发明授权
US5396480A Method and apparatus for recording information using an energy beam of
power levels changed stepwise
失效
使用功率电平能量束逐步改变的用于记录信息的方法和装置
- 专利标题： Method and apparatus for recording information using an energy beam of power levels changed stepwise
- 专利标题（中）： 使用功率电平能量束逐步改变的用于记录信息的方法和装置
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申请号： US156826申请日： 1993-11-24
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公开(公告)号： US5396480A公开(公告)日： 1995-03-07
- 发明人: Naoki Morishita , Naomasa Nakamura , Katsumi Suzuki , Tadashi Kobayashi
- 申请人： Naoki Morishita , Naomasa Nakamura , Katsumi Suzuki , Tadashi Kobayashi
- 申请人地址： JPX Kawasaki
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JPX Kawasaki
- 优先权： JPX4-313454 19921124
- 主分类号： G11B7/00
- IPC分类号： G11B7/00 ; G11B7/0045 ; G11B7/0055 ; G11B7/125 ; G11B7/30
摘要：
A laser beam is radiated on a recording medium such as a phase transition type optical disk to change optical characteristics depending on a change in arrangement of atoms in a recording layer of the recording medium so as to repetitively record/erase information represented by the lengths of optical marks, the recording power of the laser beam radiated to record the information in the recording medium is changed stepwise in two or more power levels sequentially higher than an erasure power level of a laser beam radiated to erase the information recorded in the recording medium.
公开/授权文献
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