Helical scan type rotary head drum unit

Details Helical scan type rotary head drum unit Helical scan type rotary head drum unit

1993-10-26

1994-12-13

Callahan, Timothy P.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 55, 360 64, 360 7303, 360 7804, 360 7811, 360 84, G11B 5596, G11B 502, G11B 1514, G11B 5027

Patent

active

053734041

ABSTRACT:
The present invention relates to a rotary drum unit in a helical scan type magnetic recording/reproducing device for use with a video tape recorder, digital audio tape recorded, or the like and is intended to permit the stable run of the tape with highly accurate formation of track patterns. In the helical scan type rotary head drum unit of the present invention, a dislocation of the tape upon the drums having no lead is detected by tape position sensors arranged along a guide line and the rotary head is moved in the axial direction of the drum by driving a dynamic tracking actuator in a manner to correct the deviation of the tape from the guide line.

REFERENCES:
patent: 4511934 (1985-04-01), Ohira et al.
patent: 4581662 (1986-04-01), Sato
patent: 4614985 (1986-09-01), Tsuruta
patent: 4967290 (1990-10-01), Grant et al.
patent: 5051851 (1991-09-01), Sakurai

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