Detection device, sensor, electronic apparatus, and moving object
US-9813037-B2 · Nov 7, 2017 · US
Signal processing circuit, physical quantity detection apparatus, angular velocity detection apparatus, integrated circuit device, and electronic instrument
US9046366B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9046366-B2 |
| Application number | US-201213404573-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 24, 2012 |
| Priority date | Feb 25, 2011 |
| Publication date | Jun 2, 2015 |
| Grant date | Jun 2, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A signal processing circuit includes an I/V conversion circuit (current/voltage conversion section) that converts an oscillation current of a vibrator into a voltage, an RC filter (phase shift section) that shifts a phase of the output signal of the I/V conversion circuit, a full-wave rectifier (part of a drive amplitude control section) that binarizes a signal that has been shifted in phase to generate a switch control signal, a comparator (reference signal generation section) that generates a reference signal for synchronous detection based on the output signal of the I/V conversion circuit, and an EXOR circuit (clock signal generation section) that generates a clock signal for a switched capacitor filter (SCF) that has a frequency twice a frequency of a drive signal based on a phase difference between the reference signal and the switch control signal.
First claim
Opening claim text (preview).
What is claimed is: 1. A signal processing circuit that causes a vibrator to oscillate, and generates a signal that corresponds to a magnitude of a predetermined physical quantity based on a detection signal of the vibrator, the signal processing circuit comprising: a current/voltage conversion section that converts an oscillation current of the vibrator into a voltage; a phase shift section that shifts a phase of a first signal that has been converted into a voltage by the curr…
Assignees
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Classifications
- G01C19/5649Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G01C19/5776Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US9046366B2 cover?
- A signal processing circuit includes an I/V conversion circuit (current/voltage conversion section) that converts an oscillation current of a vibrator into a voltage, an RC filter (phase shift section) that shifts a phase of the output signal of the I/V conversion circuit, a full-wave rectifier (part of a drive amplitude control section) that binarizes a signal that has been shifted in phase to…
- Who is the assignee on this patent?
- Yanagisawa Yoshinao, Oshio Masahiro, Kikuchi Takayuki, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification G01C19/5649. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 02 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).