null专利检索-..脉冲调制记录或重现的（脉冲编码调制记录的入G11B20/10）专利检索查询-专利查询网


申请号	DE69723931	申请日	1997-02-14	公开(公告)号	DE69723931D1	公开(公告)日	2003-09-11
申请人	KONINKL PHILIPS ELECTRONICS NV;			发明人	SPRUIT HENDRIK;
摘要	A recording layer of rewritable phase-change material is directly overwritten by a pulsing laser spot irradiating at a writing power level, then irradiating at a lower cool-down power level during a cool-down period, and then irradiating at an erasing level with a higher power than the cool-down level. The duration of the cool-down period depends on the spot size and/or on the linear velocity of the spot with respect to the recording layer.
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