KR20040008932A - Image displayer with automatically setting compasation data for video and sound - Google Patents

Abstract

PURPOSE: An image display system that automatically corrects images and sounds is provided to automatically correct images and sounds to the optimum set values. CONSTITUTION: An image display system that automatically corrects images and sounds includes a signal splitter(120), a signal processor(200), and a controller(300). The signal splitter splits a broadcasting signal output from a tuner(110) into a video signal and an audio signal. The signal processor processing the video signal and audio signal from the signal splitter and respectively outputs the video signal and audio signal to a screen(410) and a speaker(420). The controller controls the signal processor to adjust the picture quality of the screen and the tone of the speaker to predetermined values when a signal that indicates rating is detected from the output of the signal splitter.

Description

Image displayer with automatically setting compasation data for video and sound}

The present invention relates to a video display device, and more particularly, to a video display device for automatically correcting the image and sound.

As is well known, programs broadcast by air and cable stations are becoming increasingly sensational and violent. Accordingly, the United States has proposed a method for restricting viewing of programs by minors by adding a motion picture association of American rating (MPAA) signal indicating a program rating to programs transmitted from airwave stations and cable stations. The MPAA signal is mainly inserted into a movie program broadcasted by a broadcasting station, and a device (for example, "VCHIP") which detects the broadcast signal is embedded in a video display device such as a television receiving the broadcast signal. , Erotic movies, violent movies, etc.), to block the display of a particular program on the screen of the video display device and mute the sound (mute).

1 is a block diagram of a conventional video display device incorporating an MPAA detection unit.

The illustrated video display device includes a tuner 11, a signal separation unit 12, a signal processing unit 20, an MPAA detection unit 30, a microcomputer 40, an OSD display unit 50, a screen 60, and a speaker ( 70).

The tuner 11 selects a predetermined channel in response to an input signal from a setting key (for example, a channel switching key) attached to a video display device such as a television or a remote controller (not shown). The signal separator 12 separates and outputs video and audio data output from the tuner 11. The signal processor 20 processes the video and audio data output from the signal separator 12 by the video signal processor 21 and the audio signal processor 22 and outputs the image and audio data to the screen 60 and the speaker 70.

The MPAA detector 30 extracts the MPAA signal from the image data input to the image signal processor 21. The MPAA signal is a signal included in the image data and has predetermined grade information. The MPAA signal is a signal that can be viewed when the grade is lower than the grade set in comparison with the grade set in a video display device such as a television, and otherwise cannot be viewed.

When the microcomputer 40 detects the MPAA signal from the MPAA detector 30, the microcomputer 40 controls the video and audio output from the screen 60 and the speaker 70 to be blocked in response thereto, and the OSD display 50 displays the screen ( 60) to display a predetermined message on the screen. For example, a message such as "not available for minors" is displayed on the screen 60.

When the conventional video display device receives the MPAA signal, the video signal processing unit 21 and the audio signal processor 22 inside the video display device are compared with the grade set in the video display device and the grade information included in the MPAA signal. Determines whether to block the video and audio output from the system. Accordingly, the present inventors pay attention to the fact that the MPAA signal is mainly inserted into a video object such as a movie program, and when watching the video display device such as a television, the MPAA signal is automatically detected and the video signal processor 21 of the video display device. The present invention provides a video display device capable of setting an optimal setting value for watching a movie to the audio signal processor 22.

As described above, an object of the present invention is to provide a video display device in which a video and a sound are automatically corrected by an optimal setting value when watching a movie program.

1 is a block diagram of a video display device incorporating a conventional MPAA detector;

Figure 2 is a block diagram according to an embodiment of a video display device capable of setting video and audio data according to the present invention, and

3 is a flowchart illustrating a preferred embodiment of a method for setting image correction data and sound setting data of a video display device according to the present invention.

* Description of the symbols for the main parts of the drawings *

110: tuner 120: signal separation unit

200: signal processor 210: image signal processor

220: voice signal processing unit 300: control unit

310: MPAA detector 320: setting value storage unit

410: screen 420: speaker

According to the present invention, a signal splitter for separating and outputting a broadcast signal output from a tuner for tuning a broadcast channel into a video signal and an audio signal, and processing a video signal and an audio signal from the signal splitter, respectively, and display the screen. And a control unit for controlling the signal processing unit when detecting a signal indicating a movie grade from the output of the signal processing unit and the signal separation unit output to the speaker, thereby adjusting the image quality of the screen and the tone of the speaker to a predetermined value.

Preferably, the signal processor includes a video signal processor for processing the video signal output from the signal separator and a voice signal processor for processing the audio signal output from the signal separator.

Preferably, the signal indicating the movie rating is a Motion Picture Association Of American Rating (MPAA) signal.

Preferably, the control unit, the set value for outputting the image correction data and the sound setting signal to the video signal processing unit and the audio signal processing unit, respectively, according to the detection result of the signal detector and the signal detector for detecting a signal indicating a movie rating in the video signal; It has a storage.

According to the present invention, there is provided a predetermined value for the image and sound output from the image display apparatus when the image program is reproduced, the image grade signal is detected during the reproduction process, and the image grade signal is detected. By applying and correcting the image and sound.

Preferably, adjusting the video and audio further includes canceling the application of a predetermined value when the detection of the video rating signal is stopped.

Hereinafter, the present invention will be described in detail with reference to the drawings.

2 illustrates an embodiment of an image display apparatus for automatically correcting an image and sound according to the present invention.

The illustrated video display device includes a tuner 110, a signal separator 120, a signal processor 200, a controller 300, a screen 410, and a speaker 420.

The tuner 110 selects one of a plurality of broadcast signals transmitted from an airwave broadcasting station or a cable broadcasting station. The signal separator 120 separates the broadcast signal tuned by the tuner 110 into a video signal and an audio signal. The signal processor 200 processes the video signal and the audio signal output from the signal separator 120 and outputs them to the screen 410 and the speaker 420, respectively. The control unit 300 detects the MPAA signal from the image signal output from the signal separation unit 120, and according to the detection result, predetermined image correction data and sound previously stored in the image signal processing unit 210 and the audio signal processing unit 220. The setting data is output to the signal processor 200.

Preferably, the controller 300 includes an MPAA detector 310 and a set value storage 320.

The MPAA detector 310 detects the MPAA signal from the image signal output from the signal separator 120. In general, the MPAA signal is a signal that is included in the video signal in order to indicate the grade when a movie program is broadcasted by an airwave broadcasting station or a cable broadcasting station. Here, the MPAA detecting unit 310 detects whether the MPAA signal is included in the video signal, and the grade information included in the MPAA signal is not necessary.

When the MPAA detection unit 310 detects the MPAA signal, the setting value storage unit 320 performs image correction data and sound setting data optimized based on the assumption that the program tuned by the tuner 110 is a movie program. Will output The image correction data is data for correcting the bright representation of a program such as a movie on the screen 410 of the image display device. The sound setting data is based on the dolby, surround, and 5.1 according to the taste of the viewer. It is a signal to control functions such as channel support. Typically, such sound setting data is not used when watching news or culture programs. Therefore, when the MPAA signal is not detected by the MPAA detector 310 for a predetermined time, the setting value storage unit 320 supplies the image correction data and the audio setting data to the image signal processing unit 210 and the audio signal processing unit 220. I never do that. Accordingly, when the viewer switches channels to watch the news program while watching the movie program, the viewer does not have to reset the image correction data and the sound setting data optimized for the movie program previously watched to match the news program.

3 is a flowchart illustrating a preferred embodiment of a method for setting image correction data and sound setting data of a video display device according to the present invention.

First, the broadcast channel tuned by the tuner 110 is separated into an image signal and an audio signal, and then processed by the image signal processor 210 and the audio signal processor 220, respectively, to the screen 410 and the speaker 420, respectively. Output (S100).

Next, the MPAA signal is detected from the video signal input to the video signal processor 210 (S200). Here, the video and audio data setting method does not use the MPAA signal indicating the grade of the image for a general purpose of use (for example, limiting the viewing of a movie program for minors), and when the MPAA signal is detected, the movie program is received. Recognize. Accordingly, the present video and audio data setting method does not require the detection of the video rating information added to the MPAA signal.

Next, upon detecting the MPAA signal, the image signal processor 210 and the audio signal processor 220 are set to the image correction data and the sound setting data previously stored in the setting value storage unit 320 (S310). That is, it is assumed that the broadcast signal tuned by the tuner 110 is a movie program, and the image and sound are corrected. Accordingly, the screen 410 displays an image optimized for the movie program. In addition, the setting value of the voice signal processor 220 is changed to a predetermined value among Dolby, surround or 5.1 channel output. Here, the image correction data and the sound setting data stored in the setting value storage unit 320 are values that can be changed by the viewer. On the other hand, when the MPAA signal is not detected, the video signal and the audio signal applied to the video signal processor 210 and the audio signal processor 220, respectively, are processed without additional correction and output to the screen 410 and the speaker 420. (S320).

Lastly, when a viewer watches a news program or a sports program by changing a broadcast channel by a setting key attached to a video display device such as a remote control or a television while watching a movie program, detection of the MPAA signal from the movie program is stopped (S410). At this time, since the setting value storage unit 320 is disabled according to the detection result of the MPAA signal from the MPAA detector 310, the image correction data and the sound are transmitted to the image signal processor 210 and the audio signal processor 220. Supply of the setting data is stopped (S420).

Therefore, the video display device performs image correction and sound setting only for a specific genre (for example, a movie program) to be received. There is no need to correct the image and sound or to revert to the original image and sound settings after watching a movie.

As described above, the video display device can perform and release the video and sound correction by using the MPAA signal, so that the viewer does not have to perform the video and sound correction separately according to a specific genre.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the present invention is not limited to the specific embodiments of the present invention without departing from the spirit of the present invention as claimed in the claims. Anyone of ordinary skill in the art can make various modifications, as well as such changes are within the scope of the claims.

Claims (6)

A signal separator for separating and outputting a broadcast signal output from a tuner tuned into a broadcast channel into a video signal and an audio signal; A signal processor which processes the video signal and the audio signal from the signal separator and outputs the image signal and the speaker to the screen and the speaker, respectively; And And a controller configured to control the signal processor to adjust a picture quality of the screen and a tone of the speaker to a predetermined value when detecting a signal indicating a movie grade from the output of the signal separator. Video display device to automatically correct. The method of claim 1, The signal processing unit, An image signal processor configured to process an image signal output from the signal separator; And And an audio signal processing unit for processing the audio signal output from the signal separation unit. The method of claim 1, The signal indicating the movie rating is, A video display device for automatically correcting video and sound, characterized in that it is a Motion Picture Association Of American Rating (MPAA) signal. The method of claim 2, The control unit, A signal detector for detecting a signal indicating a movie grade from the video signal; And And a setting value storage unit for outputting the image correction data and the audio setting signal to the video signal processing unit and the audio signal processing unit, respectively, according to the detection result of the signal detection unit. Device. Playing the video program; Detecting an image rating signal in the reproducing process; And And correcting the image and the sound by applying a predetermined value to the image and the sound output from the image display device when the image class signal is detected. How to set sound setting data. The method of claim 4, wherein Adjusting the video and audio, And canceling the application of the predetermined value when the detection of the image grade signal is stopped.