Abstract: A pulse mismatch is measured for servo stripes on magnetic tape written with a servo write head having servo head gaps with different physical sizes. The servo head gaps are separately energized to correct the pulse mismatch so servo stripes written on the magnetic tape are within a predefined tolerance.

Abstract: 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.

Abstract: An actuator for a tape drive is disclosed. The actuator has a moving mass and a non-moving mass. The non-moving mass is at least 107 grams.

Abstract: A data storage device includes a first read mechanism, a second read mechanism, and a data storage medium movable with respect to the first read mechanism and the second read mechanism. A first reference patch containing reference bits is positioned near a first corner of the data storage medium. The first read mechanism is configured to read the reference bits of the first reference patch and the second read mechanism is configured to read the reference bits of a second reference patch. The storage device also includes a controller configured to determine whether the first read mechanism and the data storage medium are offset with respect to each other based upon the reference bits read by the first read mechanism and the reference bits read by the second mechanism.

Abstract: An output is generated in response to an indication associated with movement of a moveable part in a storage device. The output is for reducing a noise component associated with the movement of the moveable part.

Abstract: A system and method for reducing resonance in a data transfer system are herein disclosed. A data transfer system comprises a bearing and a guide member. The bearing further comprises an outer ring. The guide member is arranged relative to the bearing so as to guide the outer ring for movement relative to the guide member, and to induce an axial preload in the bearing assembly.

Abstract: An actuator for a tape drive is disclosed. The actuator has a moving mass and a non-moving mass. The non-moving mass is at least 107 grams.

Abstract: In one embodiment a transducer head assembly is disclosed having a head module. The head module comprises at least one media bearer element providing a media bearer surface, and a head element block having an array of head elements. The assembly further comprises a carrier structure to carry the head module, and an actuator to move the head element block relative to the at least one media bearer element. Tape drive apparatus having actuator apparatus to cause relative displacement between head element blocks is also disclosed. A transducer head module and a method of making a transducer head assembly are also disclosed.

Abstract: Controlling positions of storage media heads is disclosed. An example storage media head position controller includes a position error filter to filter a media head position error based on a target position for a storage media head relative to a storage medium and a present media head position to generate a position signal, and a media speed monitor to modify an integration factor in the position error filter based on a media speed to adjust a phase margin of the position control loop.

Abstract: In one embodiment a transducer head assembly is disclosed having a head module. The head module comprises at least one media bearer element providing a media bearer surface, and a head element block having an array of head elements. The assembly further comprises a carrier structure to carry the head module, and an actuator to move the head element block relative to the at least one media bearer element. Tape drive apparatus having actuator apparatus to cause relative displacement between head element blocks is also disclosed. A transducer head module and a method of making a transducer head assembly are also disclosed.

Abstract: A system and method for determining the value of a longitudinal position (“LPOS”) bit of a storage medium. A system comprises a selector that selects a value for a longitudinal position (“LPOS”) bit from a plurality of possible values derived from LPOS information read from a storage medium. A quality determiner that determines a quality value for each of a plurality of LPOS values derived from the LPOS information. The selection of the value for the LPOS bit is based, at least in part, on the quality values.

Abstract: A system and method for positioning a sensor relative to a storage medium. A system includes a first sensor and a second sensor arranged so that a point of a storage medium traverses each sensor at a different time. A processor is coupled to the sensors. The processor varies the timing of a sample representing a noise signal received from the sensors in accordance with medium velocity. The processor adjusts the position of the sensors based on the sample.

Abstract: Embodiments include methods, apparatus, and systems for servo write head gap width correction. One method includes measuring a pulse mismatch for servo stripes on magnetic tape written with a servo write head having servo head gaps with different physical sizes, and separately energizing the servo head gaps to correct the pulse mismatch so servo stripes written on the magnetic tape are within a predefined tolerance.

Abstract: Various embodiments and methods relating to a pixel are disclosed.

Abstract: 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.

Abstract: A system and method for reducing resonance in a data transfer system are herein disclosed. A data transfer system comprises a bearing and a guide member. The bearing further comprises an outer ring. The guide member is arranged relative to the bearing so as to guide the outer ring for movement relative to the guide member, and to induce an axial preload in the bearing assembly.

Abstract: A system and method for determining the value of a longitudinal position (“LPOS”) bit of a storage medium. A system comprises a selector that selects a value for a longitudinal position (“LPOS”) bit from a plurality of possible values derived from LPOS information read from a storage medium. A quality determiner that determines a quality value for each of a plurality of LPOS values derived from the LPOS information. The selection of the value for the LPOS bit is based, at least in part, on the quality values.

Abstract: 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.

Abstract: A memory that includes a controller and a media including first information is provided. A first read/write mechanism is provided including an electron emitter configured to read the first information. The controller is configured to receive a first signal generated in response to the first information being read and generate a second signal configured to cause a position of the media to be adjusted relative to the electron field emitter in response to the first signal.

Abstract: A parallel data storage device includes a data storage medium having a first cluster and a second cluster. The first cluster includes a first patch and the second cluster includes a second patch. The parallel data storage device also includes a first reader for reading the first patch of the first cluster and a second reader for reading the second patch of the second cluster. A first multiplexer is used for addressing the first cluster while a second multiplexer is used for addressing the second cluster. The first and second readers are arranged in a single column such that the first reader is electrically connected to the first multiplexer and the second reader is electrically connected to the second multiplexer.