Metastability glitch detection

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United States of America Patent

PATENT NO 9673819
SERIAL NO

14473922

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Importance

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Abstract

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This application discloses a system to detect meta-stable glitches in a signal, such as an output of latch or other storage element. The system can include a sampling circuit configured to sample an output of a storage element. The system can include a mono-shot circuit configured to monitor the output of the storage element and generate a pulse when the monitored output of the storage element differs from the sampled output. The system can include a drive circuit configured to generate a glitch signal based, at least in part, on the sampled output, and to output the glitch signal in response to the pulse from the mono-shot circuit. The system can include an error detection circuit configured to receive the sampled output from the sampling circuit and the glitch signal from the drive circuit, and to generate an error signal when the sampled output differs from the glitch signal.

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Patent Owner(s)

  • MENTOR GRAPHICS CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mandavilli, Srinivas Hyderabad, IN 5 103
Mathews, Pradish Noida, IN 3 16
Potts, Henry Ft. Collins, US 16 290
Sehgal, Rajeev Noida, IN 6 247
Singh, Ajit Delhi, IN 65 1426

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