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    OPTICAL DISC AND OPTICAL DISC REPRODUCTION DEVICE
    4.
    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

    申请人： NAT INST OF ADVANCED IND SCIEN ,  SAMSUNG ELECTRONICS CO LTD

    发明人： SHIMA TAKAYUKI ,  TOMINAGA JUNJI ,  NAKANO TAKASHI ,  KIKUKAWA TAKASHI ,  FUKUZAWA NARUTOSHI ,  KOBAYASHI TATSUHIRO ,  KIM JOO-HO ,  HWANG IN-OH

    IPC分类号： G11B7/24

    CPC分类号： G11B7/252 ,  G11B7/00455 ,  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.

    OPTICAL RECORDING DISC
    6.
    发明公开
    OPTICAL RECORDING DISC 审中-公开
    光盘记录

    公开(公告)号：EP1646042A4

    公开(公告)日：2008-01-09

    申请号：EP04746655

    申请日：2004-06-30

    申请人： TDK CORP

    发明人： KIKUKAWA TAKASHI ,  FUKUZAWA NARUTOSHI ,  KOBAYASHI TATSUHIRO

    IPC分类号： B41M5/26 ,  G11B7/0045 ,  G11B7/24 ,  G11B7/243 ,  G11B7/254 ,  G11B7/257

    CPC分类号： G11B7/00452 ,  G11B7/24 ,  G11B7/252 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24314 ,  G11B2007/24316

    摘要： An optical recording disc capable of recording/reproducing data constituted of a recording mark array including recording marks and blank areas even when the length of the recording marks or the length of the blank area between adjacent recording marks is shorter than a resolution limit, capable of increasing the recording capacity greatly, and capable of enhancing C/N ratio of a reproduction signal. The optical recording disc comprises a substrate (2), a third dielectric layer (3), a light absorption layer (4), a second dielectric layer (5), a decomposition reactive layer (6) principally containing a platinum oxide, a first dielectric layer (7), and a light transmitting layer (8), characterized in that the second dielectric layer (5) has a thickness of 20-100 nm, the platinum oxide in the decomposition reactive layer (6) is decomposed into platinum and oxygen when the decomposition reactive layer (6) is irradiated with a laser beam (20) through the light transmitting layer (8), cavities are formed by oxygen gas thus produced, and a recording mark is formed on the decomposition reactive layer (6) by fine platinum particles deposited in the cavities.

    OPTICAL RECORDING DISC
    8.
    发明公开
    OPTICAL RECORDING DISC 审中-公开
    OPTISCHERAUFZEICHNUNGSDATENTRÄGER

    公开(公告)号：EP1657717A4

    公开(公告)日：2008-01-09

    申请号：EP04746654

    申请日：2004-06-30

    申请人： TDK CORP

    发明人： KIKUKAWA TAKASHI ,  FUKUZAWA NARUTOSHI ,  KOBAYASHI TATSUHIRO

    IPC分类号： G11B7/0045 ,  G11B7/24 ,  G11B7/242 ,  G11B7/243

    CPC分类号： G11B7/24065 ,  G11B7/00452 ,  G11B7/243

    摘要： There is provided an optical recording disc capable of recording/reproducing data constituted of a recording mark array including recording marks and blank areas even when the length of the recording marks or the length of the blank area between adjacent recording marks is shorter than a resolution limit, capable of significantly increasing the recording capacity and capable of enhancing C/N ratio of a reproduction signal. The optical recording disc comprises a substrate (2), a third dielectric layer (3), a light absorption layer (4), a second dielectric layer (5), a decomposition reactive layer (6) principally comprising a platinum oxide, a first dielectric layer (7), and a light transmitting layer (8). The decomposition reactive layer (6) has a thickness of 2-20 nm. The platinum oxide in the decomposition reactive layer (6) is decomposed into platinum and oxygen when the decomposition reactive layer (6) is irradiated with a laser beam (20) through the light transmitting layer (8). A cavity is formed by oxygen gas thus produced, and a recording mark is formed on the decomposition reactive layer (6) by fine platinum particles deposited in the cavity.

    摘要翻译： 提供了一种光记录盘，即使当记录标记的长度或相邻记录标记之间的空白区域的长度小于分辨率极限时，也能够记录/再现由包括记录标记和空白区域的记录标记阵列构成的数据 能够显着增加记录容量并能够提高再现信号的C / N比。 该光学记录盘包括基板（2），第三介电层（3），光吸收层（4），第二介电层（5），主要包含氧化铂的分解反应层（6），第一 介电层（7）和透光层（8）。 分解反应层（6）具有2-20nm的厚度。 当分解反应层（6）通过透光层（8）照射激光束（20）时，分解反应层（6）中的氧化铂分解成铂和氧。 通过由此产生的氧气形成空腔，并且通过沉积在空腔中的细铂颗粒在分解反应层（6）上形成记录标记。