U.S. patent application number 11/785395 was filed with the patent office on 2007-08-23 for method for managing recording and reproduction of multi-dubbed audio stream.
Invention is credited to Sung Ryun Cho, Byung Jin Kim, Mi Hyun Kim, Sung Wan Park, Kang Soo Seo.
Application Number | 20070196079 11/785395 |
Document ID | / |
Family ID | 29244786 |
Filed Date | 2007-08-23 |
United States Patent
Application |
20070196079 |
Kind Code |
A1 |
Kim; Mi Hyun ; et
al. |
August 23, 2007 |
Method for managing recording and reproduction of multi-dubbed
audio stream
Abstract
A method and recording medium for managing an A/V stream are
discussed. According to an embodiment, the method includes a method
for managing a main Audio/Video (A/V) stream on a recording medium,
the method comprising: providing a first playlist on the recording
medium that links the main A/V stream with a first additional data
such that the main A/V stream is reproduced with the first
additional data; and providing a second playlist on the recording
medium that links the main A/V stream with a second additional data
such that the main A/V stream is reproduced with the second
additional data.
Inventors: |
Kim; Mi Hyun; (Seoul,
KR) ; Cho; Sung Ryun; (Seoul, KR) ; Kim; Byung
Jin; (US) ; Seo; Kang Soo; (US) ; Park;
Sung Wan; (US) |
Correspondence
Address: |
BIRCH STEWART KOLASCH & BIRCH
PO BOX 747
FALLS CHURCH
VA
22040-0747
US
|
Family ID: |
29244786 |
Appl. No.: |
11/785395 |
Filed: |
April 17, 2007 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
10421836 |
Apr 24, 2003 |
7221855 |
|
|
11785395 |
Apr 17, 2007 |
|
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Current U.S.
Class: |
386/248 ;
386/E5.016; G9B/27.012; G9B/27.013; G9B/27.019; G9B/27.05 |
Current CPC
Class: |
H04N 5/85 20130101; G11B
27/036 20130101; G11B 27/329 20130101; G11B 27/322 20130101; G11B
2220/216 20130101; G11B 27/105 20130101; G11B 27/034 20130101; G11B
2220/2541 20130101; H04N 5/9265 20130101; G11B 2220/2562
20130101 |
Class at
Publication: |
386/106 ;
386/096 |
International
Class: |
H04N 5/91 20060101
H04N005/91 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 25, 2002 |
KR |
10-2002-0022810 |
Claims
1. A method for managing a main Audio/Video (A/V) stream on a
recording medium, the method comprising: providing a first playlist
on the recording medium that links the main A/V stream with a first
additional data such that the main A/V stream is reproduced with
the first additional data; and providing a second playlist on the
recording medium that links the main A/V stream with a second
additional data such that the main A/V stream is reproduced with
the second additional data.
2. The method of claim 1, further comprising: selectively
reproducing the first and second playlists from the recording
medium.
3. The method of claim 1, wherein the first playlist includes a
main path corresponding to the main A/V stream and a sub path
corresponding to the first additional data, and the second playlist
includes a main path corresponding to the main A/V stream and a sub
path corresponding to the second additional data.
4. The method of claim 1, further comprising: providing management
information on the recording medium for managing both of the first
and second playlists.
5. The method of claim 4, wherein the management information for
both of the first and second playlists is included in a same file
on the recording medium.
6. The method of claim 1, wherein the first and second additional
data comprise first and second audio streams, respectively.
7. The method of claim 1, wherein a number of the playlists
corresponds to a number of the additional data.
8. A method for reproducing a main Audio/Video (A/V) stream from a
recording medium, the method comprising: reading playlist
management information from the recording medium, said playlist
management information including at least a first playlist that
links the main A/V stream with a first additional data such that
the main A/V stream is reproduced with the first additional data,
and a second playlist that links the main A/V stream with a second
additional data such that the main A/V stream is reproduced with
the second additional data.
9. The method of claim 8, further comprising: selectively
reproducing the first and second playlists from the recording
medium.
10. The method of claim 8, wherein the first playlist includes a
main path corresponding to the main A/V stream and a sub path
corresponding to the first additional data, and the second playlist
includes a main path corresponding to the main A/V stream and a sub
path corresponding to the second additional data.
11. The method of claim 8, wherein the playlist management
information is included in a same file on the recording medium.
12. The method of claim 8, wherein the first and second additional
data comprise first and second audio streams, respectively.
13. The method of claim 8, wherein a number of the playlists
corresponds to a number of the additional data.
14. A recording medium to be read by a video disc recorder, the
recording medium comprising: a main Audio/Video (A/V) stream; and
playlist management information including at least a first playlist
that links the main A/V stream with a first additional data such
that the main A/V stream is reproduced with the first additional
data, and a second playlist that links the main A/V stream with a
second additional data such that the main A/V stream is reproduced
with the second additional data.
15. The recording medium of claim 14, wherein the first playlist
includes a main path corresponding to the main A/V stream and a sub
path corresponding to the first additional data, and the second
playlist includes a main path corresponding to the main A/V stream
and a sub path corresponding to the second additional data.
16. The recording medium of claim 14, wherein the playlist
management information is included in a same file on the recording
medium.
17. The recording medium of claim 14, wherein the first and second
additional data comprise first and second audio streams,
respectively.
18. The recording medium of claim 14, wherein a number of the
playlists corresponds to a number of the additional data.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application is a Continuation of co-pending application
Ser. No. 10/421,836, filed on Apr. 24, 2003, the entire contents of
which are hereby incorporated by reference and for which priority
is claimed under 35 U.S.C. .sctn. 120.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to a method for managing
recording and reproduction of a multi-dubbed audio stream
corresponding to an A/V stream recorded on a storage medium such as
a high-density rewritable optical disc.
[0004] 2. Description of the Related Art
[0005] Recently, standardization of new high-density rewritable
optical discs has rapidly progressed, for example, BD-RE (Blu-Ray
Disc Rewritable), which can store a large quantity of high-quality
video and audio data. As a result, products associated with such
discs have also been developed. Such products are expected to be
commercially available in the near future.
[0006] FIG. 1 illustrates apart of the configuration of an optical
disc apparatus such as a video disc recorder (VDR) for recording or
reproducing signals recorded on a storage medium such as a BD-RE.
As shown in FIG. 1, the optical disc apparatus includes an optical
pickup 2 for reading out a signal recorded on a storage medium 1
such as a BD-RE or recording a data stream externally inputted
thereto and subjected to a signal processing procedure, a VDR
system 3 for reproducing the signal read out by the optical pickup
2 or converting a data stream externally inputted thereto into a
data stream to be appropriately recordable, and an encoder 4 for
encoding an analog signal externally inputted thereto, and
outputting the encoded signal to the VDR system 3.
[0007] The VDR system 3 of the optical disc apparatus having the
above mentioned configuration may manage recording of a dubbed
audio stream, as an auxiliary audio stream, corresponding to the
A/V stream recorded on the BD-RE1. This will be described in detail
hereinafter.
[0008] FIG. 2 illustrates a linked condition between real play
lists and virtual play lists in a rewritable optical disc, for
example, a BD-RE. A/V streams are sequentially recorded on a BD-RE,
for example, the BD-RE 1 of FIG. 1, in the unit of clips, and
managed for recording and reproduction thereof by real play lists
containing play control information for reading and reproduction of
the A/V streams in the unit of clips and being recorded on the
BD-RE 1, respectively. For example, a main A/V stream corresponding
to a first clip, that is, a first clip main A/V stream (Clip 1 Main
A/V Stream), is managed for its recording and reproduction by a
first real play list (Real PlayList 1) containing play control
information for reading and reproduction of the first clip main A/V
stream, as shown in FIG. 2.
[0009] Meanwhile, a dubbed audio stream corresponding to a clip
main stream is additionally recorded on the BD-RE 1 as a new clip
auxiliary audio stream or a clip dubbed audio stream. For example,
a dubbed audio stream corresponding to the first clip main stream
linked to the first real play list is recorded as a second clip
dubbed audio stream (Clip 2 Auxiliary Audio Stream). This second
clip dubbed audio stream is managed for its recording and
reproduction by a second real play list (Real PlayList 2).
[0010] Also, the VDR system 3 of the above mentioned optical disc
apparatus produces and records virtual play lists in order to allow
the user to optionally select, edit, and play real play lists
recorded and managed in the above mentioned procedure. As shown in
FIG. 2, such a virtual play list, for example, a first virtual play
list (Virtual PlayList 1) associated with the first real play list,
may include a play item (PlayItem) for a main path adapted to read
out and reproduce the first clip main A/V stream linked to the
first real play list, and a sub play item (SubPlayItem) for a sub
path adapted to read out and reproduce the second clip dubbed audio
stream linked to the second real play list.
[0011] Accordingly, the VDR system 3 of the optical disc apparatus
can selectively reproduce the second clip dubbed audio stream
managed by the second real play list at the request of the user
during a reproducing operation thereof in which the first clip main
A/V stream managed by the first real play list is read out and
reproduced. Thus, the user can view the video image of the first
clip main A/V stream and simultaneously listen to the audio sound
of the second clip dubbed audio stream.
[0012] In rewritable optical discs such as the above mentioned
BD-RE, however, there is a limitation in that only one play item
and only one sub play item can be recorded in a virtual play list
produced and recorded in an editing procedure performed by the
user. For this reason, only one dubbed audio stream can be
additionally recorded and managed for each of clip main A/V streams
sequentially recorded in the unit of clips. As a result, there is a
problem in that it is impossible to record and manage several
dubbed audio streams desired by the user and to link the dubbed
audio streams to one clip main A/V stream. Nevertheless, there is
no method capable of efficiently solving this problem.
SUMMARY OF THE INVENTION
[0013] Therefore, the present invention has been made in view of
this and other limitations, and an object of the invention is to
provide a method for managing additional recording and reproduction
of a multi-dubbed audio stream for a clip-unit main A/V stream
recorded on a storage medium such as a high-density rewritable
optical disc.
[0014] In accordance with one aspect, the present invention
provides a method for managing recording of a multi-dubbed audio
stream corresponding to a clip-unit main A/V stream, comprising the
steps of: producing virtual play lists, the number of which
corresponds to the number of dubbed audio streams desired by a user
in association with the clip-unit main A/V stream, for reading and
reproduction of the dubbed audio streams; and recording common link
information, for reading and reproduction of the clip-unit main A/V
stream, in the virtual play lists, while recording distinct link
information, for reading and reproduction of the dubbed audio
streams associated therewith, in the virtual play lists,
respectively.
[0015] In accordance with another aspect, the present invention
provides a method for recording and managing a multi-dubbed audio
stream, comprising the steps of: producing and recording a real
play list and virtual playlists for reading and reproduction of a
clip-unit main A/V stream and a plurality of dubbed audio streams
associated with the clip-unit main A/V stream, respectively; and
recording management information for searching for and reading out
the real play list and the virtual play lists, in an `info.dvr`
file included in a `VDR` directory having an order lower than a
highest-order root directory in a file structure of a rewritable
storage medium.
[0016] In accordance with another aspect, the present invention
provides a method for managing reproduction of a multi-dubbed audio
stream, comprising the steps of: searching for and reading out play
list management information about multiple dubbed audio streams,
which is recorded in a file, other than play list files, provided
in a file structure of a rewritable storage medium; and reading out
and reproducing a main A/V stream and multiple dubbed audio streams
respectively linked to play lists identified by referring to the
play list management information.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above objects, and other features and advantages of the
present invention will become more apparent after a reading of the
following detailed description when taken in conjunction with the
drawings, in which:
[0018] FIG. 1 is a schematic view illustrating a part of the
configuration of an optical disc apparatus such as a video disc
recorder (VDR);
[0019] FIG. 2 is a schematic diagram illustrating a linked
condition between real play lists and virtual play lists in a
rewritable optical disc, for example, a BD-RE;
[0020] FIG. 3 is a schematic diagram illustrating a linked
condition between real play lists and virtual play lists recorded
and managed by a method for managing recording and reproduction of
multi-dubbed audio stream in accordance with the present invention;
and
[0021] FIGS. 4 and 5 are schematic diagrams each illustrating the
syntax of an `info.dvr` file in which management information about
multiple dubbed audio streams is additionally recorded by the
multi-dubbed audio stream recording and reproduction managing
method according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0022] Now, preferred embodiments of a method for managing
recording and reproduction of a multi-dubbed audio stream in
accordance with the present invention will be described in detail
with reference to the annexed drawings.
[0023] The multi-dubbed audio stream recording and reproduction
managing method according to the present invention is applicable to
the optical disc apparatus having the configuration described
hereinbefore in conjunction with FIG. 1. The VDR system 3 of the
optical disc apparatus can additionally record multiple dubbed
audio streams, desired by the user, corresponding to each of
clip-unit A/V streams sequentially recorded on a BD-RE, for
example, the BD-RE 1, in the unit of clips. The VDR system 3 can
also produce management information for managing recording and
reproduction of the multiple dubbed audio streams, so that the
multiple dubbed audio streams are managed to be compatible with the
file structure and format of the BD-RE 1.
[0024] For example, as shown in FIG. 3, a main A/V streams,
sequentially recorded on the BD-RE 1, of a first clip, that is, a
first clip main A/V stream (Clip 1 Main A/V Stream), is managed for
its recording and reproduction by a first real play list (Real
PlayList 1) containing play control information for reading and
reproduction of the first clip main A/V stream and being recorded.
Also, a second clip auxiliary audio stream or a second clip dubbed
audio stream (Clip 2 Auxiliary Audio Stream), which corresponds to
the first clip main A/V stream and is additionally recorded, is
managed for its recording and reproduction by a second real play
list (Real PlayList 2) containing play control information for
reading and reproduction of the second clip dubbed audio stream and
being recorded.
[0025] Also, the VDR system 3 of the optical disc apparatus
produces and records virtual play lists (Virtual PlayList) in order
to allow the user to optionally select, edit, and play real play
lists recorded and managed in the above mentioned procedure. As
described in conjunction with FIG. 2, such a virtual play list, for
example, a first virtual play list (Virtual PlayList 1) associated
with the first real play list, is recorded with a play item
(PlayItem) for a main path adapted to read out and reproduce the
first clip main A/V stream linked to the first real play list, and
a sub play item (SubPlayItem) for a sub path adapted to read out
and reproduce the second clip dubbed audio stream linked to the
second real play list.
[0026] Meanwhile, under the condition in which the dubbed audio
stream corresponding to the first clip main A/V stream, that is,
the second clip dubbed audio stream, is additionally recorded, as
described above, the VDR system 3 may be requested by the user to
additionally record another dubbed audio stream corresponding to
the first clip main A/V stream. In this case, the VDR system 3
records the additional dubbed audio stream as a third clip
auxiliary audio stream or a third clip dubbed audio stream (Clip 3
Auxiliary Audio Stream).
[0027] Also, a third real play list (Real PlayList 3) is produced
and recorded which contains play control information for reading
and reproduction of the third clip dubbed audio stream. In
addition, a second virtual play list (Virtual PlayList 2) is
produced and recorded. In this case, the second virtual play list
is recorded with the play item (PlayItem), which is duplicated from
the play item of the first virtual play list, for the main path
adapted to read out and reproduce the first clip main A/V stream
linked to the first real play list, and a sub play item
(SubPlayItem) for a sub path adapted to read out and reproduce the
third clip dubbed audio stream linked to the third real play
list.
[0028] That is, the VDR system 3 produces virtual play lists, the
number of which corresponds to the number of dubbed audio streams
associated with each of clip-unit main A/V streams, for reading and
reproduction of the dubbed audio streams. The virtual play lists
are recorded with a common play item for a main path adapted to
read out and reproduce the associated clip-unit main A/V stream and
with sub play items for distinct sub paths adapted to read out and
reproduce the dubbed audio streams corresponding to the virtual
play lists, respectively.
[0029] The real play lists and virtual play lists produced in the
above described procedure are recorded and managed as play list
files *.rolls and *.vpls in a `PLAYLIST` subdirectory included in
the file structure of the BD-RE 1, respectively. Also, play list
management information for each multi-dubbed audio stream is also
produced for searching and managing all of the play list files.
This play list management information is recorded in an `info.dvr`
file included in a `DVR` directory having an order lower than a
highest-order `Root` directory.
[0030] The play list management information may be recorded in the
form of a data block, data_block, in a manufacturer's private data
recording area, MakersPrevateData, arranged in the `info.dvr` file
for the manufacturer of the BD-RE to optionally record desired
diverse information.
[0031] As shown in FIG. 5, the play list management information
recorded in the form of the data block data_block in the
manufacturer's private data recording area includes information
multi_dub_exit_flag about a flag set in the case of additionally
recording multiple dubbed audio streams for each clip-unit main A/V
stream, multi-dubbed virtual play list numbers,
set_multi_dub_VPL_number, produced and recorded when the flag is
set, information ref_RPL_index about an index for referring to the
real play list linked to the play item for the main path included
in the virtual play lists associated with the multiple dubbed audio
streams, information dub_total_VPL_number about the total number of
the virtual play lists respectively corresponding to the multiple
dubbed audio streams, and information VPL_index[j] about indexes
for respective virtual play lists corresponding to the multiple
dubbed audio streams.
[0032] Since the above described play list management information
for each multi-dubbed audio stream is recorded in the form of a
data block in the manufacturer's private data recording area
provided in the `info.dvr` file in accordance with the multi-dubbed
audio stream recording and reproduction managing method of the
present invention, the predetermined syntax of the `info.dvr` file
is maintained as it is. Also, the predetermined file structure of
the BD-RE is maintained as it is.
[0033] Alternatively, the play list management information for each
multi-dubbed audio stream may be recorded in a region, other than
the manufacturer's private data recording area, provided in the
`info.dvr` file, for example, an area between a play list table
information (TableOfPlayList) recording area and the manufacturer's
private data recording area.
[0034] Meanwhile, the VDR system 3 searches for and refers to the
play list management information about multiple dubbed audio
streams additionally recorded in the `info.dvr` file, thereby
identifying whether or not there are multiple dubbed audio streams
recorded on the BD-RE. If there are multiple dubbed audio streams,
then the VDR system 3 identifies virtual play list information for
reading and reproduction of the multiple dubbed audio streams, and
information about the total number of virtual play lists associated
with the multiple dubbed audio streams.
[0035] Thereafter, the VDR system 3 reads out and reproduces a main
A/V stream and the multiple dubbed audio streams linked to the
identified virtual play lists. For example, the VDR system 3 can
selectively reproduce the second clip dubbed audio stream managed
by the second real play list or the third clip dubbed audio stream
managed by the third real play list at the request of the user
during a reproducing operation thereof in which the first clip main
A/V stream managed by the first real play list is read out and
reproduced. Thus, the user can view the video image of the first
clip main A/V stream and simultaneously listen to the audio sound
of the second clip dubbed audio stream or the third clip dubbed
audio stream.
[0036] Although the preferred embodiments of the invention have
been disclosed for illustrative purposes, those skilled in the art
will appreciate that various modifications, additions and
substitutions are possible, without departing from the scope and.
spirit of the invention as disclosed in the accompanying
claims.
[0037] As apparent from the above description, the present
invention provides a method for managing recording and reproduction
of a multi-dubbed audio stream in accordance with the present
invention which is capable of additionally recording and managing
multiple dubbed audio streams for each clip-unit main A/V stream,
and selectively reproducing diverse dubbed audio streams desired by
the user. Thus, the present invention is very useful.
* * * * *