WO2010082728A2 - Procédé de commande av de support de stockage de type disque blu-ray java (bd-j) - Google Patents

Procédé de commande av de support de stockage de type disque blu-ray java (bd-j) Download PDF

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Publication number
WO2010082728A2
WO2010082728A2 PCT/KR2009/007534 KR2009007534W WO2010082728A2 WO 2010082728 A2 WO2010082728 A2 WO 2010082728A2 KR 2009007534 W KR2009007534 W KR 2009007534W WO 2010082728 A2 WO2010082728 A2 WO 2010082728A2
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WIPO (PCT)
Prior art keywords
playitem
file
reading
time
information
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PCT/KR2009/007534
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English (en)
Korean (ko)
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WO2010082728A3 (fr
Inventor
홍형진
이호섭
윤민주
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(주)칩얼라이브
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Publication of WO2010082728A2 publication Critical patent/WO2010082728A2/fr
Publication of WO2010082728A3 publication Critical patent/WO2010082728A3/fr

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    • 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
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • 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
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • 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
    • 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
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs

Definitions

  • the present invention relates to an AV (audio visual) control technology of a Blu-ray Disc Java (BD-J) storage medium.
  • BD-J Blu-ray Disc Java
  • BD-ROM disc made of a Blu-ray disk java (BD-J) method based on the Java platform.
  • Blu-ray Disc Java (BD-J) storage that provides a user interface screen to control the playback of video content by accessing the video-audio stream directly without using a Java virtual machine when playing video content from a storage medium such as AV control technology of a medium.
  • Blu-ray discs are next-generation optical disc storage media specifications that are read using a 405 nm blue violet semiconductor laser beam. That is, reading is performed using a light beam having a narrower wavelength interval than the 650 nm red laser light used in conventional DVDs, and up to 27 GB of data can be recorded on one side of a disc. This corresponds to 13 hours of general movie and 2 hours of high-definition (HD) TV quality.
  • HD high-definition
  • Blu-ray chooses MPEG2 Transport Stream based on MPEG2 as its compression method, and its data transfer rate is 36Mbps, which is 4 to 5 times faster than conventional DVD-ROM. Due to the high data rate, HD broadcasts can be recorded directly from digital cameras or broadcasts without any loss of audio / video quality.
  • Blu-ray Disc Java stands for the Java platform for Blu-ray Disc players. This is because the Blu-ray Society has adopted JAVA as the underlying platform for Blu-ray Disc environments. BD-J operates on the basis of DVB-GEM, which includes the Multimedia Home Platform (DVB-MHP).
  • DVB-GEM which includes the Multimedia Home Platform (DVB-MHP).
  • FIG. 1 is a diagram schematically illustrating a process of reproducing a BD-ROM manufactured by the BD-J method through a Java virtual machine.
  • the Blu-ray player runs a BD-J Xlet application written in Java to issue processing instructions.
  • a BD-J Xlet application's processing command is transmitted to a Java virtual machine (JVM)
  • JVM interprets this to control the playback control engine of the Blu-ray Disc (BD).
  • the BD-J mode it is possible to provide much more functions and a colorful graphic environment than the menu for playing video contents provided in the conventional DVD-ROM.
  • the user can click on the screen to enjoy related online shopping, and it is possible to implement an interactive application such as chatting with other users.
  • An object of the present invention is to eliminate the need to read a variety of additional information for using the Java virtual machine from the BD-J ROM, thereby reducing the boot time of the disc and the preparation time for playing the video content, and without using the Java virtual machine It also provides AV control technology for Blu-ray Disc Java (BD-J) storage media that provides a user interface screen similar to that of playback-related navigation in Java.
  • BD-J Blu-ray Disc Java
  • the AV control method of the Blu-ray Disc Java storage medium comprises the steps of: (A) directly reading a file including the AV reproduction information from a BD-J (Blu-ray Disc Java) storage medium to obtain the AV reproduction information; (B) generating a user selection menu comprising one or more selection items; (C) generating a plurality of selection lists according to the selection items based on the AV reproduction information; (D) displaying a user selection menu via display means; (E) if one of the selection items of the user selection menu is selected through the user input means, displaying a plurality of selection lists according to the selection items through the display means; And (F) if one of the selection list is selected, controlling the reproduction environment setting and the AV reproduction based on the corresponding AV reproduction information.
  • step (A) comprises: reading a playlist file from a BD-J storage medium; Reading the contents of one or more playitems included in the playlist file, and recognizing start time and end time of the clip file information corresponding to each playitem and the playitem corresponding to each playitem in the clip file; And acquiring a playback time corresponding to the playitem from the start time and the end time, and accumulating the playtime to calculate the actual playtime of each playitem, wherein step (B) is performed. And generating a selection item (hereinafter, referred to as an 'AV playback time selection item') having a selection list in which time points are reproduced in time order.
  • an 'AV playback time selection item' having a selection list in which time points are reproduced in time order.
  • step (F) when one of the playback points listed in the selection list constituting the AV playback point selection item is selected, the playitem corresponding to the playback point is selected. Reading the included playlist file; Recognizing a playitem corresponding to a playback time included in the playlist file; Reading a clip file corresponding to the playitem and reading AV stream file time information corresponding to a start time and an end time of the playitem from the clip file; And reading the AV stream file corresponding to the clip file and reproducing the section corresponding to the AV stream file time information.
  • step (A) includes reading a playlist file from a BD-J storage medium and reading the contents of a playitem included in the playlist file; Reading a clip file corresponding to the playitem; And extracting audio information including at least one of a selectable number of audios, compression information of each audio, and language information of each audio from a clip file, wherein step (B) is based on audio information.
  • step (F) includes: And reading and playing the corresponding audio stream.
  • step (A) includes reading a playlist file from a BD-J storage medium and reading the contents of a playitem included in the playlist file; Reading a clip file corresponding to the playitem; And extracting caption information including at least one of a selectable number of subtitles and language information of each subtitle from a clip file;
  • Step (B) comprises: generating a subtitle selection item having a selection list for a plurality of subtitle settings based on the subtitle information; and (F) step, if one of the subtitle settings is selected, AV playback is performed. And reading out and outputting a text subtitle stream corresponding to the selected subtitle setting from the AV stream at a time.
  • step (A) comprises: reading a playlist file from a BD-J storage medium; Reading the contents of one or more playitems included in the playlist file, and recognizing start time and end time of the clip file information corresponding to each playitem and the playitem corresponding to each playitem in the clip file; Obtaining a playback time corresponding to the playitem from the start time and the end time; Recognizing the playitem having the longest playback time as one of the main videos, and classifying the main video and the featured video based on at least one of a play time of each playitem and a capacity of an AV stream file corresponding to the playitem; And calculating the actual playback time of the playitem by accumulating the playing time of the playitem classified as the feature video, and (B), the playback time of the playitem classified as the feature video is in chronological order. And generating a selection item (hereinafter,
  • step (A) reads a clip file corresponding to each playitem, and audio information and subtitle information included in the clip file are set to a predetermined standard or more. If so, classify as a main image, otherwise classify as a featured image; preferably comprises a further comprising.
  • step (F) if one of the playback points listed in the selection list constituting the selected video playback point selection item is selected, a playitem corresponding to the playback point is selected. Reading the included playlist file; Recognizing a playitem corresponding to a playback time included in the playlist file; Reading a clip file corresponding to the playitem and reading AV stream file time information corresponding to a start time and an end time of the playitem from the clip file; And reading the AV stream file corresponding to the clip file and reproducing the section corresponding to the AV stream file time information.
  • FIG. 1 is a view schematically showing a process of playing a BD-ROM made by the BD-J method through a Java virtual machine
  • FIG. 2 is a view schematically showing a process of directly playing a BD-ROM made by the BD-J method through an AV control method according to the present invention without using a Java virtual machine;
  • FIG. 3 is a screen showing a selection item for selecting an AV playback time point among user selection menus according to the present invention
  • FIG. 4 is a diagram illustrating a method of recognizing a selection section on a playitem basis in FIG. 3;
  • FIG. 5 is a screen showing a selection item for selecting an audio setting among a user selection menu according to the present invention.
  • FIG. 6 is a screen showing a selection item for selecting a subtitle setting among a user selection menu according to the present invention.
  • FIG. 7 is a screen showing a selection item for selecting a playback time of a feature video among user selection menus according to the present invention.
  • FIG. 2 is a diagram schematically illustrating a process of directly playing a BD-ROM manufactured by the BD-J method through an AV control method according to the present invention without using a Java virtual machine.
  • the present invention reproduces image content by directly reading data stored in the BD-J mode without using Java.
  • a user of a Blu-ray player device inserts a BD-ROM disc produced by the BD-J method into a Blu-ray player. Or a command to read the BD-J data of the BD-J method stored in the Blu-ray player's internal hard disk.
  • the BD-ROM data may be in a form of a disk-type storage medium, but may also be stored in a data form on a storage medium of another type other than a disk.
  • BD-ROM data has a "BDMV” directory in the root directory, and a "BDMV” directory includes a "PLAYLIST” directory, a "CLIPINF” directory, a "STREAM” directory, an "AUXDATA” directory, and a "BACKUP” directory.
  • the "BDMV” directory contains a "index.bdmv” file containing the contents of the "BDMV” directory and a "MovieObject.bdmv” file containing information about one or more movie objects.
  • the "PLAYLIST” directory stores playlist files of the form "xxxxx.mpls” containing information about movie playlists.
  • the "CLIPINF” directory stores clip files of "zzzzz.clpi” type that contain clip information corresponding to the AV stream file.
  • the "STREAM” directory stores AV stream files of the form "zzzzz.m2ts" containing video, audio, graphics, and text subtitles. That is, data corresponding to the actual video content is stored.
  • the clpi file and the m2ts file correspond to each other with files of the same name, and the clpi file contains clip information about the m2ts file.
  • the Blu-ray player device When the Blu-ray player device starts to read the BD-J storage medium, it immediately starts to read the data portion without reading the front part of the data containing the Java class information. That is, the file containing the AV reproduction information is read directly, and the AV reproduction information is obtained therefrom.
  • the Blu-ray player device generates a user selection menu with reference to the acquired AV playback information.
  • the user selection menu includes an AV playback point selection item, an audio selection item, a subtitle selection item, a special video selection item, and the like, and provides a selection menu that is similar to the user selection menu provided in the existing Java mode.
  • Each selection item of the user selection menu includes a plurality of selection lists based on the AV reproduction information previously obtained. That is, the Blu-ray player device acquires the AV playback information and generates a selection list according to each selection item while generating a user selection menu.
  • the Blu-ray player device After the Blu-ray player device generates the user selection menu through the above process, the Blu-ray player device displays the user selection menu to the user.
  • a user selection menu is displayed on the user interface screen, and when a user selects each selection item of the user selection menu, a plurality of selection lists according to the selected selection item are displayed on the screen.
  • An example of the selection list according to each selection item is shown in Figs. 3, 5, 6 and 7 below.
  • the user selection menu does not need to provide a colorful graphic effect as provided by the existing Java class.
  • BD-ROMs produced in the BD-J mode generally store various snapshots and image files in advance.
  • the process of reading out this kind of data is omitted and the minimum playback time information and various options are selected. It can be implemented to provide a menu.
  • the Blu-ray player device controls the reproduction environment setting or the AV reproduction based on the AV reproduction information previously obtained.
  • FIG. 3 is a screen showing a selection item for selecting an AV playback time point among user selection menus according to the present invention.
  • AV playback point selection items In the user selection menu, AV playback point selection items, audio selection items, subtitle selection items, and special video selection items are displayed.
  • the current user selects an AV playback point selection item, and a selection list for various playback points is displayed on the screen as a popup window. Is indicated.
  • the playback point selection list can be displayed in the order of C01, C02, C03, ... in chronological order, and the playback point is indicated in hours, minutes and seconds next to the playback point name so that the user can select the playback point. .
  • the pages are divided so that the pages can be moved forward and backward to be selected.
  • FIG. 4 is a diagram illustrating a method of recognizing a selection section on a playitem basis in FIG. 3.
  • clip information for an AV stream file having the same file name is stored in the clip file.
  • the clip information includes time information on the AV stream file, and thus the playback time of the video data and the audio data contained in each AV stream file can be calculated.
  • the playlist file includes one or more playitems, and a start point and an end point of each playitem correspond to a predetermined section in the clip file.
  • the playitem and the clip file do not necessarily correspond to each other in sequence, and unlike the arrangement order of the clip files, the playitem and the clip file may be arbitrarily corresponding. That is, the playlist file can be configured by editing any section in the AV stream file in any order rather than in a time series according to the selection of the BD-ROM producer.
  • the Blu-ray player device starts reading BD-ROM data of the BD-J type
  • the Java class information is not skipped and read, and the playlist files stored in the "PLAYLIST” directory and the clip files stored in the "CLIPINF” directory are read. Read to create an AV playback point selection item.
  • the playlist file is read from the BD-J storage medium, and the contents of the playitem included in each playlist file are read.
  • the clip file information corresponding to each playitem is read to find a corresponding clipfile, and the playitem recognizes a start time and end time corresponding to each other in the clipfile.
  • the playback time of each playitem is obtained from the previously recognized start time and end time, and the playback time is accumulated in order to calculate the actual playtime of each playitem.
  • a selection item having a selection list in which the playing time points of the play items calculated above are arranged in chronological order is generated. This is called an 'AV playback point selection item'.
  • the user may select the AV playback time through the input means.
  • the Blu-ray player device reads the playlist file including the playitem corresponding to the selected playback point.
  • the playitem corresponding to the previously selected playback time point is recognized, and the clip file corresponding to the playitem is read.
  • the AV stream file time information corresponding to the start time and end time of the playitem is read from the read clip file.
  • FIG. 5 is a screen showing a selection item for selecting an audio setting among a user selection menu according to the present invention.
  • a selection list for a plurality of audio settings is displayed on the screen as a popup window.
  • the Blu-ray player device reads the playlist file in the BD-J storage medium and reads the contents of the playitem included in the playlist file before displaying the user selection menu on the screen.
  • the clip file corresponding to each playitem is read.
  • the clip file stores audio information including the number of selectable audios, compression information of each audio, language information of each audio, and the like. Therefore, by extracting the audio information from the clip file, the audio information supported by the Blu-ray content currently in use can be obtained.
  • an audio selection item having a selection list for a plurality of audio settings is generated based on this. That is, only some representative settings of the possible audio settings may be implemented, or a combination of all possible audio settings may be presented.
  • the audio stream corresponding to the selected audio setting is read from the AV stream file to play the audio stream during AV reproduction.
  • FIG. 6 is a screen showing a selection item for selecting a subtitle setting among a user selection menu according to the present invention.
  • a subtitle selection item is selected from the user selection menu displayed on the screen, a selection list for a plurality of subtitle settings is displayed on the screen in a popup window.
  • Subtitle information is also stored in the clip file just like audio settings.
  • the subtitle information is obtained by reading the clip file.
  • the Blu-ray player device reads the playlist file in the BD-J storage medium and reads the contents of the playitem included in the playlist file before displaying the user selection menu on the screen.
  • the subtitle information includes the number of selectable subtitles, language information of each subtitle, and the like.
  • a caption selection item having a selection list for a plurality of caption settings is generated based on the caption information.
  • the subtitle may be set based on a representative language, or may be implemented to select all possible subtitle types.
  • the text subtitle stream according to the selected subtitle setting is read from the AV stream file to display the subtitle at the time of AV reproduction.
  • FIG. 7 is a screen showing a selection item for selecting a playback time of a feature video among user selection menus according to the present invention.
  • the Blu-ray content further includes a special video (or additional video) including a production, shooting, editing process, and advertisement for making the main video. have. Therefore, the playback time should be selected by dividing the main video and the special video.
  • the present invention is an implementation method that does not use Java, it should be implemented to directly distinguish and process the main image and the featured image.
  • the AV playback time selection item described above with reference to FIGS. 3 and 4 corresponds to a playback time selection item of the main video, and FIG. 7 shows a playback time selection item of the featured video.
  • the playback time selection list can be displayed in the order of F01, F02, F03, ... in order of time, and the playback time is expressed in hours, minutes and seconds.
  • a menu is constructed so that the user can go to the previous page and select the page.
  • the main video has a longer playback time and a larger data capacity than the featured video.
  • the special video does not support various audio settings and subtitle settings as provided in the main video. Therefore, the main image and the featured image are distinguished based on these differences.
  • the playitem having the longest playtime is recognized as one of the main images by referring to the playtime of each playitem previously obtained.
  • the main video and the special video are classified based on the playback time of each playitem and the capacity of the AV stream file corresponding to the playitem.
  • the main video and the special video may be distinguished by statistically classifying a group having a larger file size and a smaller group than the playback time.
  • pattern classification that classifies two groups by finding a statistical distribution of the play time of each playitem and a statistical distribution of the capacity of the AV stream file. You can also use the method.
  • classification of the main video and the special video may be error based only on the playing time and the file size, additional audio information and subtitle information may be considered as classification criteria.
  • a clip file corresponding to each playitem is read, and audio information or subtitle information included in the clip file is recognized.
  • the main image may be classified by weighting the main image. Otherwise, the audio information and subtitle information may be classified by weighting the featured video.
  • the main image and the featured image are classified. It should be noted that in the classification process, it is desirable to establish a fluid criterion relative to the rest of the other playitems rather than to establish an absolute classification criterion.
  • the playback time selection process of the main video is performed through the process of FIG. 4 above, targeting only the playitems classified as the main video.
  • the playback time of each playitem is accumulated only for the playitem classified as the featured video to calculate the actual playback time of each playitem. Then, a selection item having a selection list in which these playback points are arranged in chronological order is generated. This will be referred to as a 'selected item playback time selection item'.
  • a user may select a playback time of the featured video through an input means.
  • the Blu-ray player device reads the playlist file including the playitem corresponding to the selected playback point.
  • the playitem corresponding to the previously selected playback time point is recognized, and the clip file corresponding to the playitem is read.
  • the AV stream file time information corresponding to the start time and end time of the playitem is read from the read clip file.
  • the special video content at the playback time point selected by the user is reproduced by reading the AV stream file corresponding to the clip file and reproducing the section corresponding to the AV stream file time information.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

La présente invention concerne une technologie de commande AV pour un support de stockage de type disque Blu-ray Java (BD-J) et en particulier une technologie de commande AV pour un support de stockage de type disque Blu-ray Java (BD-J) qui fournit un écran d'interface utilisateur, selon laquelle lorsque des contenus vidéo sont diffusés à partir d'un support de stockage de type disque BD-ROM au format BD-J (disque Blu-ray Java), la diffusion du contenu vidéo peut être commandée par accès au flux vidéo-audio directement, sans utiliser de machine virtuelle Java. Selon l'invention, étant donné qu'une grande quantité d'informations supplémentaires associées à Java qui ont été stockées dans le support de stockage BD-J à l'avance ne doivent pas être lues, la lecture rapide du contenu vidéo peut être exécutée de manière efficace. L'invention permet également de fournir un écran d'interface utilisateur presque identique à l'écran de navigation associée à la lecture présent dans l'environnement Java, sans utiliser de machine Java virtuelle.
PCT/KR2009/007534 2009-01-19 2009-12-16 Procédé de commande av de support de stockage de type disque blu-ray java (bd-j) WO2010082728A2 (fr)

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Application Number Priority Date Filing Date Title
KR10-2009-0004331 2009-01-19
KR1020090004331A KR100951015B1 (ko) 2009-01-19 2009-01-19 블루레이 디스크 자바(ｂｄ-ｊ) 저장매체의 ａｖ 제어방법

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WO2010082728A2 true WO2010082728A2 (fr) 2010-07-22
WO2010082728A3 WO2010082728A3 (fr) 2010-09-02

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050057883A (ko) * 2003-12-11 2005-06-16 엘지전자 주식회사 고밀도 광디스크의 파일 구성방법 및 재생방법과기록재생장치
KR20050066265A (ko) * 2003-12-26 2005-06-30 엘지전자 주식회사 고밀도 광디스크의 메뉴 구성방법 및 실행방법과기록재생장치
KR20070054187A (ko) * 2004-09-13 2007-05-28 엘지전자 주식회사 기록 매체 및 기록 매체로부터 데이터를 재생하는 방법 및장치
KR20070058147A (ko) * 2005-12-01 2007-06-07 삼성전자주식회사 멀디미디어 컨텐츠 재생 방법 및 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050057883A (ko) * 2003-12-11 2005-06-16 엘지전자 주식회사 고밀도 광디스크의 파일 구성방법 및 재생방법과기록재생장치
KR20050066265A (ko) * 2003-12-26 2005-06-30 엘지전자 주식회사 고밀도 광디스크의 메뉴 구성방법 및 실행방법과기록재생장치
KR20070054187A (ko) * 2004-09-13 2007-05-28 엘지전자 주식회사 기록 매체 및 기록 매체로부터 데이터를 재생하는 방법 및장치
KR20070058147A (ko) * 2005-12-01 2007-06-07 삼성전자주식회사 멀디미디어 컨텐츠 재생 방법 및 장치

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WO2010082728A3 (fr) 2010-09-02

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