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Pulse Checking Circuit

IP.com Disclosure Number: IPCOM000094377D
Original Publication Date: 1966-Oct-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Veneziano, PJ: AUTHOR

Abstract

The circuit is particularly useful for checking the width, continuity and timing of a signal pulse. The signal and its complement are applied to one input of a pair of And's 11 and 12, respectively.

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Pulse Checking Circuit

The circuit is particularly useful for checking the width, continuity and timing of a signal pulse. The signal and its complement are applied to one input of a pair of And's 11 and 12, respectively.

An A sample pulse at T2-T3 is applied to the other input of circuit 12 and establishes the continuity of the signal during the selected time period. If the signal does not exist coextensive with sample A, as shown in dotted line X, an output is developed at Or 14 indicative of this fact since circuit 12 is enabled between T2 and T3.

A B sample pulse at T1-T4 is applied to the other input of gate 11. Such detects the existence of the signal, as shown in dashed line Y, outside of the time slot T1-T4 which is centered on the A sample since circuit 11 is disabled only during the B sample T1-T4. The A and B sample pulses are derived from a common clock source and are adjusted to vary the time periods T1-T2 and T3-T4 to provide any degree of accuracy required.

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