Tension transients suppression during acceleration and/or deceleration for storage tape drive

Inactive Publication Date: 2014-03-06
IBM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0005]In one embodiment, a system includes a magnetic head, a drive mechanism for passing a magnetic tape over the magnetic head, and a controller electrically coupled to the drive mechanism, the controller being configured to: determine a reference velocity at various intervals, receive or determine a secondary velocity based at least in part on a parameter associated with a motor of the drive mechanism, determine a value representative of a difference between the reference velocity and the secondary velocity, adjust a speed of the motor of the drive mechanism for minimizing the difference b

Problems solved by technology

However, the development of small footprint, higher performance tape drive systems has

Method used

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  • Tension transients suppression during acceleration and/or deceleration for storage tape drive
  • Tension transients suppression during acceleration and/or deceleration for storage tape drive
  • Tension transients suppression during acceleration and/or deceleration for storage tape drive

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Embodiment Construction

[0027]The following description is made for the purpose of illustrating the general principles of the present invention and is not meant to limit the inventive concepts claimed herein. Further, particular features described herein can be used in combination with other described features in each of the various possible combinations and permutations.

[0028]Unless otherwise specifically defined herein, all terms are to be given their broadest possible interpretation including meanings implied from the specification as well as meanings understood by those skilled in the art and / or as defined in dictionaries, treatises, etc.

[0029]It must also be noted that, as used in the specification and the appended claims, the singular forms “a,”“an” and “the” include plural referents unless otherwise specified.

[0030]The following description discloses several preferred embodiments of magnetic storage systems, as well as operation and / or component parts thereof.

[0031]In one general embodiment, a syste...

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Abstract

In one embodiment, a system includes a controller configured to: determine a reference velocity at various intervals, receive or determine a secondary velocity based at least in part on a parameter associated with a drive mechanism motor, determine a value representative of a difference between the reference velocity and secondary velocity, adjust a speed of the motor of the drive mechanism for minimizing the difference between the reference velocity and secondary velocity, receive/determine a primary velocity based on reading information encoded on a magnetic tape, at a switching point, make the reference velocity about equal to the primary velocity, after the switching point, determine the reference velocity at various intervals, after the switching point, determine a value representative of a difference between the reference velocity and primary velocity, and adjust the speed of the motor of the drive mechanism for minimizing the difference between the reference velocity and primary velocity.

Description

BACKGROUND[0001]The present invention relates to data storage systems, and more particularly, this invention relates to a system, method and computer program product for suppressing tension transients during acceleration and deceleration.[0002]In magnetic storage systems, data is read from and written onto magnetic recording media utilizing magnetic transducers. Data is written on the magnetic recording media by moving a magnetic recording transducer to a position over the media where the data is to be stored. The magnetic recording transducer then generates a magnetic field, which encodes the data into the magnetic media. Data is read from the media by similarly positioning the magnetic read transducer and then sensing the magnetic field of the magnetic media. Read and write operations may be independently synchronized with the movement of the media to ensure that the data can be read from and written to the desired location on the media.[0003]An important and continuing goal in th...

Claims

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Application Information

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IPC IPC(8): G11B15/46G11B5/008
CPCG11B15/43B65H23/198G11B5/00821G11B5/584G11B15/46G11B15/52G11B15/54
Inventor BUI, NHAN X.OGURA, EIJI
Owner IBM CORP
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