Dynamic magnetic information storage or retrieval – Head – Core
Patent
1976-12-03
1978-07-18
Cardillo, Jr., Raymond F.
Dynamic magnetic information storage or retrieval
Head
Core
1791001PS, 1791001VC, 360 12, G11B 1518, G11B 2722, G11B 3100
Patent
active
041017420
ABSTRACT:
A plurality of audio message units are each comprised of a control circuit which receives intervaled timing pulses from a clock. The control circuit sends a start signal to a tape player. An audio detect circuit is connected to the audio output of the tape player and supplies a run and stop signal to the player through the control circuit upon the detection of an audio signal at the tape player output and its subsequent termination, respectively. Speakers are connected to the audio output of the tape player of each respective message unit to broadcast audio messages preprogrammed on the tapes of each tape player. A programmer for programming the tapes has a tape recorder with a microphone and a digital clock with means to set and incrementally advance displayed time to the time a particular message is to be broadcast by a particular audio message unit. The system may include a security message unit to broadcast audio messages reflecting the existence of a security violation. Each message unit may also include an automatic rewind circuit.
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Clark Ruel Ross
Craig Edwin D.
Cardillo, Jr. Raymond F.
Craig Edwin D.
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