Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Reexamination Certificate
2007-05-01
2007-05-01
Kwok, Helen (Department: 2856)
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
C073S504140
Reexamination Certificate
active
11175373
ABSTRACT:
The present invention provides a drive circuit of an oscillation gyro including two piezoelectric elements formed in an oscillator, which includes an adding circuit for supplying a drive signal to one side faces of the two piezoelectric elements and adding signals obtained from the other side faces opposed to the one side faces of the piezoelectric elements, and an oscillation circuit adapted to be fed back with an addition output signal obtained by the adding circuit, wherein a sine wave signal obtained as an oscillation output of the oscillation circuit is supplied to the one side faces of the two piezoelectric elements as the drive signal. Thus, the drive circuit of the oscillation gyro which obtains the stable output with the simple configuration can be provided.
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Search and Examination Reports from Austrian Patent Office Service and Information Center for Application No. 200504213-0 dated Sep. 6, 2006.
Kawamura Toshiyuki
Kurihara Kazuo
Matsunaga Toru
Satoh Yoshinori
Kananen Ronald P.
Kwok Helen
Rader & Fishman & Grauer, PLLC
Sony Corporation
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