Frequency-locked and phase-locked loop-based clock glitch detection for security

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12191868
APP PUB NO 20240204785A1
SERIAL NO

18595042

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Abstract

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A glitch detection device includes an oscillator to generate multiple local clocks of multiple different phases and a sampling circuit to oversample, using the multiple local clocks, a system clock to generate multiple samples of the system clock. The device further includes a glitch detector to monitor a variation in pulse width of the system clock based on counting the multiple samples and to report a glitch in response to detecting a variation in the pulse width that exceeds a threshold value.

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Patent Owner(s)

  • NVIDIA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nedovic, Nikola San Jose, US 76 530
Song, Sanquan Los Altos, US 24 94
Tell, Stephen G Chapel Hill, US 27 497

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