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    • 3. 发明授权
    • Optical recording medium and a method for testing the same
    • 光记录介质及其测试方法
    • US07580340B2
    • 2009-08-25
    • US11287323
    • 2005-11-28
    • Hiroshi ShingaiJiro YoshinariHideaki Miura
    • Hiroshi ShingaiJiro YoshinariHideaki Miura
    • G11B7/24
    • G11B7/243G11B7/00375G11B7/006G11B7/259G11B2007/24312G11B2007/24314
    • An optical recording medium and a method for testing that optical recording medium are provided, which can prevent degradation of a reproduction signal in the case where the optical recording medium is stored at a high temperature for a long time, which enables stable recording and reproduction of data before and after the high-temperature storage, and which can achieve high-speed recording and increase of recording density. In the optical recording medium, a reproduction signal output of a recording mark after high-temperature storage that is formed in a recording layer after the optical recording medium is stored at a storage temperature t in a range from 60° C. to 90° C. for at least 50−(4/3)(t−60) hours is 0.9 times or more a reproduction signal output of a recording mark before the high-temperature storage that has the same bit length as the recording mark after the high-temperature storage and is formed before the above high-temperature storage.
    • 提供一种用于测试该光记录介质的光学记录介质和方法,其可以防止光记录介质长时间在高温下存储的情况下的再现信号的劣化,这使得能够稳定地记录和再现 数据在高温存储之前和之后,并且可以实现高速记录和增加记录密度。 在光记录介质中,在光记录介质在形成于光记录介质的存储温度t在60℃至90℃的范围内的高温储存之后的记录标记的再现信号输出 对于至少50-(4/3)(t-60)小时,在高温存储之前的记录标记的再现信号输出是与高速存储器之后的记录标记相同的位长度的0.9倍或更多, 在上述高温储存之前形成。
    • 8. 发明申请
    • Method and apparatus for initializing recording films of optical recording medium and optical recording medium
    • 用于初始化光记录介质和光记录介质的记录膜的方法和装置
    • US20050259552A1
    • 2005-11-24
    • US10630476
    • 2003-07-30
    • Hideaki MiuraJiro YoshinariTetsuro Mizushima
    • Hideaki MiuraJiro YoshinariTetsuro Mizushima
    • G11B7/00G11B7/004G11B7/20G11B7/26G11B11/10
    • G11B7/268G11B7/24038G11B7/266
    • A method for initializing recording films of an optical recording medium includes two recording layers each including a recording film and which is formed so that a transparent intermediate layer is interposed between each adjacent pair of the recording layers, by projecting a laser beam whose power can be controlled within a predetermined range onto the recording films and simultaneously crystallizing and initializing the recording films, the method for initializing recording films of an optical recording medium including steps of setting a power of the laser beam and a position of a focus of the laser beam so that energy of the laser beam projected onto each of the recording films is equal to or higher than a minimum initialization energy which can crystallize and initialize the recording film irradiated with the laser beam, and projecting the laser beam onto the recording films of the optical recording medium. According to this method, it is possible to efficiently simultaneously crystallize and initialize recording films of the two recording layers of an optical recording medium with an apparatus of simple structure.
    • 用于初始化光记录介质的记录膜的方法包括两个记录层,每个记录层包括记录膜,并且其形成为透明中间层插入在相邻的一对记录层之间,通过投射能量可以是 控制在记录膜上的预定范围内并同时结晶和初始化记录膜,用于初始化光记录介质的记录膜的方法包括设置激光束的功率和激光束的焦点位置的步骤 投影到每个记录膜上的激光束的能量等于或高于可以结晶并初始化用激光束照射的记录膜的最小初始化能量,并将激光束投影到光学记录的记录膜上 中。 根据该方法,可以通过结构简单的装置有效地同时结晶和初始化光记录介质的两个记录层的记录膜。
    • 9. 发明申请
    • Method for recording information on optical recording medium, information recorder, and optical recording medium
    • 用于在光学记录介质,信息记录器和光学记录介质上记录信息的方法
    • US20050089798A1
    • 2005-04-28
    • US10503952
    • 2003-02-14
    • Hideaki MiuraTatsuya Kato
    • Hideaki MiuraTatsuya Kato
    • G11B7/00G11B7/0045G11B7/006G11B7/20G11B7/24G11B3/74
    • G11B7/00454G11B7/0062G11B7/24038G11B2007/0013
    • It is an object of the present invention to provide an information recording method for recording information in a data rewritable type optical recording medium having a plurality of information recording layers, which can form recording marks having good shapes. In the information recording method according to the present invention, information is recorded in an optical recording medium 10 having at least a stacked L0 layer 20 and L1 layer 30 by projecting a laser beam thereonto whose power is modulated between a plurality of powers including at least a recording power (Pw) and an erasing power (Pe) via a light incidence plane 13a. When information is recorded, λ/NA is set to be equal to or shorter than 700 nm, where λ is a wavelength of the laser beam and NA is a numerical aperture (NA) of an objective lens, and a ratio (Pe/Pw) of the recording power and the erasing power when information is to be recorded in the L0 layer 20 is set to be smaller than that when information is to be recorded in the L1 layer 30.
    • 本发明的目的是提供一种用于在具有多个信息记录层的数据可重写型光学记录介质中记录信息的信息记录方法,其可以形成具有良好形状的记录标记。 在根据本发明的信息记录方法中,信息被记录在具有至少堆叠的L0层20和L1层30的光学记录介质10中,通过将激光束投射到其上被调制的多个功率至少包括至少 经由光入射面13a的记录功率(Pw)和擦除功率(Pe)。 当记录信息时,λ/ NA设定为等于或小于700nm,其中λ是激光束的波长,NA是物镜的数值孔径(NA),并且比率(Pe / Pw )和将信息记录在L0层20中时的擦除功率设置为小于在L1层30中记录信息时的擦除功率。