Optical disc and optical disc device

专利名称：Optical disc and optical disc device发明人：Hironori Nakahara,Nobuo

Takeshita,Masaharu Ogawa

申请号：US14063826申请日：20131025公开号：US08842509B2公开日：20140923

专利附图：

摘要：In a multilayer optical disc having information layers conforming to a plurality ofdifferent optical disc standards, because the type of each information layer is notrecorded in the other information layers, in read and write operations by a compatible

optical disc device conforming to a plurality of optical disc standards, every time theinformation layer being accessed changes, it has been necessary to read the type of theinformation layer and select a method of generating a tracking error signal adapted tothe type of information layer, so access has taken time. In order to solve the aboveproblem, in the optical multilayer disc according to the present invention, having

information layers conforming to a plurality of different optical disc standards, in an areain one of the information layers, information about the other information layers isrecorded. The time required to access the other information layers can be reduced byusing this information to select a tracking error signal generating method.

申请人：Mitsubishi Electric Corporation

地址：Tokyo JP

国籍：JP

代理机构：Birch, Stewart, Kolasch & Birch, LLP

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