| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 360770030 | By nonmagnetic sensing (e.g., optical, capacitive) | 6 |
| 20080218897 | DATA STORAGE APPARATUS, ASSEMBLING METHOD THEREOF AND APPARATUS FOR GENERATING TRACKING POSITION ERROR SIGNAL - Disclosed are a data storage apparatus, an assembling method thereof and an apparatus for generating a tracking position error signal capable of storing data using recording media formed with patterns for generating tracking position error signals to obviate errors that may be generated amidst storage of the data, wherein the patterns are formed for generating tracking position error signals on recording media before the recording media and storage are assembled to reduce the manufacturing cost and manufacturing process time. | 09-11-2008 |
| 20090002873 | Sensing Device for Sensing Installation Position of a Read Head - A sensing device for sensing installation position of a read head is assembled on the read head correspondingly to a scale and comprises at least three sensing elements and three signal generators. The three sensing elements are located on one end surface of the read head facing the scale to sense the distance between the read head and the scale. According to the different distance, the respective signal generators will send out different signals to inform the user if the read head is correctly installed, thus ensuring the precision of the installation, the sensing operation and movement of the read head. | 01-01-2009 |
| 20100039727 | E-BEAM WRITE FOR HIGH-PRECISION DOT PLACEMENT - A recording system for magnetic storage devices, including a beam column for generating a beam, a platform for moving a magnetic storage medium relative to the beam, and a signal generator for sequentially, or in a continuously alternating manner, deflecting the beam. In turn, the beam is directed according to displacement of dots on the extent of the magnetic storage medium such that dots of a plurality of dot groupings can be written to on the extent during a single pass of the beam column above the extent. | 02-18-2010 |
| 20100328812 | MAGNETIC DISK DEVICE - According to one embodiment, a magnetic disk device includes a receiver, a storage module, a determining module, and a prescanner. The receiver receives a command from a host device. The storage module stores, with respect to each of divided areas formed by dividing the recording area of a recording medium into a plurality of areas, pre-scan control information indicating at least one of the receiving time and the number of receiving times. The receiving time indicates a time at which a write command is received. The number of receiving times indicates the number of times the write command is received within a predetermined period after the power is turned on. The determining module determines the order in which pre-scan is performed on the divided areas based on at least one of the receiving time and the number of receiving times. The prescanner pre-scans the divided areas in the determined order. | 12-30-2010 |
| 20120147495 | METHOD AND APPARATUS FOR REDUCING REPEATABLE RUNOUT IN STORAGE SYSTEMS - A storage system includes a first buffer configured to store a first repeatable runout profile (RRP) for a sector of a rotating storage medium. A second buffer is configured to store a second RRP for the sector. A controller: controls a servo of the rotating storage medium based on the first RRP during a first revolution of the rotating storage medium; and learns the second RRP (i) while operating in a track-following mode, and (ii) during the first revolution. The controller ceases learning of the second RRP when one of (i) the controller is operating in a seek mode and (ii) the rotating storage medium is in an off-track state. Subsequent to the first revolution of the rotating storage medium and based on whether the learning of the second RRP was stopped during the first revolution, the controller replaces the first RRP with the second RRP in the first buffer. | 06-14-2012 |
| 20120194945 | COMPENSATION FOR CROSS-TRACK DEVIATION - Cross-track deviation of a writer from a predetermined track on a recording medium is detected. A write current is adjusted based on the cross-track deviation of the writer from the predetermined track. The adjusted write current is applied to the writer to compensate for the cross-track deviation of the writer from the predetermined track. | 08-02-2012 |
