Magnetic tape having multiple tracks and recording apparatus the

Details Magnetic tape having multiple tracks and recording apparatus the Magnetic tape having multiple tracks and recording apparatus the

1983-12-05

1986-05-27

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Record copying

G11B 586

Patent

active

045919275

ABSTRACT:
A magnetic tape is simultaneously recorded with digital signals on one or a plurality of forward recording tracks and reverse recording tracks thereon as the tape travels in a predetermined direction. The digital signals are reproduced from the forward recording tracks when the tape travels in a direction from one end to another end thereof, and the digital signals are reproduced from the reverse recording tracks when the tape travels in a direction from the other end to the one end thereof. The digital signals are recorded with the phase of the digital signals which are recorded on the forward or reverse recording tracks, relatively advanced with respect to the phase of the digital signals which are recorded on the reverse or forward recording tracks, so that solitary reproduced waveforms which are reproduced from the forward and reverse recording tracks respectively have substantially the same assymmetry of zeros or the same symmetry of zeros. The first recording tracks are scanned upon reproduction in a direction opposite to the predetermined direction in which the tape traveled upon recording, and the second recording tracks are scanned upon reproduction in a direction which is the same as the predetermined direction in which the tape traveled upon recording.

REFERENCES:
patent: 3298006 (1967-01-01), Milenkovic
patent: 3315242 (1967-04-01), Haddad
patent: 3677554 (1972-07-01), Smith et al.
patent: 4101938 (1978-07-01), Hanai

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