发明名称 |
METHOD AND SYSTEM FOR ERASING PREVIOUSLY RECORDED DOMAINS IN A MAGNETO-OPTIC RECORDING MEDIUM |
摘要 |
Methods for directly over-writing the binary data value of a bit of digital data, stored in a particular one of a multiplicity of microscopic storage regions of a thin-film magneto-optic recording layer, in the absence of a substantial externally applied bias magnetic field, employ a magnetic material having a compensation temperature a few tens of degrees centigrade above room temperature. A source of energy is energized to heat the particular storage region to a sufficiently high temperature that the self-demagnetization field of the recording layer material inverts the net magnetic moment of that region. Multiple over-writing of the long-term stable stored data values can be provided.
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申请公布号 |
US5184335(A) |
申请公布日期 |
1993.02.02 |
申请号 |
US19910700882 |
申请日期 |
1991.05.10 |
申请人 |
MOVID INFORMATION TECHNOLOGY, INC. |
发明人 |
KRYDER, MARK H.;SHIEH, HAN-PING D. |
分类号 |
G11B11/105;G11B20/18;G11B27/034;G11B27/036 |
主分类号 |
G11B11/105 |
代理机构 |
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