CN1781148B - 具有管理图形数据再现的数据结构的记录介质以及记录和再现的方法和装置 - Google Patents

具有管理图形数据再现的数据结构的记录介质以及记录和再现的方法和装置 Download PDF

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CN1781148B
CN1781148B CN2004800117541A CN200480011754A CN1781148B CN 1781148 B CN1781148 B CN 1781148B CN 2004800117541 A CN2004800117541 A CN 2004800117541A CN 200480011754 A CN200480011754 A CN 200480011754A CN 1781148 B CN1781148 B CN 1781148B
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CN1781148A (zh
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金炳振
H·S·金
J·H·杨
徐康洙
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LG Electronics Inc
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    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
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    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H04N9/8233—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being a character code signal

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Abstract

在用于管理图形数据的再现的数据结构中，记录介质的图形信息区域包括：至少一个显示信息段和至少一个颜色信息段，每个显示信息段提供用于整个显示器的信息而不仅仅是一个显示区，每个显示信息段包括用于识别颜色信息族的颜色信息族标识符，颜色信息段提供属于所识别的颜色信息族的颜色信息。

Description

具有管理图形数据再现的数据结构的记录介质以及记录和再现的方法和装置
(1)技术领域
本发明涉及一种用于管理和再现高密度光盘的图形数据的方法。
(2)背景技术
最近，类似DVD(数字多功能盘)的光盘以及用于从这些光盘再现和向这些光盘记录数据的类似于DVD记录器和DVD播放器的光盘装置已被积极地开发和商业化。这些光盘能存储大量高分辨率视频数据和高保真的音频数据。
一般，DVD存储主视频数据以及有时被称为副标题数据的图形数据。一般，副标题数据被理解为可以位图图像表示的文本或字幕数据。然而，由于这类副标题数据是图像数据，诸如欧洲视频广播标准ETSI EN300 743 V1.2.1的某些标准将副标题数据定义成文本和/或图形信息以提供副标题或图形。在所公开的内容中，术语“图形数据或图形信息”可替换地用于术语“副标题数据”以指代文本和/或图形信息。在DVD中，诸如字幕或标识的副标题数据以图像数据格式记录，并当再现时与主视频数据合成在一起。换句话说，当再现DVD时，类似DVD播放器的光盘再现装置将副标题图像数据与主视频数据一起从DVD读出，并将它们输出到类似于电视接收器的外部显示装置上，由此产生和显示合成后的图片。
因此，用户能同时通过外部显示装置看到类似图片图像的再现的主视频数据，以及类似字幕或标识的副标题数据。
就在最近，类似BD-ROM的比传统DVD具有更高记录密度的高密度光盘被推出，并在业内引发了对这种新推出的高密度光盘的标准化的争论。例如，推荐了一种方法，用于以图像数据格式(比如位图(BMP)数据)记录和管理BD-ROM的图形副标题数据及其再现控制信息。
然而，仍然没有提供充分的数据结构或方法以管理记录在BD-ROM上的副标题图像数据的再现。为了加快新推出的类似BD-ROM的高密度光盘的商业化，所要求的不仅是用于记录数据结构的记录介质数据结构及方法，还有用于再现副标题数据的有效方法。
(3)发明内容
本发明的记录介质包括用于管理图形数据再现的数据结构。
在一个实施例中，记录介质包括图形信息区，该图形信息区包括至少一个图形信息段和至少一个对象数据段。每个对象数据段提供用于重现至少一部分图形图像对象的数据。每个图形信息段包括：对象识别符以及对象剪接标志。对象识别符识别图形图像对象，而对象剪接标志表示图形信息段是否包括用于所标识的图形图像对象的剪接信息。
在另一实施例中，记录介质具有包括至少一个显示信息段和至少一个颜色信息段的图形信息区。每个显示信息段提供用于整个显示器的信息而不仅仅是显示器的一个区域。每个显示信息段包括用于识别颜色信息族的颜色信息族识别符，颜色信息段提供属于经识别的颜色信息族的颜色信息。
在该实施例中，图形信息区还可包括至少一个对象数据段，该对象数据段提供数据以再现至少一部分图形图像对象。这里，显示信息段包括识别图形图像对象的对象识别符。
本发明还提供用于记录和再现本发明的数据结构并记录和再现本发明的数据流的装置和方法。
(4)附图说明
通过结合附图的下面的详细说明，本发明的上述的以及其它的目的、特征和优点将变得更容易理解。
图1示出一个屏幕的图例，根据本发明一个实施例，在该屏幕中，也被称为副标题数据的多个图形数据对象被显示在单个页面上；
图2示出本发明一个范例性实施例的分级页面结构；
图3示出本发明的记录在高密度记录介质上的页面组成段的数据结构的一个范例性实施例；
图4示出本发明的记录在高密度记录介质上的对象数据段的数据结构的一个范例性实施例；
图5示出本发明的记录在高密度记录介质上的颜色查找表定义段的数据结构的一个范例性实施例；
图6示出可适用于本发明的用于再现高密度光盘的副标题数据的方法的光盘装置的一个范例性实施例；
图7示出本发明的光盘记录和再现装置的实施例的示意图。
(5)具体实施方式
诸如BD-ROM的高密度记录介质能够将位图(BMP)格式之类格式的图像数据存储为副标题数据(例如，字幕或标识)。在所公开的内容中，术语“图形数据”或“图形信息”可替换地用于术语“副标题”以指代文本和/或图形信息。在DVD中，诸如字幕或标识的副标题数据以图像数据的格式记录并当再现时与主视频数据合成。换句话说，当再现DVD时，类似DVD播放器的光盘再现装置将副标题图像数据与主视频数据一起从DVD读出，并将它们输出到类似于电视接收器的外部显示装置上，由此产生和显示合成后的图片。
图1示出一个屏幕的图例，根据本发明一个实施例，在该屏幕中，也被称为副标题数据的多个图形数据对象被显示在单个页面上。如图所示，诸如BMP格式的字幕或标识数据的多种类型的图像数据或副标题数据可作为不同对象再现和显示在同一显示屏上(即在同一单个页面中)。例如，图1示出对象1、对象2和对象3。如下面将详细说明的那样，以分级页面结构记录并管理每个对象以及页面，由此可在单个页面中包含和管理多个对象。
图2示出本发明的一个范例性实施例的分级的页面结构。如图所示，以单个页面形式管理诸对象。该页面结构还包括和管理颜色查找表CLUT1和CLUT2，用于控制每个对象图像的颜色、亮度和透明度的再现。每个颜色查找表可仅与一个对象图像或与多个对象图像形成链接。另外，也可使用公共地链接于多个页面的全局颜色查找表。
对象图像及其再现控制信息可分别记录在页面组成段(PCS)、对象数据段(ODS)以及颜色查找表定义段(CDS)中并由它们管理，分别如图3至图5所示，并在下面详细说明。
图3示出本发明的记录在高密度记录介质上的页面组成段的数据结构的一个范例性实施例。如图所示，页面组成段可包括关于同步字节的信息、段类型、页面标识(ID)、段长度、页面超时以及页面版本号。同步字节是一种包含用于同步校验的值的公知字段。段类型信息表示相应的段是页面组成段，而页面ID信息表示相应的页面是副标题页面。例如，页面ID可表示副标题页面适合于特定的语言(诸如韩语或英语)。段长度表示跟随页面版本号之后的字段的长度。页面超时信息是用于从缓冲器中删除相应页面的缓冲数据的信息。页面版本号表示PCS的版本。
页面组成段还包括与颜色查找表(CLUT)ID、对象ID、对象类型、对象提供商标志、对象剪接标志、对象水平/垂直位置相关的信息。
CLUT ID识别与该PCS相关的CLUT族。对象ID识别将要呈现在页面(即显示屏幕)上的对象。对象类型表示对象的类型(即位图、字符、字符串等)。对象提供商标志表示如何提供由对象ID所识别的对象；例如以副标题数据流形式提供。对象剪接标志表示PCS是否包括用于定义剪接由对象ID所识别的对象的区域的剪接信息。例如，在对象剪接标志信息被设置为“1”时，对象剪接标志信息可包括对象水平/垂直剪接数据和对象剪接宽度/长度数据。对象水平/垂直剪接数据和对象剪接宽度/长度数据被记录以部分地显示对象图像。具体来说，对象水平/垂直剪接信息规定剪接矩形(剪接区域)的位置，该剪接矩形具有由对象剪接宽度/长度提供的尺寸。仅将显示位于剪接矩形内的那么多的对象。
PCS同样包括对象水平/垂直位置信息，它表示在显示屏上由对象ID所识别的对象的位置。
接下来将参阅图4说明对象数据段的数据结构的范例性实施例。如图4所示，对象数据段可包括与同步字节、段类型、页面ID、段长度以及后进先出顺序(last-in sequence)相关的信息。同步字节提供用于同步检验的值。段类型信息表示该段是对象数据段，而页面ID信息表示相应的段所属的页面。段长度表示跟随后进先出顺序字段之后的段的长度。后进先出顺序信息表示这是否是需要再现图形图像对象的最近的ODS，该ODS对该图形图像对象提供图形图像数据。可以理解的是，可采用一个以上的图形图像数据的ODS价值以形成图形图像对象。
另外，对象数据段可包括与对象ID、对象版本号以及对象编码方法相关的信息。对象ID识别图形图像对象。该对象ID将与管理所识别的图形图像对象的显示的PCS中对象ID相同。对象版本号表示在该ODS中的图形图像数据的版本。对象编码方法表示图形图像对象被编码成图形图像数据(即位图像素、字符码等)的方法。
在一范例性实施例中，当对象编码方法为“00”时，ODS包括表示对象的顶部字段数据数量的顶部字段数据块长度，表示对象的底部字段数据数量的底部字段数据块长度，以及表示图形图像对象的行程长度编码的顶部字段数据和底部字段数据的像素数据子块。在另一个范例性实施例中，对象数据是字符码，对象编码方法记录为“01”，且记录编码和各字符码的数量。
图5示出本发明的记录在高密度记录介质上的颜色查找表定义段的数据结构的一个范例性实8施例。如图所示，颜色查找表定义段(CDS)包括与同步字节、段类型、页面ID、段长度、颜色查找表(CLUT)ID以及颜色查找表(CLUT)版本号相关的信息。同步字节提供用于同步校验的值。段类型信息表示该段是颜色查找表定义段，而页面ID信息表示相应的段所属的页面。段长度表示跟随CLUT版本号字段之后的段的长度。CLUT ID信息表示CDS所属的CLUT族。如下面将详细说明的那样，CDS提供单色定义。CLUT族提供调色板，通过它选择颜色定义。CLUT版本号表示CDS的版本。
颜色查找表定义段还可包括与颜色查找表表项ID、亮度值(Y值)、红颜色值(Cr值)、蓝颜色值(Cb值)以及透明度值(T值)相关的信息。CLUT表项ID在该CDS所属的CLUT族中(由CLUT ID所识别)识别该CDS的表项。
图6示出可适用于本发明的用于再现高密度光盘的副标题数据的方法的光盘装置的一个范例性实施例，该光盘装置包括：解多路复用器(DEMUX)110、缓冲器111、113和115、页面选择器112、解码器114、图形生成器116、控制器117以及A/V处理器120。
DEMUX 110根据分组ID(PID)信息将副标题或图形数据和A/V数据从诸如读取自光盘的传输流的数据流中分离。A/V处理器120执行一系列处理，诸如将分离后的A/V数据解码并将解码后的音频/视频信号输出。
分离后的副标题数据被暂存在缓冲器111中并被提供到页面选择器112中。页面选择器112选择性地输出特定的副标题数据，即页面组成段(PCS)、对象数据段(ODS)以及颜色查找表定义段(CDS)。当页面ID信息对应于特定语言的字幕或标识数据时，用户将已经选择所要求的语言，且这种选择将已经被提供到页面选择器112。页面选择器112选择具有与用户选择相匹配的页面ID的PDS、ODS和CDS。
所选择的页面组成段(PCS)、对象数据段(ODS)以及颜色查找表定义段(CDS)被暂存在缓冲器113中，然后被提供到解码器114。解码器114执行一系列解码步骤以解码诸段。这时，包括在对象数据段(ODS)中的图像数据被暂存于缓冲器115中，然后被提供到图形生成器116。
另一方面，包括在页面组成段(PCS)中的再现控制信息和颜色查找表定义段(CDS)被提供到控制器117。控制器117执行一系列控制步骤以参照再现控制信息对图形生成器116的操作进行控制。
因此，图形生成器116生成并输出与包括在页面组成段(PCS)中的再现控制信息和颜色查找表定义段(CDS)对应的副标题的图形图像。如图所示，副标题的图形图像作为副标题图像与通过A/V处理器120再现的主视频图像一起被显示出。
图7示出本发明的光盘记录和再现装置的实施例的示意图。如图所示，AV编码器9接收并编码数据(如静态图像数据、音频数据、文本副标题数据等)。AV编码器9将经编码的数据与编码信息、数据流属性信息一起输出。多路复用器8基于编码信息和数据流流属性信息将经编码的数据多路复用以产生例如MPEG-2传输流。源分组器7根据光盘的音频/视频格式将来自多路复用器8的传送分组分组成源分组。如图7所示，AV编码器9、多路复用器8以及源分组器7的操作由控制器10控制。控制器10接收关于记录操作的用户输入，并对AV编码器9、多路复用器8以及源分组器7提供控制信息。例如，控制器10指示AV编码器9执行编码的类型，指示多路复用器8要创建的传输流，并指示源分组器7源分组的格式。控制器10还控制驱动器3将来自源分组器7的输出记录在光盘上。
例如，基于通过用户接口所接收的信息(例如保存在盘上的、通过计算机系统提供在内联网和互联网上的指令)，控制器10控制驱动器3将图3至图5的一种或多种数据结构记录在光盘上。
在再现过程中，控制器10控制驱动器3重现这种数据结构。基于包含在内的信息以及从用户接口(如记录和再现装置或与该装置关联的遥控器上的控制按钮)接收的用户输入，控制器10控制驱动器3以再现来自光盘的数据。
被再现的源分组被源解分组器4接收并转换成数据流(如MPEG-2传送分组流)。解多路复用器5将数据流多路分解为编码的数据。AV解码器6解码经编码的数据以生成送至AV编码器8的原始数据。在再现过程中，控制器10控制源解分组器4、解多路复用器5和AV解码器6的操作。控制器10接收关于再现操作的用户输入，并将控制信息提供给AV解码器6、解多路复用器5和源解分组器4。例如，控制器10指示AV解码器9所执行解码的类型，指示解多路复用器5要多路分解的传输流并指示源解分组器4源分组的格式。可以理解的是，可根据图6中详细描述的物理结构构造该实施例的逻辑块。
尽管图7是作为记录和再现装置进行描述的，但要知道采用提供记录或再现功能的图7的那些部分也可仅实现记录装置或再现装置。
根据本发明诸实施例的用于管理高密度记录介质上的副标题数据的数据结构和方法允许对副标题数据的再现的有效管理。
通过上述说明所清楚知道的是，本发明提供用于将一种数据结构记录在高密度记录介质上用于管理副标题数据再生的方法和装置。
上面的描述还提供用于基于管理副标题数据的再现的数据结构而再现副标题数据的方法和装置。
尽管已就有限数量的实施例对本发明进行了公开，但本领域内技术人员利用所公开的内容能够知晓由此产生的多种修正和改变。例如，尽管在多个例子中描述的是蓝光(Blu-ray)ROM光盘，本发明不局限于这种光盘标准或这种光盘，它旨在将所有这类修正和改变囊括到本发明的精神和范围中。

Claims (13)

1.一种记录用于管理图形数据再现的数据结构的方法，包括：
在图形信息区中记录至少一个图形信息段和至少一个对象数据段，每个对象数据段提供用于重现至少一部分图形图像对象的数据，每个图形信息段包括一个对象识别符以及一个对象剪接标志，
其中，所述对象识别符识别所述图形图像对象，而所述对象剪接标志表示所述图形信息段是否包括用于所识别的图形图像对象的剪接信息。
2.如权利要求1所述方法，其特征在于，当所述对象剪接标志表示所述图形信息段包括剪接信息时，所述对象剪接信息包括对于剪接区域的位置信息。
3.如权利要求2所述方法，其特征在于，当所述对象剪接标志表示所述图形信息段包括剪接信息时，所述对象剪接信息包括对于所述剪接区域的尺寸信息。
4.如权利要求1所述方法，其特征在于，所述图形信息段包括用于定位所识别的图形图像对象的位置信息。
5.如权利要求1所述方法，其特征在于，包括用于再现由所述图形信息段中的对象识别符识别的图形图像对象的数据的每个对象数据段包括对象识别符。
6.如权利要求5所述方法，其特征在于，每个对象数据段包括表示对象数据段中的数据版本的版本号。
7.如权利要求5所述方法，其特征在于，每个对象数据段包括最新序列识别符，用于表示所述对象数据段是否为需要再现由所述对象数据段中的对象识别符所识别的图形图像对象的最新对象数据段。
8.如权利要求1所述方法，其特征在于，
所述图形信息区包括至少一个颜色信息段，每个颜色信息段提供颜色信息；且
所述图形信息段包括识别颜色信息族的颜色信息族识别符。
9.如权利要求8所述方法，其特征在于，包括由所述图形信息段中的颜色信息族识别符所识别的颜色信息族的颜色信息的每个颜色信息段包括颜色信息族识别符。
10.如权利要求9所述方法，其特征在于，每个颜色信息段包括表示该颜色信息段中的颜色信息版本的版本号。
11.如权利要求9所述方法，其特征在于，每个颜色信息段包括表示该颜色信息段中的颜色信息族识别符所识别的颜色信息族中的颜色信息的表项的表项号。
12.如权利要求11所述方法，其特征在于，所述颜色信息包括亮度和色度信息。
13.如权利要求11所述方法，其特征在于，所述颜色信息段包括透明度信息。
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