公开(公告)号：US06765847B2

公开(公告)日：2004-07-20

申请号：US10125742

申请日：2002-04-18

申请人： Masahiro Birukawa ,  Yasumori Hino ,  Yasushi Hozumi ,  Tomoyuki Hiroki

发明人： Masahiro Birukawa ,  Yasumori Hino ,  Yasushi Hozumi ,  Tomoyuki Hiroki

IPC分类号： G11B1100

CPC分类号： G11B11/10582 ,  G11B11/10578 ,  G11B11/10584

摘要： On a disk-shaped substrate with pits and grooves, a first dielectric layer, a magnetic layer, and a second dielectric layer are formed. A data region used for recording/reproduction includes a plurality of tracks, and is divided into a plurality of segments. Each segment includes a pit region and a groove region. Recording/reproducing tracks are composed of the grooves. Magnetic anisotropy of a magnetic layer positioned on each of lands between the respective recording/reproducing tracks is reduced to a level lower than that of magnetic anisotropy of the magnetic layers positioned on the grooves, so that the recording/reproducing tracks are magnetically separated. On an inner side of an innermost recording/reproducing track and on an outer side of an outermost recording/reproducing track, at least one dummy track is provided, respectively.

摘要翻译： 在具有凹坑和凹槽的盘状基板上形成第一介电层，磁性层和第二介质层。 用于记录/再现的数据区包括多个轨道，并被分成多个段。 每个段包括凹坑区和凹槽区。 记录/再现轨道由凹槽组成。 位于相应的记录/再现轨道之间的每个区域上的磁性层的磁各向异性被降低到低于定位在凹槽上的磁性层的磁各向异性的水平，使得记录/再现轨迹被磁分离。 在最内记录/再现轨迹的内侧和最外侧记录/重放轨道的外侧上分别设置至少一个虚拟轨迹。

公开(公告)号：US06690626B2

公开(公告)日：2004-02-10

申请号：US10125143

申请日：2002-04-18

申请人： Masahiro Birukawa ,  Tomoyuki Hiroki ,  Yasushi Hozumi

发明人： Masahiro Birukawa ,  Tomoyuki Hiroki ,  Yasushi Hozumi

IPC分类号： G11B1100

CPC分类号： G11B11/10584 ,  G11B7/00745 ,  G11B11/10578 ,  G11B11/10582 ,  G11B11/10597

摘要： On a disk-shaped substrate in which a predetermined region ranging in a radial direction is used as a data region for recording/reproduction, a first dielectric layer, a magnetic layer, and a second dielectric layer are provided. The data region includes recording/reproducing tracks composed of a plurality of discontinuous grooves or lands ranging from an innermost track to an outermost track. Magnetic anisotropy of each of magnetic layers positioned between the respective recording/reproducing tracks is reduced to a level lower than that of magnetic anisotropy of the magnetic layers positioned on the recording/reproducing tracks, so that the magnetic layers are magnetically separated only between the recording/reproducing tracks and not magnetically separated in flat portions without grooves. Thus, reflectance is even in the flat portions, thereby allowing tilt detection.

摘要翻译： 在其中使用沿径向范围的预定区域作为记录/再现用的数据区域的盘形基板上，设置第一介电层，磁性层和第二介质层。 数据区域包括由从最内侧的轨道到最外侧轨道的多个不连续的槽或焊盘组成的记录/再现轨迹。 位于相应的记录/再现轨道之间的每个磁性层的磁各向异性被降低到比位于记录/再现轨道上的磁性层的磁各向异性低的水平，使得磁层仅在记录 /再现轨道，并且在没有凹槽的平坦部分中不磁性地分离。 因此，在平坦部分中的反射率是均匀的，从而允许倾斜检测。

公开(公告)号：US06999398B2

公开(公告)日：2006-02-14

申请号：US10106110

申请日：2002-03-27

申请人： Masakuni Yamamoto ,  Yasushi Hozumi ,  Yasumori Hino

发明人： Masakuni Yamamoto ,  Yasushi Hozumi ,  Yasumori Hino

IPC分类号： G11B7/45 ,  G11B7/24

CPC分类号： G11B7/00718 ,  G11B7/0045 ,  G11B11/10595

摘要： Information is recorded on an information recording medium such as a magneto-optical recording medium, having two recording tracks arranged alternately, typically in a double spiral manner. The two recording tracks have different recording characteristics and information is firstly recorded on the recording track less liable to cross write, typically on a land section, and subsequently on the recording track more liable to cross write, typically on a groove section.

摘要翻译： 信息被记录在诸如磁光记录介质的信息记录介质上，具有两个交替布置的记录轨道，通常以双螺旋方式布置。 两个记录轨道具有不同的记录特性，并且信息首先被记录在记录轨道上，较不易于跨写入，通常在陆地部分上，并且随后在记录轨道上更容易进行交叉写入，通常在凹槽部分上。

公开(公告)号：US07376055B2

公开(公告)日：2008-05-20

申请号：US11033727

申请日：2005-01-13

申请人： Kazuoki Hongu ,  Yasushi Hozumi ,  Yukari Aoki

发明人： Kazuoki Hongu ,  Yasushi Hozumi ,  Yukari Aoki

IPC分类号： G11B7/00

CPC分类号： G11B11/10582 ,  G11B7/00718 ,  G11B7/268 ,  G11B11/10576 ,  G11B11/10584

摘要： There is provided a method of annealing an optical recording medium formed on a substrate having a land and a groove, comprising the steps of: annealing one side wall between the land and the groove with a predetermined laser power; moving the laser to another side wall by allowing the laser to traverse one of the land and the groove with a laser power for not annealing after the step of annealing is conducted; and annealing the another side wall with the laser power.

摘要翻译： 提供了一种退火形成在具有焊盘和凹槽的基板上的光记录介质的方法，包括以下步骤：以预定的激光功率对焊台和凹槽之间的一个侧壁进行退火; 通过使激光器在退火步骤之后用激光功率不经退火的激光功率将激光器移动到另一侧壁上; 并用激光功率退火另一个侧壁。

公开(公告)号：US20050169116A1

公开(公告)日：2005-08-04

申请号：US11041731

申请日：2005-01-25

申请人： Yukari Aoki ,  Yasushi Hozumi ,  Kazuoki Hongu

发明人： Yukari Aoki ,  Yasushi Hozumi ,  Kazuoki Hongu

IPC分类号： G11B11/105 ,  G11B11/00

CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10586

摘要： Provided is a magnetic domain wall displacement magneto-optical recording medium having a preferable reproducing signal characteristic. The magnetic domain wall displacement magneto-optical recording medium includes at least a magnetic domain wall displacement layer, a switching layer, and a recording layer, in which magnetic coupling between recording tracks is disconnected. An in-plane magnetized film layer is further provided adjacent to the surface of a recording layer opposite to a side of the recording layer facing the magnetic domain wall displacement layer.

摘要翻译： 提供了具有优选再现信号特性的磁畴壁位移磁光记录介质。 磁畴壁位移磁光记录介质至少包括磁畴壁位移层，开关层和记录层，其中记录磁道之间的磁耦合被断开。 进一步在与面向磁畴壁位移层的记录层侧相对的记录层的表面附近设置面内磁化膜层。

公开(公告)号：US20050162987A1

公开(公告)日：2005-07-28

申请号：US11033727

申请日：2005-01-13

申请人： Kazuoki Hongu ,  Yasushi Hozumi ,  Yukari Aoki

发明人： Kazuoki Hongu ,  Yasushi Hozumi ,  Yukari Aoki

IPC分类号： G11B7/00 ,  G11B7/007 ,  G11B7/24 ,  G11B7/26 ,  G11B11/00 ,  G11B11/105

CPC分类号： G11B11/10582 ,  G11B7/00718 ,  G11B7/268 ,  G11B11/10576 ,  G11B11/10584

摘要： There is provided a method of annealing an optical recording medium formed on a substrate having a land and a groove, comprising the steps of: annealing one side wall between the land and the groove with a predetermined laser power; moving the laser to another side wall by allowing the laser to traverse one of the land and the groove with a laser power for not annealing after the step of annealing is conducted; and annealing the another side wall with the laser power.

摘要翻译： 提供了一种退火形成在具有焊盘和凹槽的基板上的光记录介质的方法，包括以下步骤：以预定的激光功率对焊台和凹槽之间的一个侧壁进行退火; 通过使激光器在退火步骤之后用激光功率不经退火的激光功率将激光器移动到另一侧壁上; 并用激光功率退火另一个侧壁。

公开(公告)号：US07787031B2

公开(公告)日：2010-08-31

申请号：US11733313

申请日：2007-04-10

申请人： Yasushi Hozumi ,  Goro Noto ,  Isami Itoh

发明人： Yasushi Hozumi ,  Goro Noto ,  Isami Itoh

IPC分类号： H04N5/217

CPC分类号： H04N5/2254 ,  H04N5/232 ,  H04N5/23245

摘要： An optical filter which can remove dust stuck to the incidence surface of incidence of light and reduce the mounting space. A filter body is adapted to have predetermined transmittivity as well as a piezoelectric characteristic. At least two electrodes are formed on the filter body. A drive voltage is applied between the at least two electrodes to vibrate the filter body.

摘要翻译： 一种滤光器，可以去除粘附在入射光入射面上的灰尘，并减少安装空间。 滤波器体适于具有预定的透射率以及压电特性。 至少两个电极形成在过滤体上。 在至少两个电极之间施加驱动电压以使过滤体振动。

公开(公告)号：US07522479B2

公开(公告)日：2009-04-21

申请号：US11041731

申请日：2005-01-25

申请人： Yukari Aoki ,  Yasushi Hozumi ,  Kazuoki Hongu

发明人： Yukari Aoki ,  Yasushi Hozumi ,  Kazuoki Hongu

IPC分类号： G11B11/00

CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10586

摘要： Provided is a magnetic domain wall displacement magneto-optical recording medium having a preferable reproducing signal characteristic. The magnetic domain wall displacement magneto-optical recording medium includes at least a magnetic domain wall displacement layer, a switching layer, and a recording layer, in which magnetic coupling between recording tracks is disconnected. An in-plane magnetized film layer is further provided adjacent to the surface of a recording layer opposite to a side of the recording layer facing the magnetic domain wall displacement layer.

摘要翻译： 提供了具有优选再现信号特性的磁畴壁位移磁光记录介质。 磁畴壁位移磁光记录介质至少包括磁畴壁位移层，开关层和记录层，其中记录磁道之间的磁耦合被断开。 进一步在与面向磁畴壁位移层的记录层侧相对的记录层的表面附近设置面内磁化膜层。

公开(公告)号：US06608799B2

公开(公告)日：2003-08-19

申请号：US09839307

申请日：2001-04-23

申请人： Yasushi Hozumi

发明人： Yasushi Hozumi

IPC分类号： G11B1100

CPC分类号： G11B11/10515

摘要： Recorded information is reproduced based on the displacement of a domain wall using an optical system having a reproducing optical beam with the beam waist diameter thereof satisfying a condition of 2Wo

摘要翻译： 使用具有满足条件为2Wo <900nm的具有再现光束的光束的光束系统，基于畴壁的位移再现记录信息。 在记录介质中形成明显的温度分布，磁壁的位移速度增加。 即使当盘旋转速度增加时，由此实现可靠的畴壁位移再现。