公开(公告)号：US20070140088A1

公开(公告)日：2007-06-21

申请号：US10595239

申请日：2004-09-29

申请人： Yasumori Hino ,  Takeo Kanamori

发明人： Yasumori Hino ,  Takeo Kanamori

IPC分类号： G11B20/10

CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B20/10111 ,  G11B20/10481

摘要： The evaluating apparatus of the present invention includes: a digital filter for filtering a signal in according with one or more tap coefficients of the digital filter. The evaluating apparatus further includes: a detecting section for detecting an index to be used for evaluating quality of the signal based on the filtered signal; and a controlling section for controlling the one ox more tap coefficients of the digital filter to be within a pre-determined range such that a value of the detected index includes an optimal value of the index.

摘要翻译： 本发明的评估装置包括：数字滤波器，用于根据数字滤波器的一个或多个抽头系数对信号进行滤波。 评估装置还包括：检测部分，用于基于滤波信号检测用于评估信号质量的索引; 以及控制部分，用于将所述数字滤波器的所述一个以上的抽头系数控制在预定范围内，使得所述检测到的索引的值包括所述索引的最佳值。

公开(公告)号：US07167436B2

公开(公告)日：2007-01-23

申请号：US10437180

申请日：2003-05-14

申请人： Osamu Koyama ,  Koichiro Nishikawa ,  Eiji Ueda ,  Yasumori Hino

发明人： Osamu Koyama ,  Koichiro Nishikawa ,  Eiji Ueda ,  Yasumori Hino

IPC分类号： G11B7/24 ,  G11B7/007

CPC分类号： G11B7/0938 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/24079 ,  G11B11/10565 ,  G11B11/10578 ,  G11B11/10584

摘要： The present invention provides an optical recording medium capable of detecting groove start signals and groove end signals with an inexpensive detection circuit and allowing quick, stable clock detection and tracking pull-in, which optical recording medium is constructed in such a way that the depth DG of the grooves satisfies DG/(λ/N) 1.2 FWHM, where FWHM is a full width at half maximum of the light beam in the track direction.

摘要翻译： 本发明提供了一种能够利用便宜的检测电路检测凹槽起始信号和凹槽结束信号并允许快速，稳定的时钟检测和跟踪拉入的光学记录介质，该光学记录介质被构造成使得深度D 沟槽的G'满足D＆lt; N /（λ/ N）<0.16，其中λ是光束的波长，N是衬底的折射率， 并且槽边缘和最接近其的凹坑之间的距离L S s满足L S S / S 2 1.2 FWHM，其中FWHM是光束的半高的全宽 轨道方向。

公开(公告)号：US20060146673A1

公开(公告)日：2006-07-06

申请号：US11369117

申请日：2006-03-06

申请人： Mamoru Shoji ,  Yasumori Hino ,  Takahiro Sato ,  Yuu Okada

发明人： Mamoru Shoji ,  Yasumori Hino ,  Takahiro Sato ,  Yuu Okada

IPC分类号： G11B7/12 ,  G11B5/09

CPC分类号： G11B7/1267 ,  G11B7/00456 ,  G11B7/0062

摘要： A recording power determination method for determining a recording power of an optical beam for recording data on an information storage medium includes the steps of recording test data on the information storage medium at a plurality of test recording powers; reading the test data recorded at each test recording power, generating a signal, and measuring a modulation factor of the signal corresponding to each test recording power; calculating a product of an n'th power of each test recording power and the corresponding modulation factor, thereby obtaining a plurality of products corresponding to the plurality of test recording powers, where n is a value of exponent and is a real number other than 1; calculating a first recording power based on the correlation between the plurality of test recording powers and the plurality of products; and calculating the recording power based on the first recording power.

摘要翻译： 用于确定用于在信息存储介质上记录数据的光束的记录功率的记录功率确定方法包括以多个测试记录功率将测试数据记录在信息存储介质上的步骤; 读取在每个测试记录功率下记录的测试数据，产生信号，并测量与每个测试记录功率对应的信号的调制因子; 计算每个测试记录功率的第n次功率的乘积和相应的调制因子，由此获得与多个测试记录功率对应的多个产品，其中n是指数值，并且是除1之外的实数 ; 基于所述多个测试记录功率与所述多个产品之间的相关性来计算第一记录功率; 以及基于第一记录功率计算记录功率。

公开(公告)号：US20050147391A1

公开(公告)日：2005-07-07

申请号：US11057474

申请日：2005-02-14

申请人： Tadashi Nakamura ,  Masanori Itoh ,  Yasumori Hino ,  Masafumi Shimotashiro

发明人： Tadashi Nakamura ,  Masanori Itoh ,  Yasumori Hino ,  Masafumi Shimotashiro

IPC分类号： G06F3/06 ,  G06F17/30 ,  G11B20/12 ,  G11B27/034 ,  G11B27/11 ,  G11B27/32 ,  G11B27/34 ,  G11B27/36 ,  H04N5/85 ,  H04N9/804 ,  H04N5/781

CPC分类号： G11B27/326 ,  G06F3/0601 ,  G06F17/30067 ,  G06F2003/0697 ,  G11B27/034 ,  G11B27/11 ,  G11B27/329 ,  G11B27/34 ,  G11B27/36 ,  G11B2220/213 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2525 ,  G11B2220/2562 ,  G11B2220/2575 ,  G11B2220/65 ,  H04N5/85 ,  H04N9/8042

摘要： An AV data recording apparatus and an AV data recording method are provided, in which even in the case of using the UDF file system, seeking can be minimized. The AV data recording method has file management information for managing continuous blocks on a disk as an extent, and dividing the extent into groups so as to manage the extent as a file, wherein a new directory is created on a disk, and a not recorded but allocated extent is kept as a reservation region for recording file management information.

公开(公告)号：US06836457B2

公开(公告)日：2004-12-28

申请号：US10385881

申请日：2003-03-11

申请人： Tadashi Nakamura ,  Yasumori Hino ,  Norio Miyatake

发明人： Tadashi Nakamura ,  Yasumori Hino ,  Norio Miyatake

IPC分类号： G11B509

CPC分类号： G11B20/10046 ,  G11B20/10009 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027

摘要： An information reproducing device for reproducing digital signals with an optical head from an optical disk includes a first equalizer for waveform-equalizing a reproduction signal, an adaptive learning device for renewing the equalization properties of the first waveform equalizer with an adaptation algorithm, a memory for storing a reproduction signal, a second waveform equalizer that reads signals from the memory and performs waveform equalization after an adaptive learning operation for the first waveform equalizer has been terminated, and a demodulator for demodulating the output of the second waveform equalizer. Thus, adaptive equalization processing can be performed with constantly superior equalization properties and without sacrificing data capacity.

摘要翻译： 一种用于从光盘用光学头再现数字信号的信息再现装置包括用于对再现信号进行波形均衡的第一均衡器，用于利用自适应算法更新第一波形均衡器的均衡特性的自适应学习装置， 存储再现信号的第二波形均衡器，在第一波形均衡器的自适应学习操作结束之后从存储器读取信号并执行波形均衡的第二波形均衡器，以及用于解调第二波形均衡器的输出的解调器。 因此，可以以不间断优异的均衡性能并且不牺牲数据容量来执行自适应均衡处理。

公开(公告)号：US06399227B1

公开(公告)日：2002-06-04

申请号：US08160976

申请日：1993-11-30

申请人： Yoshihiko Kudoh ,  Yasumori Hino ,  Yuuichi Fukamachi ,  Masahiro Birukawa

发明人： Yoshihiko Kudoh ,  Yasumori Hino ,  Yuuichi Fukamachi ,  Masahiro Birukawa

IPC分类号： B32B1518

CPC分类号： G11B11/10591 ,  G11B11/10523 ,  G11B11/10584 ,  Y10T428/1143 ,  Y10T428/12646 ,  Y10T428/12861 ,  Y10T428/12931 ,  Y10T428/24942 ,  Y10T428/265

摘要： A magneto-optical recording medium including a recording layer for recording information and a substrate for supporting the recording layer is disclosed. The recording layer includes: a recording magnetic film for recording the information, the recording magnetic film being formed of a perpendicular magnetic anisotropy film; a readout magnetic film for optically reading out the information, the readout magnetic film being capable of being magnetically coupled with the recording magnetic film by an exchange-coupling force; and a controlling magnetic film, provided between the recording magnetic film and the readout magnetic film, for controlling the exchange-coupling force. The controlling magnetic film has in-plane magnetic anisotropy at room temperature, thereby suppressing the exchange-coupling force between the recording magnetic film and the readout magnetic film, and when the temperature of the controlling magnetic film reaches a predetermined temperature by a readout light irradiation, the controlling magnetic film stops the suppression of the exchange-coupling force, whereby the information recorded in the recording magnetic film is magnetically transferred to the readout magnetic film.

摘要翻译： 公开了包括用于记录信息的记录层和用于支撑记录层的基板的磁光记录介质。 记录层包括：用于记录信息的记录磁性膜，记录磁性膜由垂直磁各向异性膜形成; 用于光学读出信息的读出磁膜，读出磁膜能够通过交换耦合力与记录磁性膜磁耦合; 以及设置在记录磁性膜和读出磁性膜之间的用于控制交换耦合力的控制磁性膜。 控制磁性膜在室温下具有面内的磁各向异性，从而抑制记录磁性膜与读出的磁性膜之间的交换耦合力，并且当控制磁性膜的温度通过读出光照射达到预定温度时 控制磁膜阻止了交换耦合力的抑制，由此记录在记录磁膜中的信息被磁性地传送到读出的磁性膜。

公开(公告)号：US5821004A

公开(公告)日：1998-10-13

申请号：US983128

申请日：1992-11-30

申请人： Yasumori Hino ,  Yoshihiko Kudoh ,  Masahiro Birukawa ,  Norio Miyatake

发明人： Yasumori Hino ,  Yoshihiko Kudoh ,  Masahiro Birukawa ,  Norio Miyatake

IPC分类号： G11B11/105 ,  G11B5/66

CPC分类号： G11B11/10593 ,  G11B11/10584 ,  Y10S428/90

摘要： A magneto-optical recording medium having a recording layer which has a first magnetic film, a second magnetic film and a third magnetic film in this order from a laser beam incident side, in which the second magnetic film has a perpendicular anisotropy in a temperature range from room temperature to a Curie temperature, the first magnetic film has an in-plane anisotropy when there is no temperature increase by the irradiation of a laser beam or a perpendicular anisotropy when the temperature is raised by the irradiation of the laser beam, and an exchange coupled force is present between the first magnetic film and the second magnetic film.

摘要翻译： 一种具有记录层的磁光记录介质，其具有从激光束入射侧开始依次具有第一磁性膜，第二磁性膜和第三磁性膜，其中第二磁性膜在温度范围内具有垂直各向异性 从室温到居里温度时，当通过激光束的照射升高温度时，通过激光束的照射或垂直各向异性不存在温度升高时，第一磁性膜具有面内各向异性，并且 交换耦合力存在于第一磁性膜和第二磁性膜之间。

公开(公告)号：US5724338A

公开(公告)日：1998-03-03

申请号：US712804

申请日：1996-09-13

申请人： Masahiro Birukawa ,  Norio Miyatake ,  Yuuichi Fukamachi ,  Yoshihiko Kudoh ,  Yasumori Hino

发明人： Masahiro Birukawa ,  Norio Miyatake ,  Yuuichi Fukamachi ,  Yoshihiko Kudoh ,  Yasumori Hino

IPC分类号： G11B11/10 ,  G11B7/007 ,  G11B7/24 ,  G11B7/26 ,  G11B11/105 ,  G11B20/12 ,  G11B27/19 ,  G11B27/30

CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10563 ,  G11B11/10578 ,  G11B20/1217 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/261

摘要： A magneto-optical recording medium includes at least a reading layer and a writing layer on a substrate. A track guide groove is formed in the medium so as to include in-groove portions and on-land portions. Only a portion where a temperature has been raised by optical beam irradiation is read, while a domain of a writing layer is copied on the writing layer, whereby a writing/reading operation can be effected with narrower track pitches. By this arrangement, there can be realized a narrow track pitch which is narrower than the diameter of a laser beam.

摘要翻译： 磁光记录介质至少包括读取层和衬底上的书写层。 在介质中形成轨道导向槽，以便包括槽内部分和陆上部分。 只读取通过光束照射而升高了温度的部分，同时在写入层上复制写入层的区域，从而能够以更窄的轨道间距进行写入/读取操作。 通过这种布置，可以实现比激光束的直径窄的窄轨道间距。

公开(公告)号：US08488433B2

公开(公告)日：2013-07-16

申请号：US13813316

申请日：2012-06-11

申请人： Kiyotaka Ito ,  Yasumori Hino

发明人： Kiyotaka Ito ,  Yasumori Hino

IPC分类号： G11B7/00

CPC分类号： G11B20/24 ,  G01B9/02002 ,  G01B9/02067 ,  G01B9/02081 ,  G01B2290/70 ,  G01D5/34715 ,  G11B7/0051 ,  G11B7/1263 ,  G11B7/1356 ,  G11B7/1362

摘要： When ld0 denotes an initial optical path length that is a length of an optical path, along which the signal light travels, as converted using a refractive index in vacuum, lm0 denotes an initial optical path length that is a length of an optical path, along which the reference light travels, as converted using a refractive index in vacuum, Δl denotes a fluctuation width of a difference in optical path lengths between the signal light and the reference light as converted using a refractive index in vacuum, λ0 denotes a central oscillation wavelength of the wavelength-variable laser, and Δλ denotes an oscillation wavelength variable range of the wavelength-variable laser, then an initial optical path difference |ld0−lm0| satisfies |ld0−lm0|>(Δl/Δλ)λ0.

摘要翻译： 当ld0表示作为信号光行进的光路的长度的初始光程长度，使用真空中的折射率转换时，lm0表示沿着光路的长度的初始光程长度 参考光行进时，使用真空中的折射率转换，Deltal表示使用真空中折射率转换的信号光和参考光之间的光程长度差的波动宽度，λ0表示中心振荡波长 的波长可变激光器，Deltalambda表示波长可变激光器的振荡波长可变范围，则初始光程差| ld0-lm0 | 满足| ld0-lm0 |>（Deltal / Deltalambda）lambda0。

公开(公告)号：US20130128709A1

公开(公告)日：2013-05-23

申请号：US13813316

申请日：2012-06-11

申请人： Kiyotaka Ito ,  Yasumori Hino

发明人： Kiyotaka Ito ,  Yasumori Hino

IPC分类号： G11B20/24

CPC分类号： G11B20/24 ,  G01B9/02002 ,  G01B9/02067 ,  G01B9/02081 ,  G01B2290/70 ,  G01D5/34715 ,  G11B7/0051 ,  G11B7/1263 ,  G11B7/1356 ,  G11B7/1362

摘要： When ld0 denotes an initial optical path length that is a length of an optical path, along which the signal light travels, as converted using a refractive index in vacuum, lm0 denotes an initial optical path length that is a length of an optical path, along which the reference light travels, as converted using a refractive index in vacuum, Δl denotes a fluctuation width of a difference in optical path lengths between the signal light and the reference light as converted using a refractive index in vacuum, λ0 denotes a central oscillation wavelength of the wavelength-variable laser, and Δλ denotes an oscillation wavelength variable range of the wavelength-variable laser, then an initial optical path difference |ld0−lm0| satisfies |ld0−lm0|>(Δl/Δλ)λ0.

摘要翻译： 当ld0表示作为信号光行进的光路的长度的初始光程长度，使用真空中的折射率转换时，lm0表示沿着光路的长度的初始光程长度 参考光行进时，使用真空中的折射率转换，Deltal表示使用真空中的折射率转换的信号光和参考光之间的光程长度差的波动宽度，λ0表示中心振荡波长 的波长可变激光器，Deltalambda表示波长可变激光器的振荡波长可变范围，则初始光程差| ld0-lm0 | 满足| ld0-lm0 |>（Deltal / Deltalambda）lambda0。