초록 ▼

A magnetic recording head includes a current perpendicular to the plane read head having a read sensor and a low resistance lead structure. The lead structure includes a layer of conductive material that forms at least a portion of the lead structure such that the layer of conductive material has a

A magnetic recording head includes a current perpendicular to the plane read head having a read sensor and a low resistance lead structure. The lead structure includes a layer of conductive material that forms at least a portion of the lead structure such that the layer of conductive material has a lower resistivity than a resistivity of the remainder of the lead structure. The layer of conductive material with lower resistivity decreases the overall resistance of the lead structure.

대표청구항 ▼

A magnetic recording head includes a current perpendicular to the plane read head having a read sensor and a low resistance lead structure. The lead structure includes a layer of conductive material that forms at least a portion of the lead structure such that the layer of conductive material has a

A magnetic recording head includes a current perpendicular to the plane read head having a read sensor and a low resistance lead structure. The lead structure includes a layer of conductive material that forms at least a portion of the lead structure such that the layer of conductive material has a lower resistivity than a resistivity of the remainder of the lead structure. The layer of conductive material with lower resistivity decreases the overall resistance of the lead structure. ck, wherein a plurality of adjacent servo sectors form a servo wedge across the rotatable disc surface and in which isolating step (b) of claim 1 comprises steps of: (b1) repeating the determining steps (a1) through (a4) of claim 2 for the plurality of adjacent data tracks of the rotatable disc surface; and (b2) processing the stored total written-in repeatable run-out error value components of each of the plurality of servo sectors of the servo wedge to isolate the repeatable error value component of the total written-in repeatable run-out error value for the selected servo sector. 4. The method of claim 1 in which the disc drive comprises a servo loop having servo control electronics, the data track of determining step (a) is one of a plurality of adjacent data tracks supported by the rotatable disc surface, the repeatable error value component of isolating step (b) is a time domain repeatable error value component, wherein each of the plurality of data tracks support a plurality of servo sectors, and in which the compensating step (e) comprises steps of: (e1) determining a transfer function value for each selected frequency of the servo loop of the disc drive; (e2) deriving the time domain repeatable error value component for each of the plurality of servo sectors of each of the plurality of adjacent data tracks; (e3) transforming each of the time domain repeatable error value components for each of the plurality of servo sectors into a frequency domain repeatable error value component for each of the plurality of servo sectors of each of the plurality of adjacent data tracks; (e4) factoring each of the frequency domain repeatable error value components of each of the plurality of servo sectors by the transfer function for a selected one of the selected frequencies to produce a frequency domain repeatable error compensation value for each of the plurality of servo sectors of each of the plurality of adjacent data tracks; (e5) applying an inverse transform to each of the frequency domain repeatable error compensation values to produce a time domain repeatable error compensation value for each of the servo sectors of each of the plurality of adjacent data tracks; (e6) storing each of the time domain repeatable error compensation values for use in generating and applying a cross track repeatable compensation signal to the servo control electronics of the servo loop to compensate for each of the time domain repeatable error value components of each of the servo sectors of each of the plurality of adjacent data tracks; and (e7) generating and applying the cross track repeatable compensation signal to the servo loop, compensating for each of the time domain repeatable error value components for each of the servo sectors of each of the plurality of adjacent data tracks. 5. The method of claim 4 in which the non-repeatable error value component of separating step (c) of claim 1 is a time domain non-repeatable error value component, and in which the compensating step (e) further comprising steps of: (e8) determining the non-repeatable error value component for each of the plurality of servo sectors of each of the plurality of adjacent data tracks; (e9) transforming each of the time domain non-repeatable error value components for each of the plurality of servo sectors into a frequency domain non-repeatable error value component for each of the plurality of servo sectors of each of the plurality of adjacent data tracks; (e10) factoring each of the frequency domain non-repeatable error value components of each of the plurality of servo sectors by the transfer function for a selected one of the selected frequencies to produce a frequency domain non-repeatable error compensation value for each of the plurality of servo sectors of each of the plurality of adjacent data tracks; (e11) applying an inverse transform to each of the frequency domain non-repeatable error compensation values to produce a time domain non-re