摘要:
The present disclosure provides techniques for operating a tape drive. A method of operating a tape drive includes monitoring a parameter of the tape drive during a data access operation. The method also includes detecting an access failure. The method further includes selecting a treatment based on the parameter, applying the treatment, and performing a retry.
摘要:
Electromagnetic tape head position is adjusted according to vibration indicative information received from vibration sensor secured to tape transport mechanism that supports the tape head.
摘要:
A system and method for overcoming adhesion between media and a surface of a storage device in contact with the media. A storage device comprises a media velocity detector and a media drive motor controller. The media velocity detector detects storage media velocity as torque is applied to a storage media. The media drive motor controller causes a media drive motor to apply acceleration torque to the storage media. If the media velocity detector detects no increase in media velocity as acceleration torque is applied to the storage media, then the media drive motor controller causes the media drive motor to apply a torque pulse to the storage media.
摘要:
A device for reading data from or writing data to magnetic storage media, the device comprising a head having a plurality of read/write elements for reading data from or writing data to magnetic storage media in respective tracks, and a plurality of servo elements for reading servo code from the media in respective bands different from the data tracks, the read/write elements and servo elements being arranged such that a plurality of the tracks operated on by the read/write elements are disposed between two servo bands operated on by two of the servo elements.
摘要:
The present disclosure provides techniques for operating a tape drive. A method of operating a tape drive includes monitoring a parameter of the tape drive during a data access operation. The method also includes detecting an access failure. The method further includes selecting a treatment based on the parameter, applying the treatment, and performing a retry.
摘要:
An apparatus includes plural spaced apart sensors arranged along a direction of motion of a medium, and a processing circuit to receive signals from the sensors, determine a difference of the signals, and identify an error built into the medium based on the difference.
摘要:
A system and method for overcoming adhesion between media and a surface of a storage device in contact with the media. A storage device comprises a media velocity detector and a media drive motor controller. The media velocity detector detects storage media velocity as torque is applied to a storage media. The media drive motor controller causes a media drive motor to apply acceleration torque to the storage media. If the media velocity detector detects no increase in media velocity as acceleration torque is applied to the storage media, then the media drive motor controller causes the media drive motor to apply a torque pulse to the storage media.
摘要:
To access data on a storage medium, at least three servo stripes simultaneously recorded in a servo track are read. The at least three servo stripes have different orientations on the servo track. An indication of a lateral position of a storage medium access head with respect to the servo track is generated based on reading the at least three servo stripes.
摘要:
In one embodiment, a servo positioning method includes deriving a first servo signal S1 from a first servo band, deriving a second servo signal S2 from a second servo band, defining a head element reference between the servo bands, weighting each servo signal according to a ratio of distances between the head element reference and a location on each servo band, and computing a servo control signal based on the weighted servo signals.
摘要:
The system and method for normalizing the amplitude of servo code derived signals in a disc drive, includes an improved embedded servo code format of separate magnetic dibit fields, recorded in half track steps. One magnetic dibit field is an automatic gain control field in which the magnetic head sees the same amount of magnetic dibit regardless of its position with respect to the track. A fast settling AGC loop responding to signals from the AGC field, produces a gain adjust signal while the magnetic head is still in the AGC field, which is used to normalize the amplitude of all following servo code and data code signals in that sector. The cycle of automatic gain control is repeated for each track in each sector. A sector mark following the AGC field has a magnetic dibit pattern which is fault tolerant. It is transduced in three parts to minimize error in its detection and identification and provides a timing reference for servo signals which follow. A defect dibit is recorded if the following servo gap is found to be defective during manufacture so that the next servo gap may be ignored. A track position servo code field provides signals for track following.