发明名称 |
Apparatus for reproducing information from an optically readable record carrier |
摘要 |
An apparatus for reading an optical record carrier on which information has been digitally recorded as a track of pit and land areas. The apparatus detects track-loss by comparing the amplitudes of the signals obtained from read-out of the pit areas with the signals obtained from read-out of the land areas. The signals are sampled in synchronism with the frequency of the digital bits stored on the record carrier and are processed digitally.
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申请公布号 |
US4628497(A) |
申请公布日期 |
1986.12.09 |
申请号 |
US19840578459 |
申请日期 |
1984.02.09 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
BIERHOFF, MARTINUS P. M. |
分类号 |
G11B7/09;G11B7/005;G11B7/085;G11B20/18;G11B27/36;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/09 |
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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