发明授权
- 专利标题： Reproduction signal evaluation method, information recording medium, reproduction apparatus and recording apparatus
- 专利标题（中）： 再现信号评估方法，信息记录介质，再现装置和记录装置
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申请号： US12573200申请日： 2009-10-05
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公开(公告)号： US08179760B2公开(公告)日： 2012-05-15
- 发明人: Kiyotaka Ito , Yasumori Hino , Harumitsu Miyashita , Isao Kobayashi
- 申请人： Kiyotaka Ito , Yasumori Hino , Harumitsu Miyashita , Isao Kobayashi
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Renner, Otto, Boisselle & Sklar, LLP
- 主分类号： G11B5/09
- IPC分类号： G11B5/09 ; G11B20/10 ; G11B27/36 ; G11B7/0045
摘要：
A reproduction signal evaluation method according to the present invention relates to adjustment of an edge portion between a shortest mark and a shortest space in a data sequence including marks and spaces in combination that is recordable on an information recording medium. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.
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