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137 条记录 (耗时 0.028 秒)

    OPTICAL RECORDING METHOD
    106.
    发明公开
    OPTICAL RECORDING METHOD 有权
    OPTISCHES AUFZEICHNUNGSVERFAHREN

    公开(公告)号：EP1647976A1

    公开(公告)日：2006-04-19

    申请号：EP04747937.3

    申请日：2004-07-16

    申请人： Mitsubishi Kagaku Media Co., Ltd.

    发明人： HORIE, Michikazu Mitsubishi Kagaku Media Co., Ltd. ,  OHNO, Takashi, Mitsubishi Kagaku Media Co., Ltd. ,  KIYONO, Kenjirou Mitsubishi Kagaku Media Co., Ltd. ,  KUBO, Masae, Mitsubishi Kagaku Media Co., Ltd.

    IPC分类号： G11B7/0045 ,  G11B7/125

    CPC分类号： G11B7/0062

    摘要： To provide an optical recording method to be used for recording at a high data transfer rate where the reference clock frequency is at least about 200 MHz and a linear velocity is about 40 m/sec.
    When recording mark length-modulated information is to be recorded on a recording medium by applying a recording laser beam locally to the recording medium, in order to form one record mark length of nT, m pieces of recording pulses α i T (1≦i≦m) and m pieces of off-pulses β i T (1≦i≦m), represented by: α 1 T , β 1 T , α 2 T , β 2 T , … , α i T , β i T , … , α m T , β m T (where m is a natural number representing a pulse dividing number, α i (1≦i≦m) is a real number of larger than 0, β i (1≦i≦m-1) is a real number of larger than 0, and β m is a real number of at least 0), are used, and a recording laser beam having a writing power Pw i is applied within a time of α i T (1≦i≦m), a recording laser beam having a bias power Pb i of Pb i i and Pb i i+1 , is applied within a time of β i T (1≦i≦m-1), the front recording pulse α 1 T will rise as deviated for a time of dT top from the front position of the record mark having a length of nT, with respect to at least two record marks, the pulse dividing number m is at least 2, and with respect to all record marks with m being at least 2, 2.5≦n/m, in a case where plural different record mark lengths are to be respectively formed by the same pulse dividing number m, α 1 and/or α m is changed to form such record mark lengths having different lengths respectively, provided that when the α 1 is changed, dT top and/or β 1 is also changed, and when the α m is changed, β m-1 and/or β m is also changed.

    摘要翻译： 提供一种用于以高数据传输速率进行记录的光记录方法，其中参考时钟频率为至少约200MHz，线速度为约40m / sec。 当记录标记长度调制信息通过将记录激光束局部地施加到记录介质上而将记录标记长度调制信息记录在记录介质上时，为了形成nT的一个记录标记长度，m个记录脉冲±i T（1‰| ‰‰‰‰‰²²²²²²²‰‰‰‰‰²²²²²²²²²²T T T T T T T T T T T ，²i T，€|，±m T，²m T（其中m是表示脉冲除数的自然数，±i（1‰|‰| m）是大于0的实数，²i （1‰|‰| m-1）是大于0的实数，²m是至少为0的实数），并且将具有写入功率Pw i的记录激光束施加在 在±i T（1‰|‰| m）的时间内，具有Pb i

    REWRITABLE OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING METHOD
    109.
    发明公开
    REWRITABLE OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING METHOD 有权
    可重写光记录介质的方法光记录

    公开(公告)号：EP1475784A4

    公开(公告)日：2012-03-14

    申请号：EP03705130

    申请日：2003-02-13

    申请人： MITSUBISHI KAGAKU MEDIA CO LTD

    发明人： OHNO TAKASHI ,  KUBO MASAE ,  HORIE MICHIKAZU ,  MIZUNO MASAAKI ,  HOSHINO HIROYUKI ,  OKAMURO AKIO

    IPC分类号： G11B7/24 ,  G11B7/0045 ,  G11B7/006 ,  G11B7/125 ,  G11B7/26

    CPC分类号： G11B7/243 ,  G11B7/0045 ,  G11B7/00454 ,  G11B7/0062 ,  G11B7/126 ,  G11B7/24 ,  G11B7/259 ,  G11B7/26 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  Y10T428/21

    摘要： The present invention provides CD-RW which makes high velocity recording at a level of at least 24-times velocity possible, rewritable DVD which makes high velocity recording at a level of at least 6-times velocity possible, and a recording method therefor, while maintaining interchangeability with conventional CD-RW standards and rewritable DVD standards. A rewritable optical recording medium comprising a substrate and a phase-change type recording layer, wherein a portion in a crystalline state corresponds to an unrecorded or erased state, and a portion in an amorphous state correspond to a recorded state, to record EFM modulated information by forming amorphous marks by irradiating the recording layer with a recording laser beam, and wherein recording is carried out by irradiating a recording laser beam having a wavelength of about 780 nm through an optical system having a numerical aperture NA of 0.5 or 0.55, at 24-times velocity or 32-times velocity of the reference velocity, where the reference velocity (1-time velocity) is a linear velocity of from 1.2 m/s to 1.4 m/s, modulation m11 of record signals is from 60% to 80%, the top value Rtop of the reflectivity of the high pattern is from 15% to 25%, and jitters are at most 35 nsec.