Video head position control

Details Video head position control Video head position control

1984-04-12

1986-12-16

Faber, Alan

Dynamic magnetic information storage or retrieval

Record editing

310313A, 310313B, 360 77, G11B 2110

Patent

active

046301356

ABSTRACT:
In a video head position control apparatus utilizing a bimorph element (1), one or two surface acoustic wave oscillators (13, 15) is (are) formed by using piezoelectric element(s) (3, 4) of the bimorph element (1) for measuring displacement of a video head (5) attached to tip portion of the bimorph element (1) by detecting oscillating frequency variation. The oscillating frequency is used to detect an error of the position of the video head (5) with respect to a desired position indicated by a control voltage (V.sub.C1) which is fed from a video tape recorder such that peak voltage of the control voltage changes throughout different video tape velocity on various operating modes. The control voltage is thus corrected by an error voltage (V.sub.E) so that a corrected voltage is applied to the bimorph element (1) to cause the same to accurately position the video head (5).

REFERENCES:
patent: 3878477 (1975-04-01), Dias
patent: 3883831 (1975-05-01), Williamson
patent: 4080636 (1978-03-01), Ravizza
patent: 4130813 (1978-12-01), Sandy
patent: 4361857 (1982-11-01), Sakamoto
patent: 4404605 (1983-09-01), Sakamoto

Affiliated with

Also associated with

Rating

Video head position control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Video head position control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video head position control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-248993