KR100350989B1 - Recording medium on which digital data is recorded, method and apparatus for reproducing data recorded thereon - Google Patents

Abstract

The present invention relates to a recording medium on which digital data is recorded, a reproduction method thereof, and a reproduction device.

According to the present invention, a recording medium includes: menu data for displaying at least one menu; And at least one of audio data and video data, and when a predetermined menu is selected, main data including at least one file to be called and reproduced is recorded. Thereby, a recording medium on which digital data capable of interfacing to D-TV and HDTV is recorded.

Description

Recording medium on which digital data is recorded, method and apparatus for reproducing data recorded thereon}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium on which digital data is recorded, a method of reproducing, and a reproducing apparatus, and more particularly, to a recording medium on which digital data is recorded so as to interface with a digital TV set for receiving digital broadcasting. It relates to a method and a playback apparatus.

Unlike conventional one-way analog broadcasting, digital broadcasting introduces a user selectable data broadcasting service, and employs XML (Extensible Markup Language) grammar as a base technology. In the near future, current analog broadcasts will be replaced by digital broadcasts, and the receivers that users will have will be replaced by D-TV or HDTV.

Digital Versatile Disc (DVD), on the other hand, uses MPEG2 compression technology to provide high-definition and DOLBY DIGITAL 5.1Ch surround sound with a horizontal resolution of 500 pixels per inch (HD) or more, and the same size as a CD. Is one of the optical recording media capable of recording. However, DVD has defined its own data format called sub-picture data that provides various selection functions to the user, such as subtitle conversion and menu functions of movies.

Thus, in order for a DVD to interface with a D-TV or HDTV, the signal output from the DVD must be converted back into a bitstream of a data structure that the D-TV or HDTV can interpret and present. In other words, the decoded video data and the decoded sub-picture data must be superimposed so that complete moving picture data is formed and then encoded into MPEG2 video data. As such, in order to interface DVD to D-TV or HDTV, hardware for re-encoding to MPEG2 video data must be separately provided, and deterioration of image quality due to re-encoding process is caused.

Accordingly, an object of the present invention is to provide a recording medium on which digital data has a data structure capable of being interpreted and presented by a D-TV or HDTV, a reproduction method thereof, and a reproduction device.

1 is a block diagram of a playback apparatus according to a preferred embodiment of the present invention;

2 is a schematic diagram of an optical disc 10 in which data is recorded according to a first embodiment of the present invention;

3 is a relation diagram of the XML menu data 100 and the data file 400 of FIG.

4 is a flowchart for explaining a method of reproducing the optical disc 10 by the reproducing apparatus 1;

5 is a schematic diagram of an optical disc 10 in which data is recorded according to a second embodiment of the present invention;

6 is a relation diagram of the XML menu data 100, the data file 400, and the sub data file 500 of FIG. 5;

7 is a flowchart for explaining a method of reproducing the optical disc 10 by the reproducing apparatus 1;

8 is a schematic diagram of an optical disc 10 in which data is recorded according to a third embodiment of the present invention;

9 is a diagram illustrating a relationship between the XML menu data 100, the mapping information 300, the data file 400, and the sub data file 500 of FIG. 8.

10 is a flowchart for explaining a method of reproducing the optical disc 10 by the reproducing apparatus 1.

* Explanation of symbols for the main parts of the drawings

1: Playback device 10: Optical disc

31: disk drive 32: control unit

33: DSP 41: Audio Decoder

42: video decoder 43: sub data decoder

50: navigation control unit 61: XML engine

62: presentation engine 63: D / A converter

71: speaker 72: monitor

200: user interface 700: D-TV interface

The object is, according to the present invention, menu data for displaying at least one menu; And main data including at least one of audio data and video data, the main data including at least one file to be called and reproduced by a file name when a predetermined menu is selected.

Preferably, the recording medium further includes sub-data including at least one file to be called with a file name and reproduced together with the main data when a predetermined menu is selected.

Preferably, the sub data includes at least one sub text file for displaying text or further includes at least one sub image file for displaying an image.

Preferably, the menu data is recorded in a markup language, and the markup language is a standard generalized markup language (SGML) derived language, and particularly preferably an extensible markup language (XML).

Preferably, the recording medium further records attached data necessary for the menu data to be reproduced.

The attachment data may include font data for setting a font of text included in the menu data, or include a sound data file which is called and inserted by a file name to transmit a sound included in the menu data, or the menu It is preferable to include an image data file which is called and inserted into a file name to display an image included in the data, or include a moving image data file that is called and inserted into a file name to display a moving image included in the menu data.

On the other hand, the object includes at least one menu, menu data recorded in the markup language so that when the menu is selected, a file linked to the selected menu is called by a file name; Main data including at least one of audio data and video data and recorded in at least one file linked to the menu and called by a file name; And mapping information data for mapping an address of a region where corresponding main data is recorded when a file linked to the selected menu is called.

When the predetermined menu is selected, the recording medium preferably further records sub data including at least one file to be reproduced together with the main data by being called with a file name.

Preferably, the sub data includes at least one sub text file for displaying text or further includes at least one sub image file for displaying an image.

The markup language is an SGML derived language, and particularly preferably XML.

In the recording medium, attachment data necessary for displaying the menu data is further recorded, and the attachment data includes font data for setting a font of text included in the menu data or included in the menu data. Includes a sound data file to be inserted by being called by a file name for transmitting sound, or an image data file to be inserted by being called by a file name to display an image included in the menu data, or included in the menu data It is preferable to include a moving picture data file to display the moving picture.

On the other hand, according to another field of the present invention, the above object is to (a) read the menu data recorded in the markup language to display at least one menu, and to interpret the menu data in accordance with the grammar of the markup language to reproduce the menu; step; (b) reading a file linked to the selected menu and called with a file name; And (c) reproducing the read file.

In addition, the object of the present invention comprises the steps of: (a) reading the menu data recorded in the markup language to display at least one menu, and interpreting the menu data according to the grammar of the markup language to reproduce the menu; (b) reading a file which is called with a file name linked to a menu selected from a user among main data including at least one file; (c) read the sub-menu data recorded in the markup language to display at least one sub-menu for selecting the sub data corresponding to the main data, and interpret the sub-menu data according to the grammar of the mark-up language. Playing; (d) reading a file called by a file name linked to a selected submenu among sub data including at least one file; And (e) reproducing the file called in step (b) and step (d).

In addition, the object of the present invention comprises the steps of: (a) reading the menu data recorded in the markup language to display at least one menu, and interpreting the menu data according to the grammar of the markup language to reproduce the menu; (b) reading a file linked to a selected menu of main data including at least one file and called by a file name; (c) playing the read file; (d) during execution of step (c), read sub-menu data recorded in markup language to display at least one sub-menu for selecting sub-data provided to correspond to the main data, and mark-up language Interpreting the submenu according to the grammar of the submenu; (e) reading a file called by a file name linked to a selected submenu among sub data including at least one file; And (f) reproducing the file read in step (e) together with the file of step (c).

In addition, the object may include (a) reproducing a menu by interpreting menu data recorded in a markup language in accordance with a grammar of the markup language to display at least one menu; (b) extracting an address mapped to a file name linked to the selected menu; (c) reading main data located at the extracted address; And (d) reproducing the read main data.

In addition, the object of the present invention includes the steps of: (a) reading menu data recorded in a markup language to display at least one menu, and interpreting the menu data according to the grammar of the markup language to reproduce the menu; (b) extracting an address mapped to a file name linked to the selected menu; (c) reading main data located at the extracted address; (d) reproducing the read main data; (e) reading the sub-menu data recorded in the markup language to display at least one sub-menu for selecting the sub data corresponding to the main data, and interpreting the sub-menu according to the grammar of the markup language. Playing; (f) extracting an address mapped to a file name linked to the selected submenu; (g) reading the sub data located at the extracted address; And (h) reproducing the read sub data together with the main data.

In the step (a), (a1) reading the attached data called by the file name according to the grammar of the markup language to display the menu, and interpreting the read attached data according to the grammar of the markup language. It is preferable that the playback is performed together with the menu data.

The markup language is an SGML derived language, and particularly preferably XML.

On the other hand, according to another field of the present invention, the object includes menu data recorded in markup language for displaying at least one menu from a recording medium, and at least one file linked to a selected menu and called by a file name. Reading means for reading main data to be read; A markup language analysis engine for interpreting the read menu data to be displayed according to the grammar of the markup language; Converting the menu data into a playback signal to be displayed as a menu according to the interpretation of the markup language analysis engine, and converting a file linked to the selected menu and called by a file name into a playback signal. It is also achieved by a playback device.

The reading means is linked to a submenu selected by the user from among submenu data recorded in markup language for displaying at least one submenu for selecting sub data provided to correspond to the main data according to a user's request. Read the submenu data including at least one file called by the filename,

The markup language analysis engine interprets the read submenu data to be displayed according to the grammar of the markup language.

The converting means converts the submenu data into a reproduction signal so that the submenu data is displayed as a submenu according to the interpretation of the markup language analysis engine, and the subdata linked to the selected submenu and called by a file name is reproduced together with the main data. It is preferable to convert to a reproduction signal.

In addition, the purpose is to read the main data located at the address with reference to the mapping information for mapping the file name and the predetermined address linked to the menu among the menu data recorded in the markup language for displaying at least one menu. Reading means for; A markup language analysis engine for interpreting the menu data by interpreting the markup language according to a grammar; And conversion means for converting the main data read out by the reading means into a reproduction signal.

The reading means includes a file name linked to a submenu and a predetermined name among submenu data recorded in markup language for displaying at least one submenu for selecting subdata provided to correspond to the main data according to a user's request. Read the sub data located at the address by referring to the mapping information mapping the address,

The markup language analysis engine interprets the read submenu data to be displayed according to the grammar of the markup language.

The converting means converts the submenu data into a reproduction signal so that the submenu data is displayed as a submenu according to the interpretation of the markup language analysis engine, and the subdata linked to the selected submenu and called by a file name is reproduced together with the main data. It is preferable to convert to a reproduction signal.

The markup language is an SGML derivative language, and is particularly preferably XML. In this case, the markup language analysis engine is preferably an XML engine.

Preferably, the sub data includes at least one sub text file for displaying text or further includes at least one sub image file for displaying an image.

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

1 is a block diagram of a playback apparatus according to a preferred embodiment of the present invention.

Referring to Fig. 1, the playback apparatus 1 is a device for reading out playback data from an optical disk 10, which is a recording medium on which digital data is recorded, and converting the read playback data into a playback signal for playback. ), A monitor 72, and a user interface 200. When a user presses a play button (not shown) provided in the user interface 200, digital data recorded on the optical disc 10 is read and converted into an analog audio signal and an analog video signal, respectively, for the speaker 71 and the monitor 72. Is applied. The speaker 71 reproduces the sound based on the applied audio signal, and the monitor 72 reproduces the image based on the applied video signal.

As described later, the optical disc 10 includes XML menu data, XML submenu data, attached data, video data, audio data, sub data, mapping information, and playback control recorded according to an XML grammar according to an embodiment of the present invention. Information is recorded. The playback control information plays a role equivalent to that of navigation data in the conventional DVD and covers various information necessary for playback. The mapping information is included in the reproduction control information, but since the information is defined according to the present invention, the mapping information is separately illustrated for distinguishing the present invention, which will be described later.

The playback device 1 includes a disc drive 31, a control unit 32, a DSP 33, an audio decoder 41, a video decoder 42, a sub data decoder 43, a navigation control unit 50, and an XML engine. 61, the presentation engine 62, and the D / A converter 63 are further included.

The control unit 32 includes a memory and a microprocessor, not shown. In the memory, a control program for reproducing data desired by a user based on a key input from the user interface 200 is stored, and the microprocessor controls the entire reproducing apparatus 1 by executing the control program.

The disk drive 31 irradiates a laser beam to the optical disk 10 through an optical head (not shown) based on a control signal of the controller 32, converts the reflected laser beam into an electrical signal, and converts the DSP 33 into an electrical signal. ) On the basis of the control signal of the control unit 32, the DSP 33 amplifies, decodes, and error corrects the input electrical signal through an MPEG transport stream parser (not shown) for audio data, video data, sub data, And playback control information (and mapping information). The classified data is provided to the audio decoder 41, the video decoder 42, the sub data decoder 43, and the navigation control unit 5, respectively. The reproduction control information may be input through the control unit 32 separately from the audio data, the video data, and the sub data.

The navigation controller 50 receives playback control information (and mapping information) from the controller 32 or the DSP 33 according to a key input of a user authorized through the user interface 200. In addition, according to the present invention, the navigation controller 50 finds the address of the data requested by the actual user from the mapping information and reproduces the data from the address.

The XML engine 61, which is a markup language analysis engine, receives XML menu data or XML submenu data, analyzes the structure of the XML menu data or XML submenu data, and provides an analysis result to the presentation engine 62.

The presentation engine 62 presents the presentation of the audio data, the video data, and the sub data based on the structure of the XML menu data or the XML submenu data provided from the XML engine 61 and the reproduction control information input from the control unit 61. Specifies the presentation format. More specifically, the type and size of the sub data to be synchronized with the audio data and the video data are identified, and the method of synchronizing them (time reference, frame reference, etc.) is identified. In accordance with the presentation format provided from the presentation engine 62, the D / A converter 63 converts the corresponding reproduction data into an analog signal and outputs it to the speaker 71 or the monitor 72.

On the other hand, since data is recorded in the XML format on the optical disc 10, it can be interfaced to a D-TV or HDTV. When directly interfacing to a D-TV or HDTV, a signal output from the DSP 33 is input to the D-TV interface 700, and audio data, video data, and sub data are synchronized in the presentation engine to transmit MPEG-2. Multiplexed into a stream.

2 is a schematic diagram of an optical disc 10 in which data is recorded according to the first embodiment of the present invention.

Referring to FIG. 2, the optical disc 10 stores the XML menu data 100, the attachment data 200 required for displaying the XML menu data 100, the main data 400, and the reproduction control information 600. Include.

The XML menu data 100 is recorded according to the XML format for displaying the menu. The attachment data 200 displays a font file 201 for displaying the font of the text included in the XML menu data 100, a sound file 202 for transmitting the sound included in the menu, and an image included in the menu. And an image file 202 for displaying a moving image file 204 for displaying a moving image included in a menu. Main data 400 includes an audio data file 401 and / or a video data file 402. Here, the video data file 402 may include audio.

The XML menu data 100 and the attached data 200 are data that do not require synchronization at the time of reproduction, and the reproduction time point varies depending on the time point when the user is called by the user. Main data 400 needs synchronization during playback. In addition, device control data (not shown) is recorded on the optical disc 10 for controlling the playback device 1 of FIG. The device control data is for providing control information necessary for the playback device 1 of FIG. The playback device 1 is operable to play back the content recorded on the optical disc 10 as intended by the recorder according to the control information. For example, the controller 32 determines whether the data file 400 recorded on the optical disc 10 is video data such as a movie or audio data such as classical music through the device control data, and performs control accordingly. do. In addition, the video decoder 42 determines the size of the image to be reproduced and the data rate through the device control data, and performs decoding accordingly.

The XML menu data 100 is prepared to include at least one menu selectable by the user according to the XML grammar. Attachment data 200 is data necessary for displaying a menu, and includes a font file 201 for displaying text included in XML menu data. In addition, the attachment data 200 may include a sound file 202, an image file 203, and a video file 203, which are called with a file name and are inserted when the XML menu data 100 is reproduced. The menu reproduced through the XML menu data 100 and the attached data 200 may be variously implemented as necessary. For example, when a movie is recorded on the optical disc 10, the user may select the beginning, middle, and end portions of the movie so that the user can select and watch a desired part.

EXtensible Markup Language (XML) is a markup language proposed by the World Wide Web Consortium (W3C) in 1996. It provides a standardized text format designed to deliver structured documents. XML is a subset that overcomes the limitations of existing HTML and solves the complexities of SGML. It is a subset of SGML's practical functions. Unlike HTML, users can define new tags. It is a big feature. In addition, since XML enables the interaction with the user through a hyperlink structure, D-TV and HDTV for receiving digital broadcasting support XML.

Therefore, when the user selects a predetermined menu on which the XML menu data 100 is reproduced and displayed, the audio data file 401 and / or the video data file 402 are called by the file name as the main data 400 linked to the menu. Will be played.

3 is a relationship diagram of the XML menu data 100 and the data file 400 of FIG. 2.

Referring to FIG. 3, the menu, which is XML menu data 100. XML includes Menu 1, Menu 2, Menu 3, and Menu 4. Corresponding main data files 400a, 400b, 400c, 400d are linked to each menu. Therefore, when the user selects menu 1, the main data file 400a is called and played by the file name, and when the user selects menu 2, the main data file 400b linked thereto is called and played by the file name. The same holds true for the remaining cases. As such, the user may select and play the desired main data file 400 through the XML menu data 100 created by the XML grammar.

The reproducing method of the optical disc 10 according to the first embodiment of the present invention by the above configuration is as follows.

4 is a flowchart for explaining a method of reproducing the optical disc 10 by the reproducing apparatus 1.

Referring to FIG. 4, when the optical disc 10 is stored in the playback device 1 of FIG. 1, the disc drive 31 reads the device control data from the optical disc 10 and provides it to the controller 32. The control unit 32 initializes the playback device 1 according to the provided control information. Next, the disk drive 31 reads the XML menu data 100 and the corresponding attached data 200 and delivers them to the DSP 33. The XML engine 61 reads the structure of the provided XML menu data 100. The analysis is provided to the presentation engine 62. Accordingly, the menu is displayed on the monitor 72 and / or the speaker 71 by the XML menu data 100 and the corresponding attachment data 200 (step 401).

The user selects a menu through the user interface 200, and the playback apparatus 1 receives menu selection information (step 402).

Receiving the menu selection information, the playback device 1 reads out the main data file 400a, 400b, 400c, or 400d linked to the selected menu from the optical disk 10 (step 403).

Next, the read main data file 400a, 400b, 400c or 400d is reproduced based on the corresponding reproduction control information 600 (step 404). That is, the playback apparatus 1 synchronizes the read data files 400a, 400b, 400c, or 400d based on the playback control information 600, converts them into playback signals, and plays them back.

5 is a schematic diagram of an optical disc 10 in which data is recorded according to a second embodiment of the present invention. However, data logically identical to the first embodiment will be denoted by the same reference numerals, and repeated description thereof will be omitted.

Referring to FIG. 5, the optical disc 10 has attached data corresponding to the XML menu data 100, the XML submenu data 101, the XML menu data 100, and the XML submenu data 101 as reproduction data, respectively. 200, 201, the main data 400 includes an audio data file 401 and / or a video data file 402, a sub data file 500, and playback control information 600. That is, when compared with the optical disc 200 according to the first embodiment shown in FIG. 2, the optical disc 10 according to the second embodiment includes XML submenu data 101, corresponding attachment data 201, And a sub data file 500.

The XML submenu data 101 is created to include at least one submenu selectable by the user according to the XML grammar. The attachment data 201 is data necessary for the XML submenu data 100 to be reproduced to display the submenu, and similar to the corresponding attachment data 100 of the XML menu data 100, the text included in the XML submenu data. Contains a font file for displaying. In addition, the attachment data 201 may include a sound file, an image file, and a video file to be called by a file name and to be inserted upon reproduction of the XML submenu data 100. The submenu reproduced through the XML submenu data 101 and the attached data 201 may be variously implemented as necessary. For example, when a movie is recorded on the optical disc 10, the submenu may be provided with subtitles of various languages through the sub data file 500 so that a user may select a subtitle in a desired language. Here, the XML submenu data 101 may be provided as a plurality of XML document files in order to select various sub data files 500 other than subtitles.

The sub data file 500 is reproduced in synchronization with the audio data file 401 and / or the video data file 402 of the data file 400 as with the sub-picture data in the conventional DVD. The sub data file 500 includes not only the graphic data file but also the text data file and the font file for displaying the text data, unlike the sub-picture data consisting only of the graphic data. When displaying a subtitle with sub data stored in the sub data file 500, the subtitle can be displayed with text data, unlike when displaying subtitles as graphic data, thereby significantly reducing the size of data for the subtitles. have.

6 is a relationship diagram of the XML menu data 100, the XML submenu data 101, the main data file 400, and the sub data file 500 of FIG. 5.

Referring to FIG. 6, a menu, which is XML menu data 100. XML includes menu 1, menu 2, menu 3, and menu 4. Data files 400a, 400b, 400c, and 400d are linked to each menu, respectively, and are called with file names when the corresponding menu is selected. Menu 1 is provided so that submenu.XML which is XML submenu data 101 is corresponded. Similarly, submenu.XML is linked with sub data files 500a, 500b, 500c, and 500d, respectively, and is called with a file name when the corresponding submenu is selected. Therefore, when the user selects menu 1, the main data file 400a is called and played by the file name, and the corresponding XML submenu data 101 according to a user call through the user interface 200 when the data file 400a is played. In submenu. XML can be called with a file name and displayed. When the user selects submenu 1, the corresponding sub data file 500a is called with a file name and reproduced together with or overlapping with the main data file 400a. The same holds true for the remaining cases. As such, the user may call and reproduce the data file and / or the file name of the sub data desired by the user through the XML menu data 100 or the XML sub menu data 101 created by the XML grammar.

For example, when a movie is recorded on the optical disc 10, the user can use any one of Menu 1, Menu 2, Menu 3, and Menu 4 respectively corresponding to a part of the movie contents through the XML menu data 100. By selecting, the linked main data file can be played back. In addition, submenu, which is XML submenu data 101, is played by selecting any one of subtitles provided in a plurality of languages through XML. You can see the subtitles that are superimposed on the movie image.

The reproducing method of the optical disc 10 according to the second embodiment of the present invention by the above configuration is as follows.

7 is a flowchart for explaining a method of reproducing the optical disc 10 by the reproducing apparatus 1.

Referring to FIG. 7, when the optical disc 10 is stored in the playback device 1 of FIG. 1, the disc drive 31 reads the device control data from the optical disc 10 and provides it to the controller 32. The control unit 32 initializes the playback device 1 according to the provided control information. Next, the disk drive 31 reads the XML menu data 100 and the corresponding attached data 200 and delivers them to the DSP 33. The XML engine 61 reads the structure of the provided XML menu data 100. The analysis is provided to the presentation engine 62. Accordingly, the menu is displayed on the monitor 72 and / or the speaker 71 by the XML menu data 100 and the corresponding attached data 200 (step 701).

The user selects a menu through the user interface 200, and the playback apparatus 1 receives menu selection information (step 702).

Upon receiving the menu selection information, the playback apparatus 1 reads out the main data files 400a, 400b, 400c, or 400d linked to the selected menu by the file name (step 703).

Next, the selected main data file 400a, 400b, 400c or 400d is converted into a reproduction signal based on the reproduction control information 600 corresponding to the read main data file 400a, 400b, 400c or 400d. The playback proceeds (step 704).

If there is no request from the user during the reproduction of the main data file 400a, 400b, 400c or 400d, the reproduction is continued (step 706).

If there is a user input requesting an XML submenu from the user through the user interface 200 (step 705), the playback apparatus 1 reads out the corresponding XML submenu data 101 and the corresponding attached data 201, The submenu is interpreted according to the XML grammar (step 707).

The user selects the submenu through the user interface 200, and the playback apparatus 1 receives the submenu selection information (step 708). Upon receiving the submenu selection information, the playback apparatus 1 reads out the sub data files 500a, 500b, 500c, or 500d linked to the selected submenu by the file name (step 709).

Next, based on the reproduction control information 600 corresponding to the read sub data file 500a, 500b, 500c, or 500d, the selected sub data file 500a, 500b, 500c, or 500d is converted into a reproduction signal. Playback is performed (step 710). At this time, the sub data files 500a, 500b, 500c, or 500d are reproduced in synchronization with the main data files 400a, 400b, 400c, or 400d. The synchronization information is included in the playback control information.

8 is a schematic diagram of an optical disc 10 in which data is recorded according to the third embodiment of the present invention. However, data logically identical to the second embodiment will be denoted by the same reference numerals, and repeated description thereof will be omitted.

Referring to FIG. 8, the optical disc 10 includes attached data 200 corresponding to the XML menu data 100, the XML submenu data 101, the XML menu data 100, and the XML submenu data 101, respectively. 201), mapping information 300, audio data file 401 and / or video data file 402, sub data file 500, and playback control information 600 as main data 400. That is, when compared with the optical disc 200 according to the second embodiment shown in FIG. 5, the optical disc 10 according to the third embodiment further includes mapping information 300.

The mapping information 300 is a piece of reproduction control information in a logical meaning, and means a mapping table in which a file linked to a menu selected by a user and an address of predetermined data included in the corresponding main data file 400 are mapped. Accordingly, the mapping information 300 enables the user to know the address where the data desired by the user is recorded among the data included in the data file 400 or the sub data file 500, and thus the user can reproduce the desired data. Will be. In other words, unlike XML supports file-based access, in the present embodiment, a predetermined position in the file can be accessed through the mapping information 300.

9 is a relationship diagram of the XML menu data 100, the XML submenu data 101, the mapping information 300, the data file 400, and the sub data file 500 of FIG. 8.

Referring to FIG. 9, the menu, which is XML menu data 100. XML includes Menu 1, Menu 2, Menu 3, and Menu 4. Similarly, the submenu which is the XML submenu data 101. XML includes submenu 1, submenu 2, submenu 3, and submenu 4. The mapping information 300 corresponds to the menu.XML and the submenu.XML. The mapping information 300 is mapped to predetermined addresses of the main data file 400 or the sub data file 500 corresponding to the menu or submenu included in the menu.XML and the submenu.XML, respectively. Therefore, when the user selects menu 1, the data starting from the data located at the corresponding address included in the main data file 400 starts to be played. When the user selects the submenu 1, the sub data located in the corresponding address included in the sub data file 500 is called and reproduced. The same holds true for the remaining cases. In this way, the user can select and reproduce data stored in predetermined positions of the desired main data file and the sub data file through the menu.XML and submenu.XML created by XML grammar.

For example, even when a movie is recorded on the optical disc 10 as one main data file 400 and subtitles are recorded as one sub data file 500, the data file is stored through the mapping information 300. Since the user can access a predetermined location within the 400 or the sub data file 500, the user can select and view desired movie contents and / or subtitles.

The reproducing method of the optical disc 10 according to the third embodiment of the present invention by the above configuration is as follows.

10 is a flowchart for explaining a method of reproducing the optical disc 10 by the reproducing apparatus 1.

Referring to FIG. 10, the XML menu data 100 and the corresponding attachment data 200 are displayed on the monitor 72 and / or the speaker 71 through the same procedure as described above (step 1001).

The user selects a menu through the user interface 200, and the playback apparatus 1 receives menu selection information (step 1002).

Receiving the menu selection information, the playback device 1 extracts the address mapped to the file linked to the selected menu through the mapping information 300 (step 1003).

Next, the main data located at the extracted address is synchronized based on the reproduction control information 600, and converted into a reproduction signal to start reproduction (step 1004).

If there is no request of the submenu from the user (step 1005), playback continues (step 1006).

When a submenu request is input from the user through the user interface 200 during the reproduction of the data (step 1005), the called XML submenu data 101 and the corresponding attached data are interpreted according to the XML grammar to reproduce the submenu. (Step 1007).

The user selects the submenu through the user interface 200, and the playback apparatus 1 receives the submenu selection information (step 1008).

Upon receiving the submenu selection information, the playback apparatus 1 extracts the address mapped to the file linked to the selected submenu through the mapping information 300 (step 1009).

Next, the data located at the extracted address is synchronized based on the reproduction control information 600 to be converted into a reproduction signal and reproduced. The reproduction control corresponding to the read sub data file 500a, 500b, 500c, or 500d is performed. Based on the information 600, the sub data located at the extracted address is converted into a reproduction signal so as to be reproduced together with or overlapping with the reproduction image of the main data (step 1010). At this time, the sub data is reproduced in synchronization with the main data. The synchronization information is included in the playback control information.

Although the XML menu data 100 and the XML submenu data 101 according to the XML grammar only provide data access in units of files, the present invention uses predetermined information within a file through the mapping information 300 according to the third embodiment. The data located at the address can be accessed and reproduced.

Meanwhile, in the above-described second and third embodiments, the case where the selection request of the sub data is input from the user during the reproduction of the main data file 400 has been described. However, the XML menu data 100 and the XML sub menu data ( 101 and the menus and sub-menus from which the corresponding main data file 400 and sub data file 500 can be synchronized and reproduced together or overlapping.

On the other hand, although the above embodiment uses XML as a markup language, the same effect can be obtained by using SGML or HTML.

As described above, according to the present invention, there is provided a recording medium on which digital data interfaceable to D-TV and HDTV is recorded, a reproduction method thereof, and a reproduction device.

Furthermore, according to the present invention, the file called by the file name can be accessed, unlike the file name, the physical address, and the like, for accessing the file according to the file system employed by the conventional optical recording medium. You have flexibility.

In addition, according to the present invention, a relatively large amount of data is required for subtitle display as a conventional DVD displays subtitles as sub-picture data, which is image data. Subtitle display is also possible with data. In addition, since the data located at a predetermined address within the file can be accessed through the mapping information, the file structure can be simplified if necessary.

Claims (39)

Menu data for displaying at least one menu; And And at least one of audio data and video data, wherein main data including at least one file to be called and reproduced when a predetermined menu is selected is recorded. The method of claim 1, And selecting a predetermined menu to further record sub data including at least one file to be reproduced together with the main data by calling a file name. The method of claim 2, The sub data includes at least one sub text file for displaying text. The method of claim 3, The sub data further comprises at least one sub image file for displaying an image. The method according to any one of claims 1 to 4, The menu data is recorded in a markup language. The method of claim 5, The markup language, SGML (Standard Generalized Markup Language) derived language, characterized in that the language. The method of claim 6, The SGML derivative language comprises an Extensible Markup Language (XML). The method of claim 1, And additional data necessary for displaying the menu data is recorded. The method of claim 8, And the attachment data includes font data for setting a font of text included in the menu data. The method of claim 8, And the attachment data includes a sound data file which is called and inserted with a file name to transmit a sound included in the menu data. The method of claim 8, And the attachment data includes an image data file that is called and inserted with a file name to display an image included in the menu data. The method of claim 8, And the attachment data comprises a moving image data file which is called and inserted with a file name to display the moving image included in the menu data. Menu data recorded in a markup language, the menu data including at least one menu, wherein a file linked to the selected menu is called when the menu is selected; Main data including at least one of audio data and video data and recorded in at least one file linked to the menu and called by a file name; And And mapping information data for mapping an address of an area in which corresponding main data is recorded when a file name linked to the selected menu is called. The method of claim 13, And selecting a predetermined menu, further recording sub data including at least one file to be reproduced together with the main data by being called by a file name. The method of claim 14, The sub data includes at least one sub text file for displaying text. The method of claim 14, The sub data further comprises at least one sub image file for displaying an image. The method according to any one of claims 13 to 16, The markup language, SGML derivative language characterized in that the recording medium. The method of claim 17, The SGML derivative language, XML, characterized in that the recording medium. The method of claim 18, And the appended data necessary for the menu data to be displayed is recorded. The method of claim 19, And the attachment data includes font data for setting a font of text included in the menu data. The method of claim 19, And the attachment data includes a sound data file which is called and inserted with a file name to transmit a sound included in the menu data. The method of claim 19, And the attachment data includes an image data file that is called and inserted with a file name to display an image included in the menu data. The method of claim 19, And the attachment data comprises a moving image data file which is called and inserted with a file name to display the moving image included in the menu data. (a) reading the menu data recorded in the markup language to display at least one menu, and interpreting the menu data according to the grammar of the markup language to reproduce the menu; (b) reading a file linked to the selected menu and called with a file name; And (c) playing the read file. (a) reading the menu data recorded in the markup language to display at least one menu, and interpreting the menu data according to the grammar of the markup language to reproduce the menu; (b) reading a file which is called with a file name linked to a menu selected from a user among main data including at least one file; (c) read the sub-menu data recorded in the markup language to display at least one sub-menu for selecting the sub data corresponding to the main data, and interpret the sub-menu data according to the grammar of the mark-up language. Playing; (d) reading a file called by a file name linked to a selected submenu among sub data including at least one file; And (e) reproducing the file called in step (b) and step (d). (a) reading the menu data recorded in the markup language to display at least one menu, and interpreting the menu data according to the grammar of the markup language to reproduce the menu; (b) reading a file linked to a selected menu of main data including at least one file and called by a file name; (c) playing the read file; (d) during execution of step (c), read sub-menu data recorded in markup language to display at least one sub-menu for selecting sub-data provided to correspond to the main data, and mark-up language Interpreting the submenu according to the grammar of the submenu; (e) reading a file called by a file name linked to a selected submenu among sub data including at least one file; And and (f) playing the file read out in step (e) together with the file in step (c). (a) reproducing the menu by interpreting menu data recorded in the markup language to display at least one menu according to the grammar of the markup language; (b) extracting an address mapped to a file name linked to the selected menu and called; (c) reading main data located at the extracted address; And (d) reproducing the read main data. (a) reading the menu data recorded in the markup language to display at least one menu, and interpreting the menu data according to the grammar of the markup language to reproduce the menu; (b) extracting an address mapped to a file name linked to the selected menu and called; (c) reading main data located at the extracted address; (d) reproducing the read main data; (e) reading the sub-menu data recorded in the markup language to display at least one sub-menu for selecting the sub data corresponding to the main data, and interpreting the sub-menu according to the grammar of the markup language. Playing; (f) extracting an address mapped to a file name linked to the selected submenu and called; (g) reading the sub data located at the extracted address; And (h) reproducing the read sub data together with the main data. The method according to any one of claims 24 to 28, In step (a), (a1) reading the attached data called by the file name according to the grammar of the markup language to display the menu, interpreting the read attached data according to the grammar of the markup language, and reproducing it together with the menu data; Reproduction method characterized in that. The method of claim 29, The markup language, SGML derivative language characterized in that the recording medium. The method of claim 30, The SGML derivative language, characterized in that it comprises XML. Reading means for reading main data including menu data recorded in a markup language for displaying at least one menu from a recording medium, and at least one file linked to a selected menu and called by a file name; A markup language analysis engine for interpreting the read menu data to be displayed according to the grammar of the markup language; Converting the menu data into a playback signal to be displayed as a menu according to the interpretation of the markup language analysis engine, and converting a file linked to the selected menu and called by a file name into a playback signal. Playback device. 33. The method of claim 32, The reading means is linked to a submenu selected by the user from among submenu data recorded in markup language for displaying at least one submenu for selecting sub data provided to correspond to the main data according to a user's request. Read the submenu data including at least one file called by the filename, The markup language analysis engine interprets the read submenu data to be displayed according to the grammar of the markup language. The converting means converts the submenu data into a reproduction signal so that the submenu data is displayed as a submenu according to the interpretation of the markup language analysis engine, and the subdata linked to the selected submenu and called by a file name is reproduced together with the main data. A reproducing apparatus, characterized by converting into a reproducing signal. Reading means for reading main data located at the address from among menu data recorded in a markup language for displaying at least one menu, with reference to mapping information for mapping a predetermined name and a file name linked to the menu; A markup language analysis engine for interpreting the menu data by interpreting the markup language according to a grammar; And And converting means for converting main data read by said reading means into a reproduction signal. The method of claim 34, wherein The reading means is a file name that is called by being linked to a submenu of submenu data recorded in markup language to display at least one submenu for selecting subdata provided to correspond to the main data according to a user's request. Read sub data located at the address by referring to mapping information for mapping the predetermined address with The markup language analysis engine interprets the read submenu data to be displayed according to the grammar of the markup language. The converting means converts the submenu data into a reproduction signal so that the submenu data is displayed as a submenu according to the interpretation of the markup language analysis engine, and the subdata linked to the selected submenu and called by a file name is reproduced together with the main data. A reproducing apparatus, characterized by converting into a reproducing signal. 36. The method of any one of claims 32 to 35, The markup language, SGML derivative language characterized in that the playback device. The method of claim 36, The SGML derivative language includes XML, And the markup language analyzing engine is an XML engine. 36. The method of claim 33 or 35, And the sub data includes at least one sub text file for displaying text. 36. The method of claim 33 or 35, And the sub data further comprises at least one sub image file for displaying an image.