发明授权
- 专利标题： Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same
- 专利标题（中）： 再现信号评估方法，再现信号评估单元和采用该方法的光盘装置
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申请号： US12698284申请日： 2010-02-02
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公开(公告)号： US08248902B2公开(公告)日： 2012-08-21
- 发明人: Harumitsu Miyashita , Yasumori Hino , Junya Shiraishi , Shoei Kobayashi
- 申请人： Harumitsu Miyashita , Yasumori Hino , Junya Shiraishi , Shoei Kobayashi
- 申请人地址： JP Osaka JP Tokyo
- 专利权人： Panasonic Corporation,Sony Corporation
- 当前专利权人： Panasonic Corporation,Sony Corporation
- 当前专利权人地址： JP Osaka JP Tokyo
- 代理机构： Wenderoth Lind & Ponack, L.L.P.
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
A reproduction signal evaluation unit includes a pattern detection section for extracting, from a binary signal, a specific state transition pattern which has a possibility of causing a bit error; a differential metric computing section for computing a differential metric based on the binary signal of the extracted state transition pattern; an error computing section for computing an error rate predicted based on an integration value that is integrated by an integration section, a count value that is counted by a pattern count section, an integration value that is integrated by another integration section, and a count value that is counted by another pattern count section, and a standard deviation computing section for computing a standard deviation based on the computed error rate.