Tape tension control for a magnetic recording and reproducing ap

Details Tape tension control for a magnetic recording and reproducing ap Tape tension control for a magnetic recording and reproducing ap

1994-05-26

1996-01-02

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 71, G11B 1543

Patent

active

054814170

ABSTRACT:
It is an object of the invention to realize a DTF control in a wide frequency range and a noiseless high-speed replay at several tens of times the normal relay speed without degradation of picture quality. It is also an object to provide an optimum contact between the head and the tape at all times by performing the tension control with high precision and in wide frequency range.
A pair of supply side stationary pins 10a.sub.1, 10a.sub.2 and a supply side movable pin 9a driven by a supply side tape actuator 11a are provided on the magnetic tape supply side of the head cylinder that has a rotary head H. By controlling the supply side tape actuator 11a to move the movable pin 9a, the tension of the magnetic tape T at the head cylinder can be controlled. When the tape is replayed at speed different from the recording speed, the supply side tape actuator 11a and a takeup side tape actuator are operated differentially from each other to perform a good tracking.

REFERENCES:
patent: 5153785 (1992-10-01), Muranushi et al.
Introduction of Magnetic Recording Technology by Yokoyama, published by Sogo Denshi Shuppansha, p. 187.
"Noiseless Trick-Play Techniques Using Piezoelectric Ceramic Actuator for VTR's" by M. Kobayashi et al National Technical Report, vol. 28, No. 3, Jun. 1982, pp. 419-425 and 427-428.

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