Controlling the transport of a tape within a tape transport system
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United States of America Patent
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Mar 17, 2015
Grant Date -
Mar 5, 2015
app pub date -
Aug 4, 2014
filing date -
Aug 29, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A control device for controlling tape transport within a tape transport system is disclosed. The control device includes a determination unit, which includes at least a first servo channel and a second servo channel for determining a first lateral position of a tape relative to the head, and for determining a difference between the first and second lateral positions. A computing unit computes a number of unsupported wraps of the tape as a function of the lateral position difference, wherein the number of unsupported wraps corresponds to the number of layers of the tape around the take-up reel having air layers in-between, and computes a spring constant of the tape as a function of the number of unsupported wraps, a radius of the take-up reel and a nominal tape path length. A calibration unit calibrates at least one unit of the tape transport system dependent on the spring constant.
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