U.S. patent application number 12/020613 was filed with the patent office on 2008-05-22 for information storage medium and method of recording/reproducing the same.
This patent application is currently assigned to Samsung Electronics Co., Ltd.. Invention is credited to Kiu-hae JUNG, Kyung-geun Lee, Jae-seong Shim.
Application Number | 20080117747 12/020613 |
Document ID | / |
Family ID | 36142203 |
Filed Date | 2008-05-22 |
United States Patent
Application |
20080117747 |
Kind Code |
A1 |
JUNG; Kiu-hae ; et
al. |
May 22, 2008 |
INFORMATION STORAGE MEDIUM AND METHOD OF RECORDING/REPRODUCING THE
SAME
Abstract
An information storage medium has user data areas and additional
data areas, and sync patterns to distinguish the additional data
areas from the user data areas. The information storage medium
includes a user data area in which user data is recorded and an
additional data area located in at least one of areas before and
after the user data area. Second sync patterns used in the
additional data area are different from first sync patterns used in
the user data area.
Inventors: |
JUNG; Kiu-hae; (Gyeonggi-do,
KR) ; Shim; Jae-seong; (Seoul, KR) ; Lee;
Kyung-geun; (Gyeonggi-do, KR) |
Correspondence
Address: |
STEIN, MCEWEN & BUI, LLP
1400 EYE STREET, NW
SUITE 300
WASHINGTON
DC
20005
US
|
Assignee: |
Samsung Electronics Co.,
Ltd.
Suwon-city
KR
|
Family ID: |
36142203 |
Appl. No.: |
12/020613 |
Filed: |
January 28, 2008 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
11600032 |
Nov 16, 2006 |
|
|
|
12020613 |
Jan 28, 2008 |
|
|
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10673402 |
Sep 30, 2003 |
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11600032 |
Nov 16, 2006 |
|
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Current U.S.
Class: |
369/44.39 |
Current CPC
Class: |
G11B 2220/2541 20130101;
G11B 2020/1287 20130101; G11B 20/10009 20130101; G11B 2220/2537
20130101; G11B 7/004 20130101; G11B 2220/216 20130101; G11B
2020/1288 20130101; G11B 7/0053 20130101; G11B 2220/2545 20130101;
G11B 27/3027 20130101; G11B 2220/215 20130101; G11B 20/1217
20130101; G11B 7/00736 20130101; G11B 2220/218 20130101 |
Class at
Publication: |
369/044.39 |
International
Class: |
G11B 7/00 20060101
G11B007/00 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 10, 2002 |
KR |
2002-78167 |
Claims
1. An information storage medium for use with a recording and/or
reproducing apparatus, the information storage medium comprising: a
plurality of data areas each comprising a plurality of sub data
areas, each of the sub data areas comprising a corresponding sync
pattern; and an additional data area located between two of the
data areas and comprising: a first sub additional data area
comprising a first sync pattern; and a second sub additional data
area comprising a second sync pattern; wherein: the first sync
pattern is different from the second sync pattern; the first sync
pattern and the second sync pattern enable the apparatus to
distinguish the additional data area from the data areas when the
information storage medium is used with the apparatus; and a size
of the additional data area is an integer multiple of a size of one
of the sub data areas.
2. The information storage medium of claim 1, wherein the
additional data area provides compatibility among information
storage media having different formats for use with the
apparatus.
3. A reproducing apparatus for use with an information storage
medium, the information storage medium comprising a plurality of
data areas each comprising a plurality of sub data areas, each of
the sub data areas comprising a corresponding sync pattern; and an
additional data area located between two of the data areas and
comprising a first sub additional data area comprising a first sync
pattern, and a second sub additional data area comprising a second
sync pattern; wherein the first sync pattern is different from the
second sync pattern; the first sync pattern and the second sync
pattern enable the apparatus to distinguish the additional data
area from the data areas when the information storage medium is
used with the apparatus; and a size of the additional data area is
an integer multiple of a size of one of the sub data areas; the
apparatus comprising: a pickup to emit light onto the information
storage medium; and a controller to control the pickup to reproduce
data recorded in the data areas.
4. The reproducing apparatus of claim 3, wherein the additional
data area provides compatibility among information storage media
having different formats for use with the apparatus.
5. A method of reproducing information from an information storage
medium, the information storage medium comprising a plurality of
data areas each comprising a plurality of sub data areas, each of
the sub data areas comprising a corresponding sync pattern; and an
additional data area located between two of the data areas and
comprising a first sub additional data area comprising a first sync
pattern, and a second sub additional data area comprising a second
sync pattern; wherein the first sync pattern is different from the
second sync pattern; the first sync pattern and the second sync
pattern enable the additional data area to be distinguished from
the data areas; and a size of the additional data area is an
integer multiple of a size of one of the sub data areas; the method
comprising: reproducing the first sync pattern and/or the second
sync pattern; and reproducing data recorded in the data areas.
6. The method of claim 5, wherein the additional data area provides
compatibility among information storage media having different
formats.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of application Ser. No.
11/600,032 filed on Nov. 16, 2006, which is a continuation of
application Ser. No. 10/673,402 filed on Sep. 30, 2003, and claims
the benefit of Korean Patent Application No. 2002-78167 filed on
Dec. 10, 2002, in the Korean Intellectual Property Office, the
disclosures of which are incorporated herein by reference in their
entirety.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to an information storage
medium having user data areas and additional data areas and a
method of reproducing information recorded on the information
storage medium, and more particularly, to an information storage
medium having an improved structure in which user data areas are
distinguished from additional data areas and a method of recording
information thereon and/or reproducing information from the
information storage medium.
[0004] 2. Description of the Related Art
[0005] Optical discs are generally used as information storage
media of optical pickup devices which record information on and/or
reproduce information from the optical discs without contacting the
optical discs. Optical discs are classified as either compact discs
(CDs) or digital versatile discs (DVDs) according to their
information recording capacity. Optical discs can also be
classified as either recordable discs or read-only discs according
to their recording potential. Here, the recordable discs include
650 MB CD-Rs, CD-RWs, 4.7 GB DVD+R/RWs, DVD-random access memories
(DVD-RAMs), DVD-R/RWs, and so forth. The read-only discs include
650 MB CDs, 4.7 GB DVD-ROMs, and the like.
[0006] FIG. 1 illustrates the data structure of a recordable
information storage medium such as a CD-R or a CD-RW. Referring to
FIG. 1, the recordable information storage medium includes user
data areas A and additional data areas B located before and after
the user data areas A. Here, the user data areas A are physical
clusters in which data is recorded. The additional data areas B are
divided into run-in areas and run-out areas.
[0007] The additional data areas B serve as spare areas in which
data can be recorded even when a recording position of the
information storage medium is changed with a variation in the speed
of a spindle motor during rotating of the information storage
medium on a turntable.
[0008] In a case where a read-only information storage medium is
manufactured according to the above-described format, the read-only
information storage medium is required to have the same structure
as the recordable information storage medium so as to have
reproduction compatibility in a drive and a format consistent with
the recordable information storage medium. In other words, the
read-only information storage medium has a structure including user
data areas A and additional data areas B. Here, the additional data
areas B are located before and after the user data areas A and must
have the same length as the run-in areas and the run-out areas
described with reference to FIG. 1. In this case, the additional
data areas B have to be separated from the user data areas A.
SUMMARY OF THE INVENTION
[0009] Additional aspects 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.
[0010] The present invention provides an information storage medium
having user data areas and additional data areas, and sync patterns
to distinguish the additional data areas from the user data areas,
and a method of recording information on and/or reproducing
information from the same.
[0011] According to an aspect of the present invention, an
information storage medium includes a user data area in which user
data is recorded and an additional data area located in at least
one of areas before and after the user data area, where second sync
patterns used in the additional data area are different from first
sync patterns used in the user data area.
[0012] According to another aspect of the present invention, a
method of recording information on and/or reproducing information
from an information storage medium includes preparing user data
area in which user data is recorded and an additional data area
located in at least one of areas before and after the user data
area, where second sync patterns used in the additional data area
are formed differently from first sync patterns used in the user
data area.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] These and/or other aspects and advantages of the invention
will become apparent and more readily appreciated from the
following description of the embodiments taken in conjunction with
the accompanying drawings in which:
[0014] FIG. 1 illustrates the data structure of a conventional
recordable information storage medium such as a CD-R or a
CD-RW;
[0015] FIG. 2 illustrates the data structure of a recording unit of
an information storage medium according to an embodiment of the
present invention;
[0016] FIG. 3 illustrates the data structure of the information
storage medium; and
[0017] FIG. 4 is a block diagram of a recording and/or reproducing
apparatus according to an embodiment of the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] Reference will now be made in detail to the present
embodiments of the present invention, examples of which are
illustrated in the accompanying drawings, wherein like reference
numerals refer to the like elements throughout. The embodiments are
described below in order to explain the present invention by
referring to the figures.
[0019] Referring to FIGS. 2 and 3, an information storage medium
according to an embodiment of the present invention includes user
data areas C in which user data is recorded and additional data
areas D located before and/or after the user data areas C. The
information storage medium may be a recordable information storage
medium or a read-only information storage medium.
[0020] Each of the user data areas C contains a plurality of user
data 11 separated by a plurality of first sync patterns 13.
According to an aspect of the invention, the user data areas C
include error correcting code (ECC) recording units.
[0021] Each of the additional data areas D contains a plurality of
additional data 21 separated by a plurality of second sync patterns
23. Here, as will be explained later, the first sync patterns 13
have modulation codes corresponding to sync numbers shown in Tables
1 and 2 and are formed by combining predetermined selected sync
numbers. The second sync patterns 23 are formed of predetermined
type of patterns denoted by reference numerals 23a and 23b
according to the same method as the plurality of first sync
patterns 13.
[0022] According to an aspect of the invention, the second sync
patterns 23 are different from the first sync patterns 13. In other
words, the second sync patterns 23 are formed of patterns which are
not used as the first sync patterns 13. By forming the second sync
patterns 23 to be different from the first sync patterns 13, a
reproducing system such as that shown in FIG. 4 can manage the
additional data areas D by being able to differentiate the
additional data areas D, with certainty, from the user data areas
C.
[0023] The number of second sync patterns 23 depends on the length
of the additional data areas D. It is preferable, but not required,
that the second sync patterns 23 are arranged at equal intervals in
order to increase an effective additional data efficiency of the
additional data areas D. In addition, sync data can be easily
restored during reproducing.
[0024] While not required, according to an aspect of the invention,
the size of each of the plurality of user data 11 in the user data
areas C is equal to a size of each of the plurality of additional
data 21 in the additional data areas D. This structure can be
realized by adjusting the positions of the second sync patterns
23.
[0025] It is preferable, but not required, that the entire size of
additional data 21 in the additional data areas D be integer
multiples of the size d1 of user data 11 recorded between two
adjacent first sync patterns 13a and 13b. In other words, referring
to FIG. 2, the size d2 of additional data 21 recorded between two
adjacent second sync patterns 23a and 23b is equal to the size d1
of the user data 11 recorded between first sync patterns 13a, 13b,
and the additional data 21 are recorded in two parts of each of the
additional data areas D. Thus, the total size of the additional
data 21 is an integer multiple of (i.e., is twice the size of) the
size d1 of the user data 11. As a result, since sync signals are
detected at regular intervals in all areas during reproducing of
data, it is advantageous to restore the sync signals.
[0026] The structure of the information storage medium using a
run-length-limited (RLL) (d, k) code will be described below. The
RLL code indicates how many bits of value "0" exist between two
bits of value "1". Thus, the RLL (d, k) code represents that the
minimum number d and the maximum number k of bits of value "0"
between two bits of value "1", respectively.
[0027] In the structure using the RLL (d, k) code, the first sync
patterns 13 generally include sync bodies that do not satisfy the
RLL (d, k) code and sync identifications (IDs) that satisfy the RLL
(d, k) code. In other words, the sync bodies have a run length k
+i, where i is an integer that is greater than or equal to "1". The
sync IDs contain different patterns to distinguish N different sync
patterns.
[0028] The second sync patterns 23 include sync bodies that do not
satisfy the RLL (d, k) code and sync IDs that satisfy the RLL (d,
k) code. The sync IDs contain different patterns to distinguish N
different sync patterns.
[0029] FIG. 3 illustrates an embodiment of the data structure of an
information storage medium including additional data areas D each
having two additional data frames. Sync bodies and sync IDs of the
information storage medium having the above data structure are
shown in Tables 1 and 2 below.
[0030] As can be seen in Table 1, a RLL (1,7) code is used. Each
sync body has 18 bits, and each sync ID has 6 bits. The user data
area C includes 9 user data frames for sync data, and the
additional data area D includes two user data frames for sync data.
TABLE-US-00001 TABLE 1 Sync 6-Bit No. 18-Bit Sync Body Sync ID
Remark 0 001 001 010 000 000 010 000 0001 User Data Area 1 001 001
010 000 000 010 010 010 Sync Data 2 001 001 010 000 000 010 101 000
3 001 001 010 000 000 010 100 001 4 001 001 010 000 000 010 000 100
5 001 001 010 000 000 010 001 001 6 001 001 010 000 000 010 010 101
7 001 001 010 000 000 010 010 000 8 001 001 010 000 000 010 101 010
9 001 001 010 000 000 010 100 101 Additional Data Area 10 001 001
010 000 000 010 101 001 Sync Data
[0031] As can be seen in Table 2, a RLL (2,10) code is used. Each
sync body has 22 bits, and each sync ID has 10 bits. The user data
area C includes 7 user data frames for sync data, and the
additional data area D includes 2 user data frames for sync data.
TABLE-US-00002 TABLE 2 Sync No. 22-Bit Sync Body 10-Bit Sync ID
Remark 0 100 001 000 000 000 000 010 0 010 001 000 1 User Data Area
1 100 001 000 000 000 000 010 0 000 100 100 1 Sync Data 2 100 001
000 000 000 000 010 0 010 000 010 0 3 100 001 000 000 000 000 010 0
001 000 000 0 4 100 001 000 000 000 000 010 0 100 100 100 0 5 100
001 000 000 000 000 010 0 010 000 100 0 6 100 001 000 000 000 000
010 0 000 010 000 0 7 100 001 000 000 000 000 010 0 010 001 000 1
Additional Data Area 8 100 001 000 000 000 000 010 0 010 010 010 0
Sync Data
[0032] As shown in Tables 1 and 2, the sync data in the additional
data D area has different patterns as compared to the sync data in
the user data area C. In other words, the sync IDs of the second
sync patterns 23 have sync patterns not used as the first sync
patterns 13. Therefore, the additional data areas D can be managed
and can be distinctly differentiated from the user data areas
C.
[0033] A method of recording information on and/or reproducing
information from the information storage medium having the
above-described structure will be described. As shown in FIG. 2,
the user data areas C including basic ECC recording blocks and the
additional data areas D located before and/or after the user data
areas C are prepared in the information storage medium. Next, the
second sync patterns 23 used in the additional data areas D are
formed differently from the first sync patterns 13 used in the user
data areas C.
[0034] Here, the second sync patterns 23 are plural and arranged at
equal intervals. It is preferable, but not required, that the
second sync patterns 23 are arranged in the additional data areas D
so that the size of each of user data 11 in the user data areas C
is equal to the size of each of additional data 21 in the
additional data areas D.
[0035] Sync data in the additional data areas D contains sync
bodies having second sync patterns that do not comply with the RLL
(d, k) code and sync IDs having second sync patterns that comply
with the RLL (d, k) code. The total size of additional data 21 in
the additional data areas D is an integer multiple of the size of
user data 11 recorded between two first sync patterns 13a and
13b.
[0036] As described above, an information storage medium and a
method of recording information thereon and/or reproducing
information therefrom according to the present invention can
maintain consistency with the formats of different types of
recordable information storage media and have reproduction
compatibility in a drive.
[0037] Also, since sync patterns used in user data areas can be
formed differently from sync patterns used in additional data
areas, the additional data areas can be further efficiently
separated from the user data areas.
[0038] Furthermore, by uniformly maintaining the length of data
recorded in the user data areas and the additional data areas, sync
signals can be detected at regular intervals in all areas during
reproducing of data. Thus, it is advantageous to restore the sync
signals.
[0039] While not specifically so limited, it is understood that the
information storage medium can include the CD-Rs, CD-RWs, DVD-RWs,
DVD-RAMs, DVD+RWs, as well as next generation high definition DVDs,
such as Blu-ray discs, Advanced Optical Discs (AODs) and other
optical storage media not listed above and/or to be developed.
[0040] FIG. 4 is a block diagram of a recording and/or reproducing
apparatus according to an embodiment of the present invention.
Referring to FIG. 4, the recording and/or reproducing apparatus
includes a recording/reading unit 1001, a controller 1002, and a
memory 1003. The recording/reading unit 1001 records data on a disc
1000, which is an embodiment of an information storage medium of
the present invention, and reads the data from the disc 1000. The
controller 1002 records and reproduces the user data 11 and the
additional data 21 according to the present invention as set forth
above in relation to FIGS. 2 and 3.
[0041] While not required in all aspects, it is understood that the
controller 1002 can be a computer implementing the method using a
computer program encoded on a computer readable medium. The
computer can be implemented as a chip having firmware, or can be a
general or special purpose computer programmable to perform the
method.
[0042] In addition, it is understood that, in order to achieve a
recording capacity of several dozen gigabytes, the
recording/reading unit 1001 could include a low wavelength, high
numerical aperture type unit usable to record dozens of gigabytes
of data on the disc 1000. Examples of such units include, but are
not limited to, those units using light wavelengths of 405 nm and
having numerical apertures of 0.85, those units compatible with
Blu-ray discs, and/or those units compatible with Advanced Optical
Discs (AODs).
[0043] While the present invention has been particularly shown and
described with reference to exemplary embodiments thereof, it will
be understood by those of ordinary skill in the art that various
changes in form and details may be made therein without departing
from the spirit and scope of the present invention as defined by
the following claims and equivalents thereof.
* * * * *