发明授权
- 专利标题： Reproduced signal evaluation method and write adjustment method
- 专利标题（中）： 再现信号评估方法和写入调整方法
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申请号： US12836743申请日： 2010-07-15
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公开(公告)号： US08085641B2公开(公告)日： 2011-12-27
- 发明人: Hiroyuki Minemura , Takahiro Kurokawa , Junya Shiraishi , Shoei Kobayashi , Harumitsu Miyashita , Yasumori Hino
- 申请人： Hiroyuki Minemura , Takahiro Kurokawa , Junya Shiraishi , Shoei Kobayashi , Harumitsu Miyashita , Yasumori Hino
- 申请人地址： JP Tokyo JP Tokyo JP Osaka
- 专利权人： Hitachi Consumer Electronics Co., Ltd.,Sony Corporation,Panasonic Corporation
- 当前专利权人： Hitachi Consumer Electronics Co., Ltd.,Sony Corporation,Panasonic Corporation
- 当前专利权人地址： JP Tokyo JP Tokyo JP Osaka
- 代理机构： Antonelli, Terry, Stout & Kraus, LLP.
- 优先权： JP2009-167198 20090715
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
The present invention aims to provide a reproduced signal evaluation method and a write adjustment method for offering a Blu-ray disc having a large storage capacity with excellent media compatibility. An evaluation index L-SEAT is calculated through signed addition using a Euclidean distance difference calculated from at least one of target signals in which a focused edge is shifted to the right and left, and the quality of the reproduced signal is evaluated based on the evaluation index. Write condition adjustment using the index enables write adjustment not depending on SNR and achieving high adjustment accuracy.