Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1978-12-19
1980-07-08
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 64, 360 84, 36013024, G11B 552, G11B 1512
Patent
active
042120420
ABSTRACT:
A device for recovering video information from magnetic tape, which comprises a magnetic head assembly arranged within a current-carrying casing in a manner allowing rotation of the magnetic heads with a hollow shaft. The magnetic heads are electrically coupled to the winding of a slip-ring rotor. A closed three-dimensional coupling turn couples the rotor winding to the winding of a slip-ring stator. The stator winding is electrically coupled to a reproduction amplifier through a step-up transformer and a first reproduction signal correcting circuit. The output of the reproduction amplifier is connected to a second reproduction signal correcting circuit inductively coupled to a short-circuited turn which is partly arranged within the current-carrying casing. The short-circuited turn has a lower inductance as compared to the closed three-dimensional coupling turn.
REFERENCES:
patent: 4031558 (1977-06-01), Kusaka
Koshelev Alexandr G.
Kretov Svyatoslav D.
Lavrentiev Konstantin A.
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