OPTICAL DISC AND OPTICAL DISC REPRODUCTION DEVICE
    1.
    发明公开
    OPTICAL DISC AND OPTICAL DISC REPRODUCTION DEVICE 审中-公开
    光盘及其设备,用于播放光盘

    公开(公告)号:EP1914743A4

    公开(公告)日:2008-12-24

    申请号:EP06781939

    申请日:2006-07-28

    IPC分类号: G11B7/24

    摘要: In the conventional super-resolution reproduction method, an optical spot size is changed by power of the laser beam applied to an optical disc and accordingly, it is necessary to decide an optimal laser power for super-resolution reproduction for each of the recording pattern sizes. The present invention provides an optical disc formed by a recording layer and a material layer having changing viscosity. When a laser beam is applied for reproducing information recorded in the recording layer, a part of a crystalline thin film of the material layer having changing viscosity is softened. The optical constant of the softened part is changed and a discontinuous plane of the optical constant is generated at the boundary of the softened part so as to form a ring-shaped peculiar region in the optical spot. By this ring-shaped peculiar region, it is possible to reproduce a recording pattern of size smaller than the resolution limit with a signal intensity equivalent to the recording pattern of a greater size.

    MULTI-LAYER STRUCTURE AND METHOD OF DRAWING MICROSCOPIC STRUCTURE THEREIN
    2.
    发明公开
    MULTI-LAYER STRUCTURE AND METHOD OF DRAWING MICROSCOPIC STRUCTURE THEREIN 审中-公开
    多层结构和方法用于绘制微​​观结构,IT

    公开(公告)号:EP1625580A4

    公开(公告)日:2008-09-17

    申请号:EP04734438

    申请日:2004-05-21

    摘要: A multi-layer structure whose volume changes when a temperature exceeds a predetermined threshold value, a microscopic structure drawing method that involves emitting a laser beam onto the multi-layer structure to create a temperature distribution within a beam spot and performing microscopic recording on a portion of the beam spot having a temperature higher than the threshold value, an optical disc master, and a mastering method using the same, where the multi-layer structure includes a substrate and a transformation layer formed on the substrate, wherein a volume of a portion of the transformation layer irradiated by a laser beam changes when the temperature of the portion exceeds a predetermined temperature. The microscopic structure drawing method includes emitting the laser beam onto a predetermined region of the transformation layer and heating the region of the transformation layer irradiated by the laser beam beyond a predetermined temperature so that the heated region can undergo a volume change.

    METHOD AND APPARATUS FOR REPRODUCING DATA OF SUPER RESOLUTION INFORMATION STORAGE MEDIUM
    10.
    发明公开
    METHOD AND APPARATUS FOR REPRODUCING DATA OF SUPER RESOLUTION INFORMATION STORAGE MEDIUM 有权
    方法和装置用于显示数据上的超分辨率信息存储设备

    公开(公告)号:EP1774521A4

    公开(公告)日:2008-08-06

    申请号:EP05765900

    申请日:2005-06-29

    IPC分类号: G11B7/005

    摘要: A data reproducing method reproducing data recorded in a super resolution information storage medium in a form of marks having magnitudes less than a resolving power of an incident light beam, and an apparatus thereof. The data reproducing method includes irradiating a first beam having a resolving power causing a super resolution phenomenon and a second beam having a resolving power not causing a super resolution phenomenon into different places on the information storage medium, detecting a first reproduction signal based on the first beam and a second reproduction signal based on the second beam, and compensating for and calculating a temporal delay between the first reproduction signal and the second reproduction signal. Therefore, a signal reflected from a peripheral area of a reproduction beam spot other than a super resolution area can be excluded, thereby improving reproduction signal characteristics.