Preventing tape slack in magnetic tape drive
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 20, 2001
Issued Date -
N/A
app pub date -
Apr 12, 1999
filing date -
Mar 26, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic tape drive (20) employs trolleys (40) for moving magnetic tape between a tape retracted position and a tape extracted position. A trolley position sensor (104, 106) generates a trolley position signal: A processor (100) uses the trolley position signal to control a supply reel motor (30), and thereby prevent slack in tape during a retraction operation. The processor (100) uses the trolley position signal to determine a supply reel motor reference position signal, and then uses a difference between the supply reel motor reference position signal and the supply reel motor position signal to control the supply reel motor (30).
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