公开(公告)号：US20090109816A1

公开(公告)日：2009-04-30

申请号：US12256365

申请日：2008-10-22

申请人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

发明人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/1267

摘要： According to one embodiment, a calibration section controls an LD driving section so as to carry out test writing on a recording layer of an optical disc using a light pulse having relaxation oscillation, irradiates the test-written area with a reproduction laser beam so as to detect reflected light, and determine write strategy based on the detected result. A recording process is executed on the optical disc by using the light pulse having relaxation oscillation based on the write strategy determined by the calibration section.

摘要翻译： 根据一个实施例，校准部分控制LD驱动部分，以便使用具有弛豫振荡的光脉冲对光盘的记录层进行测试写入，用再现激光束照射测试写入区域，以便 检测反射光，并根据检测结果确定写入策略。 通过使用基于由校准部确定的写入策略的具有弛豫振荡的光脉冲在光盘上执行记录处理。

公开(公告)号：US08989525B2

公开(公告)日：2015-03-24

申请号：US13726953

申请日：2012-12-26

申请人： Yuuzo Kamiguchi ,  Katsuya Sugawara ,  Masahiro Kanamaru ,  Keiichiro Yusu ,  Masatoshi Sakurai

发明人： Yuuzo Kamiguchi ,  Katsuya Sugawara ,  Masahiro Kanamaru ,  Keiichiro Yusu ,  Masatoshi Sakurai

IPC分类号： G02F1/295 ,  G02F1/29

CPC分类号： G02F1/29 ,  G02F1/2955

摘要： According to an embodiment, a light deflecting element includes a dielectric body, a first electrode, and a second electrode. The second electrode is configured to sandwich the dielectric body with the first electrode so as to apply a voltage to the dielectric body. The second electrode includes orthogonal portions that are substantially orthogonal to an incident direction of a light beam passing through the dielectric body, parallel portions that are substantially parallel to the incident direction of the light beam. The orthogonal portions and the parallel portions are formed in an alternate manner on the light beam incident side of the dielectric body. The second electrode includes a linear sloping portion that slopes in a direction toward intersection with the incident direction of the light beam. The orthogonal portions, the parallel portions, and the linear sloping portion are formed integrally.

摘要翻译： 根据实施例，光偏转元件包括电介质体，第一电极和第二电极。 第二电极被配置为将电介质体与第一电极夹住，以向电介质体施加电压。 第二电极包括基本上垂直于通过电介质体的光束的入射方向的正交部分，该平行部分基本上平行于光束的入射方向。 正交部分和平行部分以交替的方式形成在介电体的光束入射侧。 第二电极包括在与光束的入射方向交叉的方向上倾斜的线性倾斜部分。 正交部分，平行部分和直线倾斜部分一体地形成。

公开(公告)号：US08077586B2

公开(公告)日：2011-12-13

申请号：US12257213

申请日：2008-10-23

申请人： Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

发明人： Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/127 ,  G11B7/0045 ,  G11B7/006

摘要： According to one embodiment, an optical recording head device includes a light source which outputs such a relaxation oscillation optical pulse that a full width at half maximum of a single pulse is 820 ps or less, a driving unit for driving the light source, an objective lens which converges emission light from the light source on a recording layer of a recording medium, and captures reflective light which is reflected by the recording layer of the recording medium, a distribution unit, placed between the light source and the objective lens, for distributing incident light, and a photodetection unit for receiving via the distribution unit the reflective light which is reflected by the recording layer of the recording medium, wherein a resonator length of the light source is 6560 μm or less.

摘要翻译： 根据一个实施例，光记录头装置包括一个光源，其输出这样的弛豫振荡光脉冲，单脉冲的半高全宽为820ps或更小，用于驱动光源的驱动单元， 将来自光源的发射光会聚在记录介质的记录层上并捕获由记录介质的记录层反射的反射光，放置在光源和物镜之间的分配单元，用于分布 以及光检测单元，用于经由分配单元接收由记录介质的记录层反射的反射光，其中光源的谐振器长度为6560μm以下。

公开(公告)号：US20090109815A1

公开(公告)日：2009-04-30

申请号：US12260920

申请日：2008-10-29

申请人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

发明人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/1267

摘要： According to one embodiment, an optical disc device includes a light source portion which applies laser light to an optical disc, a drive portion which supplies a drive current to the light source portion so as to cause the light source portion to apply laser light of light pulses having relaxation oscillation, and a controller which controls the drive portion to supply a drive current so as to cause the light source portion to emit laser light of (n−1)×N (N is an integral number) light pulses having relaxation oscillation with respect to a mark with recording mark length nT (n: integral number, T: channel clock) to be recorded on the optical disc.

摘要翻译： 根据一个实施例，光盘装置包括向光盘施加激光的光源部分，向光源部分提供驱动电流以使光源部分施加光的激光的驱动部分 具有弛豫振荡的脉冲和控制驱动部分提供驱动电流以使光源部分发出具有弛豫振荡的（n-1）×N（N为整数）光脉冲的激光的控制器， 相对于要记录在光盘上的具有记录标记长度nT（n：整数，T：通道时钟）的标记。

公开(公告)号：US5534355A

公开(公告)日：1996-07-09

申请号：US424082

申请日：1995-04-19

申请人： Shiho Okuno ,  Susumu Hashimoto ,  Keiichiro Yusu ,  Koichiro Inomata

发明人： Shiho Okuno ,  Susumu Hashimoto ,  Keiichiro Yusu ,  Koichiro Inomata

IPC分类号： C22C45/02 ,  C23C14/34 ,  G11B5/39 ,  H01F10/08 ,  H01F10/12 ,  H01F10/13 ,  H01F10/26 ,  H01F10/32 ,  H01F41/18 ,  H01F41/30 ,  H01L43/08 ,  H01L43/10 ,  G11B5/66 ,  B32B15/01

CPC分类号： B82Y25/00 ,  B82Y40/00 ,  H01F10/3281 ,  H01F41/302 ,  H01L43/10 ,  G11B5/3903 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/1129 ,  Y10T428/12632 ,  Y10T428/12819 ,  Y10T428/12854 ,  Y10T428/12861 ,  Y10T428/12889 ,  Y10T428/12903 ,  Y10T428/12944 ,  Y10T428/12951 ,  Y10T428/24942 ,  Y10T428/265

摘要： Disclosed is an artificial multilayer in which ferromagnetic layers and nonmagnetic layers are alternatively laminated, wherein a uniaxial magnetic anisotropy is introduced into the ferromagnetic layers in a predetermined direction, thereby controlling the gradient of the relative change of resistivity to the change of external magnetic field. The uniaxial magnetic anisotropy is introduced into the ferromagnetic layers by applying a magnetic field along the surface of ferromagnetic layers during the formation thereof.

摘要翻译： 公开了一种人造层叠体，其中交替地层叠铁磁性层和非磁性层，其中沿预定方向将单轴磁各向异性引入到铁磁层中，从而控制电阻率相对于外部磁场变化的梯度。 在形成铁磁层期间，通过在铁磁层的表面施加磁场，将单轴磁各向异性引入铁磁层。

公开(公告)号：US20120153487A1

公开(公告)日：2012-06-21

申请号：US13407909

申请日：2012-02-29

申请人： Keiichiro Yusu

发明人： Keiichiro Yusu

IPC分类号： H01L29/43

CPC分类号： G11B7/261 ,  G03F7/11 ,  G03F7/2061 ,  H01J2237/31793

摘要： A substrate for electron-beam drawing, characterized by including a base layer 20, a first layer 30 formed on the base layer 20 comprising one of Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, In, Sn, Sb, La, Ce, Pr, Nd, Pm, Sm, Hf, Re, Os, Ir, Pt, Au, Pb, and Bi, a second layer 40 formed on the first layer 30 comprising one of C and B and having a film-thickness of 100 μm to 300 μm, and a resist layer 50 formed above the second layer 40.

摘要翻译： 一种用于电子束拉制的基片，其特征在于包括：基底层20，形成在基底层20上的第一层30，其包含Y，Zr，Nb，Mo，Tc，Ru，Rh，Pd，Ag，In，Sn ，Sb，La，Ce，Pr，Nd，Pm，Sm，Hf，Re，Os，Ir，Pt，Au，Pb和Bi，形成在第一层30上的包含C和B之一的第二层40， 膜厚度为100μm至300μm，以及形成在第二层40上方的抗蚀剂层50。

公开(公告)号：US20090196138A1

公开(公告)日：2009-08-06

申请号：US12351226

申请日：2009-01-09

申请人： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

发明人： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/126

摘要： According to one embodiment, in one embodiment of the invention, a laser drive circuit is provided with a first current source, a second drive current source, and a third current source. The control section selectively obtains a plurality of laser light use mode of controlling the from first to third current sources to use pulse laser light accompanying relaxation oscillation, and a complex laser light use mode of using laser light where laser pulses are combined, whose starting end has an abrupt impulse change portion caused by relaxation oscillation and whose intermediate section is a flat portion with a fixed intensity.

摘要翻译： 根据一个实施例，在本发明的一个实施例中，激光驱动电路设置有第一电流源，第二驱动电流源和第三电流源。 控制部选择性地获得多个激光使用模式，其控制从第一至第三电流源使用伴随弛豫振荡的脉冲激光，以及复合激光使用模式，其中使用激光脉冲组合的激光，其起始端 具有由松弛振动引起的突然脉冲变化部分，其中间部分是具有固定强度的平坦部分。

公开(公告)号：US20090141760A1

公开(公告)日：2009-06-04

申请号：US12260824

申请日：2008-10-29

申请人： Masahiro Saito ,  Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Kazuto Kuroda

发明人： Masahiro Saito ,  Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Kazuto Kuroda

IPC分类号： H01S3/00

CPC分类号： G11B7/1263

摘要： According to one embodiment, a drive control apparatus of a semiconductor laser includes a driving circuit which drives the semiconductor laser by applying pulses transiting from bias current to peak current to the semiconductor laser as laser driving current that causes relaxation oscillation of emission light intensity of the semiconductor laser, and a control circuit which controls the bias current such that the bias current has a predetermined ratio limiting fluctuation of a leading peak value of the relaxation oscillation occurring for each application of pulses relative to threshold current of the semiconductor laser. The control circuit changes the bias current to maintain the predetermined ratio relative to fluctuation of the threshold current.

摘要翻译： 根据一个实施例，半导体激光器的驱动控制装置包括驱动电路，该驱动电路通过施加从偏置电流流向峰值电流的脉冲来驱动半导体激光器作为激光驱动电流，该激光驱动电流引起半导体激光器的发射光强度的弛豫振荡 半导体激光器和控制偏置电流的控制电路，使得偏置电流相对于半导体激光器的阈值电流具有针对每次施加脉冲而产生的弛豫振荡的引导峰值的预定比例限制波动。 控制电路改变偏置电流以相对于阈值电流的波动保持预定的比率。

公开(公告)号：US20090109809A1

公开(公告)日：2009-04-30

申请号：US12258359

申请日：2008-10-24

申请人： Kazuto Kuroda ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Takashi Usui ,  Masahiro Saito

发明人： Kazuto Kuroda ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Takashi Usui ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/1263 ,  G11B7/00456

摘要： According to one embodiment, a laser drive circuit includes a photodetector which receives part of laser light emitted from a laser element to a recording medium independently of reflection laser light reflected by the recording medium, and outputs an output corresponding to the strength thereof, an integration circuit which integrates the output from the photodetector for a predetermined time, and a setting circuit which sets the intensity of a laser drive current supplied to the laser element on the basis of the output from the integration circuit.

摘要翻译： 根据一个实施例，激光驱动电路包括光电检测器，其独立于由记录介质反射的反射激光，将从激光元件发射的激光的一部分接收到记录介质，并且输出与其强度对应的输出， 电路，其将来自光电检测器的输出积分预定时间;以及设置电路，其根据积分电路的输出设定提供给激光元件的激光驱动电流的强度。

公开(公告)号：US5773156A

公开(公告)日：1998-06-30

申请号：US591350

申请日：1996-01-25

申请人： Koichiro Inomata ,  Keiichiro Yusu ,  Roger Highmore ,  Shiho Okuno ,  Yoshiaki Saito

发明人： Koichiro Inomata ,  Keiichiro Yusu ,  Roger Highmore ,  Shiho Okuno ,  Yoshiaki Saito

IPC分类号： H01L43/10 ,  H01F10/12 ,  H01F1/00

CPC分类号： H01L43/10 ,  H01F1/0063 ,  Y10T428/12014 ,  Y10T428/12465 ,  Y10T428/12528 ,  Y10T428/12674

摘要： A magnetoresistance effect element comprises a magnetic body obtained by dispersing magnetic metal particles containing at least one magnetic element selected from the group consisting of Fe, Co, and Ni in a semiconductor matrix.

摘要翻译： 磁阻效应元件包括通过将含有选自Fe，Co和Ni中的至少一种磁性元素的磁性金属颗粒分散在半导体基体中而获得的磁体。