公开(公告)号：US07564756B2

公开(公告)日：2009-07-21

申请号：US10938146

申请日：2004-09-10

申请人： Jun Akiyama

发明人： Jun Akiyama

IPC分类号： G11B7/00

CPC分类号： G11B20/18 ,  G11B7/0053 ,  G11B7/00736 ,  G11B2020/10972

摘要： A reproducing device includes a detection circuit and an integration circuit. The detection circuit detects a push-pull signal PP. The integration circuit carries out integration processing with respect to one or greater frames of the push-pull signal, and carries out binarization processing with respect to integration results thus obtained, thereby detecting sub data. In the integration circuit, the more the frames to be used for detecting sub data is, the higher the accuracy of the detected sub data is. The reproducing device further includes a control circuit for controlling the total number of the frames to be used for generating valid sub data in the integration circuit. The control circuit controls the total number of the frames in accordance with a result of an error correction made by an error correction circuit.

摘要翻译： 再现装置包括检测电路和积分电路。 检测电路检测推挽信号PP。 积分电路相对于推挽信号的一个或多个帧进行积分处理，并对所得到的积分结果进行二值化处理，从而检测子数据。 在积分电路中，用于检测子数据的帧越多，检测到的子数据的精度越高。 再现装置还包括控制电路，用于控制用于在积分电路中产生有效子数据的帧的总数。 控制电路根据由纠错电路进行的纠错的结果来控制帧的总数。

公开(公告)号：US20090180363A1

公开(公告)日：2009-07-16

申请号：US11988513

申请日：2006-06-21

申请人： Jun Akiyama

发明人： Jun Akiyama

IPC分类号： G11B20/10 ,  H03M13/05 ,  G06F11/22

CPC分类号： G11B7/00736 ,  G11B27/329 ,  G11B2220/2537

摘要： A storage medium managing device is provided which can employ a set of management information containing suitable information from a plural sets of management information contained in the storage medium. An optical disc apparatus (1) manages an optical disc (2) having a plurality of management areas for containing management information with which data is managed and which is recorded in the management areas in a predetermined sequence. The apparatus includes a management information retrieving section (52) for reading the management information in the same sequence as the predetermined recording sequence to retrieve primary management information which is management information that is first retrieved normally.

摘要翻译： 提供了一种存储介质管理装置，其可以从包含在存储介质中的多组管理信息中采用包含合适信息的一组管理信息。 光盘装置（1）管理具有多个管理区域的光盘（2），用于包含管理数据的管理信息，并以预定的顺序记录在管理区域中。 该装置包括管理信息检索部分（52），用于以与预定记录序列相同的顺序读取管理信息，以检索作为正常检索的管理信息的主管理信息。

公开(公告)号：US06392970B1

公开(公告)日：2002-05-21

申请号：US09129191

申请日：1998-07-23

申请人： Hiroshi Fuji ,  Shigemi Maeda ,  Tomoyuki Miyake ,  Yasuo Nakata ,  Nobuo Ogata ,  Jun Akiyama ,  Toshiharu Inui ,  Yoshihiro Sekimoto ,  Hideaki Sato

发明人： Hiroshi Fuji ,  Shigemi Maeda ,  Tomoyuki Miyake ,  Yasuo Nakata ,  Nobuo Ogata ,  Jun Akiyama ,  Toshiharu Inui ,  Yoshihiro Sekimoto ,  Hideaki Sato

IPC分类号： G11B509

CPC分类号： G11B7/126 ,  G11B7/005 ,  G11B7/00745 ,  G11B11/10515 ,  G11B11/10584 ,  G11B11/10595

摘要： A reproducing light quantity control method for an optical memory device includes the steps of (1) recording test data on an optical recording medium; (2) reproducing the test data recorded on the optical recording medium by changing a reproducing light quantity in a plurality of light quantity values; (3) measuring a quality value and a signal quantity of each of a plurality of reproducing signals from the test data; (4) selecting an optimum reproducing signal quantity from a plurality of reproducing signal quantities in accordance with quality values of the plurality of reproducing signals so as to decide a target value of reproducing signal quantity; and (5) recording the target value on a target value recording region of the optical recording medium. This method reduces the time required to obtain a target value of a reproducing signal quantity and speeds up an operation from installing of the optical recording medium to finishing of preparation for recording and reproducing.

摘要翻译： 一种用于光学存储器件的再现光量控制方法包括以下步骤：（1）将测试数据记录在光学记录介质上; （2）通过改变多个光量值中的再现光量来再现记录在光记录介质上的测试数据; （3）从测试数据测量多个再现信号中的每一个的质量值和信号量; （4）根据多个再现信号的质量值从多个再现信号量中选择最佳再现信号量，以便确定再现信号量的目标值; 和（5）将目标值记录在光学记录介质的目标值记录区上。 该方法减少了获得再现信号量的目标值所需的时间，并且加快了从安装光学记录介质到完成记录和再现准备的操作。

公开(公告)号：US6019669A

公开(公告)日：2000-02-01

申请号：US215199

申请日：1998-12-18

申请人： Ikuo Kitao ,  Yoshiyuki Hatano ,  Toshihiro Iwai ,  Takeshi Nakamura ,  Hisao Fujinuma ,  Shinji Uno ,  Jun Akiyama

发明人： Ikuo Kitao ,  Yoshiyuki Hatano ,  Toshihiro Iwai ,  Takeshi Nakamura ,  Hisao Fujinuma ,  Shinji Uno ,  Jun Akiyama

IPC分类号： B24B9/14 ,  B24B49/00 ,  B24B49/02 ,  B24B1/00 ,  B24B7/19 ,  B24B7/30

CPC分类号： B24B9/148 ,  B24B49/00 ,  B24B49/02

摘要： A lens shape measuring apparatus is provided which comprises lens rotating shafts (16, 17) for rotatably holding an uncut lens, a feeler (63, 219, 220) disposed in contact with a working locus of the front or rear surface of the lens, and a calculation/control circuit (100) for detecting a difference in surface level of the lens from a change in data measured by the feeler (63, 219, 220) and controlling the contact of the feeler with the lens.

摘要翻译： 提供了一种透镜形状测量装置，其包括用于可旋转地保持未切割透镜的透镜旋转轴（16,17），与透镜的前表面或后表面的工作轨迹接触设置的触感（63,219,220） 以及计算/控制电路（100），用于根据由触发器（63,219,220）测量的数据的变化来检测透镜的表面水平差，并控制触发器与透镜的接触。

公开(公告)号：US5712835A

公开(公告)日：1998-01-27

申请号：US834230

申请日：1997-04-15

申请人： Jun Akiyama

发明人： Jun Akiyama

IPC分类号： G11B21/08 ,  G11B7/007 ,  G11B7/085 ,  G11B7/00

CPC分类号： G11B7/00718 ,  G11B7/08517 ,  G11B7/08529 ,  G11B7/08541

摘要： An optical disk driving apparatus projects an optical beam onto a certain track on an optical disk and forms a light spot thereon. In an access operation onto an adjacent track, the light spot makes a 3-track jump from the position P1 onto the position P2, then a 2-track jump in the opposite direction onto the position P3. With such an arrangement, since the light spot moves by at least 2 tracks even in an access operation onto an adjacent track, it is possible to detect a zero crossing in a tracking error signal. Therefore, it is enabled to steadily adjust the speed of the movement of an objective lens based on the zero crossing. In consequence, a stable access to an information recording medium can be realized with an inexpensive arrangement.

摘要翻译： 光盘驱动装置将光束投射到光盘上的某个轨道上并在其上形成光点。 在对相邻轨道的访问操作中，光斑从位置P1到位置P2的3轨道跳跃，然后在相反方向上向P3位置的2轨道跳跃。 通过这样的结构，即使在相邻的轨迹上的访问操作中，由于光斑移动至少2个轨迹，因此可以检测跟踪误差信号中的过零点。 因此，能够基于过零点稳定地调整物镜的移动速度。 因此，可以以便宜的布置实现对信息记录介质的稳定访问。

公开(公告)号：US08514674B2

公开(公告)日：2013-08-20

申请号：US12588181

申请日：2009-10-07

申请人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Hideharu Tajima ,  Jun Akiyama

发明人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Hideharu Tajima ,  Jun Akiyama

IPC分类号： G11B11/00 ,  G11B7/00

CPC分类号： G11B7/1263 ,  G11B7/005

摘要： An optical information recording medium reproducing apparatus 1 includes: a signal detecting/extracting section 15 extracting, from reproduction signal data, extracted reproduction signal data corresponding to a predetermined data pattern; a calculating circuit 10 calculating, from the extracted reproduction signal data, a reproducing power control value for controlling laser light reproducing power; and a reproducing power control section 16 controlling the reproducing power based on the reproducing power control value. The predetermined data pattern is obtained from a space which is sandwiched between marks of λ/2NA or longer and is shorter than λ/4NA and/or a mark which is sandwiched between spaces of λ/2NA or longer and is shorter than λ/4NA. Therefore, even when environmental temperature changes in reproduction, the optical information recording medium reproducing apparatus capable of reproducing a super resolution medium including marks each shorter than λ/4NA optimally controls laser light reproducing power and prevents degradation of reproduction signal quality.

摘要翻译： 光信息记录介质再现装置1包括：信号检测/提取部分15，从再现信号数据提取对应于预定数据图形的提取的再现信号数据; 计算电路10根据所提取的再现信号数据计算用于控制激光再现功率的再现功率控制值; 以及再现功率控制部分16，其基于再现功率控制值来控制再现功率。 预定数据图案是从λ/ 2NA或更长的标记之间并且短于λ/ 4NA的空间和/或夹在λ/ 2NA或更长且短于λ/ 4NA的空间之间的标记获得的 。 因此，即使再生环境温度变化，能够再现包含比λ/ 4NA短的标记的超分辨率介质的光信息记录介质再现装置也能够最佳地控制激光再现功率，防止再现信号质量的劣化。

公开(公告)号：US07974168B2

公开(公告)日：2011-07-05

申请号：US12381854

申请日：2009-03-17

申请人： Jun Akiyama

发明人： Jun Akiyama

IPC分类号： G11B7/00

CPC分类号： G11B20/18 ,  G11B7/0053 ,  G11B7/00736 ,  G11B2020/10972

摘要： A reproducing device includes a detection circuit and an integration circuit. The detection circuit detects a push-pull signal PP. The integration circuit carries out integration processing with respect to one or greater frames of the push-pull signal, and carries out binarization processing with respect to integration results thus obtained, thereby detecting sub data. In the integration circuit, the more the frames to be used for detecting sub data is, the higher the accuracy of the detected sub data is. The reproducing device further includes a control circuit for controlling the total number of the frames to be used for generating valid sub data in the integration circuit. The control circuit controls the total number of the frames in accordance with a result of an error correction made by an error correction circuit.

摘要翻译： 再现装置包括检测电路和积分电路。 检测电路检测推挽信号PP。 积分电路相对于推挽信号的一个或多个帧进行积分处理，并对所得到的积分结果进行二值化处理，从而检测子数据。 在积分电路中，用于检测子数据的帧越多，检测到的子数据的精度越高。 再现装置还包括控制电路，用于控制用于在积分电路中产生有效子数据的帧的总数。 控制电路根据由纠错电路进行的纠错的结果来控制帧的总数。

公开(公告)号：US20100091638A1

公开(公告)日：2010-04-15

申请号：US12588181

申请日：2009-10-07

申请人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Hideharu Tajima ,  Jun Akiyama

发明人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Hideharu Tajima ,  Jun Akiyama

IPC分类号： G11B7/125

CPC分类号： G11B7/1263 ,  G11B7/005

摘要： An optical information recording medium reproducing apparatus 1 includes: a signal detecting/extracting section 15 extracting, from reproduction signal data, extracted reproduction signal data corresponding to a predetermined data pattern; a calculating circuit 10 calculating, from the extracted reproduction signal data, a reproducing power control value for controlling laser light reproducing power; and a reproducing power control section 16 controlling the reproducing power based on the reproducing power control value. The predetermined data pattern is obtained from a space which is sandwiched between marks of λ/2NA or longer and is shorter than λ/4NA and/or a mark which is sandwiched between spaces of λ/2NA or longer and is shorter than λ/4NA. Therefore, even when environmental temperature changes in reproduction, the optical information recording medium reproducing apparatus capable of reproducing a super resolution medium including marks each shorter than λ/4NA optimally controls laser light reproducing power and prevents degradation of reproduction signal quality.

摘要翻译： 光信息记录介质再现装置1包括：信号检测/提取部分15，从再现信号数据提取对应于预定数据图形的提取的再现信号数据; 计算电路10根据所提取的再现信号数据计算用于控制激光再现功率的再现功率控制值; 以及再现功率控制部分16，其基于再现功率控制值来控制再现功率。 从λ/ 2NA以上且短于λ/ 4NA的标记和/或夹在λ/ 2NA以上且短于λ/ 4NA的间隔的标记的空间获得预定数据图案 。 因此，即使在再现环境温度变化的情况下，能够再现包含比λ/ 4NA短的标记的超分辨率介质的光信息记录介质再现装置也能够最佳地控制激光再生功率，防止再现信号品质的劣化。

公开(公告)号：US07206351B2

公开(公告)日：2007-04-17

申请号：US10154898

申请日：2002-05-24

申请人： Tetsuya Okumura ,  Jun Akiyama ,  Tomiyuki Numata ,  Shigemi Maeda ,  Masanori Ushioda

发明人： Tetsuya Okumura ,  Jun Akiyama ,  Tomiyuki Numata ,  Shigemi Maeda ,  Masanori Ushioda

IPC分类号： H04L5/12

CPC分类号： G11B11/10595 ,  G11B7/094 ,  G11B7/0956 ,  G11B7/1267 ,  G11B11/10504 ,  G11B11/10515 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/10101 ,  G11B20/10481 ,  G11B20/1426 ,  H03M5/145 ,  H03M7/46 ,  H03M13/15 ,  H03M13/3738 ,  H03M13/39 ,  H03M13/41 ,  H03M13/6312 ,  H03M13/6343

摘要： A signal evaluation device for evaluating a decoded signal of maximum likelihood decoding includes: a differential metric circuit for finding differential metrics; comparators for judging whether a difference of differential metrics exceeds a predetermined threshold; counters for counting respective output pulses of the comparators; and a controller for finding the probability of the differential metrics falling at or below the predetermined threshold, based on the number of measured samples and the number of samples counted by the counters, and processing the probability by arithmetic operations so as to obtain an index of signal evaluation. With this arrangement, signal evaluation devices for evaluating a recording medium or a recording medium driving device can have a simpler structure and can perform evaluations in a plurality of PR modes.

摘要翻译： 用于评估最大似然解码的解码信号的信号评估装置包括：用于找到差分度量的差分度量电路; 比较器，用于判断差分度量的差异是否超过预定阈值; 用于计数比较器的各个输出脉冲的计数器; 以及控制器，用于基于所述测量样本的数量和由所述计数器计数的采样数量，找出所述差分量度落在或低于所述预定阈值的概率，并且通过算术运算来处理所述概率，从而获得 信号评估。 通过这种布置，用于评估记录介质或记录介质驱动装置的信号评估装置可以具有更简单的结构，并且可以在多个PR模式中执行评估。

公开(公告)号：US07080313B2

公开(公告)日：2006-07-18

申请号：US10307610

申请日：2002-12-02

申请人： Jun Akiyama ,  Tetsuya Okumura

发明人： Jun Akiyama ,  Tetsuya Okumura

IPC分类号： H03M13/00

CPC分类号： G11B20/10101 ,  G11B7/1267 ,  G11B11/10515 ,  G11B20/10296 ,  G11B20/18 ,  H03M13/01 ,  H03M13/39 ,  H03M13/41 ,  H03M13/6343

摘要： There is provided a signal evaluation apparatus and signal evaluation method capable of consistently measuring an accurate bit error rate regardless of the distribution profile of the difference of likelihoods (difference metrics) of data sequences. In the signal evaluation apparatus for decoding data sequences by means of maximum likelihood decoding, at least one pair of paths between which a distance has a minimum value are selected by a path selector circuit 10. With regard to the paths selected by the path selector circuit 10, a difference metric obtained by a difference metric calculator circuit 9 is statistically processed by a μ- and σ-calculator circuit 13 to calculate a bit error rate. Then, the bit error rate is corrected by correction means (11, 12, 14) on the basis of the number of measurement samples of the paths selected by the path selector circuit 10 and the number of all samples.

摘要翻译： 提供了能够一致地测量精确误码率的信号评估装置和信号评估方法，而不管数据序列的可能性差异（差异度量）的分布分布如何。 在通过最大似然解码解码数据序列的信号评估装置中，通过路径选择电路10选择距离具有最小值的至少一对路径。关于由路径选择器电路选择的路径 如图10所示，由差分度量计算器电路9获得的差值度量由μ-和Σ-计算器电路13进行统计处理，以计算误码率。 然后，基于由路径选择电路10选择的路径的测量样本的数量和所有样本的数量，通过校正装置（11,12,14）来校正误码率。