G - Physics – 01 – R
Patent
G - Physics
01
R
328/165
G01R 29/00 (2006.01) G01R 29/033 (2006.01)
Patent
CA 1128148
D-21,030 A FAST REDUNDANT PULSE DENSITY ANALYZER by Gerard J. Miille ABSTRACT OF THE DISCLOSURE A self-checking pulse density analyzer includes substantially similar first and second threshold detection circuits, each of which have one input connected to receive incoming pulse information to be analyzed, and each of which provide the same binary signal state at a separate output terminal, when the pulse density reaches a predetermined level. Each output terminal is connected to a separate input terminal of a threshold equalizing circuit and to respective inputs of first and second gating circuits. The threshold equalizing circuit is activated by the binary signal from the faster acting threshold detection circuit to speed up the operation of the slower threshold detection circuit and, thus, minimize the difference in operating time between the two circuits. These two nearly simultaneous binary indications cause the first gating circuit to operate and, thus, provide a particular binary output signal indicative thereof. When the binary indications are substantially separated in time, or if one does not occur, the second gating circuit is effectuated to indicate a failure of one threshold detection circuit.
319902
Gte Automatic Electric Laboratories Incorporated
R. William Wray & Associates
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