Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1979-11-05
1983-01-25
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
242186, 242203, 318327, 360 722, G11B 1546, G11B 1920
Patent
active
043706835
ABSTRACT:
The tape transport mechanism, in a tape drive for retrievable informational data storage, is provided with a cross-coupled tape speed control servomechanism, achieving controlled bidirectional movement and stopping of tape, without switching, and requiring only one polarity of power source for the motive elements.
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patent: 4091314 (1978-05-01), Johnson
patent: 4156257 (1979-05-01), Roberts
patent: 4157488 (1979-06-01), Allan
IBM Tech. Disc. Bull., E. P. Kollar et al., Reel-to-Reel Tape Unit With Decreased Acceleration Time, vol. 14, No. 8, Jan. 1972, pp. 2331-2332.
IBM Tech. Disc. Bull., R. L. Colburn et al., Bidirectional PWM Motor Speed Control, vol. 14, No. 2, Jul. 1971, pp. 388-389.
IBM Tech. Disc. Bull., J. A. Weidenhammer, Electrical Differential Tape Drive Systems, vol. 12, No. 11, Apr. 1970, p. 1805.
Greig George H.
Pettigrew Archibald M.
Burroughs Corporation
Chung Edmund M.
Eddleman Alfred H.
Peterson Kevin R.
Rasmussen David G.
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