Oscillators – Electromechanical resonator – Crystal
Reexamination Certificate
2008-07-22
2010-10-05
Pascal, Robert (Department: 2817)
Oscillators
Electromechanical resonator
Crystal
C331S109000, C331S1160FE, C331S173000, C073S514340, C310S329000
Reexamination Certificate
active
07808334
ABSTRACT:
An oscillation driver circuit that drives a physical quantity transducer includes a one-input/two-output comparator. The one-input/two-output comparator includes a shared differential section that compares a voltage signal input from a drive current/voltage conversion amplifier circuit with a given voltage, a first output section that receives a signal output from the differential section, variably adjusts a voltage amplitude of the received signal, and outputs the resulting signal, and a second output section that receives the signal output from the differential section, and outputs a synchronous detection reference signal of which the voltage amplitude is fixed.
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Kanai Masahiro
Otsuka Eitaro
Yoshida Naoki
Gannon Levi
Oliff & Berridg,e PLC
Pascal Robert
Seiko Epson Corporation
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