Invention Grant
- Patent Title: Oscillator circuit, method for manufacturing oscillator circuit, inertial sensor using the oscillator circuit, and electronic device
- Patent Title (中): 振荡电路，制造振荡电路的方法，使用振荡电路的惯性传感器和电子装置
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Application No.: US13143570Application Date: 2010-02-12
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Publication No.: US08875577B2Publication Date: 2014-11-04
- Inventor: Takeshi Uemura , Keisuke Kuroda
- Applicant: Takeshi Uemura , Keisuke Kuroda
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: RatnerPrestia
- Priority: JP2009-030788 20090213; JP2009-054537 20090309
- International Application: PCT/JP2010/000857 WO 20100212
- International Announcement: WO2010/092816 WO 20100819
- Main IPC: G06F1/04
- IPC: G06F1/04 ; H05K3/30 ; G01C19/5726 ; G01C19/5614 ; G01C19/5776 ; H03B5/32
Abstract:
An oscillator circuit includes an oscillator, a filter that filters a monitoring signal output from the oscillator and outputs the filtered signal, a driver that amplifies the filtered signal to generate a driving signal, and a controller operable to control a passing characteristic of the filter based on the monitoring signal. The oscillator performs a vibration while being driven by the driving signal, and outputs the monitoring signal according to the vibration. This oscillator circuit allows the oscillator to vibrate stably.
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