专利内容由知识产权出版社提供
专利名称：Optical recording medium having a plurality
of recorded pits of different heights anddepths
发明人：Masatsugu Ogawa申请号：US08/800396申请日：19970214公开号：US056366A公开日：19990420
摘要：A method is provided for achieving high density in an optical playback medium,without relying on a reduction in size of a recorded feature. In this method, the opticalplayback medium has a substrate that has a substrate surface, a magnetic film formed onthat substrate surface and having a magnetic film surface, and has a plurality of recordingpits which are formed on either the substrate surface or on the magnetic film surface,these pits being depressions and protrusions.
申请人：NEC CORPORATION
代理机构：Foley & Lardner
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