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    Optical disc device, optical disc and testing method of optical disc
    5.
    发明授权
    Optical disc device, optical disc and testing method of optical disc 有权
    光盘装置，光盘及光盘的测试方法

    公开(公告)号：US08971163B2

    公开(公告)日：2015-03-03

    申请号：US13995625

    申请日：2012-01-06

    申请人： Kenya Nakai ,  Masayuki Omaki

    发明人： Kenya Nakai ,  Masayuki Omaki

    IPC分类号： G11B7/126 ,  G11B7/1263 ,  G11B7/26 ,  G11B7/1376 ,  G11B7/24065 ,  G11B7/00

    CPC分类号： G11B7/1263 ,  G11B7/1376 ,  G11B7/24065 ,  G11B7/268 ,  G11B2007/0006 ,  G11B2007/0013

    摘要： An optical disc device uses an optical disc (6) capable of super-resolution reproduction, and includes a semiconductor laser (1), a laser driving circuit (21) that supplies a driving current to the semiconductor laser, a light receiving element (8) that detects return light from the optical disc (6) and obtains reproduction signal of recording data of the optical disc (6), and a light emission amount control means (22) that controls a light emission amount of the semiconductor laser (1) by the laser driving circuit (21) so as to keep a peak intensity of a focused light spot formed on an information recording layer of the optical disc 6 to be greater than or equal to a peak intensity at which a super-resolution effect is obtained. The light emission amount control means (22) controls a light emission amount of the semiconductor laser (1) by the laser driving circuit (21) based on a decrease rate D of a peak intensity of a focused light spot on an information recording layer of the optical disc (1) determined by an assumed disc tilt and a comatic aberration according to a thickness of a light transmitting layer of the optical disc (1), and a lower limit value Pld_L of a light emission amount at which a predetermined reproduction performance is obtained.

    摘要翻译： 光盘装置使用能够进行超分辨率再现的光盘（6），并且包括半导体激光器（1），向半导体激光器提供驱动电流的激光驱动电路（21），光接收元件（8） ），其检测来自光盘（6）的返回光并获得光盘（6）的记录数据的再现信号，以及控制半导体激光器（1）的发光量的发光量控制装置（22） 通过激光驱动电路（21）将形成在光盘6的信息记录层上的聚焦光点的峰值强度保持为大于或等于获得超分辨率效果的峰值强度 。 发光量控制装置（22）基于激光驱动电路（21）的信息记录层上的聚焦光点的峰值强度的降低率D来控制半导体激光器（1）的发光量 由假定的光盘倾斜和根据光盘（1）的光透射层的厚度的彗形像差确定的光盘（1）以及预定的再现性能的发光量的下限值Pld_L 获得。

    Information device and method for performing information processing
    9.
    发明授权
    Information device and method for performing information processing 有权
    用于执行信息处理的信息设备和方法

    公开(公告)号：US09001632B2

    公开(公告)日：2015-04-07

    申请号：US14129203

    申请日：2012-10-19

    申请人： Panasonic Intellectual Property Management Co., Ltd.

    发明人： Takashi Mihara ,  Shigeru Furumiya

    IPC分类号： G11B7/004 ,  G11B7/0045 ,  G11B7/2433 ,  G11B7/24065 ,  G11B7/006 ,  G11B7/257

    CPC分类号： G11B7/00454 ,  G11B7/0062 ,  G11B7/24065 ,  G11B7/2433 ,  G11B2007/25706 ,  G11B2007/25715

    摘要： The present application discloses an information device for performing optical information processes for a recording medium including a phase-change recording layer which becomes amorphous under irradiation with pulsed amorphization light that has prescribed amorphization energy Ew. The information device includes an irradiator configured to irradiate a prescribed region of the phase-change recording layer with pulsed light and an energy setting portion which sets crystallization energy Ee for the pulsed light to crystallize the prescribed region. The crystallization energy Ee per the pulsed light, which is set by the energy setting portion, is greater than the amorphization energy Ew per the pulsed amorphization light.

    摘要翻译： 本申请公开了一种用于执行包括相变记录层的记录介质的光学信息处理的信息设备，该相变记录层在具有规定的非晶化能量Ew的脉冲非晶化光照射下变为无定形。 该信息装置包括配置成用脉冲光照射相变记录层的规定区域的照射器和设置脉冲光的结晶能Ee以使结晶规定区域的能量设定部。 由能量设定部分设定的每个脉冲光的结晶能Ee大于每个脉冲非晶化光的非晶化能Ew。

    Optical information recording medium and recording/reproducing device
    10.
    发明授权
    Optical information recording medium and recording/reproducing device 有权
    光信息记录介质和记录/再现装置

    公开(公告)号：US09472231B2

    公开(公告)日：2016-10-18

    申请号：US14651286

    申请日：2014-01-29

    申请人： MITSUBISHI ELECTRIC CORPORATION

    发明人： Kenya Nakai ,  Masayuki Omaki

    IPC分类号： G11B7/24065 ,  G11B7/24053 ,  G11B7/1263 ,  G11B7/00 ,  G11B7/0045 ,  G11B20/12 ,  G11B7/0037

    CPC分类号： G11B7/24053 ,  G11B7/0037 ,  G11B7/00454 ,  G11B7/1263 ,  G11B7/24065 ,  G11B2007/0006 ,  G11B2020/1292 ,  G11B2220/2541 ,  G11B2220/2595

    摘要： An optical information recording medium has: a recording layer; a super-resolution functional layer; and a protective layer. Letting n be the refractive index of the protective layer with respect to a laser beam focused by a focusing optical system, λ, be the wavelength of the laser beam, and ds be the depth of recording marks, when the super-resolution functional layer is irradiated by the focused laser beam, it forms a focused light spot including central light that irradiates the recording marks and peripheral light that irradiates a region outside the central light. The optical information recording medium further satisfies either the condition that the central light has a positive phase difference with respect to the peripheral light and ds>λ/4n, or the condition that the central light has a negative phase difference with respect to the peripheral light and ds

    摘要翻译： 光信息记录介质具有：记录层; 超分辨率功能层; 和保护层。 令n为相对于由聚焦光学系统聚焦的激光束的保护层的折射率，λ为激光束的波长，ds为记录标记的深度，当超分辨率功能层为 由聚焦激光束照射，形成聚焦光点，其包括照射记录标记的中心光和照射中心光外部的区域的周边光。 光信息记录介质还满足中心光相对于周边光具有正相位差和ds>λ/ 4n的条件，或者中心光相对于周边光具有负相位差的条件 和ds <λ/ 4n。