Angular velocity sensor, amplification circuit of angular velocity signal, electronic apparatus, shake correction apparatus, amplification method of angular velocity signal, and shake correction method
AssigneeSony Corporation
InventorKazuo KURIHARA
Life of this patent
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Abstract
An angular velocity sensor includes a sensor device and an amplification circuit. The sensor device generates a detection signal corresponding to an angular velocity. The amplification circuit generates both a first output signal by non-inverting amplifying the detection signal with a first gain and a second output signal by inverting-amplifying the detection signal with the first gain, and outputs the first output signal and the second output signal in order to obtain an angular velocity signal by calculating a difference between the first output signal and the second output signal.
Claims20
An angular velocity sensor comprising:
- a sensor device that generates a detection signal corresponding to an angular velocity;
- and
- an amplification circuit that generates both a first output signal by non-inverting amplifying the detection signal with a first gain and a second output signal by inverting-amplifying the detection signal with the first gain, and outputs the first output signal and the second output signal in order to obtain an angular velocity signal by calculating a difference between the first output signal and the second output signal.
An amplification circuit of an angular velocity signal, comprising an amplification circuit section that generates both a first output signal by non-inverting amplifying a detection signal corresponding to an angular velocity with a first gain and a second output signal by inverting-amplifying the detection signal with the first gain, and outputs the first output signal and the second output signal in order to obtain an angular velocity signal by calculating a difference between the first output signal and the second output signal.
An electronic apparatus comprising:
- a casing;
- a sensor device that generates a detection signal corresponding to an angular velocity acting on the casing;
- an amplification circuit that generates both a first output signal by non-inverting amplifying the detection signal with a first gain and a second output signal by inverting-amplifying the detection signal with the first gain, and outputs the first output signal and the second output signal;
- and
- a signal processing circuit that calculates a difference between the first output signal and the second output signal to generate an angular velocity signal.
A shake correction apparatus comprising:
- an image capturing unit that captures an object image;
- a sensor device that generates a detection signal corresponding to an angular velocity;
- an amplification circuit that generates both a first output signal by non-inverting amplifying the detection signal with a first gain and a second output signal by inverting-amplifying the detection signal with the first gain, and outputs the first output signal and the second output signal;
- a signal processing circuit that calculates a difference between the first output signal and the second output signal to generate an angular velocity signal;
- and
- a correction mechanism that corrects a shake of the object image based on the angular velocity signal generated by the signal processing circuit.
An amplification method of an angular velocity signal, comprising the steps of:
- generating a detection signal corresponding to an angular velocity;
- generating both a first output signal by non-inverting amplifying the detection signal with a first gain and a second output signal by inverting-amplifying the detection signal with the first gain;
- and
- outputting the first output signal and the second output signal in order to obtain an angular velocity signal by calculating a difference between the first output signal and the second output signal.
A shake correction method comprising the steps of:
- generating a detection signal corresponding to an angular velocity;
- generating both a first output signal by non-inverting amplifying the detection signal with a first gain and a second output signal by inverting-amplifying the detection signal with the first gain;
- outputting the first output signal and the second output signal;
- calculating a difference between the first output signal and the second output signal to generate an angular velocity signal;
- and
- correcting a shake of an object image based on the generated angular velocity signal.
Dependencies are inferred from the claim text.