公开(公告)号：US5440531A

公开(公告)日：1995-08-08

申请号：US275662

申请日：1994-07-15

申请人： Masatoshi Sato ,  Jun Saito ,  Hideki Akasaka

发明人： Masatoshi Sato ,  Jun Saito ,  Hideki Akasaka

IPC分类号： G11B11/105 ,  G11B13/04

CPC分类号： G11B11/10586 ,  G11B11/105 ,  G11B11/10506 ,  G11B11/10519 ,  G11B11/10521

摘要： A magnetooptical recording method for recording data using a bit having upward-magnetization and a bit having downward-magnetization on a recording layer of a magnetooptical recording medium comprises the steps of using, as the medium, a multilayered magnetic recording medium consisting of a first layer having a perpendicular magnetic anisotropy acting as a recording layer, and a second layer having a perpendicular magnetic anisotropy acting as a reference layer; moving the medium; applying an initial field so that, before recording, the direction of magnetization of the recording layer is left unchanged, and that of the reference layer is aligned either upward or downward; radiating a laser beam onto the medium; pulse modulating an intensity of the laser beam in accordance with binary data to be recorded; when the laser beam is radiated, applying a bias field to the irradiated portion; and when the intensity of the pulse-modulated laser beam is at high level, forming one of the bit having upward-magnetization and that having downward-magnetization, and when the intensity of the pulse-modulated laser beam is at low level, forming the other bit.

摘要翻译： 使用具有向上磁化的位和在磁光记录介质的记录层上具有向下磁化的位的数据记录数据的磁光记录方法包括以下步骤：使用由第一层构成的多层磁记录介质 具有作为记录层的垂直磁各向异性，和具有作为参考层的垂直磁各向异性的第二层; 移动媒体; 施加初始场，使得在记录之前，记录层的磁化方向保持不变，并且参考层的磁化方向向上或向下排列; 将激光束照射到介质上; 根据要记录的二进制数据对激光束的强度进行脉冲调制; 当激光束被照射时，向照射部分施加偏置场; 并且当脉冲调制激光束的强度处于高电平时，形成具有向上磁化并具有向下磁化的位之一，并且当脉冲调制激光束的强度处于低电平时，形成 其他位

公开(公告)号：US5239524A

公开(公告)日：1993-08-24

申请号：US453255

申请日：1989-12-20

申请人： Masatoshi Sato ,  Jun Saito ,  Hideki Akasaka

发明人： Masatoshi Sato ,  Jun Saito ,  Hideki Akasaka

IPC分类号： G11B11/105

CPC分类号： G11B11/10586 ,  G11B11/105 ,  G11B11/10506 ,  G11B11/10519 ,  G11B11/10521

摘要： A magnetooptical recording method for recording data using a bit having upward-magnetization and a bit having downward-magnetization on a recording layer of a magnetooptical recording medium comprises the steps of using, as the medium, a multilayered magnetic recording medium consisting of a first layer having a perpendicular magnetic anisotropy acting as a recording layer, and a second layer having a perpendicular magnetic anisotropy acting as a reference layer; moving the medium; applying an initial field so that, before recording, the direction of magnetization of the recording layer is left unchanged, and that of the reference layer is aligned either upward or downward; radiating a laser beam onto the medium; pulse modulating an intensity of the laser beam in accordance with binary data to be recorded; when the laser beam is radiated, applying a bias field to the irradiated portion; and when the intensity of the pulse-modulated laser beam is at high level, forming one of the bit having upward-magnetization and that having downward-magnetization, and when the intensity of the pulse-modulated laser beam is at low level, forming the other bit.

摘要翻译： 使用具有向上磁化的位和在磁光记录介质的记录层上具有向下磁化的位的数据记录数据的磁光记录方法包括以下步骤：使用由第一层构成的多层磁记录介质 具有作为记录层的垂直磁各向异性，和具有作为参考层的垂直磁各向异性的第二层; 移动媒体; 施加初始场，使得在记录之前，记录层的磁化方向保持不变，并且参考层的磁化方向向上或向下排列; 将激光束照射到介质上; 根据要记录的二进制数据对激光束的强度进行脉冲调制; 当激光束被照射时，向照射部分施加偏置场; 并且当脉冲调制激光束的强度处于高电平时，形成具有向上磁化并具有向下磁化的位之一，并且当脉冲调制激光束的强度处于低电平时，形成 其他位

公开(公告)号：US5140654A

公开(公告)日：1992-08-18

申请号：US656491

申请日：1991-02-19

申请人： Hideki Akasaka ,  Hiroshi Ohki ,  Masaaki Doi

发明人： Hideki Akasaka ,  Hiroshi Ohki ,  Masaaki Doi

IPC分类号： G02B6/12 ,  G02B6/14 ,  G02F1/01 ,  G02F1/035

CPC分类号： G02F1/0353 ,  G02F2001/0142 ,  G02F2203/07

摘要： An optical waveguide device for polarization rotation comprises a substrate, a waveguide path arranged on the substrate, a mode converting element arranged at an intermediate region of the waveguide path, and a polarization rotating element arranged at a location in the waveguide path between a place where light is incident and the mode converting element. The mode converting element includes a phase shifter for relatively shifting a phase between TE and TM components of light transmitted through the waveguide path, in response to an applied voltage, and also includes a mode converter for converting modes between the TE and TM components. The polarization rotating element rotates a polarization plane of the light transmitted through the waveguide path by (90+180 .times.n) degrees, where n is zero or an integer.

公开(公告)号：US4853912A

公开(公告)日：1989-08-01

申请号：US131327

申请日：1987-12-08

申请人： Hideki Akasaka ,  Masatoshi Sato

发明人： Hideki Akasaka ,  Masatoshi Sato

IPC分类号： G11B11/10 ,  G11B11/105

CPC分类号： G11B11/10586 ,  G11B11/10506 ,  G11B11/10519 ,  G11B11/10584

摘要： A magneto-optical recording process is produced by irradiating a recording track of a recording medium, in the course of movement thereof, with a main light beam of intensity sufficient for heating the medium to a temperature at which the coercive force thereof is reduced to zero or a very small value in a continuous manner during the recording operation and irradiating a separating area with a subsidiary beam of a modulated intensity, thereby modulating the vertical magnetization of said separating area. A floating magnetic field generated by the thus modulated vertical magnetization generates magnetic fields of mutually different directions, thus forming a record bit on the recording track.

摘要翻译： 磁光记录过程是通过在其移动过程中用记录介质的记录轨道照射强度足以将介质加热至其矫顽力降至零的温度的主光束来产生的 或在记录操作期间以连续的方式具有非常小的值，并且利用调制强度的辅助光束照射分离区域，从而调制所述分离区域的垂直磁化。 由这样调制的垂直磁化产生的浮动磁场产生相互不同方向的磁场，从而在记录磁道上形成记录位。

公开(公告)号：US5367507A

公开(公告)日：1994-11-22

申请号：US91913

申请日：1993-07-16

申请人： Masatoshi Sato ,  Jun Saito ,  Hideki Akasaka

发明人： Masatoshi Sato ,  Jun Saito ,  Hideki Akasaka

IPC分类号： G11B11/105 ,  G11B13/04

CPC分类号： G11B11/105 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10519 ,  G11B11/10521 ,  G11B11/10586

摘要： A magnetooptical recording method for recording data using a bit having upward-magnetization and a bit having downward-magnetization on a recording layer of a magnetooptical recording medium comprises the steps of using, as the medium, a multilayered magnetic recording medium consisting of a first layer having a perpendicular magnetic anisotropy acting as a recording layer, and a second layer having a perpendicular magnetic anisotropy acting as a reference layer; moving the medium; applying an initial field so that, before recording, the direction of magnetization of the recording layer is left unchanged, and that of the reference layer is aligned either upward or downward; radiating a laser beam onto the medium; pulse modulating an intensity of the laser beam in accordance with binary data to be recorded; when the laser beam is radiated, applying a bias field to the irradiated portion; and when the intensity of the pulse-modulated laser beam is at high level, forming one of the bit having upward-magnetization and that having downward-magnetization, and when the intensity of the pulse-modulated laser beam is at low level, forming the other bit.

摘要翻译： 使用具有向上磁化的位和在磁光记录介质的记录层上具有向下磁化的位的数据记录数据的磁光记录方法包括以下步骤：使用由第一层构成的多层磁记录介质 具有作为记录层的垂直磁各向异性，和具有作为参考层的垂直磁各向异性的第二层; 移动媒体; 施加初始场，使得在记录之前，记录层的磁化方向保持不变，并且参考层的磁化方向向上或向下排列; 将激光束照射到介质上; 根据要记录的二进制数据对激光束的强度进行脉冲调制; 当激光束被照射时，向照射部分施加偏置场; 并且当脉冲调制激光束的强度处于高电平时，形成具有向上磁化并具有向下磁化的位之一，并且当脉冲调制激光束的强度处于低电平时，形成 其他位

公开(公告)号：US4433901A

公开(公告)日：1984-02-28

申请号：US268683

申请日：1981-06-01

申请人： Yosuke Takahashi ,  Hideki Akasaka ,  Toshikatsu Kasui ,  Tatsuo Niwa ,  Tsuneo Sukegawa

发明人： Yosuke Takahashi ,  Hideki Akasaka ,  Toshikatsu Kasui ,  Tatsuo Niwa ,  Tsuneo Sukegawa

IPC分类号： C09K9/00 ,  G02F1/15 ,  G09F9/30 ,  G02F1/17

CPC分类号： G02F1/1523 ,  G02F1/1527

摘要： An improvement in an all solid type electrochromic display element comprising a first electrode, a first oxidation-reduction reaction film layer, an insulating film layer, a second oxidation-reduction reaction film layer and a second electrode laminated in this order. The improvement is characterized in that only one of the first and second oxidation-reduction film layers is patterned.

摘要翻译： 全固体型电致变色显示元件的改进包括依次层叠的第一电极，第一氧化还原反应膜层，绝缘膜层，第二氧化还原反应膜层和第二电极。 其改进之处在于，第一和第二氧化还原膜层中只有一个被图案化。

公开(公告)号：US4350414A

公开(公告)日：1982-09-21

申请号：US160533

申请日：1980-06-18

申请人： Yosuke Takahashi ,  Hideki Akasaka ,  Toshikatsu Kasui ,  Tatsuo Niwa

发明人： Yosuke Takahashi ,  Hideki Akasaka ,  Toshikatsu Kasui ,  Tatsuo Niwa

IPC分类号： C09K9/00 ,  B60J3/04 ,  G02F1/15 ,  G09F9/30 ,  G02F1/17

CPC分类号： G02F1/1523 ,  G02F1/1527

摘要： The all solid-state ECD of the present invention features a structure composed of an oxidizable film capable of a redox reaction and showing a change in the transmittance in a certain wavelength range in the oxidized state, a reducible film capable of a redox reaction and showing a change in the transmittance in a certain wavelength range in the reduced state, an insulating film provided between said films and allowing proton conduction but prohibiting electron conduction, and a pair of electrodes between which said three films are maintained, wherein said oxidizable film is substantially composed of iridium hydroxide and/or nickel hydroxide, while said reducible film is substantially composed of tungsten oxide and/or molybdenum oxide.The ECD shows several faster response speeds, a significantly reduced voltage and the change in the transmittance improved more than six times with a drive voltage reduced to 1/8.

摘要翻译： 本发明的全固体ECD的特征在于，具有能够进行氧化还原反应的氧化膜和氧化态的一定波长范围的透射率的变化的结构，能够进行氧化还原反应的可还原膜， 在还原状态下在一定波长范围内的透射率的变化，设置在所述膜之间并允许质子传导但禁止电子传导的绝缘膜，以及保持所述三个膜之间的一对电极，其中所述可氧化膜基本上 由氢氧化铱和/或氢氧化镍组成，而所述可还原膜基本上由氧化钨和/或氧化钼组成。 ECD显示出几个更快的响应速度，显着降低的电压和透射率的变化提高了六倍以上，驱动电压降至1/8。

公开(公告)号：US5389455A

公开(公告)日：1995-02-14

申请号：US948166

申请日：1992-09-21

申请人： Jun Saito ,  Tetsuo Hosokawa ,  Akio Okamuro ,  Hiroyuki Matsumoto ,  Haruhisa Iida ,  Satomi Kokai ,  Hideki Akasaka

发明人： Jun Saito ,  Tetsuo Hosokawa ,  Akio Okamuro ,  Hiroyuki Matsumoto ,  Haruhisa Iida ,  Satomi Kokai ,  Hideki Akasaka

IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B5/66

CPC分类号： G11B11/10586 ,  Y10S428/90

摘要： A medium includes a readout layer, a memory layer, an adjusting layer for an exchange coupling force .sigma..sub.W, and a writing layer, and can perform an over-write operation upon radiation of a modulated laser beam. The readout layer essentially consists of GdFeCo, the memory layer essentially consists of TbFeCo, the adjusting layer essentially consists of GdFeCo, and the writing layer essentially consists of DyFeCo. The C/N ratio of the medium exceeds 53 dB. The C/N ratio is a value obtained when a plurality of mark.sup.H having a period of 1.6 .mu.m are written, and are read out so that medium noise is maximized as compared to other noise components.

摘要翻译： 介质包括读出层，存储层，用于交换耦合力σW的调整层和写入层，并且可以在调制的激光束的辐射时执行过写操作。 读出层基本上由GdFeCo组成，记忆层主要由TbFeCo组成，调整层基本上由GdFeCo组成，写层基本上由DyFeCo组成。 介质的C / N比超过53 dB。 C / N比是写入具有1.6μm的周期的多个标记H时获得的值，并且被读出，使得与其它噪声分量相比中等噪声最大化。

公开(公告)号：US5204193A

公开(公告)日：1993-04-20

申请号：US734119

申请日：1991-07-25

申请人： Masatoshi Sato ,  Hideki Akasaka

发明人： Masatoshi Sato ,  Hideki Akasaka

IPC分类号： C22C38/00 ,  C22C19/07 ,  C22C38/10 ,  C22C45/00 ,  C22C45/04 ,  G11B11/10 ,  G11B11/105 ,  G11C13/06 ,  H01F10/12 ,  H01F10/13 ,  H01F10/16

CPC分类号： G11B11/105 ,  G11B11/10586 ,  Y10S428/90

摘要： A Curie temperature (Tc) writing magnetooptical recording medium which uses a dual perpendicular magnetic layer is composed of a first layer having a low Curie point (TL) and a high coercive force (HH) and a second layer having a relatively high Curie point (TH) and low coercive force (HL) and wherein data is written by applying an external magnetic field to the medium which is heated to a temperature higher than the low Curie point (TL) and lower than the high Curie point (TH). The Tc writing magnetooptical recording medium is characterized in that both the first and second layers are made of an RE-Fe-Co amorphous alloy, wherein the RE represents at least one rare earth metal selected from the group consisting of Tb, Dy, Gd and Ho.

摘要翻译： 使用双垂直磁性层的书写磁光记录介质的居里温度（Tc）由具有低居里点（TL）和高矫顽力（HH）的第一层和具有较高居里点的第二层 TH）和低矫顽力（HL），并且其中通过向被加热到高于低居里点（TL）并低于高居里点（TH）的温度的介质施加外部磁场来写入数据。 Tc写磁光记录介质的特征在于，第一层和第二层均由RE-Fe-Co非晶合金制成，其中RE表示选自Tb，Dy，Gd中的至少一种稀土金属和 何

公开(公告)号：US4855975A

公开(公告)日：1989-08-08

申请号：US104421

申请日：1987-10-05

申请人： Hideki Akasaka ,  Masatoshi Sato

发明人： Hideki Akasaka ,  Masatoshi Sato

IPC分类号： G11B11/10 ,  G11B11/105

CPC分类号： G11B11/10586 ,  G11B11/10506 ,  G11B11/10519

摘要： A magnetooptical recording method for recording data using a bit having upward-magnetization and a bit having downward-magnetization on a recording layer of a magnetooptical recording medium comprises the steps of using, as the medium, a multilayered magnetic recording medium consisting of a first layer having a perpendicular magnetic anisotropy acting as a recording layer, and a second layer having a perpendicular magnetic anisotropy acting as a reference layer; moving the medium; applying an initial field so that, before recording, the direction of magnetization of the recording layer is left unchanged, and that of the reference layer is aligned either upward or downward; radiating two adjacent laser beams, i.e., a leading beam and a trailing beam onto the medium; the leading beam being an erasing beam of low level which is not modulated in principle; the trailing beam is a writing beam which is pulse modulated between high level and basis level in accordance with binary data to be recorded; and the basis level being able to have an intensity equal to or lower than the low level and to be zero level; when the trailing laser beam is radiated, applying a bias field to the irradiated portion; and when the intensity of the pulse-modulated laser beam is at high level, forming one of the bit having upward-magnetization, and when the leading low-level laser beam is radiated, forming the other bit.

摘要翻译： 使用具有向上磁化的位和在磁光记录介质的记录层上具有向下磁化的位的数据记录数据的磁光记录方法包括以下步骤：使用由第一层构成的多层磁记录介质 具有作为记录层的垂直磁各向异性，和具有作为参考层的垂直磁各向异性的第二层; 移动媒体; 施加初始场，使得在记录之前，记录层的磁化方向保持不变，并且参考层的磁化方向向上或向下排列; 将两个相邻的激光束，即前导光束和后向光束照射到介质上; 前导光束是原则上未调制的低电平擦除光束; 拖尾光束是根据要记录的二进制数据在高电平和基准电平之间进行脉冲调制的写入光束; 并且基准能够具有等于或低于低水平的强度并且为零水平; 当后向激光束被照射时，向照射部分施加偏置场; 并且当脉冲调制激光束的强度处于高电平时，形成具有向上磁化的位之一，并且当引导低级激光束被辐射时，形成另一位。