KR100818926B1 - Apparatus and method for handling presentation graphic of optical disk - Google Patents

Abstract

An apparatus and a method for handling presentation graphic of an optical disk are provided to display a multi-language caption by installing a PG synthesizing part for synthesizing the display data into a PG stream. An apparatus for handling presentation graphic of an optical disk comprises a PG(presentation graphic) detecting part(410), a synchronizing part(420), and a PG synthesizing part(440). The PG detecting part detects whether or not PG data included in each PG stream is text PG data. The synchronizing part synchronizes the sizes of the text area and PG area of the text PG data according to the result of detection. The PG synthesizing part synthesizes predetermined display data set up by a user with the text PG data according to the result of synchronization into a PG stream to be displayed. A display data setting part(430) sets up the display method for a caption by using a caption display point and retention time set up by a user.

Description

Apparatus and method for handling presentation graphic of optical disk}

1 shows a presentation graphics processing apparatus of an optical disc according to the prior art.

2 illustrates a presentation graphics process according to the prior art.

3 illustrates a presentation graphics processing apparatus of an optical disc according to an embodiment of the present invention.

4 is a diagram illustrating a multi-presentation processor according to an embodiment of the present invention.

5 is a presentation graphics processing flow diagram in accordance with an embodiment of the present invention.

6 is a diagram illustrating a multilingual display screen according to an embodiment of the present invention.

7 is a diagram illustrating a caption display method according to an embodiment of the present invention.

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

300: optical disc player 310: buffer

320: decoder 330: multi PG processor

340: Video Multiplexer 350: Digital TV

360: communication unit 370: storage unit

380: control unit 390: display unit

The present invention relates to an apparatus and a method for processing presentation graphics of an optical disc, and more particularly, to include a plurality of PG processors in optical disc reproduction for Blu-ray and HD-DVD. Multi-PG processor determines text PG data in each PG processor to synchronize text area and PG area, and applies user-specific display information to synthesize PG data processed in each PG processor. An apparatus and method for presenting graphics processing of an optical disc for displaying and displaying subtitles of user settings.

Unlike DVD, the Blu-ray format uses a 405 nm wavelength blue-violet laser to achieve a small beam spot size with a numerical aperture (NA) of 0.85. It can store 27GB of data capacity (50GB for dual layer), and can store 2 hours of 1080i (1920x1080 pixels) HD video and 16 hours of standard TV video (3.8Mbps).

This Blu-ray is a compression method based on MPEG2 based MPEG2 Transport Stream, and its data bit rate of 36Mbps enables recording of HD broadcasts directly from digital cameras or broadcasts without any loss of audio / video quality. Do. In addition, HD video can be recorded directly from a digital video camera.

Such Blu-rays and HD-DVDs include caption data in a presentation graphic (hereinafter referred to as PG) for transmission of captions. The PG is graphic data that is run-length coded, and is decoded at an appropriate time point on the basis of preset information and displayed on the screen.

1 is a view showing a presentation graphics processing apparatus of an optical disk according to the prior art.

An apparatus for processing graphics of an optical disc according to the prior art includes an optical disc player for Blu-ray and HD-DVD including a buffer 100, a decoder 125, and a video multiplexer 150, and data reproduced by the player. Is provided to the digital TV 145 and the corresponding data is displayed.

First, the buffer 100 is referred to as an IG (Interactive Graphic, IG) stream buffer including information related to a menu, and a PG (Presentation Graphic, hereinafter PG) used for subtitles with all graphic data except IG. A PG stream buffer 110 for storing the text data, a text subtitle stream buffer 115 including text data and text style data, and video data compressed with MPEG-2, H.264, and VC1. And a video stream buffer 120.

The decoder 125 for decoding data stored in the buffer 100 includes an IG decoder 130, a PG decoder 135, and a text subtitle decoder 140. And a video decoder 145.

The IG decoder 130 may decode graphic data changed by a user, such as a menu, and output or disappear appropriately in units of video frames, and may be played in association with video. Graphics processed with IG are used for menu navigation icons and buttons.

The PG decoder 135 decodes and displays PG data, and is mainly used for subtitles with all graphic data except IG, but also used for animation processing.

The IG and PG are based on graphic objects, and support animation effects such as scrolling, wiping, cut, fading, and color change.

The text subtitle decoder 140 generates caption data using text data and text style data.

The video decoder 145 decrypts data encrypted by a compression scheme such as MPEG-2, H.264, VC1, or the like.

The video multiplexer 150 includes an IG plane 155, a PG plane 160, and a video plane 165, and the IG and PG planes 155 and 160 are composed of 8-bit pixels and pallet data.

These three planes are mixed over the video data and displayed through the digital TV 170 provided by the user. The dual PG plane 160 receives the synthesized data of the PG decoder 135 and the text subtitle decoder 140 as input.

IG and PG data have an alpha value of 256 bits, allowing you to adjust the transparency of the data blended with the video.

2 illustrates a presentation graphics process according to the prior art.

Presentation graphics processing according to the prior art processes the presentation graphics in a manner corresponding to the information by means of preset information.

As shown, the data provided to the digital TV 170 is displayed by synthesizing the video stream 200 and the PG stream 210 displaying the subtitles. The video stream 200 and the corresponding PG stream 210 are displayed. The display is synchronized with the preset time, subtitle position and color.

As such, the subtitle display using PG in the conventional Blu-ray and HD-DVD player can display only one subtitle language at a time, and the information set by the author, for example, the subtitle display time and method, There was a problem that user settings for subtitles could not be made if they could not adapt to color.

The present invention has been devised to improve the above-mentioned problem. More specifically, after determining and synchronizing text PG data for a plurality of PG streams according to a user setting, the PG data is synthesized by applying display information of the user setting. The present invention relates to a presentation graphics processing apparatus and method for an optical disc for displaying a subtitle and providing a subtitle displayed according to the display time and method of the subtitle.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

An apparatus for processing a presentation graphic of an optical disc according to an embodiment of the present invention includes a PG determination unit that determines whether PG data included in each of at least one inputted graphics stream is text PG data, and a PG area of the text PG data according to the determination result. And a PG synthesizer for synthesizing the size of the text area and synthesizing the PG data into displayable PG streams by applying display information of a predetermined user setting to text PG data according to the synchronization result.

According to an embodiment of the present invention, there is provided a method of processing a presentation graphic of an optical disc by determining text PG data in a presentation graphics stream input according to a user selection, synchronizing text PG data according to the determination result, and synchronizing through the synchronization. Synthesizing PG data to which display information is applied into a displayable PG stream and displaying the synthesized PG stream according to a user setting.

Specific details of other embodiments are included in the detailed description and the drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, only the embodiments are to make the disclosure of the present invention complete, the general knowledge in the art to which the present invention belongs It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

3 is a diagram illustrating a presentation graphics processing apparatus of an optical disk according to an embodiment of the present invention.

An apparatus for processing presentation graphics of an optical disc according to an embodiment of the present invention may include an optical disc player 300 for Blu-ray and HD-DVD and a digital TV 350 for displaying a PG stream transmitted through the player. have.

As shown, the optical disc player 300 may include a buffer 310, a decoder 320, a multi PG processor 330, and a video multiplexer 340.

Since the buffer 310, the decoder 320, and the multiplexer 340 may be the same as or similar to those of the prior art, the detailed description thereof will be omitted.

The multi-PG processor 300 may be configured between the decoder 320 and the video multiplexer 340. When the PG stream corresponding to the subtitle language selected by the user is input, the multi-PG processor 300 processes the PG stream according to a user setting. to be. For example, when the user selects a subtitle language for bilingual display (multilingual display), a PG stream corresponding to the multilingual display is input, and each PG is extracted through synchronization and extraction of text PG data from the input PG stream. Sets display information of user settings for data. The PG data for which display information is set may be stored in a temporary storage unit (not shown) in the optical disk player 300 or provided to the digital TV 350 and stored.

The PG data, which may be stored in the temporary storage unit, is synthesized into a PG stream for multilingual display and provided to the digital TV 350, and the synthesized PG stream is displayed.

The multi-PG processor 330 performing this function will be described in detail with reference to FIG. 4 to be described later.

Next, the digital TV 350 provided by the user may include a communication unit 360, a storage unit 370, a control unit 380, and a display unit 390, and may include a predetermined input device such as a remote controller (not shown). May be further included. Although the input device may transmit information for displaying subtitles to the optical disc player 300 through the digital TV 350 or directly provide the information to the optical disc player 300, in the embodiment of the present invention, It is assumed that the data is transmitted to the optical disc player 300 through the communication unit 360.

As described above, the communication unit 360 of the digital TV 350 transmits a predetermined command input by the user to set the caption display, and receives a PG stream processed according to the command.

The storage unit 370 may store a PG stream processed by the multi-PG processor 330, and may store user setting information for displaying a subtitle. Here, the user setting information means user setting information only for the caption display. That is, when a plurality of users use the corresponding devices, the caption display for each user may be differently provided.

The control unit 380 stores the PG stream received through the communication unit 360 in the storage unit 370 or provides the display unit 390 to be processed according to user setting information.

The display unit 390 displays the PG stream processed by the multi-PG processor 330. The display unit 390 displays the PG stream in a multilingual simultaneous display, a caption display time and method according to a user setting.

Multilingual simultaneous display and subtitle display time and display method will be described in detail with reference to FIGS. 6 and 7 to be described later.

In the presentation graphic processing apparatus for the optical disc including such a component, the disc player 300 and the digital TV 350 may be separately configured as shown, and the optical disc player 300 is connected to the digital TV 350. It can also be built in.

4 is a diagram illustrating a multi-presentation graphics processor according to an embodiment of the present invention.

The multi-presentation graphic processor according to an embodiment of the present invention may include a plurality of PG processors and a PG synthesizer for processing a plurality of subtitle languages input to the processor.

As shown, the multi-PG processor 330 may include a PG processor 400 and a PG synthesizer 440.

First, the PG processor 400 may be configured with at least one in the multi-PG processor 330 according to the processing method of the input PG stream.

For example, when one PG processor 400 is configured to process at least one or more PG streams inputted by time division, a plurality of PG streams input to the PG processor 400 are processed at predetermined intervals.

As described above, when one or more PG streams are processed by one PG processor 400, the PG streams processed first are stored in the storage unit (not shown) or the buffer 310 of the optical disc player 300 and then processed. It is intended to provide a synthesis at the same time as the PG stream.

On the other hand, when processing a plurality of PG streams using at least two PG processor 400, if there are two input PG streams, each PG stream is processed simultaneously and stored in the temporary storage unit or buffer 310 or It is synthesized and provided to the digital TV 350.

The PG processor 400 may include a PG determiner 410, a synchronizer 420, and a display information setter 430 that determine a data type of an input PG stream.

The PG determination unit 410 determines the text PG data from the input PG stream. Determining the text PG data is to determine the text PG data related to the caption since the input PG data may include animation information and graphic PG data.

When the text PG data related to the caption is determined, the synchronization unit 420 performs synchronization to match the size of the PG area and the text area in the text PG data.

Synchronization of the PG area and the text area is achieved by matching the PG area with the text area by calculating the size of the text area from the text PG data and extracting only the text area.

When synchronization is performed through the synchronization unit 420, the display information setting unit 430 sets the text PG data to be synchronized using the display information set by the user. When setting display information, the display information according to user setting, for example, the subtitle display method and display time such as subtitle color, alpha value, and animation effect, as well as pre-applied (copyright setting) alpha which may cause difficulty in user identification. Value and animation information is included.

The display information of the user setting may apply different display information to each of the synchronized text PG data.

For example, if a user wants to display English and Korean in multiple languages, the user can apply different subtitle colors (display information) for English and Korean. In this case, the remaining display information except for the subtitle color to be applied may be the same as English and Korean.

The caption display method and display time will be described in detail later with reference to FIGS. 6 and 7.

The PG data processed by the PG processor 400 and stored in the storage unit are synthesized by the PG synthesizing unit 440 to generate new PG data for multilingual display.

In other words, the multi-PG processor 330 according to an embodiment of the present invention extracts and synchronizes text PG data from PG data input according to a user setting, sets display information, and sets different PG data into one PG. The synthesized stream is transmitted to the digital TV 350 to display the corresponding PG stream.

5 is a flow chart of a presentation graphic display in accordance with an embodiment of the present invention.

The presentation graphic display of the optical disc according to the embodiment of the present invention is transmitted and displayed on the digital TV by synthesizing the processed PG data when the PG stream input according to the user setting is processed according to the user setting.

First, when a user inputs user setting information through a predetermined input device, the information is determined (S500). The determination of the user input information is to determine whether the corresponding input information is information for multilingual display or change information on the currently displayed subtitle.

If the user input information is information for multilingual display, the user selects a subtitle language for multilingual subtitle display (S510).

When a predetermined number of subtitle languages are selected by the user (S510), a PG stream corresponding to the number of selected subtitles is input to the multi-PG processor 330.

A predetermined number of PG streams input to the multi-PG processor 330 are determined by the PG determination unit 410 of the PG processor 400 (S520).

If the text PG data is determined in the input PG stream (S520), the corresponding data is provided to the synchronization unit 420 to synchronize the text area with the size of the PG area (S530).

When the text PG data is synchronized (S530), the display information is set for synthesizing the synchronized PG data (S540).

In this case, the display information setting is for synthesizing the synchronized PG data, and is to facilitate user identification of the synthesized PG stream (subtitle) by removing alpha values and animation information.

The text PG data in which the display information is set is stored in the temporary storage unit or the buffer 310 of the optical disc player 300, and there is previously stored text PG data through the foregoing process (at the time division processing of the PG processor 400). Is synthesized into previously stored text PG data and a new PG stream displayed in multiple languages (S550).

The PG data stored in the temporary storage unit or the buffer 310 may be stored according to the PG data processing method of the PG processor 400.

Since it is mentioned in FIG. 4 described above, detailed description thereof will be omitted.

As described above, in the case where the optical disc player 300 is a read-only device, the PG data is to reduce the trouble of setting the multilingual display and the subtitle display information every time a disc is played. A PG stream in which multilingual display and subtitle display information for each user to be processed is set is stored.

That is, the PG data synthesized through the above process are synthesized subtitle languages selected by the user, and the corresponding data is transmitted to the digital TV 370 and displayed (S560).

Meanwhile, when it is determined as a user input for changing display information in the user input determination step (S500), the caption display time and display method may be changed through the display information setting unit S540.

The display setting in the display information setting unit 430 will be described in detail later with reference to FIG. 7.

The PG data in which the display information is set by the user is synthesized into a PG stream in which the display information of the user setting is set through the PG data synthesizing step (S550), and transmitted to the digital TV 370 of the user to change the display information. To display (S560).

6 is a diagram illustrating a multilingual display screen according to an exemplary embodiment of the present invention.

The multilingual display according to an exemplary embodiment of the present invention shows that two languages are synthesized and displayed through a multi-PG processor when two or more subtitle languages are selected by a user.

As shown, the display screen allows synchronization of the PG area 610 and the text area 620 in a PG stream (not shown) that includes the video stream 600, the PG area 610, and the text area 620. It is shown.

Synchronization of these areas is performed by calculating the size of the text area 620 in the PG area 610 of the text PG data determined in the PG stream associated with the subtitle, which may be authored differently according to the copyright holder. The size of the PG region 610 is matched.

Next, in the case of the multi-language subtitle display, the subtitle languages selected by the user are Korean and English, and the PG stream including the Korean and English is input to the multi-PG processor and the two languages are synthesized and displayed. Since the synthesis process has been described above with reference to FIGS. 4 and 5, a detailed description thereof will be omitted.

The PG streams 640 and 650 synthesized and displayed by the multi-PG processor 330 may be displayed by applying the position, color, alpha value, and animation effect of the subtitle according to the user display setting.

The multi-language subtitles displayed in this way are stored in the buffer or the storage unit when the multi-language PG stream is generated in the optical disc player 300, and when the disc is re-executed, the multi-language subtitles do not go through the multi-PG processor when the user requests the multi-language display. Can be displayed. This can be displayed in accordance with the pre-stored multilingual subtitles by storing predetermined information on the optical disc to be reproduced.

7 is a diagram illustrating a caption display method according to an embodiment of the present invention.

Subtitle display method according to an embodiment of the present invention may be different according to the user settings.

First, the caption display method according to an embodiment of the present invention may be displayed differently according to the display time of the PG stream and the video stream and the time for which the PG stream is maintained.

The caption display method is not limited thereto, and a combination thereof or a method derived therefrom may be further included.

As shown, when the display time of the video stream 700 is t0 and the display time of the corresponding PG stream 710 is the same as t0, the user can read the subtitle without much effort. This applies not only to the display time but also to the case where the display holding time is the same.

On the other hand, if the user is not familiar with the currently displayed subtitles and feels that the displayed subtitles holding time is short, the holding time of the subtitles can be increased. For example, when the video stream 700 of t0 is changed to the video stream 720 of t1, the display time of the PG stream 710 of t0 is maintained in the PG stream 730 and the video stream 720 maintained up to t1. The PG stream 740 displayed at the corresponding time point may be simultaneously displayed in two lines.

In this case, the sizes of the PG streams 730 and 740 displayed at the time t1 may be displayed smaller in the case of the PG stream 730 at the time t0, and the PG stream 740 at the time t1 may be displayed larger.

In addition, when the PG stream 760 displayed at a time point corresponding to the video stream 750 and the PG stream 770 which may be displayed at a next time point are displayed in two lines, the PG stream 760 may be displayed to be scrolled. It may be.

According to the presentation graphics processing apparatus and method of the optical disk of the present invention as described above, the effect of the present invention can display a multi-language subtitle corresponding to the language selected by the user, and the display time and method of the subtitle displayed in the multi-language. Can be changed to user settings. In addition, by storing the subtitles before and after synthesis, it is possible to use a subtitle in which user-specific setting information is stored.

Claims (5)

A PG determination unit that determines whether PG data included in each of the at least one inputted graphic stream is text PG data; A synchronization unit for synchronizing the size of the text area with the PG area of the text PG data according to the determination result; And And a PG synthesizing unit configured to apply display information of a predetermined user setting to text PG data according to the synchronization result and to synthesize the display PG stream into a displayable PG stream. The method of claim 1, And a display information setting unit for setting a display method of the subtitles using a user-set subtitle display time and a retention time. The method of claim 1, And the PG synthesizing unit synthesizes the at least one text PG data into displayable PG streams by applying display information of different user settings. Determining whether PG data included in each of the at least one inputted graphic stream is text PG data; Synchronizing a size of a PG area and a text area of the text PG data according to the determination result; And And applying the display information of a predetermined user setting to the text PG data according to the synchronization result and synthesizing it into a displayable PG stream. The method of claim 4, wherein And setting a display method of the subtitles by using the user-set subtitle display time and holding time.

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