Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Tape record
Patent
1980-09-29
1983-05-31
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Tape record
360 69, G11B 1568, G11B 1900
Patent
active
043863825
ABSTRACT:
A time independent controller for a novel cassette changer is shown. A cassette changer including a plurality of limit switch inputs (210) and means for detecting occurrence of a failure during a change cycle. The total angular displacement of a driving motor is detected (422) and upon reaching a predetermined angle of displacement (437) a test for an appropriate input (418) is provided. In one disclosed embodiment a read only memory (465) determines the controller state (461-463). Apparatus (426, 427, 450) which is responsive only to the limit switch inputs closing in a pair wise proper sequence is also shown.
REFERENCES:
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patent: 4071857 (1978-01-01), Whitney et al.
patent: 4092679 (1978-05-01), Sander
patent: 4092685 (1978-05-01), Sander et al.
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patent: 4233638 (1980-11-01), Bolick, Jr. et al.
patent: 4271440 (1981-06-01), Jenkins et al.
Cutler Timothy D.
Titus IV Theodore
Eddleman Alfred H.
Lanier Business Products, Inc.
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