发明名称 |
Optical disk, optical disk recording/reproduction apparatus, and optical disk signal quality evaluation method |
摘要 |
In order to evaluate the quality of a signal recorded on an optical recording medium, a target signal is obtained based on a predetermined data string and a predetermined partial response characteristic, and for each clock cycle, an equalization error is calculated that is a difference between the target signal and a signal reproduced each clock cycle. Further, the product of the equalization errors calculated at different times is obtained, and based on the obtained product, the quality of a signal is evaluated.
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申请公布号 |
EP1431974(A2) |
申请公布日期 |
2004.06.23 |
申请号 |
EP20030028985 |
申请日期 |
2003.12.17 |
申请人 |
NEC CORPORATION;KABUSHIKI KAISHA TOSHIBA |
发明人 |
OHKUBO, SHUICHI;HONMA, HIROMI;OGAWA, MASATSUGU;NAKANO, MASAKI;IWANAGA, TOSHIAKI;KASHIHARA, YUTAKA;NAGAI, YUUJI |
分类号 |
G11B20/10;G11B7/004;G11B20/18;G11B27/36;(IPC1-7):G11B20/10 |
主分类号 |
G11B20/10 |
代理机构 |
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