Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1979-01-22
1981-06-16
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 64, G11B 554, G11B 2108
Patent
active
042741203
ABSTRACT:
Information is recorded in several parallel tracks with a recording device on a recording tape having edges parallel to such tracks. The tape is curved between the parallel edges. The recording device is applied to the tape in information transducing relationship and information is recorded serially in the parallel tracks by moving the tape relative to the applied recording device in a direction parallel to the tape edges. Information is selectively applied to the recording device for recordation on the tape, the recording device is restrained against any movement having a component extending away from either of the edges as long as an information recording takes place in any of the tracks. The mentioned restraint is selectively released between recordations in different tracks and the recording device is incremented angularly along the curvature of the curved tape from one to another of the different tracks.
The same principle is applied to a reproduction of information from several parallel tracks on a tape.
REFERENCES:
patent: 2751274 (1956-06-01), Andrews
patent: 3361878 (1968-01-01), Patterson et al.
patent: 4156258 (1979-05-01), Schoettle et al.
Bell & Howell Company
Wolff John H.
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