Oscillating circuit having an analog oscillating element

Details Oscillating circuit having an analog oscillating element Oscillating circuit having an analog oscillating element

2005-12-09

2010-11-23

Kinkead, Arnold (Department: 2817)

Oscillators

Electromechanical resonator

C331S1160FE, C073S514320, C324S658000

Reexamination Certificate

active

07839227

ABSTRACT:
An oscillating circuit includes an analog oscillation element. The oscillating circuit includes at least one analog-to-digital conversion device. A method is for operating an oscillating circuit, in which a mechanical oscillator oscillates at a natural frequency. The oscillation amplitude is measured and digitized. A digital control signal is generated from this with the aid of a digital amplitude controller. A driving signal is generated, in turn, from the digital control signal, the driving signal driving the mechanical oscillator with the aid of a drive unit. This control loop stabilizes the oscillation amplitude.

REFERENCES:
patent: 6817244 (2004-11-01), Platt
patent: 7616244 (2009-11-01), Kobayashi et al.
patent: 0 642 216 (1995-03-01), None
patent: 7-170152 (1995-07-01), None
patent: 10-332381 (1998-12-01), None
patent: WO 2004/023075 (2004-03-01), None
patent: WO 2004/046650 (2004-06-01), None
International Search Report, PCT International Patent Application No. PCT/EP2005/056658, dated Feb. 21, 2006.
Patent Abstracts of Japan, vol. 1999, No. 3, Mar. 31, 1999.

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