Method and apparatus for recording a digital information signal

Details Method and apparatus for recording a digital information signal Method and apparatus for recording a digital information signal

1984-02-28

1987-03-17

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 27, 360 66, G11B 2110, G11B 502, G11B 503

Patent

active

046512390

ABSTRACT:
In a system for recording and reproducing digital signals on a magnetic tape using a rotary head, in which the signals are recorded as a series of slanted tracks without guard bands between adjacent slanted tracks, a pilot signal that was recorded during the recording process is used to control the tracking of the playback head. The pilot signal is recorded at a specific position in a specific pilot signal record region, independent from the region of the track at which the informational signal is recorded and the pilot signal is arranged at a predetermined position or positions being a specified distance from an end of each track in its longitudinal direction and only alternate tracks receive such pilot signal. When the recorded tracks are reproduced by a rotary playback head having a tracing width that is greater than the width of the track, the pilot signals from the adjacent tracks will be detected and can be compared in level, with the comparison output being used to control the tracking of the rotary playback head.

REFERENCES:
patent: 3263031 (1966-07-01), Welsh
patent: 4439799 (1984-03-01), Haubrich et al.
patent: 4490756 (1984-12-01), Dost et al.
patent: 4528605 (1985-07-01), Hiraguri

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