KR20070028651A - Display apparatus and method for displaying caption thereof - Google Patents

Abstract

A video display device and a caption display method thereof are provided to enable a user to sufficiently read captions even when a person on video speaks fast and there are many captions to be displayed. Caption display information set is searched in advance if caption data is detected from received broadcasting information(S130). The detected caption data is stored as text data in a separate memory(S150). Current caption data of the broadcasting information or previous caption data thereof including the current caption data is sequentially displayed in one or more lines in accordance with the caption display information(S160). The caption display information includes character fonts, caption size, caption location, caption content and the number of caption lines.

Description

Display apparatus and method for displaying captions thereof

1 is a view for explaining a subtitle display method in the TV according to the prior art

2 is a block diagram illustrating a video display device according to the present invention.

3 is a view for explaining a subtitle display method in a video display device according to a first embodiment of the present invention;

4 is a view for explaining a subtitle display method in a video display device according to a second embodiment of the present invention;

5 is a flowchart for explaining a method of setting a caption line in an image display device according to the present invention.

6 and 7 are flowcharts illustrating a method for displaying captions in an image display device according to the present invention.

* Explanation of symbols for main parts of drawings *

Decoder 100 Decoder 200 Image processor

300: display unit 400: microcomputer

500 control unit 600 memory unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device, and more particularly, to an image display device and a subtitle display method thereof, by which a user can separately set the number of subtitle lines displayed on the image display device.

Currently, most TVs have a caption function. When watching a broadcast program including caption data, captions such as English / Japanese / French… can be selected according to the viewer's preference.

Caption means 'caption', which automatically detects caption signals such as TV programs or video tapes to which caption signals (subtitles) are input, and displays the dialogue of the program as English subtitles on the TV screen.

The caption is inserted into the 21st line of the Even Field of the CVBS (Composite Video Blanking Signal) including the text information synchronized with voice, that is, the vertical blanking interval of the composite video signal.

Accordingly, the conventional video display device, ie, the TV, extracts the caption information and outputs the caption information on one side of the screen, for example, at the bottom of the screen, in synchronization with the current screen display image according to the user's caption 'on / off' selection.

The caption is mainly composed of information for data broadcasting or subtitle information of various languages corresponding to the current screen display image, and may be selectively used by the user depending on which languages are provided by the broadcasting station.

Hereinafter, a caption display method in a TV according to the prior art will be described with reference to the accompanying drawings.

1 is a view for explaining a subtitle display method in the TV according to the prior art.

In the TV 10 according to the related art, one line is displayed at one side of the display unit 11, for example, at the bottom of the screen, as shown in FIG. 1.

Such subtitle information is displayed in accordance with an image played by a playback device such as a VCR or DVD, or displays subtitle information provided separately from broadcast information such as news.

In this case, the video is matched to the screen, so if the speaker of the screen speaks quickly, it is displayed quickly and disappears before the next dialogue or the next content is displayed.

Therefore, in the subtitle display method of the TV according to the prior art, since the subtitles (captions) are displayed line by line of the screen, when the speaker speaks quickly, the contents disappear before even reading the contents, especially when a foreign language is translated. There was a problem that you do not know what the contents.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to enable a user to separately set the number of subtitle lines displayed on a video display device, and to improve user convenience. It is to provide a display method.

Another object of the present invention is to provide a video display device and a subtitle display method thereof, which enable separate storage of subtitles displayed on the video display device.

In order to achieve the above object, the present invention provides a decoder for decoding an externally transmitted video, audio, and information signal, and scaling to display the decoded video signal on the display unit together with the subtitle information transmitted from the controller. An image processor for displaying an image and / or subtitles processed by the image processor, a slicing subtitle data from the information signal to generate binary data, and storing the subtitle data in a memory unit, and storing the subtitle data A memory and a control signal for reading the caption data from the microcomputer and processing the caption data to be displayed on one or a plurality of lines in the display unit according to preset caption display information. Including a control unit It provides a video display device, characterized by configured.

The memory unit preferably stores the caption information as text information.

Preferably, the caption display information includes a font of font, size, position, content, and number of lines.

In addition, the image processor may be configured to process the image to display not only the caption data corresponding to the current broadcast content but also the caption data of the previous content as the caption data is displayed on the plurality of lines.

In order to achieve the above object, the present invention provides a method for retrieving caption display information that is set when caption data is detected from received broadcast information, and detecting the detected caption data according to the caption display information. A subtitle display method for a video display device comprising the step of sequentially displaying the previous subtitle data including the current subtitle data in one or a plurality of lines.

Here, it is preferable to store the detected subtitle data as text data in a separate memory.

And displaying the subtitle data sequentially in a plurality of lines, when the currently displayed subtitle line among the subtitle data is larger than a subtitle line preset by the user, performing subtitle processing so that the subtitle data is displayed according to the set subtitle line. If it is not large, it is preferable to include the step of deleting the oldest subtitle line and performing a subtitle process so that a newly input subtitle is displayed.

Therefore, according to the present invention, the subtitles of the video display device can be sufficiently read and the subtitles can be stored, so that the stored data can be used separately.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

2 is a block diagram illustrating a video display device according to the present invention, FIG. 3 is a view for explaining a caption display method in the video display device according to the first embodiment of the present invention, and FIG. 2 is a diagram for describing a caption display method of an image display device according to a second embodiment.

The image display device according to the present invention includes a decoder 100, an image processor 200, a display unit 300, a microcomputer 400, a controller 500, and a memory unit 600.

Here, the decoder unit 100 decodes the video, audio, and information signals transmitted from the outside (a broadcasting station, a playback device (VCR, DVD, etc.)).

The image processor 200 scales the decoded image signal to be displayed on the display unit 300 together with the caption information transmitted from the controller 500.

The display 300 displays an image and / or a subtitle processed by the image processor 200.

The microcomputer 400 processes external signals (infrared rays and local keys) or transmits them to the controller 500, slicing subtitle data from broadcast information, generates binary data, and stores the binary data in the memory unit 600. At this time, it is stored as text information.

The control unit 500 controls the image display device as a whole, and reads the caption data from the microcomputer 400 and according to the caption display information (letter font, size, position, content, and number of lines) stored therein. Send to 200. In this case, when the number of lines of subtitles is set to a plurality of lines, the image processing unit 200 may display the set number of lines, thereby displaying subtitle data of the previous content as well as subtitle data corresponding to the current broadcast content. It becomes possible.

At this time, the position information of the subtitles among the subtitle display information may be set at the bottom of the display unit 21 as shown in FIG. 3 or in a separate subtitle display area 23 as shown in FIG. In this case, a plurality of subtitles (first to Nth subtitle data) may be displayed.

5 is a flowchart for explaining a method of setting a caption line in an image display device according to the present invention.

In the method of setting a caption line in an image display device according to the present invention, a menu is selected through a remote control or a local key of the image display device (S10).

Subsequently, a caption line is selected (S20), and the caption line position and the number of lines are determined as shown in Figs. 3 and 4 (S30). At this time, the caption line position can be set to the upper side, the lower side, the left side, the right side, or the left side, the right side (see FIG. 4), the upper side, the lower side, and the like through the on-screen display function similar to the method of displaying a menu. The number of lines may be selected by the user, and the number of lines may be set by allowing the user to input through a numeric key or increase or decrease the number of lines through a volume key or a channel key.

The determined subtitle position and line value are then stored as the subtitle display information (S40).

Such a menu function may be provided by the controller.

6 and 7 are flowcharts illustrating a method for displaying captions in an image display device according to the present invention.

In the caption display method of the video display device according to the present invention, when a broadcast is received (S100), the caption is detected to determine whether there is caption data (S110).

If it is determined that the caption data is not detected (S110), an image is displayed (S120).

However, if the caption data is detected, the set caption display information (location information, line number information, etc.) is searched for (S130).

In operation S140, it is determined whether the caption data is set to be stored.

As a result of the determination (S140), if it is set to store the caption data, the caption is stored in the memory unit (S150).

Subsequently, the subtitle data is sequentially displayed according to the retrieved subtitle display information (S160). At this time, it is determined whether the currently displayed (displayed) subtitle line is larger than the preset subtitle line (S161).

If it is determined that the determination result is not large (S161), the caption processing is performed to be displayed according to the set caption line (S162).

However, if the determination result (S161) is large, the oldest subtitle line is deleted, and the subtitle process is performed to display the newly input subtitle (S163). In addition, a user may increase or decrease the number of subtitle lines through a menu function. In this case, there is no particular problem when increasing, but when decreasing, the latest subtitle information is displayed first. Accordingly, as described above, when the number of subtitle lines is set to a plurality of lines, not only the subtitle data corresponding to the current broadcast content but also the subtitle data of the previous content can be displayed.

Accordingly, the video including the subtitle is displayed (S170).

The above-described video display device of the present invention and its subtitle display method have the following effects.

First, even if the speaker speaks fast or there are many subtitles to be displayed, the subtitle is displayed according to the number of lines set by the user, so that the user can read the subtitles sufficiently to improve user convenience.

Secondly, subtitles can be stored as text and can be used separately.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (7)

A decoder to decode video, audio and information signals transmitted from the outside; An image processor configured to scale the decoded image signal so that the decoded image signal is displayed on the display unit together with the caption information transmitted from the controller; A display unit which displays an image and / or a subtitle processed by the image processor; A microcomputer slicing subtitle data from the information signal to generate binary data and storing the binary data in a memory unit; A memory for storing the caption data; And, And a controller configured to read the caption data from the microcomputer and transmit a control signal to the image processor to process the caption data to be displayed in one or a plurality of lines on the display unit according to preset caption display information. Image display device, characterized in that configured. The method of claim 1, And the memory unit stores the subtitle information as text information. The method of claim 1, The caption display information includes a character font, a size, a position, a content, and the number of lines. The method of claim 1, And the image processing unit displays the caption data in the plurality of lines so as to display not only the caption data corresponding to the current broadcast content but also the caption data of the previous content. Retrieving set caption display information when caption data is detected in the received broadcast information; And sequentially displaying the detected caption data according to the caption display information, either current caption data of the broadcast information or previous caption data including the current caption data in one or a plurality of lines. How to display subtitles on video display equipment. The method of claim 5, And displaying the detected caption data as text data in a separate memory. The method of claim 5, The step of sequentially displaying the caption data in a plurality of lines, If the currently displayed subtitle line among the subtitle data is larger than the subtitle line preset by the user, the subtitle processing is performed so that the subtitle line is displayed according to the set subtitle line. If the subtitle line is not large, the oldest subtitle line is deleted and the newly entered subtitle is deleted. And performing a caption processing so that the caption is displayed.

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