A tape drive may calculate a slope for each of the timing-based-servo marks in a timing-based-servo group. The timing-based-servo marks are arranged in one or more M-patterns. The tape drive may average the slope for each of the timing-based-servo marks across the one or more M-patterns. The tape drive may generate a least-squares assessment of the averaged slope. The tape drive may determine, from the least-squares assessment, whether the averaged slope is demonstrative of tape-creep.

A tape drive may calculate a slope for each of the timing-based-servo marks in a timing-based-servo group. The timing-based-servo marks are arranged in one or more M-patterns. The tape drive may average the slope for each of the timing-based-servo marks across the one or more M-patterns. The tape drive may generate a least-squares assessment of the averaged slope. The tape drive may determine, from the least-squares assessment, whether the averaged slope is demonstrative of tape-creep.

A data storage device is disclosed comprising a first head actuated over a first disk surface, wherein the first head comprises a write coil and a write-assist component. First data is written to the first disk surface using the write coil and the write-assist component of the first head. An electrical bias is applied to the write-assist component of the first head to physically damage the write-assist component, thereby rendering the first disk surface read-only.

A system including a phonograph record implement having a phonograph record with a plurality of grooves operable for recording audio data. A record player device is configured to read the audio data contents of said phonograph record implement. A wheel appliance moves or rotates on said phonograph record implement to produce an audio signal and a needle appliance reads or translates a plurality of grooves to an audio signal as the record player device moves around the stationary phonograph record. A speed control switch is operable for selecting at least one preset speed from a plurality of varying preset speeds for said record player device to operate. A wireless transmitter, which transmits the audio signal to an external receiver, which receives the audio signal produced from said stationary phonograph record for listening remotely.

The present invention provides a method of feeding an agent, capable of stabilizing a remaining agent of a feeding part in characteristic and amount just before definitively feeding an agent to each definitive portion. The method includes intermittently moving a feeding part to a plurality of definitive portions defined on a structural object to definitively feed a flowable agent with a predetermined amount to each one of the definitive portions. The structural object includes a semi-finished product part with the definitive portions and a frame to be separated from the semi-finished product part. The frame includes a waste portion for the flowable agent. The waste portion has a same form as the definitive portions. The feeding part wastefully feeds the flowable agent to the waste portion with a same amount as said predetermined amount and thereafter starts the intermittently moving for the definitively feeding of the flowable agent.

In a disk drive apparatus, a first time period is determined, during which a first head driven by a first actuator will be performing a first disk access operation. A second time period is determined, during which a second head driven by a second actuator will be performing a second disk access operation. The first and second actuators are independently movable such that the first and second disk access operations are capable of being performed in parallel. If it is determined that the second disk access operation will impact servo control of the first disk access operation, at least one of the first and second disk access operations is changed to reduce the impact to the servo control of the first disk access operation.