KR100431946B1 - Multi-room sound system - Google Patents

Abstract

A multiroom sound system is disclosed. The multi-room sound system includes a sound source unit including at least one sound source for outputting an original sound signal to be supplied to a remote room, and a main system unit for controlling reproduction of the source unit and distributing an original sound signal to the room. A zone system unit which is located in a room and receives an original sound signal output from the sound source through the main system unit and transmits the original sound signal to an internal amplifier and / or an external amplifier, and performs a control function included in a remote controller of the sound source unit; And a speaker receiving the amplified sound signal through the internal amplifier and / or the external amplifier of the zone system unit and outputting sound in the form of sound waves.

The multi-room sound system according to the present invention enables to listen to a different level of sound according to the user's choice for each room, enjoy high-quality sound with low noise in all rooms, and the sound source possessed by the user with high-quality sound I can hear it. In addition, since the amplifier does not exist in the main system, the multi-room sound system according to the present invention has an effect of preventing the failure phenomenon due to excessive heat generation of the main amplifier as in the conventional multi-room sound system.

Description

Multi-room sound system

The present invention relates to a multiroom sound system, and more particularly, to a multiroom sound system for distributing at least one sound source to be shared in a plurality of rooms spaced apart from the sound source.

The multi-room sound system supplies sound signals output from various sound sources such as CDs, cassette players, and tuners to a plurality of rooms spaced apart from the sound sources, and the rooms are equipped with separate control panels and speakers. A system that allows sharing of sound sources. In recent years, the use of a large number of rooms, such as hotels and inns, as well as a business building, as well as a relatively large area of private homes with a large number of rooms are increasing.

However, the conventional multi-room sound system has a problem in that speakers corresponding to the output level of the amplifier must be installed in each room. In addition, there is a problem that it is difficult to enjoy a high-quality sound by amplifying the signal output from the source and transmitting the amplified signal to each room because the electrical characteristics and sound quality are degraded. In addition, the conventional multi-room sound system is difficult to control all the functions of the source directly in the room, and the music provided by the main system can only be tuned and listened to the music of the main system, thereby satisfying users of various ages and personalities living in each room. There is a problem that does not give. In addition, the conventional multi-room sound system has a problem in that a large amount of wiring is required because the amplified sound signal is distributed to each zone system through the speaker line. In addition, the conventional multi-room sound system has a problem in that as the number of amplifiers corresponding to the number of zone systems is provided in the main system, a large amount of heat is generated in the main system, thereby causing a failure.

The technical problem to be achieved by the present invention is to listen to a different level of sound according to the user's choice for each room, to enjoy high-quality sound with low noise in all rooms, and to listen to the sound source possessed by the user at high quality In addition to providing a multi-room sound system, you can control all the functions of the source directly from the zone.

1 is a block diagram showing the structure of a multi-room sound system according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining FIG. 1 in more detail.

3 is a diagram illustrating an example of a remote controller used to remotely control a zone system unit included in the multi-room sound system according to the present invention.

In order to achieve the above object, the multi-room sound system according to the present invention is a multi-room sound system for distributing at least one or more sound sources to be shared in a plurality of rooms spaced apart from the sound source, the original sound to be supplied to a remote room A sound source unit including at least one sound source for outputting a signal; A main system unit controlling reproduction of the source unit and distributing an original sound signal to a room; A zone system unit located in a remote room and receiving an original sound signal output from the sound source through the main system unit and transmitting the original sound signal to an internal amplifier and / or an external amplifier, and performing a control function included in a remote controller of the sound source unit; And a speaker for receiving the amplified sound signal through the internal amplifier and / or the external amplifier of the zone system unit and outputting sound in the form of a sound wave.

The zone system unit may further include: providing a menu for registering a button for remote control of a source as an SRC button; And a zone controller configured to store and execute a program code for executing the SRC button by the user according to the menu. The main controller of the main system unit may include: an interface unit configured to register information registered by an arbitrary zone system unit; It is preferable to include; a storage unit for storing information about each SRC key to be able to use the same in any other zone system unit connected to the main system unit through.

In addition, the main system unit responds to a command received from a user by transmitting a remote controller and an SRC button signal input from a zone by an IR remote output to an IR receiver of a sound source using a variable IR carrier frequency of 30 to 60 khz. A main control unit for outputting a source control command; And an interface unit configured to transmit a sound signal output from the sound source unit to a room zone, receive an IR signal transmitted from the room zone, and transmit and receive a control signal between the main controller and the zone controller. It is preferable.

The multi-room sound system may further include a remote controller including a control unit capable of performing a zone control function and a control unit capable of performing an SRC control function, wherein the zone system unit is output from the remote controller. An IR sensor for detecting an IR signal by the IR sensor, wherein the zone controller comprises: transmitting the detected signal to the zone controller and the main controller, respectively; Determining whether the control signal sent from the remote controller is a command for controlling the zone system unit, and if so, performing a control operation corresponding to the command and ignoring it otherwise; storing and executing the program code for performing The main controller determines whether the control signal sent from the remote controller is a command for controlling the source unit, and if so, performs a control operation corresponding to the command, and otherwise ignores the stored program code. It is preferable to carry out.

The main control unit preferably receives a doorbell signal or an incoming call signal from an external doorbell or telephone and transmits the received signal to the room zone through the interface unit.

In addition, the main controller may be configured to check whether powers of all the zone systems are turned off, and to cut off power of all sources connected to the main system if it is determined that the power of all zone systems is turned off. It is desirable to save and run.

The zone system unit may further include: a keypad for receiving a command for source control from a user; An LCD display indicating the state of the zone system and the operating state of the source; A zone controller which stores and executes program codes for performing steps of function setting using a menu button and a direction button; And an expansion card having an external sound input terminal to which a sound output terminal of the external device can be connected.

The zone system unit may further include an optical sensor configured to detect a brightness of an external light and output a signal representing the brightness of the detected light. The zone controller may be configured to respond to a signal output from the light sensor. It is desirable to store and execute program code that controls the brightness of the backlight.

The zone controller may further include inputting a display name of a source through a keypad; Setting the input display name to be used as the display name of the source; And if there is no input, setting a preset name as a display name of the source; storing and executing the program codes for performing the operation, and storing the source name as a default in the zone system unit.

The expansion card may further include a sound output terminal for outputting an original signal that does not go through the amplifier of the zone with respect to the sound of the source.

The zone system unit may further include receiving a status confirmation request from at least one zone system unit of the connected zone system unit, confirming a state of the requested zone system unit in response to the received request, and confirming the confirmed state information. Zone control unit for storing and executing the program code for performing the step of sending to the requested zone system unit, and displaying the state of the zone using the state information.

The zone controller may further include generating a power off command signal including an ID identifier information of the zone system unit by receiving a command for turning off power of the corresponding zone system through a keypad from a user, and generating the generated power off command signal. Transmitting to the interface unit, receiving the power-off command signal from the main system unit through the interface unit, and relaying the power-off command signal received from the main control unit to the zone system to match the ID identifier included in the power-off command signal. It is preferable to store and execute the program codes for performing the step of powering off the zone system corresponding to the ID.

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

1 is a block diagram illustrating a structure of a multiroom sound system according to an exemplary embodiment of the present invention. FIG. 2 is a view for explaining FIG. 1 in more detail. 2 is often referenced below. Referring to FIG. 1, a multi-room sound system according to an exemplary embodiment of the present invention includes a sound source unit 10, a main system unit 12, a zone system portion 14, a remote controller 16, and an external amplifier. 18, and a speaker 19.

The sound source unit 10 includes a first source 1002, a second source 1004, and an Nth source 1006 when N is a predetermined positive integer. The sound source may include at least one of a CD, a cassette tape, a tuner, and an auxiliary input terminal. The power of each source connected to the main system unit 12 is connected using an outlet power strip connected to the main. Here, when the main system unit operates in the power saving mode, the main system unit may turn off the power source of the source connected to the outlet outlet using the outlet switch of the main system.

The main system unit 12 includes a power supply unit 1202, a source distribution unit 1204, an MP3 decoding unit 1206, an interface unit 1208, a main control unit 1210, and a web connection unit 1212. The web connection unit 1212 may be connected to the Internet 1220 to receive various contents such as MP3 from the ISP server 1224. The zone system unit 14 includes an LCD display 1402, a keypad 1404, a zone controller 1406, an interface unit 1410, an expansion card 1412, a built-in amplifier 1414, an IR sensor 1424, a microphone ( 1426, and an optical sensor 1430. The expansion card 1412 is provided with an external sound input terminal (not shown), and the expansion card 1412 and the external source 15 are connected to the external sound input terminal by connecting the sound output terminal of the external source 15. The external source 15 may be connected to various audio devices such as, for example, a mini cassette player, an MP3 player, or an MD player. In addition, the expansion card 1412 can be extended to a card having a new function, it is more preferable to allow the zone system to automatically recognize when connected.

The operation of the multi-room sound system as described above will be described below.

When the main power is supplied to the power supply unit 1202 of the main system unit 12, power is supplied to the sound source unit 10, and the sound source unit 10 includes a first source 1002 and a second source 1004. And a N-th source 1006, for example, a CD source, a cassette tape (TAPE), a tuner (TUNER), and an auxiliary input terminal (AUX). The sound signal is output by being reproduced according to the command of " The sound signal output from the sound source unit 10 is transmitted to the room zone through the interface unit 1208. In addition, when a doorbell signal or an incoming call signal is received from the doorbell 2210a or the telephone 2210b installed outside the main system unit 12 in the main controller 1210, the received signal is received through the interface unit 1208. Sent to the room zone. In addition, the web connection unit 1212 connected to an Internet Service Provider (ISP) server through the Internet 1220 receives web data in a packet unit, and the received web data is transmitted to the room zone through the interface unit 1208. The main controller 1210 receives a control command signal for source control from each room through the interface unit 1208, and generates and outputs a control signal for controlling each source according to the received control command signal. In the present embodiment, the main controller 1210 transmits a remote controller and an SRC button signal input from the zone by an IR remote output to an IR receiver (not shown) of the source. More preferably it is desirable to transmit using a variable IR carrier frequency of 30 to 60 kHz. The IR remote output control signal is transmitted to the source IR receiver (not shown) via a cable, and the source IR remote control is performed by attaching a patch type IR remote output provider to the source IR receiver (not shown). It is desirable to. In this way, a plurality of sources can be controlled independently. This type of control has the effect of preventing another source from malfunctioning in the course of controlling one source. When MP3 data is received through the Internet 1220, the MP3 decoding unit 1206 outputs an analog audio signal by decoding the received MP3 data. The source distribution unit 1204 receives and distributes N sound signals output from the sound source unit 10 including N sources and analog sound signals output from the MP3 decoding unit 1206.

On the other hand, the source may continue to operate even when all zone systems are powered off. In this case, an element of power waste may occur. In order to solve this problem, the main control unit 1210 provided in the main system unit of the multi-room sound system according to the present invention checks whether the power of all the zone systems is turned off, and the power of all the zone system units is turned off. When it is confirmed, it saves the program codes that perform the step of turning off the power of all the sources connected to the main system so that when the source does not need to be turned on, the main system shuts down the power and forces the power off. In this way, a power saving effect can be achieved by preventing the source from continuing to operate even when all zone systems are powered off.

On the other hand, the zone control unit 1406 of the zone system portion 14 stores program codes for performing the steps of function setting using only the menu button and the direction button, so that various control menus can be accessed through the LCD display 1402. To provide. For example, in the sound menu you can adjust the BASE, TREB, BALANCE, and LOUD. In the STORE Menu, changing the source name individually in each zone is recommended. It is possible. In addition, the source remote control (SRC) menu can independently control the sources. To do this, the keys used in the source remote control must be registered in advance in the SRC button. In addition, by providing a backlight menu, you can select the color of the backlight or adjust the brightness. It is also possible to remotely power off other zone systems by providing a zone off menu. Further, in the multi-room sound system according to the present embodiment, since the external device 1414 can be connected through the expansion card 1412, it is more preferable to provide an external audio menu. The external audio menu provides functions to control the input / output of the external audio signal. In the audio input selection menu, when the audio input / output card is installed in the basic system, the number of sources can be expanded, and the selection button can be used to sequentially select the sources. As described above, the zone controller 1406 may be implemented by a microcomputer (also referred to as a microcomputer) that reads and executes a program stored in a programmable ROM. In this way, it is possible to set a function using the menu method.

Also, the zone control unit 1406 of the zone system unit 14 receives a status check request from at least one zone system unit of the connected zone system unit, and confirms the state of the requested zone system unit in response to the received request. Storing the state of all zones in one zone by storing the program codes for performing the steps of sending the confirmed status information to the requested zone system section and displaying the status of the corresponding zone using the status information. It provides a function to check. For example, if a symbol of a source (for example, S1 to S4, Ext.) Is displayed below the zone number, the zone system is powered on. If the symbol is not displayed, the zone system is powered off. Can be displayed to help. It is also possible to identify which source each zone is using. Immediately below the zone number is the source number in use. This number is shown to the user as the source number that the zone system is currently using. In addition, when the source is controlled by using the SRC key, the operating state of the current source can be displayed and confirmed.

In addition, the multi-room sound system according to the present invention provides a function of turning off the power of other zones in any zone based on the function of confirming the state of each zone in any zone as described above. In general, zone systems, eg, Z1 to Z6, are installed in different rooms. In this case, when there is a user in a room where an arbitrary Z1 is installed, it is inconvenient for the user to go to the room and turn off the zone system in order to turn off the zone system power in another room.

In order to solve this problem, the zone system unit of the multi-room sound system according to the present invention provides a remote power off function. This remote power off function is based on the ability to receive and share state information from any of the zones described above. The user can check the status of each zone system shown on the LCD display and confirm that the power is turned on in the zone system unit installed in the room where no one is present. The user receives a command for powering off the corresponding zone system through the keypad, and the zone controller 1406 generates a power off command signal accordingly. The generated power off command signal is transmitted to the interface unit 1208 through the interface unit 1410. The power off command signal includes ID identifier information of the zone system unit to be powered off. The main system unit 12 receives the power off command signal through the interface unit 1208, and the main control unit 1210 relays the received power off command signal to the zone system. Next, the zone system corresponding to the ID corresponding to the ID identifier included in the power off command signal is powered off.

In addition, the LCD display 1402 and the keypad 1404 included in the zone system unit 14 may provide an easy user interface to display a powered-on zone and a source number selected by the zone. More preferably, the LCD display uses a graphic LCD and applies a pop-up method used in a window menu. In addition, the LCD display 1402 can be programmed to display the name of the source selected by its zone. In addition, the source buttons can be programmed to easily change the source. For example, the menu may be cycled in order of cassette tape TAPE, CD CD, AUX, and TUNER. In addition, by using the up / down buttons of the direction button included in the keypad unit 1404 to be able to easily adjust the volume. In addition, the storage unit (not shown) provided in the zone control unit 1406 may use the name stored as a default in the zone system unit or allow the user to register a desired name. For example, you can save CDs, AUXs, TAPEs, and TUNERs to sources 1,2,3,4, etc. by default and save them in a ROM connected to a microcomputer (not shown) while changing the CD to another name. You can also type in a name of your choice, such as Classic (name stored in storage) or John (your name). As described above, the zone controller 1406 may be implemented by a microcomputer (also referred to as a microcomputer) that reads and executes a program stored in a programmable ROM.

Next, the interface unit 1410 of the zone system unit 14 receives a sound signal through the interface unit 1208. The received sound signal may be amplified by the built-in amplifier 1414 and listened through the speaker 19. It is also possible to listen to sound using the speaker 19 connected to the zone system unit, or alternatively, to use the external amplifier 18 and the speaker 18a together with the speaker 19 connected to the zone system. Do. It is also possible to use only external amplifier speakers.

The multi-room sound system as described above does not have an amplifier in the main system, but by incorporating an amplifier in each zone system, it is possible to achieve high sound quality by preventing an increase in the signal-to-noise ratio caused by transmitting the amplified signal, as well as the size of each room. Depending on the importance, it is possible to selectively apply high quality or stall type amplifiers. In addition, since the amplifier does not exist in the main system, the multi-room sound system according to the present invention has an effect of preventing the failure phenomenon due to excessive heat generation of the main amplifier as in the conventional multi-room sound system. In addition, since the multi-room sound system as described above distributes the original sound signal that is not amplified, the amount of wiring required can be reduced by not using the speaker wires.

On the other hand, the expansion card 1412 in the zone system 14 is provided with an external sound input terminal and the sound output terminal of the external device 1414 is connected to the external sound input terminal, so that the expansion card 1412 is connected to the external device 1414. Is connected. The external device 1414 may be connected to various audio devices such as, for example, a mini cassette player, an MP3 player, or an MD player. In addition, the expansion card 1412 can be extended to a card having a new function, it is more preferable to allow the zone system to automatically recognize when connected. As a result, the zone system unit 14 can select and listen to one of a plurality of sources including the source through the expansion card 1412.

In addition, a doorbell signal or an incoming call signal is received from the doorbell 2210a or the telephone 2210b installed outside the main system unit 12 by the main controller 1210 and transmitted to the room zone through the interface unit 1208. The received signal may be received through the interface unit 1410 of the zone system unit 14 and the received signal may be amplified by the built-in amplifier 1414 to be heard through the speaker 19. This feature has the advantage of being able to normally receive contact from the outside while listening to music. Meanwhile, the MP3 decoding unit 1422 decodes MP3 music, and the decoded analog signal is amplified through the external amplifier 18, and the amplified signal can be heard through the speaker 19.

In addition, the zone system unit 14 includes an optical sensor 1430 that detects the brightness of the external light and outputs a signal indicating the brightness of the detected light, and the zone controller 1406 is output from the optical sensor 1430. Stores and executes program code for controlling the brightness of the backlight of the LCD display in response to the signal. Accordingly, the zone controller 1406 provides convenience to the user by lowering the brightness of the backlight when the external lighting is dark according to the signal output from the light sensor 1430 and increasing the brightness of the backlight when the external lighting is bright.

3 illustrates an example of a remote controller used to remotely control a zone system unit included in the multi-room sound system according to the present invention. Referring to FIG. 3, a keypad of the remote controller 16 used to remotely control the zone system unit included in the multi-room sound system according to the present invention includes a control unit 162 and an SRC control function capable of performing a zone control function. It is provided with a control portion 164 that can be performed. It is possible to control all the source functions with only this remote control. To this end, by registering a button on the source remote controller with the SRC button of the remote controller 16, the SRC button can function as the button of the source remote controller. For example, if you register the power on / off button of the CD player remote controller provided with the CD player to button 1 of the SRC, and then press the button 1 of the SRC without the CD player remote controller when the CD is in use, You can turn on / off the CD player. SRC allows remote control of all sources connected to the mains. That is, the zone system unit 14 and the remote controller 16 included in the multi-room sound system according to the present embodiment include an SRC (Source Remote Control) function. This function can replace multiple remote controllers by storing multiple source remote controllers individually. When the SRC button is pressed, the selected source in the zone is controlled. For this purpose, registration of the SRC button is required. The zone controller stores and executes program code for providing a menu for registering a button for remote control of a source as an SRC button, and for registering a SRC button by a user according to the menu.

For example, you can register the power on / off button of the CD player remote control provided by the CD player to button 1 of the SRC, and then press the button 1 of the SRC without the CD player's remote control when the CD player is in use. In section 14 it is possible to remotely turn on / off the CD player. SRC allows remote control of all sources connected to the main system. In addition, as will be described later, information about each SRC key can be stored in the main and shared in all zones. Therefore, if one zone system unit registers the SRC button, the other system unit may share the registered SRC button. When a zone system of any zone (eg Z1, Z2, ..., Z6) is installed, register the source remote control buttons of the CD player to the SRC button in any zone system (eg Z3). . In this case, all information about the SRC button is stored in a storage unit (not shown) in the source control unit 1204 in the main system, and the SRC button information is shared by all zone systems from Z1 to Z6. The function can be used by other zone systems such as Z1 Z2 Z4 Z5 Z6. In addition, most remote controls use an IR frequency of 38 kHz, but considering that there are remote controls using some 56 kHz, the multiroom sound system according to the present invention allows for selective determination within the range of 30 kHz to 60 kHz.

Now, a process of selectively controlling the zone system unit 14 or the source unit 10 using the remote controller will be described. The IR signal output from the remote controller 16 is detected by the IR sensor, and the detected signal is transmitted to the zone controller 1406 and the main controller 1210, respectively. The zone control unit 1406 determines whether the control signal sent from the remote controller 16 is a command for controlling the zone system unit, and if so, performs the control operation corresponding to the command, and otherwise ignores it. In addition, the main controller 1210 determines whether the control signal sent from the remote controller 16 is a command for controlling the source unit, and if so, performs a control operation corresponding to the command, and otherwise ignores it. Thus, source control and zone system control can be performed with one remote controller.

In the present embodiment, a storage unit (not shown) is provided in the main control unit 1210 of the main system unit 12, and information on each SRC key is stored in the storage unit (not shown) in all zones. By sharing, it is possible to use the information registered in any zone system unit equally in any other zone system unit connected to the main system unit 12 via the interface 1208.

In addition, the audio output terminal (not shown) provided in the expansion card of the zone system unit of the multi-room sound system according to the present invention does not go through an amplifier of the zone for the sound of the source currently selected by the zone, that is, an original (not amplified) original) This is a terminal that outputs a signal, and is used when listening to music by connecting a new external amplifier 28 to the outside without using an internal amplifier. If you have a better amplifier can be used by connecting the sound output terminal to a separate external amplifier (28). In this case, you can use the speaker of the zone system or the speaker installed in the external amplifier to listen to the sound, and provide the function of listening by using both at the same time. In addition, the multi-room sound system according to the present invention has a zone system expansion card (with a source input and a sound output terminal) when there is a system that plays a sound such as a Walkman ™, a portable CD player, or a computer that is used or used personally. When connected to the source input terminal provided by, you can listen using the amplifier of the zone system. In addition, each zone system expansion card is provided with a sound output terminal, so that an external amplifier and a speaker can be installed to provide a variety of sounds. That is, by using an amplifier (not shown) that may be provided in the zone system or by connecting two speakers to the zone system amplifier and two speakers to the external amplifier, a total of four speakers are used or the external amplifier 18 Only can be used. The multi-room sound system as described above can easily implement a 5.1 channel function applied in Dolby AC-3 or DTS (Digital Theater System).

In addition, the multi-room sound system according to the present invention is provided with a clock (not shown) in the zone system unit 14 to turn on at a predetermined time using a CD, a tuner, a tape, or the like. After 30 minutes or 1 hour, the system can be turned off automatically. In addition, the multi-room sound system according to the present invention can provide a simple interphone function between zone systems by providing a microphone 1426 in the zone system unit 14.

In addition, the multi-room sound system as described above may stop the sound currently output through the speaker of each zone when the external signal such as doorbell or incoming call signal for a while and inform the user about the external signal.

In the above embodiment, the main system and the entire system are connected by wires. However, if the main system and the zone system are provided with an FM transceiver, the main system performs an unmanned FM broadcasting station function to transmit sound of a source and perform necessary data communication. can do. In this case, there is a convenience in that no wire is installed between the main system and the zone system, and there is an advantage that the zone system does not need to be attached to the wall.

As described above, the multi-room sound system according to the present invention allows the user to listen to different levels of sound according to the user's choice for each room, enjoy high-quality sound with low noise in all rooms, and the sound possessed by the user. Sources can also be heard in high quality. In addition, since the amplifier does not exist in the main system, the multi-room sound system according to the present invention has an effect of preventing the failure phenomenon due to excessive heat generation of the main amplifier as in the conventional multi-room sound system. In addition, since the multi-room sound system as described above distributes the original sound signal that is not amplified, the amount of wiring required can be reduced and the installation can be easily performed by not using the speaker wires. In addition, the multi-room sound system according to the present invention saves power by monitoring the status of another zone system or powering off one zone system, and preventing the source from continuously operating when all zone systems are turned off. It provides various additional functions that are convenient for the user, such as a function that can achieve the effect, and an interphone function. Furthermore, the zone system of the multi-room sound system according to the present invention provides convenience to the user by controlling the brightness of the backlight of the LCD display according to the brightness of the external lighting.

Claims (12)

A multi-room sound system for distributing at least one sound source for sharing in a plurality of rooms spaced apart from the sound source, A sound source unit including at least one sound source for outputting an original sound signal to be supplied to a remote room; A main system unit controlling reproduction of the source unit and distributing an original sound signal to a room; A zone system unit located in a remote room and receiving an original sound signal output from the sound source through the main system unit and transmitting the original sound signal to an internal amplifier and / or an external amplifier, and performing a control function included in a remote controller of the sound source unit; And And a speaker for receiving the amplified sound signal through the internal amplifier and / or the external amplifier of the zone system unit and outputting sound in the form of sound waves. The method of claim 1, wherein the zone system unit, Providing a menu for registering a button for remote control of the source as an SRC button; And a zone controller configured to store and execute a program code for performing the step of registering the SRC button by the user according to the menu. The main control unit of the main system unit, And a storage unit for storing information on each key of the SRC so that information registered by any zone system unit can be equally used by any other zone system unit connected to the main system unit through the interface unit. Multi-room sound system. The method of claim 1, wherein the main system unit, Sends a source control command in response to a command received from the user by transmitting a remote control and SRC button signal input from the zone by the IR remote output to the IR receiver of the sound source using a variable IR carrier frequency of 30 to 60 kHz. Main controller; And And an interface unit for transmitting a sound signal output from the sound source unit to a room zone, receiving an IR signal transmitted from the room zone, and transmitting and receiving a control signal between the main control unit and the zone control unit. Featured multi-room sound system. The method of claim 3, The multi-room sound system, And a remote controller having a control unit capable of performing a zone control function and a control unit capable of performing an SRC control function, wherein the zone system unit detects an IR signal output from the remote controller by an IR sensor. It further comprises an IR sensor, The zone controller transmitting the detected signals to the zone controller and the main controller, respectively; Determining whether the control signal sent from the remote controller is a command for controlling the zone system unit, and if so, performing a control operation corresponding to the command and ignoring it otherwise; storing and executing the program code for performing The main controller determines whether the control signal sent from the remote controller is a command for controlling the source unit, and if so, performs a control operation corresponding to the command, and otherwise ignores the stored program code. Multi-room sound system, characterized in that the running. The method of claim 3, wherein the main control unit, A multi-room sound system, characterized in that a door bell signal or an incoming call signal is received from an external door bell or telephone and transmitted to the room zone through the interface unit. The method of claim 3, wherein the main control unit, Storing and executing program codes for confirming whether all zone systems are powered off, and for disconnecting power of all sources connected to the main system when it is confirmed that all zone system units are powered off. Multi-room sound system. The method of claim 1, wherein the zone system unit, A keypad that accepts commands for source control from a user; An LCD display indicating the state of the zone system and the operating state of the source; A zone controller which stores and executes program codes for performing steps of function setting using a menu button and a direction button; And And an expansion card having an external sound input terminal to which a sound output terminal of an external device can be connected. The method of claim 7, wherein The zone system unit, And an optical sensor configured to detect a brightness of an external light and output a signal representing the brightness of the detected light. The zone control unit, And storing and executing program code for controlling the brightness of the backlight of the LCD display in response to a signal output from an optical sensor. The method of claim 7, wherein the zone control unit, Inputting a display name of a source through a keypad; Setting the input display name to be used as the display name of the source; And If there is no input, setting the preset name as the display name of the source; storing and executing the program codes to perform the And a storage unit for storing the source name as a zone system unit as a default. The method of claim 7, wherein the expansion card, And a sound output terminal for outputting an original signal that does not go through an amplifier of a zone with respect to the sound of a source. The method of claim 1, wherein the zone system unit, Receiving a status check request from at least one of the connected zone system sections, checking the status of the requested zone system section in response to the received request, and sending the confirmed status information to the requested zone system section And a zone controller configured to store and execute program codes for displaying the state of the corresponding zone using the state information. The method of claim 11, wherein the zone control unit, Receiving a command for powering off the corresponding zone system through a keypad from a user, generating a power off command signal including ID identifier information of the zone system unit, transmitting the generated power off command signal to the interface unit, main Receiving the power-off command signal from the system unit through the interface unit, and relaying the power-off command signal received from the main control unit to the zone system, the zone system corresponding to the ID corresponding to the ID identifier included in the power-off command signal. A multi-room sound system, characterized in that for storing and executing program codes for performing the step of turning off the power.