Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
CA 02405661 2002-09-30
INFORMATION STORAGE MEDIUM CONTAINING INFORMATION FOR PROVIDING
MULTI-LANGUAGE MARKUP DOCUMENT, APPARATUS
AND METHOD FOR REPRODUCING THEREOF
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an interactive information storage medium, a
reproducing apparatus, and a reproducing method, and more particularly, to an
interactive information storage medium containing multi-language markup
document
io support information which is provided together with a reproduced data
stream displayed
in a display window defined by a markup document, and an apparatus and a
method for
reproducing the information storage medium.
2. Description of the Related Art
A proposed interactive DVD medium in current market(e.g., PC Friendly DVD
disc) can be reproduced in an interactive mode based on PC(Personal Computer).
The
interactive DVD medium contains markup language documents and AV Data. . AV
data recorded on the interactive DVD medium is reproduced as an AV data stream
and
displayed in two ways: in a video mode or an interactive mode. In the video
mode, AV
data is displayed in the same way as it is displayed on regular DVD players
while in the
iriteractive mode, AV data is displayed together with an HTML document in a
display
window defined by the HTML document. If the interactive mode is selected by a
user,
a web browser installed in a PC(Personal Computer) displays the HTML document
recorded on the interactive DVD medium. The AV data to related to the HTML
document is reproduced and displayed in the display window defined by the HTML
document.
For example, in the case of a movie whose content is the AV data, a video is
played in the display window defined by the HTML document, and in the
remaining part
of the display screen, a variety of supplementary information including
scripts, stories,
and photos of actors and actresses can be displayed. The supplementary
information
may be displayed in synchronization with a title (AV data). For example, when
an actor
is on stage, an HTML document containing his brief history is invoked and
displayed
together with his video.
An existing DVD-video standard defines sub-picture data that provides a
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CA 02405661 2002-09-30
multi-language captioning together with the reproduced title. Therefore, the
user can
enjoy captions in a desired language when watching a program.
However, the proposed interactive DVD is disadvantageous in that it allows
text-based
supplementary information to be displayed in only one language, together with
the AV
data in the interactive mode. That is, the proposed interactive DVD does not
have the
capability to present the supplementary information displayed through the HTML
document in multiple languages. Therefore, a user cannot understand text-based
information displayed through the HTML document in a language that is foreign
to the
user. As a result, the interactive mode provided by the interactive DVD is not
attractive
io to the user.
SUMMARY OF THE INVENTION
To solve the above-described problems, it is an object of the present
invention
to provide an information storage medium for providing text information
displayed
through a markup document in an interactive mode in multiple languages, and an
apparatus and a method for reproducing the information storage medium.
To achieve the an aspect of above object, an information storage medium
comprises audio/video (AV) data, multiple markup documents which contain text
information on multiple languages, respectively, to be displayed in a selected
language
2o and defines display window to display AV data decoded and reproduced as an
AV data
stream, and multi-language markup document information for being referred to
in order
to display a markup document in the selected language.
It is preferable that the medium further comprises reproducing control
information
on the AV data, wherein the AV data is decoded and reproduced as the AV data
stream
with reference to the reproducing control information.
It is preferable that the AV data and the reproducing control information are
recorded on a video directory while the markup documents and the multi-
language
markup document information are recorded on an interactive directory.
To achieve an aspect of the above object, an information storage medium
comprises audio/video (AV) data, sub-picture data for providing a multi-
language
captioning together with the reproduced AV data, multiple markup documents
which
contain text information on multiple languages, respectively, to be displayed
in a
selected language with regard to the AV data or the sub-picture data, and
defines
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display window to display the AV data decoded and reproduced as an AV data
stream,
and multi-language markup document information for being referred to in order
to
display a markup document in the selected language.
It is preferable that the medium further comprises reproducing control
information
on the AV data and the sub-picture data, wherein the AV data and the sub-
picture data
are decoded and reproduced as the AV data stream and captioning with reference
to
the reproducing control information.
It is preferable that the AV data, the sub-picture data, and the reproducing
control
information are recorded on a video directory while the markup documents and
the
io multi-language markup document information are recorded on an interactive
directory.
It is preferable that the markup documents are recorded in multi-language
markup document directories named by respective language, which are sub-
directories
of the interactive directory, and markup documents containing the same meaning
text
information displayed in multiple languages have the same file name when
recorded.
is It is preferable that the multi-language markup document displaying
information
comprises displayable language information that indicates the kind of the
displayable
languages recorded on medium, and respective language directory information
for
indicating the path name to the markup documents recorded in. It is more
preferable
that language mapping information for mapping a markup document to the
selected
20 language is recorded.
To achieve another aspect of the above object, a reproducing method for
reproducing AV data recorded on an information storage medium and displaying
the AV
data in a display window defined by a markup document, the reproducing method
comprises (a) reading a markup document designed to be displayed in a selected
25 language for caption, out of multiple markup documents that have text
information to be
displayed in multiple languages, respectively, (b) reading and decoding the AV
data,
and (c) displaying the AV data, which has been reproduced, as an AV data
stream
through the read markup document.
To achieve another aspect of the above object, a reproducing method for
3o reproducing AV data and multi-language captioning specific sub-picture
data, which are
recorded on an information storage medium, and for displaying the AV data and
the
sub-picture data in a display window defined by a markup document, the
reproducing
method comprises (a) receiving language information on a selected language in
order to
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present captioning, (b) identifying the language corresponding to the received
language
information, and (c) retrieving the markup document in the directory
corresponding to
the identified language.
It is preferable that step (a) comprises (al) identifying a markup document
language code corresponding to the language code selected for caption display
by
using language mapping information, and (a2) invoking the markup document in
the
directory where the identified language code is stored.
It is preferable that in step (a2), the markup document is recorded in the
directory
that has the directory name that the identified language code indicates
To achieve another aspect of the above object, a reproducing method for
reproducing AV data recorded on an information storage medium and displaying
an AV
data stream in a display window defined by a markup document, the reproducing
method comprises (a) reading a markup document designed to be displayed in a
selected language by user preference, out of markup documents that have text
information to be displayed in multiple languages, respectively, (b) reading
and
decoding the AV data, and (c) displaying the AV data as the AV data stream in
a display
window.
To achieve another aspect of the above object, a reproducing method for
reproducing AV data recorded on an information storage medium and displaying
the AV
2o data in a display window defined by a markup document, the reproducing
method
comprises (a) receiving information on a selected language in order to display
the
markup document, (b) identifying the language corresponding to the received
language
information, and (c) retrieving the markup document in the directory
corresponding to
the identified language.
It is preferable that step (b) comprises (b1) retrieving the markup document
language code corresponding to the selected language by using language mapping
information, and (b2) retrieving and invoking the markup document in the
directory
corresponding to the retrieved language code.
To achieve yet another aspect of the above object, a reproducing apparatus for
3o reproducing AV data recorded on an information storage medium and
displaying the AV
data in a display window defined by a markup document, the reproducing device
comprises a reader for reading necessary data from the information storage
medium, an
AV decoder for decoding the AV data read by the reader, and an AV blender for
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displaying a markup document decoded by a presentation engine and an AV data
stream reproduced after the AV decoder decodes the AV data, in a display
window
defined by a markup document, and a presentation engine for interpreting a
markup
document that has the text information to be displayed in a selected language,
out of
multiple markup documents that have text information to be displayed in
multiple
languages, respectively.
To achieve yet another aspect of the above object, a reproducing device for
reproducing AV data and multi-language captioning specific sub-picture data,
which are
recorded on an information storage medium, and for displaying the AV data and
the
io captions in a display window defined by a markup document, the reproducing
device
comprises a reader for reading necessary data from the information storage
medium, an
AV decoder for decoding the AV data read by the reader, and an AV blender for
displaying a markup document decoded by a presentation engine, AV data and the
sub-picture data for caption display, a presentation engine for interpreting
the markup
is document recorded in the directory indicated by the received language
information to be
stored in the information to display multi-language markup documents, and
displaying
the AV data stream reproduced after the decoder decodes the AV data in the
display
window defined by the markup document.
It is preferable that when the markup document is displayed in connection with
20 the captions, the presentation engine refers to the multi-language markup
document
iriformation, retrieves a markup document language code corresponding to the
language code selected for the caption display, and retrieves and invokes the
markup
document recorded in the directory which the retrieved language code indicates
to. If
only the markup document is displayed, the presentation engine refers to the
25 multi-language markup document information and retrieves and invokes the
markup
document stored in the directory corresponding to the selected language by
user
preference.
BRIEF DESCRIPTION OF THE DRAWINGS
30 The above object and advantages of the present invention will become more
apparent by describing in detail preferred embodiments thereof with reference
to the
attached drawings in which:
FIG. 1 is a block diagram of a reproducing apparatus according to a preferred
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embodiment of the present invention;
FIG. 2 shows the structure of files in an embodiment of a DVD of the present
invention;
FIG. 3 is a diagram of the volume space of the embodiment of the DVD of the
present invention;
FIG. 4 is a diagram showing the structure of file DVD_ENAV.IFO explained in
FIGS. 2 and 3;
FIG. 5 is a detailed structure diagram of an embodiment of multi-language
markup document information;
FIG. 6 shows examples of markup documents retrieved and displayed with
reference to the multi-language markup document information of FIG. 5;
FIG. 7 is a flowchart explaining a reproduction method according to an
embodiment of the present invention; and
FIG. 8 is a flowchart explaining a reproduction method according to another
embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
The present invention now will be described more fully with reference to the
accompanying drawings, in which preferred embodiments of the invention are
shown.
FA markup documenti , in the specification, means not only a markup document
itself
but also a web resource that includes files inserted into or linked with the
markup
document. An HTML document means a document which is prepared in a mark-up
language such as XML or SGML and can be interpreted and displayed by the web
browser.
FIG. 1 is a block diagram of a reproducing apparatus according to a preferred
embodiment of the present invention.
With reference to FIG. 1, the reproducing apparatus decodes AV data recorded
on an embodiment of a DVD 300 of the present invention and reproduces the AV
data
as an AV data stream. Then, the reproducing apparatus displays the AV data in
a
3o display window defined by a markup document in an interactive mode and
includes a
reader 1, a buffer memory 2, a cache memory 3, an AV decoder 4, a presentation
engine 5, and an AV blender 6.
The presentation engine 5 supports the interactive mode.
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In terms of software, the presentation engine 5 includes application programs
such as a markup document viewer (ex. web browser), a program interpretation
engine,
and a plug-in that interfaces through Application Program Interface (API) with
the
operating system of the reproducing apparatus. With the API, which is a
special
pre-defined method, the presentation engine 5 can send a request to the OS and
other
application programs. The program interpretation engine includes a JavaScript
or a
Java interpretation engine. The plug-in enables various markup documents to be
displayed.
In terms of hardware, the presentation engine 5 is set to have a default value
on
io the markup document language information of reproducing apparatus, that is,
the
information about the language of the markup document that is displayed when
the
interactive mode is selected. For example, the reproducing apparatus to be
released
in English-speaking nations has markup document language information that
commands the selection of the markup document having text information in
English. It
is preferable that the markup document language information varies depending
on
where the reproducing device is marketed or which languages are dominant. If a
user
changes a default value on the markup document language information, the
markup
document is displayed in the new selected language or relevant language.
The reader 1 reads the HTML document or the AV data from the DVD 300. The
2o embodiment of the DVD 300 of the present invention contains a data packet
where
sub-picture data and AV data are multiplexed and packaged. Therefore, reading
the
AV data means reading the sub-picture together with the AV data. However, if
the
user does not select the caption display function, the sub-picture data is
discarded
without being reproduced. The buffer memory 2 buffers the AV data read by the
reader 1. The cache memory 3 caches the markup document read by the reader 1.
The AV decoder 4 decodes the AV data buffered in the buffer memory 2 and
outputs
the AV data stream. The presentation engine 5 interprets the read markup
document
and identifies the location of the display window. Then, the AV blender 6
displays
markup document outputted by the presentation engine 5 and the AV data stream
outputted by the AV decoder 4 in the display window.
FIG. 2 shows the structure of files in the embodiment of the DVD 300 of the
present invention.
The DVD 300 contains multiple markup documents having the same meaning
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content in different languages so that text information included in the markup
documents can be displayed in multiple languages. That is, the DVD 300
according to
the present invention includes multiple markup documents which contain exactly
the
same meaning text information in multiple languages, respectively.
With reference to FIG. 2, a root directory includes directories VIDEO_TS and
DVD_ENAV. The VIDEO_TS is a DVD video directory containing the AV data, and
DVD_ENAV is a DVD interactive directory for recording the data including the
markup
document that supports the interactive mode.
The VIDEO_TS directory includes VIDEO_TS.IFO, VTS_01_0.IF0,
io VTS_01_O.VOB, and VTS_01_1.VOB, .... VIDEO_TS.IFO contains the reproducing
control information on the entire video title and the language information
designated as
a default value of the video title. In VTS_01_0.lFO, the reproducing control
information
on the first video title set is recorded. VTS 01 O.VOB and VTS 01 1.V0B are
Video
Object Set (VOBS) that make up the video title set. Each VOB includes video
data,
ts audio data, and sub-picture data. The sub-picture data is designed to
display the
captions of the movie. More detailed configuration information is included in
the
DVD-Video Standard DVD-Video for Read Only Memory Disc 1Ø
The DVD_ENAV directory includes the file DVD_ENAV.IFO which contains the
reproducing control information on the entire title information in interactive
mode. To be
20 more specific, DVD_ENAV.IFO includes the definition and configuration of
the relevant
directory, the number of titles included, basic information, the language used
for the title,
information on captions and fonts, markup document display information such as
resolution and color, and copyright information. DVD_ENAV.IFO further includes
multi-language markup document information according to the present
embodiment.
25 The multi-language markup document information will be described in detail
later. In
addition, multi-language markup document directories, including KOR, JPN, and
ENG,
are prepared to support languages of the markup document according to the
embodiment. KOR, JPN, and ENG indicate a Korean Language directory, a Japanese
Language directory, and an English Language directory, respectively. Each
30 multi-language markup document directory includes the file A.HTM which has
the same
meaning text information in the associated language, and files W.PNG, X.PNG,
and
Y.PNG which are displayed together with A.HTM. Because W.PNG, X. PNG, and
Y.PNG are the same image, they may have the same file name. A Portable Network
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Graphics (PNG) file is a compressed graphic image file. Here, it is obvious
that an
audio file such as an au file or an aiff file can be attached to an image file
instead of the
PNG file in another language.
FIG. 3 is an outline diagram of the volume space of the embodiment of the DVD
300 of the present invention.
With reference to FIG. 3, the volume space of the DVD 300 includes a control
information section that includes the control information on volume and the
file, a
DVD-video data section that includes a relevant video title data, and a DVD-
interactive
data section that contains data that supports the interactive mode.
io The DVD-video data section contains the files VIDEO_TS.IFO, VTS_01_0.IFO,
VTS_01_O.VOB, VTS_01_1.VOB, ... that are recorded in DVD_TS, which is the DVD
video directory of FIG. 2. The DVD-interactive data section contains the files
DVD_ENAV.IFO, A.HTM (KOR), A.HTM (JPN), A.HTM (ENG), W.PNG, X.PNG, and
Y.PNG, which are recorded in DVD_ENAV, the DVD interactive directory of FIG.
2.
FIG. 4 shows the structure of the file DVD_ENAV.IFO explained in FIGS. 2 and
3.
With reference to FIG. 4, DVD_ENAV.IFO includes the multi-language markup
document information according to the present invention. The multi-language
markup
document information contains information on the kind of languages that can be
2o displayed, language mapping information, and information on the directory
by
respective language.
FIG. 5 is a detailed structure diagram of an embodiment of multi-language
markup document information according to the present invention. With reference
to
FIG. 5, the displayable language information included in the multi-language
markup
document information includes information on the number of displayable
languages, the
codes of the displayable languages and whether the languages can be changed
during
reproduction.
The codes of the displayable languages can be indicated as ISO-639 language
codes. 0x0412, 0x0411 and 0x0409 are hexadecimal values and indicate Korean,
Japanese, and English, respectively.
In a language mapping table, which contains the language mapping information,
caption language codes are mapped to language codes for mapping to relevant
HTML
documents which are referred to for extracting the markup documents that
contain text
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information to be displayed in the languages corresponding to the caption
language
codes. To be more specific, the captions are displayed in Korean, Japanese,
English,
or Chinese. The markup document displayed with the captions is displayed in
Korean,
Japanese, or English. Therefore, if the user selects Korean, Japanese, or
English for
the captions, the markup document is displayed in the corresponding language,
Korean,
Japanese, or English. However, if the user selects Chinese for caption
display, the
markup document is displayed in English. The number of displayable languages
can
vary. Even when the markup document is displayed without interworking with the
captioning, the language mapping table can be referred to for extracting the
markup
io document. For example, if the language of the reproducing apparatus is set
as
Chinese (ZH), the presentation engine 5 displays the markup document prepared
in
English (EN-US) by referring to the language mapping table. The information on
changeability of markup document language indicates whether the user can
change the
language during reproduction of the AV data. 0 indicates that the language
cannot be
changed while 1 indicates that the language can be changed.
The language directory information includes the path names of the
multi-language markup document directories containing markup documents
corresponding to the displayable language codes, respectively and the file
name of the
HTML document designated as a start document file.
FIG. 6 shows examples of the markup documents retrieved and displayed with
reference to the multi-language markup document information of FIG. 5.
FIGS. 6A through 6C show markup documents displayed when Korean captions,
Japanese captions, and English or Chinese captions are selected, respectively.
In case
of Chinese caption, the captions language is different from the text
information is
displayed in the markup document.. That is, since a multi-language markup
document
is supported in the interactive mode, the present invention can display the
markup
document containing the text information prepared in the language mapped to
the
captioning selected by the user or the language selected by the user. If the
user
changes the Korean captions into Japanese captions while a video title is
reproduced in
the interactive mode, the markup document displayed together is changed from
FIG. 6A
to FIG. 6B. That is, the present invention reads and displays A.HTM, the
markup
document, stored in the multi-language markup document directory JPN by
referring to
the language mapping table and the language directory information shown in
FIG. 5.
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If the markup document is displayed without interworking with the captioning,
the
markup document containing the text information prepared in the language
selected by
the user is displayed even though the caption is not displayed.
The reproducing method according to the preferred invention is described as
follows.
FIG. 7 is a flowchart explaining a reproduction method according to the
present
invention.
With reference to FIG. 7, if the interactive-DVD 300 according to the present
invention is inserted into the reproducing apparatus, the presentation engine
5 of the
io reproducing apparatus retrieves the language information recorded on
VIDEO_TS.IFO
and identifies if the language designated as a default value of the
reproducing
apparatus exists in step 701. If the language information recorded on
VIDEO_TS.IFO
of the interactive-DVD 300 does not have the language designated as the
default value
of the reproducing apparatus, the presentation engine 5 sets the language
designated
is as a default value of VIDEO TS.IFO or DVD ENAV.IFO of the interactive-DVD
300 as
the default value for the reproduction of the markup document in step 702.
If the language information recorded in ViDEO_TS.IFO of the interactive-DVD
300 has the language designated as the default value of the reproducing
apparatus, the
presentation engine 5 sets the language as the default value for reproduction
of the
20 markup document in step701.
The reader 1 reads the markup document prepared in the designated language
in step 703. For example, if the Korean language is set as the default value
for
reproduction of the markup document, the reader 1 reads A.HTM stored in the
Korean
directory KOR of the multi-language markup document directory. The
presentation
25 engine 5 displays the read markup document iri step 704.
If the user changes the language of the caption in step 705, the presentation
engine 5 identifies whether the languages of the displayed markup documents
can be
changed during reproduction of the AV data by referring to the multi-language
markup
document information described above in step 706. If possible, the
presentation
3o engine retrieves the relevant markup document with reference to the multi-
language
markup document information and the reader 1 reads the retrieved markup
document in
step 707. The presentation engine 5 displays the read markup document in step
708.
If the user completes the reproduction of the reproducing apparatus, the
process ends
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in step 709. If the user changes the language of the caption again during the
reproduction, steps 706 through 708 are repeated.
FIG. 8 is a flow chart explaining the reproduction method according to another
embodiment of the present invention.
With reference to FIG. 8, if the interactive-DVD 300 according to the present
invention is inserted into the reproducing apparatus, the presentation engine
5 of the
reproducing apparatus retrieves the language information recorded on VIDEO
TS.IFO
and identifies if the language designated as a default value of the
reproducing
apparatus exists in step 801. If the language information recorded on the
io VIDEO_TS.IFO of the interactive-DVD 300 does not have the language
designated as
the default value of the reproducing device, the presentation engine 5 sets
the language
designated as a default value of VIDEO_TS.IFO or DVD_ENAV.IFO of the
interactive-DVD 300 as the default value for the reproduction of the markup
document in
step 802.
If the language information recorded on the VIDEO_TS.IFO of the
interactive-DVD 300 has the language designated as the default value of the
reproducing device, the presentation engine sets the language as the default
value for
reproduction of the markup document in step801.
The reader 1 reads the markup document prepared in the designated language
in step 803. For example, if the Korean language is set as the default value
for
reproduction of the markup document, the reader 1 reads A.HTM recorded in the
Korean directory KOR of the multi-language markup document directory. The
presentation engine 5 displays the read markup document in step 804.
If the user requests the language of the markup document to be changed in step
805, the presentation engine 5 interprets the multi-language markup document
information and identifies if the languages of the displayed markup documents
can be
changed during reproduction of the AV data in step 806. If the language change
is
possible, the presentation engine displays a menu where the kind of
displayable
languages that can be selected is indicated by referring to the displayable
language
information of the multi-language markup document information in step 807. If
the user
selects the language in step 808, the presentation engine 5 retrieves the
relevant
markup document by referring to the tanguage directory information (and the
language
mapping table) and the reader I reads the retrieved markup document in step
809.
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The presentation engine 5 displays the read markup document in step 810. If
the user
completes the reproduction of the reproducing apparatus, the process ends in
step 811.
If the user requests the language of the markup document to be changed again
during
the reproduction, steps 806 through 810 are repeated.
As described above, the present invention relates to an information storage
medium that displays the text information included in the markup document in
the
interactive mode in multiple languages and to an apparatus and a method for
reproducing the information storage medium.
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