KR100923872B1 - Audio signal output apparatus of home theater system and that of using signal output method - Google Patents

Abstract

The present invention receives an audio signal to a surround speaker through a wireless transmission to an audio output device of a home theater system, or adds an interface device connected to a multimedia device to provide a power source or a sound source to the surround speaker through an interface device. The present invention relates to an audio signal output device of a home theater system that can receive 5.1 channel wireless or 3.1 channel (wired) and 2 channel (wireless) speakers, and an output method using the same.

The configuration is implemented in the RF method of 2.4GHz ISM band for wireless communication, the interface device connected to a multimedia device such as PC, MP3P, CDP to wirelessly transmit the power or sound signal of the multimedia device to the surround speaker, And an FM radio function unit which is driven by wireless communication with the interface device, and the surround speaker is embodied in an RF scheme of a 2.4 GHz ISM band for wireless communication and can receive an FM radio signal therein according to the scheme. A receiver for wirelessly receiving the sound signal transmitted from the second transmitter of the interface device by the RF method, and the digital sound signal received at the receiver is converted into an analog signal for transmitting sound through the transmitter of the surround speaker. Confirm the D / A converter and the states of the FM radio function unit, the receiver unit and the D / A convert unit. And transmitting the analog signal changed in the D / A converter or the radio sound signal received in the FM radio function unit to the transmitter according to the control signal of the second controller and the second controller for controlling the overall operation of the surround speaker. It characterized in that it further comprises an amplifier for amplifying the sound signal.

Description

AUDIO SIGNAL OUTPUT APPARATUS OF HOME THEATER SYSTEM AND THAT OF USING SIGNAL OUTPUT METHOD}

The present invention relates to an audio signal output device of a home theater system and a signal output method using the same, and more particularly, to receive an audio signal to a surround speaker through wireless transmission to an audio output device of a home theater system, or to transmit a PC, MP3P, By adding an interface device connected to a multimedia device such as a CDP and providing a power source or a sound source, a sound signal is transmitted to the surround speakers through the interface device to utilize 5.1-channel wireless or 3.1-channel (wired) and 2-channel (wireless) speakers. The present invention relates to an audio signal output device of a home theater system and a signal output method using the same.

As is well known, the receiver of an audio device usually refers to a product that integrates an FM / AM radio and an amplifier capable of amplifying voice from an external source. The receiver connects to audio equipment such as CD players, cassette decks, and other video equipment such as VCRs, DVD players, and set-top boxes to decode and amplify the audio signal from the source, transfers it to the speaker, and switches the video at the same time. To pass.

AV receivers have emerged as a key device in the rapidly growing home theater system. In general, a home theater system is a video and audio system that uses a multi-channel speaker to input video signals such as a movie or VCR or a TV broadcast signal. A system that can be enjoyed at home is composed of an AV source device, an AV receiver, a speaker, and a video device. Among them, the AV receiver is the backbone of the home theater, and the AV receiver has a built-in surround digital signal processing (DSP) and Classification is based on the output, fidelity, etc. of the built-in amplifier, which has evolved along with surround technology, with the main functions being the selection and output of audio and video from the source device, and the decoding and amplification of the surround sound.

These home theater systems are becoming a new cultural trend in residential space with the development of high definition image technology called digital and the production of large digital TV products such as PDP and LCD.

1 is a front view showing an example of the configuration of a conventional home theater system. That is, as shown in order to satisfy the requirements of the home theater, a large screen digital display device 1 in which a normal image such as a projector, projection, PDP, LCD, etc. is reproduced, and basic 5.1 channel, DTS, Dolby, etc. It is composed of a DVD player (7) with a built-in amplifier function, and a speaker system that is connected to the amplifier (6), which is an amplifier of the DVD player (7), to output sound.

The speaker system is located in the center between the left and right paired front speakers 2 and the left and right front speakers 2, which are usually located on the front wall side of the living room, together with the digital display device 1 and the DVD player 7, in the case of 5.1-channel. A center speaker 3 and a subwoofer 4, and a pair of left and right surround speakers 5 located on the rear wall side of the living room.

Here, the front speaker 2 reproduces music and effect sounds, the center speaker 3 reproduces a human voice, the surround speaker 5 reproduces effect sounds and background sounds, and the server woofer reproduces heavy bass sounds.

On the other hand, the home theater system in the configuration of the general home theater as described above should be configured to meet the functional demands that meet the user's preferences through the mechanical device elements, but the interior design that can fit the spatial characteristics of the installation in the home Aspects should also be considered important.

However, the conventional home theater has a problem that the dignity of the interior is lost due to the exposure of a plurality of cables for connecting each component, it is difficult to arrange the exposed cable.

In addition, the cable connection between the amplifier function of the front DVD player and the rear speaker located at the rear is very difficult due to the existing furniture arrangement, and thus the installation position of the rear speaker is inappropriate. There was a problem in that the optimum sound is not obtained.

In addition, since the loudspeaker's sound output height must be matched to the viewer's listening height, the loudspeaker's size is large and heavy, and occupies a lot of installation space. There was a problem.

In addition, since the server woofer 4 and the surround speaker 5 are connected to each other using a wired cable, the periphery of the installed cable is complicated, and the aesthetics of the living room environment are hindered, and the server woofer 4 is always used. As the front speaker 2, the center speaker 3 or the surround speaker 5 are driven in accordance with the driving, there is a limitation in the use of the home theater system.

The present invention has been made to solve the above problems, the object of which is to embed a power amplifier in the server woofer that separates only the low range from the channel, wireless connection function, FM radio function and 30W output digital class of surround speakers By applying the -D AMP to guarantee the mobility and independence of the surround speaker, the audio signal output device of the home theater system that eliminates the difficulties of cable routing and space utilization of the 5.1 channel speaker and secures the aesthetics of the living room environment, and uses the same It is to provide a signal output method.

In addition, another object of the present invention is to form a USB type or a connection jack type in a multimedia device such as PC, MP3P, CDP, etc. to further configure the wireless interface device of the transmitting unit responsible for transmitting the sound of the multimedia device power supply or An audio signal output device and a signal using the home theater system that receives a sound source and transmits it to a surround speaker equipped with an RX board through a wireless path, thereby giving a new function to an unused surround speaker when there is no existing 5.1 channel content. To provide an output method.

According to a feature of the present invention for achieving the above object, a large-screen digital display device that reproduces a normal image such as a projector, projection, PDP, LCD, etc., and built-in amplifier function to support basic 5.1 channels, DTS, Dolby, etc. A server woofer having a built-in wireless TX board and an active power amplifier and a server woofer configured to be connected to the display device and the DVD player, and outputting only the low range of sound to the display device and the DVD player. A center speaker connected to a wired cable and transmitting sound effects and background music according to driving of the DVD player, and a wired connection to the server woofer and located on a front wall side of a living room, and supporting the center speaker according to driving of the DVD player. While a pair of front speakers sending a dialogue and background music three-dimensionally while the server woofer A pair of surround speakers driven by line communication and emphasizing the sound effect according to the DVD player driving, two optical input terminals, two coaxial input terminals, and one analog input which can be connected to the display device or the DVD player. A first control unit configured to check the connection state of the input unit consisting of a terminal, the center speaker and a pair of printer speakers, and a wired connection to the center speaker and the pair of pruner speakers, and to control the overall operation of the server woofer. And a first wireless communication system configured to perform a 2.4 GHz ISM band RF method for wireless communication with the surround speaker to wirelessly transmit a corresponding sound to the surround speaker in response to a control signal of the first controller according to the driving of the display apparatus or the DVD player. Audio signal output of home theater system composed of transmitter The apparatus of claim 1, wherein the surround speaker includes an FM radio function unit capable of receiving an FM radio signal separately from an RF scheme of a 2.4 GHz ISM band, and an acoustic signal transmitted from the first transmitter of the server woofer by the RF scheme. A receiver capable of receiving wirelessly, a D / A converter for converting a digital sound signal received at the receiver into an analog signal for transmitting sound through a transmitter of a surround speaker, the FM radio function unit, receiver and D / A A second control unit which checks the state of the A convert and controls the overall operation of the surround speaker, and a radio signal received by the analog signal or the FM radio function unit changed in the D / A convert according to a control signal of the second control unit Audio of the home theater system further comprises an amplifier for amplifying an audio signal to send a signal to the transmitter. No. provides an output device.

In this case, according to an additional feature of the present invention, the wireless speaker is implemented in the RF scheme of the 2.4GHz ISM band, and connected to a multimedia device such as a PC, MP3P, or CDP to supply power or sound signals of the multimedia device to the surround speaker. It is preferable that the interface device further comprises a wireless transmission to the receiver.

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In addition, according to an additional aspect of the present invention, the interface device is connected to a multimedia device such as a PC, MP3P, CDP, USB type or a jack type analog input unit, the analog input unit according to the connection state or connection of the multimedia input A third control unit for checking whether power and sound signals are received or controlling overall operation of the interface device, and a surround sound signal transmitted according to the multimedia driving according to a control signal of the third control unit through wireless communication; It is preferably configured to further include a second transmitter for wireless transmission to the receiver of the speaker.

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An audio signal output device and a signal output method using the same in a home theater system according to the present invention include a circuit capable of wireless transmission in a server woofer in a server woofer, a wireless receiver in a surround speaker, an FM radio function, and a 30W output digital class. By applying the -D AMP to ensure the mobility and independence of the surround speakers can eliminate the cable routing and space utilization of the 5.1-channel speakers.

In addition, it is connected to a multimedia device such as a PC, MP3P, CDP, etc. to configure the wireless interface device of the transmitter to transmit sound of the multimedia device, and receive the power or sound source of the multimedia device and surround the RX board through the wireless path. By transmitting to the speaker, it is possible to maximize the use of surround speakers that are not used when there is no existing 5.1 channel content.

In addition, 5.1-channel wireless speaker and wireless interface composed of center speaker, front speaker, surround speaker, and server woofer by the wireless interface device of the transmitter that is connected to multimedia devices such as PC, MP3P, CDP, etc. Devices, 3.1-channel wired and surround speakers are formed, allowing users to choose from a wide variety of home theater systems.

In addition, by using AFH 2.4GHz ISM band RF method and optimized antenna, which is strong against noise in wireless environment, wireless speaker ensures stable communication according to noise such as microwave oven, and implements wireless FM radio function to surround speaker and connects to multimedia. The sound source transmitted through the air interface device or the sound source transmitted through the server woofer can be selectively utilized to guarantee various uses of the home theater system.

In addition, by using a wireless module and an audio amplifier, a wireless digital amplifier is formed on the surround speakers to ensure the mobility of the surround speakers, allowing the user to freely change the configuration of the home theater system according to the user's taste and living room structure. It can raise interest and provide a clean living environment.

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

2 is a block diagram showing a configuration of a home theater system according to the present invention, FIG. 3 is a block diagram showing a configuration of a server woofer according to FIG. 2, and FIG. 4 is a block diagram showing a configuration of a surround speaker according to FIG. 5 is a block diagram illustrating a configuration of an interface device of a home theater system as an embodiment according to the present invention, and FIG. 6 is a block diagram illustrating an internal configuration of the interface device of FIG. 5.

Looking at the detailed configuration of the present invention, a large-screen digital display device that reproduces a normal image such as a projector, projection, PDP, LCD, etc., and reference numeral 10 denotes a DVD player or a set-top device, which is a basic 5.1 channel, A DVD player or a set-top device with an audio function supporting DTS, Dolby, etc. represents an input device, and 20 is a server woofer, which has a power amplifier therein, and the input device of the display device and the DVD player ( 10) in response to the driving of the DVD player 10 to emphasize the bass, such as explosion sound, thunder sound, and outputs and transmits the bass of the sound in order to express the movie.

Reference numeral 30 is a center speaker, which is wired to the server woofer 20 and transmits dialogue, sound effects, and background music in a movie according to the operation of the DVD player 10. 40 is connected to the server woofer 20. It is a pair of front speakers connected by wire and normally located on the front wall of the living room and transmitting three-dimensional dialogue and background music while supporting the center speaker 30 according to driving of the DVD player, wherein 50 is the server woofer 20. And a pair of surround speakers that transmit wirelessly to the TV player 10 and transmit the corresponding sound in order to more realistically express a movie or the like by emphasizing the effects of rain, wind, and the like as the DVD player 10 is driven. .

Looking at the detailed configuration of the server woofer 20 with reference to the accompanying FIG. 3 in the overall home theater configuration, the server woofer 20 has a built-in active power amplifier capable of wireless communication. Reference numeral 22 denotes an input unit, which is composed of two optical input terminals, two coaxial input terminals, and one analog input terminal which can be connected to the display device or DVD player 10, and 24 denotes the center. A speaker connection portion that can be connected to the speaker 30 and a pair of the speaker speaker 40 by wires is shown.

Reference numeral 26 is a first control unit, which checks a connection state of the input unit 22 and the speaker connection unit 24, controls the overall operation of the server woofer 20, and 28 denotes the surround speaker 50. Is implemented in a 2.4 GHz ISM band RF method for wireless communication with the control unit by the first control unit 26 in response to the driving of the display apparatus or the DVD player 10 to wirelessly transmit the corresponding sound to the surround speaker 50. Represents a first transmitter to transmit.

Referring to the configuration and operation of the surround speaker 50 with reference to Figure 4, reference numeral 51 is an FM radio function unit, which is configured inside the surround speaker 50 and the RF of the 2.4GHz ISM band A separate FM radio signal is received, and 53 denotes a receiver capable of wirelessly receiving an audio signal transmitted from the first transmitter of the server woofer 20 by the RF method.

Reference numeral 55 denotes a D / A converter, which converts the digital sound signal received by the receiver 53 into an analog signal for transmitting sound through the transmitter of the surround speaker 50. 2 shows a second control unit which checks the states of the FM radio function unit 51, the receiver 53, and the D / A converter 55 and controls the overall operation of the surround speaker 50.

Reference numeral 59 denotes an amplifier, which transmits an analog signal changed in the D / A converter 55 or a radio sound signal received by the FM radio function unit 51 according to the control signal of the second controller 57. Amplify the sound signal for transmission to (not shown).

As an embodiment of the configuration, the interface device 70 of FIG. 5 is implemented in the RF method of the 2.4GHz ISM band for wireless communication as described above, and the multimedia device 60 such as PC, MP3P, CDP and the like. Interface device for wirelessly transmitting the power or sound signal of the multimedia device 60 to the receiver 53 of the surround speaker 50 is further included, referring to the accompanying FIG. 6 of the interface device 70 Referring to the detailed configuration, reference numeral 72 is an analog / USB input unit, and is configured as a USB type or a connection jack type so that the interface device 70 and the multimedia device 60 such as PC, MP3P, CDP are connected, and 74 is the above. Depending on the connection state or connection of the analog input unit 72, it is possible to check whether the multimedia device receives power and sound signals, or control the overall operation of the interface device 70. The third control unit represents a second transmission unit, and the reference numeral 76 represents a second transmission unit. The surround speaker transmits the sound signal transmitted according to the driving of the multimedia apparatus 60 according to the control signal of the third control unit 74 through wireless communication. Performs a function of wireless transmission to the receiving unit 53 of 50.

Referring to the operation of the audio signal output device of the home theater system according to the present invention having the configuration as described above are as follows.

First, a connection state with the input device 10 through the input unit 22 of the server woofer 20 and the center speaker 30 and the server woofer through the speaker connection unit 24 for driving the home theater system. Check the connection state of the 20 and the front speaker 40 using a cable, and check the connection state of the server woofer 20 and the surround speaker 50 by wireless.

Subsequently, the first control unit 26 of the server woofer 20 is connected to the center speaker 30 and the front speaker 40 via the speaker connection unit 24 according to the driving of the DVD player configured in the input device 10. ) And the surround speaker 50, and the speaker 30, 40, 50 transmits the corresponding sound signal.

In this case, the surround speaker 50 transmits the sound signal transmitted from the first transmitter 28 of the server woofer 20 to the receiver by using wireless communication configured in an RF scheme of 2.4 GHz ISM band for wireless communication. In response to the control signal of the second control unit 57 received by the second control unit 53, the digital sound signal is converted into an analog signal through the D / A converter 55 and the analog signal converted by the amplifying unit 59. To amplify the sound to be transmitted through a transmitting unit (not shown).

If the FM radio sound signal is received through the FM radio function unit 51, the second control unit 57 amplifies through the amplifying unit 59 as described above and voices through a transmitting unit (not shown). Send it out.

On the other hand, in the above configuration, the sound signal received by the receiver 53 of the surround speaker 50 is not a signal transmitted from the first transmitter 28 of the server woofer 20, as an embodiment of the present invention. If it is introduced through the multimedia device 60, such as PC, MP3P, CDP connected to the interface device 70 implemented in the RF scheme of the 2.4GHz ISM band for wireless communication, that is, the analog input unit of the interface device 70 When connected to the multimedia device 60, such as PC, MP3P, CDP in the USB type or the connection jack type through the 72, and transmitted through the sound source and sound signal of the multimedia device 60 and the analog input unit 72, the third The controller 74 controls the sound source or sound signal transmission to the second transmitter 76 by using wireless communication.

The second transmitter 76 receives a sound source or a sound signal of the multimedia apparatus 60 through wireless communication to the receiver 53 of the surround speaker 50 in response to a control signal of the third controller 74. Then, the sound is sent to a transmitter (not shown) according to the driving procedure of the surround speaker 50.

The sound source received through the wireless communication section is amplified by the speaker by the driving of the Digital Class-D Amplifier in the receiver 53 is delivered as sound.

Therefore, in the present invention, a 2 in 1 function, that is, 5.1-channel wireless or 3.1-channel (wired) and 2-channel (wireless) speakers are formed.

That is, when there is no content of 5. 1 channel, a new function of the interface device is provided to the surround speaker 50, which has not been found for use, and thus the surround speaker 50 may be variously changed and the frequency of use may be maximized.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

1 is an exemplary view showing a configuration of a general home theater system

2 is a block diagram showing the configuration of a home theater system according to the present invention.

3 is a block diagram showing the configuration of a server woofer according to FIG.

4 is a block diagram illustrating a configuration of a surround speaker according to FIG. 2.

5 is a block diagram illustrating a configuration of an interface device of a home theater system according to an embodiment of the present invention.

6 is a block diagram illustrating an internal configuration of an interface device according to FIG. 5.

<Description of main parts of drawing>

10: input device 20: server woofer

22: input unit 24: speaker connection

26: first control unit 28: first transmission unit

30: center speaker 40: front speaker

50: surround 51: with FM radio function

53: Receiver 55: D / A Convert

57: second control unit 59: amplifying unit

60: multimedia device 70: interface device

72: analog input unit 74: third control unit

76: second transmission unit

Claims (6)

delete A large screen digital display device for reproducing normal images such as a projector, projection, PDP, LCD, etc., a DVD player with built-in amplifier function supporting basic 5.1 channels, DTS, Dolby, etc., a power amplifier, and the display device A server woofer equipped with a wireless TX board and an active power amplifier capable of wireless communication in order to output only the low end of sound connected to the DVD player, a wired connection with the server woofer, and the sound effect according to the operation of the DVD player. A center speaker for transmitting background music, and a pair of front speakers connected in a wired manner to the server woofer and located on the front wall side of the living room, and three-dimensionally transmitting dialogue and background music while supporting the center speaker according to the DVD player driving. And driven by wireless communication with the server woofer and driven by the DVD player. A pair of surround speakers for emphasizing excessive sound, an input unit comprising two optical input terminals, two coaxial input terminals, and one analog input terminal that can be connected to the display device or a DVD player, and the center speaker, a pair of A speaker connection unit which can be connected to a speaker speaker by wire, a first control unit which checks a connection state of the input unit and the speaker connection unit, and controls the overall operation of the server woofer, and 2.4 GHz for wireless communication with the surround speaker An audio signal output device of a home theater system, which is implemented by an ISM band RF method and comprises a first transmitter configured to wirelessly transmit a corresponding sound to the surround speaker in response to a control signal of the first controller according to the driving of the display device or the DVD player. In The surround speaker includes an FM radio function unit capable of receiving an FM radio signal separately from the RF method of the 2.4 GHz ISM band; A receiving unit capable of wirelessly receiving an acoustic signal transmitted from the first transmitting unit of the server woofer by the RF method; A D / A converter for converting the digital sound signal received by the receiver into an analog signal for transmitting sound through a transmitter of a surround speaker; A second control unit which checks the states of the FM radio function unit, the reception unit and the D / A converter, and controls the overall operation of the surround speaker; And an amplifier for amplifying the sound signal in order to send the analog signal changed in the D / A converter or the radio sound signal received in the FM radio function unit to the transmitter according to the control signal of the second controller. Audio signal output device of a home theater system. The method of claim 2, It is implemented in the RF method of 2.4GHz ISM band for wireless communication, and connected to a multimedia device such as PC, MP3P, CDP further includes an interface device for wirelessly transmitting the power or sound signal of the multimedia device to the receiver of the surround speaker Audio signal output device of a home theater system, characterized in that configured to. The method of claim 3, wherein The interface device may include a USB type or a jack type analog input unit connected to a multimedia device such as a PC, MP3P, or CDP. A third control unit which checks whether the power and sound signals of the multimedia apparatus are received or controls the overall operation of the interface device according to the connection state or connection of the analog input unit; And a second transmitter configured to wirelessly transmit a sound signal transmitted according to the driving of the multimedia apparatus to the receiver of the surround speaker through wireless communication according to the control signal of the third controller. Audio signal output device. delete delete

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