发明名称 Digital information reproduction method
摘要 An optical disc 100 using super-resolution effects that achieves higher-density recording exceeding the optical resolution suffers from the signal-quality degradation caused by the normal resolution component included in the reproduction signal 51. To address this problem, a data reproduction method is provided. In the method, characteristic error patterns are identified and parity check codes in conformity with run-length limited coding are used to carry out efficient and reliable error correction. Error patterns caused by the normal resolution crosstalk are localized in the leading edges of a mark following a long space and in the trailing edges of a long mark. Whether an error exists in the data is determined by use of the parity check codes. When an error occurs, a pattern in which an error is most likely to occur is selected from the above-mentioned patterns by taking account of the edge shift direction, and then the error therein is corrected.
申请公布号 EP2051255(A2) 申请公布日期 2009.04.22
申请号 EP20080016154 申请日期 2008.09.12
申请人 HITACHI LTD. 发明人 MINEMURA, HIROYUKI;SHINTANI, TOSHIMICHI;ANZAI, YUMIKO;ETO, SOICHIRO
分类号 G11B20/14;G11B20/10;G11B20/18;H03M5/14 主分类号 G11B20/14
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