发明名称 Optical information reproducing methods and devices
摘要 <p>An optical information reproducing method for demodulating the information recorded on a recording medium (15) by a viterbi decoding method, in which data can be demodulated with high accuracy even if the recording power has undergone variations at the time of recording the information. Data recorded on the recording medium (5) after modulation (12) in which the minimum length between transitions is limited to not less than 2 is decoded using the viterbi decoding method. A specified signal recorded on the recording medium (5) is used for setting (22) the reference value used for viterbi decoding (23). &lt;IMAGE&gt;</p>
申请公布号 EP0847054(A2) 申请公布日期 1998.06.10
申请号 EP19970309776 申请日期 1997.12.04
申请人 SONY CORPORATION 发明人 KAGAWA, MASAKI
分类号 G11B20/12;G11B7/005;G11B20/10;G11B20/14;G11B20/18;G11B27/30;H03M13/41;(IPC1-7):G11B20/10 主分类号 G11B20/12
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