利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

33 条记录 (耗时 0.009 秒)

    Electron beam memory system
    31.
    发明公开
    Electron beam memory system 失效
    电子束存储系统

    公开(公告)号：EP0254124A3

    公开(公告)日：1990-12-12

    申请号：EP87109809.1

    申请日：1987-07-07

    申请人： HITACHI, LTD.

    发明人： Ikeda, Tadashi ,  Shigematsu, Kazuo ,  Miyauchi, Yasushi ,  Terao, Motoyasu ,  Nishida, Tetsuya ,  Horigome, Shinkichi ,  Ohta, Norio ,  Suzuki, Ryo

    IPC分类号： G11B9/10

    CPC分类号： G11B9/10

    摘要： System in which a phase transition type recording film (2) is used as an information recording medium, and for recording information, a focused electron beam is selectively projected on desired positions of the recording film so as to locally heat the recording film and cause phase transition, while for retrieving information, an electron beam having energy at a degree not causing the phase transition is projected so as to utilize the fact that reflection or diffraction (7) of the primary electron beam (6) projected at the retrieval differs between the recorded regions (22a, 22b) and unrecorded regions (21a, 21b, 21c).

    Information recording method and apparatus using reversible phase change
    33.
    发明公开
    Information recording method and apparatus using reversible phase change 失效
    Verfahren undGerätzur Aufzeichnung von Daten mit reversiblerPhasenänderung。

    公开(公告)号：EP0286126A2

    公开(公告)日：1988-10-12

    申请号：EP88105643.6

    申请日：1988-04-08

    申请人： HITACHI, LTD.

    发明人： Yasuoka, Hiroshi ,  Ojima, Masahiro ,  Terao, Motoyasu ,  Nishida, Tetsuya ,  Andoo, Keikichi

    IPC分类号： G11B7/007 ,  G11B7/013

    CPC分类号： G11B7/0062 ,  G11B7/00557 ,  G11B11/00 ,  G11B19/02

    摘要： The intensity of a laser beam is kept at a readout power level while an information recording medium is rotated, and the power is raised when necessary to irradiate a high power energy beam onto a portion with information already recorded thereon. When the high power energy beam passes over the already recorded portion, the temperature of the recording film (18) rises above the melting point. Whether the existing data portion is in a crystalline state or in an amorphous state, the recording film takes a fusion state. Thereafter, the entire irradiated portion takes nearly identical states when it is cooled. As a result, unadvantageous unerased information is largely reduced. Further, the extinguishment (off) time for recording is shorter than the preceding or succeeding high level time. Accordingly, all portions excepting a newly recorded point are erased. Single beam overwriting without unadvantageously leaving unerased information becomes possible. Further, most portions of the writing area of the recording film rise in temperature above the melting point. Even if the recording film is not process­ed with vapor deposition, information can be recorded thereon without the necessity of irradiating a laser beam once or heating it.

    摘要翻译： 当信息记录介质旋转时，激光束的强度保持在读出功率水平，并且当需要将高功率能量束照射到已经记录有信息的部分上时，功率被提高。 当高功率能量束通过已经记录的部分时，记录膜（18）的温度升高到熔点以上。 无论现有的数据部分是处于结晶状态还是处于非晶状态，记录膜都是融合状态。 此后，当冷却时，整个照射部分几乎相同的状态。 结果，不利的无益信息大大减少。 此外，记录的熄灭（关闭）时间比前一个或后续的高时间短。 因此，除了新记录点之外的所有部分被擦除。 单光束覆盖不会不利地留下未被使用的信息成为可能。 此外，记录膜的写入区域的大部分区域的温度升高到高于熔点的温度。 即使记录膜没有用气相沉积处理，也可以在其上记录信息，而不需要照射一次激光或加热激光束。