Method and apparatus for a magnetic recording/reproducing

Details Method and apparatus for a magnetic recording/reproducing Method and apparatus for a magnetic recording/reproducing

1983-08-17

1985-12-10

McElheny, Jr., Donald

Dynamic magnetic information storage or retrieval

Record editing

H04N 5782

Patent

active

045583781

ABSTRACT:
A helical scan type magnetic tape recording/reproducing apparatus for recording/reproducing information, for example, a large amount of time-compressed audio PCM signals on a plurality of information tracks disposed in parallel to the direction of the tape running. Each of the time-compressed audio PCM signals are recorded with one of four frequencies of a pilot signal on a selected information track, and each of the time-compressed audio PCM signals recorded on the information tracks can be selectively reproduced from the corresponding information track. The apparatus includes a circuit for generating a plurality of track indicating pulses which respectively correspond to the information tracks and are phase-locked to the rotation of the rotating heads, and a circuit for selecting one of the track indicating pulses, which is supplied to control time compressing/expanding of an audio signal.

REFERENCES:
patent: 4303950 (1981-12-01), Taniguchi et al.
patent: 4353098 (1982-10-01), Heinz et al.
patent: 4390906 (1983-06-01), Furumoto et al.
patent: 4473850 (1984-09-01), Foerster

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