Digital circuit to detect presence and quality of an external timing device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11188114
APP PUB NO 20210041905A1
SERIAL NO

16537073

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Abstract

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A system for determine presence or quality of an external timing device is provided. The system may include a circuit (e.g., in a field-programmable gate array (FPGA)) having an input, an oscillator, an edge detector, a bit counter, and a calculator element. In some examples, the input may receive an input signal under test. The oscillator may advance a timer at a known rate to facilitate generation of clock samples for the input signal under test. The edge detector may measure edges of the input signal under test based on the clock samples. The circuit may include at least one bit counter to store a count associated with the measured edges for a shorter interval timer period and a longer interval timer period. The calculator element may determine presence or quality of an external timing device based on the count.

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Patent Owner(s)

  • VIAVI SOLUTIONS INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Milton, Jonathan Paul St Albans, GB 2 1

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