U.S. patent application number 11/325493 was filed with the patent office on 2006-07-27 for method and apparatus for reproducing data from recording medium using local storage.
Invention is credited to Byung Jin Kim, Kang Soo Seo, Jea Yong Yoo.
Application Number | 20060164930 11/325493 |
Document ID | / |
Family ID | 37172370 |
Filed Date | 2006-07-27 |
United States Patent
Application |
20060164930 |
Kind Code |
A1 |
Seo; Kang Soo ; et
al. |
July 27, 2006 |
Method and apparatus for reproducing data from recording medium
using local storage
Abstract
An apparatus for reproducing data recorded on a recording medium
includes a pickup unit, a plurality of local storages, and a
controller. The pickup unit reads a disc package from the recording
medium. The local storages store multiple binding units associated
with the disc package, and the controller generates a virtual
package by binding the multiple binding units and the disc package
according to binding priorities of files included in the multiple
binding units. When the multiple binding units include two or more
identical files to be bound, a file having a highest binding
priority is selected in the virtual package.
Inventors: |
Seo; Kang Soo; (Anyang-si,
KR) ; Yoo; Jea Yong; (Seoul, KR) ; Kim; Byung
Jin; (Seongnam-si, KR) |
Correspondence
Address: |
HARNESS, DICKEY & PIERCE, P.L.C.
P.O. BOX 8910
RESTON
VA
20195
US
|
Family ID: |
37172370 |
Appl. No.: |
11/325493 |
Filed: |
January 5, 2006 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60641780 |
Jan 7, 2005 |
|
|
|
Current U.S.
Class: |
369/30.1 ;
G9B/27.012; G9B/27.021; G9B/7.009 |
Current CPC
Class: |
G11B 20/1217 20130101;
G11B 27/329 20130101; G11B 20/10 20130101; G11B 2020/1288 20130101;
G11B 27/034 20130101; G11B 27/105 20130101; G11B 20/00115 20130101;
G11B 7/004 20130101; G11B 27/10 20130101; G11B 2220/2541 20130101;
G11B 20/00086 20130101; G11B 27/11 20130101 |
Class at
Publication: |
369/030.1 |
International
Class: |
G11B 7/085 20060101
G11B007/085; G11B 21/08 20060101 G11B021/08 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 26, 2005 |
KR |
10-2005-0101231 |
Claims
1. A method for reproducing data recorded on a recording medium
using a plurality of local storages, the method comprising: reading
a disc package recorded on the recording medium; reading multiple
binding units associated with the disc package and stored in the
plurality of local storages; reading binding information included
in each binding unit; generating a virtual package by binding the
multiple binding units and the disc package according to binding
priorities of files included in the multiple binding units, wherein
the binding priorities are determined based on the binding
information included in each binding unit; and reproducing the
virtual package.
2. The method according to claim 1, wherein a file having a highest
binding priority is selected in the virtual package when the
multiple binding units and the disc package include two or more
identical files to be bound.
3. The method according to claim 1, wherein binding priorities of
files included in the multiple binding units are based on binding
priorities of the multiple binding units.
4. The method according to claim 3, wherein a binding unit having
the most recent binding unit manifest file has a highest priority
among the multiple binding units.
5. The method according to claim 1, wherein the plurality of local
storages comprises at least one local storage built-in a data
reproducing device and at least one local storage removable from
the data reproducing device.
6. The method according to claim 1, wherein the multiple binding
units and the disk package are bound simultaneously.
7. The method according to claim 1, wherein the multiple binding
units and the disk package are bound by a data reproducing device
which is not connected to a network.
8. The method according to claim 1, wherein each of the multiple
binding units includes disc specific data and shared data.
9. The method according to claim 1, wherein each of the multiple
binding units has a file structure in which files are configured by
titles.
10. The method according to claim 9, wherein the file structure of
the multiple binding units is identical to a file structure of the
disc package.
11. The method according to claim 9, wherein the file structure of
the multiple binding units is not identical to a file structure of
the disc packet.
12. The method according to claim 1, wherein the binding
information comprises binding unit manifest information.
13. The method according to claim 12, wherein the binding unit
manifest information is included in a binding unit manifest file,
and wherein the binding unit manifest information includes name
mapping information associated with files contained in each
multiple binding unit.
14. The method according to claim 1, wherein the local storage
includes a directory capable of identifying downloaded data.
15. The method according to claim 1, wherein each binding unit has
a disc specific area and a shared area, and wherein binding
priorities of files included in the disc specific area are higher
than binding priorities of files included in the shared area.
16. The method according to claim 1, wherein binding priorities of
files included in the multiple binding units are higher than
binding priorities of files included in the disc package.
17. The method according to claim 1, wherein the disc package
includes a first index file and a first object file and one of the
multiple binding units includes a second index file and a second
object file, and wherein the virtual package includes the second
index file and the second object file.
18. The method according to claim 1, wherein the virtual package
includes a virtual playlist file which is generated by combining a
playlist file contained in the disk package with at least one
playlist file contained in the multiple binding units.
19. The method according to claim 1, wherein a virtual file system
is used for generating the virtual package.
20. The method according to claim 1, wherein a file structure of
the virtual package is identical to a file structure of the disc
package.
21. A method for generating a virtual package, the method
comprising: reading multiple binding units from a plurality of
local storages, each binding unit including a directory storing
data associated with a disc package recorded on a recording medium;
and generating a virtual package by binding the multiple binding
units with the disk package according to binding priorities of the
multiple binding units.
22. The method according to claim 21, wherein a file included in a
binding unit having a highest binding priority is selected in the
virtual package when the multiple binding units include two or more
identical files to be bound.
23. An apparatus for reproducing data recorded on a recording
medium, the apparatus comprising: a pickup unit for reading a disc
package from the recording medium; a plurality of local storages
for storing multiple binding units associated with the disc
package; and a controller for generating a virtual package by
binding the multiple binding units and the disc package according
to binding priorities of files included in the multiple binding
units.
24. The apparatus of claim 23, wherein a file having a highest
binding priority is selected in the virtual package when the
multiple binding units include two or more identical files to be
bound.
25. The apparatus of claim 23, wherein the controller determines
the binding priorities of the files included in the multiple
binding units using binding information included in each binding
unit.
Description
[0001] This application claims the benefit of Korean Patent
Application No. 10-2005-0101231, filed on Oct. 26, 2005, which is
hereby incorporated by reference as if fully set forth herein.
[0002] This application claims the benefit of U.S. Provisional
Application No. 60/641,780, filed on Jan. 7, 2005, in the name of
inventors Kang Soo SEO, Byung Jin KIM, and Jea Yong YOO, entitled
"METHOD AND APPARATUS FOR RECORDING MANAGEMENT INFORMATION ON A
RECORDING MEDIUM AND THE RECORDING MEDIUM", which is hereby
incorporated by reference as if fully set forth herein.
BACKGROUND OF THE INVENTION
[0003] 1. Field of the Invention
[0004] The present invention relates to a method and apparatus for
reproducing data from a recording medium, and more particularly to
a method and apparatus for reproducing data from a recording medium
using a local storage contained in an optical recording/reproducing
device.
[0005] 2. Discussion of the Related Art
[0006] Generally, there has been widely used an optical disc acting
as a recording medium capable of recording a large amount of data
therein. Particularly, there has recently been developed a
high-density optical recording medium capable of recording/storing
high-quality video data and high-quality audio data for a long
period of time, for example, a Blu-ray Disc (BD).
[0007] The BD based on the next-generation recording medium
technique has been considered to be the next-generation optical
recording solution capable of storing much more data than a
conventional DVD. In recent times, many developers have conducted
intensive research into the international standard technical
specification associated with the BD along with those of other
digital devices.
[0008] In association with the above-mentioned situation, there has
recently been developed an optical recording/reproducing device
based on the BD international standard, but the BD international
standard has not yet been completed, such that many limitations and
problems occur in developing the optical recording/reproducing
device.
[0009] Particularly, the above-mentioned optical
recording/reproducing device must consider not only a basic
function for recording/reproducing data of the BD, but also an
additional function for enabling the optical recording/reproducing
device to interact with peripheral digital devices. In other words,
the optical recording/reproducing device must receive an external
input signal, must display the received signal, and must reproduce
desired data using the external input signal and the BD.
[0010] However, an apparatus for reproducing data from the
recording medium to simultaneously reproduce the external input
signal and data of the BD has not yet been established, such that
many limitations and problems occur in developing a BD-based
optical recording/reproducing device.
SUMMARY OF THE INVENTION
[0011] Accordingly, the present invention is directed to a method
and apparatus for reproducing data from a recording medium using a
local storage that substantially obviate one or more problems due
to limitations and disadvantages of the related art.
[0012] An object of the present invention is to provide a method
and apparatus for downloading data from an external part, storing
the downloaded data in a plurality of local storages, and
effectively reproducing data recorded in the local storages and
data recorded in a recording medium such as a BD.
[0013] Additional advantages, objects, and features of the
invention will be set forth in part in the description which
follows and in part will become apparent to those having ordinary
skill in the art upon examination of the following or may be
learned from practice of the invention. The objectives and other
advantages of the invention may be realized and attained by the
structure particularly pointed out in the written description and
claims hereof as well as the appended drawings.
[0014] To achieve these objects and other advantages and in
accordance with the purpose of the invention, as embodied and
broadly described herein, a method for reproducing data recorded on
a recording medium using a plurality of local storages, the method
comprises reading a disc package recorded on the recording medium;
reading multiple binding units associated with the disc package and
stored in the plurality of local storages; reading binding
information included in each binding unit; generating a virtual
package by binding the multiple binding units and the disc package
according to binding priorities of files included in the multiple
binding units, wherein the binding priorities are determined based
on the binding information included in each binding unit; and
reproducing the virtual package.
[0015] In another aspect of the present invention, there is
provided a method for generating a virtual package, the method
comprises reading multiple binding units from a plurality of local
storages, each binding unit including a directory storing data
associated with a disc package recorded on a recording medium; and
generating a virtual package by binding the multiple binding units
with the disk package according to binding priorities of the
multiple binding units.
[0016] In yet another aspect of the present invention, there is
provided an apparatus for reproducing data recorded on a recording
medium, the apparatus comprises a pickup unit for reading a disc
package from the recording medium; a plurality of local storages
for storing multiple binding units associated with the disc
package; and a controller for generating a virtual package by
binding the multiple binding units and the disc package according
to binding priorities of files included in the multiple binding
units.
[0017] It is to be understood that both the foregoing general
description and the following detailed description of the present
invention are exemplary and explanatory and are intended to provide
further explanation of the invention as claimed.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings, which are included to provide a
further understanding of the invention and are incorporated in and
constitute a part of this application, illustrate embodiment(s) of
the invention and together with the description serve to explain
the principle of the invention. In the drawings:
[0019] FIG. 1 is a conceptual diagram illustrating a method and
apparatus for reproducing data from a recording medium according to
the present invention;
[0020] FIG. 2 is a conceptual diagram illustrating a file structure
recorded in an optical disc acting as a recording medium and a
method for reproducing a specific title using the file
structure;
[0021] FIG. 3 is a structural diagram illustrating a data record
structure of an optical disc acting as a recording medium according
to the present invention;
[0022] FIG. 4A is a block diagram illustrating an optical
recording/reproducing device according to the present
invention;
[0023] FIG. 4B is a block diagram illustrating an apparatus for
reproducing data using a local storage from among overall
components contained in the optical recording/reproducing device
according to the present invention;
[0024] FIG. 5 is a conceptual diagram illustrating a method for
generating a virtual package capable of simultaneously reproducing
data recorded in a recording medium and data recorded in a local
storage according to the present invention;
[0025] FIG. 6A is a structural diagram illustrating a local storage
binding unit for generating a virtual package in accordance with a
preferred embodiment of the present invention;
[0026] FIG. 6B is a structural diagram illustrating a binding unit
of a local storage for generating a virtual package in accordance
with another preferred embodiment of the present invention;
[0027] FIG. 7 is a conceptual diagram illustrating a method for
generating the virtual package using a virtual file system (VFS) on
the basis of a file structure according to the present invention;
and
[0028] FIG. 8 is a flow chart illustrating a method for reproducing
data from a recording medium using a local storage according to the
present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0029] Reference will now be made in detail to the preferred
embodiments of the present invention, examples of which are
illustrated in the accompanying drawings. Wherever possible, the
same reference numbers will be used throughout the drawings to
refer to the same or like parts.
[0030] A method and apparatus for reproducing data from a recording
medium using a local storage will hereinafter be described with
reference to the annexed drawings.
[0031] Prior to describing the present invention, it should be
noted that most terms disclosed in the present invention correspond
to general terms well known in the art, but some terms have been
selected by the applicant as necessary and will hereinafter be
disclosed in the following description of the present invention.
Therefore, it is preferable that the terms defined by the applicant
be understood on the basis of their meanings in the present
invention.
[0032] A recording medium for use in the present invention is
indicative of all recordable mediums, for example, an optical disc,
and a magnetic tape, etc., according to various recording schemes.
It should be noted that the term "Disc" is considered to be the
same as the recording medium according to the present
invention.
[0033] For the convenience of description and better understanding
of the present invention, the optical disc, such as a BD, will
hereinafter be exemplarily used as the above-mentioned recording
medium in the present invention. It should be noted that technical
ideas of the present invention can be applied to other recording
mediums without departing from the scope and spirit of the
invention.
[0034] The term "local storage" is indicative of a storage unit
contained in an optical recording/reproducing device 10 shown in
FIG. 1. In more detail, the term "local storage" is indicative of a
component capable of receiving necessary information or data from a
user, and storing the received information or data. For example, a
general local storage may be indicative of a Hard Disc Drive (HDD),
but it should be noted that the term "local storage" of the present
invention is not limited to the HDD, and is applicable to other
examples as necessary. It is obvious to those skilled in the art
that the local storage may be connected/disconnected to/from the
optical recording/reproducing device, and may be implemented with a
portable recording medium (e.g., a portable HDD, and a portable
flash memory, etc.)
[0035] Particularly, the term "local storage" is indicative of a
storage unit for storing data associated with a recording medium
such as a BD. The data associated with the recording medium is
generally downloaded from an external device.
[0036] In association with the above-mentioned description, it is
obvious to those skilled in the art that the local storage may
directly read some permission data from the recording medium, and
may generate system data (e.g., metadata) associated with
record/reproduction operations of the recording medium, such that
the system data may be stored in the local storage.
[0037] The term "binding unit" is indicative of a set of files
stored in the local storage. Particularly, the binding unit is
indicative of a set of information (i.e., information set)
associated with a specific recording medium. In this case, the
information set is replaced with, is added (or appended) to, or is
merged with data contained in the recording medium by information
of the binding unit manifest files, such that it can simultaneously
reproduce data of the recording medium and data of the local
storage. A detailed description of the binding unit will be
described later.
[0038] For the convenience of description, data recorded in the
recording medium is referred to as "original data", and data
associated with the recording medium from among a plurality of data
units stored in the local storage is referred to as "additional
data".
[0039] FIG. 1 is a conceptual diagram illustrating a method and
apparatus for reproducing data according to the present invention.
Unified usages of the optical recording/reproducing 10 and
peripheral devices are shown in FIG. 1.
[0040] The optical recording/reproducing device 10 can
record/reproduce data in/from various optical discs having
different formats. If necessary, the optical recording/reproducing
device 10 can record/reproduce specific data in/from only a
specific optical disc such as a BD, or can reproduce the data from
the optical disc without recording the data in the same. It should
be noted that the present invention exemplarily uses a BD-player
capable of reproducing data from the BD or a BD-recorder capable of
recording data in the BD in consideration of correlation between
the BD and peripheral devices for the convenience of description.
It is well known in the art that the optical recording/reproduction
device 10 is also applicable to a drive embedded in a specific
device such as a computer.
[0041] The optical recording/reproducing device 10 records or
reproduces data in/from the optical disc 30, receives an external
input signal, performs a signal process on the received signal, and
transmits the signal processed result to the external display 20,
such that a user can view the signal processed result on the
display 20. In this case, there is no limitation in a receivable
external signal. For example, representative external input signals
may be determined to be a DTV-associated signal and an
Internet-associated signal, etc. Specifically, the Internet is
indicative of a communication network to which a user easily gains
access, such that the user can download specific Internet data
using the optical recording/reproducing device 10, and can use the
downloaded data.
[0042] In association with the above-mentioned description, a
person for providing content data used as an external source is
generally referred to as a content provider (CP).
[0043] When original data is recorded in the optical disc 30 seated
in the optical recording/reproducing device 10, and additional data
associated with the original data is present in other storage
places (e.g., Internet), the present invention aims to reproduce
the original data and the additional data at the same time.
[0044] For example, it is assumed that multiplexed AV (Audio/Video)
streams are recorded as the original data recorded in the optical
disc, and additional data for use in the Internet is an audio
stream different from an audio stream (e.g., Korean) of the
original data. In this case, some users may download a specific
audio stream (e.g., English) acting as additional data from the
Internet, may desire to reproduce the downloaded audio stream along
with the AV stream acting as original data, or may desire to
reproduce only the additional data. In order to implement the
above-mentioned desires of the users, correlation between the
original data and the additional data must be established, and
there is needed a systemized method for managing/reproducing the
above-mentioned data according to a user request.
[0045] For the convenience of description, although a signal
recorded in the disc is called the original data, and other signals
existing in the outside of the disc are called the additional data,
it should be noted that the original data and the additional data
are not limited to only specific data.
[0046] Generally, additional data may be indicative of audio data,
presentation graphic (PG) data, interactive graphic (IG) data, or
text subtitle, etc., but the additional data may also be indicative
of a multiplexed AV stream including the above-mentioned data and
video data. In other words, data associated with the original data
simultaneously existing in the outside of the optical disc may act
as additional data.
[0047] In order to satisfy the above-mentioned user requests, a
predetermined file structure must be established between the
original data and the additional data. Accordingly, a file
structure and data record structure for use in the BD will
hereinafter be described with reference to FIGS. 2.about.3.
[0048] FIG. 2 is a conceptual diagram illustrating a file structure
for reproducing/managing the original data recorded in an optical
disc, and a method for reproducing a specific title according to
the file structure.
[0049] An example of the above-mentioned file structure is shown in
FIG. 2. The file structure according to the present invention
includes one or more BD directories (BDMV) under a single root
directory. The BD directory (BDMV) includes not only an index file
"index" acting as a general file (i.e., an upper file) capable of
guaranteeing user interactivity, but also the above-mentioned
object. The file structure includes a variety of directories for
storing information of actual data recorded in a disc and other
information associated with a method for reproducing the data, for
example, a playlist directory (PLAYLIST), a clip information
directory (CLIPINF), a stream directory (STREAM), an auxiliary data
directory (AUXDATA), and a backup directory (BACKUP). The
above-mentioned directories and a variety of files included in the
directory will hereinafter be described.
[0050] The auxiliary data directory (AUXDATA) includes an
additional data file for reproducing data of the disc. For example,
the AUXDATA directory includes a "Sound.bdmv" file for providing a
user with sound data when an interactive graphic function is
executed, and an "11111.otf" file for providing the user with font
information when data of the disc is reproduced.
[0051] The stream directory (STREAM) includes a plurality of AV
stream files recorded in a disc according to a specific format.
Generally, individual streams are recorded using an MPEG-2 based
transport packet, and the stream directory (STREAM) uses extension
names of stream files (01000.m2ts and 02000.m2ts) as a specific
extension name ".star-solid..m2ts". Particularly, if
video/audio/graphic information from among the above-mentioned
streams is multiplexed, the multiplexed information is called an AV
stream, and a single title is composed of at least one AV stream
file.
[0052] The clip information (Clip-info) directory (CLIPINF) is
composed of a plurality of clip-info files (01000.clpi and
02000.clpi) connected to the above-mentioned stream files on a
one-to-one basis. Particularly, the clip-info files
(.star-solid..clpi) record attribute information and timing
information of the stream files (.star-solid..m2ts) therein. The
clip-info files (.star-solid..clpi) connected to the stream files
(.star-solid..m2ts) on a one-to-one basis are generically named a
"Clip". In other words, this means that a single clip is indicative
of data composed of a stream file (.star-solid..m2ts) and a
clip-info file (.star-solid..clpi).
[0053] The playlist directory (PLAYLIST) includes a plurality of
playlist files (.star-solid..mpls). Each playlist file
(.star-solid..mpls) includes one or more playitems (PlayItem) and
one or more sub-playitems (SubPlayItem). Each playitem (PlayItem)
and each sub-playitem (SubPlayItem) are adapted to designate a
playing interval during which a specific clip is reproduced. The
playitem (PlayItem) and the sub-playitem (SubPlayItem) include
information associated with a specific clip to be reproduced, i.e.,
information associated with a reproduction start time (IN-Time) and
other information associated with a reproduction termination time
(OUT-Time) of the specific clip.
[0054] In association with the above-mentioned description, a
process for reproducing data using at least one playitem (PlayItem)
in the playlist file is referred to as a main path, and a process
for reproducing data using individual sub-play items (SubPlayItem)
is referred to as a sub-path. The playlist file must contain a
single main path. The playlist file may contain at least one
sub-path according to the presence or absence of the sub-playitem
(SubPlayItem) as necessary.
[0055] In conclusion, the playlist file acts as a basic
reproduction/management file unit contained in overall
reproduction/management file structures for reproducing a desired
clip by combination of one or more playitems (PlayItem).
[0056] The backup directory (BACKUP) stores a plurality of
duplicate files, i.e., a duplicate file (also called "copied
files") of the index file "index" storing information associated
with disc reproduction, a duplicate file of the object file
"MovieObject", duplicate files of all playlist files
(.star-solid..mpls) contained in the playlist directory (PLAYLIST),
and duplicate files of all clip-info files (.star-solid..clpi)
contained in the clip-info directory (CLIPINF). If the
above-mentioned files ("index", "MovieObject", ".star-solid..mpls",
and ".star-solid..clpi") are damaged, a disc reproduction process
is also fatally damaged, such that the backup directory (BACKUP) is
designed to pre-store duplicate files of the above-mentioned files
as backup files.
[0057] In association with the above-mentioned description, a
method for reproducing a specific title using the above-mentioned
disc file structure is shown in FIG. 2.
[0058] If a user enters a title reproduction command in association
with a title used as an index file (also called "index table"),
reproduction of the title begins. A detailed description thereof
will hereinafter be described.
[0059] The index file (index.bdmv) includes first playback
information "First Playback" indicative of information associated
with a first reproduction image when data of a corresponding disc
is loaded, top menu information "Top Menu" for providing a menu
image, and at least one title information "Title #1.about.Title
#n".
[0060] If the optical disc 30 is loaded in the optical
recording/reproducing device 10, title menu information associated
with the index table is provided to the user via the display 20. If
the user selects a specific title or a specific menu contained in a
menu image, data reproduction begins according to a scenario
pre-defined by a disc manufacturer. In other words, if the user
enters a command for reproducing a specific title (e.g., title #1),
a specific playlist file is executed according to a command
contained in the object file (MovieObject) of the
reproduction/management file structure. Thereafter, one or more
clips (e.g., Clip #1.about.Clip #3) constructing the title #1 are
reproduced by a specific playitem and/or sub-playitem contained in
the playlist file according to the playlist file information.
[0061] FIG. 3 is a structural diagram illustrating a data record
structure recorded in a recording medium according to the present
invention. In more detail, FIG. 3 shows a disc record format of
information associated with the file structure. As shown in FIG. 3,
from the viewpoint of an inner area of the disc, the
above-mentioned disc structure sequentially includes a file system
information area serving as system information for managing overall
files, a database area for recording a playlist file and a
clip-info file to reproduce a recorded AV stream
(.star-solid..m2ts), and an AV stream area for recording a
plurality of streams composed of audio data, video data, and
graphic data, etc. Particularly, it should be noted that data
recorded in the AV stream area may be determined to be original
data as previously stated above.
[0062] The present invention provides a method and apparatus for
simultaneously reproducing original data (e.g., a file structure
shown in FIG. 2) recorded in the disc and additional data recorded
in the local storage, and a variety of preferred embodiments
according to the present invention will hereinafter be
described.
[0063] FIG. 4A is a block diagram illustrating the optical
recording/reproducing device 10 according to the present
invention.
[0064] Referring to FIG. 4A, the optical recording/reproducing
device 10 includes a pickup unit 11, a servo unit 14, a signal
processor 13, a local storage 15, and a microprocessor 16. The
pickup unit 11 reproduces original data recorded in the optical
disc and management information including reproduction/management
file information. The servo unit 14 controls operations of the
pickup unit 11. The signal processor 13 receives a reproduction
signal from the pickup unit 11, restores the received reproduction
signal to a desired signal value, or modulates a signal to be
recorded into another signal recorded in the optical disc, such
that it transmits the restored or modulated result. The local
storage stores data therein. The microprocessor 16 controls mutual
operations of the above-mentioned components.
[0065] When constructing the file structure for storing data
downloaded from an external part, the local storage 15 may be
composed of a plurality of local storages according to the present
invention. For the convenience of description, FIG. 7 shows an
example of two local storages (i.e., first and second local
storages), but it should be noted that the present invention is not
limited to the example of FIG. 7, and is applicable to other
examples as necessary.
[0066] A controller 12 downloads additional data from outside of
the optical disc upon receiving a command from a user, stores the
downloaded additional data in the local storage 15, and configures
a binding unit using Binding Unit Manifest Information recorded in
Binding unit manifest files of the local storage. In addition, the
controller 12 configures a virtual file structure (hereinafter
referred to as a virtual package) using the binding unit manifest
information recorded in the binding unit manifest files, such that
it can reproduce data contained in the recording medium and data
contained in the local storage. The controller reproduces the
original data and/or the additional data using the virtual package
upon receiving a request from a user.
[0067] The virtual package generated by the controller 12 includes
at least one virtual playlist including a playitem capable of
reproducing a plurality of clips.
[0068] The controller 12 performs the binding operation according
to a binding priority between at least one local storage binding
unit file and the disc package (i.e., the recording medium file
structure), such that it controls the method for generating the
virtual package. In this case, it is preferable that the controller
12 may determine the binding priority.
[0069] For example, if the first local storage has a priority
higher than that of the second local storage and a binding unit of
the first local storage and a binding unit of the second local
storage perform the binding operation, a file contained in the
binding unit of the first local storage having higher priority is
selected when the same file exists in the binding units of the
first and second local storages. Otherwise, if different files
exist in the aforementioned binding units, all files of the binding
units are selected to form the virtual package.
[0070] In association with the above-mentioned description, a
detailed description of the Binding Unit Manifest Files, the
Binding Unit Manifest Information, and the virtual package will
hereinafter be described with reference to the annexed
drawings.
[0071] The AV decoder 17 finally decodes output data (i.e.,
original data and/or additional data) upon receiving a control
signal from the controller 12, and provides the user with the
decoded result.
[0072] The AV encoder 18 converts an input signal into a specific
format signal (e.g., an MPEG2 transport stream) upon receiving a
control signal from the controller 12, and transmits the converted
result to the signal processor 13.
[0073] The new virtual package may be stored in the local storage
15 such that it can be re-used in future. Also, the new virtual
package may be temporarily stored in an additional dynamic memory,
and may then be used.
[0074] FIG. 4B is a block diagram illustrating an apparatus for
reproducing data of an optical disc using a local storage from
among overall components contained in the optical
recording/reproducing device 10 according to the present
invention.
[0075] Information stored in the local storage 15 will hereinafter
be described. The local storage 15 according to the present
invention stores file information (Directory-File for disc_id #n
dependent) including directories and files for every individual
disc identification (ID) information, and a plurality of additional
clips downloaded from an external part. A binding unit of the local
storage 15 is generated, and the local storage 15 may store binding
unit manifest information for a binding operation associated with a
disc file structure (i.e., a disc package).
[0076] Specifically, the local storage 15 may include a plurality
of file information units (Directory-File for Disc_id #n dependent)
to cope with different discs. Therefore, the local storage 15
additionally requires a file system for managing the
above-mentioned file information units. Specifically, the file
system is also referred to as a local storage file system 41, and
the local storage file system 41 is indicative of a system for
managing all files stored in the local storage 15.
[0077] Therefore, if an optical disc (e.g., disc_ID #1) of a
specific disc ID (disc_ID) is loaded in the optical
recording/reproducing device 10, the controller 12 contained in the
optical recording/reproducing device 10 recognizes ID information
of the disc using the pickup unit 11 and the signal processor 13.
If the local storage 15 stores file information, the controller
reads binding unit file information equal to the loaded disc ID
information from among all file information units stored in the
local storage 15, generates a virtual package by binding (or
combining) the read information and the disc package, and
reproduces both the original data of the disc and the additional
data of the local storage using the generated virtual package.
[0078] However, although a single local storage 15 and a local
storage file system 41 are depicted in FIG. 4B, the present
invention relates to an example of a plurality of local storages,
and it is obvious to those skilled in the art that the number of
local storages 15 may be determined to be a plural number and the
number of local storage file systems 41 may also be determined to
be a plural number.
[0079] A method for combining (or binding) the local storage data
with a disc package to form the virtual package will hereinafter be
described with reference to FIG. 5.
[0080] FIG. 5 is a conceptual diagram illustrating a method for
generating the above-mentioned virtual package to simultaneously
reproduce data of a recording medium and data of a local storage
according to the present invention.
[0081] If a specific disc is loaded in the optical
recording/reproducing device 10 on the condition that the
information and contents shown in FIG. 4b are stored in the local
storage 15, the optical recording/reproducing device 10 reads the
file system information 41 contained in the local storage 15, and
at the same time reads disc file system information 42 including
the file structure recorded in the disc, resulting in the creation
of the VFS. In more detail, the virtual file system (VFS) is
indicative of a file system virtually generated to manage both the
file system contained in the local storage 15 and the other file
system of the loaded disc.
[0082] The optical recording/reproducing device generates a new
virtual package to simultaneously reproduce original data recorded
in the disc and additional data recorded in the local storage using
the above-mentioned virtual file system (VFS). For this purpose,
the optical recording/reproducing device 10 reads file information
(Directory-File for disc_ID #1 dependent) associated with the disc
(e.g., disc_ID #1) from the file system, generates a binding unit
according the read binding unit manifest information, reads the
generates binding unit, and performs a binding operation for
replacing the read file information with a disc package of the
loaded disc (disc_ID #1) or appending the read file information to
the disc package.
[0083] In association with the above-mentioned description, the
binding unit manifest file according to the present invention
includes a list (i.e., Files and Titles relation List) indicative
of a relationship between files and titles; Name Mapping
information for performing mapping of all files contained in the
binding unit to form the virtual package; Progressive Playlist
information for progressive playlists; and Credential
information.
[0084] Specifically, the above-mentioned name mapping information
is used when file structure data of the local storage generates the
binding unit or when the binding unit is combined with the disc
package.
[0085] The virtual package generated by the above-mentioned binding
operation is indicative of a file structure for
reproducing/managing an original clip 422 and an additional clip
412. The original clip 422 is composed of original data recorded in
the disc. The additional clip 412 is composed of additional data
recorded in the local storage.
[0086] Preferred embodiments for generating the local storage
binding unit will hereinafter be described with reference to FIGS.
6A.about.6B. The preferred embodiments shown in FIGS. 6A.about.6B
are characterized in that the binding unit generates a file
structure including a directory in title units.
[0087] The aforementioned binding unit configured in title units
may have the same file structure as that of the recording medium.
If necessary, the binding unit may have a file structure different
from that of the recording medium.
[0088] FIG. 6A is a structural diagram illustrating a local storage
binding unit for generating a virtual package according to the
present invention. Specifically, the local storage shown in FIG. 6A
is referred to as a first local storage (Local Storage 1).
[0089] Referring to FIG. 6A, the binding unit manifest file
(disc_ID #1.bumf) 61 contained in the local storage file structure
includes mapping information for mapping individual files of a new
trailer (42005.mpls, 42005.clpi, and 42005.m2ts) to an auxiliary
data file (Japanese.otf) contained in the Shared directory of the
disc.
[0090] If the disc binding unit (Binding Unit of disc_ID #1) 71 is
generated by the aforementioned mapping information, a new-trailer
directory is located under the specific disc directory (disc_ID
#1). The aforementioned new-trailer directory includes a playlist
file (42005.mpls), a clip-info file (42005.clpi), and a stream file
(42005.m2ts). An auxiliary data file (Japanese.otf) is located
under the Shared directory.
[0091] In association with the above-mentioned description, all
files of the generated binding unit act as Read-only files, and the
aforementioned binding unit combined with the disc package
generates a new virtual package to reproduce data of the recording
medium and/or data of the local storage, and a method for
generating the virtual package will hereinafter be described with
reference to FIG. 7.
[0092] FIG. 6B is a structural diagram illustrating a binding unit
of a local storage for generating a virtual package in accordance
with another preferred embodiment of the present invention.
Specifically, the local storage shown in FIG. 6B is referred to as
a second local storage (Local Storage 2).
[0093] Referring to FIG. 6B, the binding unit manifest file
(disc_ID #1.bumf) 62 contained in the local storage file structure
includes mapping information for mapping individual files of a new
trailer (32005.mpls, 32005.clpi, and 32005.m2ts) to an auxiliary
data file (Japanese.otf) contained in the Shared directory of the
disc.
[0094] If the disc binding unit (Binding Unit of disc_ID #1) 72 is
generated by the aforementioned mapping information, a new-trailer
directory is located under the specific disc directory (disc_ID
#1). The aforementioned new-trailer directory includes a playlist
file (32005.mpls), a clip-info file (32005.clpi), and a stream file
(32005.m2ts). An auxiliary data file (Chinese.otf) is located under
the Shared directory.
[0095] In association with the above-mentioned description, all
files of the generated binding unit act as Read-only files, and the
aforementioned binding unit combined with the disc package
generates a new virtual package to reproduce data of the recording
medium and/or data of the local storage, and a method for
generating the virtual package will hereinafter be described with
reference to FIG. 7.
[0096] FIG. 7 is a conceptual diagram illustrating a method for
generating the virtual package using a virtual file system (VFS) on
the basis of a file structure according to the present
invention.
[0097] Referring to FIG. 7, in the case where a plurality of local
storages include contents data associated with a recording medium,
and there are Binding Unit Manifest files, the highest binding
priority is determined when the binding unit manifest files
contained in the local storage are generated at the latest time or
are generated at the initial time. If the binding priority is
established in the optical recording/reproducing device, the
optical recording/reproducing device will perform the binding
operation according to the aforementioned binding priority.
[0098] In addition, the optical recording/reproducing device may
include a Play Option menu for a user, such that the user can
freely assign a desired priority to a binding unit of any one of
local storages using the Play Option menu.
[0099] Specifically, the preferred embodiment of the present
invention shows a plurality of local storage (e.g., two local
storages (Local Storage 1 and Local Storage 2)), and it is assumed
that the binding priority of the local storage 1 is higher than
that of the local storage 2 when the binding operation is
performed.
[0100] In other words, when the disc package 73, the binding unit
71 of the local storage 1 the binding unit 72 of the local storage
2 perform the binding operation, the binding priority among the
local storage 1's file, the local storage 2's file, and the
recording medium file is determined in a descending numerical order
of the local storage 1's file.fwdarw.the local storage 2's
file.fwdarw.the recording medium file. In other words, the highest
binding priority is set to the local storage 1's file, the
intermediate binding priority is set to the local storage 2's file,
and the lowest binding priority is set to the recording medium
file.
[0101] Preferably, the file of the Disc Specific Area Binding Unit
may have priority higher than that of the Shared Area Binding
Unit.
[0102] A specific file structure (i.e., the disc package of FIG. 2)
is recorded in the loaded disc, and may be referred to as a disc
package. A local storage file system 41 is contained in the local
storage. The local storage file system 41 includes a binding unit
combined with the loaded disc (e.g., disc_ID #1), and Binding Unit
Manifest files.
[0103] In association with the above-mentioned description, the
binding unit is basically similar to the disc file structure (i.e.,
the disc package). If necessary, the binding unit configured in
title units may have the same file structure as that of the
recording medium, or may have a file structure different from that
of the recording medium.
[0104] It should be noted that the binding unit cannot be operated
as a reproduction/management file by itself, differently from the
disc package.
[0105] If it is assumed that the binding unit is designed to
perform data reproduction by itself, this data reproduction is
similar to data reproduction of the local storage, such that the
above-mentioned operations of the binding unit are contrary to the
purpose of the present invention for simultaneously reproducing
both original data recorded in the disc and additional data
recorded in the local storage.
[0106] Therefore, the virtual file system (VFS) specifically uses
name mapping information from among the above-mentioned binding
unit manifest files, and performs a binding operation by binding
(or combining) the binding unit updated to the local storage file
structure with the disc package contained in the loaded disc, such
that it generates a new virtual package.
[0107] Preferably, the generated virtual package may have the same
structure as that of the disc package.
[0108] For example, the disc package (org_ID #1, disc_ID #1)
contained in the disc includes an index file (Index.bdmv), an
object file (MovieObject.bdmv), a playlist file (00000.mpls), a
clip-info file (01000.clpi), a stream file (01000.m2ts), and an
auxiliary data file (sound.bdmv) in the BD directory (BDMV)
indicative of a lower directory of the root directory.
[0109] The newly-downloaded-updated binding unit associated with
the loaded disc (e.g., disc_ID #1) or the local storage 1's binding
unit 71, which is pre-downloaded and stored in the local storage,
includes a disc specific directory (disc_ID #1) and a disc Shared
directory (Shared) under the specific CP directory (e.g., an org_ID
#1).
[0110] The new-trailer directory indicative of a lower directory of
the disc specific directory (disc_ID #1) includes a specific
playlist file (42005.mpls) 711, a clip-info file (42005.clpi) 712
managed by the playlist file (42005.mpls) 711, and a stream file
(42005.m2ts) 713. The disc shared directory (Shared) includes an
auxiliary data file (Japanese.otf) 714, such that the binding unit
of the local storage 1 is generated.
[0111] The name mapping information of the binding unit manifest
files of the local storage 1 according to the present invention
includes specific information indicative of names and locations of
the binding unit files in the virtual package. For example,
according to the name mapping information of the binding unit
manifest files, the playlist file (42005.mpls) 711 contained in the
binding unit is replaced with the playlist file (00000.mpls) 741
contained in the playlist directory (PLAYLIST) of the virtual
package, the clip-info file (42005.clpi) 712 is replaced with the
clip-info file (02000.clpi) 743 of the clip-info directory
(CLIPINF) of the virtual package, the stream file (42005.m2ts) 713
is replaced with the stream file (02000.m2ts) 745 of the stream
directory (STREAM) of the virtual package, and the auxiliary data
file (Japanese.otf) 714 is replaced with the auxiliary data file
(11111.otf) 747 of the AUXDATA directory of the virtual package.
The aforementioned name mapping information includes list
information of files associated with file locations.
[0112] The newly-downloaded-updated binding unit associated with
the loaded disc (e.g., disc_ID #1) or the local storage 2's binding
unit 72, which is pre-downloaded and stored in the local storage,
includes a disc specific directory (disc_ID #1) and a disc Shared
directory (Shared) under the specific CP directory (e.g., an org_ID
#1).
[0113] The new-trailer directory indicative of a lower directory of
the disc specific directory (disc_ID #1) includes a specific
playlist file (32005.mpls) 721, a clip-info file (32005.clpi) 722
managed by the playlist file (32005.mpls) 721, and a stream file
(32005.m2ts) 723. The disc shared directory (Shared) includes an
auxiliary data file (Chinese.otf) 724, such that the binding unit
of the local storage 2 is generated.
[0114] The name mapping information of the binding unit manifest
files of the local storage 2 according to the present invention
includes specific information indicative of names and locations of
the binding unit files in the virtual package. For example,
according to the name mapping information of the binding unit
manifest files, the playlist file (32005.mpls) 721 contained in the
binding unit is replaced with the playlist file (00000.mpls) 741
contained in the playlist directory (PLAYLIST) of the virtual
package, the clip-info file (32005.clpi) 722 is replaced with the
clip-info file (02000.clpi) 743 of the clip-info directory
(CLIPINF) of the virtual package, the stream file (32005.m2ts) 723
is replaced with the stream file (02000.m2ts) 745 of the stream
directory (STREAM) of the virtual package, and the auxiliary data
file (Chinese.otf) 724 is replaced with the auxiliary data file
(222221.otf) 748 of the AUXDATA directory of the virtual package.
The aforementioned name mapping information includes list
information of files associated with file locations.
[0115] Therefore, when the virtual file system (VFS) performs the
binding operation, the binding operation is executed according to
the aforementioned name mapping information recorded in the Binding
Unit Manifest Files contained in the local storage, such that the
virtual package is generated.
[0116] In this case, the file (42005.mpls) 711 contained in the
local storage 1's binding unit (Binding Unit of Local Storage 1)
and the file (32005.mpls) 721 contained in the local storage 2's
binding unit (Binding Unit of Local Storage 2) are changed to the
file (00000.mpls) 741 contained in the virtual package generated
after the binding operation. The file (42005.clpi) 712 contained in
the local storage 1's binding unit (Binding Unit of Local Storage
1) and the file (32005.clpi) 722 contained in the local storage 2's
binding unit (Binding Unit of Local Storage 2) are changed to the
file (02000.clpi) 743 contained in the virtual package generated
after the binding operation. The file (42005.m2ts) 713 contained in
the local storage 1's binding unit (Binding Unit of Local Storage
1) and the file (32005.m2ts) 723 contained in the local storage 2's
binding unit (Binding Unit of Local Storage 2) are changed to the
file (02000.m2ts) 745 contained in the virtual package generated
after the binding operation. The files of the local storage 1 has
priorities higher than those of the files of the local storage 2,
such that the virtual package files (00000.mpls:741,
02000.clpi:743, and 02000.m2ts:745) are composed of the local
storage 1's files (42005.mpls:711, 42005.clpi:712, and
42005.m2ts:713), respectively.
[0117] However, the file (Japanese.otf) 714 contained in the local
storage 1's binding unit (Binding Unit of Local Storage 1) and the
file (Chinese.otf) 724 contained in the local storage 2's binding
unit (Binding Unit of Local Storage 2) are different respectively.
Therefore, the file (Japanese.otf) 714 contained in the local
storage 1's binding unit located under the AUXDATA directory of the
virtual package 74 generated after the binding operation is
composed of the auxiliary data file (11111.otf) 747, and the file
(Chinese.otf) 724 contained in the local storage 2's binding unit
located under the AUXDATA directory of the virtual package 74
generated after the binding operation is composed of the auxiliary
data file (22222.otf) 748.
[0118] Therefore, the virtual package 74 generated by the name
mapping information includes a BD directory acting as a lower
directory of a root directory. The BD directory includes an index
file (index.bdmv) and an object file (MovieObject.bdmv) according
to the virtual package. The BD directory includes a playlist
directory (PLAYLIST), a clip-info directory (CLIPIF), a stream
directory (STREAM), and an auxiliary data directory (AUXDATA). The
playlist directory (PLAYLIST) includes a playlist file (00000.mpls)
741 acting as a substitute for the playlist file (42005.mpls) 711
of the local storage 1's binding unit 71. The clip-info directory
(CLIPINF) appends a clip-info file (02000.clpi) 743 acting as a
substitute for the clip-info file (42005.clpi) 712 of the local
storage 1's binding unit 71 to the clip-info file (01000.clpi) 742
of the disc package. The stream directory (STREAM) appends a stream
file (02000.m2ts) 745 acting as a substitute for the stream file
(42005.m2ts) 713 of the local storage 1's binding unit 71 to the
stream file (01000.m2ts) 744 of the disc package. The auxiliary
data directory (AUXDATA) appends both an auxiliary data file
(11111.otf) 747 acting as a substitute for the auxiliary data file
(Japanese.otf) 714 of the local storage 1's binding unit 71 and an
auxiliary data file (22222.otf) 748 acting as a substitute for the
auxiliary data file (Chinese.otf) 724 of the local storage 2's
binding unit 72 to the auxiliary data file (sound.bdmv) 746 of the
disc package.
[0119] In association with the above-mentioned description, the
index file (Index.bdmv) and the object file (MovieObject.bdmv),
which act as upper files of the virtual package, may be updated in
conventional index and object files (Index.bdmv and
MovieObject.bdmv) contained in the disc on the basis of the
newly-generated virtual playlist file (00000.mpls) 741.
Specifically, if a title is changed to another title by the
playlist file (00000.mpls) 741 contained in the virtual package
(e.g., if a new title is added, a conventional title is deleted, or
a title reproduction scenario is changed to another scenario), the
aforementioned index and object files may be updated on the basis
of the newly- generated virtual package.
[0120] A method for reproducing original data indicative of the
recording medium data and additional data indicative of the local
storage data according to the aforementioned virtual package 74
will hereinafter be described with reference to FIG. 8.
[0121] FIG. 8 is a flow chart illustrating a method for reproducing
data from a recording medium using a local storage according to the
present invention. Specifically, if there are a plurality of local
storages, a method for reproducing data of the recording medium and
data of the local storages is shown in FIG. 8.
[0122] Referring to FIG. 8, if the disc is loaded in the optical
recording/reproducing device, the optical recording/reproducing
device recognizes disc ID (disc_ID) information at step S801 in
data of the local storages.
[0123] The optical recording/reproducing device determines whether
the binding unit of the same disc ID (disc_ID) exists in the
aforementioned local storages at step S802. In this case, at least
a single binding unit of the same disc ID (disc_ID) may be
contained in the local storages, or there is no binding unit of the
same disc ID (disc_ID) in the local storages as necessary.
[0124] If it is determined that there is no binding unit of the
same disc ID (disc_ID) in the local storages, the optical
recording/reproducing device reproduces data of a disc package
indicative of the recording medium at step 803.
[0125] If it is determined the binding unit of the same disc ID
(disc_ID) exists in the local storages, the optical
recording/reproducing device determines whether the same file
exists in the binding units having the same disc ID (disc_ID) at
step S804.
[0126] If it is determined that the same file is not contained in
the binding units having the same disc ID (disc_ID), all files
different from each other are selected during the binding operation
for generating the virtual package, such that the virtual package
is generated at step S805.
[0127] If it is determined that the same file exists in the binding
units having the same disc ID (disc_ID) at step 804, a file having
a higher binding priority is selected during the binding operation
for generating the virtual package at step S806, such that the
virtual package file is generated.
[0128] Preferably, the aforementioned binding operation may be
simultaneously applied to the binding unit contained in the local
storages and the disc package. Preferably, the binding operation
may be performed on the condition that the optical
recording/reproducing device is not connected to a network such as
the Internet.
[0129] In association with the above-mentioned description, the
binding priority may be established between a plurality of local
storages. Preferably, the controller may establish the binding
priority. In association with the binding priority contained in the
local storage, the file of the Disc Specific Area Binding Unit has
a binding priority higher than that of the Shared Area Binding
Unit.
[0130] Preferably, the binding priority between the file of the
local storage binding unit and the file of the recording medium
(i.e., the disc package) may be determined in the order of the
local storage binding unit file.fwdarw.the disc package file. In
other words, the local storage binding unit file has a binding
priority higher than that of the disc package file.
[0131] The term "The same file" or "Different files" at steps
S805.about.S806 indicates whether files acquired after the virtual
package is generated according to the name mapping information are
equal to or different from each other. For example, if the term
"The same file" is determined, file names of two files are equal to
each other, so that the two files may also be equal to each
other.
[0132] The virtual package is generated by files selected at the
above steps S805.about.S806, and original data of the disc acting
as a recording medium and additional data of the local storage are
reproduced according to the aforementioned virtual package at step
S807.
[0133] As apparent from the above description, a method and
apparatus for reproducing data from a recording medium using a
local storage according to the present invention can effectively
reproduce original data recorded in a recording medium and
additional data downloaded/recorded in a plurality of local
storages, resulting in the creation of more convenient functions
for a user.
[0134] It will be apparent to those skilled in the art that various
modifications and variations can be made in the present invention
without departing from the spirit or scope of the inventions. Thus,
it is intended that the present invention covers the modifications
and variations of this invention provided they come within the
scope of the appended claims and their equivalents.
* * * * *