KR20060114189A - Device and method for controlling sound mode of hometheater system - Google Patents

Abstract

An apparatus for controlling an acoustic mode of a home theater system and a method therefor are provided to enhance the convenience of a user by allowing an audio decoder to automatically convert the current mode into a predetermined acoustic mode corresponding to a TV broadcasting mode or a radio FM broadcasting mode and output an audio signal of the converted acoustic mode. An ADC(Analog to Digital Converter)(16) converts an audio signal of a tuned TV or radio broadcasting channel into a digital audio signal. A DVD(Digital Video Disc) decoder/encoder(18a) converts the digital audio signal converted in the ADC(16) from a predetermined acoustic mode of a home theater system to an acoustic mode corresponding to the tuned TV or radio broadcasting mode. An amplifying unit(30) amplifies an audio signal of the acoustic mode transmitted from the DVD decoder/encoder(18a) at a predetermined audio output level, and outputs the amplified audio signal through a multi-channel speaker(32). A microcomputer(20) transmits a switching signal for automatically converting the audio signal of the corresponding broadcasting into the acoustic mode corresponding to the tuned TV or radio broadcasting mode to the DVD decoder/encoder(18a) in response to a TV or radio broadcasting channel key.

Description

DEVICE AND METHOD FOR CONTROLLING SOUND MODE OF HOMETHEATER SYSTEM}

1 is a configuration diagram briefly showing an acoustic mode control apparatus of a home theater system according to the present invention;

2 is a view showing that the sound mode output for each broadcast mode is changed in the home theater system according to the present invention;

Figure 3 is a flow chart briefly showing a sound mode control method of a home theater system according to the present invention.

<Description of the code | symbol about the principal part of drawing>

10: TV Tuner 12: Radio Tuner

14, 26: audio signal processor 16: ADC

18: DVD part 20: microcomputer

22: key input 24: VCR deck

28: audio output unit 30: amplification unit

32: Speaker

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home theater system, and more particularly, to an apparatus and method for controlling an acoustic mode of a home theater system for automatically setting and outputting a sound mode of a home theater system according to a corresponding broadcast mode when receiving a TV broadcast or a radio FM broadcast. will be.

Home theater system means moving the theater's video system and sound system home. In other words, the home theater system is composed of a video device and an audio device so that the user can feel the three-dimensional and grand sound of a movie theater at home. For example, the video equipment constituting the home theater system includes, for example, a television and a screen. The audio equipment includes 5.1-channel multi-channel speakers, an audio receiver, and the like. The device is connected.

However, the home theater system according to the related art is switched to the sound mode set in the system regardless of the mono or stereo mode of the broadcast when the TV broadcast or the radio FM broadcast is received. For example, the sound mode of a home theater system is stereo, studio, stadium, club, church, hall, and music (output through multichannel speakers). music, movies, matrices, and the like.

However, the home theater system set to any sound mode automatically outputs the tuned TV or radio FM broadcast by converting the audio signal of TV or radio FM broadcast to the audio signal of the sound mode set by the system. Could not listen in sound mode for. That is, the user could not listen to the audio signal of the acoustic mode suitable for the tuned broadcast mode without forcing the user to switch the acoustic mode of the home theater system to the tuned TV or radio FM broadcast mode.

An object of the present invention is to solve the above problems of the prior art, by automatically switching to a predetermined sound mode corresponding to the TV broadcast or radio FM broadcast mode in the audio decoder to output the audio signal of the switched sound mode An object of the present invention is to provide a sound mode control apparatus of a home theater system.

Another object of the present invention is a home theater system that can improve user convenience by automatically switching to a preset sound mode corresponding to a corresponding broadcast mode and outputting an audio signal of a switched sound mode when receiving a TV broadcast or a radio FM broadcast. To provide a sound mode control method of the.

In order to achieve the above object, the present invention provides a device for controlling an acoustic mode of an audio signal through a multi-channel speaker in a home theater system, the ADC converting an audio signal of a tuned TV broadcast channel or a radio broadcast channel into a digital audio signal. And a decoder for converting the digital audio signal converted by the ADC from a preset sound mode of the system to a sound mode corresponding to the tuned TV broadcast or radio broadcast mode, and a preset audio output of the audio signal of the sound mode transmitted from the decoder. After amplifying to a level and outputting through a multi-channel speaker, and an audio mode corresponding to the TV broadcast or radio broadcast mode tuned to the decoder in response to the TV broadcast or radio broadcast channel key, the audio signal of the corresponding broadcast is automatically It includes a microcomputer for delivering a switching signal for conversion.

According to an aspect of the present invention, there is provided a method of controlling a sound mode of an audio signal through a multi-channel speaker in a home theater system, the method comprising: tuning a corresponding broadcast channel in response to a TV broadcast or radio broadcast channel key; Converting an audio signal of a tuned TV broadcast channel or a radio broadcast channel into a digital audio signal, determining a broadcast mode corresponding to the converted digital audio signal, and tuning a preset sound mode of the system according to the determination result And converting the sound mode corresponding to the broadcast mode of the TV broadcast channel or the radio broadcast channel, and outputting the converted audio signal through the multi-channel speaker.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1 is a configuration diagram briefly showing an acoustic mode control apparatus of a home theater system according to the present invention.

Referring to FIG. 1, an example of an acoustic mode control apparatus of a home theater system according to the present invention includes a TV tuner 10, a radio tuner 12, an audio signal processor 14, 26, and an analog to digital converter (ADC). 16), DVD portion 18, microcomputer 20, key input 22, VCR deck 24, audio output 28, amplifier 30, multi-channel speaker 32 and the like. do. Here, components that process the video signal of the home theater system are omitted for simplicity.

The TV tuner 10 tunes any one TV broadcast channel among a plurality of TV broadcast program channels received through an antenna (not shown) and transmits it to the audio signal processor 14. In addition, the radio tuner 12 tunes any one radio broadcast (FM) channel among a plurality of radio broadcast channels received through an antenna (not shown) and transmits the same to the audio signal processor 14.

The audio signal processor 14 processes an audio signal from a broadcast channel tuned by the TV tuner 10 or the radio tuner 12, and transmits the audio signal to the ADC 16, the audio output unit 28, or the amplifier 30. do.

The ADC 16 converts the analog audio signal signaled by the audio signal processor 14 into a digital audio signal and delivers it to the DVD portion 18.

The DVD portion 18 includes a DVD decoder / encoder 18a and a DVD loader 18b. The DVD decoder 18a of the DVD portion 18 converts the digital audio signal converted by the ADC 16 into a sound mode corresponding to the tuned TV broadcast or radio broadcast mode under the control of the microcomputer 20, and amplifies the amplifier. To 30). At this time, the DVD decoder / encoder 18a decompresses the compressed data of the DVD sent from the DVD loader 18b according to the MPEG decompression algorithm, decodes the original audio signal, and decodes the DVD data compressed according to the MPEG compression algorithm. Forward to 18b. The DVD loader 18b reads data recorded on the DVD or writes data to the DVD under the control of the microcomputer 20.

The microcomputer 20 automatically converts the audio signal of the broadcast to the sound mode corresponding to the TV broadcast or radio broadcast mode to the DVD decoder 18a in response to the TV broadcast or radio broadcast channel key input from the key input unit 22. Transfers a switching signal for At this time, the microcomputer 20 controls the VCR deck 24 to record data on the VCR tape of the VCR deck 24 or reproduce the recorded data. Of the data reproduced in the VCR deck 24, the audio signal is signaled by the audio signal processor 26 and then transmitted to the amplifier 30.

The audio output unit 28 transmits the audio signal of the TV broadcast or radio broadcast channel processed by the audio signal processor 14 to the TV through an RCA terminal which is a connection terminal of the TV.

The amplifier 30 amplifies the TV broadcast or radio broadcast audio signal transmitted from the audio signal processing units 14 and 29 to a predetermined audio output level and delivers the same to the multi-channel speaker 32 such as 5.1 channel. The amplifying unit 30 of the present invention amplifies the audio signal of the acoustic mode transmitted from the DVD decoder 18a to a predetermined audio output level and transmits the amplified audio signal to a multi-channel speaker 32 such as 5.1 channel. At this time, the amplifier 30 is composed of a digital amplifier (digital AMP).

The speaker 32 outputs an audio signal transmitted from the amplifier 30. In the present invention, an audio signal of an acoustic mode corresponding to the tuned TV broadcast or radio broadcast mode is output.

2 is a view showing that the sound mode output for each broadcast mode in the home theater system according to the present invention is changed.

Referring to FIG. 2, the apparatus for controlling a sound mode of a home theater system according to the present invention is provided when the TV mono broadcast 40a is received even if the sound mode output through the multi-channel speaker is set to stereo in the home theater system. The audio signal is output by automatically switching to the preset matrix acoustic mode 50a corresponding to the broadcast mode 40a. When the TV stereo broadcast 40b is received, the apparatus of the present invention automatically switches to the preset music sound mode 50b corresponding to the broadcast mode 40b and outputs an audio signal. In addition, when the radio FM broadcast 40c is received, the apparatus of the present invention automatically switches to the preset music sound mode 50c corresponding to the corresponding broadcast mode 40c and outputs an audio signal. In FIG. 2, reference numeral 40 denotes a reception broadcast and 50 denotes a sound mode.

3 is a flowchart schematically illustrating a sound mode control method of a home theater system according to the present invention.

Referring to Figure 3, the sound mode control method of the home theater system according to the present invention proceeds as follows.

First, when an arbitrary TV broadcast channel key or a radio FM broadcast channel key is input from the key input unit 22, the microcomputer 20 selects a corresponding channel key among the broadcast channels tuned through the TV tuner 10 or the radio tuner 12. Control to tune to the broadcast channel corresponding to (S10).

The microcomputer 20 processes the audio signal among the channels tuned by the TV tuner 10 or the radio tuner 12 through the audio signal processor 14 (S12).

In addition, the microcomputer 20 converts the analog audio signal processed through the ADC 16 into a digital audio signal and transmits the digital audio signal to the DVD portion 18 (S14).

The microcomputer 20 determines the broadcast mode of the tuned TV broadcast channel or the radio FM broadcast channel (S16).

When the broadcast mode of the tuned broadcast channel is TV mono, the microcomputer 20 sets a preset sound mode of the home theater system in the DVD decoder 18a of the DVD portion 18 to correspond to the TV mono broadcast mode. A signal for automatically switching to a mode (for example, matrix acoustic mode) is transmitted. (S16) The DVD decoder 18a presets the digital audio signal converted by the ADC 16 under the control of the microcomputer 20. The sound mode is converted into a sound mode (for example, a matrix sound mode) corresponding to the TV mono broadcasting mode and transmitted to the amplifier 30. The amplifying unit 30 amplifies the audio signal of the matrix acoustic mode delivered to the DVD decoder 18a to a predetermined audio output level, and then transfers the audio signal to the multi-channel speaker 32. Then, the speaker 32 outputs an audio signal of a matrix acoustic mode corresponding to the TV mono broadcasting mode transmitted from the amplifier 30 (S18).

As a result of S16, when the broadcast mode of the tuned broadcast channel is TV stereo, the microcomputer 20 transmits the preset sound mode of the home theater system to the DVD decoder 18a of the DVD portion 18 to correspond to the TV stereo broadcast mode. A signal for automatically switching to a mode (for example, a music sound mode) is transmitted. (S20) The DVD decoder 18a presets the digital audio signal converted by the ADC 16 under the control of the microcomputer 20. Instead of the sound mode, a sound mode (for example, a music sound mode) corresponding to the TV mono broadcasting mode is converted to the amplifier 30. The amplifier 30 amplifies the audio signal of the music sound mode delivered to the DVD decoder 18a to a predetermined audio output level and transmits the audio signal to the multi-channel speaker 32. Then, the speaker 32 outputs an audio signal of a matrix acoustic mode corresponding to the TV stereo broadcasting mode transmitted from the amplifier 30 (S22).

When the broadcast mode of the tuned broadcast channel is the radio FM broadcast mode, the microcomputer 20 responds to the radio FM broadcast mode by setting the preset sound mode of the home theater system to the DVD decoder 18a of the DVD portion 18. A signal for automatically switching to a sound mode (for example, a music sound mode) is transmitted (S24). The DVD decoder 18a then converts the digital audio signal converted by the ADC 16 under the control of the microcomputer 20. The preset sound mode is converted into a sound mode corresponding to the radio FM broadcast mode (for example, a music sound mode) and transmitted to the amplifier 30. The amplifier 30 amplifies the audio signal of the music sound mode delivered to the DVD decoder 18a to a predetermined audio output level and transmits the audio signal to the multi-channel speaker 32. Then, the speaker 32 outputs an audio signal of a music sound mode corresponding to the radio FM broadcast mode transmitted from the amplifier 30. (S26)

As described above, when the home theater system receives a TV broadcast or a radio FM broadcast, the present invention automatically switches the audio signal of the tuned broadcast to the switched sound mode by automatically switching to a preset sound mode corresponding to the tuned broadcast mode. By outputting, the user can change the sound mode set in the system according to the broadcasting mode, eliminating the inconvenience of improving the user's convenience.

On the other hand, the present invention is not limited to the above-described embodiment, various modifications are possible by those skilled in the art within the spirit and scope of the present invention described in the claims to be described later.

Claims (8)

An apparatus for controlling a sound mode of an audio signal through a multi-channel speaker in a home theater system, An ADC that converts the audio signal of the tuned TV or radio broadcast channel into a digital audio signal; A decoder for converting the digital audio signal converted by the ADC from a preset sound mode of the system to a sound mode corresponding to the tuned TV broadcast or radio broadcast mode; An amplifier for amplifying the audio signal of the acoustic mode transmitted from the decoder to a predetermined audio output level and then outputting the audio signal through the multi-channel speaker; A microcomputer that transfers a switching signal for automatically converting an audio signal of a corresponding broadcast to a sound mode corresponding to the tuned TV broadcast or radio broadcast mode to the decoder in response to the TV broadcast or radio broadcast channel key. Sound mode control device of a home theater system comprising a. The method of claim 1, And the decoder converts the sound mode into a matrix sound mode when the TV broadcast mode is monaural. The method of claim 1, And the decoder converts the sound mode to a music sound mode when the TV broadcast mode is stereo. The method of claim 1, And the decoder converts the sound mode to a music sound mode when the radio broadcast mode is FM. In the home theater system to control the sound mode of the audio signal through the multi-channel speaker, Tuning the broadcast channel in response to a TV broadcast or radio broadcast channel key; Converting an audio signal of the tuned TV broadcast channel or radio broadcast channel into a digital audio signal; Determining a broadcast mode corresponding to the converted digital audio signal; Converting a preset sound mode of the system into a sound mode corresponding to a broadcast mode of the tuned TV broadcast channel or a radio broadcast channel according to the determination result; Outputting the converted audio mode audio signal through the multi-channel speaker Sound mode control method of a home theater system comprising a. The method of claim 5, And the sound mode is converted to a matrix sound mode when the tuned TV broadcast mode is monaural. The method of claim 5, And the sound mode is converted into a music sound mode when the tuned TV broadcast mode is stereo. The method of claim 5, If the tuned radio broadcast mode is FM, the sound mode control method of the home theater system, characterized in that for converting the sound mode to a music sound mode.

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