Note: Descriptions are shown in the official language in which they were submitted.
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If~F~RI~I~TI~~! ST~R~GE ~9fE~IUI~i H~l9IHCC~ ~AT~~TI~UCTI~I~E F~1~ I~EI1~C~
hElal~~~UCE~ ~~~PTI~EL~'~~~~1~~I~~ T~ PL~~'EI~ ST~RTU1~ IY~F~I~i~i~Tl~I~,
i~iETH~~ ~i~~ ~f~C~~I~TI.LS To-IERfE~F
Technical Field
TIIe present invention relates to an apparatus and method of reproducing Audio-
Visual
(AV) data in an interactive mode, and an information storage medium therefor.
l3ackqround Art
PC-based DVDs (hereinafter, referred to as "interactive DVD") capable of
reproducing
Audio-Visual (AV) data in an interactive mode have been on the market. The
interactive DVD
stores interactive data supporting an interactive function as well as AV data
according to a
conventional DVD-Video standard. The AV data recorded on the interactive DVD
can be
displayed in two modes: one is a video mode in which AV data is displayed in
the same form as
in a general DVD-Video and the other is an interactive mode in which an AV
picture that is
reproduced from AV data is embedded and displayed in an interactive picture
that is reproduced
from interactive data. For example, in a case where the AV data is a movie
title, a
corresponding movie is shown on the AV picture and various additional
information including the
scenario of the movie, the story of the movie, the pictures of casts, etc., is
displayed on the
interactive picture. The additional information can be displayed in
synchronization with the
movie title (AV data). For example, when a specific actor appears, interactive
data containing
his/her personal history information can be reproduced and displayed.
The interactive data includes a markup document written in a markup language;
a
script code as an internal file of a markup document or as a separate file to
be linked with the
markup document; and an audio file, an animation file, an image file, etc., to
be linked with the
markup document and be reproduced along with the markup document.
Considering that the interactive mode is aimed to provide a user with various
additional contents using markup documents, the effect is very low if a
marl<up document
containing additional contents made with a language that a user is unable to
read is displayed in
an interactive mode.
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Disclosure of the Invention
The present invention provides an information storage medium, having a data
structure capable of selecting additional contents made with a language
selected by a user or
with a predetermined language and reproducing AV data in an interactive mode
when an
information storage medium storing the AV data is reproduced, and a
reproducing apparatus
and reproducing method thereof.
According to an aspect of the present invention, there is provided an
information
storage medium including AV data, interactive data, which is displayed along
with an AV picture
obtained from the AV data, and provides contents related to the AV picture,
when the AV data is
reproduced in an interactive mode, and language information, which indicates a
language of
contents contained in the interactive data.
Additional aspects and/or advantages of the invention will be set forth in
part in the
description which follows and, in part, will be obvious from the description,
or may be learned by
practice of the invention.
According to another aspect of the present invention, there is provided an
information
storage medium including AV data, a plurality of enhanced AV (ENAV)
applications, each of
which includes substantially the same contents and is made with a plurality of
different
languages in order to reproduce the AV data in an interactive mode, and
language information,
which is used to select one among the plurality of ENAV applications.
According to still another aspect of the present invention, there is provided
a
reproducing apparatus including an AV reproducing engine which decodes AV
data, and an
ENAV engine, which includes player language information selecting one among a
plurality of
ENAV applications, each of which includes substantially the same contents and
is made with a
plurality of different languages, and interprets and executes a selected ENAV
application with
reference to the player language information in order to reproduce the AV data
in an interactive
mode.
According to still yet another aspect of the present invention, there is
provided a
reproducing method of reproducing AV data in an interactive mode, the method
including
reading language information indicating a language used with contents
contained in interactive
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data; selecting and reading interactive data made with the same language as
player language
information set in a reproducing apparatus with reference to the read language
information; and
interpreting and executing the read interactive data.
Brief ~e~cripfii~n ~f file ~ravvin~s
These and/or other aspects and advantages of the invention will become
apparent
and more readily appreciated from the following description of the
embodiments, taken in
conjunction with the accompanying drawings of which:
FIG. 1 shows a reproduction system according to an embodiment of the present
invention;
FIG. 2 is a view explaining operations of an ENAV disk according to the
present
invention;
FIG. 3 shows a volume space of the ENAV disk shown in FIG. 2 according to an
embodiment of the present invention;
FIG. 4 is a diagram illustrating a directory structure of the ENAV disk shown
in FIG. 2
according to an embodiment of the present invention;
FIG. 5 shows a relationship between AV data and ENAV files recorded on the
ENAV
disk shown in FIG. 2 according to an embodiment of the present invention;
FIG. 6 is a block diagram of a reproduction apparatus according to an
embodiment of
the present invention;
FIG. 7 shows a startup file STARTUP.MLS according to an embodiment of the
present
a
invention;
FIG. 5 shows a startup file STARTUP.MLS according to another embodiment of the
present invention;
FIG. 9 shows a system parameter table in which profile information is listed,
according
to an embodiment of the present invention;
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FIG. 10 is a view explaining a data structure of profile information recorded
as a
system parameter of FIG. 9; and
FIG. 11 is a flowchart explaining a reproduction method according to an
embodiment
of the present invention.
best mode f~r carryinct oat the Inventi~n
Reference will now be made in detail to the embodiments of the present
invention,
examples of which are illustrated in the accompanying drawings, wherein like
reference
numerals refer to the like elements throughout. The embodiments are described
below to
explain the present invention by referring to the figures.
Hereinafter, embodiments of the present invention will be described in detail
with
reference to the appended drawings. In this specification, "interactive data"
refers to data
recorded to support an interactive mode and includes a markup document
recorded with a
markup language and/or a script code, a script code file linked with a markup
document or
provided separately, a program file, an audio file, an animation file, and an
image file as
resource files, etc., to be linked with a markup document and displayed with
the markup
document. That is, the interactive data acts as additional contents being
provided with AV data,
as well as acts as an application program required to reproduce the AV data in
an interactive
mode.
FIG. 1 shows a reproduction system according to an embodiment of the present
invention. Referring to FIG. 1, the reproduction system comprises an enhanced
AV (ENAV) disk
100 as an information storage medium that supports an interactive mode, a
reproducing
apparatus 200, a display apparatus 300, for example a TV, and a remote
controller 400 as a
user input device. The remote controller 400 receives a control command input
from a user and
transfers it to the reproducing apparatus 200. The reproducing apparatus 200
reproduces AV
data recorded on the ENAV disk 100. If the ENAV disk 100 is loaded in a DVD
drive included in
the reproducing apparatus 200 and a user selects an interactive mode, the
reproducing
apparatus 200 reproduces the ENAV disk 100 in the interactive mode and
transfers reproduced
data to the display apparatus 300. The display apparatus 300 displays both an
AV picture
corresponding to the reproduced AV data and an interactive picture obtained
from an interactive
application. "Interactive mode" refers to a method of displaying an AV picture
on a display
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window defined in a markup document as an interactive application, that is, a
method of
displaying both an AV picture and an interactive picture in a manner that the
AV picture is
embedded in the interactive picture. Here, the AV picture represents a picture
in which ~V~-
Video data recorded on the EIlIAV disk 100 is reproduced by the reproducing
apparatus 200 and
is displayed on the display apparatus 300. The interactive picture represents
a picture in which
an interactive application recorded on the Ei~AV disk 100 is interpreted and
executed by the
reproducing apparatus 200 and is displayed on the display apparatus 300.
Meanwhile, "video
mode" refers to a method of reproducing AV data according to a method defined
in a
conventional ~V~-Video, that is, a method of displaying only an AV picture
obtained by
reproducing the corresponding AV data. In this embodiment, the reproducing
apparatus 200
supports both the interactive mode and the video mode. Furthermore, the
reproducing
apparatus 200 can receive AV data and/or interactive data through a network.
The reproducing apparatus 200 has a system parameter table containing system
parameters (SPRMs). The system parameter table includes player language
information. The
reproducing apparatus 200 selects interactive data to be used in the
interactive mode with
reference to the player language information. The SPRMs may be stored in a
memory in the
reproducing apparatus 200.
The disk 100 also stores language information indicating a language used in
the
contents of the stored interactive data. The language information recorded on
the disk is
substantially the same as the player language information stored in SPRMs,
however, the disk
language information is different from the player language information in that
the disk language
information is recorded on the disk 100 and indicates corresponding
interactive data.
When the interactive mode is selected, the reproducing apparatus 200 reads
language information recorded on the ENAV disk 100, compares the read language
information
with its own player language information stored as a system parameter, and
performs
reproduction using interactive data selected according to the compared result.
FIG. 2 is a view explaining the operations of the E~IAV disk 100. Referring to
FIG. 2,
interactive data corresponding to language information is recorded on the
Ef~AV disk 100. That
is, interactive data #1 corresponding to language information #1 exists,
interactive data #2
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corresponding to language information #2 exists, ..., interactive data #n
corresponding to
language information #n exists, wherein n is an integer.
The language information (#1, #2, ..., #n) may be recorded separately from the
interactive data (#1, #2, ..., #n) and can be linked with the interactive data
(#1, #2, ..., #n), or
can be recorded as one part of the interactive data (#1, #2, ..., #n).
If player language information set in the reproducing apparatus 200 is the
same as the
language information #2, the reproducing apparatus 200 gets the interactive
data #2
corresponding to the language information #2 and reproduces corresponding AV
data in an
interactive mode. For example, if fihe player language information is
"English", the reproducing
apparatus 200 uses interactive data corresponding to language information
"English" among
interactive data recorded on the ENAV disk 100.
FIG. 3 shows a volume space of the ENAV disk 100 according to an embodiment of
the present invention. Referring to FIG. 3, the volume space of the ENAV disk
100 includes a
Volume and File structure area recording information related to volume and
file, a DVD-Video
Data area recording AV data or video titles in a DVD-Video format, and an ENAV
file area
recording ENAV files supporting an interactive mode.
The DVD-Video data area includes VIDEO TS.IFO containing reproduction control
information for all video titles recorded on the ENAV disk 100, VTS 01_O.IFO
containing
reproduction control information of a first video title, and VTS 01 O.VOB, VTS
01_1.VOB, ...,
as AV data constructing video titles. VTS 01 O.VOB, VTS_01_1.VOB, ... are
video titles, that is,
video objects. Each VOB contains VOBU in which a navigation pack, a video
pack, and an
audio pack are packaged. The detailed construction of these data areas are
disclosed in "DVD-
Video for Read Only Memory Disc 1.0" of a conventional DVD-Video standard.
The ENAV file area stores an ENAV application consisting of a plurality of
ENAV files.
That is, the ENAV file area stores as the ENAV files, a startup file to be
first read when an
interactive mode is selected, a markup document corresponding to a selected
video title, etc.
As such, the interactive data is recorded as a plurality of ENAV files. The
ENAV files
include the following: a markup document; a script code file; a program file;
a style sheet
designating a style of a markup document; and an audio file, animation file,
an image file, etc.
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as resource files to be linked with the markup document and be displayed along
with the
markup document, as described above.
FIG. 4. is a diagram illustrating a directory structure of the ENAV disk 100
according to
an embodiment of the present invention. Referring to FIG. 4., a root directory
has a DVD video
directory VIDEO TS and an ENAV directory DV~ ENAV storing ENAV data supporting
an
interactive mode.
The DVD video directory Vl~EO TS stores data described above with reference to
FIG. 3, that is, VIDEO TS.IFO, VTS 01 O.IFO, VTS 01 O.VOB, VTS 01 1.VOB, etc.
The
ENAV directory DVD_ENAV stores data described above with reference to FIG. 3,
that is, a
startup file STARTUP.MLS and other ENAV files.
FIG. 5 shows a relationship between the AV data and the ENAV files recorded on
the
ENAV disk 100 according to an embodiment of the present invention. Referring
to FIG. 5, the
ENAV disk 100 stores ENAV applications corresponding respectively to AV data,
ensuring
seamless reproduction. One ENAV application is a set of a plurality of ENAV
files. To ensure
seamless reproduction of AV data, an ENAV application corresponding to the AV
data is buffered
in advance before the AV data is reproduced in an interactive mode.
Each ENAV application includes one loading information file. The loading
information
file stores location information of ENAV files that is needed to reproduce the
corresponding AV
data in the interactive mode. The location information of ENAV files includes
location
information for ENAV files to be buffered in advance before the corresponding
ENAV application
is launched, that is, location information of ENAV files to be preloaded.
Because preloading is performed for each ENAV application, seamless
reproduction
is ensured for AV data corresponding to each ENAV application. Accordingly, in
a view of a user
interface, a contents provider makes ENAV applications in a manner that one
ENAV application
corresponds to 1 piece of video title or 1 chapter of video title in order to
ensure seamless
reproduction.
Meanwhile, as a contrast to preloading, post-loading is to buffer a desired
ENAV file
after a corresponding ENAV application is launched. One ENAV application does
not always
include an ENAV file to be post-loaded. If post-loading is needed, post-load
information
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required with post-loading, i.e., location information of ENAV files to be
post-loaded, is recorded
on the loading information file.
FIG. 6 is a block diagram of the reproduction apparatus 200 according to an
embodiment of the present invention. Referring to FIG. 6, the reproduction
apparatus 200
includes a reader 1, an AV reproducing engine 2, and an ENAV engine 3.
The reader 1 reads AV data, i.e., DVD-Video data and ENAV files from the DVD
100
according to a control signal sent from fibs ENAV engine 3. The AV reproducing
engine 2
reproduces the AV dafia read by the reader 1. Because the AV data is DVD-Video
data, the AV
reproducing engine 2 is implemented by a DVD-Video reproduction engine
reproducing DVD-
Video data. The AV reproducing engine 2 is communicated with the ENAV engine 3
through an
Application Program Interface (API). That is, the AV reproducing engine 2
informs the ENAV
engine 3 of a property indicating a status of the AV reproducing engine 2 in
response to a
request sent from the ENAV engine 3, and sends a trigger to the ENAV engine 3.
For example,
in a case where a corresponding quiz is displayed on an interactive screen
simultaneously with
a battle scene while a movie, such as "Starwars," is shown in an interactive
mode, the trigger
informs the ENAV engine 3 of related information when the battle scene is
displayed.
The ENAV engine 3 reproduces the ENAV files. Particularly, in the present
embodiment, the ENAV engine 3 verifies, interprets, and executes a markup
document as an
ENAV file in order that the DVD-Video data recorded on the DVD 100 can be
reproduced in the
interactive mode. Also, the ENAV engine 3 blends and outputs a reproduced DVD-
Video stream
and an interpreted markup document. Accordingly, a picture in which an AV
picture is
embedded in an interactive picture is displayed on the display apparatus 300.
Meanwhile, the
ENAV engine 3 can include various plug-ins. Plug-ins are used to open various
formats of files
included in the markup document or linked with the markup document. For
example, to
reproduce AV data for a window media player, the ENAV engine 3 can call up the
window media
player. Also, the ENAV engine 3 accesses a network and can get desired
information such as
the ENAV file.
Particularly, in the present embodiment, the ENAV engine 3 parses language
information recorded on a startup file, compares the language information with
player language
information recorded on a system parameter table, and selects a corresponding
loading
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information file according to the compared result. The loading information
file includes a list of
ENAV files that should be bufFered in advance or during reproducing for
seamless reproduction.
The ENAV engine 3 buffers ENAV files according to a selected loading
information file in a
buffer (not shown) included in the ENAV engine 3 and then interprets and
executes from an
initial file of the ENAV files.
FIG. 7 shows a startup file STARTIJP.MLS according to an embodiment of the
present
invention. Referring to FIG. P, the startup file STARTIJP.PVILS being a markup
document written
in a markup language includes two elements: one is a "walledgarden" element
and the other is a
"loadinginfo" element.
The "walledgarden" element includes links to a walled garden list file that
lists a
network area allowing access through an inserted ENAV disk 100, or files
allowing access
according to a parental level. The "walledgarden" element may or may not be
recorded on the
start up file.
The "loadinginfo" element includes links to a loading information file
indicating location
information for ENAV files belonging to an ENAV application, in order to load
the ENAV
application which is a set of ENAV files required when reproducing data in the
interactive mode.
By using a "condition" element included in the "loadinginfo" element,
condition information
selecting one among a plurality of ENAV applications is recorded. In more
detail, the condition
information selecting the ENAV application is recorded using a "name" property
and a "value"
property included in the "condition" element.
The startup file shown in FIG. 7 includes two "loadinginfo" elements. A
reference
numberA indicates a part on which a first "loadinginfo" element is recorded
and a reference
number B indicates a part on which a second "loadinginfo" element is recorded.
The "name"
and "value " property values of the "condition" element included in the first
"loadinginfo" element
are recorded as "lang" and "en" respectively, to indicate that the contents of
an ENAV file
included in an ENAV application referred to by the first "loadinginfo" element
is made with
English. The "name" and "value" property values of the "condition" element
included in the
second "loadinginfo" element are recorded as "lung" and "kr", respectively, to
indicate that the
contents of an ENAV file constructing a referred ENAV application is made with
Korean. The
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application language is expressed by lower case English letters consisting of
two characters as
defined in ISO-639.
FIG. 3 shows a startup file STARTUP.MLS according to another embodiment of the
present invention. Referring to FIG.3, the startup file STARUP.fVILS includes
two elements: one
is a "walledgarden" element and the other is an "application" element. The
"walledgarden"
element has the same meaning as in FIG. 7.
The "application" element includes links to a loading information file
indicating location
information for ENAV files belonging to an ENAV application, in order to load
the ENAV
application which is a set of ENAV files required when reproducing data in the
interactive mode.
A "condition" element included in fihe "application" element is used to record
a condition
selecting one among a plurality of ENAV applications to which the startup file
is linked. A
"param" element included in the "condition" element is used to represent a
property value that
provides a selection criterion selecting a corresponding ENAV application. In
more detail, the
condition information selecting the ENAV application is recorded using a param
"name" property
and a "value" property included in the "condition" element.
A reference number C represents an ENAV application referred by a first
"application"
element and a reference number D represents an ENAV application referred by a
second
"application" element. The ENAV application referred by the first
"application" element indicates
that contents included in the corresponding ENAV file are made with English.
The ENAV
application referred by the second "application" element indicates that
contents included in the
corresponding ENAV file is the same as in the first application, except it is
made with Korean.
The application language is expressed by lower case English letters consisting
of two
characters as defined in an ISO-639 standard.
A conventional interactive mode has not considered that a readable language is
different according to users. However, the present invention provides a
plurality of interactive
data, the contents of which are each made with a different language,
considering that a
readable language is different according to users, and allows a user to select
one among the
plurality of interactive data. Furthermore, because language information
selecting an ENAV
application is recorded on a startup file, the reproducing apparatus 200 can
select an ENAV
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application corresponding to predetermined player language information when
being first
operated.
F1~. 9 s9~ows a system parameter table storing language information, according
to an
embodiment of the present invention. Referring to FIG. 9, the system parameter
table is stored
in the reproducing apparatus 200. System parameters 0 through 20 are
implemented using a
system parameter table according to System Parameters (SPRMs) defined in a DVD-
Video
standard (DVD specifications f~r Read-~nly Disc Part 3 Video Specifications),
considering
compatibility. In more detail, one among the system parameters included in the
system
parameter table can be used as language information, or a new format of system
parameter
table can be implemented by adding the player language information to the
system parameter
table. A value having a fixed length of 2 bytes is stored in SPRM and each
parameter has a 16-
bit integer value. Detailed descriptions for SPRMs 0 through 20 are disclosed
in the DVD-Video
standard and therefore the descriptions for parameters without direct-relation
to the present
invention are omitted.
Case where SPRM 0 is used as player language information according to the
present
invention:
SPRM 0 stores information of a language that a user uses to create a DVD-Video
menu. The reproducing apparatus 200 compares a value set in SPRM 0 with
language
information recorded on an ENAV disk 100, and can select an ENAV application
created with
the same language as the menu, as an ENAV application to be first executed.
Gase where SPRM 16 is used as player language information according to the
present invention:
The value of SPRM 16 can be changed only when the reproducing apparatus is
initialized and cannot be changed while the reproducing apparatus is being
reproduced or
operated. SPRM 16 stores language information of an audio stream to be
reproduced
simultaneously when a DVD-Video is reproduced, in a format defined in the ISO-
639 standard.
Therefore, the reproducing apparatus 200 can select an ENAV application to be
first executed,
with reference to the value set in SPRM 16.
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Case where SPRM 18 is used as player language information according to the
present invention:
The value of SPRM 18 also can be changed only when the reproducing apparatus
is
initialized and cannot be changed while the reproducing apparatus is being
reproduced or
operated. SPRM 18 stores language information displaying a caption of a DVD-
Video, in a
format defined in the ISO-639. In most cases, users see a caption of a movie
made with their
local language while hearing an audio of an original language used where the
movie is made.
Accordingly, the reproducing apparatus 200 selects an ENAV application, the
contents of which
are made with the same language as the caption, with reference to the language
information
displaying the caption in the DVD-Video. That is, the reproducing apparatus
200 selects the
ENAV application with reference to the values stored in SPRM 18.
Case where player language information according to the present invention is
recorded on SPRM 21:
According to the DVD-Video standard, SPRMs 21 through 23 are reserved areas.
Accordingly, the present embodiment records the player language information
(Initial Language
Code) in a format defined in the ISO-639 standard on one among the empty
SPRMs, for
example, on SPRM 21. The value of SPRM 21 can also be changed only when the
reproducing
apparatus is initialized and cannot be changed while the reproducing apparatus
is being
reproduced or operated.
FIG. 10 is a view explaining the data structure of the player language
information
recorded as the system parameter of FIG. 9. Referring to FIG. 10, the player
language
information is recorded using 2 bytes allocated to SPRM 21. The remaining bits
not used in
recording the language information thereon are reserved and can be used to
store other
information. SPRM 21 can be recorded in a format defined in the ISO-639
standard or
according to other standards.
FIG. 11 is a flowchart explaining a reproduction method according to an
embodiment
of the present invention. Referring to FIG. 11, if an ENAV dish 100 is loaded
in a reproducing
apparatus 200, the reproducing apparatus 200 checlzs a startup file stored in
a directory
DVD_ENAV and defiermines whether the loaded dials is an ENAV DVD 100
(operation 1101 ). If
the reproducing apparatus 200 cannot find a stavup file, the reproducing
apparatus 200
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determines whether the loaded disk is a conventional DVD-Video disk (operation
1102), If the
loaded disk is a DVD-Video disk, the reproducing apparatus 200 reproduces the
disk in a video
mode (operati~n 1103). The reproducing apparatus 200 does not reproduce the
dials if the dish
is another type of disk.
If the reproducing apparatus 200 finds a startup file and determines that the
loaded
disk is the ENAV disk 100 (operation 1101 ) and if a user selects a video
mode, the reproducing
apparatus 200 reproduces the loaded disk in the video mode (operation 1103).
If the user
selects an interactive mode (operation 1104.), the reproducing apparatus 200
reads the startup
file (operation 1105), reads language information recorded on the startup
file, and reads a
loading information file corresponding to player language information recorded
on a system
parameter table (operation 1106). Then, the reproducing apparatus 200 buffers
ENAV files
listed in the read loading information file (operation 1107), interprets and
executes from a first
ENAV file, and reproduces selected AV data in the interactive mode (operation
1108).
As described above, the present invention provides an information storage
medium,
having a data structure capable of selecting additional contents made with a
language selected
by a user or with a predetermined language and reproducing AV data in an
interactive mode
when an information storage medium storing AV data is reproduced, and a
reproducing
apparatus and reproducing method thereof.
Therefore, the reproducing apparatus can select an ENAV application to be
first
executed in the interactive mode and reproduce the selected ENAV application
with a language
readable by a user.
Although a few embodiments of the present invention have been shown and
described,
it would be appreciated by those skilled in the art that changes may be made
in these
embodiments without departing from the principles and spirit of the invention,
the scope of
which is defined in the claims and their equivalents.
Industrial Applicability
fVleanwhile, the above-described reproducing method may be embodied as a
program
on a computer readable medium including, but not limited to storage media,
such as magnetic
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storage media (e.g., ROM's, floppy disks, hard disks, etc.), optically
readable media (e.g., G~-
ROMs, ~V~s, etc.) and carrier waves (e.g., transmissions over the Internet).
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