U.S. patent application number 12/028287 was filed with the patent office on 2008-05-29 for apparatus for recording and/or playing back catalog information.
This patent application is currently assigned to Samsung Electronics Co., Ltd.. Invention is credited to Jae-hoon Heo, Jung-kwon Heo, Jung-seuk Kang, Jung-wan KO.
Application Number | 20080124048 12/028287 |
Document ID | / |
Family ID | 26633502 |
Filed Date | 2008-05-29 |
United States Patent
Application |
20080124048 |
Kind Code |
A1 |
KO; Jung-wan ; et
al. |
May 29, 2008 |
APPARATUS FOR RECORDING AND/OR PLAYING BACK CATALOG INFORMATION
Abstract
A storage medium which stores catalog information and a catalog
information recording and/or playback apparatus and method
therefor. Using the method, catalog information including a still
picture and additional information together with audio data are
recorded on a storage medium such as a digital versatile disk
(DVD), which is an optical record storage medium, and the catalog
information is played back during playback of the audio data, to
thereby provide various information on the audio data. Also, the
apparatus includes a buffer memory for catalog playback which
maintains a predetermined standard and compatibility, and is
capable of real-time reading during playback of the audio data, and
automatically plays back the catalog content, corresponding to the
playback state of the audio data, when there is no additional
selection of a user.
Inventors: |
KO; Jung-wan; (Yongin-city,
KR) ; Heo; Jung-kwon; (Seoul, KR) ; Heo;
Jae-hoon; (Suwon-city, KR) ; Kang; Jung-seuk;
(Seoul, KR) |
Correspondence
Address: |
STEIN, MCEWEN & BUI, LLP
1400 EYE STREET, NW, SUITE 300
WASHINGTON
DC
20005
US
|
Assignee: |
Samsung Electronics Co.,
Ltd.
Suwon-si
KR
|
Family ID: |
26633502 |
Appl. No.: |
12/028287 |
Filed: |
February 8, 2008 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10625735 |
Jul 24, 2003 |
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12028287 |
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09583876 |
May 31, 2000 |
6687455 |
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10625735 |
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09263816 |
Mar 8, 1999 |
6741800 |
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09583876 |
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Current U.S.
Class: |
386/239 ;
386/248; 386/334; 386/E5.064; 386/E9.036; 386/E9.052 |
Current CPC
Class: |
C08L 67/025 20130101;
G11B 2220/211 20130101; H04N 5/85 20130101; G11B 20/1217 20130101;
H04N 9/8063 20130101; G11B 19/02 20130101; G11B 2220/2562 20130101;
G11B 2020/10944 20130101; H04N 9/8042 20130101; G11B 20/10527
20130101; G11B 27/322 20130101; H04N 9/877 20130101; G11B 27/329
20130101; G11B 20/12 20130101; H04N 9/8205 20130101; H04N 5/9261
20130101; G11B 20/10 20130101; G11B 27/105 20130101; G11B
2020/10546 20130101; G11B 19/022 20130101; G11B 2020/1062
20130101 |
Class at
Publication: |
386/96 ; 386/125;
386/E09.036; 386/E09.052 |
International
Class: |
H04N 5/91 20060101
H04N005/91; H04N 5/00 20060101 H04N005/00 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 6, 1998 |
KR |
98-7525 |
Claims
1. A computer readable storage medium comprising: a first region to
store catalog information that is buffered by a reproducing
apparatus; a second region different from the first information to
store audio data and catalog playback information; wherein the
catalog playback information instructs the reproducing apparatus to
connect the audio data and the catalog information to each other
during playback of the audio data by the reproducing apparatus, and
the catalog information is buffered by the reproducing apparatus
prior to reading the audio data and the catalog playback
information.
2. The computer readable storage medium of claim 1, further
comprising: an audio region including an audio data recording
region in which the audio data is recorded.
3. The computer readable storage medium of claim 1, further
comprising: an audio data recording region in which the audio data
is recorded; and an image information region in which the catalog
information is recorded.
4. The computer readable storage medium of claim 1, wherein the
catalog information includes common catalog data for information
commonly applied for the entire audio data recorded on the computer
readable storage medium and title catalog data having information
corresponding to each distinct item of the audio data.
5. The computer readable storage medium of claim 4, wherein the
catalog playback information further includes a file identifier and
an auto presentation information table determining a location of
the catalog information to be played back corresponding to a
predetermined time in accordance with real-time playback
information of audio obtained from the audio data during real-time
playing back.
6. The computer readable storage medium of claim 5, wherein the
catalog information includes common catalog information which the
reproducing apparatus reads according to a predetermined sequence
stored in the auto presentation information table.
7. The computer readable storage medium of claim 1, wherein: the
catalog information includes a still picture for a background
image, a sub-picture for a caption, and navigation information for
controlling the reproduction of the still picture and the
sub-picture by the reproducing apparatus.
8. The computer readable storage medium of claim 7, wherein the
catalog playback information includes information on a location of
an image information region on the storage medium in which the
still picture, sub-picture and navigation information are
recorded.
9. The computer readable storage medium of claim 8, wherein the
catalog playback information further comprises: a file identifier;
and an auto presentation information table determining a location
of the catalog information to be played back corresponding to a
predetermined time in accordance with real-time playback
information of audio obtained from the audio data during real-time
playing back.
10. The computer readable storage medium of claim 9, wherein the
auto presentation information table comprises a predetermined
sequence in which the reproducing apparatus reads the still picture
and the sub-picture from a buffer.
11. The computer readable storage medium of claim 1, wherein: the
catalog playback information comprises an auto presentation
information table determining the catalog information to be played
back corresponding to a predetermined time in accordance with the
catalog playback information obtained from the audio data.
12. The computer readable storage medium of claim 11, wherein the
catalog playback information comprises a file identifier and the
auto presentation information table determines a location of the
catalog information to be played back corresponding to a
predetermined time in accordance with real-time playback
information of audio obtained from the audio data during realtime
playing back.
13. The computer readable storage medium of 12, wherein the auto
presentation information table comprises a predetermined sequence
in which a reproducing apparatus reads the catalog information from
a buffer.
14. A computer readable storage medium comprising: a first region
including a plurality of audio titles to be reproduced by a
reproducing apparatus and catalog playback information; a second
region different from the first region, including catalog
information comprising a plurality of program chains, one of the
program chains corresponding to a common catalog for the first
region and the other program chains corresponding to each of the
plurality of audio titles recorded in the first region; wherein
each of the program chains includes still picture and/or video data
and navigation information that, when executed by the reproducing
apparatus, controls the display of the still picture and/or video
data, the catalog playback information instructs the apparatus to
read the catalog information as the apparatus reads the audio data,
and the apparatus buffers the catalog information prior to reading
the audio data and the catalog playback information.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 10/625,735, filed on Jul. 24, 2003, now
pending, which is a divisional of U.S. patent application Ser. No.
09/583,876, filed May 31, 2000, now U.S. Pat. No. 6,687,455, which
is a continuation-in-part of U.S. patent application Ser. No.
09/263,816, filed Mar. 8, 1999, now U.S. Pat. No. 6,741,800, which
claims the benefit of Korean Application No. 98-7525, filed Mar. 6,
1998, in the Korean Patent Office, the disclosure of which is
incorporated herein by reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to a field of optical
recording and/or playback, and more particularly, to a storage
medium storing audio data and catalog information related to the
audio data and an apparatus and method for recording and/or playing
back catalog information.
[0004] 2. Description of the Related Art
[0005] In an optical recording and/or playback apparatus in which a
digital versatile disk (DVD) is used as a storage medium, a catalog
function, and an apparatus or method for performing the catalog
function has not been proposed.
[0006] Here, the contents of the audio include the record contents,
the composer, the artist and/or performer, etc. Particularly, the
catalog is additional data for illustrating the contents of the
audio which is main data recorded on the storage medium, including
such additional information as still pictures and captions as video
information.
[0007] The catalog information which is played back in a playback
apparatus having a video decoder, preferably, has an inspecting
function for reading the desired contents of the catalog, without
interfering with the playback of the audio.
[0008] It is also preferable that the catalog information can be
easily manufactured using an established editing system for
DVD-Video.
[0009] In order to satisfy the above-described conditions, two
types of information, i.e., audio and catalog data, which perform
different functions in a storage medium must be simultaneously
played back. Thus, even when the audio data is played back at the
maximum transmission speed of the playback apparatus, a
predetermined amount of the catalog information must have already
been played back and stored in a temporary storage, so that both
the audio and the catalog contents can be simultaneously played
back.
[0010] That is, when the storage medium, in which information for
forming the catalog is stored, is inserted into a driver, a player
or an editor, the catalog information stored in the storage medium
is read and stored in a temporary storage, i.e., a memory, to be
output in the form of an image if necessary. Here, in order to
store the catalog information read from the storage medium, in the
memory, the image size must be defined, and further a method for
effectively using the memory must be provided.
[0011] It is also preferable that navigation information, which has
been proposed in the DVD-Video, i.e., search information added to
the catalog information such that a user can search an arbitrary
catalog page, and a specification for processing the search
information be provided. Further, an editing system manufacturing a
catalog corresponding to the specification shares with an editing
system according to the DVD-Video specification.
[0012] Here, the DVD-Read Only Memory (ROM) is a record medium
defined by the physical specification of Part 1 of a DVD
specification for a read-only disk produced by Toshiba Corporation
and other companies (the DVD forum) in August, 1996 and the file
system specification of Part 2 thereof. Also, the DVD-video means
video edited by an image information recording method defined by
the video specification of Part 3 thereof or a DVD-ROM disk in
which the video is recorded.
SUMMARY OF THE INVENTION
[0013] It is an object of the present invention to provide a
storage medium for storing catalog information to satisfy the
above-described conditions.
[0014] It is another object of the present invention to provide a
playback apparatus and method for reading desired catalog contents
from catalog information related to audio data, while the audio
data stored in a DVD disk is played back.
[0015] It is another object of the present invention to provide a
recording apparatus and method for writing catalog information
related to audio data and catalog contents in a DVD disk.
[0016] It is still another object of the present invention to
provide an apparatus and method for automatically accessing the
location of the catalog using real-time playback information
extracted from audio data to be played back without a command to
read the catalog in a predetermined location, while audio data
stored in a DVD disk is played back.
[0017] Additional objects and 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.
[0018] Accordingly, to achieve the above and other objects of the
present invention, there is provided a storage medium randomly
accessible and storing audio data and catalog information which is
related to the audio data and stored in a predetermined region of
the storage medium.
[0019] According to a first aspect of the invention, a catalog
information playback apparatus includes storing means storing audio
data and catalog information from the storage medium in which audio
data, catalog information formed of information related to the
audio data, and catalog playback information connecting the audio
data and the catalog information to each other during playback are
stored, a video decoder providing an image restored by decoding the
catalog information and additional information, an audio decoder
providing audio signals restored by decoding the audio data, and a
controller controlling playback of catalog information
corresponding to a selection of a user and the catalog playback
information.
[0020] According to a second aspect of the invention, a method for
playing back data recorded on the storage medium storing audio
data, catalog information related to the audio data, and catalog
playback information connecting the audio data and the catalog
information to each other during playback includes playing back the
catalog information corresponding to the catalog playback
information; and playing back the audio data corresponding to the
played back catalog information.
[0021] According to a third aspect of the invention, a method of
recording data on a storage medium, includes encoding audio data,
catalog information related to the audio data, and catalog playback
information connecting the audio data and the catalog information
to each other during playback, and recording the encoded audio
data, the encoded catalog information and the encoded catalog
playback information on the storage medium.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The above objectives and advantages of the present invention
will become more apparent by describing in detail a preferred
embodiment thereof with reference to the attached drawings, in
which:
[0023] FIG. 1 shows a digital versatile disk (DVD)-read only memory
(ROM) structure of one dimension according to an example of a
storage medium storing catalog information according to an
embodiment of the present invention;
[0024] FIG. 2 is an example of a table showing catalog playback
information for playing back catalog information according to the
embodiment of the present invention;
[0025] FIG. 3 is a block diagram of a playback apparatus for
playing back catalog information according to the present
invention; and
[0026] FIG. 4 is a block diagram of a recording/reproducing
apparatus for implementing the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
[0027] Reference will now made in detail to the present preferred
embodiment of the present invention, examples of which are
illustrated in the accompanying drawings, wherein like reference
numerals refer to the like elements throughout. The embodiment is
described below in order to explain the present invention by
referring to the figures.
[0028] Referring to FIG. 1, the storage space of an entire DVD
medium (DVD-ROM) is a volume space 100, which includes a volume and
file system region 110 having information on the volume and
recorded file structure, an image information region 120 for
recording image data, an audio region 130 for recording audio data
and an other file region 140.
[0029] The above data regions may have no information in the image
information region 120, and the catalog information related to each
item of music may exist in a predetermined area of the audio region
130, and the other file region 140 may or may not exist.
[0030] Also, the image information region 120 and the audio region
130 may include a catalog management (CMG) region 121 and an audio
management (AMG) region 131 having management information on the
recorded images and audio, respectively, and a catalog title set
(CTS1) 122 and audio title sets (ATS) 132 to 134, which are files
in which the image and audio data are recorded. The CTS1 122
includes a plurality of program chains (CPGC) 125 to 128. Here, the
CPGC indicates a set of related data. The CTS1 file for the catalog
may have information on still pictures formed of a plurality of
catalogs and sub-pictures, and navigation information for
controlling the information on the still pictures and the
sub-pictures. As shown in FIG. 1, all image information related to
the audio region 130 is stored in the CTS1 122, so that the image
information region 120 may include only the CMG 121 and the CTS1
122.
[0031] Here, the structure of the information on the still picture
and sub-picture, and the navigation, and the rules thereof are
shown in the DVD-video specification.
[0032] Also, the catalog information can be effectively used by
dividing the catalog information into one common catalog CPGC1 125
for the entire audio region and a plurality of title catalogs
CPGC2, CPGC3, . . . , CPGCn+1 126, 127, 128 corresponding to each
audio title recorded in the audio region 130. That is, a first
audio title set (ATS1), i.e., the title catalog related to a first
item of music (such as a song) is stored in the CPGC2, and a second
title set (ATS2), i.e., the title catalog related to a second item
of music is stored in the CPGC3, and thus the nth audio title set
(ATSn), i.e., the title catalog related to the nth audio title set
(ATSn) is stored in CPGCn+1. The common catalog and each title
catalog are formed in a unit of a program chain (CPGC) in the image
title.
[0033] According to the embodiment of the present invention, the
catalog playback information for connecting the CTS and ATS to each
other for playback is stored in the AMG region 131 or a
predetermined region (information region) of the audio file. The
AMG region 131 has a space for recording information on the entire
audio region and each title, and a location of the catalog
information may be additionally recorded on the AMG region 131.
[0034] In the embodiment of the present invention, the catalog
playback information which is stored in the AMG region or the audio
file region, may be stored in any location. Also, when the disk
begins to be read, an appropriate means distinguishes whether or
not the catalog playback information exists. The means may define
the file names, a region of a disk predetermined by a physical or
logical address designated as a space for storing catalog playback
information, or information indicating whether existence of a file
in which the catalog playback information is stored or not and a
location of the file in the data region to be necessarily read such
as a volume information region when the disk is read.
[0035] The catalog playback information may include the location of
the image information in which the catalog is recorded, a file
identifier (ID) and an auto presentation information table in which
is stored the location of the catalog to be played back
corresponding to the predetermined time according to real-time
playback information of the audio obtained by real-time playback of
the audio.
[0036] In FIG. 2, the file ID can recognize a file in which the
catalog playback information is recorded. A catalog CPGC number
indicates the number corresponding to a common catalog and a title
catalog in the image information region in which the catalog is
recorded. A catalog pointer indicates the location on the disk of a
file or a CPGC in which the catalog is recorded.
[0037] Also, each corresponding auto presentation information table
has playback time information capable of appropriately and
automatically playing back the catalog, using the realtime playback
information obtained from the audio data while each recorded title
is played back, and information on the playback location of the
catalog, so that the auto presentation information table has
information on the still picture and the sub-picture to be played
back within catalogs when a user has not input commands while one
title is played back.
[0038] In FIG. 3, a signal read from an optical disk (DVD-ROM) 210
is demodulated and decoded to a digital signal through a DVD
playback signal processing unit 220 according to the physical
specification of the DVD-ROM, to provide the restored signal to a
buffer memory 250.
[0039] The restored digital signal is divided into audio data and
video data under the control of a system controller 240 and the
audio data of the DVD-Audio specification as an example is written
in an audio buffer 251, and video data of the DVD-Video
specification as an example, i.e., catalog data is written in a
video buffer 252. At this time, the buffer memory 250 can use one
memory space or an additional memory.
[0040] The catalog data stored in the buffer memory 250 is read in
accordance with a control signal generated by the system controller
240 and the read catalog data is restored to an image signal to be
output. At this time, the system controller 240 generates an
appropriate control signal based on control commands of a user
through a remote controller, the auto presentation information
table according to catalog playback information, real-time playback
information extracted from the audio data, and navigation
information of the catalog data, such that the catalog data stored
in the video buffer 252 to be played back is output through the
video decoder 270 as a video signal.
[0041] Meanwhile, the audio data of the DVD-Audio specification
read from the audio buffer 251 is provided to the audio decoder 260
and the provided audio data is restored to an audio signal to be
output.
[0042] Here, the video decoder 270 represents a device restoring
image data produced by the DVD-Video specification to an initial
image and information added to the image. The apparatus for playing
back the DVD-Video has already been produced and such an apparatus
is well-known to a person skilled in the art. Also, the audio
decoder 260 restores the audio data including the encoded audio
data coded by linear pulse coded modulation (linear PCM) or another
predetermined manner, management information for managing the audio
data and real-time playback information to initial audio and
additional information. The system controller 240 and a servo unit
230 control the system to appropriately operate using the control
commands from a user and various control signals obtained by
playback signals.
[0043] Subsequently, a playback operation will be described in view
of the video buffer 252 writing and reading catalog data, as shown
in FIG. 3.
[0044] The playback apparatus shown in FIG. 3 must store
information on the common catalog and the title catalog in the
video buffer 252, before a predetermined audio title is played
back. If not, desired catalog information cannot be played back
while the music is played back.
[0045] When either the common catalog or the title catalog is
selected, the sum of the two items of catalog data should be
smaller than the memory capacity of the video buffer 252 for
playing back the catalog. Referring to FIG. 1, assuming that the
CPGC1 125 is the common catalog for the entire audio region, and
the CPGC2 126 is the audio title 1, i.e., the title catalog 1
related to the first item of music, and the CPGC3 127 is the title
catalog 2 for the second item of music, and the CPGCn+1 128 is the
title catalog n for the nth item of music, the catalog information
required for playing back the music has the common catalog
information and the title catalog for the music to be played
back.
[0046] Meanwhile, the amount of buffer memory of the playback
apparatus playing back the DVD-Video is approximately 4 MB
(megabytes). This functions as a time buffer for resolving an
inconsistency between a transmission speed of data read from the
disk such as a variable buffer rate and a bit rate of audio played
back in real-time or image information.
[0047] The conventional buffer must be used to play back audio in
real-time, and an additional memory must be used to play back the
catalog. Thus, assuming that a memory of 16 MB is the entire buffer
memory 250 when one memory is used, the memory size of the video
buffer 252 for playing back the catalog is 12 MB. For instance,
when the amount of the data of the common catalog is 5 MB, the
amount of the title catalog cannot exceed 7 MB.
[0048] Also, the title catalog information for each title may not
exist. When the sum of the entire catalog data is smaller than the
predetermined memory capacity of the video buffer 252, the catalog
is not separately classified into the common catalog and the title
catalog, and the catalog information on all music can be recorded
in the common catalog.
[0049] When the optical disk 210 is played back initially, the
system controller 240 reads volume information of the optical disk
210, the file system, and information on the CMG and AMG. As
described above, the CPGC data in which the catalog information
exists is read from the video buffer 252 according to the catalog
playback information stored in the AMG region 131 or in a
predetermined file. When required catalog data is read, the audio
information is read to provide the read audio information to the
audio decoder 260 through the audio buffer 251, and the audio
information is converted into an audio signal and the converted
audio signal is output through the audio decoder 260.
[0050] Meanwhile, if a user selects the catalog, i.e., if the user
inputs commands for a desired catalog through an input unit such as
a remote controller for controlling the playback apparatus, the
predetermined catalog data stored in the video buffer 252
corresponding to the input commands are provided to the decoder
270.
[0051] If the user does not input commands for playing back the
predetermined catalog, i.e., the user does not input the commands
for a predetermined time, or the user sets an auto presentation
mode, the contents stored in the video buffer 252 are output
through the video decoder 270 to output an image of the
predetermined catalog using the information in the auto
presentation information table.
[0052] At this time, the catalog data includes still pictures for
the backgrounds and sub-pictures for transferring characters and
the still pictures and the sub-pictures are controlled using the
navigation information defined by the DVD-Video specification.
Thus, compared to the case of using only still pictures, 32
sub-pictures can be selected from the DVD-Video, which supports
multiple languages.
[0053] Also, if the still picture includes character information,
the increase in the resolution of the still picture is required for
playing back the character information to distinct pictures, so
that the compression ratio cannot be increased, and the background
image and the character information are divided, so that the
compression ratio for the background is increased, and characters
can effectively be coded using a compression method for effectively
compressing characters defined by the DVD-Video.
[0054] Further, FIG. 4 is a block diagram of a
recording/reproducing apparatus for implementing the present
invention. The function of the recording/reproducing apparatus for
recording/reproducing A/V (audio/video) data including the catalog
information using the DVD-ROM 210 is largely divided into recording
and reproduction. A description of the playback aspect of the
embodiment has already been explained above in the context of the
playback apparatus shown in FIG. 3. The DVD playback processor 220
(shown in FIG. 3) is encompassed in a digital signal processor 320,
the audio and video decoders 260, 270 (shown in FIG. 3) are
encompassed in the AV codec and/or host interface 310, the servo
unit 230 (shown in FIG. 3) is encompassed in a servo 350, and the
system controller 240 (shown in FIG. 3) is encompassed in a system
controller 360.
[0055] During recording, the A/V codec and/or a host interface 310
compression-codes an externally applied A/V signal which includes
the audio data, the catalog information, and the catalog playback
information, according to a predetermined compression scheme and
supplies size information for the compressed data. The digital
signal processor (DSP) 320 receives the compressed A/V data
supplied from the AV codec and/or the host interface 310, adds
additional data for error correction code (ECC) processing thereto,
and performs modulation using a predetermined modulation scheme. A
radio frequency amplifier (RF AMP) 330 converts the modulated data
from the DSP into a radio frequency (RF) signal. Then, a pickup 340
records the RF signal supplied from the RF AMP 330 on the DVD-ROM
210 mounted on a turn table of the pickup 340 in a manner as shown
in FIG. 1. A servo unit 350 receives information necessary for
servo control from a system controller 360 and stably performs a
servo function for the mounted disk. As a result, the volume 100,
which includes the volume and file system 120, the audio region
130, and the other file region 140 are recorded by the pickup 340
on the DVD-ROM 210.
[0056] During playback of information data stored on the disk, the
pickup 340 picks up the optical signal from the disk having the
information data, such as the audio data, the catalog information,
and the catalog playback information, stored therein, and the
information data is extracted from the optical signal. The RF AMP
330 converts the optical signal into an RF signal, and extracts the
servo signal for performing a servo function, and modulated data.
The DSP 320 demodulates the modulated data supplied from the RF AMP
330 corresponding to the modulation scheme used during modulation,
performs an ECC process to correct errors, and eliminates added
data. The servo unit 350 receives information necessary for servo
control from the RF AMP 330 and the system controller 360, and
stably performs the servo function. The AV codec and/or the host
interface 110 decodes the compressed A/V data supplied from the DSP
320 to output an A/V signal. The system controller 360 controls the
overall system for reproducing and recording the information data
from and on the disk mounted on the turn table of the pickup
340.
[0057] The system controller 360 and the DSP 320 handle processing
the data during recording and reproduction, including performing
linking schemes in connection with recording and reproducing as
well as performing linking schemes when processing defective areas
on the media during recording and reproducing.
[0058] As described above, the catalog function is realized using
the DVD-Video specification, to thereby edit the catalog for
DVD-Audio using an editing system for the DVD-Video, and the
playback apparatus for playing back the catalog of the DVD-Audio
also plays back the DVD-Video, to thereby minimize additional
circuits.
[0059] Also, according to the present invention, the predetermined
DVD-Video specification is used, so that the character information
of the catalog is not processed as the still picture but as the
sub-picture, to thereby enable multiple language display.
[0060] Although a preferred embodiment 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 this embodiment
without departing from the principles and spirit of the invention,
the scope of which is defined in the claims and their
equivalents.
* * * * *