US 8,786,977 B2 · Induced transducer head vibration

Abstract

Vibration of a transducer slider can be used during slider fly height calibration to detect contact of the transducer slider with a disc surface. Amplification of the vibration may cause the transducer slider to tap the disc surface rather than drag across the disc surface when detecting contact with the disc surface. Amplification may be achieved by applying an in-phase AC signal to the transducer slider at the same frequency as the vibration of the slider. Reduced contact between the slider and the disc surface reduces wear on and the possibility of damage to the transducer slider and/or the disc surface. Once the fly height of the transducer slider is calibrated, the AC signal may be shifted out-of-phase with the slider vibration to dampen the slider vibration.

Claims21

Dependent claims

A system comprising:

an actuator driver configured to create a protrusion on a transducer slider and amplify a vibration mode of the transducer slider to cause the protrusion to tap against a storage media.

Dependencies are inferred from the claim text.

Induced transducer head vibration

Life of this patent

Induced transducer head vibration

Life of this patent

Abstract

Claims21