Anticipating servo controller for controlling magnetic tape move

Details Anticipating servo controller for controlling magnetic tape move Anticipating servo controller for controlling magnetic tape move

1980-10-23

1982-07-27

Christian, Leonard D.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

242 56R, G11B 1506, G11B 2312

Patent

active

043413625

ABSTRACT:
An electronic circuitry for regulating magnetic tape movement during loading of a predetermined length of tape paid out from a supply spool and wound into a tape cassette. The tension of the tape along its path of movement is controlled by a pair of vacuum column tension members providing a different tension at the supply spool than at the take up spool. A driving member interposes the two vacuum tension members for regulating tape movement between the same. Electronic circuitry drives the take-up spool of the cassette, the supply spool and the interposing driving member, formulating drive signals in response to the length of tape contained at the separate tension members and in anticipation of the need for tape in view of the instantaneous speed in which the tape is being pulled from a separate tension member.

REFERENCES:
patent: 3112473 (1963-11-01), Wicklund et al.
patent: 3648134 (1972-03-01), Audeh et al.
patent: 3809328 (1974-05-01), Cope et al.
patent: 3848825 (1974-11-01), Zielke
patent: 3940080 (1976-02-01), Bennett

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