KR20070122277A - Video image diplay apparatus having the volume sensing means and method for controlling volume automatically thereof - Google Patents

Abstract

A video display device having a volume sensor and a method for automatically adjusting volume are provided to adjust a voice by comparing a reference level, set by a user according to each mode/speaker, with voice signal intensity sensed by plural voice sensors, thereby transmitting an optimum voice signal that a user wants. A setup memory(140) by mode/speaker stores a reference level set by a user according to modes or speakers. At least one voice sensor(160) senses a voice outputted from the speaker(150). A controller(110) is connected to the voice sensor to exchange signals, compares the sensed voice signal intensity with the reference level set to the setup memory by mode/speaker, and transmits a voice adjustment signal if the sensed voice signal intensity is weaker than the reference level. A voice adjuster(122) adjusts the sensed voice signal according to a control signal of the controller and outputs the adjusted voice signal.

Description

Image display apparatus having a volume sensing means and a method for automatically adjusting the volume thereof {Video image diplay apparatus having the volume sensing means and Method for controlling volume automatically dialogue}

1 is a block diagram of an image display apparatus having a volume detecting means according to an embodiment of the present invention;

FIG. 2 is a schematic plan view of an image display apparatus equipped with the volume detecting means of FIG. 1;

3 is a flowchart illustrating a method for automatically adjusting the volume of an image display device according to an exemplary embodiment of the present invention.

<Description of Major Symbols in Drawing>

110. Control unit 111. A / C converter

112. Comparator 113. Interface

120. Tuner 130. Video / Audio Signal Processor

140. Setting memory for each mode / speaker 160. Voice detection means

The present invention relates to an image display device having a volume detection means and a volume automatic adjustment method of the image display device, and more particularly, to detect a voice signal output from the image display device using a plurality of voice detection means and The present invention relates to an image display device equipped with a volume sensing means for comparing with a set value and following-tracking control, and a method for automatically adjusting the volume of the image display device.

Recently, the trend of viewers wanting to be provided with higher sound quality is getting stronger. This is especially true due to the increasing trend in digital cable and digital satellite broadcast reception in addition to terrestrial broadcasts, as well as the introduction of stereo and Dolby systems for DVD and video viewing.

However, the signal levels of terrestrial television audio signals, digital satellite audio signals, DVD playback audio signals, and video audio playback signals accepted by a video display device are the terrestrial TV broadcasting program makers, digital satellite program makers, and DVD production companies. And the video tape production company. Therefore, the volume and the sound quality are different for each mode or frequency, so the inconvenience of having to always change to the level desired by the user. In addition, in the case of the image display apparatus to which the Dolby system is applied, the set volume and sound quality are different according to the surrounding environment of the home where the image display apparatus is installed, so that the inconvenience is greater in order to change the desired level.

On the other hand, the image display device is set so that the user can manually adjust the volume for each mode. In other words, it can be divided into user mode, cinema mode, and news mode. However, the voice processing method merely transmits the sound through the speaker according to the volume level set by the viewer in the voice signal processing unit. Inappropriate.

The present invention has been made in view of the above, the present invention is to detect a voice signal output from the video display device using a plurality of voice detection means according to the surrounding environment in which the video display device is installed and set the value and An object of the present invention is to provide an image display device equipped with a volume detection means for comparing and following control and a method for automatically adjusting the volume of the image display device.

In accordance with an aspect of the present invention, there is provided a video display device including a volume sensing means, each mode / speaker-specific setting memory for storing a reference level set by a user for each mode or speaker; At least one voice detecting means for detecting a voice output from the speaker; It is connected to the voice detection means so as to exchange signals, and compares the detected voice signal strength with a reference level set in the mode / speaker setting memory, and when the detected voice signal strength is equal to or less than the reference level, a voice adjustment signal. Control unit for transmitting the; And a voice controller adjusting and outputting the detected voice signal according to the control signal of the controller.

In addition, the speaker includes a front right speaker, a front center speaker and a front left speaker of the television main body, and a rear right speaker and a rear left speaker spaced a predetermined distance from the television main body, and the voice sensing means is installed in the front right speaker. A first voice sensing means, a second voice sensing means installed in the front center speaker, a third voice sensing means installed in the front left speaker, a fourth voice sensing means installed in the rear right speaker and the rear left speaker It is preferable to include a fifth voice sensing means to be installed.

In addition, it is preferable that the fourth and fifth voice sensing means exchange signals with the control unit by a wireless communication method.

In addition, the voice sensing means includes a sixth voice sensing means installed in the rear center portion of the television main body, and at least a part of the sixth voice sensing means is exposed to the outside of the television main body.

The control unit may include an A / D converter for converting an analog signal sensed by the voice sensing means into a digital signal, and a reference level set in the mode / speaker setting memory for converting the digital signal converted by the A / D converter. It is preferable to include a comparison unit to compare with.

On the other hand, the automatic volume control method of the image display apparatus according to the present invention for achieving the above object, in the automatic volume control method of the image display device having at least one voice sensing means, the reference level for each mode / speaker Setting up; Detecting a voice signal by the voice sensing means; Comparing the intensity of the detection signal with the set reference level; Controlling the voice adjusting unit when the intensity of the detection signal is equal to or less than the reference level; And outputting voice by filtering high and low frequency portions of the voice signal according to the control signal.

The above objects, features and other advantages of the present invention will become more apparent by describing the preferred embodiments of the present invention in detail with reference to the accompanying drawings. Hereinafter, an image display apparatus equipped with a volume sensing means and a method for automatically adjusting the volume of an image display apparatus will be described with reference to the accompanying drawings.

1 is a block diagram of a digital television receiver as an example of an image display apparatus according to an embodiment of the present invention.

The control unit 110 according to various commands input by the user from the key input unit 121 to the selecting means, the volume indicating means, and the moving indicating means in accordance with various programs previously stored in the internal memory (not shown) and various images and Output audio signal to watch. The key input unit 121 includes a remote control receiver to which a signal is input by an external remote controller.

That is, when the television is operated in accordance with the television command input through the key input unit 121, the controller 110 sets the terrestrial program viewing mode for watching a broadcast program for terrestrial television broadcasting, and sets an antenna through an antenna (not shown). The tuner 120 receives the received analog terrestrial television broadcast signal for multiple terrestrial television broadcasting.

The tuner 120 selects a terrestrial television broadcast signal of a channel selected by the user among the terrestrial television broadcast signals for a plurality of channels, and transmits it to the video / audio signal processor 130.

The video / audio signal processor 130 performs predetermined processing on the terrestrial television broadcast signal to separate the video signal and the audio signal, and transmits the video signal to the video synthesizing unit 131 through the control unit 110 and controls the audio signal. The voice controller 122 transmits the voice control unit 122 to the main amplifier 123. The image synthesizing unit 131 and the audio adjusting unit 122 process the video signal and the audio signal, respectively, and output them to the display unit 132 and the speaker 150.

On the other hand, the controller 110 is connected to the interface 113 so that the signal exchange. The interface 113 is provided with a plurality of external input terminals (not shown), and the external input terminals are, for example, digital satellite broadcast or cable broadcast receivers (hereinafter referred to as "digital broadcast receivers") as external devices. 114, the DVD player 115, the video player 116, and the like are connected.

Therefore, when the digital broadcast selection command, the DVD selection command, and the video selection command are respectively input by the user, the controller 110 switches to the digital satellite broadcast viewing mode, the DVD playback viewing mode, and the video playback viewing mode, respectively.

In addition, the controller 110 controls each of the digital broadcast video / audio signal, the DVD play video / audio signal, and the video play video / audio signal supplied through the interface 113, respectively, to the image synthesizer 131 and the audio. It sends out through the adjustment part 122.

On the other hand, as described above, the signal levels of the terrestrial television's audio signal, the digital satellite broadcast audio signal, the DVD playback audio signal, and the video playback audio signal, which are accepted by the television receiver, are for the production of terrestrial television broadcasting programs or the production of digital satellite programs. Each company, a DVD production company, a video production company, etc., are arbitrarily set.

In the mode-specific / speaker-specific setting memory 140, the user sets the strength of the audio signal set for each terrestrial viewing mode, digital broadcasting viewing mode, DVD playback viewing mode, video playback viewing mode, and speaker.

The user stores the optimal voice signal for each mode / speaker in advance.

The television according to the embodiment of the present invention is applied to a 5.1 channel or 6.1 channel Dolby system. Accordingly, the television of the present invention is provided with five or six speakers, respectively, referring to FIG. 2, the front right speaker 151 and the front center speaker 152 installed at the front, center, and left of the television main body 101. ) And the front left speaker 153. The rear right speaker 154 and the rear left speaker 155 are separated from the television main body 101 by a predetermined distance.

Meanwhile, the voice sensing unit 160 detects the voice output from the speaker 150 and transmits the detected voice signal to the control unit 110 so as to be interchangeable with the control unit 110. According to an embodiment of the present invention, the voice sensing means 160 is preferably installed in each speaker 150. On the other hand, according to the present invention is not necessarily limited to this, since the voice is output from the speaker 150, the voice can be detected best, and also cost-effective. The voice sensing means 160 is provided to the first voice sensing means 161 installed on the front right speaker 151, the second voice sensing means 162 installed on the front center speaker 152, and the front left speaker 153. The third voice sensing means 163 is installed, the fourth voice sensing means 164 is installed at the rear right speaker 154 and the fifth voice sensing means 165 is installed at the rear left speaker 155. The first, second and third voice sensing means 163 are respectively installed inside the television main body 101 and connected to the control unit 110 so as to be able to exchange signals by wire, but the fourth and fifth voice sensing means 165 are provided. ) Is preferably exchanged with the controller 110 by a wireless communication method such as a Bluetooth method.

In addition, the voice sensing means 160 preferably includes a sixth voice sensing means 166 provided at the rear center portion of the television main body 101. Since the received volume level is lower than the front side of the television main body 101, at least a part of the sixth voice sensing means 166 is preferably installed to be exposed to the outside of the rear side of the television main body 101 as shown. Do.

The controller 110 controls the intensity of the voice signal received from the first voice sensing means 161 to the sixth voice sensing means 166 and for each mode / speaker stored in the setting memory 140 for each mode / speaker. Compared to the reference level of the voice signal, and if the detected voice signal strength is less than the set reference level, the voice control signal is sent to the voice controller 122.

To this end, the controller 110 includes an A / D converter 111 for converting an analog signal detected by the voice sensing means into a digital signal, and a comparison unit 112 for comparing the detected and converted digital signal with the reference level. It includes.

Accordingly, according to the present invention, by adjusting the voice by comparing the reference signal level set by the user for each mode / speaker with the voice signal strength detected by the plurality of voice sensing means, the user can transmit the optimum voice signal desired by the user. Will be.

Hereinafter, an image display device having the above configuration and a method for automatically adjusting the volume thereof will be described with reference to FIG. 3.

First, the user sets the reference level for each mode / speaker (S210). In other words, the user grasps and outputs the audio output from the plurality of speakers 151 to 155 in the terrestrial viewing mode, the digital satellite broadcasting viewing mode, the DVD playback viewing mode, and the video playback viewing mode, respectively, to set the audio signal.

The reference level for each mode / speaker set by the user is stored in the setting memory 140 for each mode / speaker.

On the other hand, when a voice signal is output for each mode by the user's selection, the plurality of voice sensing means 160 detects the voice signal (S220), and transmits the detected voice signal to the controller 110.

The controller 110 compares the intensity of the detected voice signal with a reference level stored in the setting memory 140 for each mode / speaker (S230). That is, when the DVD playback mode is set by the user, the controller 110 compares the audio signal sensed by the voice sensing means 160 with reference levels for each speaker set in the DVD playback mode.

Thereafter, if the detected signal intensity is less than or equal to the reference level, the controller 110 controls the signal controlling the voice adjuster 122 to compensate for this, and the voice adjuster 122 controls the high and low frequency portions of the voice signal. The voice is filtered to adjust (S250).

In addition, the controller 110 compares the adjusted voice value with the reference level again (S260), and adjusts the voice again when the reference level is lower than the reference level, and outputs the voice signal when the reference level is higher than the reference level.

As described above, according to the video display device equipped with the voice sensing means and the automatic volume control method of the video display apparatus, the voice output from the speaker of the video display apparatus is detected using a plurality of voice sensing means. The present invention relates to an image display device equipped with a volume sensing means for comparing the control with a set value and to follow-up control, and a method for automatically adjusting the volume of the image display device.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described specific embodiments. That is, those skilled in the art to which the present invention pertains can make many changes and modifications to the present invention without departing from the spirit and scope of the appended claims, and all such appropriate changes and modifications are possible. Equivalents should be considered to be within the scope of the present invention.

Claims (6)

An image display device comprising a speaker, A setting memory for each mode / speaker for storing the reference level set by the user for each mode or speaker; At least one voice detecting means for detecting a voice output from the speaker; It is connected to the voice detection means so as to exchange signals, and compares the detected voice signal strength with a reference level set in the mode / speaker setting memory, and when the detected voice signal strength is equal to or less than the reference level, a voice adjustment signal. Control unit for transmitting the; And, And a voice adjusting unit for adjusting and outputting the detected voice signal according to the control signal of the controller. The method of claim 1, The speaker includes a front right speaker, a front center speaker and a front left speaker of the television main body, a rear right speaker and a rear left speaker a predetermined distance from the television main body, The voice sensing means is installed on the first voice sensing means installed on the front right speaker, the second voice sensing means installed on the front center speaker, the third voice sensing means installed on the front left speaker, and the rear right speaker. And a fourth voice sensing means installed on the rear left speaker. The method of claim 2, And the fourth and fifth voice sensing means exchange signals with the controller by a wireless communication method. The method of claim 2, The voice sensing means includes a sixth voice sensing means installed in the rear center portion of the television main body, and at least a part of the six voice sensing means is exposed to the outside of the television main body. Video display device. The method of claim 1, wherein the control unit, A / D converter for converting the analog signal sensed by the voice sensing means into a digital signal, and comparing the digital signal converted by the A / D converter with a reference level set in the setting memory for each mode / speaker Image display device having a sound detection means, characterized in that it comprises a unit. In the method for automatically adjusting the volume of the video display device having at least one voice sensing means, Setting a reference level for each mode / speaker; Detecting a voice signal by the voice sensing means; Comparing the intensity of the detection signal with the set reference level; Controlling the voice adjusting unit when the intensity of the detection signal is equal to or less than the reference level; And, And outputting audio by filtering high and low frequency portions of the audio signal according to the control signal.

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