Magnetic Tape Signature Signal Injection Device.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent relates to an apparatus for injecting a signature signal on a magnetic tape, comprising a signature signal generator connected to a switching system. The switching system connects the signature signal to the recorder inputs while disconnecting the normal recorder inputs. A timer is located in the switching system to permit the injection of the signature signal for a specific time period.
- Recording and Playback Devices