Method of reading recorded information from a magnetic tape that

Details Method of reading recorded information from a magnetic tape that Method of reading recorded information from a magnetic tape that

1998-08-14

2000-10-31

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7712, G11B 500

Patent

active

061411744

ABSTRACT:
A method of multi-channel magnetic tape recording and reading that compensates for track pitch changes. The method utilizes a closed loop servo system to adjust lateral and azimuth position of the recording head assembly. Servo information is written at a slight azimuth angle, adjacent the outer most tracks of a band of tracks. The recording angle being based on a dimensional stability coefficient of the tape. After data is written at the initial angle, the azimuth angle of the head is rotated through a predetermined range of angle during read-only to align the outermost read gaps with the servo tracks. By doing so, signal strength is maximized across all tracks, even if track pitch changes.

REFERENCES:
patent: 4539615 (1985-09-01), Aari et al.
patent: 4609959 (1986-09-01), Rudi
patent: 5371638 (1994-12-01), Saliba
patent: 5450257 (1995-09-01), Tran et al.
patent: 5523904 (1996-06-01), Saliba
patent: 5973874 (1999-10-01), Panish et al.

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