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    OPTICAL DISC APPARATUS AND OPTICAL DISC PROCESSING METHOD
    1.
    发明申请
    OPTICAL DISC APPARATUS AND OPTICAL DISC PROCESSING METHOD 审中-公开
    光盘设备和光盘处理方法

    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。

    Optical recording head device, optical recording apparatus, and recording method
    2.
    发明授权
    Optical recording head device, optical recording apparatus, and recording method 有权
    光记录头装置，光记录装置和记录方法

    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。

    OPTICAL DISC DEVICE AND OPTICAL DISC PROCESSING METHOD
    3.
    发明申请
    OPTICAL DISC DEVICE AND OPTICAL DISC PROCESSING METHOD 审中-公开
    光盘设备和光盘处理方法

    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。

    INFORMATION RECORDING APPARATUS AND CONTROL METHOD THEREOF
    4.
    发明申请
    INFORMATION RECORDING APPARATUS AND CONTROL METHOD THEREOF 审中-公开
    信息记录装置及其控制方法

    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。

    DRIVE CONTROL APPARATUS AND DRIVE CONTROL METHOD OF SEMICONDUCTOR LASER
    5.
    发明申请
    DRIVE CONTROL APPARATUS AND DRIVE CONTROL METHOD OF SEMICONDUCTOR LASER 审中-公开
    驱动控制装置和半导体激光器的驱动控制方法

    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。

    LIGHT DEFLECTING ELEMENT
    7.
    发明申请
    LIGHT DEFLECTING ELEMENT 有权
    光偏转元件

    公开(公告)号：US20130259417A1

    公开(公告)日：2013-10-03

    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： G02F1/29

    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。