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US 3,938,183 AGranted
Magnetic tape signature signal injection device
AssigneeThe United States of Amercia as represented by the Secretary of the Navy
InventorsDonald R. Hust, Emory D. Heberling, deceased
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Abstract
An apparatus for injecting a signature signal on a magnetic tape comprising 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.
Claims13
An apparatus for injecting a signature signal onto a magnetic tape comprising:
- a. means for generating a signature signal having an output upon which said signature signal appears;
- b. a plurality of magnetic tape recorder channel input lines one each connected between one pair each of a plurality of first and second recorder inputs;
- c. switching means for connecting said signature signal generating means output to one one of said plurality of second recorder inputs and disconnecting said plurality of channel input lines from said plurality of second recorder inputs;
- and
- d. timing means communicating with said switching means for allowing said switching means to inject said signature signal and disconnect said channel inputs for a specific time period.
2 more elements
An apparatus for injecting a signature signal onto a magnetic tape comprising:
- a. means for generating a signature signal and a synchronization signal having a first output upon which said signature signal appears and a second output upon which said synchronization signal appears;
- b. a plurality of magnetic tape recorder channel lines one each connected between one pair each of a plurality of first and second recorder inputs;
- c. switching means for connecting said first output of said signature and synchronization signal generating means to all but one of said plurality of second recorder inputs, connecting said second output of said signature and snychronization signal generating means to said remaining second recorder input and disconnecting said plurality of recorder channel lines from said plurality of second recorder inputs.
Dependencies are inferred from the claim text.