Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1979-12-14
1982-06-01
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
242186, 360 723, G11B 1906, G11B 2716, G11B 1554
Patent
active
043331157
ABSTRACT:
A tape transport control system for monitoring the amount of tape on a tape reel using a first transducer means to provide a signal representative of the rotational speed of the tape reel. A fixed frequency oscillator is arranged to provide signals to be counted by a programmable variable modulo counter. The counter is programmed to start a countdown at a count preset by a digital word applied from a speed control selector for the tape transport. An output signal from the counter indicative of a fully decremented count status is applied to a two input AND gate which has as a second input signal an output signal from the reel transducer. An output signal from the AND gate is applied to the speed control selector to produce an interruption of an energizing signal to a capstan motor drive. In a reel-to-reel tape transport system, the control by the tape reel sensing circuit is switched from a transducer monitoring one reel to a transducer monitoring the other reel by a mode control selector whereby a transducer sensing the operation of a tape supply reel is used to control the operation of the AND gate.
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Burton Lockwood D.
Eddleman Alfred H.
Halista Mitchell J.
Honeywell Inc.
Marhoefer Laurence J.
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