Information recording method and apparatus with suppressed mark edge jitters
    58.
    发明授权
    Information recording method and apparatus with suppressed mark edge jitters 有权
    具有抑制标记边缘抖动的信息记录方法和装置

    公开(公告)号:US06236635B1

    公开(公告)日:2001-05-22

    申请号:US09149051

    申请日:1998-09-08

    IPC分类号: G11B700

    摘要: A method for recording information is disclosed in which an information recording medium is irradiated with a recording energy beam power-modulated into at least a record power level and a record-ready power level lower than the record power level. When forming a mark portion of a predetermined length, the radiation energy of the energy beam is increased as compared with when forming a mark portion of a different length before or after the first pulse of an energy beam pulse train including at least a pulse for forming the mark portion. Also, only in the case where the energy beam is modulated by the power lower in power level than the record-ready power level after the last pulse of the energy beam pulse train including at least one pulse for forming a mark portion and the mark portion is followed by a space portion of a predetermined length, the particular radiation energy of low power level is reduced as compared with when the mark portion is followed by a space potion of a different length. The radiation energy is increased and/or decreased.

    摘要翻译: 公开了一种用于记录信息的方法,其中信息记录介质被照射到被调制成至少记录功率电平和低于记录功率电平的记录就绪功率电平的记录能量束。 当形成预定长度的标记部分时,与在至少包括用于形成的脉冲的能量束脉冲串的第一脉冲之前或之后形成不同长度的标记部分相比,能量束的辐射能量增加 标记部分。 此外,只有在能量束脉冲串的最后脉冲包括至少一个用于形成标记部分的脉冲和标记部分的能量束脉冲序列的功率电平以下的功率电平被调制的能量束被调制的情况下,记录就绪功率电平 之后是预定长度的空间部分,与当标记部分之后是不同长度的空间部分时相比,低功率电平的特定辐射能量减小。 辐射能量增加和/或减少。

    Information recording method using a modulated recording beam at high,
intermediate and low power levels
    59.
    发明授权
    Information recording method using a modulated recording beam at high, intermediate and low power levels 失效
    使用高,中,低功率电平的调制记录光束的信息记录方法

    公开(公告)号:US5084857A

    公开(公告)日:1992-01-28

    申请号:US359803

    申请日:1989-05-31

    IPC分类号: G11B7/0055

    CPC分类号: G11B7/00557

    摘要: The present invention relates to a method of recording on a rewritable recording medium using a laser beam capable of producing at least three discreet levels of power. The three levels of power used for writing to the recording medium is greater than the power required for reading. The present method is unique in that the power level of the laser beam is modulated between high, intermediate, and low levels over a time period so that at least three discreet power levels are radiated to the recording medium during recording. The increment of the radiation energy of the upward pulse from the intermediate level toward the high level is within the range of 0.8 to 1.2 times the decrement of the radiation energy of the downward pulse from the intermediate level to the low level. The present invention provides high density recording capability with minimum non-erasure areas even when the recording medium is formed from a high velocity crystallization (high speed erasure).

    摘要翻译: 本发明涉及使用能够产生至少三个谨慎的功率的激光束在可重写记录介质上进行记录的方法。 用于写入记录介质的三个电源电平大于读取所需的功率。 本方法的独特之处在于,激光束的功率电平在一段时间内在高电平,中间电平和低电平之间被调制,使得在记录期间至少三个分立的功率电平被辐射到记录介质。 上升脉冲从中间电平向高电平的辐射能量的增量在从中间电平到低电平的向下脉冲的辐射能量减少的0.8到1.2倍的范围内。 即使当高速结晶(高速擦除)形成记录介质时,本发明提供具有最小非擦除区域的高密度记录能力。