Reel servo for tape transport
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United States of America Patent
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-
Apr 23, 1985
Grant Date -
N/A
app pub date -
Sep 15, 1983
filing date -
Sep 17, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A supply reel servo for a tape transport in which a motor-driven capstan of low inertia draws tape past a cylindrical scanning drum includes a tension servo arm which provides a signal denoting tape tension in a loop adjacent the supply reel. This signal is compared with a reference to develop an error signal to control the supply reel motor. The reference is modified in response to a signal which represents the energization of the capstan motor and accordingly the torque output thereof so as to provide automatic compensation for variation in tape tension at the scanning drum.
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