Tape transport

Details Tape transport Tape transport

1980-11-17

1983-08-23

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 71, G11B 1552, G11B 1543

Patent

active

044007450

ABSTRACT:
Magnetic tape transport using DC current drive variable speed motors directly coupled to take-up and supply reels between which a tape is moved under tension. A crystal controlled PLL is referenced to a tape reference signal during steady speed operation and to a tape drive tachometer signal during start, stop and speed change cycles. The PLL controls the take-up motor drive amplifier which has a current drive output for developing motor torque. A second tension servo loop controls the supply reel motor drive amplifier which also supplies a current drive amplifier to develop motor torque. The tension servo loop has a major feedback signal component C2 which sums the motor currents as representative of the sum of the torques in the motors and the tension resulting in the tape. Additional tension components representing a steady bias C1, a take-up follower C3 and rapid deceleration signal C4 are also employed.

REFERENCES:
patent: 3596005 (1971-07-01), Hamilton
patent: 3913134 (1975-10-01), Sargunar
patent: 3990108 (1976-11-01), Suga et al.
patent: 4156257 (1979-05-01), Roberts
patent: 4163532 (1979-08-01), Sakai

Affiliated with

Also associated with

Rating

Tape transport does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1949823