发明申请
- 专利标题: REDUNDANCY PROTECTION FOR DATA RECORDED ACROSS MULTIPLE LAYERS OF RECORDING MEDIA
- 专利标题(中): 记录介质多层记录数据的冗余保护
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申请号: US11380721申请日: 2006-04-28
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公开(公告)号: US20070256000A1公开(公告)日: 2007-11-01
- 发明人: Allen Bates , Nils Haustein , Craig Klein , Henry Liu , Daniel Winarski
- 申请人: Allen Bates , Nils Haustein , Craig Klein , Henry Liu , Daniel Winarski
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 主分类号: G11C29/00
- IPC分类号: G11C29/00
摘要:
Improved reliability for multi-layer media is providing by the present invention. A data stream U is received for recording to a multi-layer rotating storage medium, the data stream U comprising a sequence of data bits. Each data bit U(J) is encoded into X representation bits. A first representation bit B(1,J) is recorded onto a first layer of the storage media, the second representation bit B(2,J) is recorded onto a second layer of the storage media, etc. When a request to read the recorded data U from the storage media is subsequently received, a plurality of the X representation bits are read back from the storage media and are decoded into the original data bit U(J). In one embodiment, encoding may be performed with a convolution encoding algorithm and decoding with a PRML decoding algorithm. In another embodiment, Reed Solomon encoding/decoding may be employed.