发明名称 |
OPTICAL INFORMATION REPRODUCTION APPARATUS |
摘要 |
In the optical information reproduction apparatus using Homodyne phase diversity detection, the S/N ratio of a reproduced signal is deteriorated due to the influence of a quantization noise generated in an A/D converter for digitalizing a differential signal. The optical information reproduction apparatus is arranged to have the A/D converter for digitalizing the differential signal having a vertical resolution equal to or higher than 9 bits. |
申请公布号 |
US2014029405(A1) |
申请公布日期 |
2014.01.30 |
申请号 |
US201313875350 |
申请日期 |
2013.05.02 |
申请人 |
HITACHI CONSUMER ELECTRONICS CO., LTD. |
发明人 |
KUROKAWA TAKAHIRO;KIKUGAWA ATSUSHI |
分类号 |
G11B20/10 |
主分类号 |
G11B20/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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