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1. 发明专利

JP2002367296A Error correction encoding method of disk medium, error correction encoding method, disk medium, error correction method and error correction circuit 审中-公开
标题翻译：磁盘错误校正方法，错误校正方法，磁盘介质，错误校正方法和错误校正电路
公开(公告)号：JP2002367296A
公开(公告)日：2002-12-20
申请号：JP2001169742
申请日：2001-06-05
申请人： Hitachi Ltd , Matsushita Electric Ind Co Ltd , Toshiba Corp , 松下電器産業株式会社 , 株式会社日立製作所 , 株式会社東芝
发明人： TAKAGI YUJI , USUI MAKOTO , YABUNO HIROYUKI , NAKAMURA ATSUSHI , KOBAYASHI RYOJI , KIMURA NAOHIRO , TAIRA SHIGEKI , KAWAMAE OSAMU , HOSHISAWA HIROSHI , NOZEN CHOSAKU , KASHIWABARA YUTAKA
IPC分类号： G06F11/10 , G06F12/16 , G11B20/10 , G11B20/12 , G11B20/18 , H03M13/27 , H03M13/29
摘要： PROBLEM TO BE SOLVED: To provide an error correction encoding method which reduces the influence of the burst error accompanying a trend toward a higher density in development of next generation DVDs, has high interchangeability with heretofore and is strong to the burst error. SOLUTION: This error correction encoding method of a disk medium comprises interleaving and delivering two product codes in accordance with a prescribed interleaving rule and recording the same to the disk medium. The method described above has a second interleaving step of substituding the upper R/2 lines of S pieces of respective sector data of the product code on one side of the two product codes and succeeding R/2 lines with line units and a third interleaving step of alternately delivering the two product codes in the line units and recording the data by each of the delivered (R+1) lines as physical sector data in order of delivery to the disk medium, by which the method is made strong to the burst error and the recording of the address in the recording data in the same manner as heretofore is made possible.
摘要翻译：要解决的问题：为了提供一种在下一代DVD的开发中减少伴随着更高密度的趋势的突发错误的影响的纠错编码方法，与以前具有高可互换性，并且对于突发错误是强大的。解决方案：盘介质的纠错编码方法包括根据规定的交织规则对两个产品代码进行交织和传送，并将其记录到盘介质。上述方法具有第二交错步骤，用于将两个乘积码的一侧上的乘积代码的S个相应扇区数据的上R / 2线和后续的R / 2线与线单元和第三交织步骤在行单元中交替地递送两个乘积代码，并且通过递送的（R + 1）行中的每个作为物理扇区数据将数据记录到传送到盘介质的顺序，由此使该方法对于突发错误并且以与之前相同的方式在记录数据中记录地址成为可能。

2. 发明专利

JP2002329368A ERROR CORRECTION ENCODING METHOD FOR DISK MEDIUM, ERROR CORRECTION ENCODING CIRCUIT, DISK MEDIUM, ERROR CORRECTION METHOD, AND ERROR CORRECTION CIRCUIT 失效
公开(公告)号：JP2002329368A
公开(公告)日：2002-11-15
申请号：JP2001132243
申请日：2001-04-27
申请人： MATSUSHITA ELECTRIC IND CO LTD , HITACHI LTD , TOSHIBA CORP
发明人： TAKAGI YUJI , USUI MAKOTO , YABUNO HIROYUKI , NAKAMURA ATSUSHI , KOBAYASHI RYOJI , KIMURA NAOHIRO , TAIRA SHIGEKI , KAWAMAE OSAMU , HOSHISAWA HIROSHI , NOZEN CHOSAKU , KASHIWABARA YUTAKA
IPC分类号： G06F11/10 , G11B20/10 , G11B20/12 , G11B20/18 , H03M13/27 , H03M13/29
摘要： PROBLEM TO BE SOLVED: To provide an error correction encoding method which is compatible to conventional methods and is strong against burst error by reducing an influence of burst error accompanied with the rise of density in DVD development for the next generation. SOLUTION: An error correction encoding method for disk mediums is provided which interleaves two product codes in the order based on a prescribed interleave rule and sends them to record them in a disk medium. The error correction encoding method has a second interleave step where R/2 higher rows of each of S sector data of one of two product codes and R/2 following rows are substituted in the unit of rows and a third interleave step where two products codes are alternately sent in the unit of rows and sent data of every (R+1)th row are recorded in the disk medium as physical sector data in the sending order, and thus this method is strong against burst error and can record an address in recording data in the same manner as conventional methods.

3. 发明专利

JP2002324365A INFORMATION RECORDING FORMAT, INFORMATION RECORDING MEDIUM, AND INFORMATION RECORDING/REPRODUCING APPARATUS 失效
公开(公告)号：JP2002324365A
公开(公告)日：2002-11-08
申请号：JP2001129612
申请日：2001-04-26
申请人： HITACHI LTD , TOSHIBA CORP , MATSUSHITA ELECTRIC IND CO LTD
发明人： KATAYAMA YUKARI , TAIRA SHIGEKI , MAEDA TAKESHI , MIYAMOTO JIICHI , KAWAMAE OSAMU , KOJIMA TADASHI , NOZEN CHOSAKU , KASHIWABARA YUTAKA , TAKAGI YUJI , KIMURA NAOHIRO
IPC分类号： G11B20/12 , G11B20/10
摘要： PROBLEM TO BE SOLVED: To increase the disk capacity, in which the compatibility with those according to the prior arts is not greatly deteriorated, and in which a more number of sectors can be obtained. SOLUTION: The n bits of a head byte of a sector format are allotted to a region in which a seed for a scramble is stored. The 8-n bits of the head byte are used as the bits for storing a sector ID(identification), in which this portion is matched with the 24 bits data field number existing before and is used for storing a sector indigenous number.

4. 发明专利

JP2003085874A SCRAMBLING METHOD FOR DATA FRAME 审中-公开
公开(公告)号：JP2003085874A
公开(公告)日：2003-03-20
申请号：JP2001273700
申请日：2001-09-10
申请人： TOSHIBA CORP , HITACHI LTD , MATSUSHITA ELECTRIC IND CO LTD
发明人： NOZEN CHOSAKU , KASHIWABARA YUTAKA , KOJIMA TADASHI , KATAYAMA YUKARI , TAIRA SHIGEKI , MAEDA TAKESHI , MIYAMOTO JIICHI , KAWAMAE OSAMU , TAKAGI YUJI , KIMURA NAOHIRO
IPC分类号： G11B20/10 , G11B7/30 , G11B20/12 , H04L9/22
摘要： PROBLEM TO BE SOLVED: To increase the number of repetitively recordable times to an information medium which is capable of iteratively performing reading-out/writing. SOLUTION: An initial value (seed) of scrambling is arranged in a position except the top of a data frame (ST100 to ST103). Scrambling data in which patterns are initialized by the initial value (seed) is formed (ST107). The exclusive-ORs with the scrambling data are successively taken for the entire part of the data frame including the initial value (seed), thereby, randomizing of the data within the data frame is performed (ST106).

5. 发明专利

JP2002237756A ENCODING METHOD AND DECODING METHOD AND ENCODING CIRCUIT AND DECODING CIRCUIT AND STORAGE DEVICE AND STORAGE MEDIUM AND COMMUNICATION EQUIPMENT 失效
公开(公告)号：JP2002237756A
公开(公告)日：2002-08-23
申请号：JP2001033980
申请日：2001-02-09
申请人： HITACHI LTD , MATSUSHITA ELECTRIC IND CO LTD
发明人： TAIRA SHIGEKI , HOSHISAWA HIROSHI , KAWAMAE OSAMU , TAKAGI YUJI , NAKAMURA ATSUSHI , KIMURA NAOHIRO
IPC分类号： G06F11/10 , G11B20/12 , G11B20/18 , H03M13/15 , H03M13/27 , H03M13/29
摘要： PROBLEM TO BE SOLVED: To provide an encoding method and circuit for transmitting an error correction code whose correcting capability is stronger than that of a product code against a relatively short burst error, and a decoding method and circuit for decoding this. SOLUTION: In this encoding method, n pieces of h 2 column/w 2 line product codes are generated for the original data of an (n×h1×w1) symbol, and then interleaving is operated with symbol units in each connection line of an (n×w2) symbol obtained by connecting every w2 symbol in each product code 1 line by using interleave rules different for each connection line, and the results are successively transmitted. In a decoding method, deinterleave is operated to the in-line symbol unit interleave performed to each connection line of the received data at the time of encoding, and error correction is performed to the obtained product code.

6. 发明专利

JP2002190158A ERROR-CORRECTING CODING METHOD OF DISK MEDIUM, OPTICAL DISK, ERROR-CORRECTING METHOD, ERROR-CORRECTING CODING CIRCUIT AND ERROR-CORRECTING CIRCUIT 失效
公开(公告)号：JP2002190158A
公开(公告)日：2002-07-05
申请号：JP2000387562
申请日：2000-12-20
申请人： MATSUSHITA ELECTRIC IND CO LTD , HITACHI LTD
发明人： TAKAGI YUJI , USUI MAKOTO , YABUNO HIROYUKI , NAKAMURA ATSUSHI , KOBAYASHI RYOJI , KIMURA NAOHIRO , TAIRA SHIGEKI , KAWAMAE OSAMU , HOSHISAWA HIROSHI
IPC分类号： G06F11/10 , G11B20/12 , G11B20/18 , H03M13/27 , H03M13/29
摘要： PROBLEM TO BE SOLVED: To overcome the problems such that the single burst error permits the correction of the correcting code in the line direction to be sometimes impossible, and a plurality of burst error occurrences permit the correction of the whole product code to become impossible, in a conventional error-correcting method for recording the product code two-dimensionally coded in the line direction. SOLUTION: By the product-code formation step, a reliable error correction can be carried out by alternately arranging two product codes stored on a memory every line and recording these in the slant direction, and in the case of coding, even if it is the recording in the slant direction, the address can be read at a fixed interval by performing a data transposition step and a one- way cyclic step.

7. 发明专利

JP2005158239A Optical disk apparatus, clock signal generation method, program, and control apparatus 审中-公开
标题翻译：光盘设备，时钟信号生成方法，程序和控制设备
公开(公告)号：JP2005158239A
公开(公告)日：2005-06-16
申请号：JP2004311600
申请日：2004-10-26
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： NAKAJIMA TAKESHI , MIYASHITA SEIJUN , KIMURA NAOHIRO
IPC分类号： G11B20/14 , G11B7/005
摘要： PROBLEM TO BE SOLVED: To provide an optical disk apparatus, a clock signal generation method, and a program, which detect a wobble signal from a reproduced signal of an optical disk and generate a clock signal in synchronism with the wobble signal, and a control apparatus for generating a clock signal.
SOLUTION: The optical disc apparatus is provided, which comprises a signal detection means for detecting a wobble signal from a reproduced signal of an optical disc, and a generation means for generating a clock signal in synchronization with the wobble signal. The generation means comprises: a first difference signal generation means for generating a first difference signal indicating a difference between a frequency of the wobble signal and a frequency of the clock signal; a period detection means for detecting a modulation period of the wobble signal based on the first difference signal; and an adjustment means for adjusting the frequency of the clock signal based on a predetermined signal other than the first difference signal during a modulation period, and for adjusting the frequency of the clock signal based on the first difference signal during a period other than the modulation period.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种光盘装置，时钟信号生成方法和程序，其从光盘的再生信号中检测摆动信号并与摆动信号同步地生成时钟信号，以及用于产生时钟信号的控制装置。解决方案：提供了一种光盘装置，其包括用于从光盘的再现信号检测摆动信号的信号检测装置，以及用于与摆动信号同步地产生时钟信号的产生装置。产生装置包括：第一差分信号产生装置，用于产生指示摆动信号的频率与时钟信号的频率之间的差异的第一差分信号; 周期检测装置，用于基于第一差分信号检测摆动信号的调制周期; 以及调整装置，用于在调制周期期间基于除了第一差分信号之外的预定信号调整时钟信号的频率，并且用于在调制之外的周期期间基于第一差分信号调整时钟信号的频率期。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2001319429A OPTICAL DISK DEVICE 失效
公开(公告)号：JP2001319429A
公开(公告)日：2001-11-16
申请号：JP2000138643
申请日：2000-05-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KIMURA NAOHIRO , WATANABE KATSUYA
IPC分类号： G11B20/14 , H03L7/113
摘要： PROBLEM TO BE SOLVED: To provide an optical disk device capable of performing a high speed access by making a PLL(phase-locked loop) quickly pulled in without generating a pseudo lock of first frequency control. SOLUTION: The first frequency control is made operated only in the pullable range of the first frequency control according to a frequency error to be detected by a frequency error detecting circuit 14.

9. 发明专利

JP2002269921A DEVICE AND METHOD FOR RECORDING INFORMATION ON DISK RECORDING MEDIUM 失效
公开(公告)号：JP2002269921A
公开(公告)日：2002-09-20
申请号：JP2001073729
申请日：2001-03-15
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YABUNO HIROYUKI , USUI MAKOTO , TAKAGI YUJI , NAKAMURA ATSUSHI , KIMURA NAOHIRO
IPC分类号： G11B20/12 , G11B20/10 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To efficiently use a recording medium by suppressing a required quantity of substitute areas in a disk recording medium having a plurality of recording sectors each comprising lines in each of which two product codes are interleaved for each line. SOLUTION: There is provided a defective sector discrimination means or a defective sector discrimination step that divides each of lines in a sector into two sub groups on the basis of to which of two product coded data each line of each sector has belonged and judges whether a sector is defective on the basis of the number of lines where errors cannot be corrected in each subgroup so as to attain substitute recording by the slipping system for each sector.

10. 发明专利

JP2002117633A ERROR CORRECTION CODING METHOD FOR DISK MEDIUM, OPTICAL DISK, ERROR CORRECTION METHOD, ERROR CORRECTION CODING CIRCUIT AND ERROR CORRECTION CIRCUIT 失效
公开(公告)号：JP2002117633A
公开(公告)日：2002-04-19
申请号：JP2000309894
申请日：2000-10-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAKAGI YUJI , KIMURA NAOHIRO , NAKAMURA ATSUSHI , USUI MAKOTO , TANAKA SHINICHI , YABUNO HIROYUKI , KOBAYASHI RYOJI
IPC分类号： G06F11/10 , G11B20/12 , G11B20/18 , H03M13/15 , H03M13/27 , H03M13/29
摘要： PROBLEM TO BE SOLVED: To solve the problem of a case existing in which a correction code in a row direction becomes uncorrectable due to a single burst error, in a conventional error correction method which records a product code coded two- dimensionally in the row direction, and the whole product codes become uncorrectable when a plurality of burst errors are produced. SOLUTION: The error correction coding method has a coding step, in which the error detection correction coding of matrix user data is performed in at least three or more directions. Reliable error correction is enabled, by making at least two directions among the three encoding directions different from a recording direction to a disk medium, so that two correction codes do not become uncorrectable with the single burst error.

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