发明名称 |
REVERSIBLE MULTITRACK MAGNETIC TAPE STORAGE SYSTEM WITH MULTIFRAME ERROR PROTECTION FACILITY |
摘要 |
A data storage system having a plurality of parallel magnetic tape tracks. Error protection is based on a frame-wise product code having first code words distributed over a single track and second code words distributed cyclically among all tracks. In a read mode the system drives the tape in a first closed servo loop synchronized by the data rate, and in a write mode in a second open loop operating at a preset tape speed. The tape driver has a bidirectional buffer for framewise buffering data between the tape and an output, while interchangeably presenting either an amble frame (synchronizing patterns) or a data frame to the tape. The system enables handling of data framewise bidirectionally by the tape driver. A third layer of error protection is provided by a Reed-Solomon code operating on a uniform symbol series across a plurality of successive frames without reference to the amble frames, and assignment of all redundant symbols thereby produced to exclusive-redundancy frames. |
申请公布号 |
WO9704454(A3) |
申请公布日期 |
1997.03.06 |
申请号 |
WO1996IB00660 |
申请日期 |
1996.07.09 |
申请人 |
PHILIPS ELECTRONICS N.V.;PHILIPS NORDEN AB |
发明人 |
JOCHIJMS, PAULUS, ANTONIUS, EMIL;NIEUWKERK, AERNOUT, JAN |
分类号 |
G11B5/008;G11B15/18;G11B20/12;G11B20/18;G11B27/032 |
主分类号 |
G11B5/008 |
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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