公开(公告)号：US20110205876A1

公开(公告)日：2011-08-25

申请号：US13126243

申请日：2009-10-01

申请人： Yoshihisa Adachi ,  Shigemi Maeda ,  Hideharu Tajima ,  Ikuo Nakano ,  Tetsuya Okumura ,  Takashi Arimoto ,  Noboru Iwata ,  Tetsuya Hayashi ,  Atsushi Etoh

发明人： Yoshihisa Adachi ,  Shigemi Maeda ,  Hideharu Tajima ,  Ikuo Nakano ,  Tetsuya Okumura ,  Takashi Arimoto ,  Noboru Iwata ,  Tetsuya Hayashi ,  Atsushi Etoh

IPC分类号： G11B20/10 ,  G11B7/26

CPC分类号： G11B7/0079 ,  H04N5/85

摘要： The present invention provides an optical information recording medium (2) capable of shortening a time from acquiring identification information to starting a program etc. recorded on an ROM layer. The optical information recording medium (2) includes two or more information recording layers, information of each of the two or more information recording layers is readable by emitting reproducing light thereto, at least one of said two or more information recording layers is an RE/R layer (4), at least another one of said two or more information recording layers is an ROM layer (5), and the RE/R layer (4) includes an identification information recording region (41), and an interlayer-movement Flag is recorded on the identification information recording region (41).

摘要翻译： 本发明提供一种光信息记录介质（2），其能够缩短从获取记录在ROM层上的识别信息到开始程序等的时间。 光信息记录介质（2）包括两个或更多个信息记录层，两个或多个信息记录层中的每一个的信息可通过发射再现光来读取，所述两个或多个信息记录层中的至少一个是RE / R层（4）中，所述两个或多个信息记录层中的至少另一个是ROM层（5），RE / R层（4）包括识别信息记录区域（41），层间移动 标志被记录在识别信息记录区域（41）上。

公开(公告)号：US07683968B2

公开(公告)日：2010-03-23

申请号：US11654642

申请日：2007-01-18

申请人： Tatsuhiko Hagihara ,  Naoyuki Nishikawa ,  Akihiro Maejima ,  Nobuyoshi Maezono ,  Tetsuya Okumura

发明人： Tatsuhiko Hagihara ,  Naoyuki Nishikawa ,  Akihiro Maejima ,  Nobuyoshi Maezono ,  Tetsuya Okumura

IPC分类号： G02B13/16 ,  H04N5/225

CPC分类号： G02B27/0006 ,  B08B1/002 ,  G03B17/02

摘要： An image-taking apparatus which captures object light to take an image includes: an optical device through which the object light is transmitted; an image pickup device which generates an image signal representing an object image; and a cleaning section which is deformed by receiving a predetermined stimulus, the cleaning section being brought into contact with, and being separated from, the optical device and/or the image pickup device to clean substances attached to the contact portion. The apparatus further includes: a stimulus application section which applies the stimulus to the cleaning section; and a control section which controls the deformation of the cleaning section by controlling the stimulus applied from the stimulus application section, and which thus causes the cleaning section to clean the contact portion.

摘要翻译： 拍摄物体拍摄图像的拍摄装置包括：透过物体光的光学装置; 图像拾取装置，其生成表示对象图像的图像信号; 以及通过接收预定的刺激而变形的清洁部，所述清洁部与所述光学装置和/或所述图像拾取装置接触并且与所述图像拾取装置分离，以清洁附着到所述接触部分的物质。 该装置还包括：将刺激施加到清洁部的刺激施加部; 以及控制部，其通过控制从刺激施加部施加的刺激来控制清洁部的变形，并且由此使得清洁部清洁接触部。

公开(公告)号：US20050018320A1

公开(公告)日：2005-01-27

申请号：US10895084

申请日：2004-07-21

申请人： Tetsuya Okumura

发明人： Tetsuya Okumura

IPC分类号： G02B7/02

CPC分类号： G02B7/026

摘要： A plastic lens is fixedly held in precise position a lens holder by cramming a deformable retaining ring between a front collar and a periphery of the plastic lens loosely put in an annular mounting space formed in the lens holder and crushing the front collar against the retaining ring so as thereby to rivet the plastic lens to the lens holder.

公开(公告)号：US06674701B2

公开(公告)日：2004-01-06

申请号：US10033319

申请日：2001-12-27

申请人： Tetsuya Okumura ,  Shigemi Maeda

发明人： Tetsuya Okumura ,  Shigemi Maeda

IPC分类号： G11B700

CPC分类号： G11B7/126 ,  G11B7/00 ,  G11B7/005 ,  G11B7/00745 ,  G11B7/08505

摘要： By adding a predetermined offset value which is not less than 0 to, to the value of a readout power at a time when readout power control operations are temporarily suspended, i.e., at a time when an optical head initiates a seek operation, with an adder, this latter value being stored in a readout power value storage circuit, because an optical recording medium readout apparatus makes it possible to cause the value of the readout power at the time when readout power control operations resume, i.e., at the time of completion of the seek operation performed by the optical head, to avoid abnormal power domains in which change in amplitude ratio with respect to change in readout power is not monotonically decreasing, it is made possible to avoid abnormal conditions such as occurrence of lag in response during readout power control operations.

摘要翻译： 通过在暂时停止读出功率控制操作时，即在光头启动寻道操作的时刻，向加法器添加不小于0的预定偏移值，并将其与读出功率的值相加， ，后一个值被存储在读出功率值存储电路中，因为光学记录介质读出装置使得可以使读出功率控制操作恢复时的读出功率的值即在完成时 通过光头执行的寻道操作，为了避免相对于读出功率变化的振幅比变化的异常功率域不是单调减少，可以避免在读出功率期间发生响应滞后等异常情况 控制操作。

公开(公告)号：US20120002514A1

公开(公告)日：2012-01-05

申请号：US13138519

申请日：2010-02-22

申请人： Atsushi Etoh ,  Tetsuya Okumura ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshihisa Adachi ,  Tetsuya Hayashi ,  Yasuhiro Harada ,  Takashi Arimoto ,  Ikuo Nakarno ,  Masaki Yamamoto ,  Hirohisa Yamada

发明人： Atsushi Etoh ,  Tetsuya Okumura ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshihisa Adachi ,  Tetsuya Hayashi ,  Yasuhiro Harada ,  Takashi Arimoto ,  Ikuo Nakarno ,  Masaki Yamamoto ,  Hirohisa Yamada

IPC分类号： G11B21/08

CPC分类号： G11B7/00736 ,  G11B7/08511 ,  G11B7/24038 ,  G11B19/127 ,  G11B2007/0013 ,  G11B2220/235

摘要： An invention disclosed includes a layer number obtaining section (222) for determining which information storage layer (L1) has been accessed and a layer type identifying section (223) for identifying a type of the information storage layer (L1) determined by the layer number obtaining section (222). With the configuration, even in a case where an information recording and reproducing apparatus accesses an information storage layer different from an intended information storage layer by false operation or the like, it is still possible to dissolve mismatching between a recording or reproduction control scheme being set up and a recording or reproduction control scheme suitable for the information storage layer thus accessed.

摘要翻译： 所公开的发明包括用于确定已经访问了哪个信息存储层（L1）的层号获取部分（222）和用于识别由层号确定的信息存储层（L1）的类型的层类型识别部分（223） 获取部分（222）。 利用这种配置，即使在信息记录和再现装置通过错误操作等访问与预期信息存储层不同的信息存储层的情况下，仍然可以解决设置的记录或再现控制方案之间的不匹配 以及适合于如此访问的信息存储层的记录或再现控制方案。

公开(公告)号：US07654757B2

公开(公告)日：2010-02-02

申请号：US11206136

申请日：2005-08-18

申请人： Tetsuya Okumura

发明人： Tetsuya Okumura

IPC分类号： G03B9/02

CPC分类号： G03B29/00 ,  G03B9/04

摘要： A diaphragm comprising a single plate, the single plate comprising: a first plate portion having an aperture; and a second plate portion formed at an outer side of the first plate portion, wherein a first thickness of the first plate portion is thinner than a second thickness of the second plate portion.

摘要翻译： 一种包括单板的隔膜，所述单板包括：具有孔的第一板部分; 以及形成在所述第一板部的外侧的第二板部，所述第一板部的第一厚度比所述第二板部的第二厚度薄。

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：US07194674B2

公开(公告)日：2007-03-20

申请号：US10625853

申请日：2003-07-22

申请人： Tetsuya Okumura ,  Shigemi Maeda

发明人： Tetsuya Okumura ,  Shigemi Maeda

IPC分类号： H03K5/125

CPC分类号： H04L25/03038 ,  G11B7/1263 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10101 ,  G11B20/10481 ,  H04L2025/03617

摘要： The waveform equalizing device includes: an FIR filter for generating an equalized signal pattern y(i, n) on the basis of equalization of a waveform of the reproduced signal pattern u(i, n); a Viterbi decoding circuit for detecting a path metric difference s(n) between a correct path determined as a survivor path and an error path which fails to survive the correct path in Viterbi decoding based on the equalized signal pattern y(i, n); a target register for setting a target value ds for the path metric difference s(n); and a tap coefficients update circuit for adapting the equalization according to an error of the detected path metric difference from the target value. The tap coefficients update circuit adapts equalization properties so that the mean square error is minimized, thereby achieving a satisfactory result in lowering the error rate.

摘要翻译： 波形均衡装置包括：FIR滤波器，用于基于再现信号模式u（i，n）的波形的均衡生成均衡信号模式y（i，n）; 维特比解码电路，用于基于均衡的信号模式y（i，n）来检测确定为幸存路径的正确路径和在维特比解码中不能存活正确路径的错误路径之间的路径度量差s（n）; 用于设置路径度量差s（n）的目标值ds的目标寄存器; 以及抽头系数更新电路，用于根据检测到的路径度量差与目标值的误差来适配均衡。 抽头系数更新电路适应均衡特性，使得均方误差最小化，从而在降低误码率方面实现令人满意的结果。

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。

公开(公告)号：US06900953B2

公开(公告)日：2005-05-31

申请号：US10895084

申请日：2004-07-21

申请人： Tetsuya Okumura

发明人： Tetsuya Okumura

IPC分类号： G02B7/02

CPC分类号： G02B7/026

摘要： A plastic lens is fixedly held in precise position a lens holder by cramming a deformable retaining ring between a front collar and a periphery of the plastic lens loosely put in an annular mounting space formed in the lens holder and crushing the front collar against the retaining ring so as thereby to rivet the plastic lens to the lens holder.

摘要翻译： 塑料透镜通过在塑料透镜的前轴环和周边之间挤压可变形的保持环而被固定地保持在精确的位置，该可变形的保持环松动地放置在形成在镜头保持器中的环形安装空间中，并将前轴环压靠在保持环上 从而将塑料透镜铆接到透镜架上。