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1. 发明专利

JP2004241044A Information recording medium, information reproducing apparatus, and information recording and reproducing apparatus 有权
公开(公告)号：JP2004241044A
公开(公告)日：2004-08-26
申请号：JP2003029078
申请日：2003-02-06
申请人： Toshiba Corp , 株式会社東芝
发明人： ANDO HIDEO , NODAN CHOSAKU , KOJIMA TADASHI , OGAWA AKITO , KASHIWABARA YUTAKA , NAGAI YUJI , YAMADA HISASHI
IPC分类号： G11B20/12 , G11B7/007 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To display a high resolution main video and high image quality sub-video, secure a large capacity and high compatibility of formats, obtain a high reliability of the once writing or rewriting of PC data and reproduction of address information, improve the accuracy of extracting a reference clock from a wobble signal, assure a high-speed access and expansion to two-recording layer on a one-side. SOLUTION: The data recordable to an information recording medium and the data recorded to the information recording medium have a first data unit (ECC block). The first data unit consists of a second data unit (segment), the second data unit consists of a third data unit (sector), and the third data unit consists of a fourth data unit (sink data). Error detection or error correction is possible within the first data unit. COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JP2004227688A Optical disk with wobble track, and device using the same 有权
公开(公告)号：JP2004227688A
公开(公告)日：2004-08-12
申请号：JP2003015019
申请日：2003-01-23
申请人： Toshiba Corp , 株式会社東芝
发明人： NAGAI YUJI , NODAN CHOSAKU , OGAWA AKITO , KURODA KAZUTO
IPC分类号： G11B20/14 , G11B7/00 , G11B7/004 , G11B7/005 , G11B7/007 , G11B20/02 , G11B20/10 , G11B20/12 , G11B27/24
CPC分类号： G11B27/24 , G11B7/0053 , G11B7/24082 , G11B20/025 , G11B20/1217 , G11B2020/1268 , G11B2020/1287 , G11B2020/1298 , G11B2220/216 , G11B2220/218 , G11B2220/2562 , G11B2220/257 , G11B2220/2575
摘要： PROBLEM TO BE SOLVED: To demodulate the phase modulated wobble signals more surely even when external noise is large.
SOLUTION: When an integer M is defined as the number of wobble waves, address information is constituted with 1-bit M wobble as a basic unit, and the address information is NRZ-recorded. When an integer N is defined as the number of wobble waves and the M is 2N (e.g. M=12, N=6), a synchronizing signal to be used for detecting synchronization of the address information is constituted with 1-bit N wobble as a basic unit. The synchronizing signal (6 wobbles per 1 bit) constituted in this way is recorded on the head side of the address information (12 wobbles per 1 bit).
COPYRIGHT: (C)2004,JPO&NCIPI

3. 发明专利

JP2004253030A Optical disk medium, and optical disk recording and reproducing device 有权
公开(公告)号：JP2004253030A
公开(公告)日：2004-09-09
申请号：JP2003040444
申请日：2003-02-19
申请人： Nec Corp , Toshiba Corp , 日本電気株式会社 , 株式会社東芝
发明人： NODAN CHOSAKU , SATO YUJI , OSAWA HIDEAKI , YAMANAKA YUTAKA , KAYANUMA KINJI , IWANAGA TOSHIAKI
IPC分类号： G11B20/10 , G11B7/004 , G11B7/007 , G11B20/12 , G11B20/14 , G11B20/18
CPC分类号： G11B20/1217 , G11B20/1833 , G11B2020/1222 , G11B2020/1232 , G11B2020/1239 , G11B2020/1265 , G11B2020/1278 , G11B2220/2562
摘要： PROBLEM TO BE SOLVED: To improve the problem that errors caused in a format modulation part are concentrated to the same column data of ECC in the format of a recording type optical disk. SOLUTION: An additional synchronizing frame is given to recording data, constitution of an address sector is set to odd number pieces per one ECC block. Thereby, concentration of errors can be avoided. COPYRIGHT: (C)2004,JPO&NCIPI

4. 发明专利

JP2004253099A Sync frame structure, information storage medium, information recording method, information reproducing method, and information reproducing device 审中-公开
公开(公告)号：JP2004253099A
公开(公告)日：2004-09-09
申请号：JP2003045054
申请日：2003-02-21
申请人： Toshiba Corp , 株式会社東芝
发明人： NODAN CHOSAKU , ANDO HIDEO
IPC分类号： G11B20/12 , G11B7/007 , G11B20/14 , G11B20/18 , G11B27/30
CPC分类号： G11B20/1217 , G11B20/1426 , G11B20/1833 , G11B27/3027 , G11B2020/1225 , G11B2020/1287 , G11B2220/2562 , G11B2220/2579
摘要： PROBLEM TO BE SOLVED: To improve reliability of detection of a synchronism code simplifying position detection of the synchronism code. SOLUTION: When a first pattern (e.g. sync-code no."2""1""0" in sync-frame no."00") consisting of combination of continuous three synchronism codes is compared with a second pattern (e.g. sync-code no."1""0""1 in sync-frame no."01") consisting of combination in which a position of the synchronism code is deviated from the first pattern by one piece, synchronism codes of two or more are varied. COPYRIGHT: (C)2004,JPO&NCIPI

5. 发明专利

JP2004213863A Code modulating method and code modulating apparatus, demodulating method and demodulating apparatus, and information recording medium 有权
公开(公告)号：JP2004213863A
公开(公告)日：2004-07-29
申请号：JP2003399434
申请日：2003-11-28
申请人： Nec Corp , Toshiba Corp , 日本電気株式会社 , 株式会社東芝
发明人： KAYANUMA KINJI , IWANAGA TOSHIAKI , NODAN CHOSAKU
IPC分类号： G11B20/14 , G11B27/30 , H03M7/14
CPC分类号： G11B27/3027 , G11B20/1426 , G11B2020/1457 , G11B2220/2562
摘要： PROBLEM TO BE SOLVED: To provide a code modulating method, a code modulating apparatus, a demodulating method and a demodulating apparatus which are used in recording or reproducing digital data on/from an optical disk.
SOLUTION: A run length in a channel bit train has an encoding rate of 2/3 which is equal to that of (1, 7) modulation. A data bit train is converted into the channel bit train so that the run length has a minimum value 1 and a maximum value 10. Further, upon modulating any data bit train, the channel bit train does not include a pattern in which the run length 1 is continuously repeated six times or more. In addition, the channel bit train has a DSV control bit which can select the "0" bit or "1" bit in accordance with a DSV. The channel bit train obtained by using random data for the data bit train is NRZI converted into a signal. A frequency component of the signal is reduced from a maximum value of the frequency component by 20 dB or less as an amplitude ratio at a frequency of 1/10,000 or less of a channel clock frequency.
COPYRIGHT: (C)2004,JPO&NCIPI

6. 发明专利

JP2004213767A Data converting device and data converting method 审中-公开
标题翻译：数据转换装置和数据转换方法
公开(公告)号：JP2004213767A
公开(公告)日：2004-07-29
申请号：JP2002382261
申请日：2002-12-27
申请人： Toshiba Corp , 株式会社東芝
发明人： NODAN CHOSAKU , ANDO HIDEO
IPC分类号： G11B20/14 , H03M5/14 , H03M7/14
CPC分类号： H03M5/145 , G11B20/1426
摘要： PROBLEM TO BE SOLVED: To provide a data converting method in which the minimum continuous number of times 1 of "0" in a data train after conversion is permitted, and conversion processing can be simplified.
SOLUTION: A prescribed 4-bit data is converted to 6-bit data by a conversion table of either of first and second conversion tables (STATE1, STATE2). These tables convert to 6-bit data in which the minimum continuous number of times 1 of a bit "0" between bit "1" and "1" is permitted. The last code of at least one conversion code out of conversion codes in these tables is an inversion bit (*) for suppressing DC. The inversion bit selects "1" or "0" in accordance with conditions.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：提供一种数据转换方法，其中允许在转换之后的数据列中的“0”的最小连续次数1，并且可以简化转换处理。解决方案：通过第一和第二转换表（STATE1，STATE2）之一的转换表将规定的4位数据转换为6位数据。这些表转换为6位数据，其中允许位“1”和“1”之间的位“0”的最小连续次数1。这些表中的转换代码中的至少一个转换代码的最后一个代码是用于抑制DC的反转位（*）。反转位根据条件选择“1”或“0”。版权所有（C）2004，JPO＆NCIPI

7. 发明专利

JP2004259436A Synchronous code generation method, information recording method, information reproducing method, information reproducing device, and information storage medium 有权
公开(公告)号：JP2004259436A
公开(公告)日：2004-09-16
申请号：JP2004128233
申请日：2004-04-23
申请人： Toshiba Corp , 株式会社東芝
发明人： ANDO HIDEO , NODAN CHOSAKU
IPC分类号： G11B20/14 , G11B20/12
摘要： PROBLEM TO BE SOLVED: To make it possible to detect a synchronous code very simply, easily, and speedily by arranging a code pattern for detecting one kind of synchronous position in the synchronous code to enable detecting the synchronous code only by detecting this pattern. SOLUTION: When user information is recorded in an information storage medium in physical sector 5 units in a form after modulated according to a predetermined modulation rule, a plurality of synchronous codes is placed in the physical sectors and the synchronous codes have a common fixed code area (111) and variable code areas (112, 113) different among the synchronous codes. The synchronous position detecting code (121) is recorded in the fixed code area (111), and this code contains a combination pattern of a pattern with (k + 2) consecutive pieces of "0" and a pattern with two consecutive pieces of "0". COPYRIGHT: (C)2004,JPO&NCIPI

8. 发明专利

JP2004253129A Multi-purpose information storage medium, its storing and reproducing method, and its reproducing device 有权
公开(公告)号：JP2004253129A
公开(公告)日：2004-09-09
申请号：JP2004113521
申请日：2004-04-07
申请人： Toshiba Corp , 株式会社東芝
发明人： ANDO HIDEO , WATABE KAZUO , SATO YUJI , SUGAYA JUKO , NODAN CHOSAKU
IPC分类号： G11B20/10 , G11B7/004 , G11B7/007 , G11B20/12
摘要： PROBLEM TO BE SOLVED: To provide a data structure excellent in compatibility for various information recording media. SOLUTION: A user data recording area 303 and an intermediate area 301 are alternately prepared on a recording medium 9 and the intermediate area is recorded with the information used for synchronizing. The specific relations are maintained for the positions of a postamble, the start of a specific wobble pattern, the start of the recorded data, and the end of the preceding units of recording. And the recorded data include an ECC block and at least one of the specific wobble patterns is arranged right in front of the start position of the ECC block. COPYRIGHT: (C)2004,JPO&NCIPI

9. 发明专利

JP2004253029A Optical disk medium and optical disk drive 有权
公开(公告)号：JP2004253029A
公开(公告)日：2004-09-09
申请号：JP2003040340
申请日：2003-02-18
申请人： Nec Corp , Toshiba Corp , 日本電気株式会社 , 株式会社東芝
发明人： YAMANAKA YUTAKA , KAYANUMA KINJI , NODAN CHOSAKU , SATO YUJI , OSAWA HIDEAKI
IPC分类号： G11B20/10 , G11B7/00 , G11B7/005 , G11B7/007 , G11B20/12 , G11B20/14 , G11B20/22 , G11B27/24
CPC分类号： G11B7/24082 , G11B7/0053 , G11B7/00745 , G11B20/22 , G11B27/24
摘要： PROBLEM TO BE SOLVED: To provide an optical disk medium and an optical disk drive capable of realizing the reproduction of satisfactory format information by solving such a problem that the detection reliability of the format information is lowered by the interference of a wobble modulation area between adjacent recording tracks, in the case a format modulation area is being formed on a specific place in an address segment.
SOLUTION: By limiting a length of the modulation area to ≤25% and selecting the positional arrangement from two places, such positional arrangement becomes realizable that the wobble modulation areas are not overlapped between the adjacent recording tracks, even in the optical disk medium of CLV (constant linear velocity) constitution.
COPYRIGHT: (C)2004,JPO&NCIPI

10. 发明专利

JP2004247028A Information recording medium, information recording and reproducing method, and information recording and reproducing apparatus 审中-公开
公开(公告)号：JP2004247028A
公开(公告)日：2004-09-02
申请号：JP2003411431
申请日：2003-12-10
申请人： Toshiba Corp , 株式会社東芝
发明人： OGAWA AKITO , NODAN CHOSAKU , MATSUMARU SUKEAKI , NAGAI YUJI
IPC分类号： G11B7/24 , G11B7/0045 , G11B7/007
摘要： PROBLEM TO BE SOLVED: To provide an information recording medium which makes land-and-groove recording and wobble modified addresses compatible with each other and makes high-density recording possible. SOLUTION: The information recording medium has guide grooves for recording and reproducing information to and from an information recording region and the information is formed as recording marks in both of the recesses and projections of the guide grooves. The management information including the address information is recorded by wobbles of the guide grooves. The wobbles are so formed that the offset of the reproduced signal of the recording marks generated by the wobbles of the guide grooves attains ≤5.5% of the amplitude of the reproduced signal. COPYRIGHT: (C)2004,JPO&NCIPI

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