发明名称 |
METHOD FOR EVALUATING REPRODUCED SIGNAL, REPRODUCED SIGNAL EVALUATION DEVICE AND OPTICAL DISC DEVICE EQUIPPED WITH THE SAME |
摘要 |
A reproduction signal evaluation method for evaluating quality of a reproduction signal reproduced from an information recording medium based on a binary signal generated from the reproduction signal using a PRML signal processing system, includes: a pattern extraction step of extracting, from the binary signal, a specific state transition pattern which has the possibility of causing a bit error; a step of computing a differential metric based on the binary signal; an extraction step of extracting the differential metric which is not greater than a predetermined signal processing threshold; a step of determining a mean value of the differential metrics which are not greater than the signal processing threshold and extracted in the extraction step; a standard deviation computing step of determining a standard deviation which corresponds to an error rate predicted from the mean value; and an evaluation step of evaluating a quality of the reproduction signal using the standard deviation.
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申请公布号 |
CA2697872(A1) |
申请公布日期 |
2010.01.07 |
申请号 |
CA20092697872 |
申请日期 |
2009.06.30 |
申请人 |
PANASONIC CORPORATION;SONY CORPORATION |
发明人 |
MIYASHITA, HARUMITSU;HINO, YASUMORI;SHIRAISHI, JUNYA;KOBAYASHI, SHOEI |
分类号 |
G11B20/18;G11B20/14 |
主分类号 |
G11B20/18 |
代理机构 |
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