KR100731533B1 - Method for auto setting video and audio mode of digital television - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically adjusting video and audio modes of a digital television. The program genre and program broadcast time are determined by using a program and system information protocol (PSIP) information, which is system information, among broadcasting information of a digital television. It automatically adjusts to the video and audio mode that is optimal for the user, and provides convenience that users do not have to adjust manually, and enables users to watch the program in the optimal viewing environment. When setting the optimal video and audio mode for the program genre, By dividing, the adjusted values can be adjusted while comparing with each other, so there is an advantage in that the correct video and audio modes can be set in the manual setting.

Program, Genre, PSIP, EPG, PIP, Video Mode, Voice Mode

Description

How to automatically adjust video and audio modes for digital television {METHOD FOR AUTO SETTING VIDEO AND AUDIO MODE OF DIGITAL TELEVISION}

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

2 is a flowchart illustrating a method for automatically adjusting video and audio modes of a digital television according to the present invention.

3 is a view illustrating a user setting screen in the method for automatically adjusting video and audio modes of a digital television according to 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 control unit

17: image processing unit 18: D / A converter

19: CRT drive unit 20: CRT

The present invention relates to a method for automatically adjusting video and audio modes of a digital television. More specifically, the program genre and the broadcast time of a program are determined using PSIP (Program and System Information Protocol) information, which is system information among broadcasting information of a digital television. The present invention relates to a method of automatically adjusting video and audio modes of a digital television, which is capable of viewing a program in an optimal viewing environment by automatically adjusting to a video and audio mode that is optimal for a program genre.

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 receiver.

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 processing unit 10 for performing voice processing such as bass, treble, volume, etc., and amplified voice signals processed by the voice processing unit 10, the speaker ( It consists of a voice amplifier 11 outputting 12).

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. The control signal of the microprocessor 9 for the analog-to-digital converter 13 to output, the video information storage 15 for storing the digital video signal, and the digital video signal output from the analog-to-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 a digital output 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 full image signal and corresponding R (Red), G (Green), B (Blue) ) 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 device 7 for remotely instructing the overall operation of the television receiver, the receiving unit 8 for converting and outputting an infrared signal output from the remote control device 7 into an electric code signal, and the entire television receiver. It consists of a microprocessor 9 for controlling.

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.

As an example, the image adjustment mode may include a mode for smoothly viewing the image quality, a mode for clearly viewing the image quality, and a mode for viewing the standard image, and the user may determine an adjustment point such as brightness, contrast, color, and sharpness. There is a user mode that can.

Next, the voice control 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 like. There is a user mode to set conditions.

However, according to the related art, in order to maintain an optimal viewing environment according to the type of programs watched by a user watching television, there is a problem of inconvenience in using the manual setting of TV option information including image and sound conditions manually. there was.

The present invention was created to solve the above problems, and an object of the present invention is to identify the program genre and the broadcast time of a program using PSIP (Program and System Information Protocol) information, which is system information among broadcasting information of a digital television. The present invention provides a method of automatically adjusting the video and audio modes of a digital television, so that the program can be viewed in an optimal viewing environment by automatically adjusting to the optimal video and audio modes for the program genre.

It is also an object of the present invention to provide a method for automatically adjusting the video and audio modes of a digital television, which is configured to compare and adjust the adjusted values by dividing the screen when setting the video and audio modes that are optimal for the program genre.

According to the present invention for achieving the above object, the video and audio modes for each program genre are divided by the PIP function, and the video and audio modes are changed while comparing the set states. Receiving the program genre and broadcasting time according to the received broadcasting information; and adjusting the video and audio modes set according to the corresponding program genre during the broadcasting time according to the identified program genre and broadcasting time. Characterized in that made.

Program genre in the present invention is characterized by including news, movies, sports, drama, music, cartoons, user preference mode.

In the present invention, it is characterized in that the basic setting value of the video and audio mode for each program genre is provided.

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The present invention is characterized in that, when the broadcast information is not received in the step of receiving broadcast information, the automatic adjustment mode is terminated and the basic video and audio mode is set.

The present invention made as described above sets the video and audio mode that can provide the optimal screen and sound for each program genre, and then grasps the program genre and the broadcasting time according to the degree of broadcasting and switches to the optimal video and audio mode according to the corresponding program. In addition, the user can watch television in an optimal environment without complicated setting by the user, and the user can easily change the setting values provided by the user so that they can watch television according to their own preferences.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. 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 the same parts as in the conventional configuration using the same reference numerals and names.

2 is a flowchart illustrating a method for automatically adjusting video and audio modes of a digital television according to the present invention.

First, the video and audio modes according to the program genre are set (S10). At this time, the basic setting values for the video and audio modes according to the program genre of the television are basically provided, and the user may be reset according to his or her taste.

For example, for a sports program, the image mode sets the sharpness adjustment point to increase the resolution, and sets the brightness and brightness adjustment points slightly higher. And, the voice mode is set to the surround mode (ON) to make a sense of reality, the frequency characteristics of the audio equalizer is set to maintain the standard frequency characteristics.

And, for the movie program, the image mode sets the sharpness adjustment point to lower the resolution to make the image look smooth, and sets the brightness and brightness adjustment points to be similarly low to give a cinematic atmosphere. And, the voice mode is turned on (ON), the frequency characteristics of the audio equalizer is set so that the bass is emphasized compared to the high.

In this way, video adjustment information, audio adjustment information, and additional function information are set in the program genre of music, news, drama, etc. so as to provide an optimal TV viewing environment suitable for the characteristics of the broadcast program.

On the other hand, there is a problem that can not distinguish between the difference when setting while watching only one screen, as shown in Figure 3 by dividing the screen into the PIP function on one side of the screen while watching a sports program clear image, standard image, smooth image In addition to setting user image, low tone reinforcement, low / high reinforcement, mid tone reinforcement, and user EQ adjustment are made. On the other screen, the user can set clear image, standard image, soft image, user image as well as low tone reinforcement while watching movie program. It allows you to adjust bass / treble reinforcement, midrange reinforcement, and user EQ so that you can change the setting value of video and audio mode while moving left and right.

In addition, the user preference mode can be set independently so that the user can set the user's preferred mode regardless of the program genre by viewing the user's favorite video mode and audio mode.

In the state in which the video and audio modes according to the program genre are set as described above, it is determined whether an automatic adjustment mode for automatically adjusting the video and audio of the television is set according to the program genre (S20).

If the automatic adjustment mode is not set, the video and audio broadcast by the basic video and audio mode are output (S70).

However, when the automatic adjustment mode of the video and audio for each program genre is set, the genre and the broadcast time of the corresponding program are determined through the PSIP information input together with the broadcast signal (S30) (S40).

If the PSIP information is not received, the screen and audio broadcast by the basic video and audio mode are output (S70).

Therefore, the video and audio are set to be output according to the video and audio modes set according to the genre of the corresponding program broadcast according to the broadcast time (S50).

As such, when the corresponding program ends when the video and audio modes are automatically set according to the program genre (S60), the basic video and audio modes are changed. When another program genre is broadcast, the video and audio modes according to the corresponding program genre. It is set to and output (S70).

As described above, the present invention uses the PSIP (Program and System Information Protocol) information, which is the system information, of the broadcasting information of digital television to grasp the program genre and the broadcast time of the program, and automatically adjusts the video and audio modes that are optimal for the program genre. Therefore, the user does not have to adjust manually, but also has the advantage of viewing the program in the optimal viewing environment.

In addition, when setting the video and audio mode that is optimal for the program genre, the screen can be adjusted by comparing the adjusted values by dividing each other, and thus, there is an advantage in that the correct video and audio mode can be set during manual setting.

Claims (5)

Setting the video and audio mode by changing the video and audio modes by dividing the screen with the PIP function by comparing the set statuses by the PIP function, Determining whether the automatic adjustment mode of the video and audio is performed; Receiving broadcast information in the automatic adjustment mode; Determining a program genre and a broadcasting time according to the received broadcasting information; Adjusting to the video and audio modes set according to the corresponding program genre during the broadcasting time according to the program genre and broadcasting time identified above. Method for automatically adjusting the video and audio mode of a digital television comprising a. The method of claim 1, wherein the program genre includes news, movies, sports, dramas, music, cartoons, and user preference modes. The method of claim 1, wherein the basic setting values of the video and audio modes for each program genre are provided. delete The method of claim 1, wherein if the broadcast information is not received in the receiving of the broadcast information, the automatic adjustment mode is terminated and the basic video and audio mode is automatically adjusted. .

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