Head drum apparatus

Details Head drum apparatus Head drum apparatus

1993-11-23

1995-10-31

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7716, 360 75, 360107, G11B 2102

Patent

active

054635063

ABSTRACT:
A head drum apparatus includes a cylindrical piezoelectric ceramic member formed of a polarized ceramic material and having inner and outer peripheral surfaces. A plurality of electrodes are formed on at least one of the inner and outer peripheral surfaces of the piezoelectric ceramic member. The piezoelectric ceramic member vibrates in response to an AC voltage applied to the electrodes. A cylindrical stationary head drum having an inner peripheral surface and an outer peripheral surface around a portion of which a magnetic tape is wound is caused to vibrate in a bending mode under vibration of the piezoelectric ceramic member. The stationary head drum includes a cylindrical stationary portion, a cylindrical vibratory portion and a cylindrical thin wall portion provided between the stationary portion and the vibratory portion. The piezoelectric ceramic member is coupled to the vibratory portion so that the vibratory portion is caused to vibrate under vibration of the piezoelectric ceramic member. Tape data indicative of types of the tapes is read out for driving the piezoelectric ceramic member by the AC voltage having a frequency and an amplitude determined on the basis of the tape data.

REFERENCES:
patent: 5319506 (1994-06-01), Kojima et al.

Affiliated with

Also associated with

Rating

Head drum apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1777946