公开(公告)号：EP1593122A4

公开(公告)日：2009-01-21

申请号：EP04703530

申请日：2004-01-20

申请人： LG ELECTRONICS INC

发明人： SUH SANG WOON ,  KIM JIN YONG

IPC分类号： G11B7/007 ,  G11B19/26

CPC分类号： G11B7/00736 ,  G11B19/12 ,  G11B19/26 ,  G11B20/1254 ,  G11B2020/1279 ,  G11B2020/1298 ,  G11B2220/213 ,  G11B2220/2541

摘要： The present invention relates to a method of enabling to reproduce main A/V data recorded on a high-density recording medium such as a Blu-ray Disc Rom at a playback speed suitable to the recorded main A/V data. In the present method, when main video data is recorded on a recording medium, playback speed information suitable to the video data is also written within a disc information table allocated in a PIC area that is located ahead of a data area including the video data. The present method is efficiently applicable to a high-density recording medium containing higher-quality video data that requires higher transfer rate than a digital TV broadcast stream that requires about 36 Mbps transfer rate.

公开(公告)号：EP1509914A4

公开(公告)日：2007-10-31

申请号：EP03757204

申请日：2003-06-04

申请人： LG ELECTRONICS INC

发明人： KIM JIN YONG ,  PARK KYUNG CHAN ,  JEONG SEONG YUN

IPC分类号： G11B11/00 ,  G11B7/24

CPC分类号： G11B7/24038

摘要： A high-density dual-layer optical disc is disclosed, comprising: a light incident surface and an opposite surface; a substrate including a transparent layer having a refractive index; a first recording layer and a second recording layer, the first recording layer being located spaced apart from the light incident surface by a first substrate thickness (t1), and the second recording layer being located between the first recording surface and the opposite surface at a second substrate thickness (t2) from the light incident surface; wherein a distance between the first recording layer and the second recording layer is set in a range of 19 ± 15 µm, and wherein the refractive index is between 1.45 and 1.70.

公开(公告)号：EP1518227A4

公开(公告)日：2006-04-05

申请号：EP03736356

申请日：2003-07-01

申请人： LG ELECTRONICS INC

发明人： KIM JIN YONG ,  SUH SANG WOON

IPC分类号： G11B7/007 ,  G11B7/24 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/30 ,  G11B19/12 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B23/28

CPC分类号： G11B20/0063 ,  G11B7/0053 ,  G11B7/00736 ,  G11B19/122 ,  G11B20/00086 ,  G11B20/1217 ,  G11B23/28 ,  G11B23/281 ,  G11B2020/1288 ,  G11B2220/2541

摘要： A high-density optical disc such as BD-ROM (Blu-ray Disc ROM) or BD-R (Blu-ray Disc Recordable) having a function for preventing unauthorized duplication of data written therein, and a method for restricting playback of illegally duplicated optical discs are disclosed. In accordance with the invention, the optical disc is additionally recorded with disc identification information, adapted to identify the kind of the optical disc, in the form of physical marks, on a particular area thereof. The method of the invention includes the steps of detecting and identifying disc identification information from an optical disc at an initial stage of a servo operation carried out by an optical disc apparatus adapted to play back the optical disc, while identifying the format of data read out from the optical disc, thereby determining whether or not the read-out data was illegally duplicated on the optical disc, and forcibly restricting a data reproduction operation of the optical disc apparatus, based on the result of the determination. Accordingly, it is possible to efficiently prevent unauthorized duplication of data, recorded on a high-density optical disc such as BD-ROM, onto BD-RE or BD-R, while efficiently preventing reproduction of the illegally duplicated data.

公开(公告)号：EP1509912A4

公开(公告)日：2005-11-09

申请号：EP03757210

申请日：2003-06-05

申请人： LG ELECTRONICS INC

发明人： KIM JIN YONG ,  SUH SANG WOON

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12

CPC分类号： G11B20/00086 ,  G11B7/007 ,  G11B20/0021 ,  G11B20/00507 ,  G11B20/10 ,  G11B20/1217 ,  G11B2020/1288 ,  G11B2220/2541

摘要： A high-density optical disc, a method for encrypting data and recording the encrypted data thereon, and a method for reproducing the encrypted data recorded thereon. A high-density optical disc such as a Blu-ray disc-read only memory (BD-ROM) has a helical track formed from the disc's outer periphery to the disc's inner periphery. An order of recording data frames on the BD-ROM is diametrically opposite to that of a rewritable optical disc such as a Blu-ray disc rewritable (BD-RE). Data can be encrypted using disc radius information or an address unit (AU) number contained in an AU and then the encrypted data is recorded on the high-density optical disc. Thus, a user holding the optical disc apparatus such as the BD-RE player can be prevented from unlawfully copying data of the BD-ROM to the BD-RE and unlawfully reproducing the copied data.

公开(公告)号：EP1512143A4

公开(公告)日：2010-02-17

申请号：EP03730892

申请日：2003-06-05

申请人： LG ELECTRONICS INC

发明人： KIM JIN YONG ,  SUH SANG WOON

IPC分类号： G11B20/00 ,  G11B20/12 ,  G11B7/007 ,  G11B20/10

CPC分类号： G11B20/00086 ,  G11B20/0021 ,  G11B20/00326 ,  G11B20/00579 ,  G11B20/1217 ,  G11B27/3027 ,  G11B2020/1221 ,  G11B2020/1268 ,  G11B2020/1277 ,  G11B2020/1287 ,  G11B2220/213 ,  G11B2220/215 ,  G11B2220/216 ,  G11B2220/2537 ,  G11B2220/2541

公开(公告)号：EP1509917A4

公开(公告)日：2009-12-02

申请号：EP03757205

申请日：2003-06-04

申请人： LG ELECTRONICS INC

发明人： KIM JIN YONG ,  SUH SANG WOON

IPC分类号： G11B20/12 ,  G06F12/08 ,  G11B7/0045 ,  G11B20/00 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B27/24 ,  G11B27/30

CPC分类号： G11B20/00086 ,  G11B20/0021 ,  G11B20/1217 ,  G11B20/14 ,  G11B27/24 ,  G11B27/3027 ,  G11B2020/1277 ,  G11B2020/1288 ,  G11B2020/1453 ,  G11B2220/213 ,  G11B2220/216 ,  G11B2220/2541

摘要： A recording medium, such as a high-density and/or read-only recording medium including a data area including at least two data sections and a linking area to link neighboring data sections, the linking area including scrambled user data produced by scrambling user data with a scrambling key, and to methods and apparatuses for forming, recording, and reproducing the recording medium.

公开(公告)号：EP1518228A4

公开(公告)日：2008-07-30

申请号：EP03757211

申请日：2003-06-05

申请人： LG ELECTRONICS INC

发明人： KIM JIN YONG ,  SUH SANG WOON

IPC分类号： G11B7/007 ,  G11B5/09 ,  G11B7/00 ,  G11B7/004 ,  G11B7/125 ,  G11B7/24

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B7/24038 ,  G11B7/24082 ,  G11B2007/0013

摘要： The present invention relates to a multi-layered high-density recording medium and an optical power adjusting method therefor. A multi-layered high-density recording medium of the present invention includes optical power related information for all layers, and a optical power adjusting method of the present invention reads first optical power related information for all layers from a multi-layered optical disk placed in a disk player, stores the read information in another storage device, and immediately makes a current optical power optimal to a moved layer without accessing the placed multi-layered optical disk by referring to the stored optical power related information when moving to another layer during record or reproduction.

公开(公告)号：EP1402648A4

公开(公告)日：2008-08-13

申请号：EP02746166

申请日：2002-07-03

申请人： LG ELECTRONICS INC

发明人： SUH SANG WOON ,  KIM JIN YONG ,  LEE JAE JIN ,  LEE JOO HYUN

IPC分类号： H03M7/14 ,  G11B20/14 ,  H03M5/14 ,  H03M7/00 ,  H03M7/46

CPC分类号： H03M7/46 ,  G11B20/1426 ,  G11B2020/1457 ,  H03M5/145

摘要： The present invention relates to method and apparatus of converting a series of data words into modulated signals. This method generates for each data word a number of intermediate sequences by combining mutually different digital words with that data word, scrambles these intermediate sequences to form alternative sequences, translates each alternative sequence into a (d,k) constrained sequence, measures for each (d,k) constrained sequence not only an inclusion rate of undesired sub-sequence but also a running DSV (Digital Sum Value), and selects one (d,k) constrained sequence having small inclusion rate for recording on an optical or magneto-optical recording medium among the (d,k) constrained sequences having maximum value of running DSV smaller than a preset limit. According to the present invention, efficient DSV control can be achieved for even relatively-long sequences.

公开(公告)号：EP1726007A4

公开(公告)日：2008-07-16

申请号：EP05721948

申请日：2005-03-15

申请人： LG ELECTRONICS INC

发明人： KIM JIN YONG

IPC分类号： G11B7/007 ,  G11B7/005 ,  G11B7/09 ,  G11B7/24 ,  G11B19/12

CPC分类号： G11B19/122 ,  G11B7/0053 ,  G11B7/00736 ,  G11B7/0901 ,  G11B7/0945 ,  G11B19/125

摘要： A recording medium and a method for recording and reproducing data on and from the recording medium are provided. Identification information, indicating which one of an in-groove recording method and an on-groove recording method has been or will be used to record data, is recorded in a specific area, such as a Burst Cutting Area (BCA) and a Permanent Information & Control data (PIC) area, of a recording medium such as a Blue-ray Disc (BD) on which a land and a groove are formed. The on-groove recording method or the in-groove recording method selected based on the identification information recorded in the specific area is used to record or reproduce data on or from the recording medium. This allows the in-groove recording method to be backward-compatibly applied to recording media.

公开(公告)号：EP1586094A4

公开(公告)日：2006-12-27

申请号：EP04705015

申请日：2004-01-24

申请人： LG ELECTRONICS INC

发明人： SUH SANG WOON ,  KIM JIN YONG

IPC分类号： G11B20/00 ,  G11B20/10 ,  G11B19/12

CPC分类号： G11B20/00086 ,  G11B19/122 ,  G11B20/0021 ,  G11B20/00304 ,  G11B20/00311 ,  G11B20/00326 ,  G11B20/00492 ,  G11B2020/1288 ,  G11B2220/2541

摘要： The present invention relates to a method of managing CPI (Copy Protection Information) for preventing unauthorized copy of encrypted content recorded on a high-density recording medium such as a BD-ROM (Blu-ray Disc ROM). In the present method, when main content data is recorded in encrypted manner, CPI that is necessary to decrypt the encrypted main content data is written in a predetermined PIC area and is also copied at least once in an area other than the PIC area.