Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1988-06-13
1990-05-01
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 84, 360 85, G11B 552, G11B 2118
Patent
active
049223593
ABSTRACT:
A rotary digital audio tape recorder having a rotary cylinder of a predetermined diameter driven at a predetermined rotation rate, a pair of recording/reproducing heads disposed in proximity of each other on the rotary cylinder, and a magnetic tape kept in contact with the peripheral surface of the rotary cylinder through a predetermined lap angle, wherein a recording or reproducing operation is performed on the magnetic tape with the rotation of the cylinder and the relative motion of the magnetic tape. The rotation rate of the cylinder and the lap angle of the magnetic tape thereto are selectively so set as to retain interchangeability with any magnetic tape recorded or reproduced by a conventional rotary cylinder with two magnetic heads disposed opposite to each other at an angular interval of 180.degree.. Since the diameter of the rotary cylinder is thus rendered smaller, the whole structure can be dimensionally reduced while a sufficiently high head output is obtainable with a satisfactory signal-to-noise ratio being retained.
REFERENCES:
patent: 4318146 (1988-03-01), Ike et al.
patent: 4646169 (1987-02-01), Shimpuku
patent: 4757397 (1988-07-01), Zaitsu et al.
patent: 4794473 (1988-12-01), Kawasaki
Alps Electric Co. ,Ltd.
Klivans Norman L.
Shoup Guy W.
Wolff John H.
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