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US 2011/0210796 A1Published application
Oscillation circuit and frequency-correcting oscillation circuit
AssigneeSeiko Epson Corporation
InventorsMasayuki ISHIKAWA, Kensaku ISOHATA, Takehiro YAMAMOTO
Life of this patent
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Abstract
An oscillation circuit includes: an oscillator that includes a vibrator and outputs an oscillation signal; an F/V converter that converts the oscillation signal into a voltage corresponding to a frequency of the oscillation signal; and a memory circuit that stores frequency correcting information for correcting the frequency of the oscillation signal.
Claims9
An oscillation circuit comprising:
- an oscillator that includes a vibrator and outputs an oscillation signal;
- an F/V converter that converts the oscillation signal into a voltage corresponding to a frequency of the oscillation signal;
- and
- a memory circuit that stores frequency correcting information for correcting the frequency of the oscillation signal.
1 more element
A frequency-correcting oscillation circuit comprising:
- an oscillator that includes a vibrator and outputs an oscillation signal;
- an F/V converter that converts the oscillation signal into a voltage corresponding to a frequency of the oscillation signal;
- a memory circuit that stores frequency correcting information for correcting the frequency of the oscillation signal;
- and
- a frequency correcting circuit that corrects the frequency of the oscillation signal on the basis of the output voltage of the F/V converter and the frequency correcting information.
2 more elements
Dependencies are inferred from the claim text.