Write pass error detection

Details Write pass error detection Write pass error detection

2005-04-19

2005-04-19

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C360S053000

Reexamination Certificate

active

06883122

ABSTRACT:
A data reader is arranged to read data comprising user data30and non-user data32, 34written across at least two channels of a data-holding medium10, said data being arranged into a plurality of data items26each containing user data and non-user data, with said non-user data holding information relating to said user data, including write pass number information, and data items written across the said channels at the same time being identified as a set of data items, said data reader holding a current write pass number and having a read head12for reading a respective said channel of said data-holding medium10to generate a data signal comprising said data items, and processing circuitry258, 280arranged to receive and process said data signals of a set of data items, including processing said write pass number information of each of said data items in said set, and causing updating of said current write pass number held by said data reader on the basis of the write pass number information of said data items in said set.

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