KR20020072871A - Optical recording medium capable of being searched for text information contained therein, reproducing apparatus, and recording apparatus therefor - Google Patents

Abstract

PURPOSE: A recording device and a reproducing device for an optical recording medium, capable of searching text information are provided to easily search a large volume of text information included in a text data manager of a DVD like web-browsing. CONSTITUTION: A reproducing device for an optical recording medium, capable of searching text information includes a search part(19) for searching registry information on the bases of an input search parameter, and a search interface part for receiving the search parameter from a browser(11) to provide to the search part and receiving the searched text information from the search part to transmit to the browser, wherein the registry information includes a text data manager defined in a DVD(1), one of the optical disc, the search interface part is an API(Application Program Interface), and the browser includes a reading engine(120) for reading a predetermined client program inserted into a web document, the client program realizes the search interface part.

Description

Optical recording medium capable of being searched for text information contained therein, reproducing apparatus, and recording apparatus therefor}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of optical recording and reproducing, and more particularly, to a recording / reproducing apparatus providing a search function for contents recorded on an optical recording medium in a recording / reproducing apparatus connectable to the Internet.

Background Art A DVD (DigitalVersatile Disc) player equipped with a web browser and a DVD therefor (hereinafter referred to as "interactive DVD") have been proposed to enable web surfing by connecting to the Internet. In the interactive DVD, when the DVD is inserted into the DVD player, the HTML document stored in the DVD or DVD player is displayed. Menu information is displayed through the HTML document, and the user can select desired content.

At this time, in order to enable the user to search for text information on the content recorded on the DVD, an applet or script having a search function may be coded and inserted into the HTML document. However, it is inefficient to code and operate applets or scripts to have a search function.

The reason for this is as follows. The proposed interactive DVD does not have a search function for searching text information regarding content. Therefore, for example, when implementing this using JavaScript, a text string corresponding to a search word input from a user by using an If statement must be recorded in an applet or a script, and the amount of coding becomes very large and complicated. In particular, in order to be able to search the text strings for each language, the amount of coding is further increased because an applet or a script in which the text strings for each language is recorded must be separately provided. In addition, since the text string defined in the applet or script is useful only in the HTML document into which the applet or script is inserted, it is cumbersome to define the same text string every time the HTML document is inserted. That is, it takes a long time to code an applet or a script, and it requires a lot of memory space to execute it.

Accordingly, it is an object of the present invention to provide an optical recording medium, a recording apparatus and a reproducing apparatus capable of searching text information on content more efficiently.

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

2 is a reference diagram for explaining an operation of the playback device 10 of FIG.

3 is a relationship diagram between the text data manager, the search interface unit 15, and the search unit 19;

4 is a schematic diagram of a DVDObject class prepared for the API of FIG. 3;

5 is an example of a search interface unit 15 based on the class of FIG. 4.

6 is a flowchart for explaining a search algorithm of the search module of the search unit 19 based on FindTestData (LCD, TT, IDCD);

7 is a flowchart for explaining an extraction algorithm of the extraction module of the search unit 19 based on FindTestData (LCD, TT, IDCD),

8 is a flowchart for explaining another extraction algorithm of the extraction module of the search unit 19 according to FindTestData (LCD, TT, IDCD),

9 is a flowchart for explaining a search algorithm of the search module of the search unit 19 based on FindPreviousItemText (previous-n),

10 is a flowchart for explaining a search algorithm of a search module of the search unit 19 based on FindNextItemText (next-n),

11A and 11B are block diagrams of a recording apparatus according to a preferred embodiment of the present invention;

12 is a reference diagram for explaining an implementation example of FIG. 11A;

FIG. 13 is a schematic diagram of a DVDObject Class implemented according to the recording apparatus of FIGS. 11A and 11B.

* Explanation of symbols for the main parts of the drawings

1: optical disc 10: player

11: browser 15: search interface

19: search unit 111: image

112: input form 113: Submit button

120: JavaApplet or JavaScript interpretation engine

100: text data manager

According to an aspect of the present invention, there is provided a reproducing apparatus including a browser and reproducing an optical disc on which registry information is recorded, comprising: a retrieving unit for retrieving the registry information on the basis of an input search word; And a search interface unit for receiving and providing the search unit and receiving a search result from the search unit and delivering the search result to the browser.

The registry information includes a text data manager defined on a DVD (Digital Versatile Disc) which is one of the optical discs.

The search interface unit may be implemented with an application program interface (API).

The browser is a web surfing-enabled web browser, and includes an analysis engine for interpreting a predetermined client program embedded in a web document, and the client program more preferably implements the search interface unit.

The client program is a JavaApplet or JavaScript program, and the search interface unit is preferably implemented by at least one method defined in a class having an attribute variable that can point to at least some of the information included in the text data manager.

The search interface unit may include: a search method for searching the text data manager; And an attribute variable included in the class and capable of receiving a search result for the text data manager.

The search interface unit may further include a forward search method for searching for data existing before the location of the search result by the search method, and searching for data existing after a location where the search result by the search method exists. It is particularly preferable to further include a backward search method.

It is effective that the web document is recorded on the optical disc.

The search unit is implemented in firmware linked with the search interface unit, the search module for searching for text data matching the search word received from the search interface unit; And an extraction module for extracting the data retrieved by the search module and delivering it to the search interface unit.

On the other hand, according to another field of the present invention, the above object is a recording device having a browser, capable of recording content on an optical disc, comprising: a recording unit for recording the received registry information on the optical disc; A recording interface unit for receiving registry information on the content recorded on the optical disc from the browser and transferring the registry information to the recording unit; A search unit for searching the registry information based on the input search word; And a search interface unit which receives a search word from the browser, provides a search word to the search unit, and receives a search result from the search unit and transmits the search result to the browser.

The recording apparatus includes a deletion unit for deleting the received registry information from the optical disk; And a deletion interface unit receiving predetermined registry information from the browser and transferring the predetermined registry information to the deletion unit.

The registry information includes a text data manager defined on a DVD (Digital Versatile Disc) which is one of the optical discs.

The recording interface unit, the deletion interface unit, and the search interface unit are implemented as an application program interface (API), and the browser is a web surfing-enabled web browser, an analysis engine for interpreting a predetermined client program inserted into a web document. Preferably, the recording interface unit, the deletion interface unit, and the search interface unit is implemented by the client program.

The client program is a JavaApplet or JavaScript program, and the recording interface, the deleting interface, and the search interface are at least one method defined in a class having an attribute variable that can point to at least some of the information included in the text data manager. Particularly preferred is implemented by.

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 10 includes a browser 11, a search interface unit 15, and a search unit 19.

The browser 11 is a program stored in a memory (not shown) included in the playback device 10 and executed by a CPU (not shown), and means a user interface for reading files online.

The search interface unit 15 interfaces the browser 11 and the search unit 19. That is, the search word is received from the browser 11 and provided to the search unit 19, and the search result from the search unit 19 is received and transmitted to the browser 11. The search unit 19 searches the registry information recorded on the optical disc 1 using the search word received from the search interface unit 15.

On the other hand, the optical disc 1 stores at least one content, registry information, and a document displayable by a browser. Here, "registry information" means "text information about the content recorded on the optical disc 1". The fields constituting the registry information may be variously set according to the characteristics of the content. For example, the registry information about the video content may include a title, a volume, a language, a production time, a producer, a lead actor, and the like.

FIG. 2 is a reference diagram for describing an operation of the playback device 10 of FIG. 1.

Referring to FIG. 2, the browser 11 includes a JavaApplet or JavaScript analysis engine 120 as a client program analysis engine. On the other hand, the above-mentioned menu.html is recorded in the optical disc as the DVD 1 according to the present embodiment. menu.html is created as an HTML document as a retrieval page for retrieving textual information on content recorded on the DVD 1. Hypertext Markup Language (HTML) refers to markup information for displaying predetermined information in the browser 11. The markup serves to tell the browser 11 how to display the text or image inserted in menu.html. In menu.html, an image 111 recorded on the DVD 1 can be inserted and displayed. In addition, in menu.html, an input form 120 for inputting a search word and a Submit button 113 for transmitting a search word are disposed. The input form 120 and the Submit button 113 are linked with a JavaApplet or JavaScript program, which is a client program for searching. That is, a JavaApplet or JavaScript program inserted into menu.html to execute a search is interpreted by the JavaApplet or JavaScript analysis engine 120 and delivered to the search unit 19 through the browser 11 to be executed.

In addition, the text data manager 100 is recorded on the DVD 1 as registry information about the contents. The text data manager (TXTDT_MG) is text information for describing contents recorded on a DVD, and is defined in the DVD standard. The search unit 19 includes a search module for searching text data that matches the search word from the text data manager 100, and an extraction module for extracting text data searched by the search module. Indeed, the search unit 19 may be implemented with firmware provided in the playback apparatus 10. The firmware refers to a program that is inserted into a program memory (not shown) included in the playback device 10 and becomes a part of the playback device 10. The firmware may be distributed like other software and installed in the playback apparatus 10. Firmware is also called microcode.

3 is a relationship diagram between the text data manager, the search interface unit 15, and the search unit 19. FIG.

Referring to FIG. 3, information recorded on a DVD is classified into a video title set (Video-TS), an audio title set (Audio_TS), and a data title set (Data_TS).

The video title set is divided into a video object (Video OBJ) and video manager information (VMGI). The video object includes at least one title (TITLE # 1, 2, 3). The video manager information includes text data in which information about a title belonging to a video object is defined. Text data is contained in a text data manager.

The audio title set is divided into an audio object (Audio OBJ) and audio manager information (AMGI). The audio object includes at least one album (ALBUM # 1, 2, 3). The audio manager information includes text data in which information about an album belonging to an audio object is defined. Similarly, text data is included in the text data manager.

The data title set includes an HTML document such as menu.html of FIG. 2 for displaying a menu. The resource RESOURCE includes a bmp file or a JPEG file to be inserted into menu.html as in the image 111 of FIG. 2. On the other hand, JavaApplet or JavaScript program is inserted in HTML document. JavaApplet or JavaScript program is to be executed by an API (Application Program Interface) implemented as a search interface unit 15 in accordance with a preferred embodiment of the present invention. To this end, the browser 11 interprets a JavaApplet or JavaScript program and delivers a search parameter input from the user to the API. The API returns the search result (Text Information) back to the browser 11.

FIG. 4 is a schematic diagram of a DVDObject Class prepared for the API of FIG. 3.

Referring to FIG. 4, the DVDObject Class is a template defining attribute variables and methods that are the basis of a JavaApplet or JavaScript program for searching a text data manager, and includes TextData and TextDataIDCD as properties. And methods such as FindTestData (LCD, TT, IDCD), FindPreviousItemTest (previous-n), and FindNextItemTest (next-n) as methods.

FindTestData (LCD, TT, IDCD) is a search method for searching the text data manager. LCD, TT, and IDCD refer to parameters for retrieving text data contained in a tree structured text data manager. The LCD indicates a language code, the TT indicates a title in the case of DVD-Video, the album in the case of DVD_Audio, and the IDCD indicates an identification code. For example, FindTestData ('KR', 0, 30h) indicates to search for the name of the volume in Korean.

FindPreviousItemTest (previous-n) and FindNextItemTest (next-n) are also search methods for searching the text data manager. However, they may be executed after FindTestData (LCD, TT, IDCD) is executed. previous-n and next-n indicate parameters entered from the user for the execution of the search method. For example, FindPreviousItemTest (10) instructs to retrieve text data 10th forward from text data that was previously searched, and FindNextItemTest (9) retrieves text data 10th backward from previously searched text data. To instruct.

TextData and TextDataIDCD are attribute variables for returning search data retrieved as the search method is executed. TextData is to return a string of retrieved text data (Character String), for example, expressed as x = DVDObject.TextData. TextDataIDCD is for returning IDCD of search data. The return value is a number, for example, expressed as x = DVDObject.TextDataIDCD.

As such, when a class in which attributes and methods are defined as the search interface unit 15 is generated, a JavaApplet or JavaScript program inserted into an HTML document may be executed based on the class. On the other hand, properties and methods included in the Class can be configured in various ways as needed.

5 is an example of a search interface unit 15 based on the class of FIG. 4.

Referring to FIG. 5, the JavaApplet or JavaScript interface that is the search interface unit 15 according to the present embodiment includes FindTestData (), FindPreviousItemTest (), and FindNextItemTest () as JavaApplet or JavaScript API, and includes TextData and TextDataIDCD as attribute variables. do.

6 is a flowchart for explaining a search algorithm of the search module of the search unit 19 based on FindTestData (LCD, TT, IDCD). However, the search algorithm is executed in accordance with the data structure of the text data manager of the DVD. Therefore, TXTDT_LCD (Text Data Language Code), TXTDT_LU_SRP #n (Text Data Language Unit Search Pointer #n), TXTDT_LU #n (Text Data Language Unit #n), IT_TXT_SRP_SRP_VLM (Item Text Search Pointer Search Pointer for volume) , IT_TXT_SRP_SRP_TT #n (Item Text Search Pointer Search Pointer for title #n), TXTDT (TextData), IT_TXT_IDCD (Item Text Identification Code), IT_TXT (Item Text), and IT_TXT_SRP #n (Item text Search Pointer #n) Pointer to a data field defined by the data manager's data structure.

Referring to FIG. 6, FindTestData (LCD, TT, IDCD) receives parameters from the user, that is, LCD, TT, and IDCD (step 601). First, it is searched whether text data having the same language code as the input language code LCD exists in the text data manager. That is, the TXTDT_LU_SRP #n (Text Data Language Unit Search Pointer #n) indicating the TXTDT_LCD (Text Data Language Code) is found (step 602). If the same language code does not exist in the text data manager, that is, if TXTDT_LCD does not exist, the browser 11 is notified that no search result exists (step 603), and the search ends.

If the same language code exists in the text data manager, that is, if TXTDT_LCD is present, it moves to TXTDT_LU #n (Text Data Language Unit #n) with reference to the corresponding TXTDT_LU_SRP to move to the location where the text data with the same language code is recorded. (Step 604).

Next, it is searched whether the same title as the input title TT exists among the text data provided with the same language code. More specifically, a search pointer indicating a position where an input TT is recorded, that is, an item text search pointer search pointer for volume (IT_TXT_SRP_SRP_VLM) or IT_TXT_SRP_SRP_TT #n (n) is found (step 605). . If the same title does not exist, that is, if the search pointer is not found, the browser 11 notifies that the search result does not exist (step 603), and the search ends. If the corresponding IT_TXT_SRP_SRP_VLM or IT_TXT_SRP_SRP_TT #n exists, it moves to the position where the text data for the input title is recorded, that is, the corresponding TXTDT (TextData), in step 606.

Finally, the TXTDT is searched for whether there is text data having the same identification code as the input IDCD among the text data for the input title, that is, IT_TXT_IDCD (Item Text Identification Code) (step 607). If not found, the browser 11 notifies that the search result does not exist (step 603), and the search ends. If text data having the same identification code exists, that is, if IT_TXT_IDCD exists, the search unit 19 is provided with the location information of the retrieved IT_TXT (Item Text), that is, the location of the corresponding IT_TXT_SRP #n (Item text Search Pointer #n). Store in a memory (not shown) (step 608).

7 is a flowchart for explaining an extraction algorithm of the extraction module of the search unit 19 based on FindTestData (LCD, TT, IDCD).

The extraction module extracts the text data retrieved by the search module using the attribute variable TextData and delivers it to the browser. More specific extraction algorithm is as follows. Referring to FIG. 7, the extraction module reads the stored location information, that is, the location information of the IT_TXT, that is, the location of the IT_TXT_SRP (step 701). Next, the IT_TXT retrieved with reference to IT_TXT_SA (Item Text Start Address) recorded as the read position information is stored as a called TextData in a memory (not shown) provided in the search unit 19 (step 702). That is, the text data obtained as a result of the search is recorded as the attribute variable TextData. Accordingly, the browser 11 may display the text data obtained from the search result, that is, IT_TXT to the user.

8 is a flowchart for explaining another extraction algorithm of the extraction module of the search unit 19 based on FindTestData (LCD, TT, IDCD). The extraction module extracts the text data retrieved by the search module using the attribute variable TextDataIDCD and delivers it to the browser. More specific extraction algorithm is as follows. Referring to FIG. 8, the extraction module reads the location information of the IT_TXT, that is, the location of the IT_TXT_SRP, stored in step 608 (step 801). The IT_TXT_IDCD recorded in the read position information is stored as a called TextDataIDCD in a memory (not shown) provided in the search unit 19 (step 802). That is, the identification code of the text data obtained as a result of the search is recorded as the attribute variable TextDataIDCD. Accordingly, the browser 11 may display the text data obtained from the search result to the user.

9 is a flowchart for explaining a search algorithm of the search module of the search unit 19 based on FindPreviousItemText (previous-n). The search module searches for text data using the parameter previous-n. 9, FindPreviousItemText (previous-n) receives a parameter input from a user, that is, previous-n (step 901). First, the location information of the IT_TXT stored in step 608, that is, the location of IT_TXT_SRP #n is read (step 902).

Based on the read position information, the position information located forward by previous-n is searched (step 903).

In operation 904, it is determined whether there is text data corresponding to the retrieved location information, that is, IT_TXT. If IT_TXT does not exist, the browser 11 notifies that the search result does not exist (step 905), and the search ends. If the IT_TXT exists, the location information of the IT_TXT is recorded in a memory (not shown) provided in the search unit 19 (step 906).

10 is a flowchart for explaining a search algorithm of the search module of the search unit 19 based on FindNextItemText (next-n). The search module searches for text data using the parameter next-n. Referring to FIG. 10, FindNextItemText (next-n) receives a parameter input from a user, that is, next-n (step 1001). First, the location information of the IT_TXT stored in step 608, that is, the location of IT_TXT_SRP #n is read (step 1002).

The location information located forward by next-n is searched based on the read location information (step 1003).

In operation 1004, it is determined whether the text data corresponding to the retrieved location information, that is, IT_TXT exists. If IT_TXT does not exist, the browser 11 notifies that the search result does not exist (step 1005), and the search ends. If the IT_TXT exists, the location information of the IT_TXT is recorded in a memory (not shown) provided in the search unit 19 (step 1006).

11A and 11B are block diagrams of a recording apparatus according to a preferred embodiment of the present invention.

The recording device 60 according to the present invention is for recording contents on a recordable DVD and adding text data for newly recorded contents to the text data manager. Accordingly, the recording device 60 includes a content recording unit (not shown) for recording the content. The content recorder may be implemented in various ways. However, since the recording apparatus 60 according to the present invention has a feature of adding new text data to the text data manager, the recording apparatus 60 will be described mainly with the function of adding new text data.

Referring to FIG. 11A, the recording device 60 includes a browser 61, a recording interface unit 62, a recording unit 63, a search interface unit 65, and a search unit 69.

The browser 61 is a program stored in a memory (not shown) provided in the recording apparatus and executed by a CPU (not shown), and means a user interface for reading files online.

The recording interface 62 interfaces the browser 61 and the recording unit 63. That is, the information to be recorded from the browser 61 is received and provided to the recording unit 63. The recording unit 63 records the information received from the recording interface unit 62 on the optical disc 6 as registry information.

On the other hand, the optical disc 6 stores at least one content, registry information, and a document displayable by a browser. Here, "registry information" means "text information about the content recorded on the optical disc 6". The fields constituting the registry information may be variously set according to the characteristics of the content. For example, the registry information about the video content may include a title, a volume, a language, a production time, a producer, a lead actor, and the like.

The search interface unit 65 interfaces the browser 61 and the search unit 69. That is, the search word is received from the browser 61 and provided to the search unit 69, and the search result from the search unit 69 is received and transmitted to the browser 61. The retrieval unit 69 retrieves the registry information recorded on the optical disc 6 using the search word received from the retrieval interface unit 65.

Referring to FIG. 11B, the recording device 60 includes a browser 61, a recording interface unit 62, a recording unit 63, a deletion interface unit 64, a deletion unit 66, a search interface unit 65, and The search unit 69 is provided. Compared with the recording apparatus of FIG. 11A, the recording apparatus of FIG. 11B further includes a deleting interface unit 64 and a deleting unit 66.

The deletion interface unit 64 interfaces the browser 61 and the deletion unit 66. That is, information to be deleted is received from the browser 61 and provided to the deletion unit 66. The deletion unit 66 deletes the information received from the deletion interface unit 64 from the registry information recorded on the optical disc 6.

Since the browser 61, the recording interface 62, the recording unit 63, the search interface 65, and the search unit 69 are the same as those in Fig. 11A, the same reference numerals are given and repeated descriptions are omitted. .

FIG. 12 is a reference diagram for explaining an implementation example of FIG. 11A.

Referring to FIG. 12, the browser 61 includes a JavaApplet or JavaScript analysis engine 720 as a client program analysis engine, and displays add.html so that a user can add text data to the text data manager. The optical disk is a DVD 1, in which add.html described above is recorded according to the present embodiment. add.html is created as an HTML document as a retrieval page for adding text information on the content recorded on the DVD 1. In add.html, an input form 711 for inputting information to be recorded and an Add button 712 for transmitting information input to the input form 711 are disposed. The input form 711 and the Add button 712 are linked with a JavaApplet or JavaScript program for recording. In other words, the JavaApplet or JavaScript program inserted in Add.html for recording is interpreted by the JavaApplet or JavaScript program analysis engine 720 and delivered to the recording unit 63 through the browser 61 for execution.

The optical disk 6 is a DVD, and a text data manager 600 is recorded as registry information for contents. The text data manager (TXTDT_MG) is text information for describing contents recorded on a DVD, and is defined in the DVD standard. The recording unit 63 includes a recording module for adding new text data to the text data manager 600. In practice, the recording unit 63 may be implemented by firmware provided in the recording device 60. The firmware refers to a program that is inserted into a program memory (not shown) included in the recording device 60 and becomes part of the recording device 60. The firmware may be distributed like other software and installed in the playback apparatus 10. Firmware is also called microcode.

Meanwhile, the embodiment according to FIG. 11B may also be implemented like that of FIG. 12.

FIG. 13 is a schematic diagram of a DVDObject Class implemented according to the recording apparatus of FIGS. 11A and 11B.

Referring to FIG. 13, a DVDObject Class includes TextData and TextDataIDCD as properties, and includes FindTestData (), FindPreviousItemTest (), FindNextItemTest (), Addtextdata (), and DeleteTextData () as methods. Here, the configuration of the DVDObject Class further includes AddtextData () and DeleteTextData () in addition to that of FIG. AddTextData () is a method for writing new text data to the DVD's text data manager. DeleteTextData () is a method for deleting specific text data from the DVD's text data manager. As described above, when the DVDObject Class in which the attributes and methods are defined as the recording interface 62 and / or the deleting interface 64 is created, the JavaApplet or JavaScript program inserted into the HTML document is not generated. It can be executed.

On the other hand, properties and methods included in the Class can be configured in various ways as needed. In addition, the algorithm of the method may implement a method similar to that described in FIGS. 6, 9, and 10.

The following is an example of source code of a JavaScript program embedded in an HTML document according to the present invention.

<html> <head> <title> Title Name Search </ title> <SCRIPT LANGUAGE = "JavaScript"> <!-function TitleNameSearch () {x = document.form1.TitleNum.valueret = DVDObject.FindTextData ('KR' , x, 80) if (ret == ok) {document.writeln (DVDObject.TextData)} //!-> </ SCRIPT> </ head> <body bgcolor = "white" text = "black" link = "blue" vlink = "purple" alink = "red"> <OBJECT CLASSID = "clsid: A0739DE5-571F-11D2-A0310060977F760C" ID = DVDObject "HEIGHT = 50% WIDTH = 60%> <form name =" form1 "> <p> Title Number: <input type = "text" name = "TitleNum" value = "1" maxlength = "2" size = "2"> </ p> <input type = "submit" name = "TitleNameSearchBtn" value = "TitleNameSearch" OnClick = "TitleNameSearch ();"> </ form> </ body> </ html>

As described above, according to the present invention, there is provided a playback apparatus and a recording apparatus capable of searching text information on content more efficiently. In particular, according to the present invention, a large amount of text information included in the text data manager of the DVD can be searched as easily as web browsing. In other words, when the JavaScript API is used to search the DVD's text data manager, the user can efficiently search for script information about the content, song lyrics, cast members, and movie scene search. In addition, in the case of DVD-rewritable, a predefined text data manager can be used as an editable text database through an API for adding and deleting text data.

Claims (22)

A reproducing apparatus, comprising: a browser, for reproducing an optical disc on which registry information is recorded; A search unit for searching the registry information based on the input search word, And a search interface unit for receiving a search word from the browser, providing the search word to the search unit, and receiving a search result from the search unit and delivering the search result to the browser. The method of claim 1, And the registry information includes a text data manager defined on a DVD (Digital Versatile Disc) which is one of the optical discs. The method of claim 2, And the search interface unit is implemented as an application program interface (API). The method of claim 3, The browser is a web surfing-enabled web browser having an analysis engine for interpreting a predetermined client program embedded in a web document, And the client program implements the search interface unit. The method of claim 4, wherein The client program is a JavaApplet or JavaScript program, And the search interface unit is implemented by at least one method defined in a class having an attribute variable that can indicate at least some of information included in the text data manager. The method of claim 5, The search interface unit may include: a search method for searching the text data manager; And an attribute variable included in the class and capable of receiving a search result for the text data manager. The method of claim 6, And the search interface unit further comprises a forward search method for searching for data existing before a location where a search result by the search method exists. The method of claim 6, And the search interface unit further comprises a backward search method for searching for data existing after a location where a search result by the search method exists. The method according to any one of claims 4 to 8, And the web document is recorded on the optical disc. The method of claim 1, The search unit is a playback device, characterized in that implemented in the firmware (firmware) in conjunction with the search interface unit. The method of claim 10, The search unit is a search module for searching for text data matching the search word received from the search interface unit; And And an extraction module for extracting the data retrieved by the search module and transferring the extracted data to the search interface unit. A recording apparatus having a browser and capable of recording contents on an optical disc, A recording unit for recording the received registry information on the optical disk; A recording interface unit for receiving registry information on the content recorded on the optical disc from the browser and transferring the registry information to the recording unit; A search unit for searching the registry information based on the input search word; And And a search interface unit for receiving a search word from the browser, providing the search word to the search unit, and receiving a search result from the search unit and delivering the search result to the browser. The method of claim 12, A deletion unit for deleting the received registry information from the optical disk; And And a deletion interface unit for receiving predetermined registry information from the browser and transferring the predetermined registry information to the deletion unit. The method according to claim 12 or 13, And the registry information comprises a text data manager defined on a DVD (Digital Versatile Disc) which is one of the optical discs. The method of claim 12, And the recording interface unit, the deleting interface unit, and the search interface unit are implemented as an application program interface (API). The method of claim 12, The browser is a web surfing-enabled web browser having an analysis engine for interpreting a predetermined client program embedded in a web document, And the recording interface unit, the deleting interface unit, and the search interface unit are implemented by the client program. The method of claim 16, The client program is a JavaApplet or JavaScript program, And the recording interface unit, the deleting interface unit, and the search interface unit are implemented by at least one method defined in a class having an attribute variable that can indicate at least some of information included in the text data manager. The method of claim 17, And the recording interface unit includes a recording method for recording data to be included in the text data manager. The method of claim 17, And the deletion interface unit includes a deletion method for deleting data included in the text data manager. The method of claim 17, The search interface unit may include: a search method for searching the text data manager; And an attribute variable included in the class and capable of receiving a search result for the text data manager. The method of claim 20, And the search interface unit further comprises a forward search method for searching for data existing before a location where a search result by the search method exists. The method of claim 20, And the search interface unit further includes a backward search method for searching for data existing after a location where a search result by the search method exists.