; A level adjuster for setting an amplification level and range restoration of the EQ / preamp; And a low frequency amplification and output unit configured to transmit the level amplified and sound range restored audio signals through low frequency amplification and connected audio output means. Audio signal receiver using a power line, characterized in that for receiving and restoring the audio signal transmitted through the power line. The method of claim 23, The authority setting analyzing means includes: a combiner for matching the power line with the outlet coupling of the power plug, and extracting a frequency signal including the privileged ID information through impedance matching; An amplifier for high frequency amplifying the frequency signal extracted from the combiner into a predetermined band; A filter unit configured to pass-band only the set band by bandpass filtering the high frequency amplified frequency signal; A demodulator extracting only authority setting ID information from the filtered frequency signal; A microcomputer that analyzes the authority setting ID information extracted by the demodulator, determines whether the ID information assigned to the device is included, and determines the output of the main amplifier; And a switching unit which switches according to a control signal applied from the microcomputer to control the output of the main amplifier. The method of claim 25, The microcomputer transmits the audio signal restored by the audio signal processing means through the main amplifier when the ID information extracted from the power line includes the ID information assigned to the microcomputer, and does not include the assigned ID information. If not, the audio signal receiving apparatus using a power line, characterized in that to cut the output through the main amplifier. A transmission device which loads an audio signal provided from a sound source source to a carrier signal of a specific frequency and transmits the audio signal to the entire power line in the premises through a power line wired in the premises; An on-premises broadcasting system using an audio signal transmitting / receiving device comprising a receiving device for receiving an audio signal transmitted through a power line by connecting a power plug to an outlet installed in an arbitrary space of a premises and transmitting the same to a corresponding space. The method of claim 27, The transmitter includes a coupler for matching with a power line connected to a power plug to an outlet installed in the premises; A power supply unit for supplying the operating power required for each load element by down and rectifying the commercial AC power supplied from the power line according to the connection of the outlet; A signal input and mixer unit connected to the sound source source to interface the audio signal of the sound source; An EQ / preamp appropriately amplifying the level of the audio signal interfaced through the signal input and mixer, and arbitrarily adjusting a range of frequencies from low to high sound in a specific frequency band; A level adjuster for setting amplification and sound range of the EQ / preamp; An oscillator for determining a frequency band of a transmission channel and generating a set unique frequency signal; A modulator for outputting an audio signal whose sound range is adjusted to a carrier of a frequency signal applied by the oscillator; An amplifier for amplifying a high frequency a transmission channel frequency applied by the modulator and transmitting the high frequency amplification to a power line wired through the combiner; On-premises broadcasting system using an audio signal transmission and reception apparatus using a power line comprising a. The method of claim 27, The receiver includes a coupler connected to an outlet installed in an arbitrary space of the premises to connect a power line, and extract a frequency on which an audio signal is carried by impedance matching with the power line; A first filter unit which removes noise included in commercial AC power supplied from a power line according to connection to an outlet of the combiner so as not to affect the received audio signal; A power supply unit for supplying operating power to each load element by down and rectifying the AC power supplied from the power line; An amplifier for amplifying a frequency signal extracted by impedance matching from the combiner to a set tuning level; A second filter unit for band-pass filtering the amplified frequency signal to pass only a frequency signal of a required band; A demodulator extracting only a pure audio signal transmitted through a power line from the filtered frequency signal; An EQ / preamplifier for amplifying the output level of the extracted audio signal to an appropriate signal size and selectively adjusting a specific frequency band from low to high; A level adjuster for setting the amplification level and sound range level of the EQ / preamp; A low frequency amplification and output unit for outputting an audio signal of which the level amplification and sound range are adjusted to a low frequency amplification to a set level and output through an output device connected thereto; A premises broadcasting system using an audio signal transceiver using a power line comprising a. The method of claim 27, The transmitter and the receiver are connected to an outlet in a specific space in the premises, and the broadcast system using the audio signal transceiver using a power line, characterized in that implemented in the local premises broadcast system. The method of claim 27, The receiver is connected to an outlet installed at a specific place, the broadcast system using the audio signal transmitting and receiving device using a power line, characterized in that the audio or premises broadcasting transmitted through the power line in the premises to be transmitted only in a specific area. . The method of claim 27, The receiver device is an on-premises broadcasting system using an audio signal transmitting and receiving device using a power line, characterized in that provided in a plurality of at least one according to the area of the space to be installed. The method of claim 27, And the transmitter sets a listening authority for the receiver, so that audio or information transmitted through the power line is selectively received.