公开(公告)号：US20130236108A1

公开(公告)日：2013-09-12

申请号：US13988655

申请日：2011-11-11

申请人： Yuma Matsuda ,  Masatsugu Ogawa ,  Masafumi Yano ,  Susumu Kawakami

发明人： Yuma Matsuda ,  Masatsugu Ogawa ,  Masafumi Yano ,  Susumu Kawakami

IPC分类号： G06K9/48

CPC分类号： G06K9/48 ,  G06K2009/484

摘要： An information representation method for representing an object or a shape includes: dividing a contour shape of an entirety or a part of the object or the shape into one or a plurality of curves; and representing the contour shape of the object or the shape by parameters including a degree of curvature and a positional relationship of each curve obtained by the dividing. Therefore, there is provided an information representation method for an object or a shape, which is capable of robust object recognition against a change in image by geometric transformations and occlusions.

摘要翻译： 用于表示对象或形状的信息表示方法包括：将对象的整体或部分的轮廓形状或形状划分为一条或多条曲线; 并且通过包括通过分割获得的每个曲线的曲率度和位置关系的参数来表示对象的轮廓形状或形状。 因此，提供了一种用于对象或形状的信息表示方法，其能够通过几何变换和闭塞对图像的变化进行鲁棒的对象识别。

公开(公告)号：US20100157749A1

公开(公告)日：2010-06-24

申请号：US12087880

申请日：2007-01-17

申请人： Masatsugu Ogawa ,  Shuichi Ohkubo

发明人： Masatsugu Ogawa ,  Shuichi Ohkubo

IPC分类号： G11B7/00 ,  G11B20/00

CPC分类号： G11B7/094 ,  G11B7/0945 ,  G11B20/10009 ,  G11B20/10111 ,  G11B20/1012 ,  G11B20/10481 ,  G11B2220/2537

摘要： In a track offset adjusting method of an information recording medium, data are recorded onto first and second tracks of an information recording medium. No data are recorded on at least one of tracks adjacent to each of the first and second tracks. After the data recording onto the first and second tracks, data are recorded onto the third track adjacent to the inner circumferential side of the first track and onto a fourth track adjacent to the outer circumferential side of the second track. Thereafter, reproduction signal qualities of the first and second tracks are calculated on the basis of reproduction signals obtained by reproducing the data recorded on said first and second tracks. The track offset is adjusted on the basis of the reproduction signal qualities of the first and second tracks.

摘要翻译： 在信息记录介质的磁道偏移调整方法中，将数据记录在信息记录介质的第一和第二磁迹上。 在与第一和第二轨道中的每一个相邻的轨道中的至少一个轨道上不记录数据。 在将数据记录到第一和第二轨道之后，将数据记录在与第一轨道的内周侧相邻的第三轨道上，并且记录到与第二轨道的外周侧相邻的第四轨道上。 此后，基于通过再现记录在所述第一和第二磁道上的数据而获得的再现信号来计算第一和第二磁道的再现信号质量。 基于第一和第二轨道的再现信号质量来调整轨道偏移。

公开(公告)号：US07636287B2

公开(公告)日：2009-12-22

申请号：US10822374

申请日：2004-04-12

申请人： Shuichi Ohkubo ,  Hiromi Honma ,  Masatsugu Ogawa ,  Masaki Nakano ,  Toshiaki Iwanaga ,  Yutaka Kashihara ,  Yuji Nagai ,  Akihito Ogawa

发明人： Shuichi Ohkubo ,  Hiromi Honma ,  Masatsugu Ogawa ,  Masaki Nakano ,  Toshiaki Iwanaga ,  Yutaka Kashihara ,  Yuji Nagai ,  Akihito Ogawa

IPC分类号： G11B7/005 ,  G11B7/00

CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/1012 ,  G11B20/10296 ,  G11B20/10481 ,  G11B2020/1288 ,  G11B2220/2541

摘要： Reproduced signals are equalized by the least square technique by using a predetermined number of data samples binarized by a Viterbi decoder. Even when data written on an optical disk is unknown, the data can be equalized in a stable manner and can be reproduced at a low error rate without instability factors such as divergence due to interference.

摘要翻译： 通过使用由维特比解码器二值化的预定数量的数据样本，通过最小二乘法来再现信号。 即使在光盘上写入的数据未知的情况下，数据也可以以稳定的方式进行均衡，并且能够以低错误率再现，而不会引起由于干扰引起的发散等不稳定因素。

公开(公告)号：US20090168615A1

公开(公告)日：2009-07-02

申请号：US11915424

申请日：2006-05-24

申请人： Masatsugu Ogawa

发明人： Masatsugu Ogawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/00718 ,  G11B7/094 ,  G11B7/0956 ,  G11B7/1267

摘要： A high-density land/groove recording method is provided which records random data used for parameter adjustment on either adjacent three grooves or adjacent three lands of an optical disk. The recorded data is reproduced, the radial tilt is first adjusted based on PRSNR of the reproduction data, and thereafter parameters are adjusted one by one in the order of focus offset, recording power and track offset. The recording power may be adjusted first.

摘要翻译： 提供了一种高密度纹间/凹槽记录方法，其记录用于在相邻的三个凹槽或相邻的光盘的三个平台之间进行参数调整的随机数据。 记录的数据被再现，首先根据再现数据的PRSNR调整径向倾斜，然后以聚焦偏移，记录功率和轨道偏移的顺序逐个调整参数。 记录功率可以先调整。

公开(公告)号：US20090059747A1

公开(公告)日：2009-03-05

申请号：US11817464

申请日：2006-03-14

申请人： Masaki Nakano ,  Masatsugu Ogawa ,  Shigeru Shimonou

发明人： Masaki Nakano ,  Masatsugu Ogawa ,  Shigeru Shimonou

IPC分类号： G11B20/00

CPC分类号： G11B7/1267 ,  G11B7/00718 ,  G11B7/0956

摘要： [PROBLEMS] To reduce the number of recording condition adjustment steps before information recording, simplify the recording condition adjustment procedure, and perform stable and accurate recoding condition adjustment of an information recording medium.[MEANS FOR SOLVING PROBLEMS] When recording information on a recording medium, the recording condition is optimized. Next, under the optimized recording condition, a signal is recorded in a prescribed area of the information recording medium. Next, by using the signal recorded under the optimized recording condition, a part of the recording condition for the next and later is adjusted. Thus, a part of the recording condition is adjusted by using the signal recorded under the optimized recording condition and accordingly, it is possible to rapidly perform the recording condition adjustment before information recording.

摘要翻译： [问题]为了减少信息记录前的记录条件调整步骤的数量，简化记录条件调整程序，并且执行信息记录介质的稳定和准确的记录条件调整。 解决问题的方法当在记录介质上记录信息时，优化记录条件。 接下来，在优化的记录条件下，信号被记录在信息记录介质的规定区域中。 接下来，通过使用在优化记录条件下记录的信号，调整下一个和稍后的记录条件的一部分。 因此，通过使用在优化的记录条件下记录的信号来调整记录条件的一部分，因此，可以在信息记录之前快速执行记录条件调整。

公开(公告)号：US20060181981A1

公开(公告)日：2006-08-17

申请号：US11136863

申请日：2005-05-25

申请人： Naoto Yamamoto ,  Shigeru Shimonou ,  Masatsugu Ogawa

发明人： Naoto Yamamoto ,  Shigeru Shimonou ,  Masatsugu Ogawa

IPC分类号： G11B5/09

CPC分类号： G11B27/32 ,  G11B20/10 ,  G11B20/1217 ,  G11B2020/1265 ,  G11B2020/1267 ,  G11B2020/1285 ,  G11B2020/1292 ,  G11B2220/218 ,  G11B2220/2562

摘要： An optical disc recording system includes a host apparatus configured to issue commands; and an optical disc recording apparatus configured to carry out a process corresponding to each of the commands, and to reply a response data to the command to the host apparatus. The host apparatus issues a record command as one of the commands to record a record data in an optical disc medium, and an optical disc recording apparatus records the record data in a data area in a predetermined format in response to the record command, wherein the optical disc comprises the data area and a first control data recording area. The optical disc recording apparatus additionally sets each of second control data recording areas in the data area in association with a command from the host apparatus as one of the commands, and a record status control data is recorded in the first or second control data recording area to indicate record status of the record data. At least a part of a second control data recording area associated data with at least one of the second control data recording areas is shared by the host apparatus and the optical disc recording apparatus.

公开(公告)号：US20050270939A1

公开(公告)日：2005-12-08

申请号：US11143996

申请日：2005-06-03

申请人： Yutaka Kashihara ,  Akihito Ogawa ,  Naoki Morishita ,  Masaki Nakano ,  Masatsugu Ogawa ,  Shuichi Ookubo ,  Toshiaki Iwanaga

发明人： Yutaka Kashihara ,  Akihito Ogawa ,  Naoki Morishita ,  Masaki Nakano ,  Masatsugu Ogawa ,  Shuichi Ookubo ,  Toshiaki Iwanaga

IPC分类号： G11B7/0045 ,  G11B5/09 ,  G11B7/004 ,  G11B7/125 ,  G11B7/24

CPC分类号： G11B7/00456 ,  G11B7/1263 ,  G11B7/1267 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/1012 ,  G11B20/10481 ,  G11B2220/2537

摘要： In an optical disk system using a PRML identification system, a method for deriving an optimum recording wave in a short period of time is provided. Parameters of the recording wave are adjusted by using an evaluation value obtained by a signal evaluation method which is suitable for the PRML identification system as an index. In this case, as a parameter adjusting method, a plurality of adjusting methods are utilized.

摘要翻译： 在使用PRML识别系统的光盘系统中，提供了用于在短时间内导出最佳记录波的方法。 通过使用通过适合于PRML识别系统的信号评估方法获得的评估值作为指标来调整记录波的参数。 在这种情况下，作为参数调整方法，利用多种调整方法。

公开(公告)号：US06256286B1

公开(公告)日：2001-07-03

申请号：US09024296

申请日：1998-02-17

申请人： Masatsugu Ogawa

发明人： Masatsugu Ogawa

IPC分类号： G11B700

CPC分类号： G11B7/26 ,  G11B7/00557

摘要： In a method for initializing an information recording surface of a phase change recording medium by radiating laser light onto the information recording surface, the laser light power is set to a first power which is in the condition of power around at which crystallization of the information recording surface is about to occur, this laser light being repeatedly radiated onto the part that is to be initialized.

摘要翻译： 在通过在信息记录表面上照射激光来初始化相变记录介质的信息记录表面的方法中，将激光功率设定为处于功率周围状态的第一功率，在该条件下，信息记录结晶 表面即将发生，该激光被重复地辐射到要被初始化的部分上。

公开(公告)号：US6094405A

公开(公告)日：2000-07-25

申请号：US188199

申请日：1998-11-09

申请人： Masatsugu Ogawa

发明人： Masatsugu Ogawa

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/0055 ,  G11B7/006 ,  G11B7/125 ,  G11B7/26 ,  G11B7/30 ,  G11B13/00

CPC分类号： G11B7/126 ,  G11B7/26 ,  G11B7/006

摘要： In a first step, a phase change recording film is irradiated with a laser beam at two different power levels provided alternately, one being such as to cause fusion of the phase change recording film, the other being such as to cause crystallization of the recording film. Subsequently, in a second step, the recording film is irradiated with a laser beam at a power level such as to cause crystallization of the recording film.

摘要翻译： 在第一步骤中，以交替设置的两个不同的功率电平用激光束照射相变记录膜，一个是相变记录膜的熔化，另一个是引起记录膜的结晶 。 随后，在第二步骤中，用激光束照射记录膜，以使记录膜结晶化。

公开(公告)号：US5798987A

公开(公告)日：1998-08-25

申请号：US839596

申请日：1997-04-15

申请人： Masatsugu Ogawa

发明人： Masatsugu Ogawa

IPC分类号： G11B11/10 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/125 ,  G11B11/105 ,  G11B11/00

CPC分类号： G11B7/127 ,  G11B11/10578 ,  G11B11/10543 ,  G11B11/10584 ,  G11B7/007

摘要： A magneto-optical disk drive comprises a magneto-optical disk having a land area and a groove area both for recording data therein. The disk drive emits a laser beam having a first wavelength and including a TM wave and a TE wave. Each of slope wall width of the groove, groove or land width and groove depth has a specified value defined with respect to the first wavelength for obtaining a low noise output. The preferred width for the slope walls is above 1/4n or 1/8n to 1/6n of the first wavelength and preferred groove depth is 1/8n to 1/5n of the first wave length, wherein n is a refractive index for the laser beam.

摘要翻译： 磁光盘驱动器包括具有用于在其中记录数据的平台区域和凹槽区域的磁光盘。 磁盘驱动器发射具有第一波长并包括TM波和TE波的激光束。 槽，槽或焊盘宽度和沟槽深度的每个斜壁宽度具有相对于第一波长限定的用于获得低噪声输出的指定值。 斜坡的优选宽度高于第一波长的+ E，fra 1/4 + EE n或+ E，fra 1/8 + EE n至+ E，fra 1/6 + EE n，优选的凹槽深度 + E，fra 1/8 + EE n至+ E，fra 1/5 + EE n的第一波长，其中n是激光束的折射率。