Techniques for detecting and correcting errors on a ring oscillator
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United States of America Patent
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Sep 26, 2017
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app pub date -
Feb 29, 2016
filing date -
Feb 29, 2016
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Abstract
A circuit may include a ring oscillator circuit and monitoring circuitry. The ring oscillator circuit has a group of inverters in a loop, whereby the group of inverters includes first, second, and third output nodes. The monitoring circuitry may monitor for error events in a signal that has passed through the inverters from any one of the first, second, or third output nodes, and may generate first and second monitoring circuitry outputs. The circuit may further include an error correction circuit that produces an error correction output based on the first and second monitoring circuitry outputs. Accordingly, the monitoring circuitry may generate first and second updated monitoring circuitry outputs based on the error correction output. The first and second updated monitoring circuitry outputs may be logically combined using a logic circuit to reset the signal that has passed through the loop.
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