Method and apparatus detecting base line popping noise in a read head and stabilizing the magnetic domain of merged magnetoresistive read-write heads using DC write current and read bias current for an assembled disk drive

摘要

The invention includes a method of determining the presence of the baseline noise to the read head in the puffing, as well as to determine the read bias conditions for operating the read head to the free base line puffing noise, the assembled disk drive. The invention further includes evaluating the read head for free read bias conditions and the baseline puffing noise. The invention may also use the DC write current and the read bias current, in an assembled disc drive includes a read head to compensate.