KR100273411B1 - Apparatus and method for controlling closed caption display in korean closed caption broadcasting - Google Patents

Abstract

PURPOSE: A device for controlling caption display of a Korean character caption broadcasting is provided to select one of four caption display methods according to a caption display control code, and to display captions in a corresponding mode, then to display captions corresponding to a video, so as to improve caption readability. CONSTITUTION: If a Korean character caption code receiver(121) separately receives a Korean character caption code from video signals, a caption display selector(122) decides a corresponding mode in accordance with the Korean character caption code, among 4 caption display modes, to decode corresponding data to output the decoded data to a caption editor(123). The caption editor(123) edits the data according to the corresponding caption display mode, and outputs a character code and a control code to a caption display(124). The caption display(124) modulates the character code and the control code according to a corresponding signal, and outputs the modulated codes to a video synthesizer. The character code and the control code are synthesized with the video data.

Description

Subtitle display control device and method for Korean subtitle broadcasting {APPARATUS AND METHOD FOR CONTROLLING CLOSED CAPTION DISPLAY IN KOREAN CLOSED CAPTION BROADCASTING}

The present invention relates to Korean subtitle broadcasting, and more particularly, to an apparatus and method for controlling subtitle display.

In general, there are three modes of displaying English subtitles: pop-on, continuous subtitles, paint-on subtitles, and roll-up subtitles.

Therefore, in the subtitle display operation, when a transmission side selects and transmits one of three modes, the reception side decodes the control code and displays the subtitle on the screen according to a predetermined type.

However, the Korean subtitle mode display method including four sub modes in addition to the instant subtitles, the continuous subtitle mode, and the subtitle subtitles is included in the control code, character code form, display method, etc. when the conventional English subtitle mode display method is applied. There is a problem that can not display the Korean subtitles because it does not match.

Accordingly, the present invention proposes four Korean subtitle display modes of instant subtitles, continuous subtitles, rounded subtitles, and rounded-down subtitles to solve the conventional problems, as well as transmitting corresponding control codes according to the subtitle display modes. It is an object of the present invention to provide a caption mode display apparatus and method for Korean subtitle broadcasting that can improve the readability of a subtitle by displaying the subtitle consistent with an image by editing the corresponding subtitle display method as read by the receiving side.

That is, according to the present invention, four modes of instant caption, up-close caption, down-caption caption, and continuous caption are displayed according to a control code when receiving Korean caption broadcasting.

1 is a block diagram of a system for transmitting closed caption broadcasting of the present invention.

2 is a functional block diagram of a system for caption broadcasting reception of the present invention.

3 is a block diagram of a caption signal receiver according to an embodiment of the present invention;

4 is an overall signal flow diagram for an embodiment of the present invention.

FIG. 5 is a signal flow diagram for instant caption display in FIG. 4; FIG.

FIG. 6 is a signal flow diagram for continuous caption display in FIG. 4; FIG.

FIG. 7 is a signal flow diagram for displaying up / down subtitles in FIG. 4; FIG.

8 is a block diagram of the actual circuit configuration of FIG.

Explanation of symbols on the main parts of the drawings

101: video editing unit 102: caption mode selection unit

103: subtitle editing unit 104,114: video synthesis unit

105: video / audio synthesizer 106: voice editing unit

107: transmitting unit 111: video signal receiving unit

112: image processing unit 113: caption signal receiving unit

115: display unit 116: audio signal receiving unit

117: voice processing unit 118: speaker

121: Korean subtitle code receiver 122: Subtitle display selector

123: Subtitle Editor 124: Subtitle Indicator

810: Microcomputer 811: Property Register

820: Memory block 821,823: Control code memory

822,824: character code memory

In accordance with an aspect of the present invention, there is provided an apparatus for receiving a caption broadcast and editing the caption in accordance with a control code for the caption in the caption signal receiver, wherein the caption signal receiver is a Korean caption code in the received video signal. A subtitle display receiver for separating and receiving a subtitle, a subtitle display selector for determining a subtitle display mode according to the subtitle code, and for decoding a character code and a control code corresponding to the mode; And a caption editor for editing the control code, and a caption display for outputting the edited character code and control code to the image synthesizer.

In addition, in order to achieve the above object, the present invention provides a method for displaying a subtitle with a video by receiving a Korean subtitle broadcast, the method comprising: detecting the presence or absence of a Korean subtitle code in a received video signal; Detecting a corresponding mode among the four modes of instant caption, continuous caption, round caption, and round caption, decoding the control code and the character code according to the read mode; And editing and displaying the character code appropriately for the mode.

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

The block diagram of the transmitting side and the receiving side for the implementation of the present invention is made the same as shown in Figs.

Fig. 1 is a block diagram of a transmitting apparatus, as shown therein, an image editing unit 101 for editing a captured image in a predetermined format, a caption mode selecting unit 102 for selecting a caption display mode, and the caption mode selection. A subtitle editing unit 103 for outputting a predetermined control code according to the display mode selection of the unit 102, and a control code output from the subtitle editing unit 103 to a video signal output from the image editing unit 101; An image synthesizing unit 104, an audio editing unit 106 for editing a voice synchronized with the image output from the image editing unit 101 into a predetermined format, an audio signal and the image synthesizing unit from the audio editing unit 106; A video / audio synthesizing section 105 for synthesizing the video signal at 104 and a transmitter 107 for transmitting the output signal of the video / audio synthesizing section 105 via an antenna.

2 is a block diagram of a receiving apparatus, and as shown therein, a video signal receiver 111 that separates a video signal from a broadcast signal received by an antenna, and separates only a video signal from an output signal of the video signal receiver 111. The image processing unit 112 to process, the caption signal receiving unit 113 for separating and decoding only the caption signal among the output signals of the video signal receiving unit 111, and the caption data from the caption signal receiving unit 113 to the image processing unit ( A video synthesizing unit 114 for synthesizing the video data at 112, a display unit 115 for receiving an output signal from the video synthesizing unit 114 and displaying images and captions on a screen, and a broadcast signal received through an antenna; The voice signal receiver 116 which separates a voice signal from the voice signal, and the voice signal processor 117 which decodes the output signal from the voice signal receiver 116 into original voice data and outputs it to the speaker 118.

As shown in the block diagram of FIG. 3, the caption signal receiver 113 according to an exemplary embodiment of the present invention separates and receives a Hangul subtitle signal among video signals received from the video signal receiver 111 ( 121) and a caption display selector 122 that determines a caption display mode according to the Hangul subtitle signal and decodes a character code and a control code corresponding to the mode, and stores a character code in accordance with the caption display mode and stores a control code. A caption editor 123 to be edited by using a subtitle editor 123, and a caption display 124 which is modulated according to the video signal with the character code and control code edited above and output to the video synthesizing unit 114.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

First, the caption display mode delivery operation of the transmitting side will be described.

When the caption is inserted when the captured image is edited in the predetermined format by the image editing unit 101 and the voice synchronized with the image is edited in the predetermined format to produce a broadcast program, the caption mode selection unit ( In step 102, one of four modes of instant caption, continuous caption, round caption, and round caption is selected.

At this time, the subtitle editing unit 103 outputs a predetermined control code according to the display mode selection of the subtitle mode selecting unit 102, and the image synthesizing unit 104 applies the control code to the image signal output from the image editing unit 101. The synthesizer is output to the video / audio synthesizer 105.

Accordingly, when the video / audio synthesis unit 105 synthesizes the audio signal from the audio editing unit 106 and the video signal from the video synthesis unit 104, the transmitter 107 transmits the synthesized signal through the antenna. Done.

Subsequently, a caption display operation of a receiver that receives a broadcast signal including a caption signal transmitted through the above operation will be described as follows.

When the antenna receives the broadcast signal, the video signal receiver 111 separates the video signal including the subtitle signal, and the audio signal receiver 116 separates the audio signal.

At this time, the image processing unit 112 separates only the video signal from the output signal of the video signal receiving unit 111 and decodes the original video signal, and the subtitle signal receiving unit 113 separates only the subtitle signal and the control code of the corresponding subtitle display mode. The character code is decoded.

Accordingly, when the image synthesizing unit 114 synthesizes the character code and the control code of the caption signal receiving unit 113 to the corresponding position of the image data in the image processing unit 112 and transmits the image code to the display unit 115, the display unit 115. ) Will display video and subtitles on the screen.

In addition, when the receiving side displays the image and the caption by the above operation, the audio processing unit 117 decodes the output signal from the audio signal receiving unit 116 into the original audio data and outputs it to the speaker 118.

Accordingly, by performing the above-described operation, an image is displayed on the screen of the display unit 115 and an audio signal synchronized with the image is output to the speaker 118, and then an audio signal is displayed on the screen of the display unit 115. Synchronized subtitles are displayed.

On the other hand, when the caption display mode is determined by displaying the caption display mode as described above, the caption signal receiving unit 113 as shown in FIG. 3 performs the process as shown in FIG. 4, and the operation according to each mode is shown in FIGS. It is performed in the same process as the signal flowchart.

Referring to the operation of the caption signal receiving unit 113 in the same process as in Figure 4 as follows.

First, when the Korean subtitle code receiver 121 separates and receives a Korean subtitle code from the image signal of the image signal receiving unit 111, the subtitle display selector 122 performs the instantaneous subtitles, the continuous subtitles, the uploaded subtitles, The corresponding data (= control code + character code) is decoded and outputted to the subtitle editor 123 by determining the corresponding mode among the four subtitle display modes of the subtitle.

At this time, the subtitle editor 123 temporarily edits the character code + control code of the subtitle display selector 122 in the non-display memory or the display memory to fit the subtitle display mode, and then subtitles the character code and the control code. It outputs to the display unit 124.

Accordingly, the caption display unit 124 modulates the character code and the control code edited by the caption editor 123 according to the corresponding signal and outputs the modulated signal to the image synthesizer 114.

Accordingly, the caption code and the control code are combined with the image data through the image synthesizing unit 114 and output to the display unit 115 to display the image and the caption on the screen.

In the above operation, the process for displaying the instant caption is the same as the signal flowchart of FIG. 5.

Here, the display memory is a memory for storing caption information currently displayed on the screen, and the non-display memory is a memory for temporarily storing caption information to be displayed next.

First, the Korean subtitle code receiver 121 separates the received Korean subtitle code from the output signal of the image signal receiving unit 111 and decodes the received Korean subtitle code in the subtitle display selector 122 (= instant subtitle start command). Is output to the subtitle editor 123.

At this time, the subtitle editor 123 inputs the data (= character code + control) that is input after the moment subtitle start command from the moment when the moment subtitle start command is input in the subtitle display selector 122 until the moment command is displayed. Code) is stored in the non-display memory, and when the instant caption start command is input, the non-display memory is erased and then the control code and the character code are decoded and stored.

Subsequently, when a display instruction of the instant caption is input, the caption editor 123 converts the non-display memory into the display memory and outputs data stored in the converted display memory to the caption display 124.

Accordingly, the caption display 124 outputs the data output from the caption editor 123 to the image synthesizing unit 114 to display the instant caption.

Accordingly, the caption is displayed while the image is displayed on the screen of the display unit 115.

In the above description, the subtitle editor 123 converts the non-display memory into the display memory and converts the previous display memory into the non-display memory at the time of outputting the stored data to the image synthesizing unit 114 to repeat the process as shown in FIG. 5. The data in the subtitle display selector 122 is stored.

The process for displaying continuous captions is the same as the signal flow diagram of FIG. 6, which will be described below.

First, the Korean subtitle code receiver 121 separates the received Korean subtitle code from the output signal of the video signal receiver 111 and decodes the received Korean subtitle code in the subtitle display selector 122 to control the continuous subtitle mode (= continuous subtitle start command). Is output to the subtitle editor 123.

At this time, the subtitle editor 123 stores the data (= character code + control code) input after the continuous subtitle start command in the display memory from the moment when the subtitle start selector 122 inputs the start command of the continuous subtitle. Immediately output to the subtitle editor 123.

Accordingly, in order to display the continuous captions, the caption displayer 124 outputs the data output from the caption editor 123 to the image synthesizing unit 114 so that the continuous captions are displayed while the image is displayed on the screen of the display 115.

That is, in the case of continuous caption display, data input immediately after receiving the continuous caption start command are immediately stored in the display memory and displayed on the screen.

In addition, the process for displaying the up or down subtitles is the same as the signal flow diagram of FIG. 7, which will be described below.

Here, the case of rounding subtitles will be described by way of example.

First, the Korean subtitle code receiver 121 separates the received Korean subtitle code from the output signal of the video signal receiver 111 and decodes the received Korean subtitle code in the subtitle display selector 122 (= a subtitle start command). Is output to the subtitle editor 123.

At this time, the subtitle editor 123 sets the window according to a command for designating a base line and a column position input following the start command of the subtitle in the subtitle display selector 122 and subsequently inputs the data (character code + control code). Is stored in the display memory and output to the image synthesizing unit 114.

In the above description, the window for displaying the subtitles is set up to a column designated in an upward direction of the screen based on the basic line.

Subsequently, when a line break command is input, the subtitle editor 123 stores the data input from the subtitle display selector 122 in the position of the basic row while moving and storing the data stored in the display memory to the position of the next column.

The operation of storing data in the display memory is repeatedly performed whenever a line break command is input.

Therefore, the subtitle is displayed on the screen of the display unit 115 while moving to the upper part of the screen based on the base line in the window set at the predetermined position.

When the line break command is input and the caption editor 123 moves the data currently stored in the display memory to the next column, the window is displayed on the screen of the display unit 115 by erasing the data corresponding to the top column of the window. The caption in the top row is deleted.

In the above, the erasing of the subtitles can be implemented to disappear by continuously moving to the end of the window.

On the contrary, when the lower subtitle start command is decoded and the lower subtitle display mode is set, the window is set up to a column designated in the lower direction of the screen based on the basic line, and the subtitle is moved downward in the screen.

The subtitle display operation is the same as that of the subtitle display, except that the moving direction of the subtitle is different.

On the other hand, the above-described embodiment of the present invention with respect to the functional block as shown in Figure 3 by way of example, in the actual circuit configuration is configured as shown in the block diagram of FIG.

That is, the microcomputer 810 performs hardware or software operations in the subtitle display selector 122 and the subtitle editor 123, and operates the display memory or the non-display memory outside the microcomputer 810. The memory block 820 is equipped with an attribute register 811 for storing the attribute of the subtitle to be currently displayed, the attribute of the display memory and the non-display memory, in the microcomputer 810.

The memory block 820 may be divided into a control code memory 821 and 823 and a character code memory 822 and 824.

Here, the control code memory and the character code memory 821,822 (823,824) constitute one memory, for example, in the case of the instant caption display mode, the attribute is alternately switched between the display memory and the non-display memory, and the subtitles or roundings are made. In the case of subtitle display, the property is fixed to the display memory.

As described in detail above, the present invention can improve the readability of a subtitle by selecting one of four subtitle display methods according to the subtitle display control code and displaying a subtitle matched with an image in displaying the subtitle in a corresponding mode. It works.

Claims (8)

An apparatus for displaying a corresponding subtitle together with an image according to a subtitle display mode included in a Korean subtitle broadcast signal by a subtitle signal receiver, wherein the subtitle signal receiver separates and receives a Korean subtitle code from a received subtitle broadcast signal. A subtitle display selector for judging a subtitle display mode according to the Korean subtitle code among four subtitle display modes of a subtitle, a continuous subtitle, a continuous subtitle, a round subtitle, and a subtitle, and decoding a character code and a control code corresponding to the mode; And a caption editor for editing a character code and a control code according to the caption display mode, and a caption indicator for outputting the edited character code and control code to an image synthesizer. Device. The subtitle editor of claim 1, wherein the subtitle editor comprises a display memory for storing a character code and a control code of a currently displayed subtitle, and a non-display memory for storing a character code and a control code of a subtitle to be displayed next. Subtitle display control device for Korean subtitle broadcasting. A method of receiving a Korean subtitle broadcast and displaying a corresponding subtitle with an image according to a subtitle display mode, the method comprising: detecting a presence or absence of a Korean subtitle code in a received video signal; A second step of reading the corresponding mode among the four modes of the instant caption, the continuous caption, the round caption, and the down caption; a third step of decoding the control code and the character code according to the mode read above; And a fourth step of editing and displaying the character code appropriately for the mode according to the control code. The method of claim 3, wherein the caption display operation comprises: a first process of determining an input of an instant caption start command or an instant caption display command; a second process of erasing contents of the non-display memory when the start command is input; A third process of decoding data (control code + character code) input after the start command, a fourth process of converting the decoded data into a format for displaying on the screen, and converting the converted data into the A fifth process of storing in the non-display memory, and when the instant caption display command is input, the non-display memory is converted to the display memory to display the subtitles, and the previous display memory is converted to the non-display memory to perform the same process as described above. A subtitle display control method of Korean subtitle broadcasting, characterized by repeatedly performing a sixth process of storing data. The method of claim 3, wherein the continuous caption display operation comprises: a first process of determining an input of a continuous caption start command; and decoding data (control code + character code) input after the start command when the start command is input. A second process, a process of converting the decoded data into a format for displaying on the screen, and a fourth process of storing the converted caption data in a display memory and immediately displaying it on the screen. A subtitle display control method of a Korean subtitle broadcast. The method of claim 3, wherein the display of the rounding subtitle is performed by a first process of determining an input of a rounding subtitle start command or a line break command, and a code input after the command when the start command is input (base line and column information). A second process of decoding a second process, a third process of setting a position of a base line to be displayed on the screen using the information decoded above, and setting a window up to a column designated in an upper direction of the screen based on the base line; A fourth process of decoding data (control code + character code) input after the start command, a fifth process of converting the decoded data into a format for displaying on the screen, and converting the converted data A sixth process of displaying the subtitles on the screen by storing them in the display memory; and moving the data stored in the display memory to an area of the next column when the line break command is input. Chapter Hangul method subtitle display control of the closed captioning feature according to claim 7 for carrying out the repeated step of displaying the subtitles on the screen the next column. 7. The method for controlling subtitle display of Korean subtitle broadcasting according to claim 6, wherein the subtitle displayed in the top column of the window is erased by erasing the subtitle from the area of the display memory when a line break command is input. 4. The method of claim 3, wherein the display of the subtitles is performed by setting a window to a designated column in a downward direction of the screen with respect to the base line and performing the same process as the display of the subtitles. .