Magnetic disk drive with parameter setting

Details Magnetic disk drive with parameter setting Magnetic disk drive with parameter setting

2006-11-14

2006-11-14

Tzeng, Fred F. (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Reexamination Certificate

active

07136240

ABSTRACT:
Embodiments of the invention are directed to setting optimum FIR filter coefficients. In one embodiment, a POR (Power On Reset) control block acquires temperature data from a thermistor. If the temperature is the first to have been detected as falling within a low temperature range, a filter coefficient determining block in a read/write channel determines filter coefficients of a FIR filter by using the signal acquired from the magnetic disk. The determined filter coefficients are set to the FIR filter. If the temperature data does not satisfy the above-mentioned condition, filter coefficients registered in a filter coefficient table are set to the FIR filter.

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