TWI271634B - Information storage medium containing event occurrence information, and method and apparatus therefor - Google Patents

Abstract

Provided are an information storage medium in which event occurrence information is recorded, and a method and apparatus for playing the information storage medium. The information storage medium includes: AV data including at least one video object that is constituted of video object units, each having an audio pack, a video pack, and a navigation pack; and event occurrence information for generating an event designated based on the data structure of the AV data. Accordingly, a markup document screen can be more easily output in synchronization with an AV screen by utilizing the data structure of an existing DVD-Video without change.

Description

1271634 IX. Description of the Invention: Technical Fields of the Invention The present invention relates to an interactive digital versatile discs (hereinafter referred to as DVDs), and more particularly to an information storage medium and a broadcast information storage medium. Method and apparatus by which web page files can be reproduced without changing the DVD video format, and DVDs containing web files are included in the prior art along with PC-based AV data, hereinafter referred to as interactive DVDs. It is being sold. AV data recorded on interactive DVDs can be reproduced in two modes: one is the mode in which the AV material is displayed in the same manner as a normal DVDs, and the other is an interactive mode in which the AV material is reproduced via the display window defined by the web page file. If the user selects the interactive mode, the web browser in the PC displays the webpage file recorded on the interactive DVD, and the display window of the webpage file displays the AV material selected by the user. If the selected AV material is a movie, the webpage file The display window displays the movie, and other areas outside the display window display various other information, such as movie scripts, mains, actor pictures, etc. Other information includes image files or text files. However, in the interactive mode, in order to display AV data via a display window defined according to the HTML language, the AV material must be synchronized to the web page file, and the synchronization is generally accurate, so the AV material and the web page file are simultaneously reproduced at the set time. Displayed together, but can also be roughly synchronized to maintain only the relationship between AV data and web pages. In the conventional interaction mode, synchronization is achieved by implementing I27l634 as a timer for the software system. However, this complicates the implementation of the timer-dependent synchronization and becomes more complicated when multiple events occur simultaneously. In order to solve the above and other problems, it is an object of the present invention to provide a method and apparatus for storing an information storage medium and playing the information storage medium, thereby more easily synchronizing the reproduction of the AV material and the markup document. Another object of the present invention is to provide an information storage medium and a method and apparatus for playing the information storage medium, whereby an existing DVD video format is used to synchronously reproduce AV data and markup files. It is still another object of the present invention to provide an information storage medium and a method and apparatus for playing the information storage medium, whereby the event occurrence time point is more simply specified, and the special event occurs at a specified time point. For the above and other purposes, an information storage medium provided by the present invention includes: AV data having at least one video object composed of a video object unit, each video object unit having an audio pack (audio pack) ), a video pack and a navigation pack; and event occurrence information for generating an event specified according to the data structure of the AV material. Preferably, the information storage medium further includes a mark file for outputting the AV picture from the AV material, and an event occurrence information recorded in the mark file. The AV data record is a video title set composed of at least one video object. Preferably, the event information is a video object of the navigation package corresponding to the specified video title group of 6 1271634. The unit is reproduced and a trigger event is required. That is to say, the event occurrence information is used to reproduce the video object unit corresponding to the navigation package of the specified video title group, and the specified content is required to be output on the screen. To achieve the above and other objects, the present invention provides a method for playing an information storage medium. The information storage medium for playing includes: AV data having at least one video object composed of video object units, each video object unit having one An audio package, a video package and a navigation package; and an information storage medium for generating event information of a predetermined event. In the method, the event occurrence information is first interpreted, and then when the AV data is decoded, if an information structure conforming to the interpretation result is found, an event is generated. Preferably, the interpreting step in the method first interprets the event occurrence information in the tag file defining the display window of the AV picture for reproducing the video object, and then detects the location where the event corresponding to the interpretation result occurs. Preferably, the video title comprises at least one video object composed of cells, each having an audio package, a video package and a navigation package' and a portion of the AV data corresponding to the location where the event occurred. Recurrence of an incident. To achieve the above and other objects, the present invention provides a device for playing an information storage medium. The information storage medium for playing includes: at least one video object 2AV data composed of a video object unit, each video object unit has a ' An audio package, a video package, and a navigation package, and an event occurrence information for generating a predetermined event. In the device, the reader reads the AV data or the event occurrence information, and the rendering engine (Presentati〇n enSine) interprets and reads the 1271634 event occurrence information, outputs the interpretation result and generates an event, and when the decoder decodes the AV data, If it is found to conform to the data structure received from the rendering results of the rendering engine, the rendering engine is required to generate appropriate events. The above and other objects, features, and advantages of the present invention will become more apparent and understood by the appended claims appended claims The video title set containing the video object is stored. The video object (VOB) is composed of video object units (VOBUs), and each video object unit includes an audio package, a video package and a navigation package. The information storage media storage supports the interactive mode tag file. In this specification, the tag file represents not only the tag file itself, but also the tag resource of various images and files contained in the tag file. The markup file screen indicates the screen displayed by the markup file interpreted by the markup file viewer, and the markup file defines a display window for outputting the decoded AV data, that is, the decoded video object unit. The tag file also defines event occurrence information used to generate a trigger event in the method according to the present invention. The event occurrence information according to the present invention is defined based on the data structure of the AV material recorded on the information storage medium without changing the data structure. More specifically, if the navigation package of the video title set is found and the video object group having the navigation package is reproduced, a corresponding trigger event must occur. Therefore, when the video object group is started to be reproduced, the content is displayed in a preset area of the markup file screen, and the event occurrence information according to the present invention will be described in more detail later. 1271634 Figure 1 is a block diagram showing the structure of an information storage medium in accordance with a preferred embodiment of the present invention. Please refer to FIG. 1. The root directory 100 includes a DVD video directory VIDEO-TS 102 containing AV data. The VIDEOJTS 102 includes a file containing navigation information about the entire video title recorded in the information storage medium. VIDEOJTS.IFO 104〇 at VIDEOJTS In the .IFO 104, the language information representing the preset of the video title set is recorded, and the VIDEOJTS 102 also includes a file VTS_01JUFO 106 which records the navigation information of the first video title set. Further, the VIDEOJTS 102 records the video title VTSJ) 1-O.VOB 108, VTS-01_1.VOB 110, etc. constituting the video title set. Video title VTS_01J).VOB 108, VTS-01-1, VOB 110, etc. are called VOBs, each VOBs has an integer number of VOBUs, and each usually has a navigation package, at least one video package, and one Audio package. The detailed structure of the VOBUs is disclosed in the "DVD-Video" of the DVD-Video Standard "Reading Disc 1". The root directory 1 also includes a directory DVD-ENAV 112 which records the navigation file DVD-ENAV.IFO 114 according to the present invention. For example, the navigation file DVD^ENAV.IFO 114 includes a definition of a corresponding directory, a structure of a related directory, a number of titles included in the corresponding directory, basic information related to the corresponding directory, a language used for the title, subtitles and font information, such as resolution. The color and markup files display information and copyright information. The directory DVD_ENAV 112 also includes a STARTUP.HTM 116 that defines a tag file for displaying a display window of the AV image. The STARTUP.HTM 116 includes event generation information for generating a trigger event in accordance with the method of the present invention, and the event occurrence information included in the STARTUP.HTM 116 is Implemented by an application interface (API), the API includes a trigger event identifier, the video title set identifier, and the navigation package 1271634 identifier. The DVD-ENAV 112 directory may also include a preloaded list file STARTUP.PLD 120 for performing preloading based on the preloaded information recorded by the STARTUP.HTM 116 record. QUIZ.PNG 118 is a file instance containing content that is output in synchronization with the AV picture when a trigger event according to STARTUP.HTM 116 occurs. A.HTM 122 is a pre-loaded file, and A.PNG 124 is a file linking A.HTM 122 files. The applicant of the present invention has filed an application for the Korean Patent Application No. 01-65393 entitled "Device and Method for Pre-loading Information Information Storage Media and Playing Information Storage Media". Because the application details the preloading information, that is, preloading the table file, preloading the file, and preloading the API, it simply describes the required content. The preloading information indicates that the preloaded file is read and stored in the cache memory. For example, the preloading information can be implemented as a link tag, which includes a path and/or attribute of the preloaded table file, a link label and a Connect to the leading label. Or preloading information can also be implemented as an API that includes parameters for the path and/or attributes of the preloaded table file and calls the preloaded table file. The resource locator can be attached to the path of the preloaded list file and the preloaded file. Therefore, the preloaded file A.HTM 122 used to call the record on the DVD is dvd://DVDJENAV/A.HTM 〇 2A Referring to FIG. 2A, the DVD video directory stores n video title sets VTS#1 202, VTS#2 202···· and VTS, and FIG. 2B shows the structure of the reproduction control information structure of the DVD video of FIG. 1 . #n 202 and Video Manager (VMG) 2〇0, which records the profile information about all video titles. Referring to FIG. 1271634, FIG. 2B, the VMG 200 includes: a video manager information (VMGI) 210 including control data, a backup material group (VOBS) 212 connected to the VMG 200, and a backup data of the VMGI 210. The VMG 200 may not include the VOBS. 212. Fig. 3 is a detailed structural diagram showing a video title set (VTS) of Fig. 2A. Referring to FIG. 3, VTS#i202 includes video title set information (VTSI) 302 including header information, VOBS 304 for displaying option pictures, VOBS 306 and VTSI backup data 308 constituting video title sets, and may not include display options. The VOBS of the picture. The VOBS 306 constituting the video title set is composed of K video objects VOB#1, VOB#2, . . . , and VOB#K 312, and one VOB shell fj is composed of cells #1, #2, . . . ·, and cell #^4 are composed of cells 322, each cell is composed of #1, #2, ..., and these! VOBUs 332, a V0BU 332 includes reproduction or search corresponding The VOBU navigation package NV_PCK 342, as well as the audio package A_PCK 344, the video package V_PCK 346, and the sub-packet SP_PCK 348 which are repeatedly recorded in the VOBU. Fig. 4 is a detailed structural diagram showing the navigation pack NVjCK. Referring to FIG. 4, the NVJPCK 402 is composed of a Display Control Information (PCI) packet PCI_PKT 404 and a Data Search Information (DSI) packet DSI_PKT 406. The PCI packet includes the PCI, DSI required to reproduce the video package and/or the audio package. The packet includes the DSI required to search for video packets and/or audio packets. Figures 5 and 6 show the detailed structure of the PCI packet of Figure 4. Please refer to Figure 5. The PCI packet includes PCIGI with header information, NSMIAGLI with non-seamless recurring angle information, HLI with key information, and RECI with record information. 1271634 Please refer to Figure 6, PCI_GI includes navigation package logical block number (LBN) NV-PCK-LBN, VOBU category VOBU-CAT, VOBU user operation control VOBUJJOPJTL, VOBU time start VOBU-S-PTM, VOBU time end VOBU-E-PTM, VOBU sequential terminal time end VOBU_SE_E_PTM and cell elapsed time C-ELTM. NV_PCK_LBN represents the number of the navigation cell, VOBU_CAT represents the state of the analog protection system (APS), VOBU_UOP_CTL represents the user operation is prohibited when the VOBU is reproduced or displayed, and VOBU_S_PTM represents the time point at which the video data included in the VOBU is started to be reproduced, and the VOBU_EJPTM represents the end. At the time point of reproducing the video data included in the VOBU, VOBU_SE_E_PTM is a code indicating the video data reproduction terminal included in the VOBU, and C_ELTM represents the start time from the start time of reproducing the first VOBU to the corresponding VOBU in the corresponding cell. . Figures 7A, 7B and 8 show the reference diagram of the program chain (PGC), which represents the reproduction order of the logic unit 'that is the program that reproduces all or part of the video title'. In other words, the video title is at least - consists of PGC. Please refer to FIGS. 7A and 7B'. The PGC 700 shown in FIG. 7A indicates that the video title is composed of only one PGC, and the 2pGC#1 702 shown in FIG. 7B indicates that the video title is defined by a plurality of 1" Referring to FIG. 8, the PGC 800 is linked to the corresponding VOB cell by the program chain information (PGCI) 802. The PGCI 802 is defined in the VMGI 210 of FIG. 2B and the VTSI 302 of FIG. 3, and the PGCI 802 includes the program chain number ( PGCN) ' PGCN is the serial number assigned to the PGC as an identifier. In one embodiment of the invention, NV-PCK-LBN and 12 1271634 VOBU_SJPTM are used as parameters for generating a triggering event, as will be described later. In another embodiment of the invention, the elapsed time of the program chain number PGCN and the recurring chain is used as a parameter to generate a trigger event. In still another embodiment of the present invention, the title number (TTN) included in the VMG and the elapsed time of the title are used as parameters for generating a trigger event. The API and required parameters are included in the tag file STARTUP.HTM as a trigger event, which will be detailed later. 1. DvdVideo.SetTrigger(trigger_id, vtsn, nv-lbn, ref) This API represents a trigger event when a VOBU including the navigation pack in the video title set starts to reproduce. The first parameter triggered represents the trigger event recognizer, the second parameter vtsn represents the video title group number of the trigger event, the third parameter nv_lbn represents the navigation package NV_PCK_LBN number, and the navigation package is the video title that exists in the trigger event. In the group, the fourth parameter ref represents the 包含 included in the second parameter when the call event occurs. For example, DvdVideo.SetTrigger(0,l,1000,0); // represents a trigger event that occurs when the VOBU with the navigation package corresponding to vtsn=l and nv_lbn=l 000 starts to reappear and occurs at the VOBU_S_PTM time point. The triggering event does not need to be perfectly synchronized to the AV picture, and the triggering event can occur within a range of tens of microseconds, for example, about 50 microseconds after the start of the reproduction time point. 2.

DvdVideo.SetTrigger(trigger_id, vob_id, vobu_s_ptm, ref) This API represents a trigger event in which the VOBU including the navigation pack in the video title to which the title being reproduced belongs is started to reproduce. 13 1271634 The first parameter tdggerjd represents the trigger event recognizer, the second parameter vobjd represents the VOB recognizer in the video header of the trigger event, and the third parameter v〇bu_s_ptm represents the video title set that exists in the trigger event. The navigation package number, the fourth parameter ref represents the 包含 included in the second parameter when the call event occurs. For example, DvdVideo.SetTrigger(0,l,180000,0); //Describes the trigger event when a VOBU with a navigation package corresponding to vtsn=l and vobu j_ptm=l 80000 starts to reappear, such a trigger event There is no need to perfectly synchronize to the AV picture, and the trigger event can occur within a few seconds after the start of the reproduction time. Since vobu_s__ptm is processed in units of 1/90000 seconds, the parameter vobu_s_ptm can be expressed as time: minute: second: microsecond (hh:mm:SS:ms) for the convenience of the manufacturer, and can be 1/90000 second. Processing is converted to hh:mm:ss:ms 〇3.

DvdVideo.SetTrigger(trigger_id, ttn, elapsed_time, ref) This API illustrates that a trigger event occurs when a VOBU containing a navigation packet of the elapsed time and the video title number begins to reproduce. The first parameter triggered represents the trigger event recognizer, the second parameter ttn represents the video title number of the trigger event, the third parameter elapsecLtime represents the reproduction history time of the video title group in which the trigger event occurred, and the fourth parameter ref represents When the event is called, it is included in the second parameter. For example, DvdVideo.SetTrigger(0,l,"00:20:10",0); //Describe the VOBU when there is a navigation package corresponding to ttn=l and elapsed_time=20 minutes 10 seconds video title reproduction period 1271634 Start to reproduce, the trigger event that occurred. Such a trigger event does not need to be perfectly synchronized to the AV picture, and the trigger event can occur within a few tens of microseconds after the start of the reproduction time point. 4. DvdVideo.ClearTrigger(triggerid) This API represents the trigger event for the cancellation request. The parameter triggerjd represents the trigger event recognizer. When the draw line is represented by 1 , the triggerjd can also be used to cancel all trigger events. For example, DVdVideo.ClearTHgger(+); //Describes the cancellation of all trigger events. 5. DvdVideo.VTSNumber This API represents the number of the video title set to which the VOBU that is being reproduced is to be provided. For example, var a=DvdVideo.VTSNumber// indicates that the number of the video title group being reproduced is stored in the variable & _ 6. DvdVideo.CurentPosition This API represents the navigation package number in the video title set to which the VOBU that is being reproduced is to be provided. For example, var b=DvdVideo. CurentPosition// indicates that the navigation pack number of the video title set is being stored in variable b.

7. DvdVideo.VOB - ID This API represents the VOB recognizer VOB_ID to which the VOBU is being reproduced. For example, var a=DvdVideo.VOB_JD// indicates that the VOB_ID is stored in the 15 1271634 variable a. 8.Dvd Video .CurrentTime This API represents the VOB-S_PTM of the navigation package to which the VOBU to be reproduced is to be provided. This time can be expressed as hh:mm:ss:ms (hour:minute:second: microsecond) so that Manufacturers are easy to use. For example, var b=DvdVideo. CurentTime// indicates that the VOB_S__PTM of the VOBU being reproduced is stored in the variable b. At the same time, the preloading API included in the source code will also be listed. 1. navigator.Preload(URL,flag) This is the API for preloading the preloaded file into the cache. The parameters used by the API represent the information about the preloaded table and the preloaded file location. The parameter URL represents the path of the preloaded list file and the preloaded file. The parameter flag is 1 for the preloaded list file, and 〇 is for the preloaded file. If the preloading succeeds, it will respond with "true", and if the preloading fails, it will respond with "false". For example, navigator .Preload(http ://www.holey wood· com/tom.pld,l)// indicates a preloaded list file via the search URL http://www.holeywood.com/tom_pld to Preloaded into the cache memory by the preloaded file. 2. navigator. Preload(URL?resType) This is the preloaded preloaded file to the cache API. The parameters used by the API ° API represent the information about the preloaded list file and the preloaded file location. And further represent the attributes of the preloaded file. The parameter URL represents the path to the preloaded table file or preloaded file '$number 1271634 resType represents the attribute of the preloaded file. If the preloading is successful, the response is true. If the preloading fails, it will respond with a "false". For example, 'navigator.Preload(uhttp://www.holeywood.com/tom.htni, te xt/html,,)/ /Instructed to read the file 'files' stored in the Internet at http://www.holeywood.com/tom.htm as html text files.

An example of a DvdVideoEvent object structure is as follows:

Interface DvdEvent:Event{ readonly attribute unsigned longindex;//id of Event readonly attribute unsigned long parml; readonly attribute unsigned long parm2; readonly attribute unsigned long parm3; void initDVDEvent(in DOMString typeArg, in boolean canBubbleArg, in boolean cancelableArg, in unsigned Long indexArg, in unsigned long parmlArg, in unsigned long parm2Arg, in unsigned long parm3Arg); The STARTUP.HTM source code example using the aforementioned API is as follows: <?xml version=''1.0" encoding=''UTF-8'' ?>

<!DOCTYPE html PUBLIC-//DVD//DTD XHTML 17 1271634

DVD-HTML 1.0//EN http://www.dvdforum.org/enav/dtd/dvdhtml-lO.dtd&gt;&lt;html&gt;&lt;head&gt;&lt;title&gt;Trigger Event Sample&lt;/title&gt; <style type= "text/css"&gt;&lt;!-start screen construction after subtracting 10% from each edge of a screen having a general 4x3 aspct ratio and determining the logical pixels of an OSD screen to be 720x480, with a video display method as a Background--〉 @video-display { video-placement:background

Video-aspect-ratio :4x3N video-clip-rectangle :(0,0,72 0,4 80) video-background-color:# 0000 0000 clip-rectangle :(0,0,720,4 80) &lt;!—the Background color of the body is determined to be transparent--〉 body {background-colortransparent} #quiz{ po sition: absolute; visibility ;hidden;overflow:hidden; width:277;height:98;clip:rect(0 277 98 0); background-color :#eeeeee; borderroutset 4px; 1271634 &lt;/style&gt; <script> &lt;!-- function dvdvideo_handler(evt) /* evt follows the interface standard of the Dv Event Object· */ { switch (evt. index) { case TRIGGER—EVENT://trigger event is trapped. if(evt.parml ==l&amp;&amp;evt.parm2==0) {/* trigger event 1 designated below is received. */ var Demo=document.getElementByld(iquiz,) demo.style.left=435;demo.style.top=377; demo, sty le.visibility=visible;

DvdVideo.ClearTrigger(l); } if (evt.parml==2&amp;i&amp;evt.parm2==0) {/*trigger event 2 desigbated below is received and preloaded. */ navigator.Preload(udvd://dvd_enav /startup.pld^, "text/preload"); 19 1271634 function setupEventListeners() var htmlNode=document.documentElement; /* event handler is installed */ htmlNode.addEventListener("dvdvideo",dvdvideo_handler,tr ue); /* Locations where trigger events 1 and 2 are to occur are determined */

DvdVideo.SetTrigger(l,l,1000,0);/* trigger where quiz is popped up */

DvdVideo.SetTrigger(2,l,1200,0);/*trigger where preloadind is requested */

DvdVideo.Play();/* reproduction starts */ } //!_-&gt;&lt;/script&gt;&lt;/head&gt; 〈body body is loaded, setupEventListeners Are called. */ &lt;div id = Uquiz,5&gt;&lt;img src=5,quiz.png5,&gt;&lt;/div&gt;&lt;/body&gt;&lt;/html&gt; 20 1271634 The following describes the preloading table The source file STARTUP.PLD source code instance: &lt;?xml version=''1.0" encoding=,,UTF=8” ? &gt;&lt;!DOCTYPE preload PUBLIC,,-DVDDTD DVD Preload List 1 .OEN",'http://www.dvdforum.org/enav/dvd_preload-list.dtd" <preload cachesize=''128KB"&gt; Filedef type=text/xml” href=”dvd://DVD-ENAV/A.HTM''/&gt;&lt;filedef type=,'image/png” href:,,,,dvd://DVD_ENAV/A .PNG,, /&gt;&lt;/preload&gt; Figures 9A and 9B are screens 900, 910 of trigger events occurring according to the above-described source code. Referring to FIGS. 9A and 9B, no event occurs when NVJPCK__LBN is 0, and when an indication event such as NV_PCK_LBN is 1000 occurs, the question screen 912 (marker file screen) from the question file QUIZ.PNG is output to the AV screen 910. . Fig. 10 is a block diagram showing a reproducing apparatus according to a first embodiment of the present invention. Please refer to the first diagram. The reproduction device reproduces the AV data from the disc. The AV data in the disc 100 includes at least one video object. Each video object has an audio package, a video package and a guide. The video object unit of the package. The disc 100 stores event generation information indicating an event based on the data structure of the AV material. In order to perform reproduction, the reproducing apparatus includes a reader 1, a decoder 2, a rendering engine 3, and a mixer 4. The reader 1 reads the AV data or event occurrence information, and the rendering engine 3 interprets the read event occurrence information, and outputs the decoded result to the decoder 2 and the event that the decoder 2 is required to occur. More specifically, the rendering engine 3 first interprets the event occurrence information recorded in the reproduction mark file of the display window of the AV screen displaying the reproduced AV material, and then the rendering engine 3 transmits the interpretation result, that is, the event occurrence request is based on Information about the structure of the data to the decoder 2, for example, information about the time (place) at which the event occurred may be represented by a navigation package specified in the predetermined video title set. In the above embodiment, for example, an event occurs based on the video title set number (VTSN) and the navigation pack number (NV-PCKJLBN). However, in another embodiment, the event may also occur based on, for example, the video object number VOB_ID, the video object unit time start (VOBU_S_PTM), and the like. For example, the event may occur according to the program chain number and the reproduction program chain elapsed time, and the decoder 2 checks the data structure when decoding the read AV data, and if the decoder 2 finds the data satisfying the condition that the event is required, the decoder 2 The discovery of the rendering engine 3 data will be notified. When the rendering engine 3 reproduces the AV material having the discovered data structure, for example, immediately or after tens of microseconds after the start of the VOBU reproduction of the specified navigation package in the specified video title group, the specified content is output. To the screen. As another example, the rendering engine 3 outputs the specified content to the screen a few tens of microseconds after the specified elapsed time or elapsed time of the specified program chain. Figure 11 is a block diagram showing a reproducing apparatus according to a second embodiment of the present invention. The same blocks as in Fig. 10 are not described in detail because they perform the same functions. Referring to FIG. 11, the decoder 2 includes a buffer 21, a demultiplexer 22, 22 1271634 stream decoder 23, a system clock reference (SCR) generator 24, and a trigger generator 25. The buffer 21 receives and buffers an MPEG PS stream such as an AV material according to an embodiment of the present invention. The multiplexer 22 demultiplexes the MPEG PS stream into packets. The system clock reference generator 24 monitors the clock information attached to each packet to generate a system clock reference based on the predetermined clock. The trigger generator 25 receives the event occurrence information from the presentation engine 3, and immediately notifies the presentation engine 3 when triggering the system clock reference occurring in response to the received event occurrence information. At the same time, stream decoder 23 decodes the stream packets based on the system clock reference. Figure 12 is a more detailed illustration of a reference diagram of a procedure for generating an event in accordance with the present invention in the reproducing apparatus of Figures 10 and 11. Please refer to Fig. 12'. The display screen is composed of the markup file screen and the AV screen inserted in the markup file screen. The rendering engine 3 sets the trigger position of the trigger event and transmits the set trigger position to the decoder 2. In other words, the rendering engine 3 interprets the API in the tag file and transmits the parameter of the trigger event that occurred to the decoder 2, and the decoder 2 detects the navigation packet in the video title group that matches the parameter ,, and transmits the trigger recognizer. To the rendering engine 3, in order to notify the rendering engine 3 to generate an event. Thus, the rendering engine 3 calls a built-in event handler that generates an event that displays the appropriate content on the screen at the time of the event request or a few microseconds. In addition, the rendering engine 3 can generate events that preload the corresponding archives at or after the event request. The reproducing method according to the present invention will now be described in the reproducing apparatus having the above structure. 23 1271634 Figure 13 is a flow chart illustrating a method of reproduction in accordance with the present invention. Referring to FIG. 13, in step 1301, the device first reproduces the event occurrence information recorded on the disc 100, and secondly in step 1302, the reproducing device detects the data structure of the AV data when decoding the AV data, and Generate events that are defined at a specified location in the data structure. Figure 14 is a flow chart showing an example of Figure 13. Referring to FIG. 14, the reproducing device reproduces the video object that needs to be reproduced and outputs the AV picture. At the same time, the reproducing device also overlaps the output AV picture on the display window of the mark file. At this time, in step 1401, The device now interprets the event occurrence information recorded in the tag file. Secondly, in step 1402, the replay device self-interprets the data structure to detect the occurrence of the event, and then, in step 1403, when the event occurs. The AV data is reproduced, and the reproducing device generates a corresponding event. Figure 15 is a flow chart showing an embodiment of Figure 14. Referring to FIG. 15, in step 1501, the decoder 2 of the reproducing device reproduces the video object requested by the user to reproduce, and in step 1502, the rendering engine 3 interprets the API recorded in the corresponding tag file. And transmitting the corresponding parameter 値 to the decoder 2, when the video object unit, or the program chain number and the elapsed time of the specified navigation package including the video title group corresponding to the receiving parameter 侦测 is detected, the decoder will notify the detection of the presentation. The engine 3, the rendering engine 3 will start to reproduce at the corresponding video object unit, or tens of microseconds after the call event handler' to output the specified content on the screen. In addition, in step 1503, the rendering engine 3 outputs the specified content on the screen for a few tens of microseconds after the elapsed time or elapsed time to reproduce the corresponding program chain, and preloads the corresponding 24 if the corresponding event has been preloaded. Preloaded table file for 1271634. In the above embodiment, the event occurs in accordance with the corresponding video title set number (VTSN) and the corresponding navigation pack number NV_PCK_LBN. However, the event may also occur in accordance with other types of data structures such as video object number VOB_ID, VOBU reproduction start time point VOBU_S_PTM, and the like. The reproduction method can be written as a computer program. The computer code and code segment can be easily inferred by a computer programmer who is familiar with the art. In addition, the program is stored in a computer readable recording medium and read and executed by the computer. In order to achieve the record and reproduce the method of marking documents and AV materials. Examples of computer readable recording media include magnetic recording media, optical data storage devices, and carrier media. While the present invention has been described above by way of a preferred embodiment, it is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application. As described above, in the present invention, the event occurrence time point can be more simply specified by the data structure using the existing DVD video and the event occurring at the point in time when the specified event occurs. Therefore, the markup file screen can be more easily synchronized to the AV screen output, that is, since the software timer does not need to be synchronized with the AV screen operation to output the markup file screen, the markup file screen can be outputted more simply, and in addition, it is executed at a specified time point. Preloaded. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram showing a directory structure of an information storage medium according to a preferred embodiment of the present invention; 25 1271634 Figures 2A and 2B show the structure of the reproduction control information of the DVD video directory VIDEOJTS of Figure 1. Figure 3 shows the detailed structure of the video title group in Figure 2A; Figure 4 shows the detailed structure of the navigation package NV-PCK; the stomachs 5 and 6 show the details of the display control information package in Figure 4 Figure 7A, 7B and 8 show the reference diagram of the program chain (PGC); Figure 9A shows the image produced when NV-PCK-LBN is ;; Figure 9B shows when NV-PCK - an image produced when LBN is 丨〇〇〇; FIG. 10 is a block diagram showing a reproducing apparatus according to a first embodiment of the present invention, and FIG. 11 is a reproduction showing a second embodiment according to the present invention Figure 12 is a block diagram showing a detailed description of a program generation event in a reproducing apparatus according to the 10th and 5th drawings of the present invention; Fig. 13 is a flow chart showing a reproducing method according to the present invention; The figure shows an example flow chart of Figure 13; and the 15th 14 illustrates an embodiment based on the flowchart of FIG. Schematic indication Ιϋ 1 reader 2 decoder 3 rendering engine 4 mixer 26 1271634 21 buffer 22 demultiplexer 23 stream decoder 24 system clock reference generator 25 trigger generator 1301~1503 method step 27

Claims (1)

I ^34 middle-aged ^&quot;月V u 嚷1)止本10736pif2 ------ For the Chinese patent scope of No. 92100955, there is no slash correction. This amendment date: August 4, 1994, the scope of application: A computer-readable recording medium that generates an event during media playback, comprising: an AV material having at least one video object composed of a video object unit, each video object unit having an audio package and a video package And a navigation package; and an event occurrence information for generating an event specified according to the data structure of the AV material. 2. The computer readable recording medium of claim 1, further comprising: a mark file for outputting an AV picture from the AV material, wherein the event occurrence information is recorded in the mark file. 3. The computer-readable recording medium according to claim 1, wherein the AV data is recorded as a video title group formed by at least one video object, and the event occurrence information is used when the reproduction corresponds to A trigger event is required when specifying the video object unit of the navigation pack for the video title group. 4. The computer-readable recording medium according to claim 3, wherein when the video object unit corresponding to the navigation package of the specified video title group is reproduced, the event occurrence information requires outputting the specified content on the screen. on. 5. The computer-readable recording medium described in the patent application 4, wherein the content is displayed on a predetermined portion of the markup screen of the reproduction mark file. 6. The computer readable recording medium of claim 4, wherein the event information includes a trigger event identifier, a designated 28 Ι 2716 Μ 6 ρ Ω heading group identifier, and a designated navigation package identifier. 7. The computer readable recording medium of claim 6, wherein the trigger event recognizer provides an application interface for setting a trigger event and an application interface for canceling the trigger event. 8. The computer readable recording medium according to claim 6, wherein the video title set is a video title set number (VTSN), and the navigation package identifier is a guide package number (NV_PCKJLBN) ). 9. The computer readable recording medium of claim 6, wherein the video title set is a video object number of a video title set to which the title is being reproduced, and the navigation package identifier is Reproduce the position determined by the VOBU_S_PTM at the beginning of the video object unit. 10. The computer readable recording medium of claim 6, wherein the video title set identifier is a program chain number (PGCN), and the navigation package identifier is a user experience time (C__ELTM) ) Shows the program chain to reproduce the time or location. 11. The computer readable recording medium of claim 6, wherein the video title set identifier is a title number (TTN), and the navigation package identifier is a time or location for title reproduction. . 12. The computer readable recording medium of claim 7, wherein the application interface comprises, for example, a parameter, the trigger event recognizer, the designated video title set identifier, and the designated navigation package identifier . 13. A method for playing a information storage medium, the information storage medium comprising: one AV material having at least one video object composed of a video object unit, each video object unit having an audio package, a video package and a guide 29 1271634 H) 736pif2 view package; and event generation information for generating a predetermined event, the method comprising: (a) interpreting the event occurrence information; and (b) when decoding the AV material, if the matching step is found (a The data structure of the interpretation result is executed, and an event is generated. 14. The method of claim 13, wherein the step (a) comprises: (al) interpreting event occurrence information in a tag file defining a display window of an AV picture for reproducing a video object; (a2) Detecting where the event that matches the interpretation result occurs. 15. The method of claim 14, wherein the video title comprises at least one video object composed of cells, each having an audio package, a video package and a navigation package, and in step (b) In the case, the AV data reproduces an event when a portion corresponding to the location where the event occurs. 16. The method of claim 15, wherein in step (b), the specified content is output when the video object unit corresponding to the navigation pack of the specified video title set is reproduced or a few microseconds thereafter. On the screen. 17. The method of claim 13, wherein the event information includes a trigger event identifier, a specified video title set identifier, and a designated navigation package identifier. 18. The method of claim 17, wherein the trigger event identifier comprises an identifier that sets a trigger event and an identifier that cancels the trigger event. 19. The method of claim 13, wherein the event is 30 Ι 2716 〇 4 Ρ, and the occurrence information is implemented by an application interface. 20. The method of claim 19, wherein the application interface has parameters such as a trigger event recognizer, a specified video title set identifier, and a specified navigation package identifier. 21. An apparatus for playing an information storage medium, the information storage medium comprising: one AV material having at least one video object composed of a video object unit, each video object unit having an audio package, a video package, and a navigation package; and event information for generating a predetermined event, the device comprising: a reader for reading the AV data or the event occurrence information; a rendering engine for interpreting the read Event generation information, outputting an interpretation result and generating an event; and a decoder for requesting the rendering engine to generate an appropriate data structure when the AV data is decoded, if it is found to be consistent with the interpretation result received from the rendering engine The event. 22. The apparatus of claim 21, wherein the rendering engine interprets event occurrence information in a tag file defining a display window for displaying an AV picture that reproduces the AV material. 23. The apparatus of claim 22, wherein the rendering engine generates an event when the AV material corresponding to the navigation package of the specified video title set is reproduced. The apparatus of claim 23, wherein the rendering engine outputs the specified content on the screen when the video object unit corresponding to the navigation pack of the specified video title set is reproduced or after several tens of microseconds. The device of claim 24, wherein the event occurrence information is implemented by an application interface. 26. The device of claim 25, wherein the application interface comprises a trigger event identifier, a specified video title set identifier, and a designated navigation package identifier. 27. The device of claim 26, wherein the trigger event identifier comprises an identifier for setting a trigger event and an identifier for canceling a trigger event. 32