Characteristic automatic compensating apparatus,...

Details Characteristic automatic compensating apparatus,... Characteristic automatic compensating apparatus,...

2004-02-19

2009-06-16

Chang, Joseph (Department: 2817)

Oscillators

Frequency stabilization

Temperature or current responsive means in circuit

C331S00100A

Reexamination Certificate

active

07548130

ABSTRACT:
A characteristic automatic compensating apparatus of an oscillator includes oscillating means, temperature detecting means, characteristic determining means for measuring a drift value of an oscillating frequency while changing the temperature and for determining a coefficient of an approximated equation representing temperature and the drift value, storing means for storing the coefficient, drift value predicting means, and characteristic updating means for updating the coefficient by the measured drift value of the oscillating frequency and the temperature, wherein the characteristic determining means represents the approximated equation representing the characteristic of the temperature detected by the temperature detecting means and the drift value of the oscillating frequency of the oscillating means by a polynomial.

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Communication from European Patent Office regarding corresponding application.
International Search Report; PCT/JP2004/001872; Feb. 19, 2004; ISA/JP.

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