公开(公告)号：US06653952B2

公开(公告)日：2003-11-25

申请号：US10160023

申请日：2002-06-04

申请人： Atsushi Hayami ,  Toshio Kuroiwa ,  Tsuyoshi Oki

发明人： Atsushi Hayami ,  Toshio Kuroiwa ,  Tsuyoshi Oki

IPC分类号： H03M700

CPC分类号： H03M5/145 ,  G11B20/1426 ,  G11B2020/1282 ,  G11B2020/1284 ,  G11B2020/143 ,  G11B2020/1457 ,  H03M7/46

摘要： There is disclosed a modulation method in which a four bit unit of a plurality of continuous input data words is encoded into a six bit unit of a plurality of continuous output code words by referring to a plurality of coding tables including output code words corresponding to input data words, and coding table designation information in which a coding table for use in encoding the next input data word is designated. The plurality of coding tables includes at least a first coding table and a second coding table, and first and second signals respectively obtained by subjecting a first output code word of said first coding table corresponding to a predetermined input data word and a second output code word of said second coding table corresponding to said predetermined input data word to NRZI modulation are reverse to each other in polarity. Further, in particular, two redundant bits are inserted into the plurality of continuous output code words for each predetermined number of corresponding data words. Even with such redundant bits, a DSV control is performed in any section, k satisfies 9 in a (1, k) RLL rule, and a repetition frequency of a minimum run is limited.

摘要翻译： 公开了一种调制方法，其中通过参考包括与输入对应的输出代码字的多个编码表，将多个连续输入数据字中的四位单位编码为多个连续输出代码字的六位单元 数据字和编码表指定信息，其中指定用于编码下一个输入数据字的编码表。 多个编码表至少包括第一编码表和第二编码表，以及分别通过对与预定输入数据字对应的所述第一编码表的第一输出代码字和第二输出代码字 对应于所述预定输入数据字到NRZI调制的所述第二编码表的极性相反。 此外，特别地，对于每个预定数量的相应数据字，两个冗余比特被插入到多个连续输出码字中。 即使使用这样的冗余比特，在任何部分都执行DSV控制，在（1，k）RLL规则中k满足9，并且限制最小运行的重复频率。

公开(公告)号：US06898166B2

公开(公告)日：2005-05-24

申请号：US10054786

申请日：2002-01-25

申请人： Tsuyoshi Oki ,  Atsushi Hayami

发明人： Tsuyoshi Oki ,  Atsushi Hayami

IPC分类号： G11B20/14 ,  G11B27/30 ,  H03M5/14 ,  H03M7/14 ,  H03M7/46 ,  H04L7/08 ,  H04L25/49 ,  G11B7/05 ,  H03M7/00

CPC分类号： H03M7/46 ,  G11B20/1426 ,  G11B27/3027 ,  G11B2220/2562 ,  H03M5/145

摘要： There is disclosed a synchronous signal generating method, recording apparatus, transmitting apparatus, recording medium and transmission medium in which a plurality of coding tables is used to convert an input data word of p-bits to a code word of q-bits (q>p), and a code word string obtained by directly coupling the code words is recorded and reproduced in a recording medium such as an optical disk and magnetic disk, or transmitted via a transmitting portion. A synchronous frame consists of a synchronous signal and the cord word string satisfying restriction on minimum run length and maximum run length. The synchronous signal is separable from the code word string satisfying a predetermined run length restriction rule, and is constituted with a specific code for identifying its position in one sector, and a synchronous pattern consisting of a first bit pattern having a run length longer than the maximum run length of the predetermined run length restriction rule by 1T or more, and a following second bit pattern having a run length longer than the minimum run length.

摘要翻译： 公开了一种同步信号生成方法，记录装置，发送装置，记录介质和传输介质，其中使用多个编码表将p位的输入数据字转换为q位的码字（q> p），并且通过直接耦合码字获得的码字串被记录和再现在诸如光盘和磁盘的记录介质中，或者经由发送部分发送。 同步帧由同步信号和绳字符串组成，满足最小游程长度和最大游程长度的限制。 该同步信号与满足规定游程长度限制规则的代码字串可分离，并且由用于识别其在一个扇区中的位置的特定代码构成，并且由具有长于该扇区长度的游程长度的第一位模式组成的同步模式 预定游程长度限制规则的最大游程长度为1T以上，以及具有比最小游程长度更长的游程长度的后续第二比特模式。

公开(公告)号：US06963296B2

公开(公告)日：2005-11-08

申请号：US10073397

申请日：2002-02-12

申请人： Tsuyoshi Oki ,  Atsushi Hayami

发明人： Tsuyoshi Oki ,  Atsushi Hayami

IPC分类号： G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B27/30 ,  H03M5/14 ,  H03M7/14 ,  H03M13/27 ,  H03M7/00

CPC分类号： H03M13/27 ,  G11B20/1426 ,  G11B20/18 ,  G11B20/1833 ,  G11B20/1866 ,  G11B27/3027 ,  G11B2020/1457 ,  G11B2220/2562 ,  H03M5/145

摘要： There is disclosed a recording method for performing a DSV control while recording a recording signal generated by inserting a synchronous signal for decoding reproduction data into every predetermined number of code words in a code word string satisfying a predetermined run length restriction rule and to be outputted into a recording medium, when a plurality of coding tables are used to convert an input data word of p-bits to a code word of q-bits (q>p), and the code word string obtained by directly coupling the code words is recorded and reproduced in a recording medium such as an optical disk and magnetic disk, or transmitted via a transmitting portion, wherein the p-bits are 8 bits, the q-bits are 15 bits, and the predetermined run length restriction rule stipulates that a minimum run length of the signal obtained by NRZI-converting the code word excluding the synchronous signal is 3T, and a maximum run length is any one of 11T, 12T, 13T, and 14T.

摘要翻译： 公开了一种记录方法，用于在记录通过将再现数据解码的同步信号插入到满足规定游程长度限制规则的码字串中的每个预定数量的码字而产生的记录信号的同时，并将其输出 记录介质，当使用多个编码表将p位的输入数据字转换为q位（q> p）的代码字时，并且记录通过直接耦合代码字获得的代码字串 并且在诸如光盘和磁盘的记录介质中再现，或者经由发送部分发送，其中p位是8位，q位是15位，并且预定的行程长度限制规则规定最小值 通过NRZI转换除了同步信号之外的码字获得的信号的游程长度为3T，最大游程长度为11T，12T，13T和14T中的任何一个。

公开(公告)号：US07016286B2

公开(公告)日：2006-03-21

申请号：US10178619

申请日：2002-06-25

申请人： Atsushi Hayami ,  Tsuyoshi Oki ,  Toshio Kuroiwa

发明人： Atsushi Hayami ,  Tsuyoshi Oki ,  Toshio Kuroiwa

IPC分类号： G11B5/09

CPC分类号： H03M5/145 ,  G11B20/1426

摘要： First and second synchronous words having respective numbers of times of inversion different from each other in NRZI conversion are generated in a synchronous word generation portion, and first and second code word series data are generated by arranging code word data generated making reference to a run-length coding table after these two synchronous words. With respect to the first and second code word series data, DSV calculation results stored in two DSV calculation peak value memories corresponding to these data are compared with each other by a peak value comparison portion. Based on a comparison result, the code word series data having a smaller direct-current component generated in NRZI conversion is selected.

公开(公告)号：US06819724B2

公开(公告)日：2004-11-16

申请号：US09737597

申请日：2000-12-18

申请人： Atsushi Hayami ,  Tsuyoshi Oki

发明人： Atsushi Hayami ,  Tsuyoshi Oki

IPC分类号： H04D100

CPC分类号： H03M13/6331 ,  G11B20/10009 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/6343

摘要： A data estimating circuit outputs estimation data which estimates input data at a time earlier by a predetermined bit cycle than the input data based on decoded data series outputted from a path memory. A target value computing circuit corrects the target value with a difference between the estimation data and input data as a target value error and outputs obtained plural first target values to a branchmetric operating circuit as plural target values. Because the branchmetric operating circuit can conduct branchmetric operation based on plural first target values near plural averages having the highest incidence (having peaks in histogram), decoding performance can be improved more as compared to using fixed target values.

摘要翻译： 数据估计电路输出基于从路径存储器输出的解码数据序列，输出预测数据比预定的位周期预测输入数据的估计数据。 目标值计算电路用估计数据和输入数据之间的差作为目标值误差来校正目标值，并将获得的多个第一目标值作为多个目标值输出到分支操作电路。 由于分支操作电路可以基于具有最高入射角（具有直方图峰值）的多个平均值附近的多个第一目标值进行支路测量操作，所以与使用固定目标值相比，可以更好地提高解码性能。

公开(公告)号：US06492920B2

公开(公告)日：2002-12-10

申请号：US09983948

申请日：2001-10-26

申请人： Tsuyoshi Oki ,  Atsushi Hayami

发明人： Tsuyoshi Oki ,  Atsushi Hayami

IPC分类号： H03M700

CPC分类号： G11B20/1426 ,  G11B2020/1461 ,  G11B2020/1465 ,  G11B2020/1473

摘要： A coding table portion includes six coding tables each storing a code word and status information indicating a coding table for use in modulating a next input data word in order to obtain a next code word which satisfies a predetermined run length restriction rule even if the next code word is coupled directly with the preceding code word, corresponding to each input data word. In the coding table portion, the code words and status informations allocated corresponding to input data words of a number set up preliminarily in succession from the highest appearance frequency to a lower one in one or more coding tables of the plural coding tables are replaced with code words having smaller RDSs and status informations allocated corresponding to other input data words in the same coding table. Consequently, the input data word is modulated using the six coding tables.

摘要翻译： 编码表部分包括六个编码表，每个编码表存储代码字和指示用于调制下一个输入数据字的编码表的状态信息，以获得满足预定行程长度限制规则的下一个代码字，即使下一个代码 字直接与先前的代码字耦合，对应于每个输入数据字。 在编码表部分中，将与多个编码表的一个或多个编码表中的从最高出现频率连续预先设置的数字的输入数据字分配的代码字和状态信息替换为代码 在相同的编码表中对应于其他输入数据字分配的具有较小RDS和状态信息的字。 因此，使用六个编码表调制输入数据字。

公开(公告)号：US07193936B2

公开(公告)日：2007-03-20

申请号：US10821835

申请日：2004-04-12

申请人： Tsuyoshi Oki

发明人： Tsuyoshi Oki

IPC分类号： G11B7/005

CPC分类号： G11B7/0053 ,  G11B7/0052

摘要： A method and apparatus for detecting information recorded as a phase-modulated wobble along a track of an optical disk, whereby a reference phase section is recorded with wobble having a predetermined reference phase and whereby respective polarities of phase integration values obtained by synchronous detection of phase-modulated unit sections following the reference phase section, in a playback wobble signal, are compared with the polarity of a reference phase integration value obtained for the reference phase section, to thereby detect respective bit states expressed by the phase-modulated unit sections.

摘要翻译： 一种用于检测沿着光盘的轨道记录为相位调制摆动的信息的方法和装置，由此以具有预定参考相位的摆动来记录基准相位部分，并且由此通过同步检测相位获得的相位积分值的各自的极性 将重放摆动信号中的参考相位部分之后的调制单元部分与对基准相位部分获得的参考相位积分值的极性进行比较，从而检测由相位调制单元部分表示的各个比特状态。

公开(公告)号：US07586820B2

公开(公告)日：2009-09-08

申请号：US11264015

申请日：2005-11-02

申请人： Tsuyoshi Oki

发明人： Tsuyoshi Oki

IPC分类号： G11B7/00

CPC分类号： G11B20/1403 ,  G11B7/0053 ,  G11B27/105 ,  G11B27/24 ,  G11B27/3027

摘要： A pattern of an input sync signal is compared with sub patterns in a first sync pattern. The sub patterns in the first sync pattern are equal to the patterns of true sync signals, respectively. When the pattern of the input sync signal agrees with none of the sub patterns in the first sync pattern, the pattern of the input sync signal is compared with sub patterns in a second sync pattern. The sub patterns in the second sync pattern have temporal fluctuations with respect to the patterns of the true sync signals. Each of the sub patterns in the second sync pattern is assigned to only one of the true sync signals. It is determined that a sync signal is detected when the pattern of the input sync signal agrees with one of the sub patterns in the first and second sync patterns.

摘要翻译： 将输入同步信号的模式与第一同步模式中的子模式进行比较。 第一同步模式中的子模式分别等于真同步信号的模式。 当输入同步信号的模式与第一同步模式中的任何子模式不一致时，将输入同步信号的模式与第二同步模式中的子模式进行比较。 第二同步图案中的子图案相对于真同步信号的图案具有时间波动。 第二同步模式中的每个子模式被分配给仅一个真同步信号。 当输入同步信号的模式与第一和第二同步模式中的一个子模式一致时，确定同步信号被检测到。

公开(公告)号：US10351937B2

公开(公告)日：2019-07-16

申请号：US14235414

申请日：2012-07-27

申请人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Akinobu Minami ,  Hajime Hasegawa ,  Chisato Wakabayashi ,  Tsuyoshi Oki

发明人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Akinobu Minami ,  Hajime Hasegawa ,  Chisato Wakabayashi ,  Tsuyoshi Oki

IPC分类号： C22C38/38 ,  C22C38/34 ,  C22C38/28 ,  C22C38/22 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C25D5/48 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C21D8/02 ,  C25D5/36 ,  C22C18/00 ,  C22C18/04 ,  B32B15/01 ,  C25D7/06

摘要： The present invention provides a high-strength steel sheet excellent in impact resistance. The high-strength steel sheet contains predetermined contents of C, Si, Mn, P, S, Al, Ti, N, and O, with the balance being iron and inevitable impurities, and has a steel sheet structure in which, in a ⅛ thickness to ⅜ thickness region across ¼ of a sheet thickness, 1 to 8% retained austenite is contained in volume fraction, an average aspect ratio of the retained austenite is 2.0 or less, an amount of solid-solution Mn in the retained austenite is 1.1 times an average amount of Mn or more, and TiN grains having a 0.5 μm average grain diameter or less are contained, and a density of AlN grains with a 1 μm grain diameter or more is 1.0 pieces/mm2 or less, wherein a maximum tensile strength is 900 MPa or more.

公开(公告)号：US20140205855A1

公开(公告)日：2014-07-24

申请号：US14235414

申请日：2012-07-27

申请人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Akinobu Minami ,  Hajime Hasegawa ,  Chisato Wakabayashi ,  Tsuyoshi Oki

发明人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Akinobu Minami ,  Hajime Hasegawa ,  Chisato Wakabayashi ,  Tsuyoshi Oki

IPC分类号： C22C38/38 ,  C22C38/34 ,  C22C38/28 ,  C22C38/22 ,  C22C38/16 ,  B32B15/01 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C22C38/14

CPC分类号： C22C38/38 ,  B32B15/013 ,  C21D8/0247 ,  C22C18/00 ,  C22C18/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/28 ,  C22C38/34 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C25D5/36 ,  C25D5/48 ,  C25D7/0614 ,  Y10T428/12611 ,  Y10T428/12799

摘要： [Summary] The present invention provides a high-strength steel sheet excellent in impact resistance. The high-strength steel sheet contains predetermined contents of C, Si, Mn, P, S, Al, Ti, N, and O, with the balance being iron and inevitable impurities, and has a steel sheet structure in which, in a ⅛ thickness to ⅜ thickness region across ¼ of a sheet thickness, 1 to 8% retained austenite is contained in volume fraction, an average aspect ratio of the retained austenite is 2.0 or less, an amount of solid-solution Mn in the retained austenite is 1.1 times an average amount of Mn or more, and TiN grains having a 0.5 μm average grain diameter or less are contained, and a density of AlN grains with a 1 μm grain diameter or more is 1.0 pieces/mm2 or less, wherein a maximum tensile strength is 900 MPa or more.

摘要翻译： 发明内容本发明提供耐冲击性优异的高强度钢板。 高强度钢板含有预定含量的C，Si，Mn，P，S，Al，Ti，N和O，余量为铁和不可避免的杂质，并且具有钢板结构，其中在 厚度为⅜厚度区域，1/4的残留奥氏体含量为1〜8％，残留奥氏体的平均纵横比为2.0以下，残留奥氏体中的固溶Mn量为1.1 的平均粒径Mn以上，并且含有0.5μm平均粒径以下的TiN粒子，1μm以上的AlN粒子的密度为1.0个/ mm 2以下，其中，最大拉伸强度 强度为900MPa以上。