公开(公告)号：US07372797B2

公开(公告)日：2008-05-13

申请号：US10628687

申请日：2003-07-28

申请人： Toshikazu Kanaoka ,  Masakazu Taguchi

发明人： Toshikazu Kanaoka ,  Masakazu Taguchi

IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B7/00

CPC分类号： G11B7/005 ,  G11B5/012 ,  G11B5/09 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10222 ,  G11B20/10425 ,  G11B27/3027 ,  H03L7/00

摘要： A data reproduction device for sampling a signal reproduced from a recording medium based on a synchronization clock signal synchronized with the reproduced signal includes: an analog-to-digital conversion part converting the reproduced signal into a first digital signal based on a first clock signal; an interpolation part interpolating the first digital signal so that the first digital signal is equalized with a second digital signal sampled based on a second clock signal having a frequency n times the frequency of the first clock signal; an optimum phase detection part receiving the output of the interpolation part and detecting the phase error between the optimum point of the reproduced signal and the synchronization clock signal; a phase correction part correcting the phase of the reproduced signal based on the phase error; and an information data start detection part detecting the start of information data based on the phase error.

摘要翻译： 根据与再现信号同步的同步时钟信号，对从记录介质再现的信号进行采样的数据再现装置包括：模数转换部分，基于第一时钟信号将再现信号转换为第一数字信号; 内插部分内插第一数字信号，使得第一数字信号与基于具有n倍于第一时钟信号频率的频率的第二时钟信号采样的第二数字信号相等; 接收内插部分的输出并检测再生信号的最佳点与同步时钟信号之间的相位误差的最佳相位检测部分; 相位校正部，基于相位误差校正再现信号的相位; 以及信息数据开始检测部，其基于相位误差来检测信息数据的开始。

公开(公告)号：US07345799B2

公开(公告)日：2008-03-18

申请号：US11145824

申请日：2005-06-06

申请人： Toshikazu Kanaoka

发明人： Toshikazu Kanaoka

IPC分类号： G02B5/32

CPC分类号： G03H1/02 ,  G03H1/0256 ,  G03H1/26 ,  G03H2001/026 ,  G03H2250/33 ,  G03H2250/38 ,  G11B7/0065 ,  G11B7/00781 ,  G11B7/24033 ,  G11B7/24044

摘要： An optical recording medium which comprises a holographic recording layer on which information is recorded by means of holography, a light shield member fixed to at least one of main surfaces of the holographic recording layer, a control electrode for controlling a light transmission state of the light shield member, wherein, the light shield member has a plurality of pixels obtained by dividing the light shield member on a recording unit region basis, and the light transmission state can be controlled pixel by pixel.

摘要翻译： 一种光记录介质，包括通过全息记录信息的全息记录层，固定在全息记录层的至少一个主表面上的遮光部件，用于控制光的透光状态的控制电极 屏蔽构件，其中，所述遮光构件具有通过在所述记录单元区域基础上划分所述遮光构件而获得的多个像素，并且可以逐个像素地控制所述光透射状态。

公开(公告)号：US20070143657A1

公开(公告)日：2007-06-21

申请号：US11385493

申请日：2006-03-21

申请人： Toshikazu Kanaoka ,  Toshihiko Morita

发明人： Toshikazu Kanaoka ,  Toshihiko Morita

IPC分类号： H03M13/00

CPC分类号： H03M13/6343 ,  H03M13/033 ,  H03M13/095 ,  H03M13/11 ,  H03M13/1162 ,  H03M13/118 ,  H03M13/1185 ,  H03M13/1188 ,  H03M13/1197 ,  H03M13/152

摘要： An information sequence having a code length of N (N=K+M), where K is information length and M is parity length, is encoded into a code sequence by using an LDPC code. The LDPC code is generated based on a matrix H, with M rows and N columns. The matrix H includes a check matrix H2 and a check matrix H1. The check matrix H2 has M rows and M columns, it is a cyclic permutation matrix, and an inverse matrix exists for the check matrix H2, and its column weight is 3. The check matrix H1 has M rows and K columns.

摘要翻译： 具有码长N（N = K + M）的信息序列，其中K是信息长度，M是奇偶长度，通过使用LDPC码被编码成码序列。 基于具有M行和N列的矩阵H生成LDPC码。 矩阵H包括校验矩阵H 2 2和校验矩阵H 1 1。 校验矩阵H 2具有M行和M列，它是循环置换矩阵，并且对于校验矩阵H 2 2存在逆矩阵，并且其列权重是 支票矩阵H 1具有M行和K列。

公开(公告)号：US20070076281A1

公开(公告)日：2007-04-05

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： G03H1/28

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：US20070064289A1

公开(公告)日：2007-03-22

申请号：US11494861

申请日：2006-07-28

申请人： Akiyoshi Uchida ,  Toshikazu Kanaoka

发明人： Akiyoshi Uchida ,  Toshikazu Kanaoka

IPC分类号： G03H1/02

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： A holographic recording medium according to the present invention includes a holographic material layer in which information is to be recorded by irradiating the same region with information light corresponding to the information to be recorded and reference light to read the recorded information. The holographic material layer is divided into a plurality of recording zones by a plurality of light shielding walls. The light shielding wall is formed of a material which does not transmit bleaching light to be applied to the recording zone in which a recording process has been performed and the recorded information is to be fixed.

摘要翻译： 根据本发明的全息记录介质包括通过用与要记录的信息相对应的信息光和参考光照射相同区域来记录信息的全息材料层，以读取记录的信息。 全息材料层被多个遮光壁分成多个记录区。 遮光壁由不传输漂白光的材料形成，以施加到已经执行记录处理的记录区域并且记录的信息被固定。

公开(公告)号：US07133170B1

公开(公告)日：2006-11-07

申请号：US11321159

申请日：2005-12-28

申请人： Akiyoshi Uchida ,  Toshikazu Kanaoka

发明人： Akiyoshi Uchida ,  Toshikazu Kanaoka

IPC分类号： G03H1/02

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： A holographic recording medium according to the present invention includes a holographic material layer in which information is to be recorded by irradiating the same region with information light corresponding to the information to be recorded and reference light to read the recorded information. The holographic material layer is divided into a plurality of recording zones by a plurality of light shielding walls. The light shielding wall is formed of a material which does not transmit bleaching light to be applied to the recording zone in which a recording process has been performed and the recorded information is to be fixed.

摘要翻译： 根据本发明的全息记录介质包括通过用与要记录的信息相对应的信息光和参考光照射相同区域来记录信息的全息材料层，以读取记录的信息。 全息材料层被多个遮光壁分成多个记录区。 遮光壁由不传输漂白光的材料形成，以施加到已经执行记录处理的记录区域并且记录的信息被固定。

公开(公告)号：US20060203690A1

公开(公告)日：2006-09-14

申请号：US11196055

申请日：2005-08-03

申请人： Akiyoshi Uchida ,  Toshikazu Kanaoka

发明人： Akiyoshi Uchida ,  Toshikazu Kanaoka

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G11B7/0945 ,  G11B7/1356

摘要： A recording and reproducing apparatus according to the present invention includes a light source for emitting a light beam, a spatial modulating part for modulating the light beam to create information light, using spatial information associated with page data A to be recorded on a holographic recording medium, an optical-path changing part for changing an optical path of the information light created by the spatial modulating part, a light detecting part for receiving the information light having the optical path changed by the optical-path changing part, and a diagnosis part for inspecting operations of recording and reproducing components including the spatial modulating part and the light detecting part, using the page data A and page data B obtained from the information light received by the light detecting part.

摘要翻译： 根据本发明的记录和再现装置包括用于发射光束的光源，用于调制光束以产生信息光的空间调制部分，使用与要记录在全息记录介质上的页数据A相关联的空间信息 ，用于改变由空间调制部分产生的信息光的光路的光路改变部分，用于接收由光路改变部分改变的具有光路的信息光的光检测部分，以及用于 使用从光检测部接收的信息光获得的页数据A和页数据B来检查包括空间调制部分和光检测部分的记录和再现部件的操作。

公开(公告)号：US08151162B2

公开(公告)日：2012-04-03

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： H03M13/00

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）位将数据串交织成n（n≥2）个数据串块，并加上纠错码奇偶校验; 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：US08102615B2

公开(公告)日：2012-01-24

申请号：US12409636

申请日：2009-03-24

申请人： Akihiro Itakura ,  Toshikazu Kanaoka

发明人： Akihiro Itakura ,  Toshikazu Kanaoka

IPC分类号： G11B5/09

CPC分类号： G11B5/59688 ,  G11B5/5526

摘要： A data storage apparatus includes: a medium for storing data having synchronization marks and data blocks, the synchronization mark and the data block being allocated alternately in the circumference direction of the medium; a head writing data into or reading out data from the medium; and a processor for executing a process including: reading out synchronization marks, measuring time for the head to pass through each of the data blocks based on signals read out from each of the synchronization marks in the circumference direction, generating write/read clock for each of the data blocks, which is continuously changing in speed, by calculating difference in time for the head to pass through the each one of the data blocks and its adjacent one of the blocks on the basis of the time measured, and writing data into or reading out data from the medium in synchronization with the write/read clock.

摘要翻译： 数据存储装置包括：用于存储具有同步标记和数据块的数据的介质，所述同步标记和所述数据块在所述介质的圆周方向上交替地分配; 将数据写入或从介质读出数据的头; 以及用于执行处理的处理器，包括：读出同步标记，根据从圆周方向上的每个同步标记读出的信号测量头部经过每个数据块的时间，为每个数据块生成写入/读取时钟 通过根据测量的时间计算头部经过数据块和其相邻块之一的每一个数据块的时间差，并将数据写入或 与写/读时钟同步从介质读出数据。

公开(公告)号：US20090307561A1

公开(公告)日：2009-12-10

申请号：US12385070

申请日：2009-03-30

申请人： Toshikazu KANAOKA

发明人： Toshikazu KANAOKA

IPC分类号： H03M13/27 ,  G06F11/10

CPC分类号： G11B20/1866 ,  G11B20/10296 ,  G11B20/1833 ,  G11B2220/2516 ,  H03M13/27 ,  H03M13/2936

摘要： A decoding device includes a decoding unit that decodes an information data string including an error-correction parity for each interleaved data string obtained by interleaving the information data string for each symbol to generate a decoded data string; an error-correcting decoding unit that interleaves the decoded data string to perform error-correcting decoding, de-interleaves the interleaved decoded data strings after error-correcting decoding when all errors in the decoded data strings are corrected, and generates a decoded data string after error correction when errors are remained; and an event error-correcting unit that corrects data in the decoded data string for the merge section when an error-corrected portion in the decoded data string obtained by comparing the decoded data string and the decoded data string after error correction is in an event information string indicative of a merge section in the decoded data string.

摘要翻译： 解码装置包括解码单元，其对通过交织每个符号的信息数据串而获得的每个交织数据串包括纠错奇偶校验的信息数据串，以生成解码数据串; 错误校正解码单元，其对经解码的数据串进行交织以进行纠错解码，在对解码数据串中的所有错误进行了校正后对纠错解码后的交错解码数据串进行解交织，并且生成解码后的数据串， 当错误仍然存​​在时进行纠错; 以及事件纠错单元，当通过比较解码数据串和纠错后的解码数据串获得的解码数据串中的纠错部分处于事件信息中时，校正用于合并部分的解码数据串中的数据 指示解码数据串中的合并部分的字符串。