KR100539519B1 - Method for caption control of korean caption decoder in case cursor position is at 39th column or 40th column. - Google Patents

Abstract

The present invention provides a video broadcasting system that provides video information together with audio information, such as TV broadcasting. The present invention provides subscribers with various information such as caption and text information such as living information along with the provided video information. The present invention relates to a video broadcasting system, and more particularly, to a subtitle control method according to a position of a cursor in expression in a Korean subtitle.

In the standard for displaying Korean subtitles, it is possible to display from 1 to 10 lines on the screen, up to 3 lines on one screen, and 40 columns in one row. At this time, the Korean subtitles in the Korean subtitles are displayed in English, and the special characters are displayed in half-width characters, a problem occurs when the position of the cursor is located in 39 or 40 columns.

In the present invention, after determining whether the signal to be processed is a display character or a control code, depending on the position of the cursor (when there are 39 or 40 columns), whether or not the character exists at the current cursor position and the former or half character is used. It is to provide a caption processing method for processing display characters, controlling control codes, and controlling the position of a cursor in consideration of authorization.

Description

Method for caption control of korean caption decoder in case cursor position is at 39th column or 40th column.}

The present invention provides a video broadcasting system that provides video information together with audio information, such as TV broadcasting. The present invention provides subscribers with various information such as caption and text information such as living information along with the provided video information. The present invention relates to a video broadcasting system, and more particularly, to a subtitle control method according to the position of a cursor in expression in a Korean subtitle.

In a video broadcasting system such as a public TV broadcasting system and a cable broadcasting system, additional information is provided to subscribers along with a TV signal including audio information and video information in order to enhance viewers' convenience and use.

In the TV broadcasting system, character information called teletext by KBPS (Korean Broadcasting Program System) is transmitted to the viewer in a form included in the TV signal.

In addition, TV broadcasting systems have a trend of providing subtitles for voice signals, also called caption service functions, and additionally providing text information to these subtitles.

If such a broadcasting system is implemented, it is possible to easily watch TV even when the voice cannot be heard, such as hearing impaired people, and it is possible to access various text information.

As such, there is an English subtitle function for displaying English subtitles and a Korean subtitle function for providing viewers with Korean subtitles.

The present invention relates to a Korean subtitle function, and to display a Korean subtitle, to control the processing of a character and a control code to be displayed according to the position of the cursor.

In the standard for displaying Korean subtitles, it is possible to display from 1 to 10 lines on the screen, up to 3 lines on one screen, and 40 columns in one row.

At this time, the Korean subtitles in the Korean subtitles are displayed in English, and the special characters are displayed in half-width characters, a problem occurs when the position of the cursor is located in 39 or 40 columns.

In the present invention, after determining whether the signal to be processed is a display character or a control code, the display character is processed in consideration of whether the character is present at the current cursor position and whether it is electronic or half-digital according to the position of the cursor. It is an object of the present invention to provide a caption processing method that performs control code processing and cursor position control.

The present invention relates to a subtitle processing in accordance with the normal cursor position when the current cursor position is other than 39 or 40 columns, and to a control processing procedure applied when the cursor position is present in 39 or 40 columns. ,

Receiving a display character and a control code;

Determining whether the received signal is a display character or a control code when the current cursor position is 39 or 40;

If it is a control code, the execution process corresponding to the control code is performed, and if it is a display character, determining the position of the current cursor and whether the display character is full or half-width;

If the current cursor position is in column 39, the former is displayed in the former on line 39 and 40, the cursor position is set to the original position in column 39 without changing the position, and the current cursor position is half a column in column 39. Determining whether a character exists at the current cursor position;

If there is no character at the current cursor position, display the half-width to display in column 39, move the cursor position as much as the displayed character to column 40, and if the character exists, whether the existing character is full or half-width. To make a difference,

If the existing character is the former, line 39 displays the half-character, which is the display character, line 40 displays the blank character, sets the cursor position to column 40, and displays the half-width in column 39 if the existing character is half-width. Setting the cursor position to column 40,

If the current cursor position is in column 40 and the display character is former, display the empty characters in column 40, set the cursor position to 40 columns. If the current cursor position is in column 40 and display characters are half-width, display half-width characters in column 40. In this case, the position of the cursor is set as it is in column 40.

In the above process, when the input control code is the left erase control code, the control procedure is a process of determining whether 39 columns or 40 columns;

Determining whether an erased character is an electronic character or a half character,

If the character to be deleted in column 39 is the former, delete the first two columns of columns 39 and 40 and column 39. If the character to be deleted in column 39 is the half-width character, delete the half column of columns 39, 40 and 39, and the left one. Moving the previous column by the deleted character from column 39 of the current cursor position,

If the character to be deleted in column 40 is the former, delete the first two columns of columns 40 and 40, and if the character to be deleted in column 40 is the half-width, delete the half-width in the left column of columns 40 and 40, and the position of each cursor is at position 40 It is executed by the procedure of moving to the previous column by the deleted character from the column.

The present invention having the execution procedure as described above is applied to a video broadcasting receiver as shown in FIG. 2. First, the video broadcasting transmitter and the video broadcasting receiver shown in FIG. The operation is briefly described as follows.

As shown in FIG. 1, the apparatus for transmitting a video broadcast,

A subtitle signal generator 11 for generating a subtitle signal according to the voice signal by inputting the voice signal from the TV program source 10 in which the program video signals including the voice signal are stored, and various information such as news, weather and traffic information. Character information source 12 is provided that provides text information about

The caption signal generating unit 11 designates a caption mode according to the Korean audio signal and the English audio signal according to the mode control signal supplied from the program source 10, thereby capturing the caption signal synchronized with the audio signal through its own font. It generates and outputs to the first synthesizer (12).

At this time, the caption signal generating unit 11 generates a caption signal by adding a control code for determining the position of the caption and the attribute of the size, color, etc. of the displayed caption.

In the first synthesizer 13, a caption signal input through the caption signal generator 11 and the text information signal input from the text information source 12 are synthesized to generate multiple caption signals.

In the first synthesizer 13, the caption signal input from the caption signal generator 11 is preferentially selected and output to the second synthesizer 14 so that the caption signal for the audio signal can be normally transmitted.

In the second synthesizer 14, the multi-subtitle signal input from the first synthesizer 13 is inserted into the vertical retrace section (vertical blanking section) of the video signal of the TV program source 10 and added. The signal is a composite video signal including a caption signal, a video signal, and an audio signal, and is transmitted to the subscriber-side viewer through the signal transmitter 15.

In addition, such a composite video signal is recorded and stored on a storage medium such as an optical disc, a video cassette tape, or the like in the image recorder 16 so that it can be reproduced later.

And, as shown in Figure 2, the video broadcast receiving apparatus for receiving and decoding the video signal according to the above configuration,

The signal transmitted from the video broadcasting transmitter restores the program video signal through the high frequency signal receiver 20.

The video signal stored by the video recorder 16 is reproduced through the video player 21.

As described above, the caption signal included by the caption signal extractor 22 is extracted from the video signal restored by the high frequency signal receiver 20 or the video signal reproduced through the video player 21. The signal is decoded by each decoder, subtitle signal decoder 23 and character information decoder 24, respectively.

At this time, the caption signal decoder 23 separates the character code and the control code from the caption signal, determines the display position of the caption, its display form, etc., according to the separated control code, and according to the result, the caption image for the character code. Will generate a signal.

In this case, the Hangul is set to the size of the former, the English and special symbols, etc. are set to have a half-size.

As described above, the caption signal and the character information signal output from the character information decoder 24 and the caption signal decoder 23 are selectively output to the synthesizer 26 by the switch 25 switched by the user's selection.

That is, while the signal input to the synthesizer 26 is determined according to the viewer's selection, the Korean / English subtitle signal and the character information video signal are selected.

Subsequently, the synthesizer 26 adds the decoded caption signal or text information signal to the reconstructed video signal and displays the voice signal or text information signal synchronized with the voice on the screen through the program display device 27. .

In the above-described operation, the display character and the control code are included in the TV broadcast signal in the video broadcasting transmitter and transmitted, and the caption is displayed on the TV screen received by the video broadcasting receiver.

At this time, the video broadcasting receiving apparatus decodes the control code and the display text signal from the composite video signal transmitted from the video broadcasting transmitting apparatus and displays the display text and the display text according to the cursor position and the cursor position in the execution procedure as shown in FIG. Will proceed to the left erase mode,

When the display character or control code is received, it is recognized to determine whether the received signal is a display character or a control code.

In the case of the display character, the display character is determined from the current cursor position to be the former or half character, and accordingly, the display position is shifted by the displayed character from the current position while displaying the display character.

For example, if the current cursor position is 2 columns and the display character is the former, the former is displayed in the 2nd and 3rd columns, and the cursor position is 4 columns with +2.

On the other hand, in the case of the left control code, the position of the cursor is moved from the current cursor position according to whether the character in the left column is full or half-width.

If the character to be deleted is the former, the left two columns are deleted, and the cursor position is -2 columns from the current position. In the case of half-width characters, the left one column is deleted from the current cursor position. It is the position of column -1 from the current cursor position.

However, the above execution procedure is a case where the position of the cursor is set to a normal position, and as mentioned above, a problem occurs when the position of the cursor exists in the 39th column and the 40th column on the last column side.

The present invention is to solve this,

4A, 4B, and 4C are flowcharts illustrating control procedures according to an embodiment of the present invention, which will be described with reference to the accompanying drawings.

The following describes the execution procedure in detail.

If the current cursor position is in column 39 or column 40, it is determined whether the received signal is a display character or a control code.

If it is a control code, an execution process corresponding to the control code is performed. Next, a control code erased from the control code will be described with reference to FIG. 4C.

First, in the case of the display character, it is determined whether there is a character at the current cursor position.

If there is no character as a result of the determination, the execution sequence as shown in FIG. 4B is obtained, which will be described later.

If there is a character as a result of the determination, it is determined whether the display character is the former or half character at the current cursor position, which is illustrated in FIG. 5A.

If the current position of the cursor is not half-width in column 39, that is, in the former case, the letter in the 39th column and 40th column is overwritten, regardless of whether the character in column 39 or 40 is full-width or half-width.

The cursor position is located at column 39.

Here, when the display character is half-width in column 39 of the current cursor position, the display is changed according to the case where the existing character is the former or half-width.

If the existing character is the former, as shown in the second of FIG. 5A, half-width characters are displayed in column 39 and empty characters are displayed in the remaining 40 columns.

At this time, the position of the cursor is 40 columns.

However, if the existing character is a half character, the half character of the display character is displayed in column 39 as it is, and the cursor is set in column 40.

As illustrated in FIG. 5B, when the current position of the cursor is the former in the 40th column, the display character is no longer displayed. Therefore, the empty space is displayed in the 40th column, and the position of the cursor is positioned in the 40th column.

If the display character is half-character in position 40, the cursor is displayed as it is, and the position of the cursor is left in position 40.

In this case, it is impossible to have the position of the cursor in the 40th column, because the position of the cursor exists in the 39th column.

On the other hand, when the character is present at the position of the cursor in the case where the position of the cursor is present in column 39, as shown in FIG. The position of the cursor is set in column 39 when the display character is the former, and in column 40 when it is the half character.

If the current cursor is located in column 40, as shown in FIG. 6B, if the display character is one half-character, it is displayed as it is, the position of the cursor is placed in column 40, and in the former case, an empty character is displayed in column 40, and the position of the cursor The same applies to column 40.

On the other hand, looking at the execution process of the left erase control code having the execution sequence as shown in Figure 4c,

When the cursor position is 39 columns, as illustrated in FIG. 7A, when the processing is performed normally, only the half-width of column 38 or the former of columns 37 and 38 may be deleted.

In fact, the cursor is in position 39, which fills up to 40 columns of electrons, and the cursor is in position 39, so the 39 and 40 columns of electrons are erased.

At this time, the cursor position is set to -1 column from the current cursor position when the former column is deleted, and the cursor is set at column 38, and when the half-width of the left column is deleted, the cursor is located at column 37 -2 from the current cursor position. Set the position of.

Here, if there are half characters in column 39, the position of the cursor is located in column 40, which is not possible in this case.

As illustrated in FIG. 7B, when the cursor is positioned in the 40th column, this is the case where there is no character in the 40th column and the half character.

If the cursor is placed in column 40, the column is deleted if it is a half-width character, and column one is deleted from column 40 of the current cursor position, and in the former, column two is deleted from column 40 and the current cursor position column 40.

At this time, the position of the cursor is set by -2 columns if the deleted character is the former, and -1 if the half character is the former.

In addition, as described above, since the position of the cursor cannot exceed 40 columns, the case where the position of the cursor is set in 40 columns is considered.

As described above, when the position of the cursor is normal, the position control of the cursor, the display of the display character, and the control code can be controlled according to the size of the display character and the size of the character to be deleted, and the position of the cursor is 39 columns. And position 40 and the position of the cursor and the display character in consideration of whether or not the character exists at the current cursor position, the size of the existing character, the size of the erased character, etc. in consideration of the state where the cursor is not normally positioned. By controlling the process of erasing the deleted character, it is possible to solve the problem when the cursor is positioned in the 39th and 40th column in processing the Korean subtitle.

1 is a block diagram schematically showing the configuration of a video broadcasting transmission apparatus to which the present invention is applied.

Figure 2 is a block diagram schematically showing the configuration of a video broadcast receiving apparatus to which the present invention is applied.

3 is a flowchart showing the position control procedure of the cursor when the position of the cursor is normal in the present invention.

4A, 4B, and 4C are flowcharts illustrating control procedures of an example of a method for controlling a caption according to a cursor position of the Hangul caption receiving device of the present invention.

FIG. 5A is a view showing an operating state when a current cursor position is 39 columns and a character exists at a current cursor position. FIG.

FIG. 5B is a diagram showing an operating state when a current cursor position is 40 columns and characters exist at the current cursor position. FIG.

FIG. 6A is a diagram showing an operating state when the current cursor position is 39 columns and no character exists at the current cursor position. FIG.

FIG. 6B is a diagram showing an operation state when a position of the current cursor is 40 columns and a character exists at the position of the current cursor in the present invention. FIG.

FIG. 7A is a diagram showing an operation state of a left erase control code with 39 columns of current cursor positions in the present invention; FIG.

FIG. 7B is a diagram showing an operation state of a left erase control code with 40 columns of current cursor positions in the present invention; FIG.

Claims (2)

Receiving a display character and a control code; Determining whether the received signal is a display character or a control code when the current cursor position is 39 or 40; If it is a control code, the execution process corresponding to the control code is performed, and if it is a display character, determining the position of the current cursor and whether the display character is full or half-width; If the current cursor position is in column 39, the former is displayed in the former on line 39 and 40, the cursor position is set to the original position in column 39 without changing the position, and the current cursor position is half a column in column 39. Determining whether a character exists at the current cursor position; If there is no character at the current cursor position, display the half-width to display in column 39, move the cursor position as much as the displayed character to column 40, and if the character exists, whether the existing character is full or half-width. To make a difference, If the existing character is the former, line 39 displays the half-character, which is the display character, line 40 displays the blank character, sets the cursor position to column 40, and displays the half-width in column 39 if the existing character is half-width. Setting the cursor position to column 40, If the current cursor position is in column 40 and the display character is former, display the empty characters in column 40, set the cursor position to 40 columns. If the current cursor position is in column 40 and display characters are half-width, display half-width characters in column 40. And a cursor position of the Korean subtitle receiver according to the cursor position, wherein the position of the cursor is set to 40 columns. The control procedure according to claim 1, wherein in the process, the input control code is a left erase control code. Determining whether the column is 39 or 40, Determining whether an erased character is an electronic character or a half character, If the character to be deleted in column 39 is the former, delete the first two columns of columns 39 and 40 and column 39. If the character to be deleted in column 39 is the half-width character, delete the half column of columns 39, 40 and 39, and the left one. Moving the previous column by the deleted character from column 39 of the current cursor position, If the character to be deleted in column 40 is the former, delete the first two columns of columns 40 and 40, and if the character to be deleted in column 40 is the half-width, delete the half-width in the left column of columns 40 and 40, and the position of each cursor is the position of the current cursor. A subtitle control method according to a cursor position of a Korean subtitle receiving apparatus, characterized in that the execution sequence of the process of moving to the previous column by the deleted character from the column.