Patent application number | Description | Published |
20080259779 | Probe Head With Narrow Read Element - An apparatus includes a storage medium, and a transducer positioned adjacent to the storage medium, wherein the transducer includes a first electrode and a second electrode, with the width of the first electrode being less than the width of the second electrode. A method including: applying a first voltage to a transducer to write data to a storage medium, and applying a second voltage to the transducer to read data from the storage medium, wherein the magnitude of the first voltage is greater than the magnitude of the second voltage. | 10-23-2008 |
20080297289 | Simultaneous Rotational Control Using Offset Linear Actuators - An apparatus includes a movable member, and first and second actuators coupled to the movable member at positions offset from a first axis that passes through a centroid of the movable member. A controller independently controls the first and second actuators to exert a first force on the movable member in a direction generally parallel to the first axis, thereby controlling both linear and rotational orientation of the movable member. The apparatus can further include third and fourth actuators coupled to the movable member at positions offset from a second axis that passes through the centroid of the movable member, and the controller can independently controlling third and fourth actuators. | 12-04-2008 |
20090001846 | Electrostatic Surface Drive With Multiple Operating Voltages - An apparatus includes a first array of electrodes and a second array of electrodes separated by a gap, and a controller for imposing a voltage on a plurality of electrodes in the first array of electrodes, wherein the magnitude of the voltage changes in response to an operating parameter of the apparatus. | 01-01-2009 |
20090116366 | Preload Modulation to Reduce Head Motion Hysteresis - An apparatus includes a data storage media and a plurality of heads, the data storage media and heads being structured and arranged for relative movement between the heads and storage media causing the heads to move along a scan path, and an actuator for changing a magnitude of head to media force as the heads move along the scan path. A method for reducing head motion hysteresis is also provided. | 05-07-2009 |
20090154004 | Servo architecture for high areal density data storage - A track accessing mechanism includes a track accessing arm actuable by a primary actuation device for accessing concentric data tracks on a storage medium and at least one slider attached to the track accessing arm. The at least one slider includes a servo head configured to read positional information from a plurality of continuous, concentric rings radially spaced apart from each other on a storage medium and a data head configured to read and write user data to the least one concentric data track. At least a portion of each ring includes servo information. The at least one data track is positioned between each continuous, concentric ring on the storage medium. | 06-18-2009 |
20100073808 | POSITION SENSING IN DISCRETE TRACK RECORDING - In a particular embodiment, a storage system is disclosed that includes a discrete track media having a plurality of concentric data tracks to store data and including a respective plurality of non-magnetic regions to separate adjacent data tracks. The non-magnetic regions include encoded position information. The storage system further includes a controller adapted to adjust a position of a read/write head relative to a center of a particular track based on the encoded position information. | 03-25-2010 |
20100097714 | GENERATING PES USING READBACK SIGNAL DISTORTION - A data storage system includes a storage medium having a plurality of data sectors and a head that communicates with the data storage medium. The head produces a readback signal when reading information from the data storage medium. A computation unit extracts a distortion component of the readback signal and generates a position error signal from the distortion component. | 04-22-2010 |
20100157485 | WAVELETS-BASED DETECTION OF PROXIMITY BETWEEN A SENSOR AND AN OBJECT - A circuit includes a proximity detection component that applies wavelet analysis to a sensed signal from a sensor and responsively provides an output indicative of whether proximity exists between the sensor and an object that causes the sensor to produce the sensed signal. | 06-24-2010 |
20100177429 | Readback Signal-Based Head-Disc Contact Detection Using AM/FM Demodulation - A method includes: producing a readback signal using a recording head positioned adjacent to a recording medium, amplitude demodulating the readback signal to produce an amplitude demodulated signal, frequency demodulating the readback signal to produce a frequency demodulated signal, and using the amplitude demodulated signal and the frequency demodulated signal to determine contact of the recording head with the recording medium. An apparatus that can be used to implement the method is also provided. | 07-15-2010 |