发明名称 |
Medium detecting device, medium detecting method, recording-medium playback apparatus, and computer product |
摘要 |
An output of an optical sensor in the initial state, that is, when a disc is absent, is set as a reference value. A threshold for detecting the disc is calculated by adding a predetermined variation to the reference value. When the output of the optical sensor exceeds the threshold, it is determined that the disc is present.
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申请公布号 |
US2005207472(A1) |
申请公布日期 |
2005.09.22 |
申请号 |
US20050080903 |
申请日期 |
2005.03.16 |
申请人 |
PIONEER CORPORATION |
发明人 |
MATSUMOTO HIROYUKI;MATSUMOTO TAKESHI;TAMAMURA KATSUNORI;YOSHIDA TAKAO;INABA FUMITO;MIZOGUCHI TAKASHI |
分类号 |
G01V8/12;G01J1/42;G01K11/00;G01S17/02;G11B17/04;G11B17/051;(IPC1-7):G01K11/00 |
主分类号 |
G01V8/12 |
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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