发明名称 |
Recording medium identification apparatus, information reproduction apparatus and information recording apparatus |
摘要 |
<p>A recording-medium-identification apparatus that emits a light beam (9) onto a recording medium (1), is provided with: a light-receiving device (2) which receives the reflected light beam that is reflected from the recording medium; a first extraction device (41) which extracts a specified wobble-frequency signal from the output received-light signal that corresponds to the wobble frequency of the recording tracks on a specified recording medium from among a plurality of types of the recording media; a second extraction device (42) which extracts another wobble-frequency signal from the output received-light signal that corresponds to the wobble frequency of the recording tracks on another recording medium other than the specified recording medium from among a plurality of types of the recording media; and an identification device (6) which uses at least the specified wobble-frequency signal or the other wobble-frequency signal to identify the type of the recording medium.</p> |
申请公布号 |
EP1477974(A2) |
申请公布日期 |
2004.11.17 |
申请号 |
EP20040252514 |
申请日期 |
2004.04.29 |
申请人 |
PIONEER CORPORATION |
发明人 |
GOTO, HIROKI;NISHIO, YOSHIMICHI;HASHIZUKA, YOSHIHIRO;IWANO, HIDEYASU;FUKAMACHI, JUNICHI |
分类号 |
G11B7/004;G11B7/007;G11B7/0045;G11B7/005;G11B19/12;G11B27/19;G11B27/24;(IPC1-7):G11B7/007 |
主分类号 |
G11B7/004 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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