Optical disc apparatus
    52.
    发明申请
    Optical disc apparatus 审中-公开
    光盘装置

    公开(公告)号:US20060002277A1

    公开(公告)日:2006-01-05

    申请号:US11169659

    申请日:2005-06-30

    IPC分类号: G11B7/00

    摘要: An optical disc apparatus of the present invention in its broader aspects is configured to have a predetermined range of A/M2, which is determined by an area A of a light-receiving surface of a photodetector to receive a reflected laser beam reflected on first and second recording layers of an optical disc, and a lateral magnification M (ratio of a condenser lens focal length fc to an objective lens focal length fo) of a light-receiving system to pass a reflected laser beam.

    摘要翻译: 本发明的光盘装置在其更广泛的方面被配置为具有由接收光电检测器的光接收表面的面积A确定的A / M 2的预定范围 在光盘的第一和第二记录层上反射的反射激光束,以及光接收系统的横向放大率M(聚光透镜焦距fc与物镜焦距fo的比率),以使反射激光束 。

    Optical pickup and optical disk apparatus
    54.
    发明授权
    Optical pickup and optical disk apparatus 失效
    光学拾取和光盘设备

    公开(公告)号:US08582413B2

    公开(公告)日:2013-11-12

    申请号:US13709787

    申请日:2012-12-10

    IPC分类号: G11B7/00

    摘要: According to one embodiment, an optical pickup configured to record and to reproduce on a layer of a disk, including, a light source configured to emit a laser beam, an objective lens including a variable use magnification and configured to focus the laser beam on the layer, a collimator lens configured to change the magnification of the objective lens by moving along an optical axis direction, and a liquid crystal module configured to generate spherical aberration to cancel a coma aberration which may occur because an object point and an image point of the objective lens at the use magnification do not exist on an optical axis of the objective lens.

    摘要翻译: 根据一个实施例,一种光学拾取器,被配置为在盘的层上记录和再现,包括被配置为发射激光束的光源,包括可变放大倍率的物镜,并且被配置为将激光束聚焦在 层,准直透镜,被配置为通过沿着光轴方向移动来改变物镜的放大倍数;以及液晶模块,被配置为产生球面像差以消除可能由于对象点和图像点的像点而可能发生的彗形像差 在物镜的光轴上不存在使用放大率的物镜。

    OPTICAL PICKUP AND OPTICAL DISK APPARATUS
    55.
    发明申请
    OPTICAL PICKUP AND OPTICAL DISK APPARATUS 失效
    光学拾取和光盘设备

    公开(公告)号:US20130094341A1

    公开(公告)日:2013-04-18

    申请号:US13709787

    申请日:2012-12-10

    IPC分类号: G11B7/1378

    摘要: According to one embodiment, an optical pickup configured to record and to reproduce on a layer of a disk, including, a light source configured to emit a laser beam, an objective lens including a variable use magnification and configured to focus the laser beam on the layer, a collimator lens configured to change the magnification of the objective lens by moving along an optical axis direction, and a liquid crystal module configured to generate spherical aberration to cancel a coma aberration which may occur because an object point and an image point of the objective lens at the use magnification do not exist on an optical axis of the objective lens.

    摘要翻译: 根据一个实施例,一种光学拾取器,被配置为在盘的层上记录和再现,包括被配置为发射激光束的光源,包括可变放大倍率的物镜,并且被配置为将激光束聚焦在 层,准直透镜,被配置为通过沿着光轴方向移动来改变物镜的放大倍数;以及液晶模块,被配置为产生球面像差以消除可能由于对象点和图像点的像点而可能发生的彗形像差 在物镜的光轴上不存在使用放大率的物镜。

    INFORMATION RECORDING AND REPRODUCING APPARATUS
    57.
    发明申请
    INFORMATION RECORDING AND REPRODUCING APPARATUS 有权
    信息记录和再现设备

    公开(公告)号:US20130021892A1

    公开(公告)日:2013-01-24

    申请号:US13618173

    申请日:2012-09-14

    IPC分类号: G11B7/1374 G11B7/1376

    摘要: According to one embodiment, an information recording and reproducing apparatus including, a focus control module, an objective lens control module, a calculation module, and a tracking control module. If, detection the recording marks line, to focus a laser light of a second wavelength to the recording layer through an objective lens and to operation a recording layer tracking control using a tracking error signal taken out from a second reflected light and a laser light of a first wavelength to a track groove through the objective lens and to operation a guide layer tracking control to control the objective lens using a tracking error signal taken out from a first reflected light.

    摘要翻译: 根据一个实施例,一种信息记录和再现装置,包括聚焦控制模块,物镜控制模块,计算模块和跟踪控制模块。 如果检测记录标记线,则通过物镜将第二波长的激光聚焦到记录层,并且使用从第二反射光和第二反射光的激光中取出的跟踪误差信号来操作记录层跟踪控制 通过物镜的轨道槽的第一波长,并且使用从第一反射光取出的跟踪误差信号来操作引导层跟踪控制来控制物镜。

    MEMORY DEVICE, RECORDING METHOD, AND RECORDING AND REPRODUCING METHOD
    58.
    发明申请
    MEMORY DEVICE, RECORDING METHOD, AND RECORDING AND REPRODUCING METHOD 失效
    记录装置,记录方法和记录和再现方法

    公开(公告)号:US20120250428A1

    公开(公告)日:2012-10-04

    申请号:US13235630

    申请日:2011-09-19

    IPC分类号: G11C7/00

    摘要: A memory device, includes a recording medium; a probe to write a plurality of the signals; a first driving portion to vibratory drive the recording medium; a detecting unit which, when the first driving portion changes a frequency to vibratory drive the recording medium, detects a change in an amplitude of the resonance drive, detects the frequency at which the amplitude becomes maximum as a resonance frequency; and a calculating unit which calculates a timing when the probe writes a plurality of the signals using the resonance frequency; wherein, the first driving portion vibratory drives the recording medium and the probe writes a plurality of the signals.

    摘要翻译: 存储装置,包括记录介质; 用于写入多个信号的探针; 用于振动驱动记录介质的第一驱动部分; 检测单元,当所述第一驱动部分将所述记录介质的频率改变为振动驱动时,检测所述共振驱动的振幅的变化,将所述振幅变得最大的频率检测为共振频率; 以及计算单元,其计算当所述探针使用所述共振频率写入多个所述信号时的定时; 其中,第一驱动部分振动驱动记录介质,并且探针写入多个信号。