A METHOD AND APPARATUS FOR DETECTING TRACK AND FOCUS ERRORS IN AN OPTICAL HEAD,申请号EP19870119251-传众专利搜索

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发明名称	A METHOD AND APPARATUS FOR DETECTING TRACK AND FOCUS ERRORS IN AN OPTICAL HEAD
摘要
申请公布号	EP0273422(B1)	申请公布日期	1993.07.14
申请号	EP19870119251	申请日期	1987.12.28
申请人	NEC CORPORATION	发明人	KIMURA, YASUO C/O NEC CORPORATION
分类号	G11B7/09	主分类号	G11B7/09
代理机构		代理人
主权项
地址

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