KR100747842B1 - Method for selecting audio according to screen size change in picture display device - Google Patents

Abstract

When the screen size change command is input in the double window mode in which two screens are displayed, the size of the two screens is changed according to the screen size change command, the size of the changed screen is measured, and the measured screen As the output of the voice of the screen corresponding to the large size in the size, the user can be switched according to the ratio of the size of the size of one screen or two screens to use, without changing the voice can be eliminated user inconvenience .

Video display device, screen size, audio selection, PIP

Description

 Method for selecting audio according to screen size change in picture display device}

1 is a block diagram schematically illustrating a configuration of a video display device in which audio is automatically selected according to a change in screen size according to the present invention.

2 is a flowchart illustrating a method of selecting a voice according to a change in screen size in a video display device in the double window mode according to the present invention.

3A to 3D are screens for explaining FIG. 2.

4 is a flowchart illustrating a method of selecting a voice according to a change in screen size in a video display device in the PIP mode according to the present invention.

5A and 5B are screens for explaining FIG. 4.

<Explanation of symbols for the main parts of the drawings>

100: key input unit 110: tuner

120: demodulator 130: demultiplexer

140: audio / video decoder 150: audio processor

160: video processing unit 170: audio output unit

180: video output unit 190: control unit

200: storage 210: scaler

The present invention provides a voice selection method according to a screen size change in a video display device in which a voice output is automatically switched according to a size change of one or two screens without a user switching the voice.

As the multimedia industry enters the digital era, there is an increasing demand for users to feel clearer, clearer images and more realistic sound effects. In addition, with the vitalization of the multimedia industry, media with various types of video and audio formats have also increased, and users' demands for these have increased.

Looking at the TV products that are currently being distributed in this trend, the reality is that the functions are being expanded to cope with not only the analog TV signal but also the digital TV signal, DVD, DVI, VCR and various other inputs.

Users using TV products corresponding to various inputs also have an increased demand for seeing more than one input at a time.

Representatives satisfying such demands include a PIP or a double window method. The PIP or double window method outputs two broadcast and media inputs to a user at a time, thereby allowing the user to input a broadcast or media more easily. To select it.

In this case, the PIP or the double window method can display two video outputs at once, but only one audio output should be output at a time.

That is, the double window method is a method of showing two input sources at the same time, and in this case, generally, two input sources are arranged and displayed on the left and right, and each window size is adjusted by a user's selection.

However, even if two input sources are shown at the same time in the left and right windows, the audio output should be output for only one input source. Therefore, the user should select which of the two input sources is selected as the final output in the double window. The problem arises.

That is, in the digital TV using the double window method or the digital TV having the PIP function, a plurality of video signals can be output through a sub screen, but only one audio signal must be output, so that the user sets a path for effective audio output. There is a hassle to do.

In addition, when the size of the first screen or the second screen changes, the voice outputs the sound of the screen selected by the user to the speaker, and the user may change the screen from one screen to two screens or from two screens to one screen. It is inconvenient to hear the voice of the desired screen only by switching the voice.

Accordingly, an object of the present invention is to provide a voice selection method according to a screen size change in a video display device in which the user can automatically switch the audio output according to the size change of one or two screens without switching the voice. .

According to an aspect of the present invention to achieve the above object, when a screen size change command is input in a double window mode in which two screens are displayed, the size of the two screens are changed according to the screen size change command, and a full screen is displayed. According to the screen size change in the video display device, the size of the changed screen is measured based on the horizontal center line of the screen and the screen size is measured based on the horizontal center line. A voice selection method is provided.

Even though the two screens have different vertical lengths, the two screens have the same size based on the horizontal center line.

According to another aspect of the present invention, when the size of the PIP screen is changed in the PIP mode in which the main screen and the PIP screen are outputted, the degree to which the changed PIP screen covers the main screen is calculated, and the calculated degree of covering is previously determined. A method of selecting a voice according to a screen size change is provided in the video display device which determines whether the threshold value is greater than or equal to a predetermined threshold value and the screening result is greater than or equal to a predetermined threshold value.

When the size of the PIP screen is changed, the voice is output using a degree to which the changed PIP screen covers a predetermined predetermined area of the main screen.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically illustrating a configuration of a video display device in which audio is automatically selected according to a change in screen size according to the present invention.

Referring to FIG. 1, an image display apparatus in which audio is automatically selected according to a screen size change includes a key input unit 100 for providing a key input signal, a channel selection signal, and a key input signal for turning on / off power, and the key input unit. The tuner 110 tunes to a channel corresponding to a channel selection key input signal provided by 100 and receives a TV broadcast signal of a corresponding channel transmitted from a broadcasting station through an antenna, and a broadcast program received through a tuned channel. A demodulator 120 for demodulating video and audio signals to correct errors and converting them into a transport stream form, demultiplexer 130 for demultiplexing a time multiplexed transport stream, that is, separating video, audio, and additional information signal streams; An audio / video decoder 140 for extending / reconstructing the video and audio signal sequences and an audio signal output from the audio / video decoder 140 The audio processor 150 converts the analog audio signal to be output through a speaker, the audio signal output from the audio processor 150 is amplified by a predetermined level, and then finally outputs to the audio / video. A video processor 160 for converting the video signal output from the decoder 140 into luminance and color signals to be displayed on the screen, and a video output unit 180 for displaying the image signal processed by the video processor 160 on the screen. A storage unit 200 for storing program guide information, detailed information, and recorded programs, a controller 190 for controlling operations of each unit of the image display device, and two screens output through the video output unit 180. It includes a scaler 210 for measuring the size of each screen.

When the screen size change command is input through the key input unit 100 in the double window mode / PIP mode, the controller 190 transmits a screen size change command to the video processor 160 to transmit the video output unit ( In step 180, a screen having a size according to the command is output.

The scaler 210 measures the size of the screen output from the video output unit 180 and transmits the measurement result to the controller 190.

When the screen size measurement result is received from the scaler 210, the controller 190 selects a voice output through the audio output unit 170 according to the reception result. For example, when the first screen and the second screen are displayed, and a voice corresponding to the second screen is output, when the user increases the first screen to be larger than the second screen, the controller 190 controls the audio. The voice of the first screen is output to the output unit 170.

Hereinafter, a method of converting an output of an audio signal according to screen size conversion in a video display device configured as described above will be described with reference to FIG. 2.

FIG. 2 is a flowchart illustrating a method of selecting a voice according to a screen size change in a video display device in the double window mode according to the present invention. FIGS. 3A to 3D are screens illustrating FIG. 2.

Referring to FIG. 2, the video display device determines whether a screen size change command is input by a user in a double window mode (S200).

If the screen size change command is input from the user as a result of the determination of step 202, the video display device changes the size of the corresponding screen according to the input screen size change command (S204).

Then, the image display device measures the size of the changed screen (S206). The audio of the screen corresponding to the larger size is output from the measured screen size (S208). At this time, the image display device measures the size of the screen based on the center line of the screen, and outputs the audio of the screen having a large screen based on the center line. The center line of the screen is fixed as a reference with respect to the horizontal center.

For example, with reference to FIGS. 3A to 3D, a method of converting an output of an audio signal in accordance with screen size conversion in a video display device will be described.

FIG. 3A is a double window initial screen. Since screen A and screen B have the same size with respect to the center line, the voice of the screen selected by the user (here, the voice of screen A is selected) is output. . In this state, you must use the swap command to hear the voice of the other screen.

3B shows only the vertical length of the B screen in the state of FIG. 3A. In this case, since the vertical lengths of the A screen and the B screen are different, but the size is the same with respect to the center line, the audio of the A screen is output as shown in FIG. 3A.

3C illustrates a case where the size of the screen A is reduced by increasing the size of the screen B in the state of FIG. 3A. In this case, since the size of screen B is larger than that of screen A based on the center line, audio of screen B is output.

FIG. 3C illustrates a case where the size of the screen A is reduced by increasing the size of the screen A in the state of FIG. 3A. In this case, since the size of the screen A is larger than that of the screen B on the basis of the center line, the audio of the screen A is output as shown in FIG. 3A.

In the double window mode as described above, the size of the two screens is measured based on the horizontal center line of the screen, and the voice of the screen corresponding to the larger size is output. Although the two screens have different vertical lengths and two screens have different sizes, if the two screens have the same size based on the horizontal center line, the original voice is output.

4 is a flowchart illustrating a method of selecting a voice according to a screen size change in a video display device in the PIP mode according to the present invention. FIGS. 5A and 5B are screens for explaining FIG. 4.

Referring to FIG. 4, the video display device determines whether the size of the sub screen is changed in a state where the voice of the main screen is output in the PIP mode (S400).

As a result of the determination in step 402, when the size of the sub screen is changed, the video display device calculates the degree to which the sub screen obscures the main screen (S404), and determines whether the degree of the sub screen is equal to or greater than a predetermined threshold value (S406).

As a result of the determination in step 406, if the degree of covering the main screen is greater than or equal to the threshold value, the video display device does not output the voice of the main screen but outputs the voice of the sub screen (S408).

If the subscreen hides the main screen as a result of the determination in step 406, the video display device outputs the audio of the main screen as it is (S410).

For example, with reference to FIGS. 5A and 5B, a method of converting an output of a voice signal according to screen size conversion in a video display device will be described.

5A shows a screen A as a main screen and a screen B as a sub screen as an initial screen of the PIP mode. At this time, the A screen sound is output.

5B illustrates a case in which the screen B is enlarged in FIG. 5A. Since the screen B covers the screen A more than a predetermined threshold, audio of the screen B is output.

According to another embodiment of the present invention, in the PIP mode, a predetermined region to which the audio output is switched may be predetermined, and when the sub screen covers the predetermined predetermined region, the voice corresponding to the sub screen may be output.

The present invention is not limited to the above embodiments, and many variations are possible by those skilled in the art within the spirit of the present invention.

As described above, according to the present invention, the user can switch the voice according to the rate at which the size of one or two screens is increased without changing the voice, and thus the user's inconvenience can be eliminated. It is to provide a voice selection method according to the size change.

Claims (4)

Changing a size of the two screens when a screen size change command is input in the double window mode in which two screens are displayed; Measuring the size of the changed screen based on a horizontal center line irrespective of the vertical size in a full screen; and Outputting a voice corresponding to a screen having a large size measured based on the horizontal center line Voice selection method according to the screen size change in a video display device comprising a. The method of claim 1, 2. The method of selecting a voice according to a screen size change in a video display device, characterized in that, although two screens have different lengths and two screens have different sizes, the two screens have the same size based on a horizontal center line. Calculating a degree to which the changed PIP screen covers the main screen when the size of the PIP screen is changed in a PIP mode in which a main screen and a PIP screen are output; Determining whether the calculated covering degree is greater than or equal to a predetermined threshold; and Outputting the voice of the PIP screen when the screening level is greater than or equal to a predetermined threshold as a result of the determination; Voice selection method according to the screen size change in a video display device comprising a. The method of claim 3, The voice selection method according to the screen size change in the video display device, characterized in that when the size of the PIP screen is changed, the voice is output by using the extent that the changed PIP screen covers a predetermined predetermined area of the main screen.

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