Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
  • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
  • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing

Definitions

• the present invention relates to a recording/reproducing apparatus capable of accessing the Internet, and more particularly, to a recording/reproducing apparatus capable of searching for contents that have been recorded on an information storage medium.
• a digital versatile disc (DVD) reproducing apparatus having a web-browser for accessing the Internet and performing web surfing and a DVD for such a DVD reproducing apparatus, i.e., an interactive DVD, have been provided.
• an interactive DVD when the DVD is inserted into the DVD reproducing apparatus, a hypertext markup language (HTML) document, which is stored in the DVD or the DVD reproducing apparatus, is displayed.
• HTML hypertext markup language
• menu information is displayed as an HTML document by which a user can select desired contents.
• an applet or a script having a search function may be coded and inserted into the HTML document so that the user can search for text information in the contents recorded on the DVD.
• a conventional interactive DVD does not include a search function for searching for text information in the contents. Accordingly, when the search function is realized, for example, by using JavaScript, text strings corresponding to search parameters input by a user have to be recorded in an applet or a script by using an If syntax, which increases the complexity and amount of coding. In particular, in order to search for text strings in different languages, the applets or the scripts including the text strings of each language have to be separately provided, which greatly increases the amount of coding. In addition, since the text strings defined in the applets or the scripts are only effective in the HTML documents including the applets or the scripts, even the same text strings have to be defined in each HTML document. In other words, the coding of the applet or the script takes a long time and the operation of the applet or the script requires a large amount of memory.
• a reproducing apparatus which includes a browser, for reproducing data on an information storage medium having registry information, comprising a search unit for searching for the registry information based on an input search parameter and a search interface unit for receiving a search parameter from the browser and providing the search parameter to the search unit, and receiving text information from the search unit and transmitting the text information to the browser.
• the registry information comprises a text data manager defined in a digital versatile disc (DVD), which is one of the information storage media. It is preferable that the search interface unit is realized by using an application program interface (API).
• API application program interface
• the browser includes an analysis engine for analyzing a predetermined client program inserted into a markup document, and the client program realizes the search interface unit.
• the client program is a Java Applet or
• the search interface unit is realized by at least one method defined in a class having a property parameter, which denotes at least one portion of information included in the text data manager. It is more preferable that the search interface unit includes a search method for searching the text data manager and a property parameter, which is included in the class, for receiving text information on the text data manager.
• the search interface unit further comprises a previous search method for searching for data prior to the text information of the search method, and the search interface unit further comprises a next search method for searching for data posterior to the text information of the search method.
• the search unit is realized as firmware, which interacts with the search interface unit, and the search unit comprises a search module for searching for text data which matches with the search parameter received from the search interface unit and an extraction module for extracting the data searched by the search module and transmitting the extracted data to the search interface unit.
• a recording apparatus which includes a browser, for recording contents on an information storage medium, comprising a recording unit for recording received registry information on the information storage medium, a recording interface unit for receiving registry information on contents, which are recorded on the information recording medium, from the browser and transmitting the registry information to the recording unit, a search unit for searching for the registry information based on an input search parameter, and a search interface unit for receiving a search parameter from the browser and providing the search parameter to the search unit, and receiving text information from the search unit and transmitting the text information to the browser.
• the recording apparatus of claim 12 further comprises a deletion unit for deleting received registry information from the information storage medium and a deletion interface unit for receiving predetermined registry information from the browser and transmitting the registry information to the deletion unit.
• the registry information comprises a text data manager defined in a DVD, which is one of the information storage media.
• the recording interface unit, the deletion interface unit, and the search interface unit are realized by using an API.
• the browser includes an analysis engine for analyzing a predetermined client program inserted into a markup document, and the client program realizes the recording interface unit, the deletion interface unit, and the search interface unit.
• the client program is a Java Applet or JavaScript program
• the recording interface unit, the deletion interface unit, and the search interface unit are realized by at least one method defined in a class having a property parameter, which denotes at least one portion of information included in the text data manager.
• FIG. 1 is a block diagram illustrating a reproducing apparatus according to an embodiment of the present invention
• FIG. 2 is a block diagram for explaining the operation of the reproducing apparatus of FIG. 1 ;
• FIG. 3 is a block diagram illustrating the relationship among a text data manager, a search interface unit, and a search unit;
• FIG. 4 is an outline of a DVDObject Class provided for application program interface (API) of FIG. 3;
• FIG. 5 is an example of a search interface unit realized based on the Class of FIG. 4;
• FIG. 6 is a flowchart for explaining a search algorithm of a search module in a search unit, which searches according to FindTextData(LCD, TT, IDCD);
• FIG. 7 is a flowchart for explaining an extraction algorithm of an extraction module in the search unit, which extracts according to FindTextData(LCD, TT, IDCD);
• FIG. 8 is a flowchart for explaining another extraction algorithm of the extraction module in the search unit, which extracts according to FindTextData(LCD, TT, IDCD);
• FIG. 9 is a flowchart for explaining a search algorithm of a search module in a search unit, which searches according to FindPreviousltemText(previous-n);
• FIG. 10 is a flowchart for explaining a search algorithm of a search module in a search unit, which searches according to FindNextltemText(next-n);
• FIGS. 11 A and 11 B are block diagrams illustrating a recording apparatus according to the embodiment of the present invention.
• FIG. 12 is a block diagram illustrating an example of FIG. 1 1A; and FIG. 13 is an outline of DVDObject Class realized according to the recording apparatus of FIGS. 11 A and 11 B.
• FIG. 1 is a block diagram illustrating a reproducing apparatus according to an embodiment of the present invention.
• a reproducing apparatus 10 includes a browser 11 , a search interface unit 15, and a search unit 19.
• the browser 11 recorded in a memory (not shown) of the reproducing apparatus 10, is a program executed by a CPU (not shown).
• the browser 11 means a user interface for reading files online.
• the search interface unit 15 interfaces the browser 11 with the search unit 19.
• the search interface unit 15 receives a search parameter from the browser 11 and supplies the search parameter to the search unit 19, and receives text information from the search unit 19 and sends the text information to the browser 11.
• the search unit 19 searches registry information recorded on a disc 1 by using the search parameter transmitted through the search interface unit 15.
• the disc 1 contains at least one of content, registry information, and documents, which can be displayed by the browser.
• the registry information denotes text information on the content recorded on the information storage medium 1. Fields, which form the registry information, can be varied according to the characteristics of the content.
• the registry information for video content may include title, volume, language, production date, producer, leading actor and actress, and so forth.
• FIG. 2 is a block diagram for explaining the operation of the reproducing apparatus 10 of FIG. 1.
• the browser 1 1 includes a Java Applet or JavaScript analysis engine 120 as a client program analysis engine.
• a digital versatile disc (DVD) 1 as an information storage medium contains a file called menu.html.
• the file menu.html which is provided as a hypertext markup language (HTML) document, is a search page to search for text information in the content recorded on the DVD 1.
• HTML document is an example of a markup document for displaying predetermined information by the browser 1 1.
• the file menu.html may include and display images 111 , which are recorded on the DVD 1.
• an input form 1 12 for inputting a search parameter and a submit button 1 13 for transmitting the search parameter are arranged in menu.html.
• the input form 1 12 and the submit button 1 13 interact with the Java Applet or JavaScript program, which is a client program for searching.
• the Java Applet or JavaScript program inserted into menu.html is analyzed by the Java Applet or JavaScript analysis engine 120 and transmitted to the search unit 19 by the browser 1 1 in order to perform the search function.
• the DVD 1 includes a text data manager 100 as registry information on contents.
• the text data manager 100 as text information for describing the contents recorded on the DVD 1 is defined in a DVD standard.
• the search unit 19 includes a search module for searching for text data that matches with the search parameter in the text data manager 100, and an extraction module for extracting the text data, which is searched for by the search module.
• the search unit 19 may be realized as firmware provided in the reproducing apparatus 10.
• the firmware represents a program that is inserted into a program memory (not shown) in the reproducing apparatus 10 to be a part of the reproducing apparatus 10.
• the firmware can be distributed as software and installed in the reproducing apparatus 10.
• the firmware can be referred to as a microcode.
• FIG. 3 is a block diagram illustrating the relationship among the text data manager 100, the search interface unit 15, and the search unit 19.
• the information recorded on a DVD is divided into a video title set Video_TS, an audio title set Audio_TS, and a data title set Data_TS.
• the video title set Video_TS is separated into a video object Video OBJ and video manager information VMGI.
• the video object Video OBJ includes at least one title TITLE #1 , 2, and 3.
• the video manager information VMGI includes text data, in which information on the title included in the video object Video OBJ is defined.
• the text data is included in the text data manager 100.
• the audio title set Audio_TS is separated into an audio object
• the audio object Audio OBJ includes at least one album ALBUM #1 , 2, and 3.
• the audio manager information AMGI includes text data, in which information on the album included in the audio object Audio OBJ is defined. Here, the text data is included in the text data manager 100.
• the data title set Data_TS includes an HTML document, such as menu.html of FIG. 2 that displays menus and resources.
• the resources include a bmp file or a JPEG file, which will be inserted into menu.html, such as the image 111 of FIG. 2.
• the HTML document includes a Java Applet or JavaScript program.
• the Java Applet or JavaScript program is operated by an application program interface (API), which is realized as the search interface unit 15 according to the present invention.
• API application program interface
• the browser 11 analyzes the Java Applet or JavaScript program and transmits a search parameter input by a user to the API.
• the API returns the text information to the browser 11.
• FIG. 4 is an outline of a DVDObject Class provided for the API of FIG. 3.
• the DVDObject Class is template for defining property parameters and methods that are bases of the Java Applet or JavaScript program for searching for the text data manager and includes TextData and TextDatalDCD as properties and FindTextData(LCD, TT, IDCD), indPreviousltemText(previous-n), and FindNextltemText(next-n) as methods.
• FindTextData(LCD, TT, IDCD) is a search method that searches for the text data manager.
• LCD, TT, and IDCD are parameters for searching for text data included in the text data manager having a tree structure. More specifically, LCD denotes a language code, TT denotes a title in the case of DVD-Video and an album in the case of DVD-Audio, and IDCD denotes an identification code.
• FindPreviousltemText(previous-n) and FindNextltemText(next-n) are also search methods for searching for the text data manager.
• the above search methods can be performed after FindTextData(LCD, TT, IDCD) is performed.
• previous-n and next-n denote parameters input from the user in order to perform the search methods.
• TextData and TextDatalDCD are property parameters to return search data that are searched by performing the search method.
• the return value for TextDatalDCD is represented by a number.
• the Java Applet or JavaScript program inserted into an HTML document can be performed based on the Class.
• the properties and the methods included in the Class may be varied when necessary.
• FIG. 5 is an example of the search interface unit 15, which is realized based on the Class of FIG. 4.
• a Java Applet or JavaScript interface as the search interface unit 15 according to the present invention includes FindTextData(LCD, TT, IDCD), FindPreviousltemText(previous-n), and FindNextltemText(next-n) as a Java Applet or JavaScript API, and includes TextData and TextDatalDCD as property parameters.
• FIG. 6 is a flowchart for explaining a search algorithm of a search module in the search unit 19, which searches according to the FindTextData(LCD, TT, IDCD) method.
• the search algorithm is performed according to the data structure of the text data manager in a DVD.
• text data language code (TXTDT_LCD), text data language unit search pointer #n (TXTDT_LU_SRP #n), text data language unit #n (TXTDT_LU #n), item text search pointer search pointer for volume (IT_TXT_SRP_SRP_VLM), item text search pointer search pointer for title #n (IT_TXT_SRP_SRP_TT #n), textdata (TXTDT), item text identification code (IT JXTJDCD), item text (IT XT), and item text search pointer #n (IT_TXT_SRP #n) denote data fields that are defined based on the data structure of the text data manager.
• FindTextData(LCD, TT, IDCD) receives values of parameters, i.e., LCD, TT, and IDCD, from a user in step 601. First, it is detected whether text data having the same language code as the input language code (LCD) exists in a text data manager. In other words, TXTDT_LU_SRP #n denoting TXTDT_LCD is detected in step 602. When the same language code does not exist in the text data manager, i.e., TXTDTJ-CD is absent, the absence of text information is reported to a browser 1 1 in step 603 and the search operation is ended.
• the search module moves to TXTDT_LU #n with reference to a TXTDT_LU_SRP, in order to move to the location where the text data of the same language code is recorded in step 604. Thereafter, the existence of a title the same as the input title (TT) is detected in the text data of the same language code. More specifically, a search pointer denoting the location where the input TT is recorded, i.e., IT_TXT_SRP_SRP_VLM or IT_TXT_SRP_SRP_TT #n, is detected in step 605.
• the search module moves to the location where the text data of the input TT is recorded, i.e., the corresponding TXTDT, with reference to the IT_TXT_SRP_SRP_VLM or IT_TXT_SRP_SRP_TT #n in step 606.
• step 607 it is detected whether text data having the same identification code as the input IDCD, i.e., IT_TXT_IDCD, exists in the TXTDT for the input TT.
• text data having the same identification code exists in the TXTDT, i.e., when the IT_TXT_IDCD exists
• the location information on the detected IT_TXT i.e., the location of the corresponding IT_TXT_SRP #n, is stored in a memory (not shown) included in a search unit 19 in step 608.
• FIG. 7 is a flowchart for explaining an extraction algorithm of an extraction module in the search unit 19, which extracts according to FindTextData(LCD, TT, IDCD).
• the extraction module extracts the text data searched by the search module using a property parameter TextData and transfers the extracted text data to the browser 11.
• a detailed extraction algorithm will now be described as follows. Referring to FIG. 7, the extraction module reads the location information stored in step 608, which is the location information on IT_TXT, i.e., the location of IT_TXT_SRP #n in step 701.
• the searched IT_TXT as a called TextData is stored in a memory (not shown) included in the search unit 19 with reference to an item text start address (IT_TXT_SA) recorded as the read location information in step 702.
• the text data attained by the search operation is stored as a property parameter TextData.
• the browser 11 may display the text data attained by the search operation, i.e., IT_TXT, to a user.
• FIG. 8 is a flowchart for explaining the other extraction algorithm of the extraction module in the search unit 19, which extracts according to FindTextData(LCD, TT, IDCD).
• the extraction module extracts the text data searched by the search module using the property parameter TextDatalDCD and transfers the text data to the browser 11.
• a detailed extraction algorithm will now be described. Referring to FIG. 8, the extraction module reads the location information on IT_TXT stored in step 608, i.e., the location of IT_TXT_SRP #n in step 801. Next, the IT_TXT_IDCD recorded in the read location information is stored in a memory (not shown) included in the search unit 19 as a called
• FIG. 9 is a flowchart for explaining a search algorithm of a search module in the search unit 19, which searches according to FindPreviousltemText(previous-n).
• the search module searches the text data by using the parameter previous-n.
• FindPreviousltemText(previous-n) receives a value of a parameter input from a user, i.e., previous-n, in step 901.
• the location information on IT .TXT recorded in step 608, i.e., the location of IT_TXT_SRP #n is read in step 902.
• IT_TXT is absent, the absence of the text information is reported to the browser 11 in step 905 and the search operation is ended.
• the location information on IT_TXT is recorded in a memory (not shown) of the search unit 19 in step 906.
• FIG. 10 is a flowchart for explaining a search algorithm of a search module in the search unit 19, which searches according to FindNextltemText(next-n).
• the search module searches the text data by using a parameter next-n. More specifically, referring to FIG 10, FindNextltemText(next-n) receives a parameter input from the user, i.e., next-n, in step 1001. First, the location information on IT_TXT recorded in step 608, i.e., the location of IT_TXT_SRP #n, is read in step 1002. Thereafter, the next location information from the read IT_TXT to the amount of next-n is detected in step 1003.
• IT_TXT is absent, the absence of the text information is reported to the browser 11 in step 1005 and the search operation is ended.
• IT_TXT exists, the location information on IT_TXT is recorded in a memory (not shown) of the search unit 19 in step 1006.
• FIGS. 11 A and 11 B are block diagrams of a recording apparatus according to the present invention.
• a recording apparatus 60 according to the present invention records contents on a DVD-rewritable and adds the text data about the recorded contents to a text data manager.
• the recording apparatus 60 includes a content recording unit (not shown) for recording the contents.
• the content recording unit can be realized in various forms, the function of adding new text data will be mainly described because a characteristic of the recording apparatus 60 according to the present invention is the function of adding new text data to the text data manager.
• the recording apparatus 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 which is recorded in a memory (not shown) arranged in the recording apparatus 60, is a program run by a CPU (not shown).
• the browser 61 is a user interface for reading files online.
• the recording interface unit 62 interfaces the browser 61 with the recording unit 63.
• the recording interface unit 62 receives information to be recorded from the browser 61 and sends the information to the recording unit 63.
• the recording unit 63 records the information from the recording interface unit 62 on an information storage medium 6 as registry information.
• a disc 6 includes at least one of contents, registry information, and documents, which can be displayed by a browser.
• the registry information means text information on the contents to be recorded on the disc 6.
• the fields that compose the registry information can vary according to the characteristics of the contents.
• the registry information on video contents may include title, volume, language, production date, producer, and leading actor and actress.
• the search interface unit 65 interfaces the browser 61 with the search unit 69.
• the search interface unit 65 receives a search parameter from the browser 61 to send to the search unit 69 and receives text information from the search unit 69 to send to the browser 61.
• the search unit 69 searches for the registry information recorded on the disc 6 by using the search parameter transferred through the search interface unit 65.
• a recording apparatus 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 a search unit 69.
• the recording unit 60 of FIG. 11 B includes the deletion interface unit 64 and the deletion unit 66, which the recording apparatus 60 of FIG. 11 A does not have.
• the deletion interface unit 64 interfaces the browser 61 with the deletion unit 66. In other words, the deletion interface unit 64 receives information to be deleted from the browser 61 and sends the information to the deletion unit 66. The deletion unit 66 deletes the information transferred through the deletion interface unit 64 from the registry information recorded on a disc 6.
• the browser 61 Since the browser 61 , the recording interface unit 62, the recording unit 63, the search interface unit 65, and the search unit 69 are the same as those of FIG. 11A, they are allotted the same reference numerals and descriptions thereof will not be repeated.
• FIG. 12 is a block diagram for explaining an example of FIG. 11 A.
• the browser 61 includes a Java Applet or JavaScript analysis engine 720 as a client program analysis engine and displays add. html 710, which is used by a user to add text data to a text data manager.
• a DVD 6, a type of disc includes the above-described add. html 710.
• add. html 710 which is provided as an HTML document, is a search page used to add text information on the contents that are recorded on the DVD 6.
• An input form 71 1 for receiving information to be recorded on the DVD 6 and an add button 712 for transmitting information received by the input form 71 1 are arranged in add. html 710.
• the input form 71 1 and the add button 712 interact with the Java Applet or JavaScript program for recording the information.
• the Java Applet or JavaScript program inserted into add. html 710 is analyzed by the Java Applet or JavaScript analysis engine 720, and transmitted to the recording unit 63 by the browser 61 in order to perform the recording operation.
• the DVD 6 includes a text data manager 600 as registry information on contents.
• the text data manager 600 as text information for describing the contents recorded on the DVD 6 is defined in a DVD standard.
• the recording unit 63 includes a recording module for adding new text data to the text data manager 600.
• the recording unit 63 may be realized as firmware provided in the recording apparatus 60.
• the firmware represents a program that is inserted into a program memory (not shown) in the recording apparatus 60 and is a part of the recording apparatus 60.
• the firmware can be distributed as software and installed in the recording apparatus 60.
• the firmware can be referred to as microcode.
• the example of FIG. 1 1 B can be realized as that of
• FIG. 13 is an outline of DVDObject Class realized according to the recording apparatus of FIGS. 1 1 A and 11 B.
• the DVDObject Class includes TextData and TextDatalDCD as properties and FindTextData( ), FindPreviousltemText( ), FindNextltemText( ), AddTextData( ), and DeleteTextData( ) as methods.
• the DVDObject Class of FIG. 13 further includes AddTextData( ) and DeleteTextData( ).
• AddTextData( ) is a method for recording new text data to the text data manager of a DVD.
• DeleteTextData( ) is a method for deleting specific text data from the text data manager of the DVD.
• the properties and the methods included in the Class may vary when necessary.
• the algorithm of the methods is realized by the same methods described with reference to FIGS. 6, 9, and 10.
• An example of a source code of the JavaScript program included in the HTML document according to the present invention is as follows.
• a reproducing apparatus and a recording apparatus efficiently search for text information in contents.
• a large amount of text information included in the text data manager of a digital versatile disc (DVD) can be easily searched like browsing websites, by using the reproducing apparatus and the recording apparatus according to the present invention.
• the JavaScript application program interface API
• a user can efficiently search for script, words of a song, actors and actresses, and movie scenes in contents.
• a predefined text data manager can be used as a correctable text database by using an API for adding and deleting text data.

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• 2001
  • 2001-03-13 KR KR10-2001-0012896A patent/KR100396553B1/ko not_active IP Right Cessation
• 2002
  • 2002-09-05 WO PCT/KR2002/001684 patent/WO2004023478A1/en active Application Filing

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