Invention Grant
- Patent Title: Self-oscillation circuit having means for eliminating quadrature error and method for eliminating quadrature error using the circuit
- Patent Title (中): 具有消除正交误差的装置的自振荡电路和使用该电路消除正交误差的方法
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Application No.: US14049600Application Date: 2013-10-09
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Publication No.: US09077283B2Publication Date: 2015-07-07
- Inventor: Chang Hyun Kim
- Applicant: Samsung Electro-Mechanics Co., Ltd.
- Applicant Address: KR Suwon
- Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
- Current Assignee Address: KR Suwon
- Priority: KR10-2013-0040331 20130412
- Main IPC: H03B5/20
- IPC: H03B5/20 ; H03D3/00 ; G01C19/5776

Abstract:
Disclosed herein are a self-oscillation circuit having a means for eliminating a quadrature error and a method for eliminating a quadrature error using the circuit. The self-oscillation circuit having a means for eliminating a quadrature error according to an exemplary embodiment of the present invention includes: a voltage converter converting a current signal from the gyroscope sensor into a voltage signal, a signal magnitude detector measuring a magnitude of a quadrature error signal included in an output signal from the voltage converter, and a quadrature error eliminator generating a signal which has the same phase as the output signal from the voltage converter and the same magnitude as a signal measured by the signal magnitude detector, based on an output signal from the signal magnitude detector and the output signal from the voltage converter.
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