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US 11,237,195 B2Granted
Frequency estimation
AssigneeIntel Corporation
InventorsSarit Zur, Igal Kushnir, Gil Horovitz, Rotem Banin, Sergey Bershansky
Life of this patent
Estimating the term…
Abstract
A frequency estimator for estimating a frequency, including a counter configured to count an integer number of full clock cycles during a measurement time window; a Time-to-Digital Converter (TDC) configured to measure a fraction of a clock cycle during the measurement time window; and a processor configured to determine the estimated frequency based on the counted number of full clock cycles and the measured fraction of the clock cycle.
Claims14
A frequency estimator for estimating a frequency of a signal, comprising:
- a counter configured to count an integer number of full clock cycles of the signal during a measurement time window;
- a Time-to-Digital Converter (TDC) configured to measure a fraction of a clock cycle of the signal during the measurement time window;
- a synchronizer configured to generate an enable synchronization signal by shifting an edge timing of an enable signal derived from a reference clock to correlate with an edge timing of the frequency to be estimated, wherein the enable synchronization signal defines the measurement time window;
- and
- a processor configured to determine the estimated frequency of the signal based on the counted number of full clock cycles and the measured fraction of the clock cycle.
2 more elements
A method of estimating a frequency of a signal, comprising:
- counting, by a counter, an integer number of full clock cycles of the signal during a measurement time window;
- measuring, by a Time-to-Digital Converter (TDC), a fraction of a clock cycle during the measurement time window;
- generating, by a synchronizer, an enable synchronization signal by shifting an edge timing of an enable signal derived from a reference clock to correlate with an edge timing of the frequency to be measure, wherein the enable synchronization signal defines the measurement time window;
- and
- determining, by a processor, the estimated frequency of the signal based on the counted number of full clock cycles and the measured fraction of the clock cycle.
2 more elements
Dependencies are inferred from the claim text.