Write margin adjustment mechanism in a tape drive system

Details Write margin adjustment mechanism in a tape drive system Write margin adjustment mechanism in a tape drive system

2006-06-29

2010-06-08

Chase, Shelly A (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

Reexamination Certificate

active

07734986

ABSTRACT:
A method for dynamically adjusting read margin and write margin in a tape drive system to recover data is disclosed. The method includes the operations of monitoring a write driver to determine if a change in rewrite activity to a medium has changed and adjusting a percentage of error correcting code (ECC) capability to be used for write errors if the rewrite activity has changed. An apparatus including a tape medium and a read/write controller for performing the method is also disclosed. In one embodiment, the percentage of ECC is decreased if the rewrite activity to the medium increases.

REFERENCES:
patent: 4953168 (1990-08-01), Odaka
patent: 5255272 (1993-10-01), Gill et al.
patent: 6898036 (2005-05-01), Gill et al.
patent: 6967803 (2005-11-01), Nakamura

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