KR20080001364A - Apparatus for adjusting sound effect of television and method thereof - Google Patents

Abstract

An apparatus and a method for adjusting sound effects in a television are provided to detect a motion amount and color distribution of a broadcasted screen, and automatically adjust a sound effect mode according to contents of broadcasting, thereby improving realism of the broadcasting by using the sound effects suitable for the broadcasting contents without inconvenience that a user manually selects the mode. A motion amount detector(21) detects a motion amount of a current video frame and a previous video frame stored in a video information storage(15). A color distribution detector(22) detects the color distribution of the current video frame stored in the video information storage. A sound effect mode storage(24) stores corresponding sound effect modes according to the motion amount and color distribution. A sound effect mode selecting unit(23) selects a sound effect mode in the sound effect mode storage based on the motion amount and color distribution values, detected by the motion amount detector and color distribution detector, and transmits the selected mode to a microprocessor(9) to generate sound effects.

Description

Acoustic effect adjusting device and method of television {APPARATUS FOR ADJUSTING SOUND EFFECT OF TELEVISION AND METHOD THEREOF}

1 is a block diagram showing the configuration of a general digital television.

2 is a block diagram showing the configuration of a television including a sound effect adjusting apparatus according to an embodiment of the present invention.

3 is a flowchart illustrating a sound effect adjusting method of a television according to an embodiment of the present invention.

   -Explanation of symbols for the main parts of the drawings-

1: antenna 2: tuner

3: IF amplification unit 4: P / S separation unit

5: voice detector 6: image detector

7: remote control unit 8: receiving unit

9 microprocessor 10 voice processing unit

11: voice amplifier 12: speaker

13: A / D converter 14: Image information management unit

15: image information storage unit 16: digital image adjustment unit

17: image processing unit 18: D / A converter

19: CRT drive unit 20: CRT

21: motion detection unit 22: color distribution detection unit

23: sound mode selection unit 24: sound mode storage unit

The present invention relates to a sound effect adjusting apparatus and a method of a television, and more particularly, a user's manual selection by detecting a motion amount and a color distribution of a broadcast screen and automatically adjusting a sound mode according to broadcast contents. The present invention relates to a sound effect control apparatus and a method for adjusting a television to enhance the realism and realism of a broadcast with sound effects suitable for broadcast contents.

The digitalization of information spread from the computer industry to the information and communication industry has recently been extended to television broadcast signals. Digitization of television broadcast signals will realize a two-way multimedia era in which a new paradigm that is fused with technology in the computer and communication fields is realized.

As digital broadcasting technology continues to be commercialized, DTV broadcasting air waves are transmitted to the home, and digital broadcasting receivers are diversifying, including integrated sets and separate set-tops.

Digital TV differs from conventional analog broadcasting in that there are numerous progress in channel coding and various additional services. However, in terms of AV, which is the ultimate goal of TV, expanded audio channels and high-definition video quality can be seen.

In particular, HD (High Definition) class digital programs realize high quality image reproducibility of about 5 times the resolution.

The set top for digital TV reception outputs various video signal formats such as high definition (HD) components, standard definition (SD) components, and existing analog composite video signals.

In the video output format, HD class mainly supports two color coordinate systems, YPbPr component signal with sync component Y and RGB Hsync / Vsync with horizontal vertical sync component separated, and two output resolutions of HD 1080i and HD 720p. Support.

In addition, down conversion to 480p and 480i, corresponding to the existing SD class, maintains compatibility with currently available displays.

In addition, in terms of sound quality, conventional analog TVs provide only two channels of stereo sound, while digital TVs using AC3 technology provide 5.1-channel stereo sound that can be enjoyed in a theater.

In contrast to the aspect ratio of the conventional analog TV is 4: 3, digital TV is based on a widescreen 16: 9 aspect ratio, the same as the theater screen.

On the other hand, what distinguishes digital TV from analog TV is not only a dramatic change in quality and sound quality. Digital TVs are data compatible with serial interfaces implemented via IEEE 1394 interface technology, such as digital versatile disc (DVD) players, digital camcorders, and digital VCRs that process digital signals as well as PCs.

Therefore, digitalization of broadcast signal will accelerate the convergence of communication, computer, and broadcasting due to the spread of media using the compressor method, and will be internationalized and multi-channel as a single media with complex functions. Above all, introducing a digital system to a broadcast signal can provide various data services that could not be realized in analog. In addition, the digitization of the broadcast signal may be performed by multiplexing and transmitting information in the vertical retrace period of the TV video signal or by using a separate channel, such as character information, image information, product information, and broadcast program information for a television or computer owner (aka electronic). Data broadcasting, which is a new media service providing multimedia information such as an electronic program guide (EPG), may be implemented.

1 is a block diagram showing the configuration of a general digital television.

As shown here, the tuner 2 generates and outputs a predetermined intermediate frequency signal from the broadcast signal received through the antenna 1, and the IF amplifier unit amplifies the intermediate frequency signal output through the tuner 2 ( 3) and a P / S separation unit 4 which separates the video intermediate frequency signal PIF and the audio intermediate frequency signal SIF from the broadcasting intermediate frequency signal output from the IF amplifier 3, for example, a surface acoustic wave filter. Is made of.

Then, the microprocessor 9 for the voice detector 5 for detecting the voice signal from the voice intermediate frequency signal output from the P / S separation unit 4, and the voice signal output from the voice detector 5 According to the control signal from the voice processor 10 for performing voice processing such as bass, treble, volume, etc., and amplified voice signals processed by the voice processor 10, the speaker 12 It consists of a voice amplifier 11 for outputting.

Also, the video detector 6 detects a video signal from the video intermediate frequency signal output from the P / S separation unit 4, and converts the analog video signal output from the video detector 6 into a digital video signal. A control signal of the microprocessor 9 for the analog / digital converter 13 to output, the video information storage unit 15 for storing the digital video signal, and the digital video signal output from the analog / digital converter 13. The digital image output through the image information management unit 14 and the image information management unit 14 for sequentially storing the image information storage unit 15 in a predetermined unit based on the control signal of the microprocessor 9 A digital image adjusting unit 16 for processing a still image function or a zooming function with respect to a video signal stored in the signal or the image information storing unit 15, and outputted from the digital image adjusting unit 16. Color, Tint, Brightness, etc. are processed according to the control signal from the microprocessor 9 with respect to the digital video signal, and corresponding R (Red), G (Green), and B (Blue) are processed. ) And an image processor 17 for generating and outputting a luminance (-Y) signal, a digital / analog converter 18 for converting a digital image signal output from the image processor 17 into an analog image signal, and outputting the analog image signal. The CRT driver 19 drives the CRT 20 based on the color tone signals R, G, and B and the luminance (-Y) signal output from the analog converter 18.

On the other hand, the remote control unit 7 for remotely instructing the overall operation of the television receiver, the receiving unit 8 for converting the infrared signal output from the remote control unit 7 into an electric code signal and outputting the television receiver It consists of a microprocessor 9 which controls the whole.

In the digital television configured as described above, the video signal of the broadcast signal received through the antenna 1 is converted into a digital signal, image processed, and then converted into an analog signal and output to the CRT 20.

Image correction and image quality improvement are performed to display the best screen for the output image. In general, analog broadcasting and digital broadcasting are distinguished from each other and image processing is performed by an independent method.

On the other hand, the optimum adjustment point of the video and sound of the television depends on the type of program received. In other words, the viewing environment of the image and the sound should be changed according to the program type such as news, movie, concert, sports, etc. so that the optimal viewing is possible.

Accordingly, the television has various TV viewing option adjustment modes for adjusting the video and audio states and setting various additional functions in the optimal state for each type of program.

That is, the sound mode includes a mode for listening to news, a mode for listening to music, a sound mode for watching a movie, a sound mode for watching sports, and the user can set conditions such as mono, stereo, surround, and so on. There is a user mode that can.

However, such a sound mode is inconvenient to use, because the user viewing the television has to manually reset the option information of the television including the acoustic conditions in order to maintain an optimal viewing environment according to the type of the program being viewed. have.

The present invention was created to solve the above problems, and an object of the present invention is to detect a motion amount and color distribution of a broadcast screen and automatically adjust a sound mode according to the contents of a broadcast, thereby manually selecting a user. The present invention provides a sound effect control apparatus and method of a television that can enhance the realism and realism of a broadcast with sound effects suitable for broadcast contents.

In accordance with an aspect of the present invention, an apparatus for adjusting sound effects of a television according to the present invention stores an image frame input for image processing under the control of a microprocessor and processes the image by storing the image frame in the image information storage. In the television which generates a sound effect, a motion amount detector for detecting a motion amount between a current video frame and a previous video frame stored in the video information storage unit, and a color distribution of the current video frame stored in the video information storage unit. A sound mode storage unit for storing the color distribution detection unit, a sound mode storage unit for storing the corresponding sound modes according to the motion amount and the color distribution, and a sound mode storage based on the motion amount and the color distribution value detected by the motion amount detection unit and the color distribution detection unit. Select the sound mode and transmit it to the microprocessor for sound effect Characterized in that it further comprises a sound mode selection unit for.

In the present invention, the sound mode storage unit may determine and store a multi-level sound mode based on the average amount of motion and color distribution of each genre of the broadcast program.

In addition, the sound effect adjusting method of the television according to the present invention is to detect the amount of motion through the current video frame and the previous video frame input in a state in which the automatic sound mode is set in the television to generate a sound effect according to the selected sound mode And detecting a color distribution in the current image frame, selecting a sound mode based on the detected motion amount and color distribution, and generating a sound effect through the selected sound mode. .

In the present invention, the sound effect is characterized in that it is applied in multiple stages according to the motion amount and the color distribution value.

The present invention made as described above is inverse of the program by predicting the genre of the program to be broadcast through the amount of motion detected by the current video frame and the previous video frame motion change and the color distribution of the current video frame when the automatic sound mode is set By automatically selecting the sound mode based on the dynamics and the environment, the sound effect is automatically generated without the user manually selecting the sound mode.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, and the same parts as in the prior art use the same reference numerals and names. In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only and those skilled in the art will be capable of many modifications within the technical spirit of the present invention.

2 is a block diagram showing the configuration of a television including a sound effect adjusting apparatus according to an embodiment of the present invention.

As shown here, an image frame is inputted for image processing under the control of the microprocessor 9 and stored in the image information storage unit 15 for image processing, and the sound effect is performed according to the sound mode selected by the audio processor 10. A motion amount detector 21 for detecting the amount of motion between the current video frame and the previous video frame stored in the video information storage 15 of the television, and the current video frame stored in the video information storage 15 A color distribution detector 22 for detecting a color distribution, an acoustic mode storage unit 24 for storing a sound mode corresponding to the motion amount and color distribution, a motion amount detector 21, and a color distribution detector 22 Based on the detected motion amount and the color distribution value in the), the sound mode selection unit 23 for selecting the sound mode from the sound mode storage unit 24 to transmit to the microprocessor 9 to generate a sound effectIt achieved by also.

At this time, the sound mode storage unit 24 sets and stores the sound modes of multiple stages based on the average amount of motion and color distribution of each genre of the broadcast program in advance.

Accordingly, when the automatic sound mode is set, the motion amount detected between the current video frame and the previous video frame stored in the image information storage unit 15 and the color distribution of the current video frame is detected to detect the motion in the sound mode selection unit 23. The sound processor 10 generates a sound effect by selecting the sound mode stored in the sound mode storage unit 24 based on the amount and the color distribution value and outputting the sound mode to the microprocessor 9.

In this case, the sound mode is applied in multiple stages according to the motion amount and the color distribution, thereby adjusting the level of the sound effect.

The sound effect adjusting method by the sound effect adjusting apparatus of the television made as described above will be described with reference to a flowchart for explaining the sound effect adjusting method of the television according to the embodiment of the present invention shown in FIG.

First, it is determined whether the automatic sound mode is set (S10). That is, only when the sound mode is automatically selected through the motion amount and the color distribution of the image, the sound effect is activated.

When the automatic sound mode is set as described above, the amount of motion is detected based on the current image frame and the previous image frame stored in the image information storage unit 15 (S20).

In other words, a dynamic program having a lot of motion, such as sports, has a large amount of motion, but a static program, such as news, has no motion, so that the sound effect is adjusted according to the amount of motion as the amount of motion decreases.

In addition, the color distribution of the current video frame is detected (S20).

That is, in the case of a stadium or an outdoor area, green light is distributed and has a bright screen, but indoors and studios may have different color distributions, so the sound effects are adjusted according to the scene.

The motion amount and color distribution of the broadcast program are detected, and the sound mode corresponding to the detected motion amount and the color distribution value is searched and selected by the sound mode storage unit 24 (S30).

At this time, since it is not possible to determine the exact scene based only on the broadcast image, the sound mode may be divided into multiple stages according to the motion amount and the color distribution value to select the sound mode.

The selected sound mode is transmitted to the microprocessor 9 so that the sound effect is generated and output from the sound processor 10 so that the sound effect is automatically generated and added according to the change of the image even if the user does not manually select the sound mode. It allows the user to watch the broadcast with realism and realistic (S40).

As described above, the present invention detects the motion amount and color distribution of the broadcast screen, and automatically adjusts the sound mode according to the broadcast content, so that the user can select the realism and realism of the broadcast with sound effects suitable for the broadcast content without the inconvenience of manual selection. There is an advantage to increase.

Claims (4)

In a television that stores an image frame input for image processing under the control of a microprocessor and stores the image frame in the image information storage, and generates a sound effect according to the sound mode selected by the voice processor. A motion amount detector for detecting a motion amount between the current video frame and the previous video frame stored in the video information storage unit; A color distribution detector for detecting a color distribution of the current image frame stored in the image information storage unit; A sound mode storage unit for storing a sound mode corresponding to a motion amount and a color distribution; A sound mode selection unit for selecting a sound mode from the sound mode storage unit and transferring the sound mode to a microprocessor based on the motion amount and the color distribution value detected by the motion amount detector and the color distribution detector. Sound effect adjusting device of the television, characterized in that further comprises. The sound effect control apparatus of claim 1, wherein the sound mode storage unit determines and stores a multi-level sound mode based on an average amount of motion and color distribution of each genre of a broadcast program. In a television that generates a sound effect according to a selected sound mode, Detecting the amount of motion through the current video frame and the previous video frame input while the automatic sound mode is set; Detecting a color distribution in a current video frame; Selecting a sound mode based on the detected motion amount and color distribution; Generating a sound effect through the selected sound mode Method for adjusting the sound effect of the television, characterized in that made. The method of claim 3, wherein the sound effect is applied in multiple stages according to the motion amount and the color distribution value.

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