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US 7,679,466 B1Granted
Counter-based resonator frequency compensation
AssigneeDiscera, Inc.
InventorsKenneth R. Cioffi, Michael Simoneau, Didier Lacroix, Wan-Thai Hsu
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Abstract
Disclosed herein is a timing device that includes a resonator device to generate a resonator output signal at a frequency offset from a desired frequency, a counter configured to generate an extraction signal in accordance with the frequency offset, and a timing signal generator configured to track time with a count based on the resonator output signal and modified by the extraction signal downward to reach the desired frequency.
Claims11
A timing device, comprising:
- a resonator device to generate a resonator output signal at a frequency above a desired frequency;
- a calculator to determine a corrected frequency offset to compensate for an initial frequency offset of the resonator device and to adjust for frequency variation during operation of the resonator device;
- a counter configured to generate an extraction signal in accordance with the corrected frequency offset;
- and
- a timing signal generator configured to track time with a count based on the resonator output signal and modified by the extraction signal downward to reach the desired frequency.
2 more elements
A method of generating a timing signal of a desired frequency, the method comprising the steps of:
- generating a resonator output signal from a resonator device at a frequency above the desired frequency;
- determining a corrected frequency offset to compensate for an initial frequency offset of the resonator device and to adjust for frequency variation during operation of the resonator device;
- generating an extraction signal in accordance with the corrected frequency offset;
- generating the timing signal with a count based on the output signal and modified by the extraction signal downward to reach the desired frequency.
1 more element
Dependencies are inferred from the claim text.