Head-tape alignment apparatus with a tape edge find operation

Details Head-tape alignment apparatus with a tape edge find operation Head-tape alignment apparatus with a tape edge find operation

1986-06-25

1989-01-31

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

360 46, 360 75, 360 7813, 360 7712, G11B 556, G11B 5584

Patent

active

048020303

ABSTRACT:
A solution to accurately aligning a read-write head over a previously written data track on both a write protected and not write protected tape is disclosed. A control unit, preferably a programmed microprocessor, electronically provides a sequence of control outputs to move the tape and step the head to locate an edge of the tape. The control unit then moves the head a fixed distance to be over a selected data track. A threshold circuit controls the readout of data from the head of the tape in such a way as to improve edge find reliability.

REFERENCES:
patent: 4422111 (1983-12-01), Moeller et al.
patent: 4476503 (1984-10-01), Solhjell
patent: 4586094 (1986-04-01), Chambors

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