公开(公告)号：US08000050B2

公开(公告)日：2011-08-16

申请号：US12413516

申请日：2009-03-28

申请人： Toshikazu Kanaoka ,  Akihiro Itakura

发明人： Toshikazu Kanaoka ,  Akihiro Itakura

IPC分类号： G11B5/09

CPC分类号： G11B5/59627 ,  G11B5/5965 ,  G11B20/10222 ,  G11B20/1217 ,  G11B20/1403 ,  G11B2020/1242 ,  G11B2020/1245 ,  G11B2020/1281 ,  G11B2020/1484 ,  G11B2220/2516

摘要： A magnetic storage control apparatus for controlling a magnetic storage apparatus that uses a recording medium having a plurality of reference signals on its track and having a data area between the reference signals. The apparatus includes: a measurement section that reproduces the reference signal in a predetermined track of the recording medium and measures, for each data area, the time for a head to scan the data area to obtain a measurement value; a calculation section that calculates a setting value concerning the frequency of a recording clock used in data recording based on the measurement values of a plurality of data areas obtained by the measurement section; and a generation section that generates the recording clock based on the measurement values obtained by the measurement section and setting value calculated by the calculation section.

摘要翻译： 一种磁存储控制装置，用于控制在其轨道上使用具有多个参考信号的记录介质并且具有参考信号之间的数据区的磁存储装置。 该装置包括：测量部分，其再现记录介质的预定轨道中的参考信号，并且针对每个数据区域测量头扫描数据区域以获得测量值的时间; 计算部，其基于由所述测量部获得的多个数据区域的测量值，计算与在数据记录中使用的记录时钟的频率有关的设定值; 以及生成部，其基于由测量部获得的测量值和由计算部计算出的设定值来生成记录时钟。

公开(公告)号：US07620882B2

公开(公告)日：2009-11-17

申请号：US11394266

申请日：2006-03-30

申请人： Toshikazu Kanaoka ,  Toshihiko Morita

发明人： Toshikazu Kanaoka ,  Toshihiko Morita

IPC分类号： H03M13/03

CPC分类号： G11B20/10009 ,  G11B20/10055 ,  G11B20/10074 ,  G11B20/10083 ,  G11B20/10296 ,  G11B20/1426 ,  G11B2020/1446 ,  H03M13/41 ,  H03M13/6343

摘要： A decoder decodes a code by selecting, based on a predetermined condition, a path out of paths representing a transition of each of states in a trellis diagram. A storing unit stores, when a path at time k is selected, information on a selection history of a path selected at time prior to time (k−(a constraint length of a code)+1). A path detecting unit detects a path to be excluded from a path selection candidate, based on the information stored in the storing unit and information on a state of a transition source when a state transition occurs from time k−1 to time k.

摘要翻译： 解码器通过基于预定条件选择代表网格中的每个状态的转换的路径的路径来对码进行解码。 当选择时刻k的路径时，存储单元存储关于在时间之前（k-（代码的约束长度）+1）时选择的路径的选择历史的信息。 路径检测单元基于存储在存储单元中的信息，以及当从时刻k-1到时间k发生状态转换时关于转换源的状态的信息，检测要从路径选择候选排除的路径。

公开(公告)号：US20090262404A1

公开(公告)日：2009-10-22

申请号：US11991895

申请日：2006-08-28

申请人： Akiyoshi Uchida ,  Toshikazu Kanaoka

发明人： Akiyoshi Uchida ,  Toshikazu Kanaoka

IPC分类号： G03H1/30

CPC分类号： G03H1/02 ,  G03H1/0236 ,  G03H1/182 ,  G03H1/26 ,  G03H2001/0264 ,  G03H2223/12 ,  G03H2250/33 ,  G03H2250/37 ,  G03H2260/30 ,  G03H2270/54 ,  G11B7/0065 ,  G11B7/24044 ,  G11B7/261

摘要： In a hologram recording medium, a bleaching beam irradiated to fix recorded information is prevented from spreading and advancing into an unrecorded area. The hologram recording medium is provided with a hologram material layer for recording information to be recorded by irradiating a same area with an information beam which corresponds to the information to be recorded and a reference beam for reading out the recorded information. The hologram material layer is divided into a plurality of recording zones by a plurality of light blocking walls, and the light blocking walls are formed in the recording zone to which recording process has been performed, by using a material not passing through the bleaching beam irradiated for fixing the recorded information.

摘要翻译： 在全息记录介质中，防止照射固定记录信息的漂白光束扩散并进入未记录区域。 全息图记录介质设置有全息图材料层，用于通过用与要记录的信息相对应的信息光束照射相同的区域来记录要记录的信息，以及用于读出记录的信息的参考光束。 全息图材料层通过多个遮光壁被分成多个记录区，并且在已经进行了记录处理的记录区中形成遮光壁，通过使用不经过漂白束照射的材料 用于固定记录的信息。

公开(公告)号：US20090199073A1

公开(公告)日：2009-08-06

申请号：US12276958

申请日：2008-11-24

申请人： Toshikazu Kanaoka ,  Toshio Ito

发明人： Toshikazu Kanaoka ,  Toshio Ito

IPC分类号： H03M13/27 ,  G06F11/10

CPC分类号： H03M13/2927 ,  G11B20/1833 ,  G11B20/1866 ,  G11B2020/1836 ,  G11B2020/1843 ,  G11B2020/185 ,  G11B2220/2516 ,  G11B2220/2537 ,  H03M13/098 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/271 ,  H03M13/2721 ,  H03M13/2778 ,  H03M13/2906 ,  H03M13/2918 ,  H03M13/2921 ,  H03M13/293 ,  H03M13/2957

摘要： An error correction device error corrects without increasing in circuit scale. An encoder, includes: a first ECC encoder which interleaves a data string into n (n≧2) blocks of data strings at every m (m≧2) bits, and adds the error correction code parity; a parity encoder which creates a parity bit at every plurality of bits of the error correction code word, and adds the parity bit to said error correction code word; and a second ECC encoder, which generates a second error correction encoding, which is a linear encoding using iterative decoding. Concatenated type encoded data, where a parity bit is added to every plurality of bits, is created, so an increase of circuit scale can be prevented even if a data string is interleaved into a plurality of blocks and error correction code parity is generated.

摘要翻译： 错误纠正装置的错误在电路规模上没有增加。 一种编码器，包括：第一ECC编码器，每m（m> = 2）个比特将数据串交织成n（n> = 2）个数据串，并将纠错码奇偶校验相加; 奇偶校验编码器，其在所述纠错码字的每多个位产生奇偶校验位，并将所述奇偶校验位加到所述纠错码字; 以及第二ECC编码器，其生成使用迭代解码的线性编码的第二纠错编码。 创建了对每个多个比特添加奇偶校验位的级联型编码数据，因此即使将数据串交错为多个块并产生纠错码奇偶校验，也可以防止电路规模的增加。

公开(公告)号：US07324249B2

公开(公告)日：2008-01-29

申请号：US11341592

申请日：2006-01-30

申请人： Akiyoshi Uchida ,  Toshikazu Kanaoka

发明人： Akiyoshi Uchida ,  Toshikazu Kanaoka

IPC分类号： G03H1/26 ,  G11B7/00 ,  G11B5/09 ,  G11B15/52 ,  G11B19/02 ,  G11B20/00

CPC分类号： G11C13/042 ,  G11B7/005 ,  G11B7/0065 ,  G11B7/00736 ,  G11B7/00781

摘要： A recording and reproducing apparatus includes a reproduction signal detection unit reproducing a two-dimensional pattern previously recorded on a holographic recording medium or user data recorded on the holographic recording medium, a reference pattern storage unit previously storing a reference pattern to be provided when the two-dimensional pattern is reproduced, a correction information generation unit comparing a reproduction reference pattern signal corresponding to the reproduced two-dimensional pattern with the stored reference pattern and removing fixed distortion contained in the reproduction reference pattern signal to generate correction information used for reproducing the reference pattern from the reproduction reference pattern signal, a correction information storage unit storing the correction information, and a distortion correction unit performing a correction calculation for a reproduction data signal using the correction information to generate corrected reproduction data from which the fixed distortion is removed.

摘要翻译： 记录和再现装置包括：再现信号检测单元，其再现先前记录在全息记录介质上的二维图案或记录在全息记录介质上的用户数据;参考图案存储单元，其预先存储要提供的参考图案， 校正信息生成单元将对应于再现的二维图案的再现参考图案信号与存储的参考图案进行比较，并且去除包含在再现参考图形信号中的固定失真，以产生用于再现参考的校正信息 存储校正信息的校正信息存储单元，以及使用校正信息对再现数据信号执行校正计算的失真校正单元，以产生校正后的重现值 去除固定失真的离子数据。

公开(公告)号：US20070168843A1

公开(公告)日：2007-07-19

申请号：US11394266

申请日：2006-03-30

申请人： Toshikazu Kanaoka ,  Toshihiko Morita

发明人： Toshikazu Kanaoka ,  Toshihiko Morita

IPC分类号： H03M13/03

CPC分类号： G11B20/10009 ,  G11B20/10055 ,  G11B20/10074 ,  G11B20/10083 ,  G11B20/10296 ,  G11B20/1426 ,  G11B2020/1446 ,  H03M13/41 ,  H03M13/6343

摘要： A decoder decodes a code by selecting, based on a predetermined condition, a path out of paths representing a transition of each of states in a trellis diagram. A storing unit stores, when a path at time k is selected, information on a selection history of a path selected at time prior to time (k−(a constraint length of a code)+1). A path detecting unit detects a path to be excluded from a path selection candidate, based on the information stored in the storing unit and information on a state of a transition source when a state transition occurs from time k−1 to time k.

摘要翻译： 解码器通过基于预定条件选择代表网格中的每个状态的转换的路径的路径来对码进行解码。 当选择时刻k的路径时，存储单元存储关于在时间之前（k-（代码的约束长度）+1）时选择的路径的选择历史的信息。 路径检测单元基于存储在存储单元中的信息，以及当从时刻k-1到时间k发生状态转换时关于转换源的状态的信息，检测要从路径选择候选排除的路径。

公开(公告)号：US20060215527A1

公开(公告)日：2006-09-28

申请号：US11190589

申请日：2005-07-27

申请人： Akiyoshi Uchida ,  Toshikazu Kanaoka ,  Masakazu Taguchi

发明人： Akiyoshi Uchida ,  Toshikazu Kanaoka ,  Masakazu Taguchi

IPC分类号： G11B7/00

CPC分类号： G11B7/00736 ,  G11B7/0065 ,  G11B7/00781 ,  G11B7/24044

摘要： A holographic recording medium is a medium which records and reproduces data by irradiation with an information beam and a reference beam. This medium includes a user region for recording user data; and a calibration region for storing calibration data for calibrating an element which determines a recording and reproducing characteristic of a recording and reproducing apparatus for recording and reproducing data on/from the recording medium. The calibration data stored in the calibration region includes pattern information for measuring the element determining the recording and reproducing characteristic of the recording and reproducing apparatus.

摘要翻译： 全息记录介质是通过用信息光束和参考光束照射来记录和再现数据的介质。 该介质包括用于记录用户数据的用户区域; 以及校准区域，用于存储用于校准元件的校准数据，该元件确定用于在/从记录介质上记录和再现数据的记录和再现设备的记录和再现特性。 存储在校准区域中的校准数据包括用于测量确定记录和再现设备的记录和再现特性的元件的模式信息。

公开(公告)号：US20060077830A1

公开(公告)日：2006-04-13

申请号：US11280558

申请日：2005-11-16

申请人： Toshikazu Kanaoka

发明人： Toshikazu Kanaoka

IPC分类号： G11B7/00 ,  G11B5/09

CPC分类号： G11B20/22 ,  G11B7/005 ,  G11B7/094 ,  G11B7/0956 ,  G11B7/1263 ,  G11B7/1267 ,  G11B11/10515 ,  G11B11/10576 ,  G11B11/10595 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/18 ,  G11B2020/1062 ,  G11B2020/1457

摘要： It is an object of the present invention to provide a data reproducer in which the quality of a reproduction signal is improved. A data reproducer of the present invention includes a phase-difference detecting section which obtains the cross correlation value between the head pattern in a track to be reproduced and a reproduction signal, synchronous detectors which respectively obtain the cross correlation value between the head pattern of a track adjacent to the track to be reproduced and the reproduction signal, and crosstalk value detector which obtains the direction and ratio of crosstalk in accordance with these cross correlation values. The data reproducer has a correcting function which corrects the offset and gain of a reproduction signal in accordance with a phase difference and cross correlation value obtained by the phase-difference detecting section.

公开(公告)号：US20050122885A1

公开(公告)日：2005-06-09

申请号：US11038315

申请日：2005-01-18

申请人： Toshikazu Kanaoka

发明人： Toshikazu Kanaoka

IPC分类号： G11B5/012 ,  G11B20/10 ,  G11B20/14 ,  H03L7/085 ,  H03L7/091 ,  G11B5/09

CPC分类号： G11B20/10009 ,  G11B5/012 ,  G11B7/0053 ,  G11B11/10515 ,  G11B20/10222 ,  G11B20/1403 ,  G11B20/1426 ,  H03L7/085 ,  H03L7/091

摘要： It is an object of the present invention to provide a phase difference correction apparatus and a data reproduction apparatus including a data header detection apparatus that can synchronize the phase between a clock for reproducing data and an optimum sampling point of a reproduction signal with high accuracy and thus precisely detect a header of reproduced data even in a case where the S/N ratio of a signal is low. In order to achieve the object, a data reproduction apparatus for sampling a reproduction signal reproduced from an information medium with a predetermined sample clock including an A/D converter apparatus for sampling the reproduction signal with the sample clock, a phase difference detection part for detecting a phase difference between an optimum sampling point of a sample signal sampled by the A/D converter part, and a phase difference correction apparatus including an optimum phase difference correction part for correcting a phase of a sampling point of the sample signal to an optimum phase according to the phase difference detected by the phase difference detection part so that the sample signal becomes a signal sampled at the optimum sampling point is provided.

摘要翻译： 本发明的目的是提供一种相位差校正装置和数据再现装置，该装置包括数据标题检测装置，该数据标题检测装置能够使再现数据的时钟和再现信号的最佳采样点之间的相位以高精度同步， 因此即使在信号的S / N比低的情况下也能精确地检测出再现数据的标题。 为了实现该目的，一种数据再现装置，用于对包含用于采样时钟的再现信号进行采样的A / D转换器装置的预定采样时钟从信息介质再现的再现信号进行采样;相位差检测部分，用于检测 由A / D转换器部分采样的采样信号的最佳采样点与包括用于将采样信号的采样点的相位校正到最佳相位的最佳相位差校正部分的相位差校正装置之间的相位差 根据由相​​位差检测部检测出的相位差，使得采样信号成为在最佳采样点采样的信号。

公开(公告)号：US20050018565A1

公开(公告)日：2005-01-27

申请号：US10781622

申请日：2004-02-20

申请人： Toshikazu Kanaoka

发明人： Toshikazu Kanaoka

IPC分类号： G11B7/24 ,  G11B7/005 ,  G11B7/007 ,  G11B20/10 ,  G11B20/12

CPC分类号： G11B7/24082 ,  G11B7/0053

摘要： An optical disk includes a recording area divided into annular bands and further into sectors. Each sector includes alternating grooves and lands, both serving as data-recording tracks. Each groove includes an address region in which data is recorded by in-phase double wobbles. The address region includes an address selection data recording portion and individual address data recording portions. The address selection data recording portion stores data for selecting one of the individual address data recording portions to read individual address data from the selected recording portion.

摘要翻译： 光盘包括划分成环形带并进一步分成扇区的记录区域。 每个扇区包括交替的槽和焊盘，两者都用作数据记录轨道。 每个凹槽包括通过同相双摆动来记录数据的地址区域。 地址区域包括地址选择数据记录部分和单独的地址数据记录部分。 地址选择数据记录部分存储用于选择单个地址数据记录部分之一的数据，以从所选择的记录部分读取各个地址数据。